Hub motor for moped

Abstract

An outer shell comprises a hub shell and a hub cover, the hub cover is detachably connected to the hub shell, a supporting shaft is a hollow pipe, a wire outlet hole is formed in the supporting shaft, and clamping pieces are arranged at the two ends of the supporting shaft; the mounting bracket is fixed on the supporting shaft, a driving motor and a speed reducer device are arranged on the mounting bracket, and the driving motor is in gear fit with the speed reducer device; a sealed containing cavity is formed between the hub shell and the hub cover, external water and dust particles are prevented from entering the interior of the shell, wires are stored through the hollow supporting shaft, the wires can be stored in the shell, and therefore the wires can be prevented from being damaged, and the service life of the wires can be prolonged. The whole safety protection performance is good, the driving motor is arranged to provide power for the whole wheel hub for the moped, the speed reducer device increases the driving torque, and outdoor personnel can be greatly assisted in pushing the whole camping vehicle.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of hub motors, in particular to a hub motor for a power-assisted vehicle. BACKGROUND

[0002] For people who love outdoor camping, an outdoor folding cart is a godsend for carrying goods. Because when camping, it is not difficult to find that although it is easy to load the car, it is a big challenge to take all the full stuff from the car to the camping site.

[0003] The patent literature with Chinese patent number CN202320457047.5 discloses an outdoor multifunctional camping cart, but the wheel part of the camping cart can only be rotated by manpower, and once the food placed in the camping cart is too much, the outdoor road is often a non-horizontal road, and more carrying strength is needed on an uphill road. For some users with less strength, not only can they not push the camping cart with high load, but also they are easy to make the camping cart slide downhill. In order to assist the pushing and moving of the camping cart, it is necessary to design an auxiliary power, therefore, the application designs a hub motor for a power-assisted vehicle. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to propose a hub motor for a power-assisted vehicle in view of the shortcomings of the traditional outdoor camping cart.

[0005] The application provides a hub motor for a power-assisted vehicle, which comprises:

[0006] An outer shell body comprises a hub shell and a hub cover, the hub cover is detachably connected to the hub shell, and a sealed containing cavity is formed between the hub shell and the hub cover;

[0007] A support shaft is rotatably connected to one end of the hub shell and rotatably connected to the other end of the hub cover, the support shaft is a hollow pipe, an outlet hole is arranged on the support shaft, and clamping pieces are arranged at both ends of the support shaft;

[0008] An installation support is fixed to the support shaft, a driving motor and a speed reducer device are arranged on the installation support, and the driving motor and the speed reducer device are gear-connected;

[0009] An output end of the speed reducer device is provided with a driving wheel, one end of the driving wheel is connected with a driven wheel, and the driven wheel drives the outer shell body.

[0010] Preferably, the installation support comprises a first installation plate and a second installation plate, and the first installation plate and the second installation plate are both fixed to the support shaft.

[0011] Preferably, the driving motor includes a motor housing, a motor main shaft and a motor output gear. The motor output gear is sleeved on the motor main shaft, and the motor output gear is matched with a gear of a reducer device.

[0012] Preferably, one end of the motor housing close to the motor output gear is fixed to the first mounting plate, and the rear end of the motor housing is fixed to the second mounting plate.

[0013] Preferably, a gear protection cover is further provided on the first mounting plate, and the motor output gear is located inside the gear protection cover.

[0014] Preferably, a motor buckle is provided on the second mounting plate, both ends of the motor buckle are fixed on the second mounting plate, and the middle part of the motor buckle is clamped and fixed on the motor housing.

[0015] Preferably, a first bearing is provided at the connection between one end of the support shaft and the hub shell, a second bearing is provided at the connection between the other end of the support shaft and the hub cover, and a gasket is provided on the side of the clamping member close to the first bearing or the second bearing, and the gasket rests on the inner ring of the first bearing or the second bearing.

[0016] Preferably, the clamping member is an end cover nut, both ends of the support shaft are provided with threaded lines, and the end cover nut is fixed on the threaded lines.

[0017] Preferably, the reducer device includes multiple reduction gears and synchronous teeth, each reduction gear is rotatably fixed on the mounting bracket, the synchronous teeth are rotatably sleeved on the support shaft, the synchronous teeth and the driving wheel maintain synchronous rotation, and the driving wheel is clip-fitted onto the driven wheel.

[0018] Preferably, a clutch device is further included, wherein the clutch device includes a clutch rotor and a clutch stator, the clutch rotor is fixed on the support shaft, the clutch stator is connected to the synchronous teeth, the cross-section of the clutch stator is a straight slot shape, and both sides of the clutch stator are provided with cylindrical magnets and magnet slots.

[0019] Technical advantages of this application:

[0020] 1. The utility model forms a sealed accommodation cavity between the hub shell and the hub cover to prevent external water and dust particles from entering the shell. The wires are stored in the hollow support shaft, and the overall safety protection performance is good;

[0021] 2. By setting the clamping piece, the connection between the support shaft and the camping cart can be made more stable, preventing the support shaft from falling off;

[0022] 3. The drive motor is set to provide power for the entire hub of the scooter, and the reduction gear device increases the driving torque, which can greatly assist the outdoor personnel to push the entire camping car. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The illustrations, together with their description, serve to explain the application.

[0024] Figure 1 The perspective view of the hub motor for the scooter according to an embodiment of the present application is shown.

[0025] Figure 2 The assembly view of the hub motor for the scooter according to an embodiment of the present application is shown.

[0026] Figure 3 The internal structure view of the hub motor for the scooter according to an embodiment of the present application is shown.

[0027] Figure 4 The cross-sectional view of the hub motor for the scooter according to an embodiment of the present application is shown.

[0028] Figure 5 The internal side view of the hub motor for the scooter according to an embodiment of the present application is shown.

[0029] Figure 6 The internal rear structure view of the hub motor for the scooter according to an embodiment of the present application is shown.

[0030] Figure 7 The enlarged view of the A portion structure in the hub motor for the scooter according to an embodiment of the present application is shown. Figure 6

[0031] Figure 8 The structure view of the clutch device according to an embodiment of the present application is shown.

[0032] Reference signs: housing 1; hub shell 11; hub cover 12; accommodating cavity 100; support shaft 2; first bearing 201; second bearing 202; wire outlet hole 20; clamping piece 21; gasket 211; threaded line 210; mounting bracket 3; first mounting plate 31; gear protection cover 311; second mounting plate 32; drive motor 4; motor shell 41; motor main shaft 42; motor output gear 43; motor buckle 44; reduction gear device 5; reduction gear 51; synchronous teeth 52; driving wheel 6; driven wheel 7; clutch device 8; clutch rotor 81; clutch stator 82; cylindrical magnet 83; magnet clamping groove 84. DETAILED DESCRIPTION

[0033] ​In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0034] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0035] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integration; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or an interaction between two components. However, the phrase "direct connection" indicates that the two connected entities are not connected through an intermediate structure, but are connected to form a whole through a connecting structure. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0036] like Figures 1 to 7 As shown, the present application provides a hub motor for a power-assisted vehicle, which is used to replace two or four wheels of a camping cart. Different power levels can be set according to needs, and it can be set to front-wheel drive, rear-wheel drive, or four-wheel drive to provide driving power for the camping cart.

[0037] On a relatively flat road, the drive motor in the wheel hub motor can be turned off and used as a normal wheel hub, mainly driven by manual pulling force;

[0038] On an inclined slope or uneven road surface, the drive motor in the hub motor of the power-assisted vehicle is started to provide power assistance to the entire power-assisted vehicle and provide convenience for the user.

[0039] In one embodiment of the present application

[0040] like Figures 1-2 As shown: A hub motor for a power-assisted vehicle includes an outer shell 1 and a support shaft 2. The outer shell 1 and the support shaft 2 are rotatably matched, and both ends of the support shaft 2 are tightly fixed on the bracket of the camping cart.

[0041] like Figures 2-3 As shown, the outer shell 1 of the present invention includes a hub shell 11 and a hub cover 12 . The hub shell 11 is in the shape of a wheel and is hollow inside. The hub cover 12 is detachably connected to the hub shell 11 .

[0042] Since the outdoor environment is relatively harsh, with a lot of dust and stone particles, and this device is in direct contact with the ground, it may pass through puddles or wet flowers and grass. Therefore, good sealing measures are required. First, a hook is provided on the hub cover 12, so that the hub cover 12 is clamped on the hub cover 12, and a sealed accommodating cavity 100 is formed between the hub shell 11 and the hub cover 12, thereby protecting the internal drive motor 4 and gears and other parts.

[0043] At the same time, in order not to destroy the sealing of the entire outer shell 1 and the support shaft 2, the support shaft 2 is a hollow tube, and a wire outlet hole 20 is provided on the support shaft 2. The wires are connected to the interior through the hollow support shaft 2 and the wire outlet hole 20, and the internal drive motor and gears will not be contaminated by the outside.

[0044] One end of the support shaft 2 is rotationally engaged with the hub shell 11, and the other end of the support shaft 2 is rotationally engaged with the hub cover 12. Furthermore, in order to reduce the friction of rotation and improve the efficiency of rotation, a first bearing 201 is provided at the connection between one end of the support shaft 2 and the hub shell 11, and a second bearing 202 is provided at the connection between the other end of the support shaft 2 and the hub cover 12. The inner ring portions of the first bearing 201 and the second bearing 202 are both fixed to the support shaft 2, the outer ring portion of the first bearing 201 is fixed to the hub shell 11, and the outer ring portion of the second bearing 202 is fixed to the hub cover 12, so that the entire outer shell 1 and the support shaft 2 maintain relative rotation, and the outer shell 1 needs to rotate under the action of the internal drive motor.

[0045] In order to make the connection more stable, clamping parts 21 are respectively provided at both ends of the support shaft 2. A gasket 211 is provided on the side of the clamping part 21 close to the first bearing 201 or the second bearing 202, and the gasket 211 rests on the inner ring of the first bearing 201 or the second bearing 202.

[0046] like Figure 5 As shown: the clamping member 21 of the present invention is an end cap nut, and both ends of the support shaft 2 are provided with a thread 210, and the end cap nut is fixed on the thread 210. The end cap nut can firmly fix the support shaft 2 on the bracket of the camping cart to prevent the support shaft 2 from falling off.

[0047] like Figures 3-5As shown; a mounting bracket 3 is provided inside the present invention, and the mounting bracket 3 is fixed on the support shaft 2, and a driving motor 4 and a reducer device 5 are provided on the mounting bracket 3, and the driving motor 4 and the reducer device 5 are gear-matched; the mounting bracket 3 and the support shaft 2 remain fixed, and the driving motor 4 on the mounting bracket 3 provides rotational power for the outer shell 1, and the reducer device 5 converts the high-speed and low-torque rotation of the driving motor 4 into a low-speed and high-torque, thereby driving the entire camping cart, and a plurality of reduction gears are provided in the reducer device 5 to increase the torque.

[0048] The output end of the speed reducer device 5 is provided with a driving wheel 6 , one end of the driving wheel 6 is connected to a driven wheel 7 , and the driven wheel 7 drives the outer shell 1 .

[0049] Specific examples Figures 4-5 As shown, the mounting bracket 3 includes a first mounting plate 31 and a second mounting plate 32 , both of which are fixed on the support shaft 2 , and a screw reinforcement connection is provided between the first mounting plate 31 and the second mounting plate 32 .

[0050] like Figures 6-7 As shown: the drive motor 4 includes a motor housing 41, a motor main shaft 42 and a motor output gear 43. The drive motor 4 generally uses a DC brush motor or a DC brushless motor, which is small in size, directly driven, has a fast response speed, and the control circuit can be relatively simple to design.

[0051] The wires of the drive motor 4 are connected to the controller on the camping cart through the support shaft 2. The camping cart is also provided with a handlebar. The output power of the controller to the drive motor 4 is adjusted by the rotation amplitude of the handlebar to affect the speed of the motor shaft 42 in the drive motor 4.

[0052] The motor output gear 43 is sleeved on the motor main shaft 42, and the motor output gear 43 is matched with the gear of the reducer device 5. The end of the motor housing 41 close to the motor output gear 43 is fixed on the first mounting plate 31, and the tail end of the motor housing 41 is fixed on the second mounting plate 32.

[0053] In order to protect the gear transmission connection between the motor output gear 43 and the reduction gear 51 , a gear protection cover 311 is further provided on the first mounting plate 31 , and the motor output gear 43 is located in the gear protection cover 311 .

[0054] In order to fix the drive motor 4 and prevent the drive motor 4 from rotating, a motor clip 44 is provided on the second mounting plate 32. Both ends of the motor clip 44 are fixed on the second mounting plate 32. Both ends of the motor clip 44 are fixed with screws, and the middle part of the motor clip 44 is clipped and fixed to the motor housing 41.

[0055] As Figure 5 shown: the speed reducer device 5 includes a plurality of reduction gear 51 and synchronous tooth 52, in the utility model, the reduction gear 51 is provided with two, two reduction gear 51 gear transmission in turn, each reduction gear 51 middle is provided with the rotating shaft, the reduction gear 51 and rotating shaft rotation cooperation, rotating shaft is fixed on the mounting bracket 3,

[0056] reduction gear 51 and synchronous tooth 52 gear transmission, synchronous tooth 52 rotation sleeve set on the support shaft 2, the synchronous tooth 52 and driving wheel 6 keep synchronous rotation, the driving wheel 6 is clamped sleeve set on the driven wheel 7, and the driven wheel 7 and wheel hub shell 11 integral structure.

[0057] As Figure 8 shown: the utility model still includes clutch device 8, the clutch device 8 includes clutch rotor 81 and clutch stator 82, the clutch rotor 81 is fixed on support shaft 2, the clutch stator 82 is connected on the synchronous tooth 52, the section of clutch stator 82 is straight slot mouth shape, both sides of clutch stator 82 are provided with cylindrical magnet 83 and magnet clamping groove 84.

[0058] But when the motor rotates, synchronous tooth 52 drives clutch stator 82 to rotate 1 / 4 or 1 / 2, makes cylindrical magnet 83 extrusion into magnet clamping groove 84, so that synchronous tooth 52 can drive driving wheel 6.

[0059] When the motor does not rotate, two cylindrical magnets 83 attract each other, adhere to the both sides of clutch stator 82, limit the rotation of clutch stator 82, namely when the external push, hand pull drive, because motor, synchronous tooth 52, clutch stator 82 are not rotated, cylindrical magnet 83 is attracted on the both sides of clutch stator 82, and cylindrical magnet is located in the arc-shaped gap of clutch rotor 82 and synchronous tooth 52, therefore, the rotation of shell body 11 will not reverse influence inner disc gear and motor.

[0060] Operating principle: after the rotation of motor main shaft 42 of drive motor 4, each reduction gear 51 is driven by motor output gear 43, reduction gear 51 drives synchronous tooth 52, and synchronous tooth 52 and driving wheel 6, driven wheel 7 keep coaxial synchronous rotation, so that shell body 1 rotates relative to support shaft 2.

[0061] In the application, the utility model discloses a sealed containing cavity formed between the wheel hub shell and the wheel hub cover, prevents the water and dust particles of outside from entering the shell interior, stores the electric wire through the hollow support shaft, and the overall safety protection performance is good;Through setting up the clamping piece, the support shaft and the camping cart connection can be more stable, prevent the support shaft from falling off;Through setting up the driving motor to provide power for the whole moped wheel hub, and the driving torque of speed reducer device is increased, can greatly assist the outdoor personnel to push the whole camping car.

[0062] The technical features of the above-described embodiments can be combined in any manner, and the method steps are not limited in execution order. To make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as falling within the scope of the present application.

[0063] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A hub motor for a power-assisted vehicle, characterized in that: include: An outer shell (1), the outer shell (1) comprising a hub shell (11) and a hub cover (12), the hub cover (12) being detachably connected to the hub shell (11), and a sealed accommodating cavity (100) being formed between the hub shell (11) and the hub cover (12); A support shaft (2), one end of the support shaft (2) is rotatably engaged with the wheel hub shell (11), and the other end of the support shaft (2) is rotatably engaged with the wheel hub cover (12); the support shaft (2) is a hollow tube, a wire outlet hole (20) is provided on the support shaft (2), and clamping members (21) are provided at both ends of the support shaft (2); A mounting bracket (3), the mounting bracket (3) being fixed on the support shaft (2), a driving motor (4) and a speed reducer device (5) being provided on the mounting bracket (3), and the driving motor (4) and the speed reducer device (5) being gear-matched; The output end of the speed reducer device (5) is provided with a driving wheel (6), one end of the driving wheel (6) is connected to a driven wheel (7), and the driven wheel (7) drives the outer shell (1).

2. The hub motor for power-assisted vehicle according to claim 1, characterized in that: The mounting bracket (3) comprises a first mounting plate (31) and a second mounting plate (32), and the first mounting plate (31) and the second mounting plate (32) are both fixed on the support shaft (2).

3. The hub motor for a power-assisted vehicle according to claim 2, characterized in that: The driving motor (4) comprises a motor housing (41), a motor main shaft (42) and a motor output gear (43); the motor output gear (43) is sleeved on the motor main shaft (42); and the motor output gear (43) is gear-matched with a reducer device (5).

4. The hub motor for a power-assisted vehicle according to claim 3, characterized in that: One end of the motor housing (41) close to the motor output gear (43) is fixed on the first mounting plate (31), and the rear end of the motor housing (41) is fixed on the second mounting plate (32).

5. The hub motor for a power-assisted vehicle according to claim 4, characterized in that: A gear protection cover (311) is also provided on the first mounting plate (31), and the motor output gear (43) is located in the gear protection cover (311).

6. The hub motor for a power-assisted vehicle according to claim 5, characterized in that: A motor buckle (44) is provided on the second mounting plate (32), both ends of the motor buckle (44) are fixed on the second mounting plate (32), and the middle part of the motor buckle (44) is clamped and fixed on the motor housing (41).

7. The hub motor for a power-assisted vehicle according to claim 6, characterized in that: A first bearing (201) is provided at the connection between one end of the support shaft (2) and the hub shell (11), and a second bearing (202) is provided at the connection between the other end of the support shaft (2) and the hub cover (12). A gasket (211) is provided on one side of the clamping member (21) close to the first bearing (201) or the second bearing (202), and the gasket (211) abuts against the inner ring of the first bearing (201) or the second bearing (202).

8. The hub motor for a power-assisted vehicle according to claim 7, characterized in that: The clamping member (21) is an end cap nut, and both ends of the support shaft (2) are provided with threaded lines (210), and the end cap nut is fixed on the threaded lines (210).

9. The hub motor for a power-assisted vehicle according to claim 8, characterized in that: The reducer device (5) includes a plurality of reduction gears (51) and synchronous teeth (52), each reduction gear (51) is rotatably fixed on the mounting bracket (3), the synchronous teeth (52) are rotatably sleeved on the support shaft (2), the synchronous teeth (52) and the driving wheel (6) maintain synchronous rotation, and the driving wheel (6) is snap-fitted and sleeved on the driven wheel (7).

10. The hub motor for power-assisted vehicle according to claim 9, characterized in that: The invention also includes a clutch device (8), wherein the clutch device (8) includes a clutch rotor (81) and a clutch stator (82), wherein the clutch rotor (81) is fixed on the support shaft (2), and the clutch stator (82) is connected to the synchronous tooth (52). The cross section of the clutch stator (82) is a straight slot shape, and both sides of the clutch stator (82) are provided with cylindrical magnets (83) and magnet slots (84).

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