CN107968514B

CN107968514B - Plastic packaging motor and fluid driving device

Info

Publication number: CN107968514B
Application number: CN201711269555.6A
Authority: CN
Inventors: 李剑雄; 彭颖卿; 高伟; 李意; 朱守民
Original assignee: Midea Group Co Ltd; GD Midea Environment Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Environment Appliances Manufacturing Co Ltd
Priority date: 2017-12-05
Filing date: 2017-12-05
Publication date: 2020-04-10
Anticipated expiration: 2037-12-05
Also published as: CN107968514A

Abstract

The invention discloses a plastic package stator component, a plastic package motor with the same and a fluid driving device, wherein the plastic package stator component comprises: the stator assembly comprises a stator core, a stator winding and a stator wiring part, wherein the stator winding is wound on the stator core, and the stator wiring part is electrically connected with the stator winding; the plastic packaging piece is plastically packaged on the stator assembly, an open part is arranged on the plastic packaging piece, and the stator wiring part is arranged at the open part; and the external wiring part is connected with the stator wiring part in an inserting manner. According to the plastic package stator assembly provided by the embodiment of the invention, leads can be carried out after plastic package is finished, so that the process of placing the outgoing lines in the related technology is reduced, the outgoing lines are not easy to misplace, the assembly process is simple, the plastic package efficiency is favorably improved, and the plastic package qualified rate is improved.

Description

Plastic packaging motor and fluid driving device

Technical Field

The invention relates to the technical field of fluid driving devices, in particular to a plastic package motor and a fluid driving device.

Background

The traditional motor generally adopts an iron shell or a cast aluminum end cover, and because the mounting structure of the fan motor is diversified, the plastic package technology is required to replace the iron shell technology to realize the diversification of the motor structure. The plastic package motor is made of thermosetting materials, and the overall noise of the motor is low.

In the correlation technique, the direct lead wire of plastic envelope motor comes out when moulding plastics, need increase the process of putting the lead-out wire at the in-process of moulding plastics, can reduce the efficiency of moulding plastics, simultaneously because the lead-out wire is even moulded plastics with the stator together, and the temperature of moulding plastics generally needs more than 120 degrees, and the insulating layer of corresponding lead-out wire also needs to adopt the higher material of temperature resistant, consequently directly has increased material cost. In addition, the plastic package motor mounting structure is single, and is difficult to match diversified structures, and the problem of low qualification rate always exists in the injection molding process caused by the fact that the broken wires are influenced by the wire passing and winding modes.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the plastic package stator assembly, which can improve the plastic package efficiency and the plastic package qualified rate.

The invention also provides a plastic package motor with the plastic package stator assembly.

The invention also provides a fluid driving device with the plastic package motor.

The plastic package stator assembly according to the embodiment of the invention comprises: the stator assembly comprises a stator core, a stator winding and a stator wiring part, wherein the stator winding is wound on the stator core, and the stator wiring part is electrically connected with the stator winding; the plastic packaging piece is plastically packaged on the stator assembly, an open part is arranged on the plastic packaging piece, and the stator wiring part is arranged at the open part; and the external wiring part is connected with the stator wiring part in an inserting manner.

According to the plastic package stator assembly provided by the embodiment of the invention, leads can be carried out after plastic package is finished, so that the process of placing the outgoing lines in the related technology is reduced, the outgoing lines are not easy to misplace, the assembly process is simple, the plastic package efficiency is favorably improved, and the plastic package qualified rate is improved.

In addition, the plastic package stator assembly according to the above embodiment of the present invention may further have the following additional technical features:

according to the plastic package stator assembly provided by the embodiment of the invention, the stator wiring parts and the outer wiring parts are wiring terminals respectively.

According to some embodiments of the present invention, the stator wiring portion is provided with a first clamping portion, the external wiring portion is provided with a second clamping portion, and the first clamping portion is clamped with the second clamping portion when the external wiring portion is inserted into the stator wiring portion.

Optionally, one of the first clamping portion and the second clamping portion is a bayonet, and the other is a buckle.

Furthermore, the outer wiring portion is inserted in the stator wiring portion, the outer side face of the outer wiring portion is provided with the buckle protruding outwards, and the side wall of the stator wiring portion is provided with the bayonet.

Furthermore, the buckle is provided with a guide surface which extends obliquely relative to the plugging direction.

In some embodiments of the invention, the open portion is an open aperture.

Further, the stator wiring portion is built in the open hole, and the external wiring portion extends into the open hole.

Optionally, the open portion is provided on a left side or a right side of the mold package.

According to some embodiments of the present invention, a terminal plate is provided on the stator core, the terminal plate being electrically connected to the stator winding, the stator terminal portion being provided on the terminal plate.

Furthermore, an insulating frame is arranged on the stator core, the stator winding is wound on the insulating frame, and the wiring board is arranged on the insulating frame.

In some embodiments of the present invention, the stator core includes a plurality of segmented cores.

According to some embodiments of the invention, a plurality of wires are connected to the outer wire portion, and a sheath is sheathed around the plurality of wires.

The plastic package motor according to the embodiment of the invention comprises: according to the plastic package stator assembly of the embodiment of the invention; the rotor assembly is arranged in the plastic package stator assembly and comprises a rotor and a rotating shaft inserted in the rotor.

Further, the plastic package includes: the stator plastic package body is connected with the stator assembly; the gearbox seat is arranged at the rear end of the stator plastic-sealed body, a gear assembly is suitable for being arranged in the gearbox seat, and the gear assembly is in transmission connection with a rotating shaft of the rotor assembly.

Further, be injectd the gearbox groove that has the upper end open-ended in the gearbox seat, the plastic envelope motor still includes: and the gear box cover is arranged on the gear box seat and is clamped with the gear box seat.

Optionally, at least one of the gear box cover and the plastic package piece is provided with a wire slot for clamping the external wiring part.

Further, the wire groove is a V-shaped groove.

According to some embodiments of the present invention, the plastic package member is provided with a mounting hole for mounting the temperature controller, and the gear box cover is provided with a stopping portion adapted to stop the temperature controller in the mounting hole when the temperature controller is disposed in the mounting hole.

In some embodiments of the present invention, a front bearing and a rear bearing for supporting the rotation of the rotating shaft are respectively disposed on two sides of the rotor, the plastic package motor further includes a front cover and a rear cover for axially positioning the front bearing and the rear bearing, and both the front cover and the rear cover are connected to the plastic package member.

Furthermore, the rear bearing is stopped between the plastic package part and the rear cover, and an arc-shaped surface in line contact with the plastic package part is formed at the rear part of the outer peripheral surface of the rear bearing.

According to some embodiments of the invention, the back cover is disposed in the middle through hole in the plastic package, the back cover comprising: the rear cover main body is sleeved on the rotating shaft, and the outer periphery of the rear cover main body abuts against the inner peripheral surface of the plastic packaging part; and the rear elastic stop piece is connected with the rear cover main body and abuts against the front part of the rear bearing.

Furthermore, a rear lubricating space is formed between the rear cover main body and the elastic stop piece, and oil sludge is arranged in the rear lubricating space.

In some embodiments of the present invention, the plastic package motor further includes: the rear wear-resistant washer is sleeved on the rotating shaft and is positioned at the front end of the rear bearing; the rear retainer ring is sleeved on the rotating shaft and positioned on the front side of the rear wear-resistant washer; and the rear shockproof check ring is sleeved on the rotating shaft and is positioned between the rear wear-resistant washer and the rear check ring.

According to some embodiments of the invention, the front cover comprises: the first cover body is sleeved on the rotating shaft and abuts against the front part of the front bearing, and the outer periphery of the first cover body is connected with the plastic package part; the outer circumferential edge of the second cover body is connected with the first cover body, and the inner circumferential edge of the second cover body extends to a position between the front bearing and the rotor; and the front elastic stop piece is connected with the second cover body and stops against the rear part of the front bearing.

Furthermore, a front lubricating space is formed between the second cover body and the front elastic stop piece, and oil sludge is arranged in the front lubricating space.

In some embodiments of the present invention, the plastic package motor further includes: the front wear-resistant washer is sleeved on the rotating shaft and is positioned at the rear end of the front bearing; the front retainer ring is sleeved on the rotating shaft and is positioned on the rear side of the front wear-resistant washer; the front shockproof check ring is sleeved on the rotating shaft and is positioned between the front wear-resistant washer and the front check ring.

The fluid driving device comprises the plastic package motor.

Optionally, the fluid driving device is a fan or a fan heater.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a right side view of a plastic encapsulated motor according to an embodiment of the invention;

fig. 2 is a top view of a plastic encapsulated motor according to an embodiment of the invention;

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

FIG. 4 is an enlarged schematic view of FIG. 3 at circle B;

FIG. 5 is an enlarged schematic view of FIG. 3 at circle C;

FIG. 6 is an enlarged schematic view of FIG. 3 at circle D;

FIG. 7 is a schematic structural view of a stator assembly of the overmolded stator assembly according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a plastic package stator assembly according to an embodiment of the invention;

FIG. 9 is a schematic structural view of an outer wire portion of a overmolded stator assembly according to an embodiment of the invention;

fig. 10 is a schematic structural diagram of a gear box cover of the plastic package motor according to an embodiment of the invention;

fig. 11 is a schematic structural diagram of a rotor assembly of a plastic packaging motor according to an embodiment of the present invention;

fig. 12 is a schematic structural view of a gear assembly of the plastic packaging motor according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a front cover of a plastic package motor according to an embodiment of the invention;

fig. 14 is a schematic structural diagram of a back cover of a plastic package motor according to an embodiment of the invention;

fig. 15 is a schematic structural diagram of a temperature controller of a plastic package motor according to an embodiment of the invention;

fig. 16 is a schematic structural diagram of wiring of the plastic packaging motor according to the embodiment of the invention.

Reference numerals:

a plastic package motor 110;

a stator assembly 10; a stator core 11; a stator winding 12; a stator wiring portion 13; a first clamping portion 131; a patch panel 14; an insulating frame 15;

a plastic package 20; an open portion 201; a mounting hole 202; a stator plastic package body 21; a gearbox housing 22; a gear box groove 221; a card 222; a gear box cover 23; a wire chase 231; a stopper 232; a baffle 233; a snap fastener 234;

an outer wiring portion 30; a second clip portion 301;

a rotor assembly 40; a rotor 41; a rotating shaft 42;

a front bearing 51; a rear bearing 52;

a front cover 60; a front lubrication space 601; a pawl 602; a first cover body 61; a second cover 62; a front elastic stopper 63;

a front wear washer 64; a front retainer ring 65; a front anti-rattle collar 66;

a rear cover 70; a rear lubrication space 701; a rear cover main body 71; a rear resilient stop 72;

a rear wear washer 73; a rear retainer ring 74; a rear anti-rattle retainer ring 75;

a gear assembly 80; a temperature controller 81; a wiring 82; a sheath 83; sludge 84.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below are exemplary embodiments for explaining the present invention with reference to the drawings and should not be construed as limiting the present invention, and those skilled in the art can make various changes, modifications, substitutions and alterations to the embodiments without departing from the principle and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "axial", "radial", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

A plastic encapsulated stator assembly according to an embodiment of the invention is described below with reference to fig. 1-16.

Referring to fig. 1-16, a plastic encapsulated stator assembly according to one embodiment of the present invention may include: the stator assembly 10, the plastic package 20 and the external wiring portion 30.

Specifically, the stator assembly 10 may include a stator core 11, a stator winding 12, and a stator wiring portion 13, wherein the stator winding 12 may be wound on the stator core 11, and the stator wiring portion 13 is electrically connected to the stator winding 12. The plastic package member 20 may be plastically packaged on the stator assembly 10, the plastic package member 20 may be provided with an open portion 201, the stator wiring portion 13 may be provided at the open portion 201, and the external wiring portion 30 and the stator wiring portion 13 may be connected by plugging.

Conventional motors typically employ an iron shell or cast aluminum end cap. Because fan motor's mounting structure is diversified, need utilize plastic envelope technique to replace the iron-clad technique to realize motor structure's diversification. In the correlation technique, the direct lead comes out when moulding plastics of plastic envelope motor, need increase the process of putting the lead-out wire at the in-process of moulding plastics, can reduce the efficiency of moulding plastics, the condition that the lead-out wire misplaces also appears easily in the direct lead-out wire, leads to moulding plastics the qualification rate low, simultaneously because the lead-out wire links together with the stator and moulds plastics, and the temperature of moulding plastics generally needs more than 120 degrees, the insulating layer of corresponding lead-out wire also needs to adopt the higher material of temperature resistance, consequently directly increased material cost. In addition, the plastic package motor mounting structure is single, and is difficult to match diversified structures, and the wire breakage is also caused by the wire passing and winding mode, so that the problem of low yield in the injection molding process is solved.

In the invention, when the plastic package stator assembly is assembled, the stator winding 12 of the stator assembly 10 can be wound on the stator core 11, the stator winding 12 is electrically connected with the stator wiring part 13, then the plastic package part 20 is plastic-packaged on the stator assembly 10, and after the plastic package is finished, the external wiring part 30 is connected with the stator connecting part 13 in the open part 201 of the plastic package part 20 in an inserting manner, so that the assembly of the plastic package stator assembly is finished.

Stator assembly 10 includes stator wiring portion 13, and plastic envelope stator module still includes outer wiring portion 30, can realize coming out stator winding 12 lead wire after the plastic envelope is accomplished again, from this, need not to carry out putting of lead-out wire at the plastic envelope in-process, and the plastic envelope process is simpler, is favorable to simplifying production technology, improves plastic envelope efficiency.

In addition, the stator wiring portion 13 of the stator assembly 10 can fix the winding of the stator winding 12, the situation of dislocation, short circuit and breakage of the winding in the plastic package process is prevented, the connection of the outgoing lines is realized through the splicing of the stator wiring portion 13 and the external wiring portion 30 after the plastic package is completed, the situation of dislocation of the outgoing lines can be avoided, and the plastic package qualified rate is improved.

The plastic package part 20 according to the embodiment of the present invention may further have different mounting structures according to the requirements of the external connection structures, for example, in the specific embodiment shown in fig. 8, the plastic package part 20 may have structures such as threads, grooves, and ribs, so that the plastic package stator assembly may be connected to more external connection structures, and the plastic package stator assembly has more diverse structures and stronger practicability.

The plastic package stator assembly comprises the stator wiring part 13 and the external wiring part 30, leads can be conducted after plastic package is completed, the process of placing the leads in the related technology is reduced, the leads are not prone to dislocation, the assembly process is simple, the plastic package efficiency is improved, and the plastic package qualified rate is improved.

According to the plastic-encapsulated stator assembly of an embodiment of the present invention, as shown in fig. 1 and 8, the opening portion 201 may be an open hole, which facilitates the connection between the stator wiring portion 13 and the external wiring portion 30.

Further, as shown in fig. 1, the stator wiring portion 13 may be embedded in the opening hole, the external wiring portion 30 may extend into the opening hole to be plugged with the stator wiring portion 13, and the opening hole may protect the structures of the stator wiring portion 13 and the external wiring portion 30, so as to prevent the connection structure from being damaged.

Optionally, in the present invention, the position of the open portion 201 is not particularly limited, for example, in the specific embodiment shown in fig. 8, the open portion 201 may be disposed on the right side of the plastic package 20, and of course, the open portion 201 may also be disposed on the left side of the plastic package 20, which is beneficial to the design of the mold during the injection molding process, and the molding and demolding are simpler and more convenient, so as to further improve the yield of the injection molding.

In some embodiments of the present invention, the stator wiring portion 13 and the external wiring portion 30 may be wiring terminals, respectively. Binding post simple structure, simple to operate, stator wiring portion 13 and external connection portion 30 are connected more swiftly, are favorable to improving assembly efficiency, and binding post and lead-out wire firm in connection are reliable.

According to some embodiments of the present invention, as shown in fig. 7 and 9, the stator wiring portion 13 may be provided with a first clamping portion 131, the external wiring portion 30 may be provided with a second clamping portion 301, and when the external wiring portion 30 is inserted into the stator wiring portion 13, the first clamping portion 131 and the second clamping portion 301 may be clamped to connect the stator wiring portion 13 and the external wiring portion 30, so that the connection structure is simple, the connection can be completed without using a special tool, and the operation is convenient.

In the embodiment shown in fig. 7 and 9, the first clamping portion 131 may be a bayonet, the second clamping portion 301 may be a buckle, and the buckle may be clamped into the bayonet to realize the clamping of the first clamping portion 131 and the second clamping portion 301.

Of course, in other embodiments of the present invention, positions of the buckle and the bayonet may be interchanged, specifically, the first clamping portion 131 may be the buckle, and the second clamping portion 301 may be the bayonet, which also enables the first clamping portion 131 and the second clamping portion 301 to be clamped simply and firmly. In other words, one of the first clip portion 131 and the second clip portion 301 is a bayonet, and the other of the first clip portion 131 and the second clip portion 301 is a buckle.

In addition, in the embodiment that the first clamping portion 131 is a bayonet and the second clamping portion 301 is a buckle, the buckle may be disposed on the outer side surface of the external wiring portion 30, and the buckle protrudes outward from the outer side surface of the external wiring portion 30, and the bayonet may be disposed on the side wall of the stator wiring portion 13, so that the external wiring portion 30 may be inserted into the stator wiring portion 13.

It is understood that the position of the snap is not limited thereto, and for example, the snap may be formed by an inner side surface of the external wire connecting portion 30 protruding inward, the bayonet may be provided on a side wall of the stator wiring portion 13, and the stator wiring portion 13 may be inserted into the external wire connecting portion 30, which is within the scope of the present invention.

Further, the buckle may be provided with a guide surface extending obliquely with respect to the plugging direction, for example, as shown in fig. 9, the guide surface extends obliquely outward along the plugging direction, and when the buckle is plugged into the bayonet, the guide surface can guide to make the plugging easier.

According to some embodiments of the present invention, as shown in fig. 7, the stator core 11 may be provided with a wiring board 14, the wiring board 14 may be electrically connected to the stator winding 12, the stator winding 12 may be more conveniently connected, and the wiring board 14 may position the windings of the stator sleeve 12, so as to prevent the windings from being displaced during the injection molding process to cause wire breakage, thereby ensuring the qualified rate of injection molding. The stator wiring portions 13 may be provided on the wiring board 14, and the connection of the stator wiring portions 13 is simple and convenient.

As shown in fig. 7, further, the stator core 11 may be provided with an insulating frame 15, and the stator winding 12 may be wound on the insulating frame 15 to prevent the stator winding 12 from being in direct contact with the stator core 11 to cause a short circuit. In addition, the wiring board 14 can be arranged on the insulating frame 15, and the connection of the wiring board 14 is simple and convenient.

In some embodiments of the present invention, as shown in fig. 7, the stator core 11 may include a plurality of block cores, and when the stator winding 12 is wound, the stator winding may be wound on each block core, and then the plurality of block cores may be spliced, and the plurality of block cores and the stator winding 12 may be combined into a circular whole, so that the winding and the passing are more convenient, the wire breakage may be effectively prevented, and the assembly efficiency may be improved.

According to some embodiments of the present invention, as shown in fig. 1 and 16, a plurality of wires 82 may be connected to the external wiring portion 30, and the plurality of wires 82 may be formed as lead wires and may be electrically connected to the stator winding 12 through the external wiring portion 13, so as to energize the stator winding 12. It should be noted that, in the present invention, the number of the connection wires 82 can be flexibly set according to actual situations, and only the requirement for energizing the stator winding 12 needs to be satisfied.

In addition, the plurality of wires 82 may be sheathed with a sheath 83. On one hand, the sheath 83 can integrate the plurality of wires 82, so that the plurality of wires 82 are more conveniently placed and the appearance is tidier; on the other hand, the sheath 83 can prevent the wiring 82 from being damaged to cause short circuit or disconnection, and the plastic-packaged stator assembly is more durable.

It can be understood that, in the present invention, the external wiring portion 30 connected with the wiring 82 and the sheath 83 may be connected to the stator wiring portion 13 after the plastic molding process is completed, and the wiring 82 and the sheath 83 do not need to bear high temperature during the injection molding process, so the insulating layer of the wiring 82 and the sheath 83 are not limited to high temperature resistant materials, for example, some lower-priced materials that do not resist high temperature may also ensure the service life of the wiring 82 and the sheath 83, which is beneficial to reducing the production cost.

The plastic package motor 110 according to an embodiment of the present invention may include: a overmolded stator assembly and rotor assembly 40 according to an embodiment of the present invention. As shown in fig. 1-3, the rotor assembly 40 may be disposed within the overmolded stator assembly, the rotor assembly 40 may include a rotor 41 and a rotating shaft 42, and the rotating shaft 42 may be inserted within the rotor 41. Because the plastic package stator assembly according to the embodiment of the invention has the beneficial technical effects, the plastic package motor 110 according to the embodiment of the invention also has the corresponding technical effects, leads can be led after the plastic package is finished, the process of placing the lead wires in the related technology is reduced, the lead wires are not easy to be dislocated, the assembly process is simple, the plastic package efficiency is improved, and the plastic package qualified rate is improved.

Further, as shown in fig. 8, the molding member 20 may include: a stator plastic-sealed body 21 and a gear box seat 22, wherein the gear box seat 22 can be arranged at the rear end of the stator plastic-sealed body 21. As shown in fig. 3, the stator plastic package body 21 can be connected to the stator assembly 10, and a gear assembly 80 can be disposed in the gear box seat 22, wherein the gear assembly 80 can be in transmission connection with the rotating shaft 42 of the rotor assembly 40.

For example, in some examples of the present invention, the rotor assembly 40 may be installed in the stator plastic package body 21 of the plastic package 20, the rear end of the rotating shaft 42 of the rotor assembly 40 may extend from the stator plastic package body 21 into the gear box base 22, and the rear end of the rotating shaft 41 is provided with a driving worm, which may mesh with the gear assembly 80 in the gear box base 22 to realize driving.

Further, as shown in fig. 3, a gear box groove 221 having an upper end opened may be defined in the gear box holder 22, and the gear assembly 80 may be disposed in the gear box groove 221. The plastic package motor 110 may further include a gear box cover 23, the gear box cover 23 may be covered on the gear box base 22, and the gear box cover 23 may be clamped with the gear box base 22. Therefore, the gear box cover 23 can shield the gear assembly 80 in the gear box groove 221, the gear assembly 80 can be prevented from being damaged, the transmission of running noise can be reduced, and the structural design is more reasonable.

It should be noted that the clamping structure of the gear box cover 23 and the gear box base 22 is not particularly limited, and only the requirement of firm connection between the gear box cover 23 and the gear box base 22 needs to be satisfied. For example, in the embodiment shown in fig. 8 and 10, the lower sides of the left and right ends of the gear box cover 23 are respectively provided with a downwardly extending snap fastener 234, the left and right ends of the gear box base 22 can be provided with the snap fasteners 222, and the snap fasteners 234 can be snapped on the lower end surfaces of the snap fasteners 222 to achieve the snap-fit connection between the gear box base 22 and the gear box cover 23.

In addition, the latch fastener 234 has an inclined surface extending obliquely relative to the latch direction, and the upper end surface of the latch plate 222 forms an inclined surface extending obliquely relative to the latch direction, so that the inclined surface of the latch fastener 234 and the inclined surface of the latch plate 222 can be guided when latching is performed, and the latch base 22 and the latch cover 23 can be latched more conveniently.

According to some embodiments of the present invention, as shown in fig. 1 and fig. 3, the plastic package motor 110 may further include a wire slot 231, and the wire slot 231 may be connected to the connection wire 82 of the external connection portion 30 in a clamping manner, so as to prevent the connection wire 82 from moving randomly or being broken and ignited due to uneven stress during the use of the plastic package motor 110, which is safer and more reliable.

It should be noted that, in the present invention, the position of the wire slot 231 can be flexibly set according to the actual situation. Alternatively, as shown in fig. 3 and 10, the wire slot 231 may be disposed on the gear box cover 23, of course, the wire slot 231 may also be disposed on the plastic package 20, or both the gear box cover 23 and the plastic package 20 may be disposed with the wire slot 231, which may achieve the clamping connection of the connection wire 82, and all fall within the protection scope of the present invention. In other words, at least one of the gear box cover 23 and the plastic package 20 may be provided with a wire groove 231 for clipping the wire 82 of the external wire connection portion 30.

The shape and structure of the wire slot 231 can also be flexibly configured according to the actual situation, for example, in some examples of the present invention, as shown in fig. 3 and 10, the wire slot 231 can be a V-shaped slot, and the wire 82 can be extended from the external wire portion 30 and clamped into the slot of the V-shaped slot to fix the wire 82.

In other examples of the present invention, as shown in fig. 2, 8 and 10, the wire slot 231 may also be a U-shaped slot, the U-shaped slot may be formed by a side wall of the gear box seat 22 being recessed inwards, a baffle 233 may be disposed on a side wall of the gear box cover 23, the baffle 233 may block an opening of the U-shaped slot, and the baffle 233 and the U-shaped slot cooperate to position the wire 82. Of course, in the present invention, as shown in fig. 1 and 2, the wire slot 231 may include a plurality of wire slots 231, and the plurality of wire slots 231 may include a V-shaped slot and a U-shaped slot, so that the positioning effect of the wiring 82 is better.

According to some embodiments of the present invention, as shown in fig. 3 and 6, the plastic package member 20 may be provided with a mounting hole 202, the mounting hole 202 may be used for mounting a temperature controller 81, the temperature controller 81 is inserted into the mounting hole 202 to monitor the temperature of the plastic package motor 110, so that the measured temperature is closer to the temperature of the stator assembly 10, and when the temperature of the stator assembly 10 exceeds the jumping temperature of the temperature controller 81, the temperature controller 81 may cut off the power supply in time, thereby preventing the plastic package motor 110 from being burned out, and being safer and more reliable.

In addition, as shown in fig. 6 and 10, the gear box cover 23 may be provided with a stopper 232, when the thermostat 81 is disposed in the mounting hole 202, the stopper 232 may stop the thermostat 81 in the mounting hole 202 to prevent the thermostat 81 from being separated from the mounting hole 202, the fixing structure of the thermostat 81 is simple and reliable, and the stopper 232 is integrally formed with the gear box cover 23, so that the number of parts may be reduced and the assembly process may be simplified.

In some embodiments of the present invention, as shown in fig. 3, 13 and 14, a front bearing 51 and a rear bearing 52 may be respectively disposed on both sides of the rotor 41, and the front bearing 51 and the rear bearing 52 may be used to support the rotation of the rotating shaft 42, so that the rotation of the rotating shaft 42 is more smooth. The plastic package motor 110 may further include a front cover 60 and a rear cover 70, both the front cover 60 and the rear cover 70 may be connected to the plastic package member 20, and the front cover 60 and the rear cover 70 may be respectively used for axially positioning the front bearing 51 and the rear bearing 52, so as to prevent the noise generated by the axial displacement of the front bearing 51 and the rear bearing 52 from affecting the normal operation during the operation of the plastic package motor 110.

Further, as shown in fig. 3 and 5, the rear bearing 52 may be stopped to abut between the plastic package member 20 and the rear cover 70, and an arc surface may be formed at the rear portion of the outer peripheral surface of the rear bearing 52, and the arc surface may be in line contact with the plastic package member 20 to perform a centering function, so that the coaxiality of the plastic package motor 110 may be improved, and the rotation shaft 42 may rotate more stably.

According to some embodiments of the present invention, as shown in fig. 3 and 5, the back cover 70 may be disposed in the middle through hole in the plastic package 20, and the back cover 70 may include: a rear cover main body 71 and a rear elastic stopper 72. The rear elastic stopper 72 may be connected with the rear cover main body 71, and the rear elastic stopper 72 may be stopped against the front of the rear bearing 52 to achieve axial positioning of the rear bearing 52. The rear cover body 71 can be sleeved on the rotating shaft 42, and the outer circumference of the rear cover body 71 can be stopped against the inner circumference of the plastic package 20, so as to realize the connection between the rear cover 70 and the plastic package 20. In some examples of the present invention, the outer circumference of the back cover main body 71 may be in interference fit with the inner circumference of the plastic package 20, and the back cover 70 is better positioned.

Further, as shown in fig. 5, a rear lubrication space 701 may be formed between the rear cover main body 71 and the elastic stopper 72, oil sludge 84 may be disposed in the rear lubrication space 701, and the oil sludge 84 may perform a lubrication function, reduce friction between the rear bearing 52 and the rotating shaft 42, reduce friction loss, and reduce the starting torque. In the present invention, the sludge 84 may be a mixture of lubricating grease and fibers, which is effective in preventing the lubricating grease from leaking.

In some embodiments of the present invention, as shown in fig. 3 and 5, the plastic package motor 110 may further include a rear wear-resistant washer 73, the rear wear-resistant washer 73 may be sleeved on the rotating shaft 42, and the rear wear-resistant washer 73 is located at the front end of the rear bearing 52, so that wear of the rear bearing 52 may be reduced, and the service life of the rear bearing 52 may be prolonged. The rear wear-resistant washer 73 and the rear bearing 52 can be spaced apart by a predetermined distance, which not only can reduce the wear of the rear bearing 52, but also can reduce the starting torque, and is beneficial to improving the performance of the plastic package motor 110.

Further, as shown in fig. 3 and 5, the plastic package motor 110 may further include a rear retaining ring 74, the rear retaining ring 74 may be sleeved on the rotating shaft 42, the rear retaining ring 74 may be located on the front side of the rear wear-resistant washer 73, and the rear retaining ring 74 may position the rear wear-resistant washer 73. In addition, an annular groove may be formed on the rotating shaft 42, and the rear retainer 74 may be a split retainer, which may be sleeved in the annular groove by a split to realize the positioning of the rear retainer 74.

Still further, as shown in fig. 3 and 5, the plastic package motor 110 may further include a rear anti-vibration retainer ring 75, the rear anti-vibration retainer ring 75 may be sleeved on the rotating shaft 42, and the rear anti-vibration retainer ring 75 may be located between the rear wear-resistant washer 73 and the rear retainer ring 74, when the rotating shaft 42 rotates, the rotating shaft 42 inevitably generates a certain displacement along the axial direction, the rear anti-vibration retainer ring 75 may prevent generation of vibration noise, and may reduce collision of the rear bearing 52, which is beneficial to improving the service life of the rear bearing 52.

According to some embodiments of the present invention, as shown in fig. 3 and 4, the front cover 60 may include: a first cover 61, a second cover 62 and a front elastic stopper 63. The first cover 61 may be sleeved on the rotating shaft 42, the outer circumferential edge of the first cover 61 may be connected to the plastic package 20, for example, the outer circumferential edge of the first cover 61 may be in interference fit with the inner circumferential surface of the plastic package 20, the outer circumferential edge of the second cover 62 may be connected to the first cover 61, the inner circumferential edge of the second cover 62 may extend between the front bearing 51 and the rotor 41, and the front elastic stopper 63 may be connected to the second cover 62, so that the assembly and the position fixation of the front cover 60 may be achieved, and the positioning effect of the front cover 60 is good.

In the present invention, the connection structure of the first cover 61 and the second cover 62 is not particularly limited, for example, in the specific embodiment shown in fig. 3 and 13, the first cover 61 may be provided with three or four or more claws 602, the claws 602 may be snapped on the outer peripheral edge of the second cover 62 to realize the connection between the first cover 61 and the second cover 62, and the connection structure is simple and firm.

In addition, the front elastic stopper 63 may abut against a rear portion of the front bearing 51, and the first cover 61 may abut against a front portion of the front bearing 51 to achieve axial positioning of the front bearing 51. And the front part of the outer peripheral surface of the front bearing 51 can be formed with an arc-shaped surface, and the arc-shaped surface can be in line contact with the first cover body 61 to play a role of aligning, so that the coaxiality of the plastic package motor 110 can be improved, and the rotation of the rotating shaft 42 is more stable.

Further, as shown in fig. 4, a front lubrication space 601 may be formed between the second cover 62 and the front elastic stopper 63, oil sludge 84 may be disposed in the front lubrication space 601, and the oil sludge 84 may perform a lubrication function, so as to reduce friction between the front bearing 51 and the rotating shaft 42, reduce friction loss, and reduce the starting torque. In the present invention, the sludge 84 may be a mixture of lubricating grease and fibers, which is effective in preventing the lubricating grease from leaking.

In some embodiments of the present invention, as shown in fig. 3 and 4, the plastic package motor 110 may further include: the front wear-resistant washer 64, the front retainer ring 65 and the front anti-vibration retainer ring 66, and the front wear-resistant washer 64, the front retainer ring 65 and the front anti-vibration retainer ring 66 can be sleeved on the rotating shaft 42. The front wear washer 64 may be located at the rear end of the front bearing 51, which may reduce wear of the front bearing 51 and increase the service life of the front bearing 51. The front wear-resistant washer 64 and the front bearing 51 can be spaced apart by a predetermined distance, so that not only can the abrasion of the front bearing 51 be reduced, but also the starting torque can be reduced, and the performance of the plastic package motor 110 can be improved.

A front retainer ring 65 may be located on the rear side of the front wear washer 64, and the front retainer ring 65 may locate the front wear washer 64. In addition, an annular groove may be formed in the rotating shaft 42, and the front retainer ring 65 may be a split retainer ring, which may be sleeved in the annular groove by an opening to position the front retainer ring 65.

The front anti-vibration retainer ring 66 can be positioned between the front wear-resistant washer 64 and the front retainer ring 65, when the rotating shaft 42 runs, the rotating shaft 42 inevitably can generate certain displacement along the axial direction, the front anti-vibration retainer ring 66 can prevent the generation of vibration noise, the collision of the front bearing 51 can be reduced, and the service life of the front bearing 51 can be prolonged.

The following detailed description of the manufacturing process of the plastic injection molded motor 110 according to one embodiment of the present invention is made with reference to the accompanying drawings, and it is to be understood that the following description is only exemplary and should not be construed as limiting the invention.

As shown in fig. 1 to 16, the plastic-sealed motor 110 may include a stator assembly 10, a plastic-sealed member 20, an external connection portion 30, a rotor assembly 40, a front bearing 51, a rear bearing 52, a front cover 60, a rear cover 70, a front wear-resistant gasket 64, a front retainer 65, a front anti-vibration retainer 66, a rear wear-resistant gasket 73, a rear retainer 74, a rear anti-vibration retainer 75, a thermostat 81, a connection wire 82, a sheath 83, and oil sludge 84. The stator assembly 10 includes a stator core 11, a stator winding 12, a stator wiring portion 13, a terminal plate 14, and an insulating frame 15.

The plastic package motor 110 is manufactured as follows:

firstly, an insulating frame 15 is sleeved on the stator core 11, the stator winding 12 is wound on the insulating frame 15, the wiring board 14 is connected with the right end of the insulating frame 15, and the stator wiring part 13 is connected with the wiring board 14, so that the assembly of the stator assembly 10 is completed.

Then, the assembled stator assembly 10 is placed in a mold for injection molding to form the plastic package 20, the stator assembly 10 is plastic-molded in the plastic package 20, and the stator wiring portion 13 is located in the open portion 201 of the plastic package 20.

Then, the gear assembly 80 is mounted in the gear box groove 221 of the gear box base 22, the temperature controller 81 is mounted in the mounting hole 202 of the plastic package 20, and the gear box cover 23 is mounted on the gear box base 22 through the snap fastener 234, so that the stopper 232 of the gear box cover 23 can block the upper end of the temperature controller 81 to prevent the temperature controller 81 from being withdrawn from the mounting hole 202.

Then, the rear bearing 52 and the rear cover 60 are sequentially pressed into the middle through hole of the plastic package 20, the outer periphery of the rear cover 60 is in interference fit with the inner peripheral surface of the plastic package 20, the rear bearing 52 is stopped against the tapered surface formed by the rear elastic stop member 72 and the inner peripheral surface of the plastic package 20, and then the oil sludge 84 is injected into the rear lubrication space 701 between the rear cover main body 71 of the rear cover 70 and the rear elastic stop member 72.

Then, the front wear-resistant washer 64, the front retaining ring 65, the front anti-vibration retaining ring 66, the rear wear-resistant washer 73, the rear retaining ring 74 and the rear anti-vibration retaining ring 75 are sleeved on the rotating shaft 42 of the rotor assembly 40, the rotor assembly 40 is installed in the middle through hole of the plastic package 20, and the worm at the rear end of the rotating shaft 42 of the rotor assembly 40 penetrates through the rear bearing 52 to enter the gearbox seat 22 and is meshed with the gear assembly 80, so that transmission is realized.

Then, the front cover 60 is pressed into the central through hole of the plastic package 20, the outer circumference of the front cover 60 is in interference fit with the inner circumference of the plastic package 20, the front bearing 51 is stopped between the first cover body 61 and the front elastic stop 63, and then the oil sludge 84 is injected into the front lubricating space 601 between the second cover body 62 of the front cover 60 and the front elastic stop 63.

Finally, the wiring 82 sleeved with the sheath 83 is connected with the external wiring part 30, the external wiring part 30 is clamped with the stator wiring part 13 in the open space 201 of the plastic package 20, the wiring 82 sleeved with the sheath 83 passes through the outer side of the V-shaped wire slot 231 on the gear box cover 23 along the rear wall of the plastic package 20, then is turned back to be clamped into the V-shaped groove, passes through the inner side of the baffle plate 233 of the gear box cover 23 and is clamped into the U-shaped wire slot 231, the wiring 82 can be clamped by the V-shaped groove and the U-shaped groove, and the phenomenon that the wiring 82 is bent and stressed unevenly in the swinging process of a fluid driving device including the plastic package motor 110, such as a fan, is prevented, and the disconnection and fire are caused at the connection part of the wiring. Thereby, the manufacturing and assembling of the entire plastic sealing motor 110 are completed.

A fluid driving apparatus according to an embodiment of the present invention includes a plastic encapsulated motor 110 according to an embodiment of the present invention. Because the plastic package motor 110 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the fluid driving device according to the embodiment of the present invention also has a corresponding technical effect, and can perform the lead wire after the plastic package is completed, thereby reducing the process of placing the lead wire in the related art, the lead wire is not easy to be dislocated, the assembly process is simple, the plastic package efficiency is improved, and the plastic package yield is improved.

Alternatively, in the present invention, the fluid driving device may be a fan or a fan heater, which is within the protection scope of the present invention.

Other configurations and operations of the overmolded stator assembly, the overmolded motor 110, and the fluid drive device according to embodiments of the present invention will be known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "embodiment," "particular embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples without interference or contradiction.

Claims

1. A plastic package motor, characterized by comprising:

a plastic package stator assembly, the plastic package stator assembly comprising:

the stator assembly comprises a stator core, a stator winding and a stator wiring part, the stator winding is wound on the stator core, the stator wiring part is electrically connected with the stator winding,

the plastic package piece is plastically packaged on the stator assembly, an open part is arranged on the plastic package piece, the stator wiring part is arranged at the open part, the plastic package piece comprises a gear box seat, a gear assembly is suitable for being arranged in the gear box seat, a gear box groove with an upper end opening is limited in the gear box seat,

the external wiring part is connected with the stator wiring part in an inserting manner;

the rotor assembly is arranged in the plastic package stator assembly and comprises a rotor and a rotating shaft inserted in the rotor, and the gear assembly is in transmission connection with the rotating shaft of the rotor assembly;

a gear box cover which is arranged on the gear box seat and clamped with the gear box seat, a wire groove for clamping the wire of the external wire connecting part is arranged on the gear box cover,

the side wall of the plastic package part is provided with a mounting hole for mounting the temperature controller, the gear box cover is provided with a stopping part, and the stopping part is suitable for stopping the temperature controller in the mounting hole when the temperature controller is arranged in the mounting hole.

2. The plastic package motor according to claim 1, wherein the stator wiring portion and the external wiring portion are wiring terminals, respectively.

3. The plastic package motor according to claim 1, wherein the stator wiring portion is provided with a first clamping portion, the external wiring portion is provided with a second clamping portion, and the first clamping portion is clamped with the second clamping portion when the external wiring portion is plugged with the stator wiring portion.

4. The plastic package motor of claim 3, wherein one of the first clamping portion and the second clamping portion is a bayonet, and the other is a buckle.

5. A plastic package motor according to claim 4, wherein the external wiring portion is inserted into the stator wiring portion, the outer side surface of the external wiring portion is provided with the outward protruding clip, and the side wall of the stator wiring portion is provided with the bayonet.

6. A plastic package motor according to claim 4, wherein the clip is provided with a guide surface extending obliquely with respect to the plugging direction.

7. The plastic package motor of claim 1, wherein the open portion is an open hole.

8. The plastic package motor according to claim 7, wherein the stator wiring portion is embedded in the open hole, and the external wiring portion extends into the open hole.

9. The plastic package motor of claim 1, wherein the open portion is provided on a left side or a right side of the plastic package member.

10. A plastic package motor according to claim 1, wherein the stator core is provided with a wiring board, the wiring board is electrically connected to the stator winding, and the stator wiring portion is provided on the wiring board.

11. The plastic package motor according to claim 10, wherein an insulating frame is disposed on the stator core, the stator winding is wound on the insulating frame, and the wiring board is disposed on the insulating frame.

12. The plastic package motor of claim 1, wherein the stator core comprises a plurality of segmented cores.

13. The plastic package motor according to claim 1, wherein the external wiring portion is connected with a plurality of wirings, and a sheath is sleeved on the plurality of wirings.

14. The plastic package motor of claim 1, wherein the plastic package comprises:

the stator plastic-sealed body is connected with the stator assembly, and the gear box seat is arranged at the rear end of the stator plastic-sealed body.

15. The plastic package motor of claim 1, wherein the wire chase is a V-groove.

16. The plastic package motor according to claim 14, wherein a front bearing and a rear bearing for supporting the rotation of the rotating shaft are respectively disposed on two sides of the rotor, the plastic package motor further comprises a front cover and a rear cover for axially positioning the front bearing and the rear bearing, and the front cover and the rear cover are both connected to the plastic package member.

17. The plastic package motor according to claim 16, wherein the rear bearing is stopped between the plastic package member and the rear cover, and an arc-shaped surface in line contact with the plastic package member is formed at a rear portion of an outer circumferential surface of the rear bearing.

18. The plastic package motor of claim 17, wherein the back cover is disposed in the middle through hole in the plastic package member, the back cover comprising:

the rear cover main body is sleeved on the rotating shaft, and the outer periphery of the rear cover main body abuts against the inner peripheral surface of the plastic packaging part;

and the rear elastic stop piece is connected with the rear cover main body and abuts against the front part of the rear bearing.

19. The plastic package motor according to claim 18, wherein a rear lubrication space is formed between the rear cover main body and the elastic stopper, and oil sludge is disposed in the rear lubrication space.

20. The plastic package motor of claim 19, further comprising:

the rear wear-resistant washer is sleeved on the rotating shaft and is positioned at the front end of the rear bearing;

the rear retainer ring is sleeved on the rotating shaft and positioned on the front side of the rear wear-resistant washer;

and the rear shockproof check ring is sleeved on the rotating shaft and is positioned between the rear wear-resistant washer and the rear check ring.

21. The plastic package motor of claim 16, wherein the front cover comprises:

the first cover body is sleeved on the rotating shaft and abuts against the front part of the front bearing, and the outer periphery of the first cover body is connected with the plastic package part;

the outer circumferential edge of the second cover body is connected with the first cover body, and the inner circumferential edge of the second cover body extends to a position between the front bearing and the rotor;

and the front elastic stop piece is connected with the second cover body and stops against the rear part of the front bearing.

22. The plastic package motor according to claim 21, wherein a front lubrication space is formed between the second cover and the front elastic stop member, and oil sludge is disposed in the front lubrication space.

23. The plastic package motor of claim 21, further comprising:

the front wear-resistant washer is sleeved on the rotating shaft and is positioned at the rear end of the front bearing;

the front retainer ring is sleeved on the rotating shaft and is positioned on the rear side of the front wear-resistant washer;

the front shockproof check ring is sleeved on the rotating shaft and is positioned between the front wear-resistant washer and the front check ring.

24. A fluid driving device comprising the plastic encapsulated motor according to any one of claims 1-23.

25. A fluid driven device as claimed in claim 24 which is a fan or fan heater.