CN108494123B

CN108494123B - Washing machine motor

Info

Publication number: CN108494123B
Application number: CN201810354532.3A
Authority: CN
Inventors: 沈恩明; 沈以撒; 俞正非
Original assignee: HUZHOU NANYANG ELECTRIC-MOTOR CO LTD
Current assignee: HUZHOU NANYANG ELECTRIC-MOTOR CO LTD
Priority date: 2018-04-19
Filing date: 2018-04-19
Publication date: 2023-06-30
Anticipated expiration: 2038-04-19
Also published as: CN108494123A

Abstract

The invention discloses a washing machine motor, which comprises a stator and a rotor; the stator is provided with an annular main body, the upper end face of the upper pin seat main body arranged on the inner side wall of the main body is provided with a wire-lapping plate and a wire-blocking plate, the wire-blocking plate is positioned on the inner side of the wire-lapping plate, and a wire-in and wire-out distinguishing plate with two ends different in height is arranged between two adjacent wire-lapping plates; the rotor comprises a flat barrel-shaped shell, the lower end surface of the shell bulges inwards, and an arch ring is arranged at the joint of the bottom end surface of the shell and the side wall of the shell; the bottom end face is provided with a diversion opening. The invention has the characteristics of easy package and transportation, better heat dissipation performance, simple stator winding, difficult damage, good assembly stability, convenient wiring, higher structural strength of the rotor and easy processing.

Description

Washing machine motor

Technical Field

The invention relates to a direct-drive washing machine motor.

Background

With the development of technology, direct-drive washing machines are developed, and the characteristics of small occupied space and low noise are more and more favored by people compared with the traditional washing machines. The direct-drive washing machine motor comprises an internal annular stator and an external coated barrel-shaped rotor, wherein the middle of the end face of the rotor is connected with a transmission shaft, and the stator is generally fixed with the outside through a pin seat on the inner side wall. The existing direct-drive motor is characterized in that the stator pin seat is relatively close to the lower part, and the part of the rotor, which is in contact with the fixed transmission shaft, is only outwards protruded in order to avoid interference with the stator pin seat, the lower end face of the rotor is uneven, so that the occupied space of the motor is relatively large, and the motor cannot be horizontally placed, so that the installation and the transportation of the motor are relatively troublesome. Meanwhile, the existing motor only carries out heat dissipation through the holes on the open end face or the lower end face of the rotor, and the structure has poor air convection effect and poor heat dissipation performance. Moreover, the inlet and outlet wires of the windings on the stator are all at the same height, so that the connection relation of the windings is difficult to distinguish, and the winding is complicated; meanwhile, wires between windings can pass through the hollow part of the stator, and enameled wires between the windings can be touched when the stator is taken and placed, so that the enameled wires are easy to deform and break down. Because the wiring terminal of the enameled wire is erected on the upper end face, an external wire connected with the wiring terminal is easy to droop and interfere with the rotor, and wiring is difficult. In addition, the stator and the pin bosses fixed outside are mostly uniformly arranged on the inner wall of the stator. When maintenance and overhaul are carried out, the stator can be installed even if the stator rotates by a certain angle due to no uniqueness, so that the assembly precision is reduced, and the situation that the wire connection is difficult to reassemble due to overlarge deviation from the original position is easy to occur. The rotor of the motor is also unreasonable in structural design, so that the structural strength is poor, and the multi-section boss is difficult to process.

Therefore, the direct-drive motor which is easy to package, transport, good in heat dissipation performance, simple in stator winding, not easy to damage, good in assembly stability, convenient to wire, high in rotor structural strength and easy to process is designed, and the direct-drive motor is a problem which needs to be solved by technicians in the industry.

Disclosure of Invention

The invention aims to provide a motor of a washing machine. The invention has the characteristics of easy package and transportation, better heat dissipation performance, simple stator winding, difficult damage, good assembly stability, convenient wiring, higher structural strength of the rotor and easy processing.

The technical scheme of the invention is as follows: a washing machine motor includes a drum-shaped rotor and a stator disposed in the rotor; the stator comprises an iron core, wherein an injection molding body is arranged on the outer surface of the iron core, the injection molding body comprises an annular main body, a pin seat is arranged on the inner side wall of the main body, and the pin seat is positioned at a position, close to the upper end surface, of the inner side wall of the main body; the wire winding device comprises a main body, a wire winding device and a wire blocking device, wherein a plurality of windings are uniformly distributed on the outer side surface of the main body, a wire lapping plate and a wire blocking plate are arranged on the upper end surface of the main body, the wire blocking plate is positioned on the inner side of the wire lapping plate, the wire lapping plates are in one-to-one correspondence with the windings, and a wire inlet and outlet distinguishing plate with two ends different in height is arranged between two adjacent wire lapping plates; the rotor comprises a flat barrel-shaped shell, a key connection round table and a connection plastic part, and magnets are uniformly distributed on the inner side wall of the shell; the lower end face of the shell comprises a bottom end face, a heat dissipation notch end face and a fixing end face which are annular and sequentially raised from outside to inside; an arch ring is arranged at the joint of the bottom end surface and the side wall of the shell; the bottom end face is provided with opening parts extending into the end face of the heat dissipation notch, the opening parts are uniformly distributed in the circumferential direction, the opening parts are provided with trimming edges, the opening parts and the end face of the heat dissipation notch form an air inlet, and the air inlet faces in the same direction as the rotation direction of the rotor; the edge of the key connection round table is connected with the fixed end surface through the connection plastic part, the fixed plastic part and the key connection round table do not protrude out of the bottom end surface, and a key hole is formed in the middle of the key connection round table.

In the above-mentioned washing machine motor, the edge of the opening is a fold line section with an obtuse angle, and one side of the fold line section is located on the diameter line of the lower end face of the casing.

In the foregoing washing machine motor, the pin bosses are unevenly distributed on the inner side wall of the main body.

In the washing machine motor, the upper end face of the main body is provided with a common terminal groove and a wiring terminal; the transformer also comprises an adapter plate, wherein the lower end face of the adapter plate is provided with an access terminal matched with the wiring terminal, the side edge of the adapter plate is provided with a connection terminal, and the connection terminal protrudes out of the winding.

In the above-mentioned washing machine motor, the fixed end face and the key connection round table are uniformly distributed with mounting holes and injection holes in the circumferential direction, and the mounting holes and the injection holes are symmetrical about the rotation axis of the key connection round table.

In the foregoing washing machine motor, the key hole is a spline hole.

Compared with the prior art, the stator pin seat is positioned on the upper part of the annular main body, so that the lower end face of the rotor can bulge towards the stator without interference, and the boss at the center of the lower end face of the rotor is higher than the bottom end face. Meanwhile, the rotor is provided with an opening part, the opening part is in a blanking structure, and the opening of the opening part is an air inlet of the motor. When the rotor rotates, the opening part plays a role of a blade, air flow is led between the stator and the rotor, the convection effect is improved, and the heat dissipation performance of the motor is improved.

The wire-lapping plate and the wire-in and wire-out distinguishing plate on the upper end surface of the stator distinguish the wire-in and wire-out heights of the enameled wires on the single winding, so that the connection relation between different windings is clearer, and the winding work is simpler; the wire baffle limits the wiring among the windings, prevents the wiring from passing through the hollow part of the annular main body, and also prevents the problem that the enameled wire among the windings is easy to touch and deform to cause faults when the stator is taken and placed. Furthermore, the stator is unevenly distributed with the externally fixed pin bosses. That is, the connection relationship of the stator to the outside is uniquely determined, and the stator is not successfully assembled in the non-design position, thereby ensuring the stability of the assembled size. And the stator is provided with the adapter plate, and the adapter plate rotates the wiring direction of the wiring terminal by 90 degrees, so that on one hand, the wiring direction is convenient for connecting an external wire, and on the other hand, the longer wiring terminal directly avoids the problem of external wire sagging and rotor interference.

The rotor is provided with the arch ring between the side wall of the shell and the lower end face, and the two sides of the arch ring are excessively connected with the fillets between the side wall of the shell and the lower end face respectively, so that a joint arch structure is formed, the strength of the joint arch structure is higher, and meanwhile, the arch ring is more resistant to collision. And the rotor is split type, and key connection round platform and the casing at center can separate processing, and single part needs the boss quantity of processing to be few, and the quantity of boss has been few, and the precision of processing can be higher to with transmission shaft complex key connection round platform's precision has been high, also improves with the assembly precision of transmission shaft correspondingly.

Furthermore, the shape of the cut edge of the opening part guides the air flow to the inner side wall of the rotor, and the heating source in the motor is the winding of the stator close to the inner side wall of the rotor, so that the heat dissipation effect is better.

In conclusion, the stator winding structure has the characteristics of easiness in packaging and transportation, good heat dissipation performance, simplicity in stator winding, difficulty in damage, good assembly stability, convenience in wiring, high structural strength of the rotor and easiness in processing.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic structural view of a stator;

FIG. 3 is a top view of a stator;

FIG. 4 is an axial half-sectional view of a stator;

FIG. 5 is a schematic structural view of a rotor;

fig. 6 is an axial half-sectional view of the rotor.

Reference numerals: 100-stator, 110-iron core, 120-injection molding body, 121-main body, 122-pin seat, 123-winding, 124-wire-lapping plate, 125-wire-blocking plate, 126-wire-in and wire-out distinguishing plate, 127-common terminal slot, 128-connecting terminal, 129-wire-blocking plate, 130-adapter plate, 131-access terminal and 132-access terminal; 200-rotor, 210-shell, 211-bottom end face, 212-heat dissipation notch end face, 213-fixed end face, 214-arch ring, 215-opening, 220-key connection round table, 221-mounting hole, 222-injection molding hole, 223-key hole, 230-connection plastic piece and 240-magnet.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to be limiting.

Examples: a washing machine motor, constructed as shown in fig. 1 to 6, includes a drum-shaped rotor 200 and a stator 100 provided in the rotor 200; the stator comprises an iron core 110, an injection molding body 120 is arranged on the outer surface of the iron core 110, the injection molding body 120 comprises an annular main body 121, a pin seat 122 is arranged on the inner side wall of the main body 121, and the pin seat 122 is positioned at a position, close to the upper end face, of the inner side wall of the main body 121; a plurality of windings 123 are uniformly distributed on the outer side surface of the main body 121, a wire-lapping plate 124 and a wire-blocking plate 125 are arranged on the upper end surface of the main body 121, the wire-blocking plate 125 is positioned on the inner side of the wire-lapping plate 124, the wire-lapping plates 124 are in one-to-one correspondence with the windings 123, and a wire-in and wire-out distinguishing plate 126 with different heights at two ends is arranged between two adjacent wire-lapping plates 124; the rotor comprises a flat barrel-shaped shell 210, a key connection round table 220 and a connection plastic part 230, wherein magnets 240 are uniformly distributed on the inner side wall of the shell 210; the lower end surface of the housing 210 includes, from outside to inside, a bottom end surface 211, a heat dissipation notch end surface 212 and a fixing end surface 213, which are all annular and sequentially raised; an arch ring 214 is arranged at the joint of the bottom end surface 211 and the side wall of the shell 210; the bottom end surface 211 is provided with an opening 215 extending into the heat dissipation notch end surface 212, the opening 215 is uniformly distributed in the circumferential direction, the opening 215 is provided with trimming edges, the opening 215 and the heat dissipation notch end surface 212 form an air inlet, and the air inlet faces the same direction as the rotation direction of the rotor 200; the edge of the key connection round table 220 is connected with the fixed end surface 213 through the connection plastic member 230, and neither the fixed plastic member nor the key connection round table 220 protrudes from the bottom end surface 211, and a key hole 223 is provided in the middle of the key connection round table 220.

The cut edge of the opening 215 is a fold line segment with an obtuse angle, and one side of the fold line segment is located on the diameter line of the lower end surface of the housing 210.

The pin bosses 122 are unevenly distributed on the inner side wall of the body 121.

The upper end face of the main body 121 is provided with a common terminal slot 127 and a wiring terminal 128; the adapter plate 130 is further included, an access terminal 131 matched with the wiring terminal 128 is disposed on the lower end surface of the adapter plate 130, a connection terminal 132 is disposed on the side edge of the adapter plate 130, and the connection terminal 132 protrudes out of the winding 123.

The fixing end surface 213 and the key connection round table 220 are uniformly provided with mounting holes 221 and injection holes 222 in the circumferential direction, and the mounting holes 221 and the injection holes 222 are symmetrical with respect to the rotation axis of the key connection round table 220.

The key holes 223 are splined.

Working principle:

after the pin seat 122 is arranged at the position of the inner side wall of the stator main body 121 close to the upper end face, the lower end face of the rotor 200 can bulge towards the direction of the stator 100 without interference, and the boss at the center of the lower end face of the rotor 200 is higher than the bottom end face 211, so that the invention can be stably laid flat, and the packaging and the transportation are more convenient.

The opening 215 of the rotor 200 is a punched structure, which makes the projection of the lower end surface of the rotor 200 in the axial direction be a complete surface, and in the washing machine, the structure can prevent water drops from falling into the motor, thereby improving the safety. More importantly, the opening of the opening 215 is the air inlet of the motor. When the rotor rotates, the opening 215 functions as a vane, and introduces air flow between the stator 100 and the rotor 200, thereby improving the heat dissipation effect of the motor.

The wire inlet and outlet of the enameled wires wound on the winding 123 of the stator are respectively lapped on the wire lapping plates 124, and the wire inlet and outlet distinguishing plates 126 between the adjacent wire lapping plates 124 have height differences at two ends, so that the wire inlet and outlet can be effectively distinguished, and the wire connection between the winding 123 is clearer. The wire baffle 125 limits the routing of the winding 123 member between it and the wire-bonding plate 124. Therefore, the enamel wire does not pass through the hollow region of the ring body 121, and the stator 100 is not easily deformed when being taken and placed, so that the fault caused thereby is avoided.

The pin bosses 122 of the stator are unevenly distributed on the inner side wall of the body 121. That is, the connection relationship of the stator to the outside is uniquely determined, and the stator is not successfully assembled in the non-design position, thereby ensuring the stability of the assembled size.

The patch panel 130 included in the stator rotates the wiring direction of the wiring terminal 128 by 90 degrees, which facilitates the connection of the external wire on the one hand, and the longer tapping terminal 128 directly avoids the problem of the external wire sagging interfering with the rotor 200 on the other hand.

The transition part of the rotor between the side wall and the lower end face of the shell 210 is provided with an arch ring 214, and the two sides of the arch ring 214 are respectively in transition with the fillets between the side wall and the lower end face of the shell, so that a joint arch structure is formed at the transition part, the strength of the joint arch structure is higher, and the arch ring 214 is more resistant to collision.

The rotor 200 is split, the central key-connected round table 220 and the shell 210 can be processed separately, the number of bosses required to be processed by a single part is small, the number of bosses is small, the processing precision can be higher, the precision of the key-connected round table 220 matched with the transmission shaft is high, and the assembly precision of the key-connected round table and the transmission shaft is correspondingly improved.

Claims

1. A washing machine motor, characterized in that: comprises a barrel-shaped rotor (200) and a stator (100) arranged in the rotor (200); the stator comprises an iron core (110), wherein an injection molding body (120) is arranged on the outer surface of the iron core (110), the injection molding body (120) comprises an annular main body (121), a pin seat (122) is arranged on the inner side wall of the main body (121), and the pin seat (122) is positioned at a position, close to the upper end face, of the inner side wall of the main body (121); a plurality of windings (123) are uniformly distributed on the outer side surface of the main body (121), a wire-bonding plate (124) and a wire-blocking plate (125) are arranged on the upper end surface of the main body (121), the wire-blocking plate (125) is positioned on the inner side of the wire-bonding plate (124), the wire-bonding plates (124) are in one-to-one correspondence with the windings (123), and a wire-in and wire-out distinguishing plate (126) with two different heights at two ends is arranged between two adjacent wire-bonding plates (124); the rotor comprises a flat barrel-shaped shell (210), a key connection round table (220) and a connection plastic piece (230), and magnets (240) are uniformly distributed on the inner side wall of the shell (210); the lower end face of the shell (210) comprises a bottom end face (211), a heat dissipation notch end face (212) and a fixing end face (213), wherein the bottom end face (211), the heat dissipation notch end face (212) and the fixing end face are all annular and sequentially raised from outside to inside; an arch ring (214) is arranged at the joint of the bottom end surface (211) and the side wall of the shell (210); the bottom end surface (211) is provided with opening parts (215) which extend into the radiating notch end surface (212), the opening parts (215) are uniformly distributed in the circumferential direction, the opening parts (215) are provided with trimming edges, the opening parts (215) and the radiating notch end surface (212) form an air inlet, and the air inlet faces in the same direction as the rotation direction of the rotor (200); the edge of the key connection round table (220) is connected with the fixed end surface (213) through the connection plastic part (230), the fixed plastic part and the key connection round table (220) do not protrude out of the bottom end surface (211), and a key hole (223) is arranged in the middle of the key connection round table (220).

2. A washing machine motor according to claim 1, wherein: the edge of the opening (215) is a broken line section with an obtuse angle, and one side of the broken line section is positioned on the diameter line of the lower end surface of the shell (210).

3. A washing machine motor according to claim 1, wherein: the pin bosses (122) are unevenly distributed on the inner side wall of the main body (121).

4. A washing machine motor according to claim 1, wherein: the upper end face of the main body (121) is provided with a common terminal groove (127) and a wiring terminal (128); the transformer also comprises an adapter plate (130), wherein an access terminal (131) matched with the wiring terminal (128) is arranged on the lower end face of the adapter plate (130), a connection terminal (132) is arranged on the side edge of the adapter plate (130), and the connection terminal (132) protrudes out of the winding (123).

5. A washing machine motor according to claim 1, wherein: the fixing end face (213) and the key connection round table (220) are uniformly provided with mounting holes (221) and injection holes (222) in the circumferential direction, and the mounting holes (221) and the injection holes (222) are symmetrical with respect to the rotation axis of the key connection round table (220).

6. A washing machine motor according to claim 1, wherein: the key holes (223) are splined.