CN215009799U

CN215009799U - Positioning assembly structure of outer rotor and magnetic block of fan

Info

Publication number: CN215009799U
Application number: CN202121308939.6U
Authority: CN
Inventors: 郑奎
Original assignee: Dongguan Shengtu New Energy Technology Co ltd
Current assignee: Dongguan Shengtu New Energy Technology Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-12-03
Anticipated expiration: 2031-06-11

Abstract

The utility model provides a pair of positioning assembly structure of fan external rotor and magnetic path, contain the rotor shell, a plurality of even bonding arc magnetic path on the circle in the rotor shell, equal butt has the setting element between every two adjacent arc magnetic paths, the setting element includes first location parting bead and the second location parting bead of fifty percent discount setting, first location parting bead and second location parting bead one end are reverse respectively to be provided with first location head and second location head, first location head and second location head offset with a terminal surface of adjacent two arc magnetic paths respectively, first location head and second location head top butt are on the top surface in the rotor shell, the setting element is fixed with the bonding of rotor shell inner circle. During assembly, a positioning piece is clamped between every two adjacent arc-shaped magnetic blocks, the positioning pieces and the arc-shaped magnetic blocks are spliced on the inner circle of the rotor shell, the arc-shaped magnetic blocks are uniformly distributed on the inner circle of the rotor shell, the uniform distribution of magnetism on the inner circle of the rotor shell is ensured, the performance of the fan is improved, and the noise and vibration of the fan are reduced.

Description

Positioning assembly structure of outer rotor and magnetic block of fan

Technical Field

The utility model relates to a motor indicates a positioning assembly structure of fan external rotor and magnetic path especially.

Background

The fan mainly comprises a stator and a rotor assembled with a wind wheel, wherein the rotor is also divided into an outer rotor and an inner rotor, the outer rotor is a part used by most of fans and plays a role in matching with the stator to form torque and support the wind wheel. The magnetic blocks need to be installed on the inner ring of the rotor shell when the rotor is combined, the magnetic blocks are generally installed on the inner ring of the rotor shell, and because the magnetic blocks are not positioned during assembling, the magnetic blocks are not uniformly distributed on the inner ring of the rotor shell, so that the magnetic property of the inner ring of the rotor shell is not uniform, the performance of the fan is reduced, the noise and the vibration of the fan are aggravated, and the product reject ratio is high.

Disclosure of Invention

The utility model aims to solve the problem that a positioning assembly structure of fan external rotor and magnetic path is provided, do the location to the assembly of magnetic path, let the magnetic path evenly assemble to the rotor shell interior circling, promote the fan performance.

Solve above-mentioned technical problem according to the utility model provides a pair of positioning assembly structure of fan external rotor and magnetic path, contain the rotor shell, a plurality of even arc magnetic path of bonding in the rotor shell circle, the arc magnetic path matches with rotor shell inner circle shape, equal butt has the setting element between every two adjacent arc magnetic paths, the setting element includes first location parting bead and the second location parting bead of fifty percent discount setting, first location parting bead and second location parting bead one end respectively reverse extension be provided with first location head and second location head, first location head and second location head offset with a terminal surface of adjacent two arc magnetic paths respectively, first location head and second location head top butt are on the top surface in the rotor shell, the setting element is fixed with rotor shell inner circle bonding.

Preferably, the arc-shaped magnetic block and the positioning piece are both bonded with the inner ring of the rotor shell through AB glue.

Preferably, first location head and second location head are respectively for being 90 degrees angle bending type formation along first location parting bead and second location parting bead one end, and first location head and second location head all contain continuous right angle supporting part and arc and support the head, and right angle supporting part butt is on rotor shell internal top face, and arc supports the top and offsets with an arc magnetic path terminal surface.

Preferably, the positioning member is formed by integrally bending a metal strip.

Preferably, 4 arc-shaped magnetic blocks are adhered to the inner ring of the rotor shell.

Preferably, the rotor shell outer ring is provided with an impeller clamping ring part in a protruding mode, and the wall of the rotor shell outer ring and the impeller clamping ring part are in transition through an annular inclined plane.

Preferably, the center of the inner top surface of the rotor shell is provided with a bearing prepressing table, and the center of the bearing prepressing table and the top of the rotor shell are provided with shaft holes in a penetrating manner.

Preferably, an annular supporting portion is arranged on the outer ring of the bearing prepressing table, and the rotor shell, the annular supporting portion and the bearing prepressing table are integrally formed by die casting.

The utility model has the advantages that: the utility model provides a location assembly structure of fan external rotor and magnetic path, set up unique assembly structure, each setting element of insertion between every two adjacent arc magnetic path during the assembly, a plurality of setting elements and arc magnetic path amalgamation circle in the rotor shell, let each arc magnetic path evenly distributed circle in the rotor shell, do the support location to two adjacent arc magnetic paths through first location head and second location head, each arc magnetic path of guarantee distribution on the same interior circumference of rotor shell circles is in same high position, circle magnetism evenly distributed in the assurance rotor shell, promote the fan performance, reduce fan noise and vibration.

Drawings

Fig. 1 illustrates the outline structure of the present invention.

Fig. 2 illustrates an exploded view of the present invention.

Fig. 3 illustrates a schematic cross-sectional structure of the present invention.

Fig. 4 illustrates an outline structure diagram of the positioning member of the present invention.

The reference numbers illustrate: the rotor comprises a rotor shell 1, an impeller clamping ring part 10, an annular inclined surface 100, a bearing pre-pressing platform 101, a shaft hole 102, an annular supporting part 103, an arc-shaped magnetic block 2, a positioning piece 3, a first positioning division bar 30, a second positioning division bar 31, a first positioning head 32, a second positioning head 33, a right-angle supporting part 34 and an arc-shaped supporting head 35.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments.

All other embodiments of the person skilled in the art, which are obtained without inventive work on the basis of the described embodiments of the present disclosure, are within the scope of protection of the present disclosure.

Refer to fig. 1-4.

The utility model provides a location assembly structure of fan external rotor and magnetic path, contain rotor shell 1, a plurality of even bonding arc magnetic path 2 at 1 inner circles of rotor shell, arc magnetic path 2 matches with 1 inner circles shape of rotor shell, there is setting element 3 all the butt between every two adjacent arc magnetic paths 2, setting element 3 includes first location parting bead 30 and the second location parting bead 31 of fifty percent discount setting, first location parting bead 30 and the 31 one end of second location parting bead reverse extension respectively are provided with first location head 32 and second location head 33, first location head 32 and second location head 33 offset with 2 terminal surfaces of two adjacent arc magnetic paths respectively, first location head 32 and second location head 33 top butt are on 1 interior top surface of rotor shell, setting element 3 is fixed with 1 inner circle bonding of rotor shell.

During specific assembly, firstly, an arc-shaped magnetic block 2 is pasted on an inner ring of a rotor shell 1 by using glue, then a positioning piece 3 is pasted on the inner ring of the rotor shell 1 by using glue before the glue is not cured, so that a first positioning parting bead 30 and a second positioning parting bead 31 are abutted against one side surface of the arc-shaped magnetic block 2, the tops of a first positioning head 32 and a second positioning head 33 are abutted against the inner top surface of the rotor shell 1, the arc-shaped magnetic block 2 is pushed, the top end surface of the arc-shaped magnetic block 2 is abutted against the bottom of the second positioning head 33, and the positioning of the first arc-shaped magnetic block 2 is completed after the glue is cured; and adhering the other arc-shaped magnetic block 2 to the inner ring of the rotor shell 1 by using glue, pushing the second arc-shaped magnetic block 2 to enable one side surface of the arc-shaped magnetic block 2 to abut against the first positioning parting bead 30 and the second positioning parting bead 31, enabling the top end surface of the second arc-shaped magnetic block 2 to abut against the bottom of the first positioning head 32, completing positioning of the second arc-shaped magnetic block 2 after the glue is cured, sequentially adhering all the arc-shaped magnetic blocks 2 and the positioning pieces 3 to the inner ring of the rotor shell 1 according to the operation, and finally uniformly assembling all the arc-shaped magnetic blocks 2 to the inner ring of the rotor shell 1. The use principle is as follows: because a positioning part 3 is clamped between every two adjacent arc-shaped magnetic blocks 2 during assembly, the positioning parts 3 and the arc-shaped magnetic blocks 2 are tightly spliced on the inner circumference of the rotor shell 1, the arc-shaped magnetic blocks 2 are uniformly distributed on the inner circumference of the rotor shell 1, the two adjacent arc-shaped magnetic blocks 2 are supported and positioned through the first positioning head 32 and the second positioning head 33, the arc-shaped magnetic blocks 2 distributed on the same inner circumference of the rotor shell 1 are ensured to be positioned at the same height position, the uniform distribution of magnetism on the inner circumference of the rotor shell 1 is ensured, the performance of the fan is improved, and the noise and vibration of the fan are reduced.

Based on the above embodiment, the arc-shaped magnetic block 2 and the positioning piece 3 are both bonded with the inner ring of the rotor shell 1 through AB glue. The AB glue has the advantages of high bonding strength, high hardness and high chemical resistance, and the arc-shaped magnetic block 2 and the positioning piece 3 are bonded on the inner ring of the rotor shell 1 by using the AB glue, so that the AB glue can ensure sufficient bonding strength and is reliable in connection.

Based on above-mentioned embodiment, first location head 32 and second location head 33 are respectively for being 90 degrees angle bending type formation along first location parting bead 30 and second location parting bead 31 one end, and first location head 32 and second location head 33 all contain continuous right angle supporting part 34 and arc and support head 35, and right angle supporting part 34 butt is on rotor shell 1 interior top surface, and arc supports head 35 top and 2 terminal surfaces of arc magnetic path and offsets. The arc-shaped magnetic block 2 and the rotor shell 1 are positioned through the right-angle supporting part 34, so that the arc-shaped magnetic block 2 can be ensured to be vertical to the inner top surface of the rotor shell 1 during assembly; the two adjacent arc-shaped magnetic blocks 2 are supported and positioned by the arc-shaped supporting heads 35 on the two sides of the positioning part 3 respectively, so that the two adjacent arc-shaped magnetic blocks 2 are ensured to be positioned at the same height position, and the arc-shaped magnetic blocks 2 are ensured to be uniformly distributed on the inner ring wall of the rotor shell 1.

Based on the above embodiment, the positioning piece 3 is formed by integrally bending the metal strip, is convenient to process, has certain elasticity, ensures that the arc-shaped magnetic blocks 2 assembled on the inner ring of the rotor shell 1 are tightly matched with the positioning piece 3, and has high reliability.

Based on the above embodiment, 4 arc-shaped magnetic blocks 2 are bonded on the inner ring of the rotor shell 1, and the rotor shell has good assembly workability.

Based on the above embodiment, the outer ring of the rotor casing 1 is protruded and wound with the impeller clamping ring portion 10, and the outer ring wall of the rotor casing 1 and the impeller clamping ring portion 10 are transited through the annular inclined surface 100. When cup jointing the wind wheel on rotor shell 1, in order to improve assembly strength, wind wheel installation inner circle internal diameter need set up with impeller snap ring portion 10 interference fit, during the installation on wind wheel installation inner circle passes through annular inclined plane 100 and passes through impeller snap ring portion 10, annular inclined plane 100 plays the effect of direction, improves wind wheel assembly stability.

Based on the above embodiment, the center of the inner top surface of the rotor casing 1 is provided with the bearing pre-pressing platform 101, and the center of the bearing pre-pressing platform 101 and the top of the rotor casing 1 are provided with the shaft hole 102 in a penetrating manner. When the fan is assembled, the upper retaining cover of the ball bearing used for mounting the fan abuts against the top end of the bearing prepressing table 101, the rotating shaft penetrates through the shaft hole 102, and the bearing prepressing table 101 has a prepressing effect on the ball bearing, so that the rotation stability of the ball bearing is improved.

Based on the above embodiment, the annular supporting portion 103 is arranged on the outer ring of the bearing pre-pressing platform 101, the rotor shell 1, the annular supporting portion 103 and the bearing pre-pressing platform 101 are integrally formed by die casting, the annular supporting portion 103 can enhance the connection strength between the bearing pre-pressing platform 101 and the rotor shell 1, and through the integral die casting, the production efficiency is high and the structural strength is high.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. The positioning and assembling structure of the outer rotor and the magnetic blocks of the fan is characterized by comprising a rotor shell (1) and a plurality of arc-shaped magnetic blocks (2) which are uniformly adhered to the inner ring of the rotor shell (1), wherein the arc-shaped magnetic blocks (2) are matched with the inner ring of the rotor shell (1) in shape, a positioning piece (3) is abutted between every two adjacent arc-shaped magnetic blocks (2), the positioning piece (3) comprises a first positioning division bar (30) and a second positioning division bar (31) which are oppositely arranged, one ends of the first positioning division bar (30) and the second positioning division bar (31) are respectively provided with a first positioning head (32) and a second positioning head (33) in a reverse extending manner, the first positioning head (32) and the second positioning head (33) are respectively abutted against one end face of the two adjacent arc-shaped magnetic blocks (2), the top ends of the first positioning head (32) and the second positioning head (33) are abutted against the inner top face of the rotor shell (1), the positioning piece (3) is fixedly bonded with the inner ring of the rotor shell (1).

2. The positioning and assembling structure of the outer rotor and the magnetic blocks of the fan as claimed in claim 1, wherein the arc-shaped magnetic blocks (2) and the positioning pieces (3) are bonded with the inner ring of the rotor case (1) through AB glue.

3. The positioning and assembling structure of the outer rotor and the magnetic block of the fan as claimed in claim 1, wherein the first positioning head (32) and the second positioning head (33) are respectively formed by bending along one end of the first positioning division bar (30) and one end of the second positioning division bar (31) at an angle of 90 degrees, the first positioning head (32) and the second positioning head (33) both comprise a right-angle supporting part (34) and an arc-shaped supporting head (35) which are connected with each other, the right-angle supporting part (34) abuts against the inner top surface of the rotor shell (1), and the top of the arc-shaped supporting head (35) abuts against one end surface of the arc-shaped magnetic block (2).

4. The positioning and assembling structure of the outer rotor and the magnetic block of the fan as claimed in claim 3, wherein the positioning member (3) is formed by integrally bending a metal strip.

5. The positioning and assembling structure of the outer rotor and the magnetic blocks of the fan as claimed in claim 1, wherein 4 arc-shaped magnetic blocks (2) are bonded on the inner ring of the rotor shell (1).

6. The positioning and assembling structure of the outer rotor and the magnetic block of the fan as claimed in claim 1, wherein an impeller clamping ring portion (10) is convexly wound on the outer ring of the rotor shell (1), and the outer ring wall of the rotor shell (1) and the impeller clamping ring portion (10) are transited through an annular inclined surface (100).

7. The positioning and assembling structure of the outer rotor and the magnetic block of the fan as claimed in claim 1, wherein a bearing pre-pressing table (101) is disposed at the center of the inner top surface of the rotor casing (1), and a shaft hole (102) is disposed through the center of the bearing pre-pressing table (101) and the top of the rotor casing (1).

8. The positioning and assembling structure of the outer rotor and the magnetic block of the fan as claimed in claim 7, wherein the outer ring of the bearing pre-pressing table (101) is provided with an annular supporting portion (103), and the rotor shell (1), the annular supporting portion (103) and the bearing pre-pressing table (101) are integrally formed by die casting.