Scooter hub motor with protection function

Abstract

The utility model discloses a scooter hub motor with a protection function in the technical field of hub motors, which comprises a shaft body, an end cover is rotatably connected to the peripheral side surface of the shaft body, an electric drive module is connected to the peripheral side surface of the shaft body, an outer gear ring is in transmission connection to the peripheral side surface of the electric drive module through a transmission assembly, and the transmission assembly is sleeved on the outer side of the shaft body. A plurality of transmission arc blocks distributed in a circumferential array mode are fixedly installed on the surface, opposite to the end cover, of the outer gear ring, a guide arc rod is fixedly installed on the back face of each transmission arc block, an electromagnetic column is fixedly installed on the surface of each guide arc rod, and a set of stress arc blocks distributed in a circumferential array mode are fixedly installed on the back face of the end cover. According to the utility model, the electromagnetic control structure is added on the basis of a tooth-breaking-prevention buffer protection structure in a traditional hub motor, and when the hub motor is used, the wear rate of the elastic member and the probability of uncontrollable deformation or excessive deformation can be effectively reduced through the addition of the electromagnetic columns and the permanent magnet columns.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheel hub motor technical field, concretely is a scooter wheel hub motor with protection function. BACKGROUND

[0002] At present, the scooter is through wheel hub motor to carry out motion control, when the wheel hub motor starts / stops, accelerates / decelerates, the gear of deceleration mechanism bears greater impact force, and the planetary gear with lower structural strength will appear broken teeth, in order to solve the problems in the above background art, the patent document with publication number CN212627511U discloses a gear protection mechanism of electric bicycle wheel hub motor, the transmission force tooth, the circular ring and the force tooth in the motor are integrally molded with the body connected therewith, the cost is slightly increased, but effectively solves the broken teeth failure of wheel hub motor, and the wheel hub motor is provided with the elastic buffer structure of starting tooth, and then the broken teeth probability of gear in the motor is reduced, but the elastic structure in the above motor is easy to wear and tear and uncontrollable deformation in the reciprocating start-stop of the motor, and the elastic buffer structure in the broken tooth protection of the above wheel hub motor is uncontrollable in the buffer strength and buffer degree, based on this, the utility model discloses a scooter wheel hub motor with protection function to solve the above problems. CONTENT OF UTILITY MODEL

[0003] The utility model aims at providing a scooter wheel hub motor with protection function to solve the problems of the existing wheel hub motor's broken tooth protection structure being easy to wear and tear and uncontrollable deformation and the existing broken tooth structure's buffer strength and buffer degree being uncontrollable.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: a scooter wheel hub motor with protection function, including the axle body, the end cover is rotatably connected to the circumferential side surface of the axle body, the electric drive module is connected to the circumferential side surface of the axle body, the outer gear ring is drivingly connected to the electric drive module through the transmission assembly, the transmission assembly is sleeved on the outer side of the axle body, a plurality of driving arc blocks in circumferential array distribution are fixedly installed on the surface of the opposite end cover of the outer gear ring, the back surface of each driving arc block is fixedly installed with a driving arc rod, the surface of the driving arc rod is fixedly installed with an electromagnetic column, the back surface of the end cover is fixedly installed with a group of stress arc blocks in circumferential array distribution, the end surface of each stress arc block is fixedly installed with a driven arc rod, the end of the driven arc rod is fixedly installed with a permanent magnet column with the same magnetism as the electromagnetic column, and the elastic element is installed between each driven arc rod and the adjacent driving arc rod.

[0005] Preferably, the circumferential side surface of the end cover is fixedly installed with a wheel hub body.

[0006] Preferably, the transmission components include a sun gear ring gear and a planetary carrier fixedly connected to the shaft. The sun gear ring gear is driven by an electric drive module. The sun gear ring gear is sleeved on the outer side of the shaft. A set of planetary gears arranged in a circumferential array are rotatably connected to the inner wall of the planetary carrier. The circumferential side of each planetary gear is connected to the outer gear ring and the sun gear ring gear.

[0007] Preferably, the elastic element is a spring or a rubber rod.

[0008] Preferably, the guide arc rod and the driven arc rod have the same arc diameter, and the arc centers of the guide arc rod and the driven arc rod are on the axis of the shaft.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention adds an electromagnetic control structure to the traditional anti-tooth breakage buffer protection structure in a hub motor. During use, the addition of electromagnetic columns and permanent magnet columns can effectively reduce the wear rate of the elastic component and the probability of uncontrollable or excessive deformation. On the other hand, it can effectively control the buffer strength and buffer force of the elastic buffer structure during elastic buffering. Through the controllability of the buffer force and buffer strength, the anti-tooth breakage effect of this hub motor is effectively improved. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the electric drive module and the force-bearing arc block of this utility model;

[0014] Figure 3 This utility model Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0015] Figure 4 This is a schematic diagram of the transmission arc block and sun gear ring of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the external gear ring and transmission arc block of this utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the elastic element of this utility model.

[0018] The components represented by the numbers in the drawings are listed as follows:

[0019] 1-axle body, 2-end cover, 3-electric drive module, 4-outer gear ring, 5-transmission arc block, 6-guiding arc rod, 7-permanent magnet column, 8-force receiving arc block, 9-driven arc rod, 10-electromagnetic column, 11-sun gear ring, 12-planetary carrier, 13-planetary gear, 14-elastic member, 15-hub body. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-6 The utility model provides a kind of technical solutions: a scooter hub motor with protection function, including axle body 1, when using, axle body 1 is installed on scooter, the circumferential surface of axle body 1 is rotatably connected with end cover 2, the circumferential surface of end cover 2 is fixedly installed with hub body 15;

[0022] The circumferential surface of axle body 1 is connected with electric drive module 3, the circumferential surface of electric drive module 3 is connected with outer gear ring 4 by transmission assembly, and the transmission assembly is sleeved on the outside of axle body 1.

[0023] Transmission assembly includes sun gear ring 11 and planetary carrier 12 fixedly connected with axle body 1 respectively, sun gear ring 11 is driven by electric drive module 3, sun gear ring 11 is sleeved on the outside of axle body 1, the inner wall of planetary carrier 12 is rotatably connected with a group of circumferentially arrayed planetary gears 13, and the circumferential surface of each planetary gear 13 is connected with outer gear ring 4 and sun gear ring 11

[0024] Electric drive module 3 includes outer rotor assembly and inner stator assembly, and the inner stator assembly is fixedly connected with axle body 1, and the outer rotor assembly is connected with outer gear ring 4.

[0025] Outer rotor assembly and inner stator assembly are the common mechanism in existing hub motor, and the specific structure has been disclosed in existing file, which will not be described here.

[0026] The surface of outer gear ring 4 opposite to end cover 2 is fixedly installed with a plurality of circumferentially arrayed transmission arc blocks 5, the back surface of each transmission arc block 5 is fixedly installed with guiding arc rod 6, and the surface of guiding arc rod 6 is fixedly installed with electromagnetic column 10.

[0027] The back surface of the end cover 2 is fixedly installed with a set of force receiving arc blocks 8 arranged in a circumferential array, the end surface of each force receiving arc block 8 is fixedly installed with a driven arc rod 9, the end of the driven arc rod 9 is fixedly installed with a permanent magnet column 7 which has the same magnetism as the electromagnetic column 10, and the permanent magnet column 7 is essentially a permanent magnet;

[0028] The electromagnetic column 10 is essentially an electromagnet, generates magnetism when electrified, loses magnetism when de-energized, and has the same magnetism as the permanent magnet column 7 after being electrified, so that the permanent magnet column 7 can generate repulsion with the electromagnetic column 10 after being electrified, and the size of the repulsion can be controlled by controlling the current flowing into the permanent magnet column 7, and the greater the current, the greater the repulsion.

[0029] Each driven arc rod 9 and the adjacent driven arc rod 6 is installed with an elastic element 14, the elastic element 14 is sleeved outside the permanent magnet column 7 and the electromagnetic column 10, and the elastic element 14 is a spring or a rubber rod.

[0030] The arc diameters of the driven arc rod 6 and the driven arc rod 9 are the same, and the arc centers of the driven arc rod 6 and the driven arc rod 9 are on the axis of the shaft body 1.

[0031] The hub motor is mainly used for a scooter, when in use, the shaft body 1 is installed on the scooter, when working, the electric drive module 3 transmits power to the sun gear ring 11, the power transmitted to the sun gear ring 11 is transmitted to the outer gear ring 4 through the three planetary gears 13, the outer gear ring 4 rotates, and then the power is output to the end cover 2 and the hub body 15 through the cooperation of the transmission arc block 5 and the force receiving arc block 8, wherein, when the hub motor starts, the outer gear ring 4 rotates clockwise, when the outer gear ring 4 rotates, the electromagnetic column 10 is synchronously electrified and generates magnetism, and after the electromagnetic column 10 generates magnetism, repulsion is generated between the electromagnetic column 10 and the adjacent permanent magnet column 7, and after the electromagnetic column 10 is electrified, the size of the current flowing into the electromagnetic column 10 increases linearly, the linear increase of the current flowing into the electromagnetic column 10 linearly increases the repulsion between the driven arc rod 6 and the driven arc rod 9, and the linear change of the repulsion size makes the planetary gears 13 and the outer gear ring 4 receive linearly changeable pressure when working, without sudden impact, so as to effectively reduce the tooth breaking probability of the planetary gears 13 and the outer gear ring 4.

[0032] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments described. Obviously, according to the content of the description, many modifications and changes can be made. The description selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A skateboard wheel hub motor with protective function, comprising a shaft (1), characterized in that, An end cap (2) is rotatably connected to the circumferential side of the shaft (1). An electric drive module (3) is connected to the circumferential side of the shaft (1). An external gear ring (4) is driven to the circumferential side of the electric drive module (3) through a transmission assembly. The transmission assembly is sleeved on the outside of the shaft (1). Several transmission arc blocks (5) arranged in a circular array are fixedly installed on one surface of the external gear ring (4) opposite to the end cap (2). A guide arc rod (6) is fixedly installed on the back of each transmission arc block (5). The surface of the guide arc rod (6) is fixedly... An electromagnetic column (10) is fixedly installed. A set of force-receiving arc blocks (8) arranged in a circular array are fixedly installed on the back of the end cap (2). A driven arc rod (9) is fixedly installed on the end face of each force-receiving arc block (8). A permanent magnet column (7) with the same magnetism as the electromagnetic column (10) is fixedly installed at the end of the driven arc rod (9). An elastic element (14) is installed between each driven arc rod (9) and the adjacent guiding arc rod (6). The elastic element (14) is sleeved on the outside of the permanent magnet column (7) and the electromagnetic column (10).

2. A skateboard wheel hub motor with protective function according to claim 1, characterized in that: The hub body (15) is fixedly installed on the peripheral side of the end cap (2).

3. A skateboard wheel hub motor with protective function according to claim 1, characterized in that: The transmission components include a sun gear ring (11) and a planetary carrier (12) fixedly connected to the shaft (1). The sun gear ring (11) is driven by an electric drive module (3). The sun gear ring (11) is sleeved on the outside of the shaft (1). A set of planetary gears (13) arranged in a circular array are rotatably connected to the inner wall of the planetary carrier (12). The circumferential side of each planetary gear (13) is connected to the outer gear ring (4) and the sun gear ring (11) in a transmission connection.

4. A skateboard wheel hub motor with protective function according to claim 1, characterized in that: The elastic element (14) is a spring or a rubber rod.

5. A skateboard wheel hub motor with protective function according to claim 1, characterized in that: The guiding arc rod (6) and the driven arc rod (9) have the same arc diameter, and the arc centers of the guiding arc rod (6) and the driven arc rod (9) are on the axis of the shaft (1).

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