CN218387005U

CN218387005U - Insulating shock-proof type electric motor rotor of direct current fan

Info

Publication number: CN218387005U
Application number: CN202222607773.9U
Authority: CN
Inventors: 肖朝兵; 刘爱国
Original assignee: Wuxi Lufeng Technology Co ltd
Current assignee: Wuxi Lufeng Technology Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-24
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses an insulating shock-proof type electric motor rotor of direct current fan, including interior iron core, outer iron core, shock-absorbing support disk, the center end of interior iron core runs through and is equipped with the rotor shaft installation cavity, the port department of rotor shaft installation cavity is fixed with shock-absorbing support ring, the lateral surface equidistance of interior iron core is equipped with protruding piece, be formed with the quadrant groove between the protruding piece, under the cooperation through arc insulating cushion and arc support concave surface, play buffering shock attenuation and magnetic insulation's between interior iron core and the outer iron core effect to can reduce the noise problem that resonance produced, install the inside back in the magnet steel mounting groove at the magnet steel body, pass through the setting of ware magnet steel mounting groove internal shock attenuation insulating spacer, can effectively reduce the resonance phenomenon of magnet steel body and magnet steel mounting groove and take place, and through the setting between the arc top compact piece embedding magnet steel body, can effectively improve the firm stability of magnet steel body in the magnet steel mounting groove.

Description

Insulating shock-proof type electric motor rotor of direct current fan

Technical Field

The utility model belongs to the technical field of electric motor rotor, concretely relates to insulating shock-proof type electric motor rotor of direct current fan.

Background

The rotor is an integral iron core, an induced current loop is formed by the motor under the control of 16-22KHz high-frequency PWM (pulse width modulation), the stator iron core, the rotor iron core, the rotating shaft, the bearing and the end cover and then the stator iron core, and grease in the bearing is discharged by the induced current, so that ball raceways and balls on inner and outer wheels of the bearing are subjected to electric corrosion, the bearing generates bearing noise, and the service life of the motor is influenced.

Therefore, a brushless DC motor insulation vibration reduction permanent magnet rotor with the publication number of "CN201520408610.5" relates to the technical field of brushless DC motor modification, and is characterized in that: the steel plate punching die comprises an outer iron core, an inner iron core is connected in the outer iron core, a connecting component formed by combining magnetic steel and a rubber pad is arranged between the outer iron core and the inner iron core, the rubber pad is connected with the inner iron core, the magnetic steel is connected with the outer iron core, a protrusion is arranged on the inner iron core, a positioning hole is formed in the protrusion, a boss is arranged on the outer iron core, a small punching sheet and a large punching sheet are arranged in the outer iron core, and the two sides of the magnetic steel are circular-arc edges.

For the insulating damping permanent magnet rotor of the direct current brushless motor, although the distribution precision of the magnetic steel on the circumference of the outer diameter of the rotor is improved, and the noise of the motor is improved, the insulating damping permanent magnet rotor still has the following obvious defects in the use process: but the rubber pad that sets up in above-mentioned rotor durability is lower, can make its rubber pad's characteristic reduce when the live time is too long to still can produce resonance and noise, and then can't reach anticipated result of use, and the connection of the interior iron core of above-mentioned rotor and outer iron core is placed and is just gone on through protruding piece and combine together, thereby the phenomenon that resonance rocked appears in that the rotor operating duration is long, and then can produce serious friction and lead to life's reduction between rotor and the stator.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an insulating shock-proof type electric motor rotor of direct current fan to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an insulating shock-proof type electric motor rotor of direct current fan, includes interior iron core, outer iron core, shock attenuation supporting disk, the center end of interior iron core runs through and is equipped with the rotor shaft installation cavity, the port department of rotor shaft installation cavity is fixed with shock attenuation support ring, the lateral surface equidistance of interior iron core is equipped with protruding piece, be formed with fan-shaped groove between the protruding piece, the terminal surface of protruding piece is equipped with the arc and supports the concave surface, and all runs through on the protruding piece and be equipped with the location air vent, the equidistance is equipped with the fan-shaped location arch with fan-shaped groove looks adaptation on the inner circle wall of outer iron core, and is equipped with the insulating cushion of arc between the fan-shaped location arch, the surface equidistance of outer iron core is equipped with the magnet steel mounting groove, the inside bottom of magnet steel mounting groove is equipped with shock attenuation insulating shim, and the inside of magnet steel mounting groove all installs the magnet steel body, the equidistance is fixed with the support snubber block on the inner circle wall of shock attenuation supporting disk, the surface of shock attenuation supporting disk is equipped with insulating ring spare.

The bellied medial extremity of fan-shaped location is equipped with the arc contact surface, the inside bottom in sector groove is equipped with arc support lug, the fan-shaped location arch that establishes is inboard to outer iron core and the combination of looks adaptation between the sector groove of establishing on the inner iron core, and arc contact surface and the combination of arc support lug looks adaptation, this item is when outer iron core and inner iron core are combined, combine together through combining together between fan-shaped location arch and the sector groove, can make the surface of outer iron core at inner iron core more firmly inseparable location fixed to improve outer iron core and inner iron core and rotate in-process more stable, and the arc contact surface on the fan-shaped location arch and the mutual wainscot of sector inslot arc support lug, can make the inseparabler of laminating after the assembly of interior outer iron core, and make this electric motor rotor and then can not appear the gap when rotating for a long time and lead to the problem of resonance and noise.

The damping support disk is fixed with the outer surface of the damping support ring at equal intervals through the support damping block arranged on the inner side wall, and the insulating damping ring piece arranged on the damping support disk and the side edge of the inner wall of the outer iron core are mutually attached.

The arc-shaped insulating cushion blocks arranged on the inner wall of the outer iron core are connected with the arc-shaped supporting concave surfaces arranged on the top surfaces of the convex blocks arranged on the inner iron core in a veneering combination mode, and the arc-shaped insulating cushion blocks are matched with the arc-shaped supporting concave surfaces to play a role in buffering, damping and magnetic insulation between the inner iron core and the outer iron core and reduce the noise generated by resonance.

Be equipped with between the magnet steel body and stabilize the tight piece in arc top, and the tight piece equidistance in arc top sets up the surface at outer iron core, this item is installed at the inside back of magnet steel mounting groove at magnet steel body, through the setting of ware magnet steel mounting inslot shock attenuation insulating gasket, can effectively reduce the resonance phenomenon of magnet steel body and magnet steel mounting groove and take place, and through the setting between the tight piece embedding magnet steel body in arc top, can effectively improve the magnet steel body and firmly stabilize in the magnet steel mounting groove, thereby resonance can not appear and rock and produce the problem that serious friction damaged with the customization inner wall.

The magnetic steel body is assembled inside the magnetic steel mounting groove in a clamping and fixing mode and combined with the damping insulating gaskets in a face-to-face mode, and the Venus performance of the installed magnetic steel body can be improved.

The utility model discloses a technological effect and advantage: this insulating shock-proof type electric motor rotor of direct current fan, when outer iron core and interior iron core are combined, combine together through between fan-shaped location arch and the fan-shaped groove, can make the outer iron core more firm inseparable location fix the surface at interior iron core, thereby improve outer iron core and interior iron core and rotate the in-process more stable, and the arc contact surface on the fan-shaped location arch and the mutual wainscot of fan-shaped inslot arc support lug, can make laminating inseparabler more after the assembly of interior and exterior iron core, and make this electric motor rotor when long-term the rotation and then can not appear the problem that the gap leads to resonance and noise, pass through the support of insulating shock attenuation ring spare and outer iron core inner ring wall at the shock attenuation supporting disk, can make the effect that the shock attenuation ring spare played the shock attenuation support to outer iron core, avoid producing the resonance friction problem between outer iron core and the interior iron core, and can guarantee that outer iron core can not appear shaking and produce the friction between the stator and damage and reduce life's problem.

Through arc insulation cushion and arc support under the cooperation of concave surface, play buffering shock attenuation and magnetic insulation's between internal iron core and the outer iron core effect, and can reduce the noise problem that resonance produced, install at the inside back of magnet steel mounting groove at magnet steel body, through the setting of shock attenuation insulation cushion in the ware magnet steel mounting groove, can effectively reduce the resonance phenomenon of magnet steel body and magnet steel mounting groove and take place, and through the setting between the tight piece embedding magnet steel body of arc top, can effectively improve the magnet steel body and firmly stabilize in the magnet steel mounting groove, thereby resonance can not appear and rock and produce the problem that serious friction damaged with the customization inner wall.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a front external view of the present invention;

FIG. 3 is a front view of the outer core of the present invention;

fig. 4 is a front view of the inner core of the present invention.

In the figure: 1. an inner core; 2. an outer core; 3. a shock-absorbing support ring; 4. a convex block; 5. a sector groove; 6. an arc-shaped support concave surface; 7. positioning the vent hole; 8. a sector positioning bulge; 9. an arc-shaped insulating cushion block; 10. a magnetic steel mounting groove; 11. a shock-absorbing insulating spacer; 12. a magnetic steel body; 13. a shock-absorbing support plate; 14. supporting the shock-absorbing block; 15. an insulating damping ring; 16. an arc-shaped contact surface; 17. an arc-shaped supporting bump; 18. an arc-shaped jacking block; 19. the rotor shaft is provided with a cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides an insulating shock-proof type electric motor rotor of direct current fan, including interior iron core 1, outer iron core 2, shock-absorbing support disk 13, the center end of interior iron core 1 runs through and is equipped with rotor shaft installation cavity 19, can make the rotor pass through rotor shaft installation cavity 19 installation fixed, the port department of rotor shaft installation cavity 19 is fixed with shock-absorbing support ring 3, play the shock attenuation supporting role to supporting snubber block 14 and shock-absorbing support disk 13, the lateral surface equidistance of interior iron core 1 is equipped with protruding piece 4, and be formed with sector groove 5 between the protruding piece 4, can make the protruding 8 combinations of sector positioning as an organic whole with it, the inside bottom of sector groove 5 is equipped with arc support lug 17, improve the laminating degree between interior iron core 1 and the outer iron core 2.

The terminal surface of protruding piece 4 is equipped with the arc and supports concave surface 6, can make the laminating of arc insulation cushion 9 with it carry out the effect that the shock attenuation was supported, and all run through on the protruding piece 4 and be equipped with location air vent 7, the circulation that can make formation air in the rotor comes to carry out radiating effect to it, the equidistance is equipped with the fan-shaped location arch 8 with 5 looks adaptations of fan-shaped groove on the inner circle wall of outer iron core 2, it improves the steadiness to play the effect of 2 location of outer iron core, the medial extremity of fan-shaped location arch 8 is equipped with arc contact surface 16, it reduces resonance to improve the contact density between the iron core.

The inner side of the outer iron core 2 is provided with a fan-shaped positioning bulge 8 and a fan-shaped groove 5 formed in the inner iron core 1, and an arc-shaped insulating cushion block 9 is arranged between the fan-shaped positioning bulge 8 to play a role in insulating and damping support of the outer iron core 2, the arc-shaped insulating cushion block 9 arranged on the inner wall of the outer iron core 2 and the arc-shaped supporting concave surface 6 on the top surface of the bulge block 4 arranged on the inner iron core 1 are in veneering combination connection with each other, the outer surface of the outer iron core 2 is equidistantly provided with a magnetic steel mounting groove 10, positioning and installation of the magnetic steel body 12 can be realized, the magnetic steel body 12 is assembled in the magnetic steel mounting groove 10 in a clamping and fixing mode, and is in veneering combination with the damping and insulating cushion 11.

The inside bottom of magnet steel mounting groove 10 is equipped with shock attenuation insulating washer 11, can effectively reduce the resonance noise between magnet steel body 12 and the outer iron core 2, magnet steel body 12 is all installed to the inside of magnet steel mounting groove 10, and be equipped with between the magnet steel body 12 and stabilize arc puller block 18, play the stable support to magnet steel body 12, arc puller block 18 equidistance sets up the surface at outer iron core 2, equidistance is fixed with support snubber block 14 on the inner circle wall of shock attenuation supporting disk 13, shock attenuation supporting disk 13 is fixed with the surface equidistance of shock attenuation supporting disk 3 through the support snubber block 14 that establishes on the inside wall, the surface of shock attenuation supporting disk 13 is equipped with insulating shock attenuation ring member 15, the insulating shock attenuation ring member 15 that establishes on the shock attenuation supporting disk 13 and the design of outer iron core 2 inner wall avris mutual veneer.

Specifically, when the outer iron core 2 is combined with the inner iron core 1 during use, the outer iron core 2 can be more firmly and tightly positioned and fixed on the outer surface of the inner iron core 1 through the combination of the fan-shaped positioning protrusion 8 and the fan-shaped groove 5, so that the outer iron core 2 and the inner iron core 1 are more stable in the rotating process, the arc contact surface 16 on the fan-shaped positioning protrusion 8 and the arc support lug 17 in the fan-shaped groove 5 are mutually attached, the inner iron core 2 can be more tightly attached after being assembled, the motor rotor can further avoid the problem of resonance and noise caused by gaps during long-term rotation, the damping support plate 13 can be supported by the insulating damping ring piece 15 and the inner ring wall of the outer iron core 2, the insulating damping ring piece 15 can play a role in damping support of the outer iron core 2, the problem of resonance friction and damage caused by vibration between the outer iron core 2 and the inner iron core 1 can be avoided, and the problem of service life reduction caused by the occurrence of the friction and damage between the outer iron core 2 and the stator can be ensured.

Through arc insulation cushion 9 and arc support under the cooperation of concave 6, play buffering shock attenuation and magnetic insulation's between internal iron core 1 and the outer iron core 2 effect, and can reduce the noise problem that resonance produced, install at magnet steel body 12 inside back, through the setting of magnet steel mounting groove 10 internal damping insulation gasket 11, can effectively reduce the resonance phenomenon of magnet steel body 12 and magnet steel mounting groove 10 and take place, and through the setting between 18 embedding magnet steel body 12 of arc top compact, can effectively improve magnet steel body 12 and firmly stable in magnet steel mounting groove 10, thereby resonance can not appear and rock and produce the problem of serious friction damage with the customization inner wall.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an insulating shock-proof type electric motor rotor of direct current fan, includes interior iron core (1), outer iron core (2), shock attenuation supporting disk (13), its characterized in that: the utility model discloses a damping support structure, including interior iron core (1), the port department of rotor shaft installation cavity (19) is fixed with shock-absorbing support ring (3), the lateral surface equidistance of interior iron core (1) is equipped with protruding piece (4), be formed with fan-shaped groove (5) between protruding piece (4), the terminal surface of protruding piece (4) is equipped with arc support concave surface (6), and all runs through on protruding piece (4) and be equipped with location air vent (7), the equidistance is equipped with fan-shaped location arch (8) with fan-shaped groove (5) looks adaptation on the inner circle wall of outer iron core (2), and is equipped with arc insulation cushion (9) between fan-shaped location arch (8), the surface equidistance of outer iron core (2) is equipped with magnet steel mounting groove (10), the inside bottom of magnet steel mounting groove (10) is equipped with damping insulating gasket (11), and the inside of magnet steel mounting groove (10) all installs magnet steel body (12), the equidistance is fixed with support snubber support cushion block (14) on the inner circle wall of snubber support disc (13), the surface of snubber support disc (13) is equipped with damping support ring spare (15).

2. The direct current fan insulation damping type motor rotor according to claim 1, is characterized in that: the inboard end of fan-shaped location arch (8) is equipped with arc contact surface (16), the inside bottom of fan-shaped groove (5) is equipped with arc supporting convex block (17), the fan-shaped location arch (8) that establish of outer iron core (2) inboard is gone up between fan-shaped groove (5) of establishing and is made up mutually the adaptation, and arc contact surface (16) and arc supporting convex block (17) looks adaptation combination.

3. The direct current fan insulation damping type motor rotor according to claim 1, is characterized in that: the shock absorption support disc (13) is fixed with the outer surface of the shock absorption support ring (3) at equal intervals through a support shock absorption block (14) arranged on the inner side wall, and an insulation shock absorption ring piece (15) arranged on the shock absorption support disc (13) is in mutual face-to-face design with the side of the inner wall of the outer iron core (2).

4. The direct current fan insulation damping type motor rotor according to claim 1, is characterized in that: the arc-shaped insulating cushion blocks (9) arranged on the inner wall of the outer iron core (2) are connected with the arc-shaped supporting concave surfaces (6) on the top surfaces of the convex blocks (4) arranged on the inner iron core (1) in a mutual veneering combination mode.

5. The direct current fan insulation damping type motor rotor according to claim 1, characterized in that: arc-shaped jacking blocks (18) are arranged between the magnetic steel bodies (12), and the arc-shaped jacking blocks (18) are equidistantly arranged on the outer surface of the outer iron core (2).

6. The direct current fan insulation damping type motor rotor according to claim 1, characterized in that: the magnetic steel body (12) is assembled inside the magnetic steel mounting groove (10) in a clamping and fixing mode and is combined with the damping insulating gasket (11) in a facing mode.