Electric motor with separated encoder

Abstract

The utility model belongs to the technical field of electric motorcycle motors, and particularly relates to an electric motorcycle motor with a separated encoder, the periphery of a motor main shaft is provided with a driving gear, the side surface of the driving gear is meshed with at least one driven gear, the middle part of the driven gear is provided with a gear shaft, and one end of the gear shaft is rotatably arranged in a motor shell; the other end of the gear shaft is provided with magnetic steel, an encoder circuit board is arranged in the motor end cover, the inner side of the encoder circuit board is provided with a magnetic encoder chip right opposite to the magnetic steel, the magnetic steel can be arranged at the end part of the gear shaft, and the encoder is arranged in the end cover, so that subsequent replacement and maintenance are facilitated, and in the actual operation process of the motor, the motor can be replaced conveniently. When the motor rotates, the driving gear drives the driven gear to rotate synchronously, so that the rotating speed of the motor can be accurately obtained by detecting the rotating speed of the gear shaft in the driven gear, the problem that an encoder cannot be mounted on a main shaft in the prior art is solved, and the beneficial effect of being convenient to disassemble and assemble is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric motorcycle motor technical field, especially a kind of electric motorcycle motor with separate encoder. BACKGROUND

[0002] With the rapid development of electric motorcycle industry in recent years, the demand for electric motorcycles at home and abroad is increasing. The driving system of electric motorcycle mainly includes battery, electric control, motor three big things, among the three electric systems used in the market of electric motorcycle, the motor mostly adopts middle direct drive motor, wheel side hanging motor and hub motor scheme.

[0003] Such as the utility model for patent, patent number CN201920761804.1, the power system of a kind of novel electric vehicle, it includes: rocker assembly, high-speed motor assembly and transmission assembly, the high-speed motor assembly is installed in the one side of the one end of the rocker assembly, the transmission assembly is installed in the other side of the one end of the rocker assembly;High-speed motor assembly includes: motor shell, the one end of the motor shell is fixedly connected with the one side of the one end of the rocker assembly;Motor cover, the motor cover is fixedly connected with the other end of the motor shell, the motor cover, the motor shell and the rocker assembly form first accommodating space;Motor shaft, the one end of the motor shaft sequentially passes through the one end of the rocker assembly, the motor shell and the motor cover, and the motor shaft is rotatably connected with the rocker assembly, the other end of the motor shaft is installed with first gear;Induction magnet base, the induction magnet base is located at the end of the one end of the motor shaft;Induction magnet, the induction magnet is located on the induction magnet base;Motor stator, the motor stator is installed in the inner periphery of the motor shell, and the motor stator is located in the first accommodating space;Motor rotor, the motor rotor is fixedly sleeved on the one end of the motor shaft, and the motor rotor is located in the motor stator;Magnetic encoder cover, the magnetic encoder cover is fixedly connected with the side of the motor cover away from the motor shell;Magnetic encoder, the magnetic encoder is located between the magnetic encoder cover and the motor cover, and the magnetic encoder is fixedly connected with the motor cover by magnetic encoder mounting plate, and the magnetic encoder is opposite the induction magnet.

[0004] The induction magnet in the motor is arranged at the end of the motor shaft, the magnetic encoder is fixedly connected with the motor cover by the magnetic encoder mounting plate, and the encoder is a vulnerable component and is easy to damage, if disassembled for repair, since there are many parts here, disassembly is very complex, and there is no position for installing the encoder and the magnet on the main shaft of part of electric motorcycle, so the structure needs to be further improved. UTILITY MODEL CONTENTS

[0005] The utility model discloses a purpose is provided with a separate type encoder's electric motorcycle motor, through the driven gear, solve the installation problem of encoder.

[0006] The utility model discloses a purpose is realized like this: a separate type encoder's electric motorcycle motor, including motor casing and motor end cover, be provided with motor spindle in the motor casing, and the outer periphery of motor spindle is provided with driving gear, and the side of driving gear is engaged with at least one driven gear, and the middle part of driven gear is installed with gear shaft, and one end of gear shaft can rotate and set up in the motor casing, and the other end of gear shaft is installed with magnetic steel, install the cavity in the motor end cover and set up the installation hole for gear shaft to pass through in the install the cavity, and be provided with encoder circuit board in the install the cavity, and the inside of encoder circuit board is provided with the magnetic encoder chip of just for magnetic steel, and the outside of encoder circuit board is provided with the encoder end cover for sealing install the cavity, and the encoder end cover is detachably connected with motor end cover.

[0007] Preferably, the diameter of the driven gear is the same as the diameter of the driving gear.

[0008] Preferably, the driven gear and the driving gear further engage an intermediate gear, and the diameter of the intermediate gear is greater than the diameter of the driving gear.

[0009] Preferably, a sealing gasket is arranged between the encoder end cover and the motor end cover.

[0010] Preferably, a wire slot is formed in the sidewall of the installation cavity.

[0011] The utility model discloses compared with prior art highlights and beneficial technical effect is:

[0012] The utility model discloses through the design of driven gear, can set up magnetic steel at the end of gear shaft, and install the encoder in the end cover, so that the subsequent replacement maintenance is convenient, and the motor is in the actual operation process, will drive driven gear synchronous rotation through driving gear, thus through the rotational speed of gear shaft in driven gear can accurately obtain the rotational speed of motor, both solve the problem that the encoder cannot be installed on the main shaft in the prior art, realize the beneficial effect that dismounting is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the installation structure schematic drawing of the utility model.

[0014] Figure 2 It is the structure schematic drawing when the motor is removed end cover.

[0015] Figure 3 It is the part explosion structure schematic drawing of the encoder component in the motor.

[0016] Figure 4Structure diagram of end cover and encoder assembly.

[0017] Reference signs: 1 - motor housing; 2 - motor end cover; 3 - motor main shaft; 4 - driving gear;

[0018] 5 - driven gear; 6 - gear shaft; 7 - magnetic steel; 8 - mounting cavity; 9 - mounting hole; 10 - encoder circuit board; 11 - magnetic encoder chip; 12 - encoder end cover; 13 - intermediate gear; 14 - sealing gasket; 15 - wire slot. DETAILED DESCRIPTION

[0019] The specific embodiments of the utility model will be further described in detail below with reference to the drawings.

[0020] As Figures 1-4 shown, a scooter motor with a split encoder, comprising a motor housing 1 and a motor end cover 2, the motor housing 1 is provided with a motor main shaft 3, the outer periphery of the motor main shaft 3 is provided with a driving gear 4, the side of the driving gear 4 is engaged with at least one driven gear 5, the middle of the driven gear 5 is provided with a gear shaft 6, one end of the gear shaft 6 is rotatably arranged in the motor housing 1, the other end of the gear shaft 6 is provided with a magnetic steel 7, the motor end cover 2 is provided with a mounting cavity 8, the mounting cavity 8 is provided with a mounting hole 9 for the gear shaft 6 to pass through, the mounting cavity 8 is provided with an encoder circuit board 10, the inner side of the encoder circuit board 10 is provided with a magnetic encoder chip 11 opposite to the magnetic steel 7, the outer side of the encoder circuit board 10 is provided with an encoder end cover 12 for sealing the mounting cavity 8, and the encoder end cover 12 is detachably connected with the motor end cover 2.

[0021] The utility model discloses a driven gear 5 design, can set up magnetic steel at the end of gear shaft 6, and install the encoder in the end cover, in order to facilitate the subsequent replacement maintenance, and the motor in the actual operation process, will drive driven gear 5 synchronous rotation through driving gear 4, therefore through the rotational speed of gear shaft 6 in driven gear 5 can accurately obtain the rotational speed of motor, both solve the problem that the encoder cannot be installed on the main shaft in the prior art, realize the beneficial effect that dismounting is convenient.

[0022] The diameter of the driven gear 5 is the same as that of the driving gear 4, and the speed ratio of the driven gear 5 and the driving gear 4 is 1:1, so that the rotational speeds of the two are the same and synchronous, which can reduce errors and ensure detection accuracy. The rotational speed of the driven gear 5 measured by the encoder is equivalent to the rotational speed of the motor.

[0023] The driven gear 5 is also engaged with the intermediate gear 13, the diameter of the intermediate gear 13 is greater than the diameter of the driving gear 4, in the actual installation process, the encoder can be arranged on any gear directly or indirectly engaged with the driven gear 5, not limited to the driven gear 5 in the technical scheme.

[0024] The sealing gasket 14 is arranged between the encoder end cover 12 and the motor end cover 2, the sealing property is improved, dust and sundries are prevented from entering the encoder, and the service life is prolonged.

[0025] The wire groove 15 is arranged on the side wall of the mounting cavity 8.

[0026] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall into the scope of the utility model claimed for protection. The scope of protection of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A scooter motor with a split encoder, characterized by, The application relates to a motor, which comprises a motor casing (1) and a motor end cover (2), a motor main shaft (3) is arranged in the motor casing (1), a driving gear (4) is arranged on the outer periphery of the motor main shaft (3), at least one driven gear (5) is engaged with the side surface of the driving gear (4), a gear shaft (6) is arranged in the middle of the driven gear (5), one end of the gear shaft (6) is rotatably arranged in the motor casing (1), a magnetic steel (7) is arranged on the other end of the gear shaft (6), an installation cavity (8) is arranged in the motor end cover (2), an installation hole (9) is arranged in the installation cavity (8) and used for allowing the gear shaft (6) to pass through, an encoder circuit board (10) is arranged in the installation cavity (8), a magnetic encoder chip (11) is arranged on the inner side of the encoder circuit board (10) and faces the magnetic steel (7), an encoder end cover (12) is arranged on the outer side of the encoder circuit board (10) and used for sealing the installation cavity (8), and the encoder end cover (12) is detachably connected with the motor end cover (2).

2. The electric scooter motor with split encoder of claim 1, wherein: The diameter of the driven gear (5) is the same as that of the driving gear (4).

3. The electric motor of claim 1 or 2, wherein: The driving gear (4) and the driven gear (5) are further engaged with an intermediate gear (13), and the diameter of the intermediate gear (13) is larger than that of the driving gear (4).

4. The electric scooter motor with a split encoder of claim 1, wherein: A sealing gasket (14) is arranged between the encoder end cover (12) and the motor end cover (2).

5. The electric scooter motor with split encoder of claim 1, wherein: A wire slot (15) is arranged on the side wall of the installation cavity (8).

Images