CN218472900U - External rotor motor capable of preventing metal debris from entering controller - Google Patents

Abstract

The utility model discloses a can prevent external rotor electric machine of metal debris entering controller, including motor monomer and controller, the motor monomer includes stator module, the external rotor and the metal sleeve seat of stator module outside are located to the cover, the metal sleeve seat includes the end plate and rises in the sleeve of end plate intermediate position to the top, the sleeve outside is located to the stator module cover, the controller includes control box and the circuit board of installing in the control box, the border position of end plate is outstanding downwards and is had annular boss, annular boss supports on the terminal surface of control box, set up a plurality of circumference interval distribution's screw on the annular boss, set up a plurality of through-holes that correspond with the screw on the control box, adopt after the screw passes the through-hole with screw threaded connection in order to install metal sleeve seat and control box together, be provided with a plurality of chambeies of accomodating in annular boss and control box's junction, a plurality of chambeies correspond with a plurality of screws, accomodate the chamber and be used for collecting the metal debris that screw produced when coordinating.

Description

External rotor motor capable of preventing metal debris from entering controller

The technical field is as follows:

the utility model relates to a can prevent that metal debris from getting into external rotor electric machine of controller.

Background art:

the existing external rotor motor comprises a motor monomer and a controller, wherein the motor monomer comprises a stator component, an external rotor sleeved outside the stator component and a sleeve seat, the sleeve seat comprises an end plate and a sleeve which protrudes upwards from the middle position of the end plate, the stator component is sleeved outside the sleeve, the controller comprises a control box and a circuit board arranged in the control box, the edge position of the end plate protrudes downwards to form an annular boss, the annular boss is supported on the end surface of the control box, a plurality of screw holes which are circumferentially distributed at intervals are formed in the annular boss, a plurality of through holes which correspond to the screw holes are formed in the control box, and the sleeve seat and the control box are installed together by adopting threaded connection of screws which penetrate through the through holes and the screw holes through screws, so that the stability of the integral structure of the motor is ensured; when adopting the screw assembly, the screw can produce the metal piece with the screw cooperation of cover barrel seat, the metal piece can drop on the terminal surface of control box, but at present, because the annular boss and the control box junction of cover barrel seat, the position that corresponds the screw does not set up and is used for accomodating the structure of metal piece, before cover barrel seat and control box locking, the metal piece can remove on the terminal surface of control box, and when the equipment motor, for conveniently accomplishing the equipment of motor, often need to swing certain angle with the motor, because the metal piece can remove on the terminal surface of control box, make the swing in-process at the motor, the metal piece can drop in the control box, can cause the circuit board short circuit to lead to the motor to burn out when serious.

The invention content is as follows:

the utility model aims at providing a can prevent that metallic debris from getting into external rotor electric machine of controller, the annular boss that can solve the cover barrel seat among the prior art and the junction of control box, the position that corresponds the screw do not set up and be used for accomodating metallic debris's structure for at the swing in-process of motor, metallic debris can drop in the control box, can cause the technical problem that the circuit board short circuit leads to the motor to burn out when serious.

The purpose of the utility model is realized by the following technical scheme.

The utility model aims at providing a can prevent external rotor electric machine of metal debris entering control ware, including motor monomer and controller, the motor monomer includes stator module, the external rotor and the metal sleeve seat of stator module outside are located to the cover, the metal sleeve seat includes the end plate and the sleeve that rises in the end plate intermediate position to the top, the sleeve outside is located to the stator module cover, the controller includes control box and the circuit board of installing in the control box, the border position of end plate is downward outstanding to have annular boss, annular boss supports on the terminal surface of control box, set up a plurality of circumference interval distribution's screw on the annular boss, set up a plurality of through-holes that correspond with the screw on the control box, adopt the screw to pass behind the through-hole with screw threaded connection in order to install metal sleeve seat and control box together, be provided with a plurality of chambeies of accomodating in annular boss and control box's junction, a plurality of accomodating the chambeies correspond with a plurality of screws, accomodate the chamber and be used for collecting the metal debris that screw produced when cooperating.

Preferably, the containing cavity comprises a first counter bore arranged on the annular boss and a second counter bore arranged on the control box, the first counter bore corresponds to the second counter bore, the first counter bore is located at the inlet end of the screw hole, the second counter bore is located at the outlet end of the through hole, and when the metal sleeve seat is installed on the control box, the first counter bore and the second counter bore mutually enclose the containing cavity.

Preferably, the first counterbore and the second counterbore are tapered holes.

Preferably, the maximum aperture of the second counterbore is larger than the maximum aperture of the first counterbore.

Preferably, a sealing ring is arranged between the metal sleeve seat and the control box.

Preferably, the stator assembly includes a stator core, end insulators and coil windings, and the end insulators are mounted at both ends of the stator core and then wound around the coil windings.

Preferably, bearing chambers are arranged at two ends of the sleeve, bearings are installed in the bearing chambers, a rotating shaft is supported on the bearings, the outer rotor comprises a shell and a plurality of permanent magnets installed on the inner wall surface of the shell, and one end of the rotating shaft extends out of the sleeve to be connected with the shell.

Preferably, a flange is mounted on the outer surface of the casing sleeve.

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

1) The utility model provides a can prevent external rotor electric machine of metal piece entering controller, be provided with a plurality of chambeies of accomodating through the junction at annular boss and control box, a plurality of chambeies of accomodating correspond with a plurality of screws, accomodate the chamber and collect screw and screw produced metal piece when cooperating, avoid metal piece to drop on the terminal surface of control box, make before with cover cylinder seat and control box locking, even swing motor, metal piece can not drop in the control box yet, can avoid having the risk that causes the short circuit because metal piece and circuit board contact, thereby protect the motor better.

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

Description of the drawings:

fig. 1 is a schematic perspective view of an external rotor motor according to the present invention;

fig. 2 is a schematic bottom view of the external rotor motor according to the present invention;

FIG. 3 isbase:Sub>A schematic cross-sectional view A-A of FIG. 2;

fig. 4 is an enlarged structural view of a portion B provided for fig. 3.

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.

As shown in fig. 1 to 3, the present embodiment provides an external rotor motor capable of preventing metal debris from entering a controller, including a motor unit 100 and a controller 200, where the motor unit 100 includes a stator assembly 1, an external rotor 2 sleeved outside the stator assembly 1, and a metal sleeve holder 3, the metal sleeve holder 3 includes an end plate 31 and a sleeve 32 protruding upward from a middle position of the end plate 31, the stator assembly 1 is sleeved outside the sleeve 32, the stator assembly 1 includes a stator core 11, an end insulator 12, and a coil winding 13, the end insulator 12 is mounted at two ends of the stator core 11 and then winds the coil winding 13, two ends of the sleeve 32 are provided with bearing chambers 321, bearings 20 are mounted in the bearing chambers 321, a rotating shaft 30 is supported on the bearings 20, the external rotor 2 includes a casing 21 and a plurality of permanent magnets 22 mounted on an inner wall surface of the casing 21, one end of the rotating shaft 30 extends out of the sleeve 32 and is connected with the casing 21, a flange 40 is mounted on an outer surface of the casing 21, the flange 40 is used for mounting the motor on a load, and the flange 40 can be welded and fixed to the casing 21.

As shown in fig. 1 to 4, the controller 200 includes a control box 4 and a circuit board 5 installed in the control box 4, an annular boss 33 protrudes downward from an edge position of the end plate 31, the annular boss 33 is supported on an end surface of the control box 4, a plurality of screw holes 6 are formed in the annular boss 33, the control box 4 is provided with a plurality of through holes 7 corresponding to the screw holes 6, screws 8 are threaded into the screw holes 6 after passing through the through holes 7 to install the metal sleeve seat 3 and the control box 4 together, a plurality of accommodating cavities 9 are formed at a joint of the annular boss 33 and the control box 4, the plurality of accommodating cavities 9 correspond to the plurality of screw holes 6, the accommodating cavities 9 are used for collecting metal debris generated when the screws 8 are matched with the screw holes 6, and preventing the metal debris from falling onto an end surface of the control box 4, so that the metal debris cannot fall into the control box 4 even if the motor is swung before the sleeve 32 seat and the control box 4 are locked, and the risk of short circuit caused by contact of the metal debris with the circuit board 5 can be avoided, thereby better protecting the motor.

As shown in fig. 4, the receiving cavity 9 includes a first counter bore 91 disposed on the annular boss 33 and a second counter bore 92 disposed on the control box 4, the first counter bore 91 corresponds to the second counter bore 92, the first counter bore 91 is located at an inlet end of the screw hole 6, the second counter bore 92 is located at an outlet end of the through hole 7, and when the metal sleeve holder 3 is mounted on the control box 4, the first counter bore 91 and the second counter bore 92 mutually enclose the receiving cavity 9; it should be noted that, in this embodiment, the inlet end of the screw hole 6 refers to an end where the threaded section of the screw 8 enters the screw hole 6, and the outlet end of the through hole 7 refers to an end where the threaded section of the screw 8 penetrates through the through hole 7.

As shown in fig. 4, the first counterbore 91 and the second counterbore 92 are preferably tapered holes, which are easy to machine.

As shown in FIG. 4, the maximum aperture of the second counterbore 92 is larger than that of the first counterbore 91, and the design is reasonable, so that all metal debris can be collected.

As shown in fig. 4, a sealing ring 10 is disposed between the metal sleeve seat 3 and the control box 4, so that the sealing performance of the motor can be improved.

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. The utility model provides a can prevent external rotor electric machine of metal debris entering controller, including motor monomer (100) and controller (200), motor monomer (100) include stator module (1), outer rotor (2) and metal sleeve seat (3) of stator module (1) outside are located to the cover, metal sleeve seat (3) include end plate (31) and upwards bulge in sleeve (32) of end plate (31) intermediate position, sleeve (32) outside is located in stator module (1) cover, controller (200) are including control box (4) and circuit board (5) of installing in control box (4), the border position of end plate (31) is outstanding downwards and is had annular boss (33), annular boss (33) support is on the terminal surface of control box (4), set up a plurality of circumference interval distribution's screw (6) on annular boss (33), set up a plurality of through-holes (7) that correspond with screw (6) on control box (4), adopt screw (8) pass behind through-hole (7) with screw (6) threaded connection in order to install metal sleeve seat (3) and control box (4) together, its characterized in that: the joint of the annular boss (33) and the control box (4) is provided with a plurality of accommodating cavities (9), the accommodating cavities (9) correspond to the screw holes (6), and the accommodating cavities (9) are used for collecting metal scraps generated when the screws (8) are matched with the screw holes (6).

2. The external rotor motor capable of preventing metal debris from entering the controller according to claim 1, wherein: accomodate chamber (9) including setting up first counter bore (91) on annular boss (33) and setting are in second counter bore (92) on control box (4), first counter bore (91) correspond with second counter bore (92), and first counter bore (91) are located the entry end of screw (6), and second counter bore (92) are located the exit end of through-hole (7), work as when metal sleeve seat (3) are installed when controlling box (4), first counter bore (91) and second counter bore (92) enclose each other accomodate chamber (9).

3. The external rotor motor capable of preventing the metal debris from entering the controller according to claim 2, wherein: the first counterbore (91) and the second counterbore (92) are both tapered holes.

4. The external rotor motor capable of preventing metal debris from entering the controller according to claim 3, wherein: the maximum aperture of the second counterbore (92) is larger than the maximum aperture of the first counterbore (91).

5. An external rotor motor for preventing metal debris from entering a controller according to claim 1, 2, 3 or 4, wherein: and a sealing ring (10) is arranged between the metal sleeve seat (3) and the control box (4).

6. The external rotor motor capable of preventing metal debris from entering the controller according to claim 5, wherein: stator module (1) is including stator core (11), tip insulation (12) and coil winding (13), and winding coil winding (13) behind stator core (11) both ends are installed in tip insulation (12).

7. The external rotor motor capable of preventing metal debris from entering the controller according to claim 6, wherein: the two ends of the sleeve (32) are provided with bearing chambers (321), the bearings (20) are installed in the bearing chambers (321), the rotating shaft (30) is supported on the bearings (20), the outer rotor (2) comprises a machine shell (21) and a plurality of permanent magnets (22) installed on the inner wall surface of the machine shell (21), and one end of the rotating shaft (30) extends out of the sleeve (32) to be connected with the machine shell (21).

8. The external rotor motor capable of preventing metal debris from entering the controller according to claim 7, wherein: and a flange (40) is arranged on the outer surface of the casing (21) sleeve.

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