Motor rotor structure

Abstract

The utility model relates to the technical field of rotor structures, in particular to a motor rotor structure, which optimizes a magnetic circuit structure, greatly improves the magnetic load, greatly improves the torque density, reduces the failure of a motor winding caused by high temperature, improves the use reliability of a motor and prolongs the service life of the motor. Comprising a stator framework and a stator core, and the stator core is installed on the outer side wall of the stator framework. The motor further comprises six groups of rotor cores, six groups of long magnetic shoes and twelve groups of short magnetic shoes, one group of long magnetic shoes is arranged among the six groups of rotor cores respectively, the six groups of rotor cores and the six groups of long magnetic shoes form an integral circular ring shape, each group of rotor cores is provided with two groups of grooves, and each group of grooves is provided with two groups of short magnetic shoes. The twelve groups of short magnetic shoes are respectively embedded in the grooves of the rotor core, and the rotor core, the long magnetic shoes and the short magnetic shoes are arranged in the middle of the stator core.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rotor structure, in particular to a motor rotor structure. BACKGROUND

[0002] The motor rotor is usually made of conductor material, when the current passes through the rotor, the magnetic field is generated on the rotor, according to the electromagnetic induction principle, the magnetic field will interact with the magnetic field in the stator, thereby generating the electric torque, so that the rotor starts to rotate, and the structural design and material selection of the motor rotor have important influence on its performance.

[0003] The torque density of the brushless motor is determined by the magnetic load and the electric load of the motor body structure, increasing the electric load needs to improve the heat dissipation capacity, otherwise, the motor winding will be caused by the failure of high temperature, and the magnetic load can effectively improve the torque density of the brushless motor, and the magnetic load can be improved by optimizing the magnetic circuit structure, therefore, the utility model provides a kind of rotor magnetic circuit structure. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a kind of magnetic circuit structure is optimized, greatly improves magnetic load, greatly improves torque density, reduces the failure of motor winding caused by high temperature, improves the use reliability and service life of motor of situation, the motor rotor structure of improving the use reliability and service life of motor.

[0005] The utility model discloses a kind of motor rotor structure, including stator framework and stator core, stator core is installed on the outer side wall of stator framework;It further includes six groups of rotor cores, six groups of long magnetic tiles and twelve groups of short magnetic tiles, one group of long magnetic tile is respectively arranged between six groups of rotor cores, six groups of rotor cores and six groups of long magnetic tiles form a whole annular shape, wherein two groups of recesses are respectively arranged on each group of rotor cores, twelve groups of short magnetic tiles are respectively embedded and installed on the recess of rotor core, rotor core, long magnetic tile and short magnetic tile are set in the middle of stator core;By making the magnetic circuit of six groups of long magnetic tiles and twelve groups of short magnetic tiles in series, the magnetic circuit structure is optimized, greatly improves magnetic load, greatly improves torque density, reduces the failure of motor winding caused by high temperature, improves the use reliability and service life of motor.

[0006] Preferably, it further includes shell, shell is sleeved on six groups of rotor cores, six groups of long magnetic tiles and twelve groups of short magnetic tiles outside;When six groups of rotor cores, six groups of long magnetic tiles and twelve groups of short magnetic tiles are assembled, by the shell being sleeved on six groups of rotor cores, six groups of long magnetic tiles and twelve groups of short magnetic tiles outside, so that the shell is fixed, ensure that long magnetic tile and short magnetic tile do not separate due to centrifugal force when rotor rotates, rotor core cannot separate, improve structural stability.

[0007] Preferably, the long and short magnetic tiles adopt a tangential magnetic tile structure; by adopting a tangential magnetic tile structure, a higher magnetic field strength can be generated in a smaller space, which allows the motor to generate greater output power in the same volume, thereby improving the performance and reliability of the motor.

[0008] Preferably, the housing is integrally molded by injection molding; this improves the ease of processing and molding the housing, and also improves the ease of processing the housing to fit over the six sets of rotor cores, six sets of long magnetic tiles, and twelve sets of short magnetic tiles.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: by connecting the magnetic circuits of six sets of long magnetic tiles and twelve sets of short magnetic tiles in series, the magnetic circuit structure is optimized, which greatly increases the magnetic load, greatly increases the torque density, reduces the failure of motor windings due to high temperature, and improves the reliability and service life of the motor. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the isometric partial explosion structure of the connection between the shell and the rotor core, etc.

[0012] Figure 3 This is an isometric exploded view of the connection between the stator frame and the stator core, etc.

[0013] Figure 4 This is an isometric structural diagram showing the connection between the stator frame and the stator core.

[0014] The following are labels in the attached diagram: 1. Stator frame; 2. Stator core; 3. Housing; 4. Rotor core; 5. Long magnet; 6. Short magnet. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0016] Example 1

[0017] like Figures 1 to 4As shown, the present invention discloses a motor rotor structure, including a stator frame 1 and a stator core 2, the stator core 2 being mounted on the outer wall of the stator frame 1; it also includes six sets of rotor cores 4, six sets of long magnetic tiles 5, and twelve sets of short magnetic tiles 6, with one set of long magnetic tiles 5 respectively arranged between the six sets of rotor cores 4, the six sets of rotor cores 4 and the six sets of long magnetic tiles 5 forming an integral circular shape, wherein each set of rotor cores 4 is provided with two sets of grooves, and the twelve sets of short magnetic tiles 6 are respectively embedded in the grooves of the rotor cores 4, the rotor cores 4, the long magnetic tiles 5 and the short magnetic tiles 6 being located in the middle of the stator core 2;

[0018] like Figure 2 As shown, it also includes a housing 3, which is fitted onto the outside of six sets of rotor cores 4, six sets of long magnetic tiles 5, and twelve sets of short magnetic tiles 6;

[0019] In this embodiment, by connecting the magnetic circuits of six sets of long magnetic tiles 5 and twelve sets of short magnetic tiles 6 in series, the magnetic circuit structure is optimized, which greatly increases the magnetic load, greatly increases the torque density, reduces the failure of motor windings due to high temperature, and improves the reliability and service life of the motor.

[0020] Example 2

[0021] Based on Example 1, such as Figure 2 As shown, in a motor rotor structure of this utility model, the long magnetic tile 5 and the short magnetic tile 6 adopt a tangential magnetic tile structure;

[0022] like Figure 2 As shown, the housing 3 is integrally molded by injection molding;

[0023] In this embodiment, after the six sets of rotor cores 4, six sets of long magnetic tiles 5, and twelve sets of short magnetic tiles 6 are assembled, the housing 3 is fitted over the six sets of rotor cores 4, six sets of long magnetic tiles 5, and twelve sets of short magnetic tiles 6 to fix them in place. This ensures that when the rotor rotates, the long magnetic tiles 5 and short magnetic tiles 6 will not detach due to centrifugal force, and the rotor cores 4 will not separate, thus improving structural stability. By adopting a tangential magnetic tile structure, a higher magnetic field strength can be generated in a smaller space, which allows the motor to generate greater output power within the same volume, improving the performance and reliability of the motor.

[0024] The present invention relates to a motor rotor structure. When the six sets of rotor cores 4, the six sets of long magnetic tiles 5, and the twelve sets of short magnetic tiles 6 are assembled, the housing 3 is fitted onto the outside of the six sets of rotor cores 4, the six sets of long magnetic tiles 5, and the twelve sets of short magnetic tiles 6, thereby fixing them. Then, the magnetic circuits of the six sets of long magnetic tiles 5 and the twelve sets of short magnetic tiles 6 are connected in series.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A motor rotor structure, comprising a stator frame (1) and a stator core (2), wherein the stator core (2) is mounted on the outer wall of the stator frame (1); characterized in that, It also includes six sets of rotor cores (4), six sets of long magnetic tiles (5) and twelve sets of short magnetic tiles (6). Each of the six sets of rotor cores (4) is provided with a set of long magnetic tiles (5). The six sets of rotor cores (4) and the six sets of long magnetic tiles (5) form an integral circular shape. Each set of rotor cores (4) is provided with two sets of grooves. The twelve sets of short magnetic tiles (6) are respectively embedded in the grooves of the rotor cores (4). The rotor cores (4), long magnetic tiles (5) and short magnetic tiles (6) are located in the middle of the stator core (2).

2. The motor rotor structure as described in claim 1, characterized in that, It also includes a housing (3), which is fitted onto the outside of six sets of rotor cores (4), six sets of long magnetic tiles (5) and twelve sets of short magnetic tiles (6).

3. The motor rotor structure as described in claim 1, characterized in that, The long magnetic tile (5) and the short magnetic tile (6) adopt a tangential magnetic tile structure.

4. The motor rotor structure as described in claim 2, characterized in that, The shell (3) is integrally molded by injection molding.

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