Fan iron core structure

Abstract

The utility model relates to the technical field of fans, and discloses a fan iron core structure, which comprises a stator iron core, the stator iron core is formed by mutually riveting a plurality of groups of laminated chips through anchor points, the center of each chip is provided with a rotor mounting hole, and the end face of each chip is provided with a plurality of groups of slots surrounding the rotor mounting hole. The positioning groove holes are formed in the edge of the chip, the number of the positioning groove holes is the same as that of the open grooves, and the multiple sets of positioning groove holes are annularly distributed at equal intervals with the center point of the rotor mounting hole as the axis. Wherein the positioning groove hole is in a circular arc shape, and the shortest distance from the positioning groove hole to the open groove is larger than the shortest distance from the open groove to the edge of the chip. And the anchor point is not arranged on a magnetic circuit of the chip. Bosses are not arranged on the two sides of the positioning slotted hole of the iron core, so that the cost is reduced; and the distance from the positioning slotted hole to the open slot is greater than that of the outer magnetic circuit, and the magnetic circuit is not provided with an anchor point, so that the magnetic circuit is widened, and the power of the fan is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a core structure of a fan applied in a dust collection device. Background Art

[0002] A fan is provided inside a vacuum cleaner. The fan uses a high-speed brushless motor as a drive to drive a dynamic impeller to rotate to generate suction.

[0003] A stator core is provided inside the fan. The stator core is formed by stacking and riveting multiple groups of chips. Positioning slot holes are provided around the core. In order not to affect the magnetic circuit, the existing core is provided with outwardly extending bosses on both sides of the positioning slot holes around the circumference, but this will increase the cost. Some of the slots on the end face of the core are double slots, which will narrow the width of the magnetic circuit. When the magnetic circuit is narrow, the characteristics will become soft. The existing core will set the anchor points on the magnetic circuit, which will affect the magnetic circuit characteristics. Summary of the Utility Model

[0004] Based on this, in view of the problems of high production cost, narrow magnetic circuit and soft characteristics of the stator core of the existing fan, it is necessary to provide a core structure of a fan.

[0005] To achieve the above object, the utility model provides the following technical solution: A core structure of a fan, including a stator core, the stator core is formed by stacking multiple groups of chips and then riveting each other through anchor points, a rotor mounting hole is opened in the center of the chip, and multiple groups of slots surrounding the rotor mounting hole are opened on the end face of the chip.

[0006] Positioning slot holes, the positioning slot holes are opened at the edge of the chip, and the number is the same as that of the slots. Multiple groups of the positioning slot holes are annularly and equidistantly distributed around the center point of the rotor mounting hole. No bosses are provided on both sides of the positioning slot holes to reduce the cost.

[0007] Wherein, the positioning slot hole is arc-shaped, and the closest distance from the positioning slot hole to the slot is greater than the closest distance from the slot to the edge of the chip. The magnetic circuit becomes wider.

[0008] The anchor points are not arranged on the magnetic circuit of the chip. To prevent affecting the magnetic circuit.

[0009] In a preferred example of the utility model, it can be further configured as follows: The positioning slot holes and the slots are respectively provided with three groups, and the connection line from the center of the positioning slot hole to the center of the rotor mounting hole is located in the middle of two adjacent slots, and the anchor points are located on this connection line.

[0010] By adopting the above technical solution, the setting of the anchor points will not affect the magnetic circuit.

[0011] In summary, the utility model includes at least one of the following beneficial technical effects:

[0012] On both sides of the positioning slot hole of the iron core, no bosses are provided, reducing the cost; and the distance from the positioning slot hole to the slot is greater than the distance of the outer magnetic circuit, and no anchor points are provided on the magnetic circuit, broadening the magnetic circuit and improving the power of the fan. Description of the Drawings

[0013] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0014] Figure 1 is a schematic structural diagram of the present invention;

[0015] Figure 2 is a top view of the present invention.

[0016] In the drawings:

[0017] 1. Chip; 11. Slot; 12. Rotor mounting hole; 13. Positioning slot hole; 14. Anchor point; 2. Stator iron core. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] In Figure 1-2 In the shown embodiment, the present invention provides a technical solution: a fan iron core structure, including a stator iron core 2, which is formed by laminating multiple groups of chips 1 and riveting them to each other through anchor points 14. A rotor mounting hole 12 is provided at the center of the chip 1, and three slots 11 surrounding the rotor mounting hole 12 are provided on the end face of the chip 1.

[0020] In actual application, compared with the existing fan stator iron core, the positioning slot holes 13 are opened at the edge of the chip 1, and the number is the same as that of the slots 11. The three groups of positioning slot holes 13 are annularly and equidistantly distributed around the center point of the rotor mounting hole 12.

[0021] Among them, the positioning slot hole 13 is arc-shaped, and the shortest distance from the positioning slot hole 13 to the slot 11 is greater than the shortest distance from the slot 11 to the edge of the chip 1. The connection line from the positioning slot hole 13 to the center of the rotor mounting hole 12 is in the middle position between two adjacent slots 11, and the anchor point 14 is on this connection line, and the anchor point 14 is not provided on the magnetic circuit of the chip 1.

[0022] The specific working principle of the present utility model will be elaborated in detail below: The magnetic circuit surrounds the slot 11, the anchor point 14 is located between two adjacent magnetic circuits, the shortest distance from the positioning slot hole 13 to the slot 11 is greater than the distance from the slot 11 to the edge of the chip 1, the magnetic circuit is wide, and the efficiency is high.

[0023] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fan core structure, comprising a stator core (2), wherein the stator core (2) is formed by stacking a plurality of cores (1) and riveting them together through anchor points (14), a rotor mounting hole (12) is provided at the center of the core (1), and a plurality of slots (11) surrounding the rotor mounting hole (12) are provided on the end surface of the core (1), wherein: Positioning slots (13), the positioning slots (13) are provided at the edge of the chip (1), the number of the positioning slots (13) is the same as the number of the slots (11), and a plurality of groups of the positioning slots (13) are equidistantly distributed in a ring shape with the center point of the rotor mounting hole (12) as the axis; The positioning slot (13) is in an arc shape, and the shortest distance between the positioning slot (13) and the slot (11) is greater than the shortest distance between the slot (11) and the edge of the chip (1); The anchor point (14) is not arranged on the magnetic path of the chip (1).

2. A fan core structure according to claim 1, characterized in that: The positioning slots (13) and the slots (11) are respectively provided in three groups, and a line connecting the positioning slots (13) to the center of the rotor mounting hole (12) is located in the middle of two adjacent slots (11), and the anchor point (14) is located on the line.

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