CN214112770U - Electric scooter's in-wheel motor and electric scooter - Google Patents

Abstract

The utility model discloses an electric scooter's in-wheel motor and electric scooter, which comprises a stator, around stator pivoted rotor, set firmly the casing outside the rotor and fix the motor shaft on the stator, the motor shaft has the axis body of heat dissipation channel in the middle of being one, heat dissipation channel axial runs through in the axis body, the at least one end of axis body stretches out in the casing, outwards transmit through passing its inside motor shaft fast effectively with a large amount of heat that the motor operation produced, be favorable to thermal quick dissipation, avoid the long-time accumulation of the inside heat of motor, prevent that the motor temperature from lasting rising and the stability of motor, thereby guarantee electric scooter's normal use.

Description

Electric scooter's in-wheel motor and electric scooter

Technical Field

The utility model relates to an electric scooter's technical field especially relates to an electric scooter's in-wheel motor.

Background

At present, the electric scooter has the functions of riding instead of walking, sports and entertainment, so the electric scooter is popular among people. The existing electric scooter comprises a front scooter body assembly, a front wheel assembly frame, a front wheel assembly, a pedal assembly, a rear wheel assembly frame and a rear wheel assembly.

Wherein, the front wheel subassembly and the rear wheel subassembly adopt the wheel hub motor of electric scooter of wheel hub and motor integral type design basically.

Be CN211641709U a novel double pin electric scooter wheel hub like the bulletin number of authorizing, disclose electric scooter's in-wheel motor and include left rim, right rim and stator fixed axle, left rim and the casing of right rim symmetry amalgamation formation motor also form the wheel hub of cover establishing the tire, left rim and right rim are passed respectively at stator fixed axle both ends.

If the bulletin number of authorizing is CN 205231950U electric scooter's electric wheel hub motor of quick detach formula electric scooter, disclosed electric scooter's electric wheel hub motor includes stator, rotor, child skin and end cover, and the stator includes stator mandrel and stator core, and the end cover is fixed on wheel hub and is connected with the stator mandrel rotation through the bearing.

The utility model discloses the people finds in practice, among the technical scheme that above-mentioned literature recorded, a large amount of heats that the motor operation produced are difficult to dissipate fast, and the inside heat of motor especially accumulates for a long time, will lead to motor temperature to last rising, and this can influence the stability of motor, causes the chaotic of motor speed or stop work to influence electric scooter's normal use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a reduce operating temperature's electric scooter's in-wheel motor further provides the electric scooter who has this electric scooter's in-wheel motor.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: electric scooter's in-wheel motor includes the stator, around stator pivoted rotor, set firmly the casing outside the rotor and fix the motor shaft on the stator, the motor shaft have the axis body of heat dissipation passageway in the middle of being one, heat dissipation passageway axial run through in the axis body, at least one end of axis body stretch out in the casing to pass through the heat dissipation passageway transmit the outside with the inside heat of motor.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the heat dissipation channel is a straight through hole, and the inner diameter of the straight through hole is 1-10 cm.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the inner diameter of the through hole is 3-10 cm.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the motor shaft both ends all be equipped with the cooling lid, the cooling lid on be provided with the louvre.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the side wall of the shaft body is provided with a threading hole for a line to pass through, and the threading hole is communicated with the heat dissipation channel.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the hub and the shell are integrally formed or the hub is detachably fixed outside the shell.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the two ends of the motor shaft extend outwards from the two ends of the shell to be exposed out of the end face of the shell.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the wheel hub comprises an annular component for sleeving a tire, a protective cover is arranged on the first end face of the annular component, the second end face of the annular component is open, and the motor is positioned in a cavity in the middle of the annular component; one end of the motor shaft is positioned in the protective cover, and the other end of the motor shaft extends outwards from the opening towards one side.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the end face of the casing, which is close to the opening, is provided with a protruding structure for installing a brake pad, and the protruding structure is an annular boss surrounding a through hole penetrating through a motor shaft.

The utility model discloses another protection topic does: electric scooter, include electric scooter's in-wheel motor.

Compared with the prior art, the utility model has the advantages that set up the heat dissipation passageway that runs through in the middle of the motor shaft, can be with a large amount of heats that the motor operation produced through passing its inside motor shaft outwards transmission fast effectively, be favorable to thermal quick dissipation, avoid the long-time accumulation of the inside heat of motor, prevent that motor temperature from lasting rising and the stability of motor to guarantee electric scooter's normal use.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a first schematic view of an electric scooter according to a preferred embodiment of the present invention;

fig. 2 is a second schematic view of the electric scooter according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view of a front wheel assembly according to a preferred embodiment of the present invention

Fig. 4 is a first schematic diagram of a preferred embodiment of the present invention;

fig. 5 is a second schematic view of a wheel of an electric scooter with a motor according to a preferred embodiment of the present invention;

fig. 6 is a third schematic view of a wheel of an electric scooter with a motor according to a preferred embodiment of the present invention;

fig. 7 is a fourth schematic view of a wheel of an electric scooter with a motor according to a preferred embodiment of the present invention;

fig. 8 is a cross-sectional view of a wheel of an electric scooter with a motor according to a preferred embodiment of the present invention;

fig. 9 is an exploded view of a wheel of an electric scooter with a motor according to a preferred embodiment of the present invention;

fig. 10 is an exploded view of a wheel of an electric scooter with a motor according to a preferred embodiment of the present invention;

fig. 11 is a first structural schematic view of a wheel hub according to a preferred embodiment of the present invention;

fig. 12 is a second schematic structural view of a wheel hub according to a preferred embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1-2, the present embodiment provides an electric scooter including a frame assembly 100, a front wheel assembly 200, and a rear wheel assembly 300. The front wheel assembly 200 includes a front wheel body 201 and a front motor shaft 202, and the rear wheel assembly 300 includes a rear wheel body 301 and a rear motor shaft 302. Side a of frame assembly 100 is connected to front motor shaft 202 by front support arm 101, side B of frame assembly 100 is connected to rear motor shaft 302 by rear support arm 102, and front support arm 101 and rear support arm 102 are separated from A, B sides of frame assembly 100.

Compared with the traditional wheel assembly in a mode of connecting through a double-arm structure, the connecting mode of the single-arm structure eliminates torsion on two sides of the wheel assembly, so that the stability and flexibility of the wheel assembly are better. Meanwhile, the front supporting arm 101 and the rear supporting arm 102 are separated from A, B two sides of the frame assembly 100, so that the gravity center of the vehicle body is concentrated on the connecting line of the gravity centers of the front wheel assembly 200 and the rear wheel assembly 300, the structural layout is more reasonable, the balance of the vehicle body is better, and the stability of the electric scooter in the riding process is better.

In this embodiment, the front wheel assembly 200 and the rear wheel assembly 300 are configured as wheel hub motors, and specific embodiments of the front wheel assembly 200 and the rear wheel assembly 300 will be described below.

As shown in fig. 4-10, the hub motor comprises a motor 1 and a hub 2. The motor 1 comprises a stator, a rotor 4 rotating around the stator, a casing 5 fixed outside the rotor, and a motor shaft 10 fixed on the stator. The hub 2 is integrally formed with the housing 5 of the motor or the hub 2 is detachably fixed outside the housing 5.

It should be understood that the motor shaft 10 is located at the center of the wheel body 20, the stator is arranged along the axis of the motor shaft 10, the rotor 4 surrounds the outer periphery of the motor shaft 10, and the housing 5 is fixed outside the rotor 4 and rotates with the rotor 4.

As shown in fig. 8, the motor shaft 10 is a shaft body 12 having a heat dissipating channel 11 in the middle, the heat dissipating channel 11 axially penetrates through the shaft body 12, and at least one end of the shaft body 12 extends out of the housing 5 to transfer heat inside the motor 1 to the outside through the heat dissipating channel 11.

Through heat dissipation channel 11's setting, can be with the outside transmission of a large amount of heats that motor 1 operation produced through passing its inside motor shaft 10 fast effectively, be favorable to thermal quick dissipation, avoid the long-time accumulation of the inside heat of motor 1, prevent that motor 1 temperature from lasting rising and motor 1's stability to guarantee electric scooter's normal use.

As shown in fig. 8, the heat dissipating channel 11 is a through hole, and the outer diameter of the axle body 12 varies according to the size of the wheel, so the inner diameter of the through hole varies accordingly. Preferably, the through hole is 1-10 cm. More preferably, the inner diameter of the through hole is 3-10 cm, so that the heat dissipation channel 11 has enough space for heat dissipation.

The wheel of the electric scooter with 11 inches is shown in the figure, the outer diameter of the shaft body 12 is 5-6 cm, and the inner diameter of the through hole is 3-4 cm. Thus, the motor shaft 10 has a proper wall thickness to ensure its strength, and has a large enough space for the heat dissipation channel 11 to dissipate heat.

As shown in fig. 7 and 8, a threading hole through which a line can pass is formed in a side wall of the shaft body 12, and the threading hole is communicated with the heat dissipation channel 11. The threading holes include a first threading hole 18 on the shaft body 12 located outside the casing 5 and a second threading hole on the shaft body 12 located inside the casing 5. The signal line or the power cord that controller and battery in the electric scooter footboard were drawn forth can penetrate to heat dissipation channel 11 from first threading hole 18, then in leading into the inside stator of motor 1 or rotor 4 from the second threading hole.

Preferably, as shown in fig. 4 to 10, both ends of the motor shaft 10 are provided with heat radiating covers, including a first heat radiating cover 13 at an end of the shaft body 12 on the opening side of the hub 2 and a second heat radiating cover 14 at an end of the shaft body 12 on the shield 22 side of the hub 2.

The first heat dissipation cover 13 and the second heat dissipation cover 14 are provided with heat dissipation holes. The heat dissipation cover 13 not only plays a decorative role, so that the appearance of the wheel is more attractive and tidy, but also prevents foreign matters from entering the motor shaft 10 to cause poor heat dissipation or other faults.

As shown in fig. 4-12, the hub 2 includes a ring-shaped member 21 for receiving the tire 3, a protective cover 22 is disposed on a first end surface a of the ring-shaped member 21, a second end surface b of the ring-shaped member 21 is open, and the motor 1 with the motor shaft 10 is coaxially installed into a cavity in the middle of the ring-shaped member 21 from the open position; the hub 2 is detachably fixed to the housing 5, and the motor shaft 10 extends outward from the opening toward one side.

Just because the motor 1 is provided with the casing 5 and the hub 2 and the casing 5 are detachably fixed. When mounting the wheel, the user first fits the tire 3 on the independent hub 2, then fits the motor 1 with the motor shaft 10 into the hub 2 with the tire 3 fitted therein from the opening of the hub 2, and fixes the hub 2 and the housing 5, thereby completing the wheel assembly. Accordingly, when repairing the wheel and replacing the tire 3, the user first removes the hub 2 with the tire 3 from the housing 5 and then peels the tire 3 off the hub 2. Therefore, the motor 1 does not need to be operated together with the heavy motor, the tire 3 is easy to disassemble, assemble and maintain, the hub 2 is fixed and operated in the process of peeling the tire 3, and the production efficiency of wheel installation is improved.

In addition, the motor 1 and the hub 2 are separated, the motor 1 can be independently assembled, the two processes of assembling the motor 1 and sleeving the tire 3 can be simultaneously carried out, and the production efficiency of wheel installation is further improved.

And it should be understood that, compared with the structure that the hub 2 and the motor 1 are integrated, the motor 1 separated from the hub 2 in the embodiment has smaller weight and more regular appearance, which is beneficial to the maintenance operation of the motor 1.

As shown in fig. 12, the ring member 21 includes a ring body 6 and limit edges 7 located at both ends of the ring body 6 in the axial direction, and the limit edges 7 protrude from the outer surface of the ring body 6. The tyre 3 is sleeved outside the ring body 6 in an interference manner and limited by the limiting edges 7 at the two sides. Meanwhile, the side edge of the tire 3 is extruded on the inner side of the limiting edge 7, so that the cavity of the tire 3 is in a sealed state, and the air pressure in the tire can be maintained for a long time.

As shown in fig. 11, preferably, an air hole 8 is provided at the junction of the ring body 6 and the limiting edge 7 near one side of the protecting cover 22 of the hub 2, and an air nozzle is provided at the first end a of the hub 2 and is communicated with the air hole 8. When tyre 3 cup joints on wheel hub 2, gas pocket 8 is located the cavity of tyre 3, and the air cock is located outside the cavity to the user can inflate or lose heart tyre 3 through the air cock.

In the present embodiment, the shaft body 12 at the open side of the hub 2 extends outward along the axial direction of the motor 1 and beyond the outer surface of the tire 3 for connection with the front support arm 101 or the rear support arm of the electric scooter (as shown in fig. 1-3). The shaft body 12 on the side of the shield 22 of the hub 2 slightly exceeds the end surface of the casing 5, and the length of the exceeding part is adapted to the second heat dissipation cover 14 on the side, so that the heat dissipation cover 13 is just sleeved outside the shaft body 12 exceeding the casing 5.

As shown in fig. 7, and the end surface of the housing 5 near the opening is provided with a projection structure for mounting the brake pad S, which is an annular boss 15 surrounding a through hole through which the motor shaft 10 is inserted.

Preferably, as shown in fig. 8, 9 and 11, the protective cover 22 extends outward along the axial direction of the ring part 21 to form a depth, the ring part 21 is sleeved on the middle section of the housing 5, one end of the housing 5 exceeds the second end face b to protrude from the opening, the other end of the housing 5 exceeds the first end face a, and the housing 5 and the motor shaft 10 exceeding the first end face a are accommodated in the protective cover 22 having the depth.

Preferably, as shown in fig. 4, 6 and 12, the center of the outer end surface of the protective cover 22 is provided with a through hole K, and the heat dissipation cover 13 of the motor shaft 10 on the same side as the protective cover 22 extends into the through hole K and is accommodated in the through hole K, so that the heat dissipation cover 13 is substantially flush with the outer end surface of the protective cover 22, thereby making the appearance neat and beautiful.

The protective cover 22 is a hollow structure, and the peripheral side portion thereof includes a plurality of arc ribs 16 spaced from each other. Therefore, the motor 1 is protected, the appearance is modified, and the heat dissipation of the motor 1 is not affected.

Preferably, in the present embodiment, the shield 22 is integrally formed with the annular member 21. Aluminum die casting is preferably used. Therefore, the weight is light, the process is simple, and the structure of the finished product can be diversified.

As shown in fig. 4 and 6, in the present embodiment, the protecting cover 22 is connected to the casing 5 by the bolt assembly 17, so that the hub 2 and the casing 5 can be detachably fixed.

Preferably, as shown in fig. 10 and 12, a circle of solid bodies is arranged on the periphery of the through hole in the center of the protective cover 22, and a plurality of first mounting holes T1 are distributed on the solid bodies. Correspondingly, a raised mounting part 19 is arranged on the end face of the machine shell 5 opposite to the protective cover 22, a second mounting hole T2 is arranged on the mounting part 19, and a bolt penetrates through the first mounting hole T1 and is screwed in the second mounting hole T2, so that the hub 2 and the machine shell 5 are detachably fixed.

It is right above the utility model provides an electric scooter's in-wheel motor and electric scooter have carried out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been explained, and the explanation of above embodiment only is used for helping to understand the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. Electric scooter's in-wheel motor, its characterized in that includes the stator, around stator pivoted rotor, set firmly the casing outside the rotor and fix the motor shaft on the stator, the motor shaft be the axis body that has the heat dissipation passageway in the middle of one, heat dissipation passageway axial run through in the axis body, at least one end of axis body stretch out in the casing to pass through the heat dissipation passageway transmit to the outside with the inside heat of motor.

2. The hub motor of electric scooter according to claim 1, wherein said heat dissipation channel is a through hole, and the inner diameter of said through hole is 1-10 cm.

3. The hub motor for electric scooter of claim 2, wherein the inner diameter of said through hole is 3-10 cm.

4. The hub motor of electric scooter according to claim 2, wherein both ends of the motor shaft are provided with heat dissipation covers, and the heat dissipation covers are provided with heat dissipation holes.

5. The hub motor of electric scooter according to claim 1, wherein the sidewall of the shaft body is provided with a threading hole for a line to pass through, and the threading hole is communicated with the heat dissipation channel.

6. The hub motor for electric scooter of claim 1, comprising a hub, wherein the hub is integrally formed with the housing or the hub is detachably fixed outside the housing.

7. The hub motor of electric scooter as claimed in claim 6, wherein both ends of said motor shaft extend outwardly from both ends of said housing to be exposed at the end surface of said housing.

8. The hub motor for electric scooter of claim 7, wherein the hub comprises a ring member for receiving a tire, the ring member having a first end surface provided with a protective cover and a second end surface open, the motor being located in a cavity in the middle of the ring member; one end of the motor shaft is positioned in the protective cover, and the other end of the motor shaft extends outwards from the opening towards one side.

9. The hub motor of electric scooter as claimed in claim 8, wherein the end surface of said housing near said opening is provided with a protruding structure for mounting a brake pad, said protruding structure is an annular boss surrounding a through hole passing through the motor shaft.

10. An electric scooter, characterized by comprising the hub motor of the electric scooter according to any one of claims 1 to 9.

Images