CN217135271U - External rotor motor - Google Patents
External rotor motor Download PDFInfo
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- CN217135271U CN217135271U CN202220477241.5U CN202220477241U CN217135271U CN 217135271 U CN217135271 U CN 217135271U CN 202220477241 U CN202220477241 U CN 202220477241U CN 217135271 U CN217135271 U CN 217135271U
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- bottom plate
- heat dissipation
- insulating
- bearing chamber
- circuit board
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Abstract
The utility model discloses an external rotor motor, which comprises a motor and a controller, wherein the edge of a bottom plate axially extends downwards to form an annular flange, the bottom plate and the flange enclose a cavity, a heat dissipation platform is protruded on part of the bottom surface of the bottom plate, an insulating seat for covering a second bearing chamber is arranged at the opening of the second bearing chamber, a heat-conducting insulating sheet is laid on the heat-radiating platform, the electronic power heating device on the circuit board is pressed against the heat-conducting insulating sheet to transfer heat to the heat-radiating platform, the insulation between the interior of the motor and the interior of the controller is realized through the insulation seat structure, the dust or water vapor of the second bearing chamber is effectively prevented from entering the shell to be contacted with the circuit board, the sealing effect between the motor and the controller is ensured, the sealing effect is good, meanwhile, the radiating platform is structurally arranged, so that the radiating effect of a high-power device on the circuit board can be ensured to be good, and the radiating requirement of a high-power motor is met.
Description
The technical field is as follows:
the utility model relates to an external rotor electric machine.
Background art:
the existing external rotor motor comprises a motor entity part and a controller part, wherein the motor entity part comprises a stator component, an external rotor component, a rotating shaft and a base, the controller part comprises a controller and a control circuit board integrated with an electronic device, the middle part of the base extends downwards out of a sleeve seat, the rotating shaft is positioned in the sleeve seat and supported on bearings at two ends of the sleeve seat, the stator component is sleeved outside the sleeve seat, the rotating shaft and the external rotor component are connected together, the external rotor component is nested outside the stator component, the controller is arranged on the top surface of the base, the control circuit board is positioned in a cavity of the controller and arranged on the top surface of the base, as a bearing chamber at the bottom of the base is communicated with the cavity of the controller, dust and water vapor generated in the bearing chamber can directly enter the controller to contact the control circuit board, and finally the control circuit board is damaged, the normal operation of motor is influenced, and sealed effect is poor, and the heat radiation structure of this controller is imperfect in addition, and the radiating effect is poor.
The invention content is as follows:
the utility model aims at providing an external rotor electric machine, the dust and the steam that can solve the indoor production of bearing among the prior art can directly enter into the controller in contact with the control scheme board, finally lead to the control scheme board to damage, influence the normal operating of motor, and the heat radiation structure of sealed effect difference and controller is imperfect, the poor technical problem of radiating effect.
The purpose of the utility model is realized by the following technical scheme.
The utility model aims at providing an external rotor electric machine, including motor and controller, wherein:
the motor comprises a rotating shaft, a stator component, an outer rotor and a sleeve seat, wherein the sleeve seat comprises a bottom plate and a sleeve protruding upwards from the middle of the bottom plate;
the controller comprises a shell and a circuit board, wherein the shell is arranged on the bottom surface of the bottom plate, and the circuit board is arranged between the shell and the bottom plate;
the method is characterized in that: the edge of the bottom plate axially extends downwards to form an annular flange, the bottom plate and the flange enclose a cavity, a heat dissipation platform protrudes from the partial bottom surface of the bottom plate, an opening of the second bearing chamber is communicated with the cavity, an insulating seat covering the second bearing chamber is arranged at the opening of the second bearing chamber, a heat conduction insulating sheet is paved on the heat dissipation platform, the circuit board is installed in the cavity, and an electronic power heating device on the circuit board supports the heat conduction insulating sheet to transfer heat to the heat dissipation platform.
And an insulating plate extends out of the outer side of the insulating seat and covers the bottom surface of the bottom plate staggered with the heat dissipation platform.
The insulating seat comprises a cover plate and a cylinder axially extending from the edge of the cover plate, the insulating plate is arranged on the outer surface of the cylinder, when the insulating seat is arranged at the opening of the second bearing chamber, the end part of the cylinder of the insulating seat is embedded into the second bearing chamber, and the cover plate covers the opening of the second bearing chamber.
The bottom surface of the bottom plate staggered with the heat dissipation platform is provided with a plurality of first reinforcing ribs, and the insulating plate of the insulating base is supported on the end surface of the first reinforcing ribs.
The stator module comprises a stator core, an end insulation and a coil winding, wherein the end insulation is provided with a plurality of wiring terminals, the wiring terminals are electrically connected with the coil winding, the heat dissipation platform is provided with a plurality of terminal holes, and the end parts of the wiring terminals extend out of the terminal holes of the heat dissipation platform and are electrically connected with the circuit board.
And a plurality of second reinforcing ribs are arranged on the top surface of the bottom plate corresponding to the heat dissipation platform.
The outer side wall of the flange is provided with heat dissipation ribs distributed at intervals in the circumferential direction.
The inside wall of flange on be equipped with a plurality of mount pads, be equipped with a plurality of first mounting holes on the mount pad, be equipped with a plurality of second mounting holes that correspond with first mounting hole on the casing of controller, pass the second mounting hole through the screw and be connected with the cooperation of first mounting hole, make casing fixed mounting at the bottom plate.
Compared with the prior art, the utility model, following effect has:
1) an external rotor electric machine comprising an electric machine and a controller, wherein: the motor comprises a rotating shaft, a stator component, an outer rotor and a sleeve seat, wherein the sleeve seat comprises a bottom plate and a sleeve protruding upwards from the middle of the bottom plate; the controller comprises a shell and a circuit board, the shell is arranged on the bottom surface of the bottom plate, and the circuit board is arranged between the shell and the bottom plate; the method is characterized in that: an annular flange axially extends downwards from the edge of the bottom plate, the bottom plate and the flange enclose a cavity, a heat dissipation platform protrudes from part of the bottom surface of the bottom plate, an opening of the second bearing chamber is communicated with the cavity, an insulating seat for covering the second bearing chamber is arranged at the opening of the second bearing chamber, a heat-conducting insulating sheet is laid on the heat-radiating platform, the circuit board is arranged in the cavity, the electronic power heating device on the circuit board is abutted against the heat-conducting insulating sheet to transfer heat to the heat-radiating platform, the insulation between the interior of the motor and the interior of the controller is realized through the insulation seat structure, the dust or water vapor of the second bearing chamber is effectively prevented from entering the shell to be contacted with the circuit board, the sealing effect between the motor and the controller is ensured, the sealing effect is good, meanwhile, the radiating platform is structurally arranged, so that the radiating effect of a high-power device on the circuit board can be ensured to be good, and the radiating requirement of a high-power motor is met.
2) Other advantages of the present invention will be 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 a partial exploded view provided by the present invention;
fig. 6 is an exploded schematic view provided by the present invention;
fig. 7 is a schematic view of the base structure provided by the present invention;
fig. 8 is a schematic view of a stator assembly structure provided by the present invention;
fig. 9 is a schematic view of the structure of the insulating base provided by the present invention.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 to 9, the present embodiment provides an external rotor motor including a motor 100 and a controller 200, wherein:
the motor 100 comprises a rotating shaft 1, a stator assembly 2, an outer rotor 3 and a sleeve seat 4, wherein the sleeve seat 4 comprises a bottom plate 41 and a sleeve 42 protruding upwards from the middle of the bottom plate 41, two ends of the sleeve 42 are respectively provided with a first bearing chamber 421 and a second bearing chamber 422, the first bearing chamber 421 and the second bearing chamber 422 are both provided with bearings 43, the rotating shaft 1 is positioned inside the sleeve 42, two ends of the rotating shaft support the bearings 43, the rotating shaft is sleeved outside the stator assembly sleeve 42, and the outer rotor 3 is sleeved outside the stator assembly 2;
the controller 200 includes a housing 201 and a circuit board 202, the housing 201 is mounted on the bottom surface of the bottom plate 41, and the circuit board 202 is mounted between the housing 201 and the bottom plate 41;
the method is characterized in that: an annular flange 411 axially extends downwards from the edge of the base plate 41, the base plate 41 and the flange 411 enclose a cavity 410, a heat dissipation platform 412 protrudes from part of the bottom surface of the base plate 41, an opening of the second bearing chamber 422 is communicated with the cavity 410, an insulating seat 5 which covers the second bearing chamber 422 is arranged at the opening of the second bearing chamber 422, a heat conduction insulating sheet 413 is laid on the heat dissipation platform 412, the circuit board 202 is installed in the cavity 410, an electronic power heating device on the circuit board 202 abuts against the heat conduction insulating sheet 413 to transfer heat to the heat dissipation platform 412, the insulation between the interior of the motor and the interior of the controller is realized through an insulating seat structure, dust or water vapor in the second bearing chamber is effectively prevented from entering the shell and contacting the circuit board, the sealing effect between the motor and the controller is ensured, the sealing effect is good, and meanwhile, the heat dissipation effect of a high-power device on the circuit board can be ensured through the structural arrangement of the heat dissipation platform, the heat dissipation requirement of the high-power motor is met.
An insulating plate 50 extends out of the insulating base 5, and the insulating plate 50 covers the bottom surface of the bottom plate 41 staggered from the heat dissipation platform 412, so that the insulating effect between the control circuit board and the motor is improved.
The insulating base 5 comprises a cover plate 51 and a cylinder 52 axially extending from the edge of the cover plate 51, the insulating plate 50 is arranged on the outer surface of the cylinder 52, when the insulating base 5 is arranged at the opening of the second bearing chamber 422, the end part of the cylinder 52 of the insulating base 5 is embedded into the second bearing chamber 422, and the cover plate 51 covers the opening of the second bearing chamber 422, so that the structure is simple.
The bottom surface of the bottom plate 41 staggered from the heat dissipation platform 412 is provided with a plurality of first reinforcing ribs 414, and the insulating plate 50 of the insulating base 5 is supported on the end surfaces of the first reinforcing ribs 414, so that the structural strength of the bottom plate is enhanced.
A plurality of second reinforcing ribs 414 are disposed on the top surface of the bottom plate 41 corresponding to the heat dissipation platform 412, so as to enhance the structural strength of the bottom plate.
The outer side wall of the flange 411 is provided with heat dissipation ribs 4111 distributed at intervals in the circumferential direction, so that the heat dissipation effect is improved.
The inner side wall of the flange 411 is provided with a plurality of mounting seats 415, the mounting seats 415 are provided with a plurality of first mounting holes 4151, the shell 201 of the controller 200 is provided with a plurality of second mounting holes 203 corresponding to the first mounting holes 4151, and the second mounting holes 203 are matched and connected with the first mounting holes 4151 through screws, so that the shell 201 is fixedly mounted on the bottom plate 41, and the mounting structure is simple.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (8)
1. An external rotor electric machine comprising an electric machine (100) and a controller (200), wherein:
the motor (100) comprises a rotating shaft (1), a stator assembly (2), an outer rotor (3) and a sleeve seat (4), wherein the sleeve seat (4) comprises a bottom plate (41) and a sleeve (42) protruding upwards from the middle of the bottom plate (41), two ends of the sleeve (42) are respectively provided with a first bearing chamber (421) and a second bearing chamber (422), bearings (43) are respectively arranged in the first bearing chamber (421) and the second bearing chamber (422), the rotating shaft (1) is positioned in the sleeve (42) and two ends of the rotating shaft support the bearings (43), the stator assembly is sleeved outside the sleeve (42), and the outer rotor (3) is sleeved outside the stator assembly (2);
the controller (200) comprises a shell (201) and a circuit board (202), wherein the shell (201) is installed on the bottom surface of the bottom plate (41), and the circuit board (202) is installed between the shell (201) and the bottom plate (41);
the method is characterized in that: the edge of the base plate (41) axially extends downwards to form an annular flange (411), a cavity (410) is enclosed by the base plate (41) and the flange (411), a heat dissipation platform (412) protrudes from the partial bottom surface of the base plate (41), an opening of the second bearing chamber (422) is communicated with the cavity (410), an insulating seat (5) which covers the second bearing chamber (422) is arranged at the opening of the second bearing chamber (422), a heat conduction insulating sheet (413) is laid on the heat dissipation platform (412), the circuit board (202) is installed in the cavity (410), and an electronic power heating device on the circuit board (202) abuts against the heat conduction insulating sheet (413) to transfer heat to the heat dissipation platform (412).
2. The external rotor electric machine according to claim 1, wherein: an insulating plate (50) extends out of the outer side of the insulating base (5), and the insulating plate (50) covers the bottom surface of the bottom plate (41) staggered with the heat dissipation platform (412).
3. The external rotor electric machine according to claim 2, wherein: insulating seat (5) include apron (51) and cylinder (52) that extend out from apron (51) edge axial, and insulating board (50) set up on cylinder (52) surface, and when insulating seat (5) were installed at the opening part of second bearing room (422), cylinder (52) tip embedding second bearing room (422) of insulating seat (5) were gone into, and the opening of second bearing room (422) is covered in apron (51).
4. An external rotor electric machine according to claim 1, 2 or 3, wherein: the bottom surface of the bottom plate (41) staggered with the heat dissipation platform (412) is provided with a plurality of first reinforcing ribs (414), and the insulating plate (50) of the insulating base (5) is supported on the end surfaces of the first reinforcing ribs (414).
5. The external rotor electric machine according to claim 4, wherein: stator module (2) are including stator core (21), tip insulation (22) and coil winding (23), install a plurality of binding post (24) on tip insulation (22), binding post (24) are connected together with coil winding (23) electricity, are equipped with a plurality of terminal hole (4121) on heat dissipation platform (412), and the tip of binding post (24) stretches out from terminal hole (4121) of heat dissipation platform (412) and is connected with circuit board (202) electricity.
6. The external rotor electric machine according to claim 5, wherein: a plurality of second reinforcing ribs (414) are arranged on the top surface of the bottom plate (41) at positions corresponding to the heat dissipation platform (412).
7. The external rotor electric machine according to claim 6, wherein: the outer side wall of the flange (411) is provided with heat dissipation ribs (4111) which are distributed at intervals in the circumferential direction.
8. An external rotor electric machine as claimed in claim 7, wherein: be equipped with a plurality of mount pads (415) on the inside wall of flange (411), be equipped with a plurality of first mounting hole (4151) on mount pad (415), be equipped with a plurality of second mounting hole (203) that correspond with first mounting hole (4151) on casing (201) of controller (200), pass second mounting hole (203) through the screw and be connected with first mounting hole (4151) cooperation, make casing (201) fixed mounting at bottom plate (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220477241.5U CN217135271U (en) | 2022-03-07 | 2022-03-07 | External rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220477241.5U CN217135271U (en) | 2022-03-07 | 2022-03-07 | External rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217135271U true CN217135271U (en) | 2022-08-05 |
Family
ID=82642943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220477241.5U Active CN217135271U (en) | 2022-03-07 | 2022-03-07 | External rotor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217135271U (en) |
-
2022
- 2022-03-07 CN CN202220477241.5U patent/CN217135271U/en active Active
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