CN215733791U

CN215733791U - External rotor motor

Info

Publication number: CN215733791U
Application number: CN202121918946.8U
Authority: CN
Inventors: 李发胜; 张贵; 李卓; 谢观生
Original assignee: Zhongshan Broad Ocean Motor Co Ltd
Current assignee: Zhongshan Broad Ocean Motor Co Ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-02-01
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses an external rotor motor, which comprises a motor and a controller, wherein the motor comprises a rotating shaft, a stator component, an external rotor and a sleeve seat, a plurality of wiring terminals are arranged on end insulation, the sleeve seat comprises a bottom plate and a sleeve which protrudes upwards from the middle of the bottom plate, a plurality of terminal holes are arranged on the bottom plate, a groove is dug out on the bottom surface of the bottom plate, the terminal holes are positioned in the groove and arranged on the bottom surface of the groove, an insulation sealing gasket is arranged in the groove, a flange is protruded on the insulation sealing gasket corresponding to each terminal hole and is embedded in the terminal hole, a through hole is arranged on the flange, the middle part of each wiring terminal penetrates through the through hole, the end part of each wiring terminal extends out of the through hole of the insulation sealing gasket and is electrically connected with a circuit board of the controller, the insulation between the interior of the motor and the interior of the controller is realized under the condition that the direct power supply connection of the motor and the controller is ensured through the insulation sealing gasket, the sealing effect is good, and the protection performance inside the motor and the controller is improved.

Description

External rotor motor

The technical field is as follows:

the utility model relates to an outer rotor motor.

Background art:

the existing external rotor motor comprises a motor and a controller, the motor comprises a rotating shaft, a stator component, an outer rotor and a sleeve seat, the stator component comprises a stator core, an end insulation and a coil winding, a plurality of wiring terminals are arranged on the end insulation, the wiring terminals are electrically connected with the coil winding, the sleeve seat comprises a bottom plate and a sleeve which protrudes upwards from the middle of the bottom plate, bearing chambers are arranged at two ends of the sleeve, bearings are arranged in the bearing chambers, the rotating shaft is positioned in the sleeve, two ends of the rotating shaft are respectively supported on the bearings, the outer rotor comprises a casing sleeve and a plurality of permanent magnets arranged on the inner wall surface of the casing sleeve, one end of the rotating shaft extends out of the sleeve and is connected with the casing sleeve, the stator component is nested and arranged outside the sleeve, the outer rotor is sleeved outside the stator component, and in order to connect the wiring terminals with a circuit board in the controller, the prior art is provided with an integral gap or hole on the bottom plate, the end parts of the connecting terminals extend out of the whole notch or hole to be electrically connected with a circuit board of the controller, and the whole notch or hole is formed, so that the sealing effect of the motor is reduced, the protection performance of the motor is reduced, and the insulation effect is poor.

The utility model content is as follows:

the utility model aims to provide an outer rotor motor, which can solve the technical problems that the sealing effect of the motor is reduced due to the fact that an integral notch or hole is formed in a bottom plate of a sleeve seat in the prior art, so that the protection performance of the motor is reduced, and the insulation effect is poor.

The purpose of the utility model is realized 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 shell and a circuit board arranged in the shell;

the motor includes the pivot, stator module, external rotor and cover cylinder seat, stator module includes stator core, tip is insulating and coil winding, install a plurality of binding post on the tip is insulating, binding post is in the same place with coil winding electric connection, cover cylinder seat includes the bottom plate and from the middle bellied sleeve up of bottom plate, the casing is installed on the bottom surface of bottom plate, be equipped with a plurality of terminal holes on the bottom plate, binding post's tip stretches out from the terminal hole of bottom plate and is connected with the circuit board electricity of controller, the external rotor cover is located the stator module outside, its characterized in that:

the bottom surface of the bottom plate is dug with a groove, a plurality of terminal holes are located in the groove and are arranged on the bottom surface of the groove, an insulating sealing gasket is arranged in the groove, a flange is arranged on the insulating sealing gasket in a protruding mode corresponding to each terminal hole, the flange is embedded in the terminal holes, through holes are formed in the flange, the middle of each wiring terminal penetrates through the through hole, and the end portion of each wiring terminal stretches out of the through hole of the insulating sealing gasket to be electrically connected with a circuit board of the controller.

The opening of the groove is provided with a cover plate, and the cover plate fixes the insulating sealing gasket in the groove.

The two end faces of the insulating sealing gasket are respectively protruded with a flange, the cover plate is provided with a plurality of clearance holes, the clearance holes correspond to the flanges on one end face of the insulating sealing gasket, and when the cover plate is arranged at the opening of the groove, the second flange is nested in the clearance holes.

The cover plate is provided with a plurality of first mounting holes, the edge of the groove is provided with a plurality of second mounting holes, and the cover plate is fixed on the bottom plate by passing through the first mounting holes and the second mounting holes through screws.

The locating groove is formed in the outer side wall of the sleeve, the inner wall of the center hole of the stator core is provided with the locating column, the tool withdrawal grooves are formed in the two sides of the locating column, and the locating column is nested in the locating groove to achieve circumferential locating of the stator core.

The outer rotor comprises a casing sleeve and a plurality of permanent magnets arranged on the inner wall surface of the casing sleeve, a flange extends out of an opening of the casing sleeve, a wind wheel is arranged at the bottom of the flange, the wind wheel comprises a wind wheel outer ring positioned at the bottom, a plurality of blades are arranged on the wind wheel outer ring in the upward circumferential direction, a wind wheel inner ring is arranged on the inner side of the wind wheel outer ring, the diameter of the wind wheel inner ring is smaller than that of the wind wheel outer ring, the inner side of the wind wheel outer ring is connected with the wind wheel inner ring through a plurality of connecting points, a gap between the wind wheel inner ring and the wind wheel outer ring forms an air inlet, a plurality of protruding radiating fins are arranged on a bottom plate at the position below the wind wheel, an air channel is formed between every two adjacent radiating fins, the wind wheel outer ring shields the top of the air channel, the wind wheel outer ring, the flange and the plurality of blades form a centrifugal fan, the outer rotor is driven to rotate when the wind wheel rotates, and airflow radially enters the air channel, then flows into the gap and is thrown out radially outwards under the action of a plurality of fan blades.

The wind wheel inner circle include the roof and from roof first retaining ring of down protrusion and second retaining ring, form first aqua storage tank between first retaining ring and the second retaining ring, the bottom plate up the arch have interior retaining ring and outer retaining ring, interior retaining ring is located telescopic periphery with outer retaining ring, form the second aqua storage tank between interior retaining ring and the outer retaining ring, the first aqua storage tank the inside is embedded into at the top of interior retaining ring, the second aqua storage tank the inside is inserted to the second retaining ring.

The outer side wall of the inner water retaining ring is provided with a diversion trench.

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

1) an external rotor electric machine comprising an electric machine and a controller, wherein: the controller comprises a shell and a circuit board arranged in the shell; the motor includes the pivot, stator module, external rotor and cover cylinder seat, stator module includes stator core, tip is insulating and coil winding, install a plurality of binding post on the tip is insulating, binding post is in the same place with coil winding electric connection, cover cylinder seat includes the bottom plate and from the middle bellied sleeve up of bottom plate, the casing is installed on the bottom surface of bottom plate, be equipped with a plurality of terminal holes on the bottom plate, binding post's tip stretches out from the terminal hole of bottom plate and is connected with the circuit board electricity of controller, the external rotor cover is located the stator module outside, its characterized in that: dig out the recess on the bottom surface of bottom plate, a plurality of terminal holes are located the recess and set up on the bottom surface of recess, install insulating sealing pad in the recess, the position protrusion that corresponds every terminal hole on the insulating sealing pad has the flange, the flange nestification is in terminal hole the inside, be provided with the through-hole on the flange, binding post's middle part passes the through-hole, binding post's tip stretches out from insulating sealing pad's through-hole and is connected with the circuit board electricity of controller, under the condition of having guaranteed motor and the direct power of controller to be connected through insulating sealing pad, realize the inside isolated with the controller of motor, it is sealed effectual, the inside protectiveness with the controller of motor has been improved, and it is insulating effectual.

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

Description of the drawings:

FIG. 1 is a perspective view provided by the present invention;

FIG. 2 is a front view provided by the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a partial enlarged view of B in FIG. 3;

FIG. 5 is an enlarged view of a portion C of FIG. 3;

FIG. 6 is a perspective view of a motor provided by the present invention;

FIG. 7 is a partial exploded view of the motor provided by the present invention;

FIG. 8 is a perspective view of a sleeve mount provided by the present invention;

figure 9 is a perspective view of a wind wheel provided by the present invention;

figure 10 is another angular perspective view of a wind wheel provided by the present invention;

FIG. 11 is a schematic view of a portion of the structure provided by the present invention;

fig. 12 is a partial enlarged view of D in fig. 11.

The specific implementation mode is as follows:

the present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1 to 12, the present embodiment provides an external rotor motor including a motor 100 and a controller 200, wherein:

the controller 200 includes a housing 201 and a circuit board 202 mounted in the housing 201;

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 insulation 22 and a coil winding 23, a plurality of connecting terminals 24 are installed on the end insulation 22, the connecting terminals 24 are electrically connected with the coil winding 23, the sleeve seat 4 comprises a bottom plate 41 and a sleeve 42 which protrudes upwards from the middle of the bottom plate 41, a shell 201 is installed 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 connecting terminals 24 extend out from the terminal holes 411 of the bottom plate 41 and are electrically connected with a circuit board 202 of the controller 200, bearing chambers 421 are arranged at two ends of the sleeve 42, bearings 422 are installed in the bearing chambers 421, the rotating shaft 1 is located in the sleeve 42, two ends of the rotating shaft are respectively supported on the bearings 422, the outer rotor 3 comprises a casing sleeve 31 and a plurality of permanent magnets 32 installed on the inner wall surface of the casing sleeve 31, one end of the rotating shaft 1 extends out from the sleeve 42 and is installed and connected with the casing sleeve 31, stator module 2 nests and installs in telescopic 42's outside, and stator module 2 outside is located to outer rotor 3 cover, its characterized in that:

the bottom surface of the bottom plate 41 is dug with a groove 412, a plurality of terminal holes 411 are positioned in the groove 412 and are arranged on the bottom surface 4121 of the groove 412, an insulating sealing gasket 5 is arranged in the groove 412, a flange 52 protrudes from the insulating sealing gasket 5 corresponding to each terminal hole 411, the flange 52 is embedded in the terminal hole 411 and is provided with a through hole 51, the middle part of the wiring terminal 24 penetrates through the through hole 51, the end part of the wiring terminal 24 extends out of the through hole 51 of the insulating sealing gasket 5 and is electrically connected with a circuit board 202 of the controller 200, the direct power connection of the motor 100 and the controller 200 is ensured through the insulating sealing gasket 5, the isolation between the inside of the motor 100 and the inside of the controller 200 is realized, the sealing effect is good, the protection performance between the inside of the motor 100 and the inside of the controller 200 is improved, and the insulating effect is good.

The cover plate 6 is installed at the opening of the groove 412, the insulating sealing gasket 5 is fixed in the groove 412 by the cover plate 6, the structural arrangement is reasonable, and the insulating sealing gasket 5 is prevented from falling off.

The flanges 52 protrude from the two end faces of the insulating sealing gasket 5, the cover plate 6 is provided with the plurality of clearance holes 61, the clearance holes 61 correspond to the flanges 52 on one end face of the insulating sealing gasket 5, and when the cover plate 6 is installed at the opening of the groove 412, the second flange 53 is embedded in the clearance holes 61, so that the installation and positioning effects are good, and the installation of the cover plate 6 is facilitated.

The cover plate 6 is provided with a plurality of first mounting holes 62, the edge of the groove 412 is provided with a plurality of second mounting holes 413, the cover plate 6 is fixed on the bottom plate 41 by passing the screws 7 through the first mounting holes 62 and the second mounting holes 413, and the mounting structure is simple and firm.

Be equipped with constant head tank 423 on foretell sleeve 42's the lateral wall, the inner wall of stator core 21's centre bore 210 sets up reference column 211, the both sides of reference column 211 are equipped with tool withdrawal groove 212, reference column 211 nests in and realizes the circumference location to stator core 21 inside constant head tank 423, can avoid stator core 21 and sleeve 42 cooperation to lead to unable assembly because of reasons such as chamfer processing does not put in place in the interference fit in-process, increased tool withdrawal groove 212 structure in reference column 211 both sides and can be fine avoid this kind of condition, reduce the processing requirement to sleeve 42.

A flange 33 extends out of the opening of the casing sleeve 31, a wind wheel 8 is mounted at the bottom of the flange 33, the wind wheel 8 comprises a wind wheel outer ring 81 positioned at the bottom, a plurality of fan blades 82 are arranged on the wind wheel outer ring 81 in the upward circumferential direction, a wind wheel inner ring 83 is arranged on the inner side of the wind wheel outer ring 81, the diameter of the wind wheel inner ring 83 is smaller than that of the wind wheel outer ring 81, the inner side of the wind wheel outer ring 81 is connected with the wind wheel inner ring 83 through a plurality of connecting points, a gap 85 between the wind wheel inner ring 83 and the wind wheel outer ring 81 forms an air inlet, a plurality of raised heat dissipation fins 414 are arranged on the bottom plate 41 at the position below the wind wheel 8, an air channel 415 is formed between two adjacent heat dissipation fins 414, the wind wheel outer ring 81 shields the top of the air channel 415, the wind wheel outer ring 81, the flange 33 and the plurality of fan blades 82 form a centrifugal fan, when the outer rotor 3 rotates, the wind wheel 8 is driven to rotate, and the air flows radially enter the air channel 415, then flows into the gap 85 and is radially thrown outwards under the action of the fan blades 82, so that the internal heat dissipation effect of the motor is improved.

The wind wheel inner ring 83 comprises a top plate 831, a first retaining ring 832 and a second retaining ring 833 protruding downwards from the top plate 831, a first water storage groove 834 is formed between the first retaining ring 832 and the second retaining ring 833, an inner water retaining ring 416 and an outer water retaining ring 417 protrude upwards from the bottom plate 41, the inner water retaining ring 416 and the outer water retaining ring 417 are located on the periphery of the sleeve 42, a second water storage groove 418 is formed between the inner water retaining ring 416 and the outer water retaining ring 417, the top of the inner water retaining ring 416 is embedded into the first water storage groove 834, and the second retaining ring 833 is inserted into the second water storage groove 418, so that the waterproof effect of the motor is improved.

The outer side wall of the inner water retaining ring 416 is provided with the diversion groove 4161, so that the invasion of water or dust into the motor 100 can be well reduced under the condition that the shaft is horizontally arranged, and the waterproof and dustproof effects are good.

The above embodiments are only preferred embodiments of the present invention, but the present invention is not limited thereto, and any other changes, modifications, substitutions, combinations, simplifications, which are made without departing from the spirit and principle of the present invention, are all equivalent replacements within the protection scope of the present invention.

Claims

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

the controller (200) comprises a shell (201) and a circuit board (202) installed in the shell (201);

motor (100) is including pivot (1), stator module (2), outer rotor (3) and sleeve seat (4), stator module (2) is including stator core (21), end insulation (22) and coil winding (23), install a plurality of binding post (24) on end insulation (22), binding post (24) are connected together with coil winding (23) electricity, sleeve seat (4) are including bottom plate (41) and from bottom plate (41) middle bellied sleeve (42) up, install on the bottom surface of bottom plate (41) casing (201), be equipped with a plurality of terminal hole (411) on bottom plate (41), the tip of binding post (24) stretches out circuit board (202) electricity connection with controller (200) from terminal hole (411) of bottom plate (41), stator module (2) outside is located in outer rotor (3) cover, its characterized in that:

a groove (412) is dug in the bottom face of the bottom plate (41), a plurality of terminal holes (411) are located in the groove (412) and are formed in the bottom face (4121) of the groove (412), an insulating sealing gasket (5) is installed in the groove (412), a flange (52) protrudes from the position, corresponding to each terminal hole (411), of the insulating sealing gasket (5), the flange (52) is nested in the terminal holes (411), through holes (51) are formed in the flange (52), the middle of each wiring terminal (24) penetrates through the through holes (51), and the end portion of each wiring terminal (24) extends out of the through holes (51) of the corresponding insulating sealing gasket (5) and is electrically connected with a circuit board (202) of the controller (200).

2. The external rotor electric machine according to claim 1, wherein: a cover plate (6) is arranged at the opening of the groove (412), and the insulating sealing gasket (5) is fixed in the groove (412) through the cover plate (6).

3. The external rotor electric machine according to claim 2, wherein: flanges (52) protrude from two end faces of the insulating sealing gasket (5), a plurality of clearance holes (61) are formed in the cover plate (6), the clearance holes (61) correspond to the flanges (52) on one end face of the insulating sealing gasket (5), and when the cover plate (6) is installed at the opening of the groove (412), the second flange (53) is embedded in the clearance holes (61).

4. The external rotor electric machine according to claim 3, wherein: be equipped with a plurality of first mounting holes (62) on apron (6), the edge of recess (412) is equipped with a plurality of second mounting holes (413), passes first mounting hole (62) and second mounting hole (413) through screw (7), fixes apron (6) at bottom plate (41).

5. An external rotor electric machine according to claim 1 or 2 or 3 or 4, wherein: be equipped with constant head tank (423) on the lateral wall of sleeve (42), the inner wall of the centre bore (210) of stator core (21) sets up reference column (211), and the both sides of reference column (211) are equipped with tool withdrawal groove (212), and reference column (211) nestification realizes the circumferential positioning to stator core (21) in constant head tank (423).

6. The external rotor electric machine according to claim 5, wherein: the outer rotor (3) comprises a casing sleeve (31) and a plurality of permanent magnets (32) arranged on the inner wall surface of the casing sleeve (31), a flange (33) extends out of an opening of the casing sleeve (31), a wind wheel (8) is arranged at the bottom of the flange (33), the wind wheel (8) comprises a wind wheel outer ring (81) positioned at the bottom, a plurality of fan blades (82) are arranged upwards and circumferentially on the wind wheel outer ring (81), a wind wheel inner ring (83) is arranged on the inner side of the wind wheel outer ring (81), the diameter of the wind wheel inner ring (83) is smaller than that of the wind wheel outer ring (81), the inner side of the wind wheel outer ring (81) is connected with the wind wheel inner ring (83) through a plurality of connecting points, an air inlet is formed by a gap (85) between the wind wheel inner ring (83) and the wind wheel outer ring (81), a plurality of raised heat dissipation fins (414) are arranged on a bottom plate (41) at the position below the wind wheel (8), and an air channel (415) is formed between two adjacent heat dissipation fins (414), the top of the air duct (415) is shielded by the outer ring (81) of the wind wheel, a centrifugal fan is formed by the outer ring (81) of the wind wheel, the flange (33) and the plurality of fan blades (82), when the outer rotor (3) rotates, the wind wheel (8) is driven to rotate, airflow radially enters the air duct (415), then flows into the gap (85), and is radially thrown outwards under the action of the plurality of fan blades (82).

7. The external rotor electric machine according to claim 6, wherein: wind wheel inner circle (83) include roof (831) and from roof (831) down first retaining ring (832) and second retaining ring (833) of protrusion, form first aqua storage tank (834) between first retaining ring (832) and second retaining ring (833), bottom plate (41) up the arch have interior water blocking circle (416) and outer water blocking circle (417), interior water blocking circle (416) and outer water blocking circle (417) are located the periphery of sleeve (42), form second aqua storage tank (418) between interior water blocking circle (416) and outer water blocking circle (417), the top of interior water blocking circle (416) is embedded into first aqua storage tank (834) the inside, second retaining ring (833) is inserted into second aqua storage tank (418) the inside.

8. The external rotor electric machine according to claim 7, wherein: the outer side wall of the inner water retaining ring (416) is provided with a diversion trench (4161).