Stator structure for improving power of brushless motor

Abstract

The utility model relates to the technical field of stator structures, in particular to a stator structure for improving the power of a brushless motor, which is characterized in that a coil is a self-adhesive coil, so that the maximum slot space factor is ensured, and the maximum power density of the motor is ensured in structural design and process; comprising a stator core and a plurality of groups of self-adhesive coils, and the plurality of groups of self-adhesive coils are arranged on the stator core; the motor further comprises a positioning assembly, a framework and an inner gear ring, the framework is arranged on the outer side wall of the stator core, and the inner gear ring is installed in the stator core through the positioning assembly.

Description

TECHNICAL FIELD

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

[0002] In the technical field of brushless motor, the optimization of stator structure is crucial for improving the power density and efficiency of motor.

[0003] The brushless motor is composed of a stator and a rotor, the stator part is composed of a winding, an iron core and a framework injected on the iron core, the winding is usually a round copper wire, the most critical two points affecting the power density of the brushless motor are one point of magnetic load, i.e. the size of air gap flux density, and the other point of electric load, i.e. the size of winding flux, which is reflected on the stator winding, i.e. the size of slot fill rate, increasing the slot fill rate of the stator can significantly improve the power density of the motor, and the brushless motor with high power density has higher power under the same volume comparison. CONTENT OF THE UTILITY MODEL

[0004] To solve the above technical problems, the utility model provides a stator structure of improving brushless motor power, since the coil is a self-adhesive coil, the maximum slot fill rate is ensured, so that the maximum power density of the motor is ensured in the structural design and process.

[0005] The utility model discloses a stator structure of improving brushless motor power, including stator core and multiple self-adhesive coils, multiple self-adhesive coils all are arranged on the stator core, still including positioning assembly, framework and inner tooth ring, the framework is set up on the stator core outside wall, and the inner tooth ring is installed in the stator core inside through the positioning assembly, the framework is formed on the stator core outside wall, and multiple self-adhesive coils are wound on the stator core and heated and naturally formed, then the inner tooth ring is pressed into the stator core inside and is connected and fixed through the positioning assembly, so that the stator structure is formed, since the coil is a self-adhesive coil, the maximum slot fill rate is ensured, so that the maximum power density of the motor is ensured in the structural design and process.

[0006] Preferably, the positioning assembly includes multiple installation grooves and multiple positioning pins, the multiple installation grooves are arranged on the stator core outside wall, the inner tooth ring is provided with grooves matched with the multiple installation grooves, and the multiple positioning pins are respectively inserted into the multiple installation grooves and the multiple grooves on the inner tooth ring, when the inner tooth ring is pressed into the stator core inside, the multiple positioning pins are inserted into the multiple installation grooves and the grooves, so that the stator core and the inner tooth ring are fixed, the assembly convenience of the stator structure is improved, and the structural stability is improved.

[0007] Preferably, the multiple self-adhesive coils are tangentially arranged on the framework, the space utilization is improved, and the slot fill rate is improved.

[0008] Preferably, the framework is injection molded on the outer wall of the stator core in a form of overmolding; the convenience of processing and forming of the framework is improved, and the structural stability between the stator core and the framework is improved.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the framework is processed and formed on the outer wall of the stator core, a plurality of self-adhesive coils are wound on the stator core, and then are heated and naturally formed, then the inner tooth ring is pressed into the inside of the stator core and is connected and fixed through the positioning assembly, so that the stator structure is processed and formed, and since the coil is a self-adhesive coil, the maximum slot fill rate is ensured, so that the maximum power density of the motor is ensured in the structural design and process. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is the axonometric structure schematic diagram of the utility model;

[0011] Figure 2 is the explosion structure schematic diagram of the connection between the stator core and the mounting groove;

[0012] Figure 3 is the explosion structure schematic diagram of the connection between the mounting groove and the positioning pin;

[0013] Figure 4 is the axonometric structure schematic diagram of the inner tooth ring;

[0014] Figure 5 is the axonometric structure schematic diagram of the stator core.

[0015] Markings in the drawings: 1, stator core; 2, self-adhesive coil; 3, framework; 4, inner tooth ring; 5, mounting groove; 6, positioning pin. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0017] Embodiment 1

[0018] As Figures 1 to 5 shown, the utility model discloses a stator structure for improving the power of a brushless motor, including stator core 1 and a plurality of self-adhesive coils 2, a plurality of self-adhesive coils 2 are all set on stator core 1;Still include positioning assembly, framework 3 and inner tooth ring 4, framework 3 is set on the outer wall of stator core 1, and inner tooth ring 4 is installed in the inside of stator core 1 through the positioning assembly;

[0019] As Figure 3As shown, the positioning assembly comprises a plurality of sets of mounting grooves 5 and a plurality of sets of positioning pins 6, the plurality of sets of mounting grooves 5 are arranged on the outer side wall of the stator core 1, the inner tooth ring 4 is provided with grooves matched with the plurality of sets of mounting grooves 5, and the plurality of sets of positioning pins 6 are respectively inserted into the plurality of sets of mounting grooves 5 and the plurality of sets of grooves on the inner tooth ring 4;

[0020] In the embodiment, the framework 3 is formed on the outer side wall of the stator core 1, the plurality of sets of self-adhesive coils 2 are wound on the stator core 1 and then heated to be naturally formed, then the inner tooth ring 4 is pressed into the stator core 1 and connected and fixed through the positioning assembly, so that the stator structure is formed, and since the coils are self-adhesive coils 2, the maximum slot fill rate is ensured, so that the maximum power density of the motor is ensured in the structural design and process.

[0021] Embodiment 2

[0022] Based on the embodiment 1, as shown in the figure, Figure 1 The plurality of sets of self-adhesive coils 2 are tangentially arranged on the framework 3.

[0023] As shown in the figure, Figure 3 The framework 3 is injection molded on the outer side wall of the stator core 1 in a plastic wrapping manner.

[0024] In the embodiment, when the inner tooth ring 4 is pressed into the stator core 1, the plurality of sets of positioning pins 6 are inserted into the plurality of sets of mounting grooves 5 and grooves, so that the stator core 1 and the inner tooth ring 4 are fixed, the assembly convenience of the stator structure is improved, the structural stability is improved, the space utilization is improved, and the slot fill rate is improved.

[0025] The stator structure for improving the power of the brushless motor is formed by the following steps: the framework 3 is formed on the outer side wall of the stator core 1, the plurality of sets of self-adhesive coils 2 are wound on the stator core 1 and then heated to be naturally formed, then the inner tooth ring 4 is pressed into the stator core 1 and connected and fixed through the positioning assembly, so that the stator structure is formed.

[0026] The above only describes the preferred embodiments of the utility model, and it should be noted that, for ordinary skilled persons in the technical field, without departing from the technical principles of the utility model, a plurality of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the utility model.

Claims

1. A stator structure for improving power of a brushless motor, comprising a stator core (1) and a plurality of self-adhesive coils (2), the plurality of self-adhesive coils (2) are arranged on the stator core (1); characterized in that, It also comprises a positioning assembly, a framework (3) arranged on the outer wall of the stator core (1), and an inner gear ring (4) installed inside the stator core (1) through the positioning assembly.

2. A stator structure for increasing power of a brushless motor as claimed in claim 1, wherein The positioning assembly comprises multiple sets of installation grooves (5) and multiple sets of positioning pins (6), the multiple sets of installation grooves (5) are arranged on the outer wall of the stator core (1), the inner gear ring (4) is provided with grooves matched with the multiple sets of installation grooves (5), and the multiple sets of positioning pins (6) are respectively inserted into the multiple sets of installation grooves (5) and the multiple sets of grooves on the inner gear ring (4).

3. A stator structure for increasing power of a brushless motor as defined in claim 1, wherein The multiple sets of self-adhesive coils (2) are tangentially arranged on the framework (3).

4. A stator structure for increasing power of a brushless motor as defined in claim 1, wherein The framework (3) is injection molded on the outer wall of the stator core (1) in a plastic wrapping manner.

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