WO2021258497A1

WO2021258497A1 - Improved flat series excited machine

Info

Publication number: WO2021258497A1
Application number: PCT/CN2020/105655
Authority: WO
Inventors: 张波; 赵冥; 钟远刚; 刘林; 易恭才; 闫鲲
Original assignee: 东莞市力辉马达有限公司
Priority date: 2020-06-22
Filing date: 2020-07-30
Publication date: 2021-12-30
Also published as: CN111711289A

Abstract

An improved flat series excited motor, comprising a stator assembly, a rotor assembly, a motor front support (18), and a motor rear support (7). The stator assembly is provided with a stator iron core (3), the outer diameter d1 of the stator iron core (3) is 100-200 mm, the thickness d2 of the stator iron core (3) is 5-20 mm, and the inner diameter d3 of the stator iron core (3) is 60-110 mm; the rotor assembly comprises a rotor iron core (4), a commutator (5), and an electric brush mounting plate (6), multiple electric brushes are mounted on the electric brush mounting plate (6), the outer diameter d5 of the rotor iron core (4) is 40-150 mm, the winding mode of each rotor enameled wire (9) and winding slots (40) is that the number of the winding slots (40) is 16, and the number that the rotor enameled wire (9) extends across the slots is four. By improving the stator assembly, the rotor assembly, and the mounting structures of the stator assembly and the rotor assembly, the height of the series excited motor is reduced to a maximum extent, and when all parts of the series excited motor are assembled, the distance between the motor front support (18) and the motor rear support (7) is smaller than or equal to 66 mm.

Description

An improved flat series motor

Technical field

The invention relates to the technical field of series-excited motors, in particular to an improved flat series-excited motors.

Background technique

The series motor mainly includes a stator assembly and a rotor assembly.

The stator assembly includes a stator core, a stator enameled wire and a stator bobbin for winding a set sub-enameled wire. With the continuous development and progress of society, people’s quality of life continues to improve, and the requirements for motors in the home appliance industry are also constantly increasing. The development trend requires motors to be small in size, large in torque, and high in speed. The volume of finished electrical appliances is relatively small in space, large in torque, and in speed. high. Traditionally designed high-power home appliances motors are 98 series, 95 series and 88 series; when the motor power needs to be more than 2000W, the stack thickness of the stator core needs to be more than 40mm, and the manufacturing process of the stator core of more than 40mm is difficult and the defect rate is high.

The rotor part of the motor is a conversion device used by the series motor to convert electrical energy into electrical energy. The rotor part of the motor mainly includes a rotor core, a commutator and multiple sets of rotor enameled wires. One set of rotor enameled wires corresponds to a pair of magnetic poles in the stator part of the motor. The stator core of the traditional series motor is 2 poles, and the outer diameter and bottom diameter of the rotor core are made small. The bottom diameter of the rotor core is generally 15-25mm, which corresponds to the number of winding slots of the rotor core Generally 10 slots or 12 slots, that is, the number of spanning slots corresponding to the rotor enameled wire is 5 slots or 6 slots. The winding process is adopted for full pitch winding, that is, the rotor enameled wire almost spans the entire outer diameter of the stator core. The distance between the upper part of the commutator and the iron core of the rotor is long.

Summary of the invention

In view of the shortcomings of the prior art, the purpose of the present invention is to provide an improved flat series motor, improve the stator assembly, rotor assembly and the installation structure of the two, so as to minimize the height of the series motor, When the components of the motor are assembled, the distance between the front support of the motor and the rear support of the motor is less than or equal to 66 mm.

In order to achieve the above purpose, the technical solution adopted by the present invention is: an improved flat series motor, including a stator assembly, a rotor assembly, a motor front support and a motor rear support, and the motor front support and the motor rear support are arranged in a vertical alignment, The stator assembly is arranged between the front support of the motor and the rear support of the motor. The rotor assembly rotates and cooperates with the stator assembly. The stator assembly is characterized in that the stator assembly is provided with a stator bobbin, a stator enameled wire wound on the stator bobbin, and a stator installed on the stator bobbin. Iron core

The transverse section of the stator core is annular, the stator core is provided with at least four threading slots, the four threading slots are distributed in a circular interval, and the angle between the center point of each threading slot and the center point of the stator core is 90°, the stator The outer diameter d1 of the iron core is 100-200mm, the thickness d2 of the stator iron core is 5-20mm, and the inner diameter d3 of the stator iron core is 60-110mm;

The rotor assembly includes a rotor core, a commutator, and a brush mounting plate arranged in order from top to bottom. The rear bracket of the motor is located below the brush mounting plate. Both the rotor core and the brush mounting plate are formed with a supply in the middle. The shaft hole through which the commutator penetrates, the upper part of the commutator penetrates the shaft hole of the rotor core, the lower part of the commutator penetrates the shaft hole of the brush mounting plate, and the brush mounting plate is installed with multiple axes The brushes are distributed in an array, and each brush is in frictional contact with the commutator. At least four sets of rotor enameled wires are wound around the rotor core. The outer edge of the rotor core is provided with multiple winding slots. The number of brushes is consistent with that of the stator. Corresponding to the number of poles of the iron core;

The outer diameter d5 of the rotor core is 40-150mm, and the four groups of rotor enameled wires are respectively wound in the corresponding winding grooves, and the winding method of each rotor enameled wire and the winding groove is set to any one of the following structures,

1) The number of winding slots is 16, and the number of cross slots of the rotor enameled wire is 4;

2) The number of winding slots is 32, and the number of cross slots of the rotor enameled wire is 8;

3) The number of winding grooves is 64, and the number of cross grooves of the rotor enameled wire is 16.

In a further technical solution, the stator wire frame is provided with an upper split frame and a lower split frame. The shielding parts are arranged in pairs or inserted to form an enameled wire insulating part, the outer edge of the enameled wire insulating part is provided with a core slot for accommodating the stator core, and the inner edge of the enameled wire insulating part is provided with a plurality of accommodating places In the wire placement grooves of the stator enameled wire, each wire placement groove is respectively arranged up and down with the corresponding threading groove.

In a further technical solution, one of the upper shielding part and the lower shielding part is provided with a mating mating part, and the other has a mating slot at a position corresponding to the mating mating part;

An upper line block is provided on the inner side of the upper split frame, and a lower line block is provided on the inner side of the lower split frame, and the upper line block and the lower line block are arranged to be aligned or inserted to form a line block portion , The wire placement groove is formed between the wire blocking portion and the enameled wire insulation portion;

The upper part of the upper split frame extends outwards and is formed with an upper guide part, and the upper part of the lower split frame extends outwards and is formed with a lower guide part, at least when the upper shielding part and the lower shielding part are aligned or inserted , The core slot between the upper guide part, the lower guide part and the enameled wire insulation part;

A winding part is formed between two adjacent wire placement grooves, and the winding part includes an upper winding part formed on the upper split frame and a lower winding part formed on the lower split frame;

The transverse section of the core slot is "C" type;

The transverse cross-section of the wire slot is "mouth" or "O" shape;

The number of wire slots is 4, 6, or 8.

In a further technical solution, the stator bobbin is provided with a terminal positioning portion at a position corresponding to the wire placement groove, and the stator assembly is provided with a pierced terminal. The pierced terminal includes a male terminal and a female terminal. One end is electrically connected to the male terminal, the other end of the female terminal is connected to the terminal positioning part, the female terminal has at least one piercing tip for piercing the stator enameled wire, and the end of the male terminal is provided with a conductive lead , To connect to the external power supply, the transverse section of the pierced terminal is L-shaped.

In a further technical solution, the thickness of the rotor core is 8-20mm, and the bottom diameter of the rotor enameled wire is 40-100mm, at least when each group of the rotor enameled wire is wound on the corresponding winding groove, The rotor enameled wire is located on the outside of the commutator. The distance d4 from the lower end of the commutator to the lower end of the rotor core is d4≤20mm, and the outer diameter d7 of the commutator is smaller than the bottom diameter d6 of the rotor core.

In a further technical solution, an insulating member is provided between the brush mounting plate and the motor rear bracket, and each of the brushes includes a brush box mounted on the brush mounting plate and embedded in the brush box For the brushes, the rear bracket of the motor is formed with a brush avoidance groove, and the insulator protrudes to the brush avoidance groove. The lower part of the brush box has a riveting pin, which extends downward through the brush mounting plate and is riveted to the electric brush. On the lower end surface of the brush mounting plate, the riveting pin is located above the insulating member.

In a further technical solution, the linear distance d8 in the vertical direction between the brush mounting plate and the motor rear bracket is ≤2.5mm, and the linear distance between the end of the riveting pin and the motor rear bracket in the vertical direction d9≤ 2.0mm, the linear distance between the rotor core and the motor rear bracket in the vertical direction is 15-30mm.

In a further technical solution, the insulating member is an integrally formed ring-shaped insulating sheet, and the insulating sheet is respectively protrudingly formed with brush insulating parts at positions corresponding to the brush avoiding grooves, and each brush insulating part is connected to the brush avoiding grooves. The size and shape of the groove are matched;

The brush mounting plate is provided with riveting holes at the position corresponding to each brush box. The brush box has a brush mounting cavity, the upper end of the brush box has a conductive connection part, and the upper part of the brush box has a baffle part. At least after the brush is installed in the brush installation cavity of the brush box, the baffle portion is bent inward and the conductive connection portion is bent downward to close the rear end of the brush installation cavity.

In a further technical solution, the transverse cross-section of the riveting hole is in the shape of an arch bridge, and the riveting hole includes a riveting plug segment that matches the riveting pin and an arch arc segment formed by extending inwardly from the riveting plug segment. Two opposite ends of the arc section respectively form a boss with the plug-in section, and the arc sections of a pair of riveting holes corresponding to the two riveting pins are arranged opposite to each other;

The length of the riveting pin is half of the width of the brush installation cavity. At least after the brush is installed in the brush installation cavity of the brush box, the two riveting pins abut against each other.

In a further technical solution, each end of the motor front bracket is respectively provided with a positioning connector, and each positioning connector extends outward to form a support connecting ear for supporting home appliances, the motor front bracket and the motor rear bracket The distance is ≤66mm.

After adopting the above structure, the advantages of the present invention compared with the prior art are:

The present invention reduces the height of the series motor by improving the stator assembly, the rotor assembly and the installation structure of the two, so as to minimize the height of the series motor. When the various parts of the series motor are assembled, the distance between the front support of the motor and the rear support of the motor is ≤66mm .

Description of the drawings

The present invention will be further described below in conjunction with the drawings and embodiments.

Figure 1 is a schematic diagram of the structure of the present invention;

Figure 2 is a schematic diagram of the structure of the stator assembly of the present invention;

Fig. 3 is a schematic diagram of the structure of a stator core in the prior art;

Figure 4 is a top view of the stator core of the first embodiment of the present invention;

Figure 5 is a top view of the stator core of the second embodiment of the present invention;

Figure 6 is a side view of the stator core of the present invention;

FIG. 7 is a schematic diagram of the three-dimensional structure of the stator core of the present invention;

Figure 8 is a schematic diagram of the structure of the stator wire frame of the present invention;

Figure 9 is a schematic diagram of an exploded structure of the stator bobbin of the present invention;

Figure 10 is a schematic diagram of the structure of the upper split wire rack of the present invention;

Figure 11 is a schematic diagram of the structure of the lower split wire frame of the present invention;

Figure 12 is a schematic view of the structure of the pierced terminal of the present invention;

Figure 13 is a schematic diagram of the structure of the rotor assembly and the motor rear support of the present invention;

Figure 14 is a schematic diagram of the assembly of the commutator and the rotor core of the present invention;

15 is a schematic diagram of the assembly of the commutator, the brush mounting plate, and the rear bracket of the motor according to the present invention;

Figure 16 is a side view of the commutator and the rotor core in the prior art after being assembled;

Figure 17 is a side view of the commutator of the present invention and the rotor core after being assembled;

18 is a schematic diagram of the winding structure of the rotor enameled wire and the winding groove in the prior art;

19 is a schematic diagram of the winding structure of the rotor enameled wire and the winding groove of the present invention;

Figure 20 is a schematic diagram of the assembly of a brush box and a brush mounting plate in the prior art;

21 is a schematic diagram of the assembly of the brush box, the brush mounting plate, and the rear bracket of the motor according to the present invention;

Fig. 22 is an enlarged schematic diagram of the structure at A in Fig. 21;

Figure 23 is an exploded structural diagram of the brush box, brush mounting plate, and motor rear bracket of the present invention;

Figure 24 is a front view of the brush box, brush mounting plate, and motor rear bracket of the present invention;

Figure 25 is a schematic view of the structure of the brush box of the present invention;

Figure 26 is a schematic diagram of the riveting of a brush box and a brush mounting plate in the prior art;

Figure 27 is a schematic diagram of the riveting of the brush box and the brush mounting plate of the present invention;

Figure 28 is a schematic diagram of the structure of the brush mounting plate of the present invention;

Fig. 29 is an enlarged schematic diagram of the structure at B in Fig. 28.

detailed description

The following are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby.

As shown in Figures 1 to 29, an improved flat series motor provided by the present invention includes a stator assembly, a rotor assembly, a motor front bracket 18 and a motor rear bracket 7, a motor front bracket 18 and a motor rear bracket 7 that are aligned up and down. In combination, the stator assembly is arranged between the motor front support 18 and the motor rear support 7, and the rotor assembly rotates and cooperates with the stator assembly.

The stator assembly is provided with a stator bobbin 1, a stator enameled wire 2 wound on the stator bobbin 1, and a stator iron core 3 installed on the stator bobbin 1.

The installation part of the stator core 3: as shown in Figs. 2-6, the transverse cross section of the stator core 3 is annular, and the stator core 3 is provided with at least four threading slots 30, which are distributed in annular intervals. The angle between the center point of each threading groove 30 and the center point of the stator core 3 is 90°, the outer diameter d1 of the stator core 3 is 100-200mm, the thickness d2 of the stator core 3 is 5-20mm, and the stator core The inner diameter d3 of 3 is 60-110mm. The present invention reduces the thickness of the stator core 3 by increasing the outer diameter of the stator core 3, so that the height of the motor is greatly reduced, the volume is reduced, and the requirements for the miniaturization of terminal home appliances are met; , While the outer diameter of the stator core 3 is enlarged, the present invention adopts the structure of the four-position slot 10 to solve the problem of large span and low life of the two-pole coil (as shown in Figure 3). The single-phase four-pole stator is adopted The motor power of the iron core structure is up to 2000W.

In a feasible embodiment, the outer diameter d1 of the stator core 3 is 100-120 mm, the thickness d2 of the stator core 3 is 10-18 mm, and the inner diameter d3 of the stator core 3 is 60-70 mm.

In a specific embodiment, the outer diameter d1 of the stator core 3 is 105 mm, the thickness d2 of the stator core 3 is 15 mm, and the inner diameter d3 of the stator core 3 is 67 mm.

In another feasible embodiment, the outer diameter d1 of the stator core 3 is 120-140 mm, the thickness d2 of the stator core 3 is 10-15 mm, and the inner diameter d3 of the stator core 3 is 70-80 mm.

In a specific embodiment, the outer diameter d1 of the stator core 3 is 120 mm, the thickness d2 of the stator core 3 is 10 mm, and the inner diameter d3 of the stator core 3 is 76 mm.

In another feasible embodiment, the outer diameter d1 of the stator core 3 is 140-160 mm, the thickness d2 of the stator core 3 is 7-15 mm, and the inner diameter d3 of the stator core 3 is 80-90 mm.

In a specific embodiment, the outer diameter d1 of the stator core 3 is 140 mm, the thickness d2 of the stator core 3 is 10 mm, and the inner diameter d3 of the stator core 3 is 81 mm.

In another feasible embodiment, the outer diameter d1 of the stator core 3 is 160-200 mm, the thickness d2 of the stator core 3 is 7-15 mm, and the inner diameter d3 of the stator core 3 is 90-110 mm.

In a specific embodiment, the outer diameter d1 of the stator core 3 is 160 mm, the thickness d2 of the stator core 3 is 7 mm, and the inner diameter d3 of the stator core 3 is 95.5 mm.

Stator wire frame 1 part: The stator wire frame 1 is provided with an upper split frame 10 and a lower split frame 11, the lower part of the upper split frame 10 has an upper shielding part 100, and the upper part of the lower split frame 11 has a lower shielding part 110. The upper shielding portion 100 and the lower shielding portion 110 are arranged to be aligned or inserted to form an enameled wire insulating portion 12. The outer edge of the enameled wire insulating portion 12 is provided with a core slot 13 for accommodating the stator core 3, and the enameled wire is insulated The inner edge of the portion 12 is provided with a plurality of wire placement grooves 14 for accommodating the stator enameled wire 2, and each wire placement groove 14 is arranged up and down with the corresponding threading groove 30, and the stator enameled wire package 2 passes through the enameled wire package. The insulating part 12 is directly insulated from the stator core 3. Compared with the stator bobbin 1 in the prior art, it does not require additional insulating sheets. Its compact structure makes the stator assembly smaller in size, low in height and high in practicability.

The transverse cross section of the core slot 13 is "C" shape, the transverse cross section of the wire slot 14 is "mouth" or "O" shape, and the stator enameled wire 2 is accommodated in the wire slot 14, so that the stator assembly is assembled. , The stator enameled wire 2 and the stator core 3 are on the same horizontal plane, and the structure is compact, so that the stator assembly tends to be miniaturized and has high practicability. In particular, the number of wire placement slots 14 is 4, 6, or 8, and the four wire slots 30 of the stator core 3 are correspondingly consistent with the number of wire placement slots 14. The stator core in the present invention, The stator bobbin and the pierced terminal are suitable for four-pole series motors, six-phase series motors or eight-phase series motors. In order to clearly explain the working principle of the present invention, the embodiments and drawings of the present invention use four-pole Take the motor as an example.

In a preferred embodiment, one of the upper shielding part 100 and the lower shielding part 110 is provided with a mating mating part 1000, and the other side is provided with a mating slot 1100 at a position corresponding to the mating mating part 1000; The inner side of the body frame 10 is provided with an upper wire block 101, and the inner side of the lower split frame 11 is provided with a lower wire block 111. The wire part, the wire-retaining groove 14 is formed between the wire blocking part and the enameled wire insulation part 12; A lower guiding portion 112 is formed extending outwards. At least when the upper shielding portion 100 and the lower shielding portion 110 are aligned or mated, the upper guiding portion 102, the lower guiding portion 112 and the enameled wire insulation portion 12 The core slot 13; a winding portion is formed between two adjacent wire slots 14, and the winding portion includes an upper winding portion 103 formed on the upper split frame 10 and formed on the lower split frame 11 The lower winding part 113; to facilitate the standard winding equipment to wind the stator enameled wire 2 on the stator bobbin 1.

In a further technical solution, the stator bobbin 1 is provided with a terminal positioning portion 15 at a position corresponding to the wire placement groove 14, and the stator assembly is provided with a piercing terminal 16. The piercing terminal 16 includes a male terminal 160 and a female terminal. Terminal 161, one end of the female terminal 161 is electrically connected to the male terminal 160, the other end of the female terminal 161 is connected to the terminal positioning portion 15, and the female terminal 161 has at least one puncture for piercing the stator enameled wire 2 With the broken tip 1610, the end of the male terminal 160 is provided with a conductive lead 1600 for connecting to an external power source. The transverse section of the pierced terminal 16 is L-shaped. Compared with the traditional in-line terminal, the piercing of the present invention The structure of the terminal 16 further reduces the height of the entire stator assembly to reduce the overall height of the series motor.

As shown in Figures 13-19, the rotor assembly includes a rotor core 4, a commutator 5, and a brush mounting plate 6 arranged in sequence from top to bottom. The motor rear bracket 7 is located below the brush mounting plate 6. Both the rotor core 4 and the brush mounting plate 6 are formed with a shaft hole for the commutator 5 to pass through. The upper part of the commutator 5 passes through the shaft hole of the rotor core 4, and the lower part of the commutator 5 passes through Set in the shaft hole of the brush mounting plate 6, the brush mounting plate 6 is equipped with a plurality of brushes distributed in an axial array, and each brush is in frictional contact with the commutator 5, and the rotor core 4 is wound with at least four The rotor enameled wire 9 is assembled, and the outer edge of the rotor core 4 is provided with a plurality of winding grooves 40, and the number of brushes corresponds to the number of the rotor enameled wire 9.

The installation structure of the upper part of the commutator 5: where, as shown in the figure, the outer diameter d5 of the rotor core 3 is 40-150mm, the thickness of the rotor core 4 is 8-20mm, and the bottom diameter of the rotor enameled wire 9 is 40 -100mm, at least when the rotor enameled wires 9 of each group are respectively wound on the corresponding winding grooves 40, the rotor enameled wires 9 are located on the outer side of the commutator 5 from the lower end surface of the commutator 5 to the lower part of the rotor core 4 The distance d4 of the end surface of the rotor d4≤20mm, the number of winding grooves 40 set in the winding mode of each rotor enameled wire 9 and the winding groove 40 is 16, and the number of cross grooves of the rotor enameled wire 9 is 4.

The present invention reduces the thickness of the rotor core 3 by increasing the outer diameter of the rotor core 3, and at the same time, as the outer diameter of the rotor core 3 increases, the total number of winding slots 40 of the rotor core 3 can be increased, and the rotor enameled wire The number of slots across 9 is reduced relative to the total number of winding slots 40, so that the bottom diameter of the rotor enameled wire 9 becomes smaller, that is, the rotor enameled wire 9 gradually moves outwards of the rotor core 3, and at least the rotor enameled wire 9 in each group is wound separately When set on the corresponding winding groove 40, the rotor enameled wire 9 is located outside the shaft hole of the rotor core 3, and the upper part of the commutator 5 can be pressed down closer to the rotor core 3 to reduce the height of the entire rotor assembly , To realize the demand for miniaturization of the whole appliance motor.

In a preferred embodiment, the outer diameter d7 of the commutator 5 is smaller than the bottom diameter d6 of the rotor core 4, which further enables the commutator 5 to be closer to the rotor core 3. Each of the rotor enameled wires 9 is respectively wound in the corresponding winding groove 40 in a half-flower basket winding manner.

In other embodiments, the winding method of each rotor enameled wire 9 and the winding groove 40 is set to the following structure can also be set as the number of winding grooves 40 is 32, the number of cross grooves of the rotor enameled wire 9 is 8, and the winding The number of slots 40 is 64, and the number of slots across the rotor enameled wire 9 is 16. In order to clearly explain the principle of the present invention, the following embodiments all take the number of winding slots 40 as 16 and the number of spanning slots of the rotor enameled wire 9 as 4 as a reference standard, which will not be repeated here.

The installation structure of the lower part of the commutator 5: In practical applications, in order to meet the needs of miniaturization of terminal home appliances and reduce the overall height of the series-excited motor, the present invention changes the traditional brush installation structure to leave the commutator 5 empty The installation space makes the lower part of the commutator 5 closer to the brush mounting plate 6.

Specifically, an insulating member 17 is provided between the brush mounting plate 6 and the motor rear bracket 7, and each of the brushes includes a brush box 8 mounted on the brush mounting plate 6 and a brush box 8 embedded in the brush. For the brushes in the box 8, the rear frame 7 of the motor is formed with a brush avoidance groove 70, the insulator 17 protrudes to the brush avoidance groove 70, the lower part of the brush box 8 has a riveting pin 80, and the riveting pin 80 extends downward Passing through the brush mounting plate 6 and riveting to the lower end surface of the brush mounting plate 6, the riveting pin 80 is located above the insulating member 17.

In practical applications, the present invention passes the brush box 8 through the brush mounting plate 6 and riveted to the lower end surface of the brush mounting plate 6, thereby reducing the overall height of the brush mounting structure to reduce the overall height of the series motor Purpose, and the brush box 8 is insulated from the motor rear support 7 by the insulating member 17, so as to meet the safety requirements. Specifically, the brush mounting plate 6 and the motor rear support 7 have a linear distance d1 in the vertical direction. ≤2.5mm, after the brush box 8 is riveted, the straight-line distance d2 between the end of the riveting pin 80 and the motor rear support 7 in the vertical direction is ≤2.0mm.

Preferably, after the upper and lower parts of the commutator 2 are respectively installed, the linear distance between the rotor core 4 and the motor rear support 7 in the vertical direction is 15-30 mm.

Wherein, the insulating member 17 is an integrally formed ring-shaped insulating sheet, and the insulating sheet corresponding to the position of each brush avoiding groove 70 is respectively protrudingly formed with a brush insulating portion 170, each brush insulating portion 170 and the brush avoiding The size and shape of the groove 70 are adapted to each other. The insulating sheet is formed with a number of button holes, and the insulating sheet is fastened to the upper part of the rear bracket 7 of the motor through the button holes. This makes the overall brush installation structure more compact and reduces the cost of the brush installation structure. high.

The brush mounting plate 6 is provided with a riveting hole 60 at a position corresponding to each brush box 8. The brush box 8 has a brush mounting cavity 83, the upper end of the brush box 8 has a conductive connection part 81, and the brush box 8 There is a baffle part 82 on the upper part of the brush. At least after the brush is installed in the brush installation cavity 83 of the brush box 8, the baffle part 82 is bent inward and the conductive connection part 81 is bent downward to close the brush installation cavity. 83 to prevent the brush from sliding out of the brush box 8 in the working state.

The transverse cross-section of the riveting hole 60 is in the shape of an arch bridge. The riveting hole 60 includes a riveting plug section 600 that fits the riveting pin 80 and an arch arc section 601 formed by extending inwardly from the riveting plug section 600. The arch The two opposite ends of the arc section 601 respectively form a boss 602 with the plug-in section. The arc sections 601 of a pair of riveting holes 60 corresponding to the two riveting pins 80 are arranged opposite to each other. The length of 80 is half of the width of the brush installation cavity 83, at least after the brush is installed in the brush installation cavity 83 of the brush box 8, the actual application of the riveting pin 80 is inserted into the riveting plug section 300, the brush box 8 The upper part is clamped on the boss 602, and the two riveting pins 80 abut against each other, so that the lower part of the brush box 8 and the upper part of the brush box 8 are always the same width, which solves the problem of the large gap between the carbon brush and the brush box 8. The problem, working noise is significantly reduced. During the installation process, the insertion depth of the two left and right riveting pins 80 is always the same. Secondly, it is preferable that the arch segments 601 of a pair of riveting holes 60 corresponding to the two riveting pins 80 are arranged opposite to each other, such as 25-29, compared with the structure in the prior art where the arc segment 601 is arranged outwards and the plug-in segment is arranged inwards, the riveting gap of the brush mounting plate 6 of the present invention is large.

As shown in FIG. 1, each end of the motor front bracket 18 is provided with a positioning connector 180, and each positioning connector 180 extends outward to form a support connecting ear 181. When the series motor and the home appliance body are installed, The supporting connecting ear 181 can be used to support the main body of the household electrical appliance, and has a simple structure and high practical performance. Preferably, after the components of the present invention are assembled, the distance between the motor front bracket 18 and the motor rear bracket 7 is ≤ 66 mm.

The above content is only the preferred embodiments of the present invention. For those of ordinary skill in the art, according to the ideas of the present invention, there will be changes in the specific implementation and the scope of application. limits.

Claims

An improved flat series motor, including a stator assembly, a rotor assembly, a motor front support (18), a motor rear support (7), a motor front support (18) and a motor rear support (7) arranged in an up-and-down arrangement, and the stator assembly Between the front support (18) of the motor and the rear support (7) of the motor, the rotor assembly rotates and cooperates with the stator assembly. Stator enameled wire (2) and stator core (3) installed on the stator bobbin (1);

The transverse section of the stator core (3) is annular, the stator core (3) is provided with at least four threading slots (30), the four threading grooves (30) are distributed in an annular interval, and the center point of each threading slot (30) The included angle with the center point of the stator core (3) is 90°, the outer diameter d1 of the stator core (3) is 100-200mm, the thickness d2 of the stator core (3) is 5-20mm, and the stator core ( 3) The inner diameter d3 is 60-110mm;

The rotor assembly includes a rotor core (4), a commutator (5) and a brush mounting plate (6) arranged in order from top to bottom. The motor rear bracket (7) is located below the brush mounting plate (6) , The rotor core (4) and the brush mounting plate (6) are each formed with a shaft hole for the commutator (5) to pass through, and the upper part of the commutator (5) penetrates the rotor core (4) The lower part of the commutator (5) penetrates the shaft hole of the brush mounting plate (6). The brush mounting plate (6) is equipped with a plurality of brushes distributed in an axis array, and each brush is connected to the The commutator (5) is frictionally matched, the rotor core (4) is wound with at least four sets of rotor enameled wires (9), the outer edge of the rotor core (4) is provided with a plurality of winding slots (40), and electric brushes The number corresponds to the number of poles of the stator core (3);

The outer diameter d5 of the rotor core (1) is 40-150mm, and the four groups of rotor enameled wires (9) are respectively wound in the corresponding winding groove (40), and each rotor enameled wire (9) and the winding groove (40) are wound The line mode is set to any one of the following structures,

1) The number of winding grooves (40) is 16, and the number of spanning grooves of the rotor enameled wire (9) is 4;

2) The number of winding grooves (40) is 32, and the number of spanning grooves of the rotor enameled wire (9) is 8;

3) The number of winding grooves (40) is 64, and the number of spanning grooves of the rotor enameled wire (9) is 16.
The improved flat series motor according to claim 1, characterized in that: the stator wire frame (1) is provided with an upper split frame (10) and a lower split frame (11), and the upper split frame The lower part of (10) has an upper shielding part (100), the upper part of the lower split frame (11) has a lower shielding part (110), the upper shielding part (100) and the lower shielding part (110) are arranged in pairs or by inserting An enameled wire insulating part (12) is formed, the outer edge of the enameled wire insulating part (12) is provided with a core slot (13) for accommodating the stator core (3), and the inner edge of the enameled wire insulating part (12) is provided with multiple There are two wire placement grooves (14) for accommodating the stator enameled wire (2), and each wire placement groove (14) is respectively arranged up and down with the corresponding wire passing groove (30).
An improved flat series motor according to claim 2, characterized in that: one of the upper shielding part (100) and the lower shielding part (110) is provided with a mating mating part (1000) and the other There should be a counter slot (1100) at the position of the mating part (1000);

The inner side of the upper split frame (10) is provided with an upper line block (101), the inner side of the lower split frame (11) is provided with a lower line block (111), the upper line block (101) and The lower wire blocking block (111) is arranged in a pair or inserted to form a wire blocking portion, and the wire arranging groove (14) is formed between the wire blocking portion and the enameled wire insulating portion (12);

The upper part of the upper split frame (10) is formed with an upper guiding part (102) extending outwards, and the upper part of the lower split frame (11) is formed with a lower guiding part (112) extending outwards, at least on the upper shield When the upper guide portion (102), the lower guide portion (112) and the enameled wire insulation portion (12) are arranged in a paired arrangement or mated with the lower shielding portion (110) (13);

A winding part is formed between two adjacent wire placement grooves (14). The winding part includes an upper winding part (103) formed on the upper split frame (10) and an upper winding part (103) formed on the lower split frame (11). ) The lower winding part (113);

The transverse section of the core slot (13) is "C" type;

The transverse cross-section of the wire slot (14) is in the shape of "mouth" or "O";

The number of wire slot (14) is 4, 6, or 8.
The improved flat series motor according to claim 2, characterized in that: the stator bobbin (1) is provided with a terminal positioning portion (15) at a position corresponding to the wire placement groove (14), and the stator The assembly is provided with a piercing terminal (16). The piercing terminal (16) includes a male terminal (160) and a female terminal (161). One end of the female terminal (161) is electrically connected to the male terminal (160), The other end of the female terminal (161) is connected to the terminal positioning portion (15), the female terminal (161) has at least one piercing tip (1610) for piercing the stator enameled wire (2), and the male terminal ( The end of 160) is provided with a useful conductive lead (1600) for connecting to an external power source, and the transverse cross-section of the piercing terminal (16) is L-shaped.
The improved flat series motor according to claim 1, characterized in that the thickness of the rotor core (4) is 8-20mm, and the bottom diameter of the rotor enameled wire (9) is 40-100mm, At least when the rotor enameled wires (9) of each group are respectively wound on the corresponding winding grooves (40), the rotor enameled wires (9) are located on the outside of the commutator (5) and the lower part of the commutator (5) The distance d4 from the end surface of the rotor core (4) to the lower end surface of the rotor core (4) is ≤20mm, and the outer diameter d7 of the commutator (5) is smaller than the bottom diameter d6 of the rotor core (4).
An improved flat series motor according to claim 1, characterized in that: an insulating member (17) is provided between the brush mounting plate (6) and the motor rear bracket (7), and each The brush includes a brush box (8) installed on the brush mounting plate (6) and a brush embedded in the brush box (8). The rear bracket (7) of the motor is formed with a brush avoiding groove (70). ), the insulator (17) protrudes to the brush avoidance groove (70), the lower part of the brush box (8) has a riveting pin (80), and the riveting pin (80) extends downward through the brush mounting plate ( 6) and riveted to the lower end surface of the brush mounting plate (6), and the riveting pin (80) is located above the insulating member (17).
The improved flat series motor according to claim 6, characterized in that the linear distance d8 ≤ 2.5mm in the vertical direction between the brush mounting plate (6) and the motor rear bracket (7), so The linear distance d9 ≤ 2.0mm between the end of the riveting pin (80) and the motor rear bracket (7) in the vertical direction, and the linear distance between the rotor core (4) and the motor rear bracket (7) in the vertical direction It is 15-30mm.
The improved flat series motor according to claim 6, characterized in that: the insulating member (17) is an integrally formed ring-shaped insulating sheet, and the insulating sheet corresponds to the position of each brush avoiding groove (70) A brush insulation part (170) is protrudingly formed at each position, and each brush insulation part (170) is adapted to the size and shape of the brush avoiding groove (70);

The brush mounting plate (6) is provided with a riveting hole (60) at the position corresponding to each brush box (8). The brush box (8) has a brush mounting cavity (83), and the upper end of the brush box (8) The part has a conductive connection part (81), the upper part of the brush box (8) has a baffle part (82), at least after the brush is installed in the brush installation cavity (83) of the brush box (8), The plate portion (82) is bent inward and the conductive connecting portion (81) is bent downward to close the rear end of the brush installation cavity (83).
The improved flat series motor according to claim 8, characterized in that: the transverse cross-section of the riveting hole (60) is in the shape of an arch bridge, and the riveting hole (60) includes a contact with the riveting pin (80). The adapted riveted plug-in section (600) and the arched arc section (601) formed by the riveted plug-in section (600) extending inwardly, the two opposite ends of the arched arc section (601) are respectively connected to the plug A boss (602) is formed between the segments, and the arc segments (601) of a pair of riveting holes (60) corresponding to the two riveting pins (80) are arranged in opposite directions;

The length of the riveting pin (80) is half of the width of the brush mounting cavity (83). At least after the brush is installed in the brush mounting cavity (83) of the brush box (8), the two riveting pins ( 80) Compete against each other.
An improved flat series motor according to any one of claims 1-9, characterized in that: each end of the motor front bracket (18) is provided with a positioning connector (180), each positioning connection The head (180) extends outward to form a supporting connecting lug (181) for supporting home appliances, and the distance between the motor front bracket (18) and the motor rear bracket (7) is less than or equal to 66 mm.