CN217362699U - Plastic package stator and motor using same - Google Patents

Abstract

The utility model discloses a plastic envelope stator and use its motor, the plastic envelope stator includes stator module and the plastic-sealed body, stator module includes stator core, end insulation and coil winding, end insulation installs on stator core's terminal surface, the coil winding is around locating on end insulation, still include linking bridge, linking bridge installs on end insulation, linking bridge includes the bottom plate, the protrusion has a plurality of circumference interval distribution's projection on the bottom plate, the plastic-sealed body is stator core, the coil winding, end insulation and linking bridge plastic envelope become integrative, the screw has been seted up on the projection top, the screw exposes in the top surface of plastic-sealed body and is used for locking the motor end cover, can guarantee the wholeness and the steadiness of plastic-sealed body, make the motor be difficult to appear bursting in assembly or use operation process, phenomenons such as come off, thereby can effectively improve the stability of motor BMC.

Description

Plastic package stator and motor using same

The technical field is as follows:

the utility model relates to a plastic envelope stator and use its motor.

Background art:

existing BLDC motors generally include an injection molded stator, a rotor assembly, and a tension end cap. In a common motor assembly process, an injection molding stator and a stretching end cover are generally assembled in an interference fit extrusion or screw fastening mode, and when the screw fastening mode is adopted, a screw hole is usually directly formed in a plastic packaging body of the injection molding stator, but due to the structure, the phenomena of BMC burst, falling and the like easily occur in the assembly or use operation process of the motor, so that the failure of the motor is caused, and the stability of the motor is low.

The invention content is as follows:

the utility model aims at providing a plastic envelope stator and use its motor for when solving current stator of moulding plastics and tensile end cover adoption screw fastening mode, the structure of directly seting up the screw on the plastic envelope body of the stator of moulding plastics makes the motor appear BMC easily in the assembly or use operation in-process and bursts, drops the scheduling phenomenon, leads to the inefficacy of motor, makes the technical problem that the stability of motor is low.

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

The utility model aims at providing a plastic envelope stator, including stator module and the plastic-sealed body, stator module includes stator core, end insulation and coil winding, end insulation installs on stator core's terminal surface, coil winding is around locating on end insulation, still include linking bridge, linking bridge installs on end insulation, linking bridge includes the bottom plate, the protrusion that has a plurality of circumference interval distribution on the bottom plate, the plastic-sealed body is stator core, coil winding, end insulation and linking bridge plastic envelope become integratively, the screw has been seted up on the protrusion top, the screw exposes for locking the motor end cover in the top surface of plastic-sealed body.

Preferably, the end insulation includes annular insulation yoke portion and sets up a plurality of insulating tooth portion at the inner edge of annular insulation yoke portion, and the terminal surface protrusion of annular insulation yoke portion has a plurality of circumference interval distribution's first arch, and first arch is provided with first mounting groove, the lateral wall of bottom plate radially outwards extends a plurality of circumference interval distribution's extension board, and the bottom protrusion of extension board has a plurality of second archs, and the protruding cartridge of second is in first mounting groove.

Preferably, insulating tooth portion includes root of tooth and tooth crown portion, the root of tooth connect in between the inner edge of annular insulating yoke portion and the tooth crown portion, leave the clearance between two adjacent tooth crown portions and form the second mounting groove, the bottom surface protrusion of bottom plate has a plurality of circumference interval distribution's locating plate, and the locating plate cartridge is in the second mounting groove that corresponds.

Preferably, the plurality of second protrusions and the plurality of positioning plates correspond to the plurality of convex columns on the bottom plate respectively.

Preferably, a plurality of mounting feet are arranged on the outer side wall of the plastic package body and distributed circumferentially at intervals, and first mounting holes are formed in the mounting feet.

Preferably, the end face of the plastic package body is provided with an annular protrusion for mounting a motor end cover, the plurality of protruding columns are located in the annular protrusion, and the screw holes are exposed out of the top surface of the annular protrusion.

Another object of the utility model is to provide a motor, including plastic packaging stator, rotor subassembly, pivot, bearing, front end housing and rear end housing, the plastic packaging stator suit is outside the rotor subassembly, and the rotor subassembly suit is outside the pivot, and front end housing and rear end housing are installed at plastic packaging stator both ends, and the equal protruding bearing frame that forms in middle part of front end housing and rear end housing, bearing installation are in the bearing frame, and the pivot supporting is on the bearing, the plastic packaging stator adopts the aforesaid a plastic packaging stator, a plurality of second mounting holes have been seted up on the front end housing outside the annular of the plastic packaging body terminal surface of plastic packaging stator is protruding, a plurality of second mounting holes correspond with the screw on the protruding surface of annular, make front end housing locking install on the plastic packaging stator with screw threaded connection after passing the second mounting hole through adopting the screw.

Preferably, the rear end cover and the plastic package stator are integrated through injection molding.

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

1) the utility model provides a plastic envelope stator, through plastic envelope linking bridge in the plastic envelope body, be provided with the screw that exposes in plastic envelope body top surface on the linking bridge for when the stator of moulding plastics adopts the screw fastening mode with the motor end cover, need not to set up the screw on the plastic envelope body, thereby guaranteed the wholeness and the steadiness of the plastic envelope body, make the motor be difficult to appear BMC and burst in assembly or use operation process, phenomenons such as drop, thereby can effectively improve the stability of motor.

2) Other advantages of the present invention will be described in detail in the detailed description of the embodiments.

Description of the drawings:

fig. 1 is a schematic perspective view of a plastic package stator according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a stator assembly and a connecting bracket according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a stator assembly and a connecting bracket according to an embodiment of the present invention;

fig. 4 is a schematic front view of a stator assembly and a connecting bracket according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view A-A provided in FIG. 4;

FIG. 6 is an enlarged schematic view of the structure of portion B provided for FIG. 5;

fig. 7 is a schematic perspective view of a connection bracket according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of another angle of the connecting bracket according to the first embodiment of the present invention;

fig. 9 is an exploded schematic view of a motor according to a second embodiment of the present invention;

fig. 10 is a schematic top view of a motor according to a second embodiment of the present invention;

fig. 11 is a schematic cross-sectional view of C-C provided for fig. 10.

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 fig. 3, the embodiment provides a plastic package stator, which includes a stator assembly 10 and a plastic package body 1, the stator assembly 10 includes a stator core 2, an end insulator 3 and a coil winding 4, the end insulator 3 is installed on an end surface of the stator core 2, the coil winding 4 is wound on the end insulator 3, the plastic package body further includes a connecting bracket 5, the connecting bracket 5 is installed on the end insulator 3, the connecting bracket 5 includes a bottom plate 51, a plurality of circumferentially spaced convex columns 52 protrude from the bottom plate 51, the plastic package body 1 plastically packages the stator core 2, the coil winding 4, the end insulator 3 and the connecting bracket 5 into a whole, the top end of each convex column 52 is provided with a screw hole 53, and the screw hole 53 is exposed out of the top surface of the plastic package body 1 to lock a motor end cap; through plastic envelope linking bridge 5 in plastic envelope body 1, be provided with the screw 53 that exposes out in plastic envelope body 1 top surface on linking bridge 5, when making the stator of moulding plastics and motor end cover adopt the screw fastening mode, need not to set up screw 53 on plastic envelope body 1, thereby the wholeness and the steadiness of plastic envelope body 1 have been guaranteed, make the motor be difficult to appear BMC and burst in assembly or use operation process, phenomenons such as drop, thereby can effectively improve the stability of motor, and a plurality of projection passes through bottom plate 51 and connects into whole, can ensure the position degree of screw 53, thereby improve the installation accuracy.

As shown in fig. 3 to 8, the end insulator 3 includes an annular insulating yoke portion 31 and a plurality of insulating tooth portions 32 disposed at an inner edge of the annular insulating yoke portion 31, a plurality of first protrusions 311 circumferentially spaced apart from each other protrude from an end surface of the annular insulating yoke portion 31, the first protrusions 311 are provided with first mounting grooves 312, a plurality of extending plates 511 circumferentially spaced apart from each other extend radially outward from an outer side wall of the bottom plate 51, a plurality of second protrusions 512 protrude from a bottom of the extending plates 511, and the second protrusions 512 are inserted into the first mounting grooves 312; the insulating tooth part 32 comprises a tooth root part (not shown) and a tooth crown part 321, the tooth root part (not shown) is connected between the inner edge of the annular insulating yoke part 31 and the tooth crown part 321, a gap is reserved between two adjacent tooth crown parts 321 to form a second mounting groove 33, a plurality of positioning plates 513 distributed at intervals in the circumferential direction are protruded from the bottom surface of the bottom plate 51, and the positioning plates 513 are inserted into the corresponding second mounting grooves 33; the connecting support 5 and the end part insulator 3 can be firmly installed, so that the injection molding of the stator and the plastic package body 1 can be conveniently completed, and the manufacturability and the product reliability of the stator in the injection molding process are improved.

As shown in fig. 7 and 8, the second protrusions 512 and the positioning plates 513 correspond to the plurality of protruding pillars on the bottom plate 51, so that the structural strength of the protruding pillars can be enhanced, the stability of the plastic package body 1 is ensured, and the motor is not prone to the phenomena of BMC bursting, falling off and the like during the assembly or use operation process, thereby effectively improving the stability of the motor.

As shown in fig. 1, a plurality of mounting feet 6 are circumferentially distributed at intervals on the outer side wall of the plastic package body 1, and first mounting holes 61 are formed in the mounting feet 6, so that the plastic package body is reasonable in design and convenient for mounting and using a motor.

As shown in fig. 1, an annular protrusion 11 for mounting a motor end cover is disposed on an end surface of the plastic package body 1, the plurality of protruding columns 52 are located in the annular protrusion 11, the screw hole 53 is exposed out of a top surface of the annular protrusion 11, and the annular protrusion 11 plays a positioning role, so that positioning and mounting of the motor end cover are facilitated.

Example two:

as shown in fig. 9 to 11, the present embodiment provides a motor, which includes a plastic package stator 20, a rotor assembly 7, a rotating shaft 8, a bearing 9, a front end cover 30 and a rear end cover 40, the plastic package stator 20 is sleeved outside the rotor assembly 7, the rotor assembly 7 is sleeved outside the rotating shaft 8, the front end cover 30 and the rear end cover 40 are installed at two ends of the plastic package stator 20, middle portions of the front end cover 30 and the rear end cover 40 are both protruded to form a bearing seat 50, the bearing 9 is installed in the bearing seat 50, the rotating shaft 8 is supported on the bearing 9, the plastic package stator 20 adopts the plastic package stator described in the first embodiment, the front end cover 30 is sleeved outside an annular protrusion 11 on an end surface of a plastic package body 1 of the plastic package stator 20, the front end cover 30 is provided with a plurality of second mounting holes 301, the plurality of second mounting holes 301 correspond to screw holes 53 on a surface of the annular protrusion 11, the front end cover 30 is locked and installed on the plastic package stator 20 by screwing with the screw holes 53 after passing through the second mounting holes 301, the rear end cover 40 and the plastic package stator 20 are integrated through injection molding.

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 principles of the present invention are equivalent replacement modes, and all are included in the scope of the present invention.

Claims (8)

1. The utility model provides a plastic envelope stator, includes stator module (10) and plastic envelope body (1), stator module (10) include stator core (2), end insulation (3) and coil winding (4), and end insulation (3) are installed on the terminal surface of stator core (2), and coil winding (4) are around locating on end insulation (3), its characterized in that: still include linking bridge (5), linking bridge (5) are installed on tip is insulating (3), linking bridge (5) are including bottom plate (51), protrusion has projection (52) of a plurality of circumference interval distribution on bottom plate (51), stator core (2), coil winding (4), tip is insulating (3) and linking bridge (5) plastic envelope is integrative in plastic envelope body (1), screw (53) have been seted up on projection (52) top, screw (53) expose in the top surface of plastic envelope body (1) and are used for locking the motor end cover.

2. The plastic package stator according to claim 1, wherein: the end insulation (3) comprises an annular insulation yoke part (31) and a plurality of insulation tooth parts (32) arranged on the inner edge of the annular insulation yoke part (31), the end face of the annular insulation yoke part (31) protrudes to form a plurality of first protrusions (311) distributed at intervals in the circumferential direction, the first protrusions (311) are provided with first installation grooves (312), the outer side wall of the bottom plate (51) radially extends outwards to form a plurality of extension plates (511) distributed at intervals in the circumferential direction, the bottom of each extension plate (511) protrudes to form a plurality of second protrusions (512), and the second protrusions (512) are inserted into the first installation grooves (312).

3. The plastic package stator according to claim 2, wherein: insulating tooth portion (32) include root of tooth and crown portion (321), the root of tooth connect in between the inner edge of annular insulating yoke portion (31) and crown portion (321), leave clearance formation second mounting groove (33) between two adjacent crown portions (321), the bottom surface protrusion of bottom plate (51) has a plurality of circumference interval distribution's locating plate (513), and locating plate (513) cartridge is in corresponding second mounting groove (33).

4. The plastic package stator according to claim 3, wherein: the second protrusions (512) and the positioning plates (513) respectively correspond to the convex columns (52) on the bottom plate (51).

5. The plastic package stator according to claim 1, 2, 3 or 4, wherein: the outer side wall of the plastic package body (1) is provided with a plurality of installation feet (6) distributed at intervals in the circumferential direction, and the installation feet (6) are provided with first installation holes (61).

6. The plastic package stator according to claim 5, wherein: the end face of the plastic package body (1) is provided with an annular protrusion (11) used for installing a motor end cover, the plurality of convex columns (52) are located in the annular protrusion (11), and the screw holes (53) are exposed out of the top face of the annular protrusion (11).

7. The utility model provides a motor, including plastic packaging stator (20), rotor subassembly (7), pivot (8), bearing (9), front end housing (30) and rear end cap (40), plastic packaging stator (20) suit is outside rotor subassembly (7), rotor subassembly (7) suit is outside pivot (8), install at plastic packaging stator (20) both ends front end housing (30) and rear end cap (40), the equal protruding bearing frame (50) that forms of middle part position of front end housing (30) and rear end cap (40), install in bearing frame (50) bearing (9), pivot (8) support is on bearing (9), its characterized in that: the plastic package stator (20) adopts the plastic package stator as claimed in any one of claims 1 to 6, the front end cover (30) is sleeved outside the annular protrusion (11) on the end face of the plastic package body (1) of the plastic package stator (20), the front end cover (30) is provided with a plurality of second mounting holes (301), the plurality of second mounting holes (301) correspond to the screw holes (53) on the surface of the annular protrusion (11), and the front end cover (30) is locked and mounted on the plastic package stator (20) by adopting screws (60) to penetrate through the second mounting holes (301) and then being in threaded connection with the screw holes (53).

8. An electrical machine according to claim 7, wherein: the rear end cover (40) and the plastic package stator (20) are integrated through injection molding.

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