CN220163591U - Non-inflatable wheel based on hub motor - Google Patents

Abstract

The utility model provides a non-pneumatic wheel based on a hub motor, which is characterized in that an isolation gap is arranged between the inner peripheral surface of a non-pneumatic tire and the outer peripheral surface of the hub motor so as to isolate heat generated by the hub motor from the inner peripheral surface of the non-pneumatic tire. Through setting up the isolation clearance at wheel hub motor outer lane and non-pneumatic tire inner circle to make the heat that wheel hub motor produced can not transmit on the inner peripheral surface of non-pneumatic tire, and then protect non-pneumatic tire's adhesive linkage, improve non-pneumatic tire's life and reduce the potential safety hazard of traveling.

Description

Non-inflatable wheel based on hub motor

Technical Field

The utility model relates to the technical field of vehicles, in particular to a non-inflatable wheel based on an in-wheel motor.

Background

In order to get rid of the risk of tire burst and improve the maintainability of vehicles, many tire manufacturers at home and abroad sequentially push out non-pneumatic tires based on elastic materials such as high-performance rubber, high-polymer composite materials and the like, and most of the non-pneumatic tires are based on elastic topological support structures such as Theel and Upitis pushed out by Mikrin corporation, turfCommand pushed out by Guest corporation and the like. Non-pneumatic tires have found their leading use on special purpose vehicles (e.g., ATVs, fork-lift trucks, etc.). However, these are vehicles based on conventional internal combustion engine drive and have not high running speeds, and non-pneumatic tires are rarely used in high speed electrically driven vehicles, particularly in high speed electrically driven wheel assemblies.

Especially, the heat generation condition of the wheel hub motor is serious, but the non-pneumatic tire is sensitive to high temperature, the existing wheel hub motor is directly assembled with the non-pneumatic tire, the intensity between different bonding surfaces of the non-pneumatic tire is reduced by the heat of the wheel hub motor, so that potential safety hazards are caused, as in the patent with the application number of 202010200417.8, the wheel hub motor is directly tightly combined with the non-pneumatic tire, and the high temperature of the wheel hub motor is easily transferred to the non-pneumatic tire, so that the potential safety hazards are caused.

Disclosure of Invention

The utility model mainly aims to provide a non-pneumatic wheel based on a hub motor, which aims to solve the problem that a non-pneumatic tire is caused by high temperature of the hub motor in the prior art.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a non-pneumatic wheel based on an in-wheel motor, comprising: a non-pneumatic tire, the non-pneumatic tire being annular, the non-pneumatic tire having an accommodation space in a middle thereof; the hub motor is positioned in the accommodating space; the first end of the connecting part is connected with the non-pneumatic tire, and the second end of the connecting part is connected with the shell of the hub motor; wherein the inner peripheral surface of the non-pneumatic tire has an isolation gap with the outer peripheral surface of the in-wheel motor to isolate heat generated by the in-wheel motor from the inner peripheral surface of the non-pneumatic tire.

Further, the non-pneumatic tire includes: a tread structure having a plurality of plies within an interior thereof; an elastomeric spoke having a first end attached to an inner circumferential surface of the tread structure; and the second ends of the elastic body spokes are attached to the outer circumferential surface of the rigid ring, the inner circumferential surface of the rigid ring and the outer circumferential surface of the hub motor are provided with isolation gaps, the connecting part is connected with one side of the rigid ring, and the hub motor is suspended in the tread structure by connecting the rigid ring and utilizing the elastic body spokes.

Further, a shearing belt is arranged between the layers of the plies, the layers of the plies are annular, the shearing belt is also annular, the shearing belt is clamped between the adjacent two plies, the wheel hub motor and the vehicle body load drag the tread structure to deform through the connecting part and the rigid ring, so that the adjacent plies deform differently, the adjacent plies shear the shearing belt, the deformation resistance of the shearing belt is utilized, the tread structure bears the load, and the 100% stretching stress of the shearing belt is k, and k is more than or equal to 5Mpa.

Further, the connecting part is integrally formed with the rigid ring, or the connecting part is detachably connected with the rigid ring; the connecting portion is circular, the outer fringe of connecting portion is provided with a plurality of first connecting holes, is used for with rigid ring is connected, the center department of connecting portion is provided with a plurality of second connecting holes, be used for with be provided with a plurality of mounting holes on the in-wheel motor and mutually support and connect.

Further, the non-pneumatic wheel based on the in-wheel motor further comprises: the isolation layer is arranged in the isolation gap, and the isolation layer is made of heat insulation materials and/or heat insulation structures.

Further, the non-pneumatic wheel based on the in-wheel motor further comprises: the isolation layer is arranged in the isolation gap, and the isolation layer is connected with the outer peripheral surface of the hub motor or the inner peripheral surface of the non-pneumatic tire.

Further, the isolating layer is at least one of glass fiber, asbestos, rock wool and silicate.

Further, the isolation layer is honeycomb-shaped.

Further, a heat insulation hole is formed between the first connection hole and the second connection hole of the connection part.

According to another aspect of the present utility model, there is provided a method for manufacturing a non-pneumatic wheel based on an in-wheel motor, characterized in that the method for manufacturing a non-pneumatic wheel includes: the method comprises the steps of concentrically placing the tread structure and the rigid ring in a preset position of a plastic mold, filling plastic elastomer into the plastic mold, and forming elastomer spokes so that the elastomer spokes, the tread structure and the hub form a whole, wherein the filling mode of the plastic mold comprises a casting process, an injection molding process or an extrusion process, before the tread structure and the rigid ring are placed in the plastic mold, polishing and sand blasting are carried out on the inner surface of the tread structure, rubber plastic adhesive is coated on the inner surface of the tread structure, and polishing and sand blasting are carried out on the annular outer surface, and rubber plastic adhesive is coated on the annular outer surface of the tread structure.

By applying the technical scheme of the utility model, the heat generated by the wheel hub motor is isolated from the inner peripheral surface of the non-pneumatic tire by arranging the isolation gap between the inner peripheral surface of the non-pneumatic tire and the outer peripheral surface of the wheel hub motor. The isolation gap is arranged between the outer ring of the hub motor and the inner ring of the non-pneumatic tire, so that heat generated by the hub motor cannot be transferred to the inner peripheral surface of the non-pneumatic tire, and the bonding layer of the non-pneumatic tire is further protected.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a non-pneumatic wheel based on an in-wheel motor according to the present utility model;

FIG. 2 shows a schematic cross-sectional structural view of an embodiment of a non-pneumatic wheel based on an in-wheel motor according to the present utility model;

fig. 3 shows an exploded structural schematic view of an embodiment of a non-pneumatic wheel based on an in-wheel motor according to the present utility model.

Wherein the above figures include the following reference numerals:

10. a non-pneumatic tire; 11. a tread structure; 111. a ply layer; 112. shearing the belt; 12. an elastomer spoke; 13. a rigid ring;

20. a hub motor;

30. a connection part;

40. isolating the gap.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims and drawings of the present utility model are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present utility model will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and that identical reference numerals are used to designate identical devices, and thus descriptions thereof will be omitted.

Referring to fig. 1 to 3, according to an embodiment of the present utility model, there is provided a non-pneumatic wheel based on an in-wheel motor, comprising: the non-pneumatic tire 10 is annular, the middle part of the non-pneumatic tire 10 is provided with an accommodating space, the hub motor 20 is positioned in the accommodating space, a first end of the connecting part 30 is connected with the non-pneumatic tire 10, and a second end of the connecting part 30 is connected with a shell of the hub motor 20; wherein an inner circumferential surface of the non-pneumatic tire 10 and an outer circumferential surface of the in-wheel motor 20 have an isolation gap 40 to isolate heat generated by the in-wheel motor 20 from the inner circumferential surface of the non-pneumatic tire 10. By providing the separation gap 40 between the outer ring of the in-wheel motor 20 and the inner ring of the non-pneumatic tire 10, the heat generated by the in-wheel motor 20 cannot be transferred to the inner peripheral surface of the non-pneumatic tire 10, thereby protecting the adhesive layer of the non-pneumatic tire 10.

The weak point of the non-pneumatic tire 10 is that the bonding surface of the tread structure 11 and the elastomer spokes 12 and the bonding surface of the elastomer spokes 12 and the rigid ring 13 are rapidly degraded particularly at high temperature, and in order to protect the bonding strength, heat generated by the in-wheel motor 20 must be isolated.

In the prior art, the use of the hub motor greatly increases the unsprung mass, the response of the suspension becomes slow when a bumpy road condition is encountered, and the normal steering becomes slow due to the increase of the unsprung mass, so in this embodiment, the non-pneumatic tire 10 includes: the tire tread structure 11, elastomer spoke 12 and rigid ring 13, the inside of tread structure 11 contains the skeleton layer, and tread structure 11 is the rubber tread of curing, has pre-buried wirerope such as wirerope cloth, nylon curtain cloth, polyester curtain cloth in the rubber tread, through, the first end of elastomer spoke 12 is attached to the inside of tread structure 11, the second end of elastomer spoke 12 is attached to the outside of rigid ring 13, the internal surface of rigid ring 13 with the outer peripheral face of wheel hub motor 20 has isolation clearance 40, wherein, connecting portion 30 with the side of rigid ring 13 is connected. The rigid ring 13 may be made of metal, such as aluminum alloy, steel, or the like, and may be molded or machined, and the rigid ring 13 may be made of a high-strength polymer material, such as ultra-high-molecular polyethylene, so that the non-pneumatic tire 10 is molded on the basis of the rigid ring 13 by being disposed on the non-pneumatic wheel, and further connected to the connection part 30 through the rigid ring 13. By using the non-pneumatic tire 10 of the present utility model, the weight of the in-wheel motor and the vehicle body can be replaced with the function of the suspension by the deformation of the tread structure 11 and the deformation of the elastomer spokes 12, canceling the vehicle suspension or reducing the suspension damping sensitivity, while the damping function is achieved by the deformation of the non-pneumatic tire, which improves the steering sensitivity using the in-wheel motor and also reduces the cost by canceling the suspension. The stiffness of the tread structure 11 of the non-pneumatic tire 10 is quite high, and the wheel hub motor is suspended in the tread through the rigid ring 13 and the connecting part 30, so that the suspension damping function of a traditional vehicle is outwards moved to the deformation of the elastomer spokes 12 of the non-pneumatic tire, and the suitability of the wheel hub motor on the vehicle is greatly promoted.

The connection portion 30 is connected to one side of the rigid ring 13, and the hub motor 20 is suspended inside the tread structure 11 by connecting the rigid ring 13 and using the elastomer spokes 12.

As shown in FIG. 2, a shear band 112 is arranged between the layers of the plies 111, the layers of the plies 111 are all annular, the shear band 112 is also annular, the shear band 112 is clamped between two adjacent plies 111, the wheel hub motor and the vehicle body load pull the tread structure 11 to deform through the connecting part 30 and the rigid ring 13, so that different deformations are generated on the adjacent plies 111, the adjacent plies 111 shear the shear band 112, and the deformation resistance of the shear band 112 is utilized to enable the tread structure 11 to bear the load, and the 100% stretching stress of the shear band 112 is k, wherein k is more than or equal to 5Mpa. The material of the shear band 112 may be elastomer such as rubber, polyurethane, or a rubber-plastic mixture, but these elastomers must meet the material characteristics, and the 100% tensile stress is k, k is greater than or equal to 5Mpa, and the hardness is preferably higher than the shore 82 degrees, so that the effective deformation resistance and the supporting function can be achieved.

In this embodiment, the connecting portion 30 is integrally formed with the rigid ring 13, or the connecting portion 30 is detachably connected with the rigid ring 13. The integral molding enables the rigid ring 13 and the connecting part 30 to be integrally molded through machining, stamping, casting or other processes, improves the working efficiency, and the connecting part 30 is detachably connected with the rigid ring 13, so that the volume of the non-pneumatic tire 10 is reduced, the elastomer is convenient to manufacture in the molding process, and the replacement in the damage is convenient to reduce the cost.

In this embodiment, as shown in fig. 3, the connecting portion 30 is circular, a plurality of first connecting holes are provided at an outer edge of the connecting portion 30 and are used for being connected with the rigid ring 13, and a plurality of second connecting holes are provided at a center of the connecting portion 30 and are used for being mutually matched and connected with a plurality of mounting holes provided on the hub motor 20. Of course, the rigid ring 13 is also provided with a mounting hole matched with the first connecting hole, and the mounting hole of the rigid ring 13 is matched with the mounting hole of the hub motor 20 by arranging the first connecting hole and the second connecting hole, so that a plurality of components are tightly connected.

Further, the non-pneumatic wheel based on the in-wheel motor further comprises: and an isolation layer, which is disposed in the isolation gap 40, wherein the isolation layer is made of a heat-insulating material, and the heat-insulating material is at least one of glass fiber, asbestos, rock wool and silicate, and has a cellular or other porous structure. Through setting up the isolation layer, further can keep apart hub motor's heat.

In this embodiment, the non-pneumatic wheel based on the in-wheel motor further includes: and an isolation layer provided in the isolation gap 40, the isolation layer being connected to an outer circumferential surface of the in-wheel motor 20 or to an inner circumferential surface of the non-pneumatic tire 10. The isolating layer can be coated on the outer shell of the hub motor 20 in an electroplating or spraying mode, or the inner peripheral surface of the rigid ring 13, preferably, the isolating layer is coated on the inner peripheral surface of the rigid ring 13, wherein the isolating layer can be a novel heat-insulating coating integrating reflection, radiation and integration, the heat-insulating coating added with superfine microporous materials, hollow glass or ceramic microbeads can be used for carrying out high reflection on solar infrared rays in the range of 400 nm-2500 nm, heat of the sun is not accumulated and increased in temperature on the surface of an object, heat radiation and heat dissipation can be automatically carried out, the heat on the surface of the object is radiated into space, the temperature of the object is reduced, even in cloudy days and at night, the heat can be radiated, hollow microbeads with extremely low heat conductivity can be simultaneously put into the coating to isolate heat energy transmission, even when the atmospheric temperature is very high, the object coated with the coating can be prevented from being conducted to the interior of the object, and the object is ensured to be cooled, and the object inner space can keep a constant temperature state. When sunlight is strong, the heat-insulating coating can reduce the surface temperature of an object by about 10-15 ℃, and can reduce the temperature to be more than 3 ℃ in cloudy days and at night or to be consistent with the atmospheric temperature. The coating has good performance and good self-cleaning performance for objects coated with fine cracks, so the normal temperature cooling coating is a novel normal temperature cooling energy-saving long-life coating which is integrated with high efficiency cooling, thin layer, decoration, self-cleaning, water resistance, moisture resistance, ultraviolet aging resistance, acid and alkali resistance and corrosion resistance.

Further, a heat insulation lightening hole is formed between the first connection hole and the second connection hole of the connection part 30. The connecting portion 30 comprises an inner ring and an outer ring, a first connecting hole is formed in the outer ring, a second connecting hole is formed in the inner ring, a plurality of supporting rods are arranged on the outer ring and the inner ring, gaps are reserved among the supporting rods, and the gaps are used for heat insulation and weight reduction.

According to another aspect of the present utility model, there is provided a method for manufacturing a non-pneumatic wheel based on a hub motor, wherein the pre-wired tread structure 11 and the rigid ring 13 are concentrically placed in a predetermined position of a plastic mold, the plastic mold is filled with plastic elastomer, and the elastomer spokes 12 are formed so that the elastomer spokes 12 and the tread structure and the hub are integrated, wherein the plastic mold is filled in a manner including a casting process, an injection process, or an extrusion process, the inner surfaces of the tread structure 11 and the rigid ring 13 are polished, sand blasted, and coated with a rubber plastic adhesive, and the annular outer surfaces are polished, sand blasted, and coated with a rubber plastic adhesive, before the tread structure 11 and the rigid ring 13 are placed in the plastic mold.

It should be noted that the plastic mold is a short term for a combination mold for compression molding, extrusion molding, injection molding, blow molding and low foaming molding. The coordination change of the male die, the female die and the auxiliary forming system can process a series of plastic parts with different shapes and different sizes.

In addition to the foregoing, references in the specification to "one embodiment," "another embodiment," "an embodiment," etc., indicate that the particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the utility model, as generally described. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the utility model.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. A non-pneumatic wheel based on an in-wheel motor, comprising:

a non-pneumatic tire (10), wherein the non-pneumatic tire (10) is annular, the middle part of the non-pneumatic tire (10) is provided with an accommodating space, and rubber is attached to the surface of the non-pneumatic tire (10);

-a hub motor (20), the hub motor (20) being located within the accommodation space;

a connecting portion (30), a first end of the connecting portion (30) is connected with the non-pneumatic tire (10), and a second end of the connecting portion (30) is connected with a housing of the hub motor (20);

wherein an inner peripheral surface of the non-pneumatic tire (10) and an outer peripheral surface of the in-wheel motor (20) have an isolation gap (40) to isolate heat generated by the in-wheel motor (20) from the inner peripheral surface of the non-pneumatic tire (10).

2. The non-pneumatic wheel based on an in-wheel motor according to claim 1, characterized in that said non-pneumatic tire (10) comprises:

-a tread structure (11), the interior of the tread structure (11) containing a plurality of plies (111);

an elastomeric spoke (12), a first end of the elastomeric spoke (12) being attached to an inner circumferential surface of the tread structure (11);

the tire tread structure comprises a rigid ring (13), wherein the second end of an elastic body spoke (12) is attached to the outer circumferential surface of the rigid ring (13), the rigid ring (13) is located inside the tire tread structure (11), an isolation gap (40) is formed between the inner circumferential surface of the rigid ring (13) and the outer circumferential surface of a hub motor (20), the connecting portion (30) is connected with one side of the rigid ring (13), and the hub motor (20) is suspended inside the tire tread structure (11) by connecting the rigid ring (13) and utilizing the elastic body spoke (12).

3. A non-pneumatic wheel based on an in-wheel motor as claimed in claim 2, wherein a shear band (112) is arranged between a plurality of plies (111) of the tread structure (11), the plurality of plies (111) are all annular, the shear band (112) is also annular, the shear band (112) is sandwiched by two adjacent plies (111), the in-wheel motor and the vehicle body load pull the tread structure (11) through a connecting part (30) and a rigid ring (13) to deform the adjacent plies (111) differently, and the adjacent plies (111) shear the shear band (112), the deformation resistance of the shear band (112) is utilized to enable the tread structure (11) to bear the load, and the 100% stretching stress of the shear band (112) is k, k is more than or equal to 5Mpa.

4. The non-pneumatic wheel based on an in-wheel motor according to claim 2, characterized in that the connecting portion (30) is integrally formed with the rigid ring (13) or the connecting portion (30) is detachably connected with the rigid ring (13); the connecting part (30) is circular, a plurality of first connecting holes are formed in the outer edge of the connecting part (30) and used for being connected with the rigid ring (13), and a plurality of second connecting holes are formed in the center of the connecting part (30) and used for being matched and connected with a plurality of mounting holes in the hub motor (20).

5. The in-wheel motor-based non-pneumatic wheel of claim 2, further comprising:

the isolation layer is arranged in the isolation gap (40), and is made of a heat insulation material and/or a heat insulation structure; the spacer layer is connected to an outer peripheral surface of the in-wheel motor (20), or is connected to an inner peripheral surface of the non-pneumatic tire (10).

6. The non-pneumatic wheel based on an in-wheel motor of claim 5, wherein the isolation layer is at least one of fiberglass, asbestos, rock wool, silicate.

7. The non-pneumatic wheel based on an in-wheel motor of claim 6, wherein the isolation layer is honeycomb-shaped.

8. The non-pneumatic wheel based on an in-wheel motor according to claim 4, wherein a heat insulation lightening hole is opened between the first connection hole and the second connection hole of the connection part (30).