External rotor motor

Abstract

The utility model discloses an external rotor motor which comprises a motor and a controller, and 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. The stator assembly further comprises a supporting frame and a plurality of sealing plugs, the supporting frame is provided with a plurality of first through holes allowing the wiring terminals to penetrate through, the sealing plugs are provided with second through holes allowing the wiring terminals to penetrate through, the supporting frame is installed on the end insulation, and the sealing plugs are installed on the supporting frame. The end portion of the wiring terminal sequentially penetrates through the first through hole, the second through hole and the terminal hole to extend out, when the stator assembly is sleeved outside the sleeve, the sealing plug is extruded between the stator assembly and the bottom plate to deform so as to achieve sealing, failure of a circuit board in the controller caused by water inflow is effectively prevented, the possibility of failure of the motor is reduced, and the service life of the motor is prolonged. The waterproof grade of the motor is enhanced, and new industrial requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to an outer rotor motor. BACKGROUND

[0002] The prior art outer rotor motor comprises a motor and a controller, 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, the stator assembly comprises a stator core, an end insulation and a coil winding, a plurality of terminal posts are installed on the end insulation, the terminal posts are electrically connected together with the coil winding, the sleeve seat comprises a bottom plate and a sleeve protruding upward from the middle of the bottom plate, bearing chambers are formed at both ends of the sleeve, the control box is installed on the bottom surface of the bottom plate, a plurality of terminal holes are formed in the bottom plate, the terminal posts are extended from the terminal holes of the bottom plate and electrically connected with the circuit board of the controller, the stator assembly and the circuit board are not sealed in the prior motor structure, water may enter the circuit board in long-term operation, which may cause the motor to fail and finally cannot meet the industry demand. SUMMARY

[0003] The utility model discloses an outer rotor motor, which solves the technical problem that the stator assembly and the circuit board are not sealed in the prior art, water may enter the circuit board in long-term operation, which may cause the motor to fail and finally cannot meet the industry demand.

[0004] The technical scheme of the utility model is as follows:

[0005] The utility model provides an outer rotor motor, including motor and controller, wherein: the controller includes control box and circuit board, the motor includes rotating shaft, stator assembly, outer rotor and sleeve seat, the stator assembly includes stator core, end insulation and coil winding, a plurality of terminal posts are installed on the end insulation, the terminal post is electrically connected together with the coil winding, the sleeve seat includes bottom plate and the sleeve that protrudes upward from the middle of bottom plate, bearing chamber is established at both ends of the sleeve, the control box is installed on the bottom surface of the bottom plate, a plurality of terminal holes are formed in the bottom plate, the terminal post is extended from the terminal hole of the bottom plate and is electrically connected with the circuit board of the controller, and the outer rotor is sleeved on the outside of the stator assembly, characterized in that: the stator assembly further includes support frame and a plurality of sealing plugs, a plurality of first through holes for the terminal post to pass through are formed in the support frame, a plurality of second through holes for the terminal post to pass through are formed in the sealing plug, the support frame is installed on the end insulation, the sealing plug is installed on the support frame, the terminal post is extended out in sequence through the first through hole, the second through hole and the terminal hole, when the stator assembly is sleeved on the outside of the sleeve, the sealing plug is deformed to realize sealing under the extrusion between the stator assembly and the bottom plate.

[0006] The sealing plug comprises a plug pad, a plurality of annular flanges protruding from one end surface of the plug pad, an annular boss protruding from the other end surface of the plug pad, a second through hole penetrating the plug pad and located between the annular flanges and the annular boss, and the annular boss is embedded in the first through hole of the support frame, and the plurality of annular flanges abut against the top surface of the bottom plate.

[0007] The sealing plug comprises a plug pad, a plurality of annular flanges protruding from one end surface of the plug pad, an annular boss protruding from the other end surface of the plug pad, a second through hole penetrating the plug pad and located between the annular flanges and the annular boss, and the annular boss is embedded in the first through hole of the support frame, and the plurality of annular flanges abut against the top surface of the bottom plate.

[0008] The sealing plug is integrally made of insulating material.

[0009] The end insulation comprises a yoke insulation and a plurality of tooth insulations, the end surface of the tooth head of the tooth insulation is provided with a mounting boss, the mounting boss is provided with a plug hole, the tail of the terminal is plugged into the plug hole, and the yoke insulation is provided with an annular protrusion.

[0010] The support frame comprises a support plate, a plurality of first through holes are arranged on the support plate, a first support boss is arranged on the inner side edge of the support plate, a plurality of second support bosses are arranged on the outer side edge of the support plate, the second support bosses and the first through holes are arranged alternately, the second support bosses are supported on the tooth insulations, and the first support boss is supported on the annular protrusion.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. An outer rotor motor, comprising 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, the stator assembly comprises a stator core, an end insulation and a coil winding, a plurality of terminal ends are mounted on the end insulation, the terminal ends are electrically connected together 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 formed in the two ends of the sleeve, the control box is mounted on the bottom surface of the bottom plate, a plurality of terminal holes are formed in the bottom plate, the terminal ends are arranged to protrude from the terminal holes of the bottom plate and electrically connected with the circuit board of the controller, and the outer rotor is sleeved outside the stator assembly; the stator assembly further comprises a support frame and a plurality of sealing plugs, a plurality of first through holes are formed in the support frame and can be passed through by the terminal ends, a second through hole is formed in the sealing plug and can be passed through by the terminal ends, the support frame is mounted on the end insulation, the sealing plug is mounted on the support frame, the terminal ends are arranged to protrude from the first through holes, the second through holes and the terminal holes in sequence, when the stator assembly is sleeved outside the sleeve, the sealing plug is deformed to realize sealing under the extrusion between the stator assembly and the bottom plate, water inflow is effectively prevented to cause the circuit board in the controller to be invalid, the possibility of motor failure is reduced, the waterproof level of the motor is enhanced, and the new requirements of the industry are met.

[0013] 2、 The other advantages of the utility model are described in detail in the embodiment part of the description. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A perspective view is provided for the utility model embodiment one;

[0015] Figure 2 A partial exploded view is provided for the utility model embodiment one;

[0016] Figure 3 Another angle partial exploded view is provided for the utility model embodiment one;

[0017] Figure 4 A partial structure schematic view is provided for the utility model embodiment one;

[0018] Figure 5 A structure schematic view is provided for the utility model embodiment one;

[0019] Figure 6 A top view is provided for the utility model embodiment one;

[0020] Figure 7 A section view is provided for Figure 6 A-A;

[0021] Figure 8 A sealing plug perspective view is provided for the utility model embodiment one;

[0022] Figure 9 Another angle sealing plug perspective view is provided for the utility model embodiment one;

[0023] Figure 10 A section view is provided for the utility model embodiment two;

[0024] Figure 11 A sealing plug perspective view is provided for the utility model embodiment two;

[0025] Figure 12 Another angle sealing plug perspective view is provided for the utility model embodiment two. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model embodiments more clear, the technical scheme in the utility model embodiments will be described clearly and completely in conjunction with the drawings in the utility model embodiments, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model. Embodiment one:

[0027] As shown in Figures 1 to 9 The embodiment provides an outer rotor motor which comprises 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 base 4, 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 and electrically connected with the coil winding 23 together, the sleeve base 4 comprises a bottom plate 41 and a sleeve 42 which is protruded upwards from the middle of the bottom plate 41, bearing chambers 421 are formed at two ends of the sleeve 42, the control box 201 is installed on the bottom surface of the bottom plate 41, a plurality of terminal holes 411 are formed on the bottom plate 41, the end portions of the connecting terminals 24 are extended from the terminal holes 411 of the bottom plate 41 and electrically connected with the circuit board 202 of the controller 200, and the outer rotor 3 is sleeved outside the stator assembly 2; characterized in that the stator assembly 2 further comprises a support frame 25 and a plurality of sealing plugs 26, a plurality of first through holes 250 are formed on the support frame 25 and used for allowing the connecting terminals 24 to pass through, second through holes 260 are formed on the sealing plugs 26 and used for allowing the connecting terminals 24 to pass through, the support frame 25 is installed on the end insulation 22, the sealing plugs 26 are installed on the support frame 25, the end portions of the connecting terminals 24 are sequentially extended through the first through holes 250, the second through holes 260 and the terminal holes 411, and when the stator assembly 2 is sleeved outside the sleeve 42, the sealing plugs 26 are deformed to realize sealing under the extrusion between the stator assembly 2 and the bottom plate 41, water inflow is effectively prevented to cause the circuit board in the controller to fail, the possibility of motor failure is reduced, the waterproof level of the motor is enhanced, and the new requirements of the industry are met.

[0028] The sealing plug 26 comprises a plug pad 261, a plurality of annular flanges 262 are protruded from one end surface of the plug pad 261, an annular boss 263 is protruded from the other end surface of the plug pad 261, the second through holes 260 pass through the plug pad 261 and are located between the annular flanges 262 and the annular boss 263, the annular boss 263 is embedded in the first through holes 250 of the support frame 25, and the plurality of annular flanges 262 abut against the top surface of the bottom plate 41, so that the structure arrangement is simple and reasonable.

[0029] The sealing plug 26 is integrally manufactured from insulating material, and manufacturing is convenient.

[0030] The end insulation 22 comprises a yoke insulation 221 and a plurality of tooth insulations 222, an installation boss 2222 is arranged on the end surface of a tooth head portion 2221 of the tooth insulation 222, a plug hole 2223 is arranged on the installation boss 2222, the tail portion of the connecting terminal 24 is plug-mounted in the plug hole 2223, and an annular protruding portion 2211 is protruded from the middle of the yoke insulation 221, so that the structure arrangement is reasonable.

[0031] The support frame 25 comprises a support plate 251, a plurality of first through holes 250 are arranged on the support plate 251, the inner side edge of the support plate 251 is provided with a first support boss 252, the outer side edge of the support plate 251 is provided with a plurality of second support bosses 253, the plurality of second support bosses 253 are staggered between the plurality of first through holes 250, the second support bosses 253 are supported on the tooth portion insulation 222, the support plate 251 is supported on the annular convex portion 2211, and the first support boss 252 is attached to the inner side of the annular convex portion 2211.

[0032] Embodiment two: as shown in the embodiment, the embodiment is further improved on the basis of embodiment one, and the support frame 25 comprises a support plate 251, a plurality of first through holes 250 are arranged on the support plate 251, the inner side edge of the support plate 251 is provided with a first support boss 252, the outer side edge of the support plate 251 is provided with a plurality of second support bosses 253, the plurality of second support bosses 253 are staggered between the plurality of first through holes 250, the second support bosses 253 are supported on the tooth portion insulation 222, the support plate 251 is supported on the annular convex portion 2211, and the first support boss 252 is attached to the inner side of the annular convex portion 2211. Figures 10 to 12

[0033] The sealing plug 26 comprises a plug pad 261, a plurality of annular flanges 262 are protruded on one end surface of the plug pad 261, an inner side of the innermost annular flange 262 is protruded with a boss 264, a second through hole 260 penetrates through the plug pad 261 and the boss 264, the boss 264 is embedded in the terminal hole 411 of the bottom plate 41, and the plurality of annular flanges 262 abut against the top surface of the bottom plate 41.

[0034] The above embodiment is a preferred embodiment of the utility model, but the embodiment of the utility model is not limited to this, and any change, modification, replacement, combination and simplification without departing from the spirit and principle of the utility model are equivalent replacement modes, and all are included in the protection scope of the utility model.​

Claims

1. An outer 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 base (4), the stator assembly (2) comprises a stator core (21), an end insulation (22) and a coil winding (23), a plurality of terminal posts (24) are mounted on the end insulation (22) and electrically connected with the coil winding (23) together, the sleeve base (4) comprises a bottom plate (41) and a sleeve (42) protruding upward from the middle of the bottom plate (41), bearing chambers (421) are formed at both ends of the sleeve (42), the control box (201) is mounted on the bottom surface of the bottom plate (41), a plurality of terminal holes (411) are formed on the bottom plate (41), the terminal posts (24) extend out of the terminal holes (411) of the bottom plate (41) and are electrically connected with the circuit board (202) of the controller (200), and the outer rotor (3) is sleeved outside the stator assembly (2); characterized in that the stator assembly (2) further comprises a support frame (25) and a plurality of sealing plugs (26), the support frame (25) is provided with a plurality of first through holes (250) through which the terminal posts (24) pass, the sealing plugs (26) are provided with second through holes (260) through which the terminal posts (24) pass, the support frame (25) is mounted on the end insulation (22), the sealing plugs (26) are mounted on the support frame (25), the terminal posts (24) extend out of the first through holes (250), the second through holes (260) and the terminal holes (411) in sequence, and when the stator assembly (2) is sleeved outside the sleeve (42), the sealing plugs (26) are deformed to realize sealing under the extrusion between the stator assembly (2) and the bottom plate (41). The sealing plug (26) comprises a plug pad (261), a plurality of annular flanges (262) are protruded from one end surface of the plug pad (261), an annular boss (263) is protruded from the other end surface of the plug pad (261), the second through hole (260) penetrates the plug pad (261) and is located between the annular flanges (262) and the annular boss (263), the annular boss (263) is embedded in the first through hole (250) of the support frame (25), and the plurality of annular flanges (262) abut against the top surface of the bottom plate (41).

2. An external rotor electric machine according to claim 1, characterized in that: The sealing plug (26) comprises a plug pad (261), a plurality of annular flanges (262) are protruded from one end surface of the plug pad (261), an inner side of the innermost annular flange (262) protrudes a protruding block (264), the second through hole (260) penetrates the plug pad (261) and the protruding block (264), the protruding block (264) is embedded in the terminal hole (411) of the bottom plate (41), and the plurality of annular flanges (262) abut against the top surface of the bottom plate (41).

3. An external rotor electric machine according to claim 1 or 2, characterized in that: The sealing plug (26) is integrally manufactured from insulating material.

4. An external rotor electric machine according to claim 3, characterized in that: The end insulation (22) comprises a yoke insulation (221) and a plurality of tooth insulations (222), an end surface of a tooth head (2221) of the tooth insulation (222) is provided with a mounting boss (2222), the mounting boss (2222) is provided with a plug hole (2223), a tail of a terminal (24) is inserted and mounted in the plug hole (2223), and a ring-shaped convex portion (2211) is protruded in the middle of the yoke insulation (221).

5. An external rotor electric machine according to claim 4, characterized in that: The support frame (25) comprises a support plate (251), a plurality of first through holes (250) are arranged on the support plate (251), an inner side edge of the support plate (251) is provided with a first support boss (252), an outer side edge of the support plate (251) is provided with a plurality of second support bosses (253), the plurality of second support bosses (253) are arranged staggeredly between the plurality of first through holes (250), the second support boss (253) is supported on the tooth insulation (222), and the first support boss (252) is supported on the ring-shaped convex portion (2211).

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