CN212210623U - Motor of dust collector - Google Patents

Abstract

The utility model discloses a dust collector motor, the stator module of which comprises a stator core formed by splicing at least three stator blocks, an insulating framework and a winding; the end of the insulating framework, which is provided with the terminal, is provided with a first fixing part for fixing the circuit board, and the projections of the first fixing part are all positioned in an area surrounded by the motor shell along the axial direction of the dust collector motor; the fixed impeller of the dust collector motor comprises a guide vane, an outer annular wall connected with the outer end of the guide vane, an inner annular wall connected with the inner end of the guide vane, a central hole and a second fixing part arranged between the inner annular wall and the central hole and used for fixing a motor shell; along the axial direction of the dust collector motor, the projections of the motor shell are all positioned in the area enclosed by the inner ring wall. The utility model provides a dust catcher motor does not have other spare parts except that the stator in the wind channel, has consequently reduced the kinetic energy loss of the air current flow in-process, can improve the efficiency of dust catcher motor and still reduced the production of noise.

Description

Motor of dust collector

Technical Field

The utility model relates to a dust catcher technical field, more specifically says, relates to a dust catcher motor.

Background

In the prior art, a dust collector motor generally adopts an injection molding shell, a front bearing chamber and a stator assembly are both arranged on the shell, a circuit board is fixed on the shell or a rear bracket, the rear bracket is fixed on the shell, and the stator needs laser welding connection in the assembling process, so that an insulating layer on the surface of a silicon steel sheet can be damaged in the welding process, certain iron loss and magnetic loss are caused, the motor efficiency is reduced, and the energy loss is increased; in addition, the circuit board is fixed on the shell or the rear bracket, and a plurality of supporting structures arranged in the air duct can be generated, so that the number of parts in the air duct is increased, the normal flow of air flow in the air duct is influenced, the efficiency of the motor is reduced, and meanwhile, the supporting structures can generate noise in the process that the air flow in the air duct flows through the supporting structures; the circuit board is arranged on the rear support, and the fixing constraint of the rear support is influenced.

In summary, a need exists in the art to provide a vacuum cleaner motor with improved efficiency.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a motor for a vacuum cleaner, which has no other supporting structure or connecting structure except for the guide vane in the air duct, so that the air flow can smoothly flow in the air duct, thereby improving the efficiency of the motor and reducing the noise.

In order to achieve the above object, the present invention provides the following technical solutions:

a cleaner motor, comprising: the motor comprises a motor shell, a stator component, a rotor component, a fixed impeller, a movable impeller, a circuit board, a fan cover and a rear cover; the stator assembly comprises a stator core formed by splicing at least three stator blocks, an insulation framework inserted in the stator core and a winding wound outside the insulation framework; a first fixing part for fixing the circuit board is arranged at one end of the insulating framework, which is provided with the terminal, and the projections of the first fixing part are all positioned in an area surrounded by the motor shell along the axial direction of the dust collector motor;

the fixed impeller comprises a guide vane, an outer ring wall connected with the outer end of the guide vane, an inner ring wall connected with the inner end of the guide vane, a central hole for positioning the rotor assembly and a second fixing part arranged between the inner ring wall and the central hole, wherein the second fixing part is used for fixing the motor shell;

along the axial direction of the dust collector motor, the projections of the motor shell are all positioned in the area enclosed by the inner ring wall.

Preferably, the second fixing portion is first threaded holes uniformly distributed along the circumferential direction of the inner ring wall, and the number of the first threaded holes is at least two.

Preferably, the number of the guide vanes is 13, and the guide vanes are uniformly distributed along the circumferential direction of the outer ring wall.

Preferably, the first fixing part is a boss which protrudes from the upper surface of the insulating framework, a second threaded hole is formed in the boss, and the circuit board is provided with a through hole matched with the second threaded hole.

Preferably, the insulation frame includes an upper frame inserted from an upper portion of the stator block and a lower frame inserted from a lower portion of the stator block, and the boss is disposed on an upper surface of the upper frame.

Preferably, the motor housing is a metal housing.

Preferably, two circumferential sides of any stator block are provided with first grooves or protrusions used for being matched with adjacent stator blocks.

Preferably, the rotor assembly comprises a rotor shaft, a magnet, a bearing, a wave-shaped elastic sheet and a rear support, the bearing is sleeved on the rotor shaft and is in interference fit with the rotor shaft, and the rear support is made of metal.

Preferably, the outer ring wall is provided with three second grooves for positioning the rear bracket, and the second grooves are uniformly distributed along the circumferential direction of the outer ring wall.

Preferably, a stator core in the stator assembly is in interference fit with the motor housing;

or the stator core in the stator component is in clearance fit with the motor shell and is adhered to the motor shell through an adhesive.

The utility model provides a pair of dust catcher motor, include: the motor comprises a motor shell, a stator component, a rotor component, a fixed impeller, a movable impeller, a circuit board, a fan cover and a rear cover; the stator assembly comprises a stator core formed by splicing at least three stator blocks, an insulation framework inserted in the stator core and a winding wound outside the insulation framework; the end of the insulating framework, which is provided with the terminal, is provided with a first fixing part for fixing the circuit board, and the projections of the first fixing part are all positioned in an area surrounded by the motor shell along the axial direction of the dust collector motor; the fixed impeller comprises a guide vane, an outer ring wall connected with the outer end of the guide vane, an inner ring wall connected with the inner end of the guide vane, a central hole for positioning the rotor assembly and a second fixing part arranged between the inner ring wall and the central hole, wherein the second fixing part is used for fixing the motor shell; along the axial direction of the dust collector motor, the projections of the motor shell are all positioned in the area enclosed by the inner ring wall.

Compared with the prior art, the circuit board in the dust collector motor provided by the utility model is connected with the insulating framework, and the projection of the first fixing part is positioned in the space enclosed by the motor shell, so the stator component is completely positioned in the motor shell, and the structure that the motor shell extends out to occupy the air duct space does not exist; in addition, the motor is connected with a second fixing part arranged between the inner ring wall and the central hole in the installation process, and the motor shell is completely positioned in a space surrounded by the inner ring wall, so that the arrangement of a supporting structure for connecting the outer ring wall of the fixed impeller and the inner ring wall is reduced, and other parts except guide vanes are not arranged in the air duct, therefore, the air flow can smoothly flow in the air duct, the kinetic energy loss in the air flow flowing process is reduced, and the efficiency of the motor of the dust collector can be improved; in addition, the air flow only contacts with the guide vanes in the air duct in the flowing process, so that the noise is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of an insulating framework inserted in a stator block in the assembly process of a motor of a dust collector provided by the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 after the terminal is mounted thereon;

FIG. 3 is a schematic view of the structure of FIG. 2 after the structure is assembled into a whole;

FIG. 4 is a schematic view of the structure of FIG. 3 mounted to a motor housing;

FIG. 5 is a schematic view of the structure of FIG. 4 with the rotor assembly installed;

FIG. 6 is a schematic structural view of the structure of FIG. 5 with the impeller mounted thereon;

FIG. 7 is a schematic structural view of the structure of FIG. 6 after the movable impeller is installed;

FIG. 8 is a schematic structural view of the structure of FIG. 7 after the wind shield is installed;

FIG. 9 is a schematic diagram of the structure of FIG. 8 after mounting a circuit board thereon;

FIG. 10 is a schematic view of the structure of FIG. 9 with a rear cover installed;

fig. 11 is an exploded view of a stator assembly in a vacuum cleaner motor according to the present invention;

fig. 12 is an exploded view of a rotor assembly in a vacuum cleaner motor according to the present invention;

FIG. 13 is a schematic cross-sectional view of a stator block;

fig. 14 is a schematic structural view of the fixed impeller.

In FIGS. 1-14:

1 is a stator component, 11 is a stator core, 111 is a first groove, 112 is a protrusion, 12 is an insulating framework, 121 is an upper framework, 121a is a boss, 122 is a lower framework, 13 is a winding, 14 is a terminal, 2 is a rotor component, 21 is a rotor shaft, 22 is a magnet, 23 is a bearing, 24 is a wave-shaped elastic sheet, 25 is a rear support, 3 is a motor shell, 4 is a fixed impeller, 41 is a positioning ring, 42 is a second groove, 43 is a second fixing part, 5 is a movable impeller, 6 is a fan cover, 7 is a circuit board, 8 is a rear cover, and d is an offset of the circle center of a tooth shoe relative to the circle center of an iron yoke towards a direction far away from the iron yoke.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

The core of the utility model is to provide a dust catcher motor is connected circuit board and insulating skeleton to set up motor housing in the region that the inner ring wall encloses, consequently there is not other structure except that the stator in the wind channel, can make the smooth and easy flow of air current in the wind channel, improve the efficiency of motor, and can the noise reduction.

Please refer to fig. 1-14.

This concrete embodiment provides a dust catcher motor, includes: the motor comprises a motor shell 3, a stator component 1, a rotor component 2, a fixed impeller 4, a movable impeller 5, a circuit board 7, a fan cover 6 and a rear cover 8; the stator assembly 1 comprises a stator core 11 formed by splicing at least three stator blocks, an insulating framework 12 inserted in the stator core 11 and a winding 13 wound outside the insulating framework 12; one end of the insulating framework 12, which is provided with the terminal 14, is provided with a first fixing part for fixing the circuit board 7, and the projections of the first fixing part are all positioned in the area surrounded by the motor shell 3 along the axial direction of the dust collector motor; the fixed impeller 4 comprises a guide vane, an outer ring wall connected with the outer end of the guide vane, an inner ring wall connected with the inner end of the guide vane, a central hole for positioning the rotor assembly 2 and a second fixing part 43 arranged between the inner ring wall and the central hole, wherein the second fixing part 43 is used for fixing the motor shell 3; along the axial direction of the dust collector motor, the projections of the motor shell 3 are all positioned in the area enclosed by the inner ring wall.

It should be noted that, in the assembly process, the circuit board 7 needs to be connected to the terminal 14, so that the first fixing portion is disposed at the end of the insulating framework 12 where the terminal 14 is disposed, and along the axial direction of the vacuum cleaner motor, the projection of the first fixing portion is located in the area surrounded by the motor housing 3, that is, the first fixing portion does not extend out of the motor housing 3, and does not occupy the air duct space, and the air duct is a space formed between the inner annular wall and the outer annular wall.

The insulating firmware can be integral type structure, also can be split type structure, and specific according to actual conditions confirms, does not do the repeated description here, and is preferred, and insulating skeleton 12 adopts V0 level plastic material, and insulating skeleton 12 and stator piece clearance fit.

Preferably, in order to further improve the magnetic circuit effect of the motor, the center of a circle at the tooth shoe of the stator block may be offset downward relative to the center of a circle of the outer ring of the iron yoke, where the offset is d, and d is an offset of the center of the tooth shoe relative to the center of the iron yoke in a direction away from the iron yoke, and specifically may be 0.2mm to 2 mm.

Compared with the prior art, the circuit board 7 in the motor of the dust collector provided by the embodiment is connected with the insulating framework 12, and the projections of the first fixing parts are all positioned in the space surrounded by the motor shell 3, so that the stator assembly 1 is completely positioned in the motor shell 3, and a structure which extends out of the motor shell 3 and occupies the air duct space does not exist; in addition, the motor is connected with a second fixing part 43 arranged between the inner ring wall and the central hole in the installation process, and the motor shell 3 is completely positioned in the space surrounded by the inner ring wall, so that the arrangement of a supporting structure for connecting the outer ring wall and the inner ring wall of the fixed impeller 4 is reduced, and other parts except guide vanes are not arranged in the air duct, therefore, the air flow can smoothly flow in the air duct, the kinetic energy loss in the air flow flowing process is reduced, and the efficiency of the motor of the dust collector can be improved; in addition, the air flow only contacts with the guide vanes in the air duct in the flowing process, so that the noise is reduced.

On the basis of the above embodiment, the second fixing portions 43 may be provided as first threaded holes evenly distributed in the circumferential direction of the inner ring wall, and the number of the first threaded holes is at least two.

Preferentially, can mould plastics formula structure as an organic whole with the outer rampart of stator with the stay, compare in split type setting, can reduce the manufacturing cost of product and the administrative cost of material to the backward flow that the fluid that has reduced split type to lead to formed in the stator, thereby improved the efficiency of motor.

Preferably, the number of the guide vanes is 13, and the guide vanes are uniformly distributed along the circumferential direction of the outer ring wall.

It should be noted that, for convenience of installation, the height of the outer annular wall is higher than that of the inner annular wall, and three second grooves 42 for positioning the rear bracket 25 are provided at one end of the outer annular wall away from the second fixing portion 43, and the second grooves 42 are uniformly distributed along the circumferential direction of the outer annular wall.

Preferably, the motor housing 3 is connected to the stator vane wheel 4 by 3 screws M3 × 6.

Preferably, a positioning ring 41 for positioning and installing the motor housing may be provided on the inner annular wall of the fixed impeller 4, and the positioning ring 41 is provided on the upper portion of the inner annular wall.

On the basis of the above embodiment, the first fixing portion may be a boss 121a protruding from the upper surface of the insulating skeleton 12, a second threaded hole is formed in the boss 121a, and the circuit board 7 is provided with a through hole matching with the second threaded hole.

In the process of fixing the circuit board 7, the terminals 14 are first inserted into the corresponding connection holes in the circuit board 7, and then the second screw holes are made to correspond to the through holes so that the fastening screws are fitted through the through holes to the second screw holes.

Preferably, the boss 121a is a cylindrical boss 121 a.

Preferably, the insulating bobbin 12 may be provided in a split structure including an upper bobbin 121 inserted from an upper portion of the stator block and a lower bobbin 122 inserted from a lower portion of the stator block, and the boss 121a is provided on an upper surface of the upper bobbin 121.

On the basis of the embodiment, can set up motor housing 3 into metal casing, can be for the iron material, at the in-process that uses, metal casing's thermal diffusivity is better than in plastic casing, and the magnetic permeability improves moreover, can effectively reduce the magnetic leakage.

In the assembling process, the stator assembly 1 and the motor housing 3 may be in interference fit or clearance fit, and when the clearance fit is achieved, the stator assembly 1 needs to be bonded to the motor housing 3 through an adhesive.

Since the stator core 11 is formed by splicing at least three stator pieces, first grooves 111 or protrusions 112 for matching with adjacent stator pieces can be arranged on both sides of the circumference of any stator piece.

Specifically, the first groove 111 or the protrusion 112 may be disposed on two circumferential sides of an iron yoke of a stator piece, only the first groove 111 or only the protrusion 112 may be disposed in the same stator piece, or the first groove 111 may be disposed on one side and the protrusion 112 may be disposed on the other side, which need to be disposed in cooperation with an adjacent stator piece.

As shown in fig. 12, the rotor assembly 2 includes a rotor shaft 21, a magnet 22, a bearing 23, a wave-shaped elastic sheet 24 and a rear bracket 25, and in the assembling process, the rotor shaft 21 and the magnet 22 can be in clearance fit and are connected by adhesive, the bearing 23 and the rear bearing are in interference fit, the wave-shaped elastic sheet 24 is freely placed in a rear bearing chamber and is in clearance fit, and the bearing 23 and the bearing chamber are in clearance fit and are connected by adhesive.

Preferably, the rear bracket 25 can be set to be the rear bracket 25 made of metal, the rear bracket 25 made of metal has good heat dissipation performance, and the heat dissipation effect of the motor can be further improved.

Preferably, the movable impeller 5 is made of an aluminum alloy material, the movable impeller 5 and the rotor shaft 21 may be in clearance fit or interference fit, and when in clearance fit, the movable impeller 5 and the rotor shaft need to be connected through connecting pieces such as connecting screws; the motor shell 3 is made of SECD material or other materials with the same grade, the fan cover 6 is made of engineering plastics or other materials with the same grade, the rear cover 8 mainly serves to protect the circuit board 7, and the rear cover 8 is made of engineering plastics or other materials with the same grade.

It should be noted that the vacuum cleaner motor provided in this document is a high-speed motor, the rotation speed can be 35000rpm-100000rpm, the power is 40W-140W, and the vacuum cleaner motor can be adjusted according to the requirement, and has the characteristics of high efficiency, long service life, and small volume, in the aspect of heat dissipation of the bearing 23, the thermal conductivity coefficient of the plastic is 0.2-0.25, and the thermal conductivity coefficient of the galvanized plate is 36-54, which is more than 200 times that of the plastic, and can effectively help the bearing 23 to dissipate heat.

The first and second recesses 111 and 42, and the first and second fixing portions 43 and 43 mentioned in the present document are only for distinguishing the difference of the positions and are not in sequence.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The utility model provides an arbitrary compound mode of all embodiments all is in this utility model's a protection scope, does not do here and gives unnecessary details.

The above details are provided for the motor of the vacuum cleaner provided by the present invention. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A cleaner motor, comprising: the motor comprises a motor shell (3), a stator assembly (1), a rotor assembly (2), a fixed impeller (4), a movable impeller (5), a circuit board (7), a fan cover (6) and a rear cover (8); it is characterized in that the preparation method is characterized in that,

the stator assembly (1) comprises a stator core (11) formed by splicing at least three stator blocks, an insulating framework (12) inserted into the stator core (11) and a winding (13) wound outside the insulating framework (12); one end of the insulating framework (12) provided with the terminal (14) is provided with a first fixing part for fixing the circuit board (7), and projections of the first fixing part are all positioned in an area surrounded by the motor shell (3) along the axial direction of the dust collector motor;

the fixed impeller (4) comprises a guide vane, an outer ring wall connected with the outer end of the guide vane, an inner ring wall connected with the inner end of the guide vane, a central hole for positioning the rotor assembly (2) and a second fixing part (43) arranged between the inner ring wall and the central hole, wherein the second fixing part (43) is used for fixing the motor shell (3);

along the axial direction of the dust collector motor, the projections of the motor shell (3) are all positioned in the area enclosed by the inner annular wall.

2. The motor for a vacuum cleaner as claimed in claim 1, wherein the second fixing portion (43) is a first threaded hole uniformly distributed along a circumferential direction of the inner annular wall, and the number of the first threaded holes is at least two.

3. The cleaner motor according to claim 2, wherein the number of the guide vanes is 13, and the guide vanes are uniformly distributed along a circumferential direction of the outer ring wall.

4. The motor for vacuum cleaner as claimed in claim 1, wherein the first fixing portion is a boss (121a) protruding from the upper surface of the insulating frame (12), the boss (121a) has a second threaded hole therein, and the circuit board (7) has a through hole for engaging with the second threaded hole.

5. The cleaner motor according to claim 4, wherein the insulating bobbin (12) includes an upper bobbin (121) inserted from an upper portion of the stator piece and a lower bobbin (122) inserted from a lower portion of the stator piece, and the boss (121a) is provided on an upper surface of the upper bobbin (121).

6. The vacuum cleaner motor according to claim 1, characterized in that the motor housing (3) is a metal housing.

7. The cleaner motor according to claim 6, wherein both sides of the circumference of any of the stator pieces are provided with a first groove (111) or a projection (112) for engaging with an adjacent stator piece.

8. The motor for the vacuum cleaner as claimed in any one of claims 1 to 7, wherein the rotor assembly (2) comprises a rotor shaft (21), a magnet (22), a bearing (23), a wave-shaped spring (24) and a rear bracket (25), the bearing (23) is sleeved on the rotor shaft (21) and is in interference fit with the rotor shaft (21), and the rear bracket (25) is a rear bracket (25) made of metal.

9. The cleaner motor according to claim 8, wherein the outer annular wall is provided with three second grooves (42) for positioning the rear bracket (25), and the second grooves (42) are evenly distributed along a circumferential direction of the outer annular wall.

10. The vacuum cleaner motor according to any of claims 1-7, wherein the stator core (11) of the stator assembly (1) is interference fitted with the motor housing (3);

or a stator core (11) in the stator assembly (1) is in clearance fit with the motor shell (3) and is bonded to the motor shell (3) through adhesive.

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