Booster bicycle hub motor with planetary gear structure

Abstract

The utility model discloses a booster bicycle hub motor with a planetary gear structure, which comprises a main shaft, one end of the main shaft is provided with an oil groove, a piston is installed in the oil groove in a sliding connection mode, the piston is elastically connected with the end portion of the oil groove through a spring, and one end of the main shaft is provided with a one-way oil injection hole. Lubricating oil can be slowly released to the planetary gear structure when the motor runs, the lubricating oil is injected into the oil groove through the one-way oil injection hole during use, the piston is extruded through the spring to enable the lubricating oil to be conveyed into the oil pipe, when the motor runs, the lubricating oil is released, and therefore the gear ring is lubricated, and due to the fact that the gear ring rotates all the time, the service life of the gear ring is prolonged. Compared with an existing hub motor, the hub motor has the advantages that lubricating oil can be slowly released when the motor is used, so that the planetary gear structure is lubricated, gear abrasion is reduced, and the service life of the motor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheel hub motor technical field, concretely relates to a power-assisted bicycle wheel hub motor with planetary gear structure. BACKGROUND

[0002] Electric vehicles are widely used at home and abroad, among them, power-assisted bicycles are very popular, power-assisted bicycles not only have the pedal function of bicycles, but also have the power-assisted driving function of electric vehicles, so that power-assisted bicycles do not cause too much burden on the rider, and the power can be adjusted according to different road conditions, which is convenient for users to use. At present, the commonly used one is a wheel hub motor.

[0003] The wheel hub motor in the prior art comprises a rotor, a stator, a wheel hub shell, a middle shaft and a planetary gear reduction mechanism, the traditional planetary gear reduction mechanism lacks lubrication, and long-term use will cause gear wear, thereby affecting transmission efficiency.

[0004] Therefore, how to provide a power-assisted bicycle wheel hub motor with a planetary gear structure to solve the problems existing in the prior art is of great significance to its application. UTILITY MODEL CONTENTS

[0005] Therefore, the purpose of the present application is to provide a power-assisted bicycle wheel hub motor with a planetary gear structure to solve the problem of lack of lubrication in the traditional planetary gear reduction mechanism, which will cause gear wear after long-term use, thereby affecting transmission efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A power-assisted bicycle wheel hub motor with a planetary gear structure comprises a main shaft, an oil groove is formed at one end of the main shaft, a piston is installed inside the oil groove and is connected by sliding, the piston and the end of the oil groove are connected by a spring, a one-way oil injection hole is arranged at one end of the main shaft, the one-way oil injection hole is communicated with the oil groove, an oil pipe is connected to one end of the oil groove close to the one-way oil injection hole, a side shell is fixedly connected to the oil groove, a rotating disc is rotatably connected inside the side shell, a groove is installed at the top end of the rotating disc, an oil inlet and an oil outlet are formed at the top end and the bottom end of the side shell respectively, a side cover is fixedly connected to one side of the side shell, and the oil inlet is connected to the liquid outlet end of the oil pipe.

[0008] Preferably, the rotating shaft of the rotating disc is fixedly connected with a rotating shaft, and the end of the rotating shaft is provided with a meshing gear.

[0009] Preferably, the main shaft is fixedly connected with a planet carrier, the planet carrier is rotationally connected with a planet gear, the main shaft is fixedly connected with an inner rotor, the inner rotor is rotationally connected with an outer stator, the output end of the outer stator is provided with a sun gear, and the sun gear is in meshing connection with a meshing gear.

[0010] Preferably, the two ends of the main shaft are rotationally connected with a hub shell two and a hub shell one respectively, the inside of the hub shell two is provided with an outer ring gear, and the planet gear is in meshing connection with the outer ring gear.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] The utility model discloses a wheel hub motor, which can release lubricating oil to the planet gear structure when the motor is running, and the lubricating oil is injected into the oil groove through the one-way oil injection hole when in use, and the lubricating oil is delivered into the oil pipe through the spring extruding piston, when the motor is running, the outer stator drives the sun gear to rotate, the sun gear drives the rotating disc to rotate through the meshing gear, when the groove of the rotating disc is connected with the oil inlet, the groove is filled with lubricating oil at this time, when the groove is connected with the oil outlet, the lubricating oil is released, thereby lubricating the gear ring, since the gear ring rotates all the time and is in meshing connection with the planet gear, the whole planet gear structure is lubricated, compared with the prior art, the utility model can slowly release the lubricating oil when the motor is used, thereby lubricating the planet gear structure, reducing the gear wear and improving the service life of the motor.

[0013] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, the contents of the description can be implemented, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following will be described in detail with the preferred embodiments of the application and the accompanying drawings.

[0014] According to the detailed description of the specific embodiments of the application in the following text combined with the drawings, those skilled in the art will more clearly understand the above and other purposes, advantages and characteristics of the application. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creating laborious work. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0016] Figure 1 It is a structural schematic view of the utility model.

[0017] Figure 2 For Figure 1 Enlarged view of A in

[0018] Figure 3 For the structure diagram of the rotating disc in the utility model.

[0019] In the figure: 1, main shaft; 2, inner rotor; 3, sun gear; 4, outer stator; 5, wheel hub shell one: 6, outer ring gear; 7, planetary gear; 8, wheel hub shell two; 9, planet carrier; 10, spring; 11, piston; 12, oil groove; 13, one-way oil injection hole; 14, oil pipe; 15, meshing gear; 16, side cover; 17, oil drain; 18, rotating shaft; 19, side shell; 20, groove; 21, oil inlet; 22, rotating disc. DETAILED DESCRIPTION

[0020] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the drawings in the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the present application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of known functions and structures are omitted in the embodiments for the sake of clarity and conciseness.

[0021] In addition, reference numerals and / or letters can be repeated in different examples in the present application. Such repetition is for the purpose of simplification and clarity, and does not itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0022] The term "and / or" herein is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, B exists alone, and A and B exist together. The term "and" herein is a description of another association relationship of the associated objects, which means that there can be two relationships, for example, A and B can mean that A exists alone and A and B exist together. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0023] It should also be noted that the relationship terms such as first and second in the present application are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion.

[0024] Referring to Figures 1-3 The utility model provides a kind of technical scheme of power-assisted bicycle hub motor with planetary gear structure: including main shaft 1, the one end of main shaft 1 is provided with oil groove 12, oil groove 12 is installed with piston 11 slidingly connected, piston 11 is elastically connected between the end of oil groove 12 by spring 10, the one end of main shaft 1 is provided with one-way oil injection hole 13, one-way oil injection hole 13 is communicated with oil groove 12, the one end of oil groove 12 near one-way oil injection hole 13 is connected with oil pipe 14, oil groove 12 is fixedly connected with side shell 19, rotating disc 22 is rotatably connected in the inside of side shell 19, recess 20 is installed at the top of rotating disc 22, oil inlet 21 and oil discharge port 17 are respectively provided in the top and bottom of side shell 19, side cover 16 is fixedly connected on one side of side shell 19, oil inlet 21 is connected with the liquid outlet end of oil pipe 14.

[0025] The rotating shaft of rotating disc 22 is fixedly connected with rotating shaft 18, and the tail end of rotating shaft 18 is installed with meshing gear 15.

[0026] Main shaft 1 is fixedly connected with planet carrier 9, planet carrier 9 is rotatably connected with planetary gear 7, main shaft 1 is fixedly connected with inner rotor 2, inner rotor 2 is rotatably connected with outer stator 4, and sun gear 3 is installed at the output end of outer stator 4, sun gear 3 is meshingly connected with meshing gear 15, the other side of main shaft 1 is provided with wire hole, and motor power line is electrically connected with stator 2 through wire hole; when power supply, outer stator 4 outputs power to planetary gear 7 through sun gear 3, planetary gear 3 drives hub to rotate through gear ring 6, to realize hub drive.

[0027] The both ends of main shaft 1 are rotatably connected with hub shell two 8 and hub shell one 5, respectively, outer gear ring 6 is installed in the inside of hub shell two 8, and planetary gear 7 is meshingly connected with outer gear ring 6.

[0028] Specific use, lubricating oil is injected into the inside of oil groove 12 through one-way oil injection hole 13, and the piston 11 is extruded by the spring 10 so that the lubricating oil is delivered to the oil pipe 14, when the motor is running, the outer stator 4 drives the sun gear 3 to rotate, the sun gear 3 drives the rotating disc 22 to rotate through the meshing gear 15, when the recess 20 of the rotating disc 22 is connected with the oil inlet 21, the recess 20 is filled with lubricating oil at this time, when the recess 20 is connected with the oil discharge port 17, the lubricating oil is released, so as to lubricate the gear ring 6, since the gear ring 6 is always rotating, and the gear ring 6 is meshed with the planetary gear 7, the entire planetary gear structure is lubricated, compared with the existing hub motor, the utility model can slowly release the lubricating oil when the motor is used, so as to lubricate the planetary gear structure, reduce the gear wear, and improve the service life of the motor.

[0029] The above merely describes preferred embodiments of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application can be variously changed and modified. Any change, modification, replacement, integration and parameter change of the embodiments within the spirit and principle of the present application, which can realize the same function without departing from the principle and spirit of the present application, falls within the protection scope of the present application.

Claims

1. A power-assisted bicycle hub motor having a planetary gear structure, characterized by: The utility model relates to a single -way oil injection hole (13) is provided to the one end of main shaft (1), single -way oil injection hole (13) with oil groove (12) intercommunication, and the one end of oil groove (12) is connected with oil pipe (14) near single -way oil injection hole (13), and oil groove (12) fixedly connected with side shell (19), the inside rotation is connected with rotary disc (22) to side shell (19), the top of rotary disc (22) is installed with recess (20), and the top and bottom of side shell (19) are set up oil inlet (21) and oil outlet (17) respectively, and one side of side shell (19) is fixedly connected with side cover (16), and oil inlet (21) is connected with the liquid outlet end of oil pipe (14).

2. A hub motor for a power assisted bicycle having a planetary gear arrangement according to claim 1, characterised in that: The rotating shaft of the rotary disc (22) is fixedly connected with a rotating shaft (18), and the distal end of the rotating shaft (18) is provided with an engaging gear (15).

3. A hub motor for a power assisted bicycle having a planetary gear arrangement according to claim 2, characterised in that: The main shaft (1) is fixedly connected with a planet carrier (9), the planet carrier (9) is rotatably connected with a planet gear (7), the main shaft (1) is fixedly connected with an inner rotor (2), the inner rotor (2) is rotatably connected with an outer stator (4), the output end of the outer stator (4) is provided with a sun gear (3), and the sun gear (3) is rotatably connected with the engaging gear (15).

4. A hub motor for a power assisted bicycle having a planetary gear arrangement according to claim 3, characterised in that: The two ends of the main shaft (1) are rotatably connected with a hub shell two (8) and a hub shell one (5) respectively, the inside of the hub shell two (8) is provided with an outer gear ring (6), and the planet gear (7) is rotatably connected with the outer gear ring (6).

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