CN212985577U - Balance optimizing structure of fan motor - Google Patents

Abstract

The utility model discloses a balanced structure of optimizing of fan motor, including bottom plate, flabellum, well pipe, bearing, stator and rotor magnet, well pipe fixed mounting is on the bottom plate, and the bearing is fixed to be inserted and locates in the well pipe, and the main shaft axial locking and the circumferencial direction of flabellum can the pivoted insert locate in the bearing, and well pipe circumference outside is located to the fixed cover of stator, is equipped with on the stator along its radially extending's magnetic conduction piece, and rotor magnet fixed mounting is on flabellum circumference inside wall, and stator magnetic conduction piece circumference outside is located just right with it just to rotor magnet is just overlapped, the utility model discloses a optimize balanced fan noise quality and efficiency to the best ratio of magnetic conduction piece external diameter and rotor magnet internal diameter, be favorable to improving the whole.

Description

Balance optimizing structure of fan motor

Technical Field

The utility model relates to a radiator fan, in particular to balanced structure of optimizing of fan motor.

Background

With the trend of light and thin electronic products and high performance, users have higher and higher requirements on the notebook computer, and the fan in the notebook computer is the same, the diameter and the blade height of the originally designed fan stator magnetic conductive sheet are not designed in a system optimization manner, so that unnecessary space waste and efficiency loss are caused, the thickness of the fan is difficult to reduce, and the design requirements of thinness and high performance are difficult to meet.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a balanced structure of optimizing of fan motor, this balanced structure of optimizing of fan motor can effectively optimize balanced fan, noise reduction and promotion efficiency.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides a balanced optimized structure of fan motor, includes bottom plate, flabellum, well pipe, bearing, stator and rotor magnet, well pipe fixed mounting is on the bottom plate, and the bearing is fixed to be inserted and is located in the well pipe, and the main shaft axial locking of flabellum and circumferencial direction can the pivoted insert and be provided with the cavity that is used for holding rotor magnet in locating the bearing on the flabellum, and rotor magnet axial height is the same with cavity axial height, and the fixed cover of stator is located well outside pipe circumference, is equipped with on the stator along its radial extension's magnetic conduction piece, and rotor magnet just overlaps and locates the stator magnetic conduction piece circumference outside and just right with it, the ratio of the diameter that magnetic conduction piece deviates from the circumference of stator on the stator and the diameter that rotor magnet just right.

As a further improvement, the magnetic conduction piece circumference lateral wall and the rotor magnet are just to the clearance more than or equal to 0.2mm between the circumference inside wall of stator.

As the utility model discloses a further improvement, magnetic conduction piece on the stator includes that annular inner ring portion, a plurality of radial branch cadres that are and lie in the outer portion that expands of branch end portion, the well outside of pipe is located to the fixed cover in inner ring portion, expands the portion outward and keep away from branch portion one side and form and the endocentric arc surface of inner ring portion, and expand portion and rotor magnet just to setting up outward.

As the utility model discloses a further improvement, still be equipped with insulator foot on the stator, insulator foot includes insulating solid fixed ring, the adapter sleeve with press from both sides tight piece, two insulating solid fixed ring coaxial position respectively are in magnetic conduction piece axial both sides, insulating solid fixed ring fixed cladding is in the well pipe circumference outside, the branch portion circumference outside of magnetic conduction piece is located to the cover of adapter sleeve one-to-one, each adapter sleeve one end and two insulating solid fixed ring lateral wall fixed connection, each adapter sleeve other end and the tight piece fixed connection of clamp, be formed with the hole site that communicates with the adapter sleeve inboard on the tight piece bottom surface of clamp, press from both sides tight piece lateral wall and closely press from both sides the surface of expanding outward of locating magnetic conduction piece, magnetic conduction piece expands the portion and exposes.

As a further improvement, the magnetic conduction piece includes magnetic conduction monolithic, insulator and insulating crust, and the parallel interval arrangement of a plurality of magnetic conduction monolithic is kept apart by the insulator insulation between the adjacent magnetic conduction monolithic, and the insulating crust wraps up in the whole outside that a plurality of magnetic conduction monolithic and insulator formed completely.

As a further improvement of the utility model, the insulator is a sheet body matched with the shape of the magnetic conduction single sheet, and the insulator is clamped between the adjacent silicon steel sheets.

The utility model has the advantages that: the utility model discloses a ratio to the magnetic conductive plate external diameter on the fan stator and rotor magnet internal diameter is controlled, controls its within a definite time at 0.89-0.98, and the fan can be when the design, can design flabellum inner rotor magnet internal diameter according to the external diameter of stator magnetic conductive plate, can ensure that the fan obtains minimum response distance satisfying under the production process condition, makes the motor obtain bigger rotational speed, improves the noise quality simultaneously, realizes fan silence effect, the utility model discloses a optimize balanced fan noise quality and efficiency to the magnetic conductive plate external diameter and the best ratio of rotor magnet internal diameter, be favorable to improving the whole quality of fan.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

fig. 2 is a front view of the stator structure of the present invention;

fig. 3 is a sectional view taken along line a-a in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.

Example (b): referring to fig. 1, the present invention provides a fan motor balance optimizing structure, which comprises a bottom plate 1, fan blades 2, a middle tube 3, a bearing 4, a stator 5 and a rotor magnet 6, the middle pipe 3 is fixedly arranged on the bottom plate 1, the bearing 4 is fixedly inserted in the middle pipe 3, the main shaft of the fan blade 2 is axially stopped and can be rotatably inserted in the bearing 4 in the circumferential direction, a cavity for accommodating a rotor magnet is arranged on the fan blade, the axial height of the rotor magnet is the same as that of the cavity, the stator 5 is fixedly sleeved outside the circumference of the middle pipe 3, the stator 5 is provided with a magnetic conductive sheet 7 extending along the radial direction of the stator 5, the rotor magnet 6 is exactly sleeved outside the circumference of the magnetic conductive sheet 7 of the stator 5 and is opposite to the stator, the ratio of the diameter A of the magnetic conductive sheet 7 on the stator 5, which deviates from the circumference of the stator, to the diameter B of the rotor magnet 6, which is opposite to the circumference of the stator, is 0.89-0.98. In short, the ratio of the outer diameter a of the magnetic conductive plate 7 to the inner diameter B of the rotor magnet 6 is 0.89 to 0.98.

The matching relation between the outer diameter A of the magnetic conductive sheet 7 and the inner diameter B of the rotor magnet 6 enables the performance of the fan motor to reach the maximum efficiency, the ratio of the outer diameter A of the magnetic conductive sheet 7 to the inner diameter B of the rotor magnet 6 is set to be 0.89-0.98 aiming at motors with different sizes of fans, and in the ratio range, the minimum induction distance is obtained under the condition of meeting the production process conditions, so that the motor obtains higher rotating speed, and meanwhile, the noise quality of high-speed rotation of the fan motor can be improved.

And a clearance C between the circumferential outer side wall of the magnetic conductive sheet 7 and the circumferential inner side wall of the rotor magnet 6 facing the stator is more than or equal to 0.2 mm. Ensuring smooth realization of the production process and avoiding the interference between the magnetic conductive sheet 7 and the rotor magnet 6.

The magnetic conduction piece 7 on the stator 5 comprises an annular inner ring portion, a plurality of radial branch portions and an outer expansion portion located at the end portion of each branch portion, the inner ring portion is fixedly sleeved on the outer side of the middle pipe 3, one side, far away from the branch portions, of the outer expansion portion forms an arc surface concentric with the inner ring portion, the outer expansion portion is arranged opposite to the rotor magnet 6, and the outer diameter of the magnetic conduction piece 7 on the stator 5 is the diameter of the arc surface of the outer expansion portion on the magnetic conduction piece 7.

Referring to fig. 2, the stator 5 is further provided with an insulating base 8, the insulating base includes insulating fixing rings 9, connecting sleeves 10 and clamping blocks 11, the two insulating fixing rings 9 are respectively coaxially located at two axial sides of the magnetic conductive sheet 7, the insulating fixing rings 9 are fixedly wrapped at the outer side of the circumference of the middle tube 3, the connecting sleeves 10 are correspondingly sleeved at the outer side of the circumference of the branch portion of the magnetic conductive sheet 7 one by one, one end of each connecting sleeve 10 is fixedly connected with the side walls of the two insulating fixing rings 9, the other end of each connecting sleeve 10 is fixedly connected with the clamping block 11, a hole communicated with the inner side of the connecting sleeve 10 is formed on the bottom surface of the clamping block 11, the side walls of the clamping blocks 11 are tightly clamped on the surface of the outward-expanding portion of the magnetic conductive sheet 7. The magnetic conducting sheet 7 is stably fixed on the middle pipe 3 through the coating of the insulating base, meanwhile, the coil is wound in an insulating mode, and the outer side surface of the circumference of the outward expansion part of the magnetic conducting sheet 7 is exposed out of the upper opening of the insulating base and corresponds to the rotor magnet 6.

Referring to fig. 3, the magnetic conductive sheet 7 includes magnetic conductive single sheets 12, insulators 13, and insulating sheaths 14, the magnetic conductive single sheets 12 are arranged in parallel at intervals, adjacent magnetic conductive single sheets 12 are insulated and isolated by the insulators 13, the insulators 13 are sheet bodies having shapes matching with the magnetic conductive single sheets 12, the insulators 13 are sandwiched between adjacent silicon steel sheets, and the insulating sheaths 14 completely cover the entire outer sides formed by the magnetic conductive single sheets 12 and the insulators 13.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (6)

1. The utility model provides a balanced optimized structure of fan motor, includes bottom plate (1), flabellum (2), well pipe (3), bearing (4), stator (5) and rotor magnet (6), well pipe fixed mounting is on the bottom plate, and the bearing is fixed to be inserted and locates in the well pipe, and the main shaft axial locking and the circumferencial direction of flabellum can the pivoted insert locate in the bearing, and well pipe circumference outside is located to the fixed cover of stator, is equipped with on the stator along its radial extension magnetic conduction piece (7), and rotor magnet fixed mounting is on flabellum circumference inside wall, and stator piece magnetic conduction circumference outside is just right with it just to the rotor magnet cover is located, its characterized in that: the ratio of the outer diameter (A) of the magnetic conductive sheet on the stator to the inner diameter (B) of the rotor magnet is 0.89-0.98.

2. The fan motor balance optimizing structure of claim 1, wherein: and a gap (C) between the circumferential outer side wall of the magnetic conductive sheet and the circumferential inner side wall of the rotor magnet is more than or equal to 0.2 mm.

3. The fan motor balance optimizing structure of claim 1, wherein: the magnetic conduction sheet on the stator comprises an annular inner ring portion, a plurality of radial branch portions and an outer expansion portion located at the end portion of each branch, the inner ring portion is fixedly sleeved on the outer side of the middle pipe, one side, far away from the branch portion, of the outer expansion portion forms an arc surface concentric with the inner ring portion, and the outer expansion portion is opposite to the rotor magnet.

4. The fan motor balance optimizing structure of claim 3, wherein: the stator is further provided with an insulating base (8), the insulating base comprises insulating fixing rings (9), a connecting sleeve (10) and U-shaped clamping blocks (11), the two insulating fixing rings are coaxially located on two axial sides of the magnetic conducting sheet respectively, the insulating fixing rings are fixedly coated on the outer side of the circumference of the middle pipe, the connecting sleeve is sleeved on the outer side of the circumference of the branch portion of the magnetic conducting sheet in a one-to-one correspondence mode, one end of each connecting sleeve is fixedly connected with the side walls of the two insulating fixing rings, the other end of each connecting sleeve is fixedly connected with the U-shaped clamping blocks, hole positions communicated with the inner side of the connecting sleeve are formed in the bottom surfaces of the U-shaped clamping blocks, the side walls of the U-shaped clamping blocks are tightly clamped on the surfaces of.

5. The fan motor balance optimizing structure of claim 1 or 4, wherein: the magnetic conducting sheet comprises magnetic conducting single sheets (12), an insulator (13) and an insulating sheath (14), wherein the magnetic conducting single sheets are arranged in parallel at intervals, adjacent magnetic conducting single sheets are insulated and isolated by the insulator, and the insulating sheath completely covers the outer side of the whole body formed by the magnetic conducting single sheets and the insulator.

6. The fan motor balance optimizing structure of claim 5, wherein: the insulator is a sheet body matched with the magnetic conduction single sheet in shape, and the insulator is clamped between the adjacent silicon steel sheets.

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