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CN-224218260-U - IC assembling structure of portable fan brushless motor

CN224218260UCN 224218260 UCN224218260 UCN 224218260UCN-224218260-U

Abstract

The utility model discloses an IC assembly structure of a portable fan brushless motor, which comprises a PCB and a motor stator fixedly arranged on one side of the PCB, wherein the motor stator comprises a plurality of windings, the windings are uniformly arranged around a central shaft of the motor stator, at least one first yielding gap is arranged at the edge of the PCB, a Hall IC is electrically connected to the PCB, the Hall IC is arranged in an axial projection area of the first yielding gap, a pin of the Hall IC extends towards the middle area of the PCB and is electrically connected with the PCB, and the Hall IC is horizontally laid on one side of the PCB opposite to the motor stator.

Inventors

  • HE SHUNWAN

Assignees

  • 广东一万一电子有限公司

Dates

Publication Date
20260508
Application Date
20250522

Claims (5)

  1. 1. The utility model provides a portable fan brushless motor's IC package assembly, includes PCB board (1) and sets firmly motor stator (2) in PCB board (1) one side, motor stator (2) include a plurality of windings (3), a plurality of winding (3) are arranged around motor stator (2) center pin even, wherein PCB board (1) edge is provided with at least one first breach (5) of stepping down, electric connection is provided with hall IC (4) on PCB board (1), hall IC (4) set up in first breach (5) axial projection area of stepping down, just hall IC (4) pin towards PCB board (1) intermediate zone extend and with PCB board (1) electric connection, hall IC (4) flat layout is arranged in PCB board (1) and is carried away from motor stator (2) place one side.
  2. 2. The IC package assembly of claim 1, wherein said first relief notch (5) is disposed at a midpoint of adjacent two windings of the motor stator (2).
  3. 3. The IC assembly structure of a portable fan brushless motor as set forth in claim 1, wherein the Hall IC (4) is deformed by an external force toward a side of the motor stator (2), and finally passes through the first abdicating notch (5) to be perpendicular to the PCB (1).
  4. 4. The IC assembly structure of a portable fan brushless motor as set forth in claim 1, wherein a second yielding gap (6) is arranged at the edge of the PCB (1), the central axis of the PCB (1) is taken as a symmetry center, and the second yielding gap (6) is arranged at the mirror image area of the first yielding gap (5).
  5. 5. The IC package assembly of claim 1 to 4, wherein the first recess (5) is provided with a plurality of recesses.

Description

IC assembling structure of portable fan brushless motor Technical Field The utility model relates to the technical field of brushless motors, in particular to an IC assembly structure of a portable fan brushless motor. Background The working principle of brushless motors is based on electronic commutation technology. The motor is internally provided with a plurality of windings, and the rotation of the motor is realized by controlling the power-on sequence and time of the windings. A position detector (e.g., hall IC) detects the position of the rotor and communicates a position signal to the IC. The IC generates switching signals based on these signals to control the switching state of the power transistors and thus the operation of the motor. In this way, the brushless motor can achieve efficient and accurate control. The hall ICs are typically placed at the midpoints of adjacent two-phase windings of the stator, matching the rotor pole pitch, separated by 1/2 of the pole pitch. The brushless motor applied to the portable fan at present is generally provided with a Hall IC, two assembly modes of the Hall IC and a PCB are commonly provided, one assembly mode is that a pin through hole is formed in the PCB, pins on the Hall IC penetrate through the pin through hole and are fixed through soldering tin and are electrically communicated, the Hall IC extends towards one side of a stator winding, the sensing distance can be effectively shortened, the sensing sensitivity is enhanced, but the structure is relatively high in standardization and precision requirements, automatic production cannot be realized, the production efficiency is low, the assembled Hall IC can have a skew phenomenon, the appearance attractiveness and regularity of a finished product are seriously influenced, meanwhile, the assembly mode is also subject to magnetic field interference of different degrees, please refer to an attached drawing figure 3 of the specification, and the other assembly mode is that the Hall IC is flatly distributed on one side of the PCB opposite to the stator winding, the assembly mode can realize automatic production and improve the production efficiency, but the sensing sensitivity is weaker due to the fact that the distance between the Hall IC and the stator winding is far away from the stator winding, and the attached drawing figure 4 of the specification is referred to. Disclosure of utility model The utility model aims to provide an IC assembly structure of a portable fan brushless motor, which not only can realize automatic processing and production, but also has the advantages of regular form after assembly and accurate positioning, can effectively ensure the sensitivity of Hall IC sensing, and solves the problems raised by the background technology. In order to achieve the above purpose, the IC assembly structure of the portable fan brushless motor comprises a PCB and a motor stator fixedly arranged on one side of the PCB, wherein the motor stator comprises a plurality of windings, the windings are uniformly arranged around a central shaft of the motor stator, at least one first yielding gap is arranged at the edge of the PCB, a Hall IC is electrically connected to the PCB, the Hall IC is arranged in an axial projection area of the first yielding gap, the Hall IC pins extend towards the middle area of the PCB and are electrically connected with the PCB, and the Hall IC is horizontally arranged on one side of the PCB opposite to the motor stator. Preferably, the first yielding notch is arranged corresponding to the middle point position of the adjacent two-phase windings of the motor stator. Preferably, the pins of the hall IC are deformed under the action of an external force towards one side where the motor stator is located, and finally the hall IC is perpendicular to the PCB board after passing through the first yielding notch. Preferably, a second yielding gap is arranged at the edge of the PCB, the central axis of the PCB is taken as a symmetrical center, and the second yielding gap is arranged at the mirror image area of the first yielding gap. Preferably, the first yielding gap is provided with a plurality of yielding gaps. Compared with the prior art, the utility model has the beneficial effects that: The utility model not only can realize automatic processing and production, but also has the advantages of precise positioning after assembly and can effectively ensure the sensitivity of Hall IC sensing. Drawings FIG. 1 is a schematic diagram of a first embodiment of the present utility model; FIG. 2 is a second schematic diagram of the structure of the present utility model; FIG. 3 is a schematic diagram of a prior art embodiment of the present utility model; fig. 4 is a schematic structural diagram of a second embodiment of the present utility model. In the figure, a plate 1 PCB, a motor stator 2, a winding 3, a Hall IC 4, a first yielding notch 5 and a second yielding notch 6. Detailed Description Th