Gear motor of electric two-wheeled vehicle

Abstract

The utility model provides a gear motor of an electric two-wheeled vehicle. The gear motor comprises a motor shell, a stator assembly, a rotor assembly, a motor shaft, an input tooth and an output tooth, the stator assembly, the rotor assembly and the motor shaft are arranged in the motor shell, the stator assembly is arranged around the periphery of the rotor assembly, and the rotor assembly is connected with the motor shaft; the input gear is connected with a motor shaft, the output gear is in meshed connection with the input gear, the output gear is installed on an output gear shaft, and the output gear shaft is used for being connected with load equipment; a connecting structure is arranged on the input tooth, the connecting structure is connected with the motor shell through a connecting bearing, and the connecting bearing is used for sharing the stress of the input tooth. According to the utility model, the small gear supported by a cantilever is changed to be supported by the bearing, and the stress of the gear is shared by the shell, so that the service life of the motor is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, specifically, a kind of electric two-wheeled vehicle reduction motor, especially a motor power assembly with reduction gearbox. BACKGROUND

[0002] Motor with input tooth and output tooth generally refers to gear motor or gear reduction motor, and the motor realizes the conversion of rotation speed and torque through built-in gear transmission system, and the working principle is generally as follows: the motor converts electrical energy into mechanical energy to generate a high-speed rotating rotor, the motor rotor transmits power to the gear transmission system through the input tooth, and the rotation speed is reduced and the torque is increased through the meshing of gear set (including input tooth and output tooth), and the low-speed high-torque power after gear transmission is transmitted to the load equipment through the output tooth.

[0003] During the rotation of the gear, different direction forces (axial and radial) are generated, i.e., the gear generates axial force towards the inside of the motor during operation, and radial force at the meshing part, the existing motor directly connects the input tooth to the motor shaft in some way, and the force of the input tooth is borne by the motor shaft, which reduces the service life of the motor.

[0004] The patent document with publication number CN219487081U discloses a drive axle device for an electric vehicle, wherein the drive axle device at least includes: a drive motor with an output shaft; a speed reducer with an input gear and an output gear that mesh with each other, the input gear is torsionally connected with the output shaft of the drive motor; a differential is configured to rotate with the output gear, wherein the input gear and the output gear are connected in an internal meshing manner. However, the input tooth of the patent document is directly connected to the motor shaft, and the defect of reducing the service life of the motor still exists because part of the force is borne by the motor shaft. UTILITY MODEL CONTENTS

[0005] In view of the defects in the prior art, the utility model aims to provide an electric two-wheeled vehicle reduction motor.

[0006] According to the electric two-wheeled vehicle reduction motor provided by the utility model, the motor shell, the stator assembly, the rotor assembly, the motor shaft, the input tooth and the output tooth are included.

[0007] The stator assembly, the rotor assembly and the motor shaft are arranged in the motor shell, the stator assembly surrounds the periphery of the rotor assembly, and the rotor assembly is connected with the motor shaft.

[0008] The input tooth is connected with the motor shaft, the output tooth is meshed with the input tooth, the output tooth is installed on an output gear shaft, and the output gear shaft is used for being connected with a load device.

[0009] The input tooth is provided with a connecting structure, the connecting structure is connected with a motor shell through a connecting bearing, and the connecting bearing is used for sharing the stress of the input tooth.

[0010] Preferably, the connecting structure comprises a first connecting structure and a second connecting structure.

[0011] The first connecting structure and the second connecting structure are respectively arranged on the two axial sides of the input tooth.

[0012] The first connecting structure is connected with the motor shell through a first connecting bearing, and the second connecting structure is connected with the motor shell through a second connecting bearing.

[0013] Preferably, the first connecting bearing and the second connecting bearing are deep groove ball bearings.

[0014] Preferably, the first connecting structure and the second connecting structure are integrally formed with the input tooth.

[0015] Preferably, the motor shell comprises a shell, a motor outgoing line end cover, a motor gear box cover and a gear box cover.

[0016] The stator assembly and the rotor assembly are arranged in the shell, and the motor outgoing line end cover and the motor gear box cover are respectively installed at two ends of the shell.

[0017] One end of the motor shaft is connected with the motor outgoing line end cover through a first mounting bearing, and the other end of the motor shaft is connected with the motor gear box cover through a second mounting bearing.

[0018] The input tooth and the output tooth are arranged in the motor gear box cover, and the gear box cover is connected with the motor gear box cover.

[0019] The first connecting structure is connected with the motor gear box cover through the first connecting bearing, and the second connecting structure is connected with the gear box cover through the second connecting bearing.

[0020] Preferably, the output gear shaft is connected with the motor gear box cover through a third connecting bearing.

[0021] The output gear shaft is connected with the gear box cover through a fourth connecting bearing.

[0022] The third connecting bearing and the fourth connecting bearing are respectively located on the two axial sides of the output tooth.

[0023] Preferably, the gear box cover is connected with the motor gear box cover through a first screw;

[0024] The motor gear box cover is connected with the casing through a screw plug.

[0025] Preferably, a first oil seal is arranged between the motor gear box cover and the motor shaft;

[0026] The first oil seal is located between the second mounting bearing and the first connecting bearing;

[0027] A second oil seal is arranged between the gear box cover and the output gear shaft.

[0028] Preferably, a magnetic steel seat, a magnetic coding cover plate and an encoder assembly are arranged in the motor outgoing line end cover;

[0029] The magnetic steel seat is used for fixing a magnetic steel; the encoder assembly is installed on the magnetic coding cover plate, and the encoder assembly is used for measuring the rotating speed and position of the motor shaft.

[0030] Preferably, a wire harness and an outgoing line pressing plate are arranged on the motor outgoing line end cover;

[0031] The outgoing line pressing plate is connected with the motor outgoing line end cover through a second screw, and the wire harness is connected on the motor outgoing line end cover through the outgoing line pressing plate.

[0032] Compared with the prior art, the utility model has the beneficial effects that:

[0033] The utility model discloses a connecting structure is arranged on the two sides of the input tooth's pivot direction, and the connecting structure is connected with the motor casing through a connecting bearing, and the connecting structure and the connecting bearing divide the gear axial force that the motor bearing bears to the casing, and the motor shaft only provides the rotating torque, thereby reducing the stress of the motor shaft, thereby effectively improving the service life of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0034] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings:

[0035] Figure 1 The profile diagram of the speed reduction motor of the electric two-wheeled vehicle Figure 1 ;

[0036] Figure 2 The profile diagram of the speed reduction motor of the electric two-wheeled vehicle Figure 2 ;

[0037] Figure 3 The bottom view of the speed reduction motor of the electric two-wheeled vehicle

[0038] Figure 4 Fig. 2 is a structural schematic diagram of a motor output terminal cover;

[0039] Figure 5 Fig. 3 is a structural schematic diagram of a motor gear box cover;

[0040] Figure 6 Fig. 4 is a structural schematic diagram of a sealing gasket;

[0041] Figure 7 Fig. 5 is a structural schematic diagram of a gear box cover.

[0042] The figures show:

[0043] Casing 1 First oil seal 15

[0044] Motor shaft 2 Gear box cover 16

[0045] First mounting bearing 3 First connecting structure 17

[0046] Second mounting bearing 4 Second oil seal 18

[0047] Output gear shaft 5 Magnetic cover plate 19

[0048] Fourth connecting bearing 6 Second screw 20

[0049] Input tooth 7 Second connecting structure 21

[0050] First connecting bearing 8 Motor output terminal cover 22

[0051] Second connecting bearing 9 Wire restraint 23

[0052] First screw 10 Output terminal pressing plate 24

[0053] Plug 11 Encoder assembly 25

[0054] Third connecting bearing 12 Wave-shaped gasket 26

[0055] Motor gear box cover 13 Sealing gasket 27

[0056] Output tooth 14 Magnetic steel seat 28 DETAILED DESCRIPTION

[0057] The utility model will be described in detail below in combination with specific embodiments. The following embodiments will help the person skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that, for those skilled in the art, without departing from the concept of the utility model, a number of changes and improvements can be made. These all belong to the protection scope of the utility model.

[0058] Embodiment:

[0059] AsFigures 1-7 As shown, the embodiment provides a two-wheeled electric vehicle reduction motor, comprising: a motor housing, a stator assembly, a rotor assembly, a motor shaft 2, an input tooth 7 and an output tooth 14; the stator assembly, the rotor assembly and the motor shaft 2 are arranged in the motor housing, the stator assembly surrounds the periphery of the rotor assembly, and the rotor assembly is connected with the motor shaft 2; the input tooth 7 is connected with the motor shaft 2, the output tooth 14 is engaged with the input tooth 7, the output tooth 14 is installed on an output gear shaft 5, and the output gear shaft 5 is used to be connected with a load device; a connecting structure is arranged on the input tooth 7, the connecting structure is connected with the motor housing 1 through a connecting bearing, and the connecting bearing is used to share the stress of the input tooth 7. The connecting structure comprises: a first connecting structure 17 and a second connecting structure 21; the first connecting structure 17 and the second connecting structure 21 are respectively arranged on the two axial sides of the input tooth 7; the first connecting structure 17 is connected with the motor housing 1 through a first connecting bearing 8, and the second connecting structure 21 is connected with the motor housing 1 through a second connecting bearing 9. The first connecting bearing 8 and the second connecting bearing 9 are both deep groove ball bearings. The first connecting structure 17 and the second connecting structure 21 are integrally formed with the input tooth 7.

[0060] The motor housing comprises: a casing 1, a motor outgoing line end cover 22, a motor gear box cover 13 and a gear box cover 16; the stator assembly and the rotor assembly are arranged in the casing 1, the motor outgoing line end cover 22 and the motor gear box cover 13 are respectively installed at the two ends of the casing 1; one end of the motor shaft 2 is connected with the motor outgoing line end cover 22 through a first mounting bearing 3, and the other end of the motor shaft 2 is connected with the motor gear box cover 13 through a second mounting bearing 4; the input tooth 7 and the output tooth 14 are arranged in the motor gear box cover 13, and the gear box cover 16 is connected with the motor gear box cover 13; the first connecting structure 17 is connected with the motor gear box cover 13 through a first connecting bearing 8, and the second connecting structure 21 is connected with the gear box cover 16 through a second connecting bearing 9. The output gear shaft 5 is connected with the motor gear box cover 13 through a third connecting bearing 12, and the output gear shaft 5 is connected with the gear box cover 16 through a fourth connecting bearing 6. The third connecting bearing 12 and the fourth connecting bearing 6 are respectively located on the two axial sides of the output tooth 14.

[0061] A wave-shaped gasket 26 is arranged between the first mounting bearing 3 and the motor outgoing line end cover 22. A sealing gasket 27 is arranged between the gear box cover 16 and the motor gear box cover 13.

[0062] The first mounting bearing 3 and the second mounting bearing 4 are both deep groove ball bearings. The third connecting bearing 12 and the fourth connecting bearing 6 are both deep groove ball bearings. The gear box cover 16 is connected with the motor gear box cover 13 through the first screw 10; the motor gear box cover 13 is connected with the casing 1 through the screw plug 11. The first oil seal 15 is arranged between the second mounting bearing 4 and the first connecting bearing 8. The second oil seal 18 is arranged between the gear box cover 16 and the output gear shaft 5. The first screw 10 is a hexagonal cylinder head screw, and the screw plug 11 is a hexagonal screw plug.

[0063] The motor outgoing terminal cover 22 is internally provided with a magnetic steel base 28, a magnetic coding cover plate 19 and an encoder assembly 29; the magnetic steel base 28 is used for fixing a magnetic steel; the encoder assembly 29 is installed on the magnetic coding cover plate 19, and the encoder assembly 29 is used for measuring the rotating speed and position of the motor shaft 2. The motor outgoing terminal cover 22 is provided with a wire harness 23 and an outgoing wire pressing plate 24; the outgoing wire pressing plate 24 is connected with the motor outgoing terminal cover 22 through the second screw 20, and the wire harness 23 is connected on the motor outgoing terminal cover 22 through the outgoing wire pressing plate 24. The second screw 20 is a hexagonal flower-shaped disc head screw with a column.

[0064] The embodiment provides a motor power assembly with a reduction gear box.

[0065] The existing motor does not arrange bearings to separate input teeth, but is directly connected to a motor shaft in a certain mode. The embodiment increases bearings in front and back of a pinion to fix to a casing, optimizes the structure of the motor, and improves the force bearing of the motor.

[0066] The embodiment divides the gear axial force borne by the motor to the casing through additional bearings, and the motor only provides a rotating torque.

[0067] The utility model discloses a connecting structure is arranged on the both sides of the rotation axis direction of input tooth, and the connecting structure is connected with the motor shell through connecting bearing, and the gear axial force borne by the motor is divided to the casing through connecting structure and connecting bearing, and the motor shaft only provides rotating torque, thereby reducing the force of the motor shaft, thereby effectively improving the service life of the motor.

[0068] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0069] The specific embodiments of the present application are described above. It should be understood that the present application is not limited to the foregoing specific embodiments, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which do not affect the essential content of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. An electric two-wheeled vehicle reduction motor characterized by comprising: The motor housing, the stator assembly, the rotor assembly, the motor shaft (2), the input tooth (7) and the output tooth (14) are included. The stator assembly, the rotor assembly and the motor shaft (2) are arranged in the motor housing, the stator assembly surrounds the periphery of the rotor assembly, and the rotor assembly is connected with the motor shaft (2). The input tooth (7) is connected with the motor shaft (2), the output tooth (14) is engaged with the input tooth (7), the output tooth (14) is installed on the output gear shaft (5), and the output gear shaft (5) is used to be connected with a load device. The input tooth (7) is provided with a connecting structure, the connecting structure is connected with the motor housing (1) through a connecting bearing, and the connecting bearing is used to share the stress of the input tooth (7). The connecting structure includes a first connecting structure (17) and a second connecting structure (21).

2. The electric two-wheeler reduction motor as claimed in claim 1, wherein, The first connecting structure (17) and the second connecting structure (21) are respectively arranged on the two axial sides of the input tooth (7). The first connecting structure (17) is connected with the motor housing (1) through a first connecting bearing (8), and the second connecting structure (21) is connected with the motor housing (1) through a second connecting bearing (9). The first connecting bearing (8) and the second connecting bearing (9) are both deep groove ball bearings.

3. The electrically driven two-wheeled vehicle reduction motor of claim 2, wherein, The first connecting structure (17) and the second connecting structure (21) are integrally formed with the input tooth (7).

4. The electrically driven two-wheeled vehicle reduction motor of claim 2, wherein, The motor housing includes a housing (1), a motor outlet cover (22), a motor gear box cover (13) and a gear box cover (16).

5. The electrically driven two-wheeled vehicle reduction motor of claim 2, wherein, The stator assembly and the rotor assembly are arranged in the housing (1), and the motor outlet cover (22) and the motor gear box cover (13) are respectively installed at two ends of the housing (1). One end of the motor shaft (2) is connected with the motor outlet cover (22) through a first mounting bearing (3), and the other end of the motor shaft (2) is connected with the motor gear box cover (13) through a second mounting bearing (4). The input tooth (7) and the output tooth (14) are arranged in the motor gear box cover (13), and the gear box cover (16) is connected with the motor gear box cover (13). The first connecting structure (17) is connected with the motor gear box cover (13) through the first connecting bearing (8), and the second connecting structure (21) is connected with the gear box cover (16) through the second connecting bearing (9). The output gear shaft (5) is connected with the motor gear box cover (13) through a third connecting bearing (12).

6. The electric two-wheeler reduction motor as claimed in claim 5, wherein, The output gear shaft (5) is connected with the gear box cover (16) through a fourth connecting bearing (6). The third connecting bearing (12) and the fourth connecting bearing (6) are respectively located on the two axial sides of the output tooth (14). The gear box cover (16) is connected with the motor gear box cover (13) through a first screw (10).

7. The electric two-wheeler reduction motor as claimed in claim 5, wherein, The motor gear box cover (13) is connected with the housing (1) through a screw plug (11). ​ 8. The electric two-wheeler reduction motor as claimed in claim 5, wherein, A first oil seal (15) is arranged between the motor gear box cover (13) and the motor shaft (2); The first oil seal (15) is located between the second mounting bearing (4) and the first connecting bearing (8); A second oil seal (18) is arranged between the gear box cover (16) and the output gear shaft (5).

9. The electric two-wheeler reduction motor as claimed in claim 5, wherein, A magnetic steel seat (28), a magnetic coding cover plate (19) and an encoder assembly (29) are arranged in the motor outgoing line end cover (22); The magnetic steel seat (28) is used for fixing the magnetic steel; the encoder assembly (29) is installed on the magnetic coding cover plate (19), and the encoder assembly (29) is used for measuring the rotating speed and position of the motor shaft (2).

10. The electric two-wheeler reduction motor as claimed in claim 5, wherein, A wire harness (23) and an outgoing line pressing plate (24) are arranged on the motor outgoing line end cover (22); The outgoing line pressing plate (24) is connected with the motor outgoing line end cover (22) through a second screw (20), and the wire harness (23) is connected on the motor outgoing line end cover (22) through the outgoing line pressing plate (24).

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