CN117400660A - Wheel trim cover, wheel assembly and vehicle - Google Patents

Abstract

The present disclosure relates to a wheel trim cover, a wheel assembly, and a vehicle, the wheel trim cover including a circular cover body; the cover body is provided with a plurality of vent holes which are arranged at intervals along the circumferential direction of the cover body, and one side of each vent hole facing the outside of the vehicle is respectively covered with a rectifying structure; the side wall of the rectifying structure, which faces to one side of the circle center of the cover body, is spaced from the cover body to form a rectifying hole, and the other side walls of the rectifying structure are in sealing connection with the hole walls of the corresponding vent holes; the rectifying holes are perpendicular to the radial direction of the cover body, the rectifying channels which are arranged along the radial direction of the cover body are defined by the corresponding rectifying holes, the rectifying structure inner cavities and the vent holes, air flows out of the rectifying holes on the leeward side when the wheel runs, and flows in from the rectifying holes on the windward side, the air flow direction flowing in or out of the wheel decoration cover is basically parallel to the forward incoming flow direction, so that the flow direction of the air flow is orderly controlled, the phenomenon of turbulence and turbulence generated around the wheel is avoided to a certain extent, the wind resistance of the wheel is reduced, and the drag reduction effect of the wheel decoration cover is improved.

Description

Wheel trim cover, wheel assembly and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, in particular to a wheel decorative cover, a wheel assembly and a vehicle.

Background

When the running speed per hour of the vehicle is greater than 80km/h, the wind resistance accounts for more than half of the running resistance of the vehicle, wherein the wind resistance of the wheels accounts for about 25-30% of the wind resistance of the whole vehicle. The fuel consumption of the fuel-oil vehicle is reduced by about 0.07L per hundred kilometers every time the wind resistance of the wheels is reduced by 10counts, and the endurance mileage of the electric vehicle is improved by about 6km per hundred kilometers. Wheel windage can be divided into wheel windage, which is windage related to the size of the windward area of the tire and the profile of the windward profile, and ventilation resistance, which is windage related to the open ventilation components (e.g., rims) in the wheel.

In order to optimize the wind resistance of the wheel, a wheel decoration cover plate is usually additionally arranged on the rim of the wheel, a through hole for air flow to pass through is usually formed in the wheel decoration cover plate, and the perforated surface of the through hole is coplanar with the wheel decoration cover plate so as to limit the ventilation air flow of the rim and reduce the ventilation resistance of the wheel, thereby reducing the wind resistance of the wheel. For example, chinese patent application publication No. CN214928671U discloses a rim cover device for actively adjusting wind resistance and a vehicle, which includes a rim cover, and a plurality of through holes are circumferentially spaced on the rim cover.

However, in the prior art, when the air flow flows in or out from the through hole on the trim cover plate, the air flow direction collides with the incoming flow direction in front of the vehicle, so that the air flow direction is disordered and disordered, more turbulence and turbulence are generated around the wheel, and the air flow of the wheel and the vehicle body around the wheel is greatly influenced by flow separation and the like, so that the wind resistance of the wheel is large, and the wind resistance of the vehicle body is negatively influenced, and the drag reduction effect of the trim cover is poor.

Disclosure of Invention

In order to solve the technical problems described above, or at least partially solve the technical problems described above, the present disclosure provides a wheel trim cover, a wheel assembly, and a vehicle.

In a first aspect, the present disclosure provides a wheel trim cover for mounting on a side of a wheel facing an outside of a vehicle, the wheel trim cover comprising a circular cover body;

the cover body is provided with a plurality of ventilation holes, and the ventilation holes are arranged at intervals along the circumferential direction of the cover body; one side of each vent hole facing the outside of the vehicle is respectively covered with a rectifying structure;

the side wall of each rectifying structure facing to one side of the center of the cover body is arranged at intervals with the cover body to form rectifying holes, and other side walls of each rectifying structure are respectively connected with the hole walls of the corresponding vent holes in a sealing mode; the opening surfaces of the rectifying holes are respectively perpendicular to the radial direction of the cover body, and the rectifying holes, the inner cavities of the rectifying structures and the vent holes which correspond to the rectifying holes are jointly used for limiting the rectifying channels which are arranged along the radial direction of the cover body, so that when the wheel runs, air flows out of the rectifying holes of the rectifying channels which are positioned at the front side of the wheel, and air flows in of the rectifying holes of the rectifying channels which are positioned at the rear side of the wheel.

Optionally, each rectifying structure includes a top plate and two side plates;

the two side plates are respectively connected to two sides of a corresponding top plate, the two side plates face the outer walls of the cover bodies and are in sealing connection with the hole walls of corresponding vent holes, the outer walls of the top plates, which deviate from the circle center, are in sealing connection with the hole walls of the vent holes, the top plates face the circle center, are arranged at intervals with the cover bodies, and the top plates face the circle center, and the top plates and the two side plates face the circle center, and the cover bodies enclose together to form the rectifying holes.

Optionally, the joint of each top plate and the corresponding two side plates is in arc transition;

the radius of the circular arc between each top plate and the corresponding side plate is not less than 5mm.

Optionally, the length of the rectifying hole is not less than twice the width of the rectifying hole;

and/or, the hole wall circular arc of each rectifying hole transits.

Optionally, a damping structure is fixed on one side of the cover body facing the wheel, the damping structure comprises a plurality of damping sponges, and the damping sponges are arranged at intervals along the circumferential direction of the cover body;

and/or, one side of the cover body facing the wheel is provided with at least two first connecting parts used for being connected with the rim of the wheel, and the at least two first connecting parts are arranged at intervals along the circumferential direction of the cover body.

In a second aspect, the present disclosure provides a wheel trim cover for mounting on a side of a wheel facing an interior of a vehicle, the wheel trim cover comprising an annular cover body;

one side of the cover body, which is away from the wheel, is provided with a plurality of blades, the blades are arranged along the circumferential direction of the cover body at intervals, each blade extends along the direction away from the cover body, the distance between one end of each blade away from the cover body and the outer wall of the wheel, which is towards the inner side of the vehicle, is H, the width of the wheel is W, and the relation between H and W is as follows: H/W is more than or equal to 0.05 and less than or equal to 0.25.

Optionally, the range of the included angle θ between the line between the end of each blade facing the inner annular wall of the cover body and the end of each blade facing the outer annular wall of the cover body and the tangent line of the outer annular wall of the cover body at the blade is as follows: theta is more than or equal to 45 degrees and less than or equal to 90 degrees,

and/or the range of the included angle beta between the plane of each blade and the plane of the cover body is as follows: beta is more than or equal to 60 degrees and less than or equal to 120 degrees.

Optionally, at least two second connecting portions for connecting with the rim of the wheel are arranged on one side of the cover body facing the wheel, and at least two second connecting portions are arranged at intervals along the circumferential direction of the cover body.

In a third aspect, the present disclosure provides a wheel assembly comprising either or both of the wheel covers described above.

In a fourth aspect, the present disclosure provides a vehicle comprising either or both of the wheel covers described above.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the utility model provides a wheel decorations lid, wheel subassembly and vehicle through setting up the wheel decorations lid of installing in the outside one side of orientation car of wheel, and when the vehicle was high-speed to travel, the wheel decorations lid was rotatory along with the wheel, let the air current flow along predetermineeing the route through the air current direction of wheel rim of wheel decorations lid control to reduce the windage of wheel and automobile body to a certain extent, realize the reduction of vehicle windage.

Through setting up the wheel trim lid that is used for installing in the outside one side of orientation car of wheel to including circular shape lid body, set up a plurality of ventilation holes on the lid body, a plurality of ventilation holes set up along the circumference interval of lid body to one side that deviates from the wheel of each ventilation hole is covered respectively and is equipped with the rectification structure, and one side that the orientation car of lid body is outside is provided with a plurality of rectification structures promptly, and a rectification structure corresponds a ventilation hole, and every rectification structure covers respectively and establishes on the ventilation hole that corresponds. The rectification structures are arranged at intervals towards one side of the circle center of the cover body to form rectification holes, other side walls of the rectification structures are in sealing connection with hole walls of corresponding ventilation holes, the opening surfaces of each rectification hole are respectively perpendicular to the radial direction of the cover body, namely, the plane where the hole opening of each rectification hole is located is perpendicular to the radial direction of the cover body, rectification channels which are arranged along the radial direction of the cover body are jointly limited by the corresponding rectification holes, inner cavities of the rectification structures and the ventilation holes, namely, each rectification channel is arranged along the radial direction of the wheel decoration cover, and each rectification hole is hidden from the view of the outer side of the wheel so that the airflow direction in the rectification channels is not in conflict with the incoming flow direction in front of the vehicle. When the wheel rotates to run, air flows out of the rectifying holes of the rectifying channels on the lee side along the radial direction of the cover body, and air flows in of the rectifying holes of the rectifying channels on the windward side along the radial direction of the cover body, so that the rectifying channels on the wheel trim cover have the functions of collecting and guiding the air flow, the air flow direction is basically consistent with the incoming flow direction in front of the vehicle where the wheel is located when the air flow flows in or out through the rectifying holes, the flow direction of rim ventilation air flow is controlled, and the air flow direction flowing out of the wheel trim cover is regular and orderly, thereby avoiding the occurrence of turbulence and turbulence around the wheel to a certain extent, improving the flow separation of the wheel and the surrounding vehicle body surfaces, further reducing the wind resistance and the vehicle body wind resistance to a certain extent, and improving the drag reduction effect of the wheel trim cover. Meanwhile, the fuel consumption of the located fuel vehicle is reduced, the endurance mileage of the located electric vehicle is improved, and the use experience of a customer is improved.

Through setting up the wheel decorations lid of installing in the orientation car of wheel one side, this wheel decorations lid includes annular lid body, and the one side that deviates from of lid body is provided with a plurality of blades, and a plurality of blades set up along the circumference interval of lid body, and each blade extends along the orientation of keeping away from the lid body respectively, and the distance between the outer wall of the one end of keeping away from of lid body and the orientation car of wheel of each blade is H, the width of wheel is W, and the relation of H and W satisfies: the H/W is more than or equal to 0.05 and less than or equal to 0.25, namely each blade is convexly arranged on one surface of the cover body, which is far away from the wheel, and the protruding dimension H of the blade relative to the wheel, which faces the outer wall surface of the inner side of the vehicle, is 0.05 to 0.25 times of the width W of the wheel, so that the blade is exposed out of the outer wall surface of the wheel, which faces the inner side of the vehicle. Meanwhile, the fuel consumption of the located fuel vehicle is reduced, the endurance mileage of the located electric vehicle is improved, and the use experience of a customer is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a front view of a wheel cover according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is an enlarged view of a portion C in fig. 2;

FIG. 4 is an isometric view of a wheel cover according to an embodiment of the present disclosure;

FIG. 5 is an isometric view of another view of a wheel cover according to an embodiment of the present disclosure;

FIG. 6 is a rear view of a wheel cover according to an embodiment of the present disclosure;

FIG. 7 (1) is a schematic airflow diagram of the surrounding flow field of a schematic cross-sectional structure of a wheel employing a wheel trim cover according to an embodiment of the present disclosure;

FIG. 7 (2) is a schematic airflow diagram of the surrounding flow field of a schematic perspective view of a wheel using a wheel trim cover according to an embodiment of the present disclosure;

FIG. 8 (1) is a schematic airflow diagram of the surrounding flow field of a schematic cross-sectional structure of a wheel using a prior art wheel trim cover;

FIG. 8 (2) is a schematic airflow diagram of the surrounding flow field of a schematic perspective view of a wheel using a prior art wheel cover;

FIG. 9 is a comparison of velocity components in the Y direction of air flow outside a wheel with an embodiment of the present disclosure versus without an embodiment of the present disclosure;

FIG. 10 is a front view of a wheel cover according to another embodiment of the present disclosure;

FIG. 11 is a cross-sectional view taken along line B-B of FIG. 10;

fig. 12 is an enlarged view of a portion D in fig. 11;

FIG. 13 is an isometric view of a wheel cover according to another embodiment of the present disclosure;

FIG. 14 is a top view of a wheel cover according to another embodiment of the present disclosure;

fig. 15 is a graph comparing turbulence energy of inboard air flow for a wheel using another embodiment of the present disclosure versus a wheel without a wheel cover according to an embodiment of the present disclosure.

10, a wheel decorative cover; 11. a first cover body; 12. a vent hole; 13. a rectifying structure; 131. a top plate; 132. a side plate; 14. a rectifying hole; 15. a shock absorbing structure; 16. a first connection portion; the method comprises the steps of carrying out a first treatment on the surface of the 20. A wheel decorative cover; 21. a second cover body; 22. a blade; 23. a second connecting portion; 231. a connecting rod; 232. a hook part; 30. a wheel; 31. a rim; 32. and (3) a tire.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

Referring to fig. 1 to 11, the present embodiment provides a wheel trim cover 10 for mounting on a side of a wheel 30 facing the outside of a vehicle, the wheel trim cover 10 including a circular first cover body 11.

In some implementations, the first cover body 11 may be made of a plastic material such as ABS, PP, or the like through an injection molding process.

In particular, the wheel cover 10 may be mounted on the rim 31 of the wheel 30, for example, specifically, on the side of the rim 31 facing the outside of the vehicle.

The wheel cover 10 may be mounted on the rim 31 of the front wheel or on the rim 31 of the rear wheel.

The following embodiments are explained and illustrated with the wheel cover 10 mounted on the rim 31.

Specifically, referring to fig. 5 and 6, the first cover body 11 is provided with a plurality of ventilation holes 12, and the plurality of ventilation holes 12 are arranged at intervals along the circumferential direction of the first cover body 11; the side of each vent hole 12 facing away from the rim 31 is provided with a rectifying structure 13, respectively.

That is, the side of the first cover body 11 facing away from the rim 31 is provided with a plurality of rectifying structures 13, the plurality of rectifying structures 13 are arranged at intervals along the circumferential direction of the first cover body 11, the plurality of rectifying structures 13 are respectively arranged on the plurality of vent holes 12, and one vent hole 12 corresponds to one rectifying structure 13.

Referring to fig. 1 to 6, the side wall of each rectifying structure 13 facing to the center of the first cover body 11 is arranged at intervals with the first cover body 11 to form a rectifying hole 14, and the other side walls of each rectifying structure 13 are hermetically connected with the hole walls of the corresponding vent holes 12; the opening surfaces of the rectifying holes 14 are perpendicular to the radial direction of the first cover body 11, and the rectifying holes 14, the inner cavities of the rectifying structures 13 and the vent holes 12 which correspond to each other define rectifying channels which are arranged along the radial direction of the first cover body 11, so that when the rim 31 runs, air flows out of the rectifying holes 14 of the rectifying channels positioned on the leeward side along the radial direction of the first cover body 11, and air flows in of the rectifying holes 14 of the rectifying channels positioned on the windward side along the radial direction of the first cover body 11.

The X direction of the vehicle (corresponding to the longitudinal direction of the vehicle) is defined as the longitudinal direction, the Y direction (corresponding to the width direction of the vehicle) is defined as the lateral direction, and the Z direction (corresponding to the height direction of the vehicle) is defined as the vertical direction. Azimuth words such as "front and rear" are used to generally refer to directions corresponding to the X direction, with the driver position facing forward; "left and right" corresponds to the Y direction, and generally refers to left and right defined when the driver is facing forward; the upper and lower directions correspond to the Z direction. The traveling direction of the vehicle is the forward direction, and when the vehicle travels, the traveling direction of the vehicle coincides with the traveling direction of the wheels 30 and the traveling direction of the rim 31. When the vehicle is running, referring to fig. 1, the rotation direction of the wheel and the rotation direction of the rim are the same, and S is the same. The incoming flow direction F of the vehicle front air flow is opposite to the rotation direction S of the wheel, and the incoming flow direction F of the vehicle front air flow is opposite to the rotation direction S of the rim.

Referring to fig. 1, 4 to 6, the side wall of each rectifying structure 13 facing the center of the first cover body 11 is located outside the first cover body 11 and is spaced apart from the first cover body 11, i.e., the side of each rectifying structure 13 facing the center of the first cover body 11 and the first cover body 11 have gaps in the Y direction, respectively, which are formed as rectifying holes 14.

The opening surface of each rectifying hole 14 is perpendicular to the radial direction of the first cover body 11, that is, the plane of the orifice of each rectifying hole 14 is perpendicular to the radial direction of the first cover body 11, so that when the air flows into or out of the rectifying hole 14, the air flow direction is limited by the opening direction of the rectifying hole 14.

Each rectifying hole 14 defines a rectifying passage arranged along the radial direction of the first cover body 11 together with the inner cavity of the corresponding rectifying structure 13 and the vent hole 12, and the opening surface of each rectifying hole 14 is perpendicular to the radial direction of the first cover body 11, so that each rectifying hole 14 is arranged by the corresponding rectifying passage, and therefore, the rectifying hole 14 on the wheel trim cover 10 is hidden from view from the front view outside the wheel 30, on the one hand, the rectifying passage has the function of collecting and guiding airflow, so that the airflow easily flows along the radial direction of the first cover body 11 when flowing in or out through the rectifying hole 14, namely, the rectifying hole 14 can change the airflow direction, and the airflow direction flowing in or out from the wheel trim cover 10 is forcedly deflected into the direction parallel to the running direction. On the other hand, compared with the prior art in which the through hole is coplanar with the plate of the wheel cover 10 where it is located, not only is the aesthetic appearance better, but also foreign matter can be prevented from entering the rim 31 to some extent.

The wheel 30 having the wheel cover 10 of the present embodiment flows out of the rectifying passage located on the leeward side and flows in from the rectifying passage located on the windward side when running. In particular, the ventilation air flow inside the rim is regularly and orderly discharged from the rectifying holes 14 located on the leeward side. The airflow flows into the inside of the rim from the rectifying holes 14 positioned on the windward side, so that the airflow direction of the wheel 30 flowing into or out of the rectifying holes 14 is approximately parallel to the running direction of the vehicle when the wheel runs, the rectifying holes 14 forcibly deflect the airflow direction into the direction parallel to the running direction, namely, the rectifying holes 14 ensure that the airflow direction is regular and orderly, thereby avoiding turbulence and turbulence around the wheel 30 to a certain extent, improving the flow separation of the wheel and the surrounding vehicle body surface, further reducing the windage and the vehicle body windage of the wheel 30 to a certain extent, and improving the drag reduction effect of the wheel decorative cover 10.

Referring to fig. 7 (1), 7 (2), 8 (1) and 8 (2), that is, the airflow direction of the flow field around the wheel, compared with the conventional wheel cover, the airflow direction of the ventilation air inside the rim 31 is forcibly deflected to a direction substantially parallel to the running direction of the wheel 30 after flowing into or out of the rectifying hole 14 of the wheel cover 10 of the present embodiment, and turbulence in the ventilation air flowing out of the rim 31 are significantly suppressed.

Fig. 9 shows the velocity component of the air flow outside the wheel cover 10 in the Y direction. Typically, the airflow in front of the vehicle has only a velocity component in the X direction, and airflow around the vehicle having a velocity component in the Y direction is detrimental to the aerodynamic performance of the vehicle. Simulation results show that the velocity component of the air flow in the Y direction is significantly suppressed after the ventilation air flow inside the rim 31 flows into or out of the rectifying hole 14 of the wheel cap 10 of the present embodiment, compared with the wheel cap in the related art. The velocity component of the ventilation air flow of the rim 31 under the wheel decorating cover 10 of the present embodiment in the Y direction is much smaller than that of the wheel decorating cover of the prior art, and the fluctuation of the velocity component of the ventilation air flow of the rim 31 in the Y direction is also significantly smaller after passing through the rectifying hole 14 of the wheel decorating cover 10 of the present embodiment.

In fig. 9, the horizontal abscissa X represents the coordinate axis in the X direction, that is, the distance in the vehicle length direction, in (m); vertical ordinate V in FIG. 9 _y The velocity component of the air flow in the Y direction is expressed in units of (m/s).

In summary, simulation results show that, for passenger cars, the ventilation resistance of the wheel 30 with the trim cover 10 of the present embodiment can be reduced by 40%, the vehicle wind resistance can be reduced by 4%, and the wind resistance coefficient can be reduced by 10counts.

In other implementations, a plurality of rectifying structures 13 may also be provided on the side of the vent hole 12 facing the rim 31.

The wheel trim cover 10 that this embodiment provided for install in the outside one side of wheel 30, through setting up wheel trim cover 10 to circular shape first lid body 11, a plurality of ventilation holes 12 have been seted up on the first lid body 11, a plurality of ventilation holes 12 set up along the circumference interval of first lid body 11, and the one side that deviates from wheel 30 of each ventilation hole 12 is provided with rectification structure 13 respectively, namely the one side that deviates from wheel 30 of first lid body 11 is provided with a plurality of rectification structure 13, a rectification structure 13 corresponds a ventilation hole 12, every rectification structure 13 sets up respectively on corresponding ventilation hole 12. The side wall of each rectifying structure 13 facing to the circle center side of the first cover body 11 is arranged at intervals with the first cover body 11 to form rectifying holes 14, other side walls of each rectifying structure 13 are in sealing connection with the hole walls of the corresponding vent holes 12, the opening surfaces of each rectifying hole 14 are respectively perpendicular to the radial direction of the first cover body 11, namely, the plane of the hole opening of each rectifying hole 14 is perpendicular to the radial direction of the first cover body 11, the rectifying channels arranged along the radial direction of the first cover body 11 are defined by the corresponding rectifying holes 14, the inner cavities of the rectifying structures 13 and the vent holes 12, namely, each rectifying channel is arranged along the radial direction of the wheel decorative cover 10, and each rectifying hole 14 is hidden from being visible from the view of the outer side of the wheel 30, so that the airflow direction in the rectifying channels is not in conflict with the incoming flow direction in front of the vehicle. When the wheel 30 rotates to run, the airflow flows out of the rectifying holes 14 of the rectifying channels on the leeward side along the radial direction of the first cover body 11, and flows in of the rectifying holes 14 of the rectifying channels on the windward side along the radial direction of the first cover body 11, so that the rectifying channels on the wheel decoration cover 10 have the functions of collecting and guiding the airflow, when the airflow flows in or out through the rectifying holes 14, the airflow direction is basically consistent with the incoming flow direction in front of the vehicle where the wheel 30 is located, the flowing direction of the airflow is controlled, the airflow flows in the direction basically consistent with the running direction of the wheel 30, and the airflow direction is regular and orderly, thereby avoiding turbulent flow and turbulent flow around the wheel 30 to a certain extent, improving the flow separation of the wheel and the surrounding vehicle body surfaces, further reducing the wind resistance and the vehicle body wind resistance of the wheel 30 to a certain extent, and improving the drag reduction effect of the wheel decoration cover 10. Meanwhile, the fuel consumption of the located fuel vehicle is reduced, the endurance mileage of the located electric vehicle is improved, and the use experience of a customer is improved.

In some embodiments, referring to fig. 4-6, each rectifying structure 13 includes a top plate 131 and two side plates 132. Two curb plates 132 are connected respectively in the both sides of the roof 131 that corresponds, and the outer wall of the orientation first lid body 11 of two curb plates 132 all with the pore wall sealing connection of the ventilation hole 12 that corresponds, the outer wall of the departure centre of a circle side of roof 131 and the pore wall sealing connection of ventilation hole 12, the orientation centre of a circle one side of roof 131 and first lid body 11 interval setting to enclose jointly with the orientation centre of a circle one side of two curb plates 132, first lid body 11 and form rectifying hole 14, simple structure and stability, easy preparation.

The two side plates 132 may be integrally formed on two sides of the top plate 131, so that the integrity is good and the structural strength is high.

The top plate 131 and the two side plates 132 may be integrally formed with the first cover body 11, for example.

Of course, the rectifying structure 13 may be bonded to the first cover body 11 by hot melt adhesive, for example.

In some embodiments, referring to fig. 2 and 3, the junction of each top panel 131 and the corresponding two side panels 132 is rounded.

Through setting the junction of roof 131 and curb plate 132 that corresponds to the circular arc transition for rectifying structure outside profile is comparatively smooth round in same direction as, on the one hand, can avoid the phenomenon emergence of stress concentration to a certain extent, makes rectifying structure 13's structural stability higher. On the other hand, the disturbance of the air flow around the wheel due to the rotational movement of the rectifying structure 13 can be improved to some extent.

In some implementations, referring to fig. 3, the radius R of the arc between each top panel 131 and the corresponding side panel 132 is no less than 5mm.

In some embodiments, referring to fig. 3, the length L of the rectifying hole 14 is not less than twice the width M of the rectifying hole 14, that is, the opening size of the rectifying hole 14 in the Y direction (that is, the width M of the rectifying hole 14) is less than the maximum opening size of the rectifying hole 14 in the circumferential direction of the first cover body 11 (that is, the length L of the rectifying hole 14), and the opening size of the rectifying hole 14 in the Y direction is not less than twice the maximum opening of the rectifying hole 14 in the circumferential direction of the first cover body 11, so that the space occupied by the rectifying hole 14 in the Y direction can be made smaller, the protrusion thereof to the vehicle body is avoided, and the safety and the aesthetic property are good.

In particular, the hole walls of the rectifying holes 14 may be in arc transition, for example, so that the hole walls of the rectifying holes 14 are smoother.

In some embodiments, referring to fig. 2 and 6, a side of the first cover body 11 facing the rim 31 is fixed with a shock absorbing structure 15.

That is, the damper structure 15 is provided between the first cap body 11 and the rim 31, and on the one hand, the damper structure 15 has a protective effect on the surface of the rim 31. On the other hand, the vibration noise transferred between the rim 31 and the wheel trim cover 10 can be reduced by the vibration absorbing structure 15, and the user experience is improved.

The damper 15 may be attached to, for example, the inner wall surface of the first cover body 11 facing the wheel cover 10, or the damper 15 may be attached to the rim 31 facing the wheel cover 10.

In some implementations, referring to fig. 6, the shock absorbing structure 15 includes a plurality of shock absorbing sponges, and is simple in structure and easy to manufacture. In particular, a plurality of shock absorbing sponges may be provided on the inner wall surface of the first cover body 11 at intervals in the circumferential direction of the first cover body 11, for example.

In other implementations, the shock absorbing structure 15 may be, for example, a shock absorbing sponge ring.

In some embodiments, referring to fig. 2, at least two first connection parts 16 for connecting with the rim 31 of the rim 31 are provided at a side of the first cover body 11 facing the rim 31, and the at least two first connection parts 16 are spaced apart along the circumference of the first cover body 11, so that the structure is simple, the manufacturing is easy, and the connection is convenient and stable.

In some implementations, the first connection 16 may be, for example, a clasp by which the wheel cover 10 is clasped to the rim 31.

The fuel consumption requirements of users on fuel vehicles are becoming more stringent, the range requirements on electric vehicles are also becoming more and more high, and users are urgently expecting that the energy consumption of the vehicles can be lower and lower. When the running speed per hour of the vehicle is greater than 80km/h, the wind resistance accounts for more than half of the running resistance of the vehicle, wherein the wind resistance of the wheels accounts for about 25-30% of the wind resistance of the whole vehicle. The fuel consumption of the fuel-oil vehicle is reduced by about 0.07L per hundred kilometers every time the wind resistance of the wheels is reduced by 10counts, and the endurance mileage of the electric vehicle is improved by about 6km per hundred kilometers.

That is, among factors affecting the fuel consumption of the whole vehicle and the range of the electric vehicle, the wind resistance of the vehicle is very high, which is one of the factors having the highest ratio. Therefore, how to reduce the wind resistance of the wheels to reduce the wind resistance of the vehicle, thereby reducing the energy consumption of the whole vehicle and improving the endurance mileage is a problem to be solved urgently.

However, the aerodynamic drag reduction effect of the prior art wheel covers is poor.

Referring to fig. 10 to 15, the present embodiment provides a wheel trim cover 20 for mounting on the vehicle interior facing side of a wheel 30, the wheel trim cover 20 including an annular second cover body 21.

In some implementations, the second cover body 21 may be made of a plastic material such as ABS, PP, etc. through an injection molding process.

In particular, the wheel decorative cover 20 may be mounted on the rim 31 of the wheel 30, specifically, on a side of the rim 31 facing the vehicle interior (i.e., the inner side of the rim 31), so as to better exert its effect on the airflow of the chassis of the vehicle, and have a better hiding effect, without affecting the aesthetic appearance of the vehicle.

The wheel cover 20 can be mounted, for example, on the rim 31 of the rear wheel.

The following embodiments are explained and illustrated with the wheel cover 20 mounted on the rim 31.

Specifically, referring to fig. 10, 11, 13 and 14, the side of the second cover body 21 facing away from the wheel 30 is provided with a plurality of vanes 22, the plurality of vanes 22 are disposed at intervals along the circumferential direction of the second cover body 21, and each vane 22 extends in a direction facing away from the second cover body 21, the distance between the end of each vane 22 facing away from the second cover body 21 and the outer wall of the wheel 30 facing toward the vehicle interior side is H, the width of the wheel 30 is W, and the relationship between H and W satisfies: H/W is more than or equal to 0.05 and less than or equal to 0.25.

That is, the plurality of blades 22 are convexly disposed on the side of the second cover body 21 facing away from the wheel 30, the plurality of blades 22 are disposed at intervals along the circumferential direction of the second cover body 21, and the protruding dimension H of each blade 22 with respect to the outer wall surface of the wheel 30 facing the vehicle inner side (i.e., the inner wall surface of the wheel 30) is 0.05 times to 0.25 times the width W of the wheel 30, so that when the wheel cover 20 runs along with the wheel 30 rotating at a high speed, the blades 22 continuously flap the airflow, thereby generating strong vortex with large turbulence energy in the wake flow behind the blade, further influencing the airflow around the wheel 30 with the wheel cover 20, the vortex can strengthen the momentum exchange of the boundary layer on the vehicle body surface, delay the flow separation of the airflow on the vehicle body surface, thereby having a better drag reduction effect on the vehicle where the wheel 30 is located, and reducing the wind resistance of the vehicle where the wheel 30 is located.

The width W of the wheel 30 is specifically the width of the tire 32.

In addition to the wheel cover 20 according to the present embodiment being attached to the inner side of the rim 31 of the rear wheel, the wheel cover 10 having the rectifying effect according to the above embodiment may be attached to the outer side of the rim 31 of the rear wheel.

In particular, the trim cover 20 mounted on the side of the wheel 30 facing the vehicle interior can better exert an influence on the vehicle chassis airflow, and the blade 22 on the trim cover 20 can be prevented from interfering with the rectifying effect of the trim cover 10 of the above embodiment.

Referring to fig. 15, the turbulence energy of the inboard peripheral flow field of a trim cover 20 mounted inboard of the rear wheel is illustrated. As can be seen from fig. 15, after the wheel cover 20 of the present embodiment is mounted on the inside of the rear wheel, the turbulence of the chassis airflow on the inside of the rear wheel can be significantly higher than in the case where the wheel cover 20 of the present embodiment is not mounted on the inside of the rear wheel. The simulation result shows that the vehicle windage can be reduced by 7.6% and the windage coefficient can be reduced by 19counts in total by installing the wheel cover 20 with the vortex generating function of the present embodiment and the wheel cover 10 with the rectifying function of the above embodiment.

Therefore, the wheel trim cover 20 of the present embodiment is a vortex wheel trim cover, and the wheel trim cover 20 having the effect of generating vortex can generate vortex with larger turbulence energy by using the rotational movement of the wheel 30, so that the strength of the vortex is improved, the boundary layer on the surface of the vehicle body is influenced by the vortex, the vehicle body drag reduction effect is better, and the wheel trim cover 10 having the rectifying effect of the above embodiment can be matched to improve the drag reduction effect, so that the drag reduction effects of the wheel trim cover 20 and the wheel trim cover 10 are exerted in a superimposed manner.

In fig. 15, the horizontal abscissa X represents the coordinate axis in the X direction, that is, the distance in the vehicle length direction, in (m); vertical ordinate Turbulent Kinetic Energy in fig. 9 indicates turbulence energy in (J/kg).

The wheel decoration cover 20 provided in this embodiment, the wheel decoration cover 20 is used for installing the one side towards the car of wheel 30, through setting up wheel decoration cover 20 to annular second lid body 21, the one side of deviating from wheel 30 of second lid body 21 is provided with a plurality of blades 22, a plurality of blades 22 set up along the circumference interval of second lid body 21, and each blade 22 extends along the direction towards keeping away from second lid body 21 respectively, the distance between the one end of keeping away from second lid body 21 of each blade 22 and the outer wall of wheel 30 towards the car one side is H, the width of wheel 30 is W, the relation of H and W satisfies: the height H/W is 0.05-0.25, that is, each blade 22 is convexly disposed on the surface of the second cover body 21 facing away from the wheel 30, and the protruding dimension H of the blade 22 relative to the wheel 30 facing the inner side outer wall surface of the vehicle is 0.05-0.25 times the width W of the wheel 30, so that the blade 22 is exposed to the outside of the wheel 30 facing the inner side outer wall surface of the vehicle, when the wheel cover 20 rotates with the wheel 30, the plurality of blades 22 continuously flap the airflow, strong vortex with large turbulence energy is generated in the rear tail flow, when the vortex flows to the vicinity of the tail with the wheel 30, the momentum exchange of the boundary layer of the surface of the tail can be enhanced, the flow separation of the airflow on the surface of the tail is delayed and improved, and the differential pressure resistance of the tail of the vehicle due to the flow separation of the airflow is reduced to a certain extent, and the wind resistance of the vehicle with the wheel 30 is reduced to a certain extent, so that the vehicle with the wheel 30 has a good drag reduction effect. Meanwhile, the fuel consumption of the located fuel vehicle is reduced, the endurance mileage of the located electric vehicle is improved, and the use experience of a customer is improved.

In some embodiments, referring to fig. 10, the range of the angle θ between the extension line P1 of the line between the end of each vane 22 facing the inner annular wall of the second cover body 21 and the end of the vane 22 facing the outer annular wall of the second cover body 21 and the tangent P2 of the outer annular wall of the second cover body 21 at the vane 22 satisfies: θ is more than or equal to 45 degrees and less than or equal to 90 degrees.

That is, the blade 22 is provided obliquely on the second cover body 21, and the direction of inclination of the blade 22 coincides with the direction of rotation of the rim 31, and the strength of the vortex generated by the blade in this state is large, and the drag reduction effect thereof is good.

As an example, referring to fig. 10 and 13, each blade 22 may be provided in a ring-wide manner along the second cover body 21, for example.

In some embodiments, referring to fig. 14, the range of the included angle β between the plane in which each blade 22 is located and the plane in which the second cover body 21 is located satisfies: beta is more than or equal to 60 degrees and less than or equal to 120 degrees.

That is, the blades 22 may be vertically disposed on the second cover body 21, or may be inclined on the second cover body 21, and the blade inclination angle β to a certain extent may make the generated vortex intensity higher, and the drag reduction effect better.

In some embodiments, referring to fig. 12 and 14, at least two second connection parts 23 for connection with a rim 31 of the wheel 30 are provided at a side of the second cover body 21 facing the wheel 30, and the at least two second connection parts 23 are provided at intervals along the circumferential direction of the second cover body 21, so that the structure is simple, the manufacturing is easy, and the connection is convenient and stable.

In some implementations, the second connection 23 may be, for example, a clasp by which the wheel cover 20 is clasped to the rim 31.

Referring to fig. 12, in some implementations, the buckle may include, for example, a connecting rod 231 and a hook 232, where the connecting rod 231 is fixedly connected to one side of the second cover body 21 facing the rim 31, the hook 232 is fixedly connected to one end of the connecting rod 231 facing away from the second cover body 21, and the hook 232 is used for clamping with a clamping groove on the rim 31 into which the hook 232 extends, so that the buckle is simple in structure, easy to manufacture and convenient to assemble.

The connecting rod 231 and the hook 232 may be integrally formed, so that the integrity is good, the structural strength is high, and the connection strength between the wheel decorative cover 20 and the rim 31 in this embodiment is enhanced.

Of course, the connecting rod 231 may be integrally formed with the second cover body 21, i.e., the second connecting portion 23 and the second cover body 21 may be integrally formed.

The present embodiment also provides a wheel assembly including the wheel decorative cover 10 of the above embodiment, and/or the wheel decorative cover 20 of the above embodiment.

The specific structure and implementation principle of the wheel decorative cover 10 in this embodiment are the same as those of the wheel decorative cover 10 provided in the foregoing embodiment, and the same or similar technical effects can be brought, which are not described in detail herein, and specific reference may be made to the description of the foregoing embodiment.

The specific structure and implementation principle of the wheel decorative cover 20 in this embodiment are the same as those of the wheel decorative cover 20 provided in the foregoing embodiment, and the same or similar technical effects can be brought, which are not described in detail herein, and specific reference may be made to the description of the foregoing embodiment.

The present embodiment also provides a vehicle including the wheel cover 10 of the above embodiment and/or the wheel cover 20 of the above embodiment.

The specific structure and implementation principle of the wheel decorative cover 10 in this embodiment are the same as those of the wheel decorative cover 10 provided in the foregoing embodiment, and the same or similar technical effects can be brought, which are not described in detail herein, and specific reference may be made to the description of the foregoing embodiment.

The specific structure and implementation principle of the wheel decorative cover 20 in this embodiment are the same as those of the wheel decorative cover 20 provided in the foregoing embodiment, and the same or similar technical effects can be brought, which are not described in detail herein, and specific reference may be made to the description of the foregoing embodiment.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A wheel cover for mounting on a side of a wheel facing the outside of a vehicle, characterized in that the wheel cover comprises a circular first cover body (11);

the first cover body (11) is provided with a plurality of vent holes (12), and the vent holes (12) are arranged at intervals along the circumferential direction of the first cover body (11); one side of each ventilation hole (12) facing the outside of the vehicle is respectively covered with a rectifying structure (13);

the side wall of each rectifying structure (13) facing to the circle center side of the first cover body (11) and the first cover body (11) are arranged at intervals to form rectifying holes (14), and the other side walls of each rectifying structure (13) are respectively connected with the hole walls of the corresponding vent holes (12) in a sealing mode; the opening surface of each rectifying hole (14) is perpendicular to the radial direction of the first cover body (11), the corresponding rectifying hole (14), the inner cavity of the rectifying structure (13) and the vent hole (12) jointly define a rectifying channel which is arranged along the radial direction of the first cover body (11), so that when the wheel runs, air flows out of the rectifying holes (14) of the rectifying channel positioned at the front side of the wheel, and air flows in from the rectifying holes (14) of the rectifying channel positioned at the rear side of the wheel.

2. The wheel cover according to claim 1, wherein each rectifying structure (13) comprises a top plate (131) and two side plates (132);

the two curb plates (132) are connected respectively in the both sides of roof (131) that correspond, and two the orientation of curb plate (132) the outer wall of first lid body (11) all with the pore wall sealing connection of corresponding ventilation hole (12), the deviating from of roof (131) the outer wall of centre of a circle one side with the pore wall sealing connection of ventilation hole (12), the orientation of roof (131) centre of a circle one side with first lid body (11) interval sets up, and with two the orientation of curb plate (132) one side of centre of a circle first lid body (11) enclose jointly and form rectification hole (14).

3. The wheel cover according to claim 2, wherein the junction of each top plate (131) and the corresponding two side plates (132) is in circular arc transition;

the radius of the circular arc between each top plate (131) and the corresponding side plate (132) is not less than 5mm.

4. The wheel cover according to claim 1, wherein the length of the rectifying hole (14) is not less than twice the width of the rectifying hole (14);

and/or the hole wall arc transition of each rectifying hole (14).

5. The wheel trim cover according to claim 1, wherein a shock absorbing structure (15) is fixed to a side of the first cover body (11) facing the wheel, the shock absorbing structure (15) includes a plurality of shock absorbing sponges, and the plurality of shock absorbing sponges are arranged at intervals along a circumferential direction of the first cover body (11);

and/or, one side of the first cover body (11) facing the wheel is provided with at least two first connecting parts (16) for connecting with the rim of the wheel, and at least two first connecting parts (16) are arranged at intervals along the circumferential direction of the first cover body (11).

6. A wheel cover for mounting on the side of a wheel facing into a vehicle, characterized in that it comprises an annular second cover body (21);

one side of the second cover body (21) deviating from the wheel is provided with a plurality of blades (22), a plurality of blades (22) are arranged along the circumferential interval of the second cover body (21), each blade (22) extends along the direction far away from the second cover body (21), the distance between one end of each blade (22) far away from the second cover body (21) and the outer wall of the wheel on one side in the vehicle is H, the width of the wheel is W, and the relation between H and W is as follows: H/W is more than or equal to 0.05 and less than or equal to 0.25.

7. The wheel trim cover according to claim 6, wherein a range of an included angle θ between an end of each of the blades (22) facing the inner annular wall of the second cover body (21) and an end of the blade (22) facing the outer annular wall of the second cover body (21) and a tangent line of the outer annular wall of the second cover body (21) at the blade (22) satisfies: theta is more than or equal to 45 degrees and less than or equal to 90 degrees,

and/or the range of the included angle beta between the plane of each blade (22) and the plane of the second cover body (21) is satisfied: beta is more than or equal to 60 degrees and less than or equal to 120 degrees.

8. The wheel trim cover according to claim 6, characterized in that the side of the second cover body (21) facing the wheel is provided with at least two second connection portions (23) for connection with the rim of the wheel, the at least two second connection portions (23) being arranged at intervals along the circumferential direction of the second cover body (21).

9. A wheel assembly comprising a wheel cover as claimed in any one of claims 1 to 5 and/or a wheel cover as claimed in any one of claims 6 to 8.

10. A vehicle comprising a wheel cover as claimed in any one of claims 1 to 5 and/or a wheel cover as claimed in any one of claims 6 to 8.