CN218920129U

CN218920129U - Outer rotor motor

Info

Publication number: CN218920129U
Application number: CN202223107011.9U
Authority: CN
Inventors: 李浩然; 何锦豪; 李卓; 杨帆; 苏鋆
Original assignee: Dayang Electric Wuhan Research Institute Co ltd
Current assignee: Dayang Electric Wuhan Research Institute Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-04-25
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses an outer rotor motor, wherein a first sleeve shell downwards extends from the outer edge of the bottom surface of a bottom plate, an annular flange is protruded from the bottom surface of the bottom plate around the opening position of a bearing chamber, a groove is formed among the first sleeve shell, the bottom plate and the annular flange, a plurality of terminal holes on the bottom plate are positioned between the first sleeve shell and the annular flange, a circuit board is arranged in the groove, a control box is arranged at the bottom of the first sleeve shell, pouring sealant for packaging the circuit board is filled in the groove.

Description

Outer rotor motor

Technical field:

the utility model relates to an external rotor motor.

The background technology is as follows:

as shown in fig. 1, the existing external rotor motor comprises a motor 1A and a controller 2A, the controller 2A comprises a control box 21A and a circuit board 22A, the motor 1A comprises a rotating shaft 11A, a stator assembly 12A, an external rotor 13A and a sleeve seat 14A, the stator assembly 12A comprises a stator core 121A, an end insulation 122A and a coil winding 123A, a plurality of connection terminals 124A are mounted on the end insulation 122A, the connection terminals 124A are electrically connected with the coil winding 123A, the sleeve seat 14A comprises a bottom plate 141A and a sleeve 142A protruding upwards from the middle of the bottom plate 141A, bearing chambers 1421A are formed at two ends of the sleeve 142A, the control box 21A is mounted on the bottom surface of the bottom plate 141A, a plurality of terminal holes 143A are formed in the bottom plate 141A, the end portions of the connection terminals 124A extend out of the terminal holes 143A of the bottom plate 141A to be electrically connected with the circuit board 22A of the controller 2A, the external rotor 13A is sleeved outside the stator assembly 12A, a groove capable of storing pouring glue is not capable of being mounted on the circuit board 22A in the structure, and the protection level cannot be satisfied by adding glue.

The utility model comprises the following steps:

the utility model aims to provide an outer rotor motor, which can solve the technical problems that the installation position of a circuit board of the outer rotor motor in the prior art is not provided with a groove capable of storing pouring sealant, so that the protection grade cannot be improved by adding the pouring sealant, and the protection requirement of a customer cannot be met.

The aim of the utility model is achieved by the following technical scheme.

The utility model aims to provide an external rotor motor, which comprises a motor and a controller, wherein:

the controller comprises a control box and a circuit board;

the motor comprises a rotating shaft, a stator assembly, an outer rotor and a sleeve seat, wherein the stator assembly comprises a stator core, an end part insulator and a coil winding, a plurality of wiring terminals are arranged on the end part insulator and are electrically connected with the coil winding, the sleeve seat comprises a bottom plate and a sleeve protruding upwards from the middle of the bottom plate, bearing chambers are arranged at two ends of the sleeve, a control box is arranged on the bottom surface of the bottom plate, a plurality of terminal holes are arranged on the bottom plate, the end parts of the wiring terminals extend out from the terminal holes of the bottom plate and are electrically connected with a circuit board of a controller, and the outer rotor is sleeved outside the stator assembly; the method is characterized in that:

the bottom surface outside edge of bottom plate downwardly extending first sleeve shell, the bottom surface of bottom plate is around the annular flange of opening position protrusion of bearing room, enclose into the recess between first sleeve shell, bottom plate and the annular flange, and a plurality of terminal holes on the bottom plate are located between first sleeve shell and the annular flange, and the circuit board is installed in the recess, and the control box is installed in the bottom of first sleeve shell, annotates in the recess has the pouring sealant that is used for encapsulating the circuit board.

The motor further comprises an insulating sealing pad, the insulating sealing pad is arranged on the bottom surface of the bottom plate, an insulating flange is arranged on the insulating sealing pad in a protruding mode at the position corresponding to each terminal hole, through holes are formed in the insulating flange, and the end portions of the wiring terminals extend out of the through holes of the insulating sealing pad and are electrically connected with the circuit board.

The insulating flange described above protrudes from the top surface of the insulating gasket.

The two end surfaces of the insulating sealing gasket are provided with a plurality of concave grooves to form a wavy structure.

And a clearance gap is arranged on the bottom surface of the insulating sealing gasket between the two adjacent insulating flanges.

The insulating sealing gasket is made of rubber materials.

The bottom surface of the bottom plate is provided with a plurality of mounting seats, the circuit board is fixedly mounted on the mounting seats through screws, and the circuit board is propped against the bottom surface of the insulating sealing gasket.

The top surface of the bottom plate protrudes out of the inner annular ring and the outer annular ring, the inner annular ring is positioned in the outer annular ring, a waterproof groove is formed between the inner annular ring and the outer annular ring, and a plurality of terminal holes are positioned in the inner annular ring.

The outer rotor comprises a rotor shell and a plurality of permanent magnets, the rotor shell comprises an end plate and a second sleeve shell extending from the edge of the end plate, the end plate and the second sleeve shell enclose a cavity, the plurality of permanent magnets are circumferentially arranged on the inner wall surface of the second sleeve shell at intervals, when the outer rotor is sleeved outside the stator assembly, the bottom of the second sleeve shell of the outer rotor stretches into the waterproof groove, and a labyrinth sealing structure is formed between the waterproof groove and the second sleeve shell.

The outer ring is provided with a plurality of notches which are communicated with the waterproof groove.

Compared with the prior art, the utility model has the following effects:

1) According to the utility model, the first sleeve shell downwards extends out of the outer edge of the bottom surface of the bottom plate, the annular flange is protruded from the bottom surface of the bottom plate around the opening position of the bearing chamber, a groove is formed among the first sleeve shell, the bottom plate and the annular flange, a plurality of terminal holes on the bottom plate are positioned between the first sleeve shell and the annular flange, the circuit board is arranged in the groove, the control box is arranged at the bottom of the first sleeve shell, pouring sealant for packaging the circuit board is filled in the groove, the structure arrangement is reasonable, the structure is simple, the dampproof and waterproof effects of the circuit board can be met by adding the structure arrangement of the groove, anti-collision protection can be well achieved, and the protection requirement of customers is met.

2) Other advantages of the present utility model are described in detail in the examples section.

Description of the drawings:

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a perspective view provided by the present utility model;

FIG. 3 is a partially exploded view provided by the present utility model;

FIG. 4 is an exploded view of the motor and insulating gasket provided by the present utility model;

FIG. 5 is a perspective view of a sleeve mount provided by the present utility model;

FIG. 6 is another angular perspective view of the sleeve mount provided by the present utility model;

FIG. 7 is a perspective view of an insulating gasket provided by the present utility model;

FIG. 8 is another angular perspective view of the insulating mat seal provided by the present utility model;

FIG. 9 is a front view of the present utility model;

FIG. 10 isbase:Sub>A cross-sectional view of A-A of FIG. 9;

FIG. 11 is an enlarged view of a portion of B in FIG. 10;

fig. 12 is a partial enlarged view of C in fig. 10.

The specific embodiment is as follows:

the utility model is described in further detail below by means of specific embodiments in connection with the accompanying drawings.

As shown in fig. 2 to 12, the present embodiment provides an external rotor motor including a motor 100 and a controller 200, wherein:

the controller 200 includes a control box 201 and a wiring board 202;

the motor 100 comprises a rotating shaft 1, a stator assembly 2, an outer rotor 3 and a sleeve seat 4, wherein the stator assembly 2 comprises a stator core 21, an end part insulation 22 and a coil winding 23, a plurality of wiring terminals 24 are arranged on the end part insulation 22, the wiring terminals 24 are electrically connected with the coil winding 23, the sleeve seat 4 comprises a bottom plate 41 and a sleeve 42 protruding upwards from the middle of the bottom plate 41, bearing chambers 421 are arranged at two ends of the sleeve 42, a control box 201 is arranged on the bottom surface of the bottom plate 41, a plurality of terminal holes 411 are arranged on the bottom plate 41, the end parts of the wiring terminals 24 extend out of the terminal holes 411 of the bottom plate 41 and are electrically connected with a circuit board 202 of a controller 200, and the outer rotor 3 is sleeved outside the stator assembly 2; the method is characterized in that:

the bottom surface outside edge of bottom plate 41 downwardly extending first sleeve shell 412, the bottom surface of bottom plate 41 encircles opening 4210 position protrusion annular flange 413 of bearing room 421, enclose into recess 414 between first sleeve shell 412, bottom plate 41 and the annular flange 413, a plurality of terminal holes 411 on the bottom plate 41 are located between first sleeve shell 412 and the annular flange 413, the circuit board 202 is installed in recess 414, the bottom at first sleeve shell 412 is installed to control box 201, annotate the pouring sealant 300 that is used for encapsulating circuit board 202 in the recess 414, this structural arrangement is reasonable, simple structure, can satisfy dampproofing, the waterproof effect of circuit board through the structural arrangement that increases the recess, can also fine play anticollision protection, satisfy customer's protection demand.

The motor 100 further comprises an insulating gasket 5, the insulating gasket 5 is mounted on the bottom surface of the bottom plate 41, an insulating flange 51 protrudes from the insulating gasket 5 at a position corresponding to each terminal hole 411, a through hole 52 is formed in the insulating flange 51, the end portion of the wiring terminal 24 extends out of the through hole 52 of the insulating gasket 5 to be electrically connected with the circuit board 202, potting adhesive is effectively prevented from entering the motor, and the sealing effect is good.

The above-described insulating flange 51 protrudes from the top surface of the insulating gasket 5.

The two end surfaces of the insulating sealing gasket 5 are provided with a plurality of concave grooves 53 to form a wavy structure, so that the insulating sealing gasket 5 is easier to compress, and the sealing effect is improved.

Between the two adjacent insulating flanges 51, a clearance space 54 is provided on the bottom surface of the insulating gasket 5, so that the insulating gasket 5 is easier to compress, and the sealing effect is improved.

The insulating gasket 5 is made of rubber material.

The bottom surface of the bottom plate 41 is provided with a plurality of mounting seats 415, the circuit board 202 is fixedly mounted on the mounting seats 415 through the bolts 400, the circuit board 202 is abutted against the bottom surface of the insulating sealing gasket 5, and the structural arrangement is reasonable.

The top surface of the bottom plate 41 protrudes into the inner annular ring 416 and the outer annular ring 417, the inner annular ring 416 is located in the outer annular ring 417, a waterproof groove 418 is formed between the inner annular ring 416 and the outer annular ring 417, and the plurality of terminal holes 411 are located in the inner annular ring 416, so that the sealing effect is good.

The outer rotor 3 includes a rotor housing 31 and a plurality of permanent magnets 32, the rotor housing 31 includes an end plate 311 and a second sleeve housing 312 extending from the edge of the end plate 311, the end plate 311 and the second sleeve housing 312 enclose a cavity 313, the plurality of permanent magnets 32 are circumferentially mounted on the inner wall surface of the second sleeve housing 312 at intervals, when the outer rotor 3 is sleeved outside the stator assembly 2, the bottom of the second sleeve housing 312 of the outer rotor 3 extends into the waterproof groove 418, and a labyrinth seal structure is formed between the waterproof groove 418 and the second sleeve housing 312, so that the sealing effect is good.

The outer annular ring 417 is provided with a plurality of notches 4171, the notches 4171 are communicated with the waterproof groove 418, when rainwater enters the waterproof groove, the rainwater is blocked by the inner annular ring 416, so that the rainwater is discharged from the notches 4171 of the outer annular ring 417, and the rainwater is prevented from entering the motor, so that the motor has a good effect and a simple structure.

The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present utility model are included in the scope of the present utility model.

Claims

1. An external rotor motor comprising a motor (100) and a controller (200), wherein:

the controller (200) comprises a control box (201) and a circuit board (202);

the motor (100) comprises a rotating shaft (1), a stator assembly (2), an outer rotor (3) and a sleeve seat (4), wherein the stator assembly (2) comprises a stator core (21), an end part insulator (22) and a coil winding (23), a plurality of wiring terminals (24) are arranged on the end part insulator (22), the wiring terminals (24) are electrically connected with the coil winding (23), the sleeve seat (4) comprises a bottom plate (41) and a sleeve (42) protruding upwards from the middle of the bottom plate (41), bearing chambers (421) are formed in two ends of the sleeve (42), a control box (201) is arranged on the bottom surface of the bottom plate (41), a plurality of terminal holes (411) are formed in the bottom plate (41), the end parts of the wiring terminals (24) extend out of the terminal holes (411) of the bottom plate (41) to be electrically connected with a circuit board (202) of the controller (200), and the outer rotor (3) is sleeved outside the stator assembly (2); the method is characterized in that:

the bottom surface outside edge of bottom plate (41) down extends first sleeve shell (412), the bottom surface of bottom plate (41) is around opening (4210) position protrusion annular flange (413) of bearing room (421), enclose between first sleeve shell (412), bottom plate (41) and annular flange (413) and become recess (414), a plurality of terminal hole (411) on bottom plate (41) are located between first sleeve shell (412) and annular flange (413), circuit board (202) are installed in recess (414), control box (201) are installed in the bottom of first sleeve shell (412), annotate in recess (414) and are used for encapsulating pouring sealant (300) of circuit board (202).

2. An external rotor motor according to claim 1, wherein: the motor (100) further comprises an insulating sealing gasket (5), the insulating sealing gasket (5) is arranged on the bottom surface of the bottom plate (41), an insulating flange (51) protrudes from the insulating sealing gasket (5) at a position corresponding to each terminal hole (411), a through hole (52) is formed in the insulating flange (51), and the end part of the wiring terminal (24) protrudes from the through hole (52) of the insulating sealing gasket (5) to be electrically connected with the circuit board (202).

3. An external rotor motor according to claim 2, wherein: an insulating flange (51) protrudes from the top surface of the insulating gasket (5).

4. An external rotor motor according to claim 3, characterized in that: both end surfaces of the insulating sealing gasket (5) are provided with a plurality of concave grooves (53) to form a wavy structure.

5. An external rotor motor as claimed in claim 4, wherein: a clearance gap (54) is arranged between two adjacent insulating flanges (51) and positioned on the bottom surface of the insulating sealing gasket (5).

6. An external rotor motor as claimed in claim 5, wherein: the insulating sealing gasket (5) is made of rubber materials.

7. An external rotor motor according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: the bottom surface of bottom plate (41) is equipped with a plurality of mount pads (415), and circuit board (202) pass through screw (400) fixed mounting on mount pad (415), and circuit board (202) support on the bottom surface of insulating sealed pad (5).

8. An external rotor motor as claimed in claim 7, wherein: the top surface of the bottom plate (41) protrudes out of the inner annular ring (416) and the outer annular ring (417), the inner annular ring (416) is positioned in the outer annular ring (417), a waterproof groove (418) is formed between the inner annular ring (416) and the outer annular ring (417), and a plurality of terminal holes (411) are positioned in the inner annular ring (416).

9. An external rotor motor as claimed in claim 8, wherein: the outer rotor (3) comprises a rotor shell (31) and a plurality of permanent magnets (32), the rotor shell (31) comprises an end plate (311) and a second sleeve shell (312) extending from the edge of the end plate (311), the end plate (311) and the second sleeve shell (312) enclose a cavity (313), the plurality of permanent magnets (32) are circumferentially arranged on the inner wall surface of the second sleeve shell (312) at intervals, when the outer rotor (3) is sleeved outside the stator assembly (2), the bottom of the second sleeve shell (312) of the outer rotor (3) stretches into a waterproof groove (418), and a labyrinth sealing structure is formed between the waterproof groove (418) and the second sleeve shell (312).

10. An external rotor motor according to claim 9, wherein: the outer annular ring (417) is provided with a plurality of notches (4171), and the notches (4171) are communicated with the waterproof groove (418).