CN111711289A

CN111711289A - Improved flat series motor

Info

Publication number: CN111711289A
Application number: CN202010575604.4A
Authority: CN
Inventors: 张波; 赵冥; 钟远刚; 刘林; 易恭才; 闫鲲
Original assignee: Dongguan Lihui Motor Co ltd
Current assignee: Dongguan Lihui Motor Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2020-09-25
Also published as: WO2021258497A1

Abstract

The invention discloses an improved flat series-excited motor, which comprises a stator component, a rotor component, a motor front support and a motor rear support, wherein the stator component is provided with a stator core, the outer diameter d1 of the stator core is 100-200mm, the thickness d2 of the stator core is 5-20mm, and the inner diameter d3 of the stator core is 60-110 mm; the rotor subassembly includes rotor core, commutator and brush mounting panel, and a plurality of brushes are installed to the brush mounting panel, and rotor core's external diameter d5 is 40-150mm, and the quantity that the wire winding mode of each rotor enameled wire and wire winding groove set up to the wire winding groove is 16, and the cross groove quantity of rotor enameled wire is 4. According to the invention, the height of the series motor is reduced to the greatest extent by improving the stator assembly, the rotor assembly and the mounting structures of the stator assembly and the rotor assembly, and when the components of the series motor are assembled, the distance between the front support and the rear support of the motor is less than or equal to 66 mm.

Description

Improved flat series motor

Technical Field

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

Background

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

The stator assembly comprises a stator core, a stator enameled wire and a stator wire frame for winding the stator enameled wire. Along with the continuous development and progress of society, the quality of life of people is continuously improved, the requirements of household appliance industry on motors are also continuously improved, the development trend requires that the motors are small in size, large in torsion and high in rotating speed, and the finished products of the electric appliances are small in size, large in torsion and high in rotating speed relatively. The traditional design of household appliance high-power motors is 98 series, 95 series and 88 series; when the power of the motor needs to reach more than 2000W, the lamination thickness of the stator core needs to be more than 40mm, the manufacturing process of the stator core with the thickness of more than 40mm is difficult, and the reject ratio is high.

The motor rotor part is a conversion device for converting electric energy into electric energy by a series motor, and mainly comprises a rotor core, a commutator and a plurality of groups of rotor enameled wires, wherein one group of rotor enameled wires corresponds to one pair of magnetic poles of the motor stator part. The stator core of a traditional series excited machine is 2 poles, the outer diameter and the bottom diameter of a rotor core are small, the bottom diameter of the rotor core is generally 15-25mm, the number of winding grooves of the corresponding rotor core is generally 10 grooves or 12 grooves, namely, the number of crossing grooves corresponding to rotor enameled wires is 5 grooves or 6 grooves, the winding process is a full-distance winding process, namely, the rotor enameled wires almost cross the whole outer diameter of the stator core, and the distance from the upper part of a commutator to the rotor core is long.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an improved flat series-excited machine, wherein a stator assembly, a rotor assembly and a mounting structure of the stator assembly and the rotor assembly are improved, so that the height of the series-excited machine is reduced to the maximum extent, and when all parts of the series-excited machine are assembled, the distance between a front support and a rear support of the machine is less than or equal to 66 mm.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a flat series excited machine of modified, includes stator module, rotor subassembly, motor fore-stock and motor after-poppet from top to bottom to closing the setting, stator module sets up between motor fore-stock and the motor after-poppet, the relative stator module normal running fit of rotor subassembly, its characterized in that: the stator assembly is provided with a stator coil holder, a stator enameled wire wound on the stator coil holder and a stator core arranged on the stator coil holder;

the transverse section of the stator core is annular, the stator core is provided with at least four threading grooves which are distributed at intervals in an annular manner, the included angle between the central point of each threading groove and the central point of the stator core is 90 degrees, the outer diameter d1 of the stator core is 100 plus 200mm, the thickness d2 of the stator core is 5-20mm, and the inner diameter d3 of the stator core is 60-110 mm;

the rotor assembly comprises a rotor core, a commutator and a brush mounting plate which are sequentially arranged from top to bottom, the motor rear support is positioned below the brush mounting plate, shaft holes for the commutator to penetrate are formed in the middle of the rotor core and the brush mounting plate, the shaft holes of the rotor core are penetrated through the upper portion of the commutator, the shaft holes of the brush mounting plate are penetrated through the lower portion of the commutator, a plurality of brushes distributed in an axis array mode are installed on the brush mounting plate, each brush is in friction contact fit with the commutator respectively, at least four groups of rotor enameled wires are wound on the rotor core, a plurality of winding grooves are formed in the outer edge of the rotor core, and the number of the brushes corresponds to the number of poles of the stator core;

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

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

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

3) the number of winding slots is 64, and the number of spanning slots of the rotor enameled wire is 16.

In a further technical scheme, the stator coil holder is provided with an upper split frame and a lower split frame, an upper shielding part is arranged at the lower part of the upper split frame, a lower shielding part is arranged at the upper part of the lower split frame, the upper shielding part and the lower shielding part are arranged in an involution manner or in an interdigitation manner to form an enameled wire insulating part, a core containing groove for containing the stator core is arranged at the outer edge of the enameled wire insulating part, a plurality of wire containing grooves for containing the stator enameled wire are arranged at the inner edge of the enameled wire insulating part, and each wire containing groove is respectively involuted with the corresponding threading groove up and down.

In a further technical scheme, one of the upper shielding part and the lower shielding part is provided with an opposite insertion matching part, and the other part is provided with an opposite insertion groove at a position corresponding to the opposite insertion matching part;

an upper wire blocking block is arranged on the inner side of the upper split frame, a lower wire blocking block is arranged on the inner side of the lower split frame, the upper wire blocking block and the lower wire blocking block are arranged in an involutory mode or an interlude mode to form a wire blocking part, and the wire placing groove is formed between the wire blocking part and the enameled wire insulating part;

the upper part of the upper split frame extends outwards to form an upper guide part, the upper part of the lower split frame extends outwards to form a lower guide part, and at least when the upper shielding part and the lower shielding part are arranged in a matching way or are inserted oppositely, the core placing grooves are formed among the upper guide part, the lower guide part and the enameled wire insulating part;

a winding part is formed between two adjacent wire placing grooves and comprises 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 placing groove is C-shaped;

the transverse section of the wire placing groove is in a shape of a mouth or an O;

the number of the wire placing grooves is 4, 6 or 8.

In a further technical scheme, a terminal positioning portion is arranged at a position, corresponding to the wire slot, of the stator wire frame, the stator assembly is provided with a puncture terminal, the puncture terminal comprises a male terminal and a female terminal, one end of the female terminal is electrically connected with the male terminal, the other end of the female terminal is connected to the terminal positioning portion, the female terminal is provided with at least one puncture tip used for puncturing the stator enameled wire, a conductive lead is arranged at the end of the male terminal and used for being connected with an external power supply, and the transverse cross section of the puncture terminal is in an L shape.

In a further technical scheme, the thickness of the rotor core is 8-20mm, the bottom diameter of the rotor enameled wire is 40-100mm, at least when each group of the rotor enameled wires are respectively wound on the corresponding winding grooves, the rotor enameled wire is positioned on the outer side of the commutator, the distance d4 between the end surface of the lower part of the commutator and the end surface of the lower part of the rotor core is not more than 20mm, and the outer diameter d7 of the commutator is smaller than the bottom diameter d6 of the rotor core.

In a further technical scheme, the brush mounting panel with be provided with the insulating part between the motor after-poppet, each the brush includes that one installs the brush box at the brush mounting panel and inlays the brush in the brush box, and the shaping of motor after-poppet has the brush to avoid the groove, and the insulating part stretches to the brush and avoids the groove, and the lower part of brush box has the riveting pin, and the riveting pin downwardly extending extends the brush mounting panel and rivets to the lower terminal surface of brush mounting panel, and the riveting pin is located the top of insulating part.

In a further technical scheme, a linear distance d8 between the electric brush mounting plate and the rear motor bracket in the vertical direction is not more than 2.5mm, a linear distance d9 between the end of the riveting pin and the rear motor bracket in the vertical direction is not more than 2.0mm, and a linear distance between the rotor core and the rear motor bracket in the vertical direction is 15-30 mm.

In a further technical scheme, the insulating part is an integrally formed annular insulating sheet, brush insulating parts are respectively formed in the positions, corresponding to the brush avoiding grooves, of the insulating sheet in a protruding mode, and the brush insulating parts are matched with the size and the shape of the brush avoiding grooves;

the riveting hole has been seted up to the position department that the brush mounting panel corresponds each brush box, and the brush box has a brush installation cavity, and the upper end of brush box has a conductive connection portion, and the upper portion of brush box has a baffle portion, installs at the brush installation cavity of brush box at least at the brush, and the baffle portion is inwards buckled and conductive connection portion is buckled downwards in order to seal the rear end of brush installation cavity.

In a further technical scheme, the transverse section of each riveting hole is in an arch bridge shape, each riveting hole comprises a riveting insertion section matched with a riveting pin and an arch section formed by inwards extending and arching the riveting insertion section, two opposite end parts of the arch sections respectively form a boss with the insertion sections, and the arch sections of a pair of riveting holes corresponding to the two riveting pins are oppositely arranged in an opposite direction;

the length of riveting pin is half of the width of brush installation cavity, and at least after the brush is installed at the brush installation cavity of brush box, two riveting pins are mutually supported.

In a further technical scheme, each end of the motor front support is provided with a positioning connector, each positioning connector extends outwards to form a supporting connecting lug for supporting household appliances, and the distance between the motor front support and the motor rear support is less than or equal to 66 mm.

After adopting the structure, compared with the prior art, the invention has the advantages that:

according to the invention, the height of the series motor is reduced to the greatest extent by improving the stator assembly, the rotor assembly and the mounting structures of the stator assembly and the rotor assembly, and when the components of the series motor are assembled, the distance between the front support and the rear support of the motor is less than or equal to 66 mm.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a stator assembly of the present invention;

FIG. 3 is a schematic structural view of a prior art stator core;

fig. 4 is a plan view of a stator core according to a first embodiment of the present invention;

fig. 5 is a plan view of a stator core according to a second embodiment of the present invention;

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

fig. 7 is a perspective view of a stator core of the present invention;

FIG. 8 is a schematic structural view of a stator bobbin of the present invention;

FIG. 9 is an exploded view of the stator bobbin of the present invention;

FIG. 10 is a schematic structural view of an upper split bobbin of the present invention;

FIG. 11 is a schematic structural view of a lower split bobbin of the present invention;

FIG. 12 is a schematic view of the piercing terminal of the present invention;

FIG. 13 is a schematic view of the construction of the rotor assembly and the rear bracket of the motor of the present invention;

fig. 14 is an assembly schematic view of the commutator and rotor core of the present invention;

FIG. 15 is a schematic view of the assembly of the commutator of the present invention with the brush mounting plate and the rear bracket of the motor;

fig. 16 is a side view of a prior art commutator assembled with a rotor core;

fig. 17 is a side view of the assembled commutator and rotor core of the present invention;

fig. 18 is a schematic view of a winding structure of a rotor enamel wire and a winding slot according to the prior art;

fig. 19 is a schematic view of a winding structure of a rotor enamel wire and a winding slot according to the present invention;

FIG. 20 is a schematic view of a prior art brush box assembled with a brush mounting plate;

FIG. 21 is a schematic view of the assembly of the brush box of the present invention with the brush mounting plate and the rear bracket of the motor;

FIG. 22 is an enlarged schematic view of the structure at A in FIG. 21;

FIG. 23 is an exploded view of the brush box and brush mounting plate and motor rear bracket of the present invention;

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

FIG. 25 is a schematic structural view of a brush box of the present invention;

FIG. 26 is a schematic view of a prior art riveting of a brush box to a brush mounting plate;

FIG. 27 is a schematic view of the riveting of the brush box of the present invention to a brush mounting plate;

FIG. 28 is a schematic structural view of the brush mounting plate of the present invention;

fig. 29 is an enlarged schematic view of the structure at B in fig. 28.

Detailed Description

The following are merely preferred embodiments of the present invention, and do not limit the scope of the present invention.

As shown in fig. 1 to 29, the improved flat series-wound motor provided by the present invention includes a stator assembly, a rotor assembly, a front motor bracket 18, a rear motor bracket 7, and a front motor bracket 18 and a rear motor bracket 7, wherein the front motor bracket 18 and the rear motor bracket 7 are vertically arranged in a matching manner, the stator assembly is arranged between the front motor bracket 18 and the rear motor bracket 7, and the rotor assembly is rotationally matched with the stator assembly.

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

Mounting portion of stator core 3: as shown in fig. 2-6, the transverse cross section of the stator core 3 is annular, the stator core 3 is provided with at least four threading slots 30, the four threading slots 30 are annularly distributed at intervals, the included angle between the center point of each threading slot 30 and the center point of the stator core 3 is 90 degrees, the outer diameter d1 of the stator core 3 is 100 plus 200mm, the thickness d2 of the stator core 3 is 5-20mm, and the inner diameter d3 of the stator core 3 is 60-110mm, the 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 requirement of miniaturization of the finished terminal household appliance is met; secondly, when the outer diameter of the stator core 3 is enlarged, the invention adopts the structure of the four-wire slot 10 to solve the problem that the span of a two-pole coil (as shown in figure 3) is large and the service life is low, and the power of the motor adopting the structure of the single-phase four-pole stator core is up to 2000W.

In a possible embodiment, the outer diameter d1 of the stator core 3 is 100-120mm, the thickness d2 of the stator core 3 is 10-18mm, 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 105mm, the thickness d2 of the stator core 3 is 15mm, and the inner diameter d3 of the stator core 3 is 67 mm.

In another possible embodiment, the outer diameter d1 of the stator core 3 is 120-140mm, the thickness d2 of the stator core 3 is 10-15mm, 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 120mm, the thickness d2 of the stator core 3 is 10mm, and the inner diameter d3 of the stator core 3 is 76 mm.

In another possible embodiment, the outer diameter d1 of the stator core 3 is 140-160mm, the thickness d2 of the stator core 3 is 7-15mm, 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 140mm, the thickness d2 of the stator core 3 is 10mm, and the inner diameter d3 of the stator core 3 is 81 mm.

In another possible embodiment, the outer diameter d1 of the stator core 3 is 160-200mm, the thickness d2 of the stator core 3 is 7-15mm, 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 160mm, the thickness d2 of the stator core 3 is 7mm, and the inner diameter d3 of the stator core 3 is 95.5 mm.

Stator bobbin 1 part: stator line frame 1 is provided with components of a whole that can function independently frame 10 and lower components of a whole that can function independently frame 11, and the lower part of going up components of a whole that can function independently frame 10 has last shielding part 100, and the upper portion of lower components of a whole that can function independently frame 11 has lower shielding part 110, goes up shielding part 100 and lower shielding part 110 and closes the setting or to inserting the setting and form enameled wire insulating part 12, and the outer fringe of enameled wire insulating part 12 is provided with and is used for the holding stator core 3 puts core slot 13, and the inner edge of enameled wire insulating part 12 is provided with a plurality of holding wire grooves 14 that are used for the holding stator enameled wire 2, and each holding wire groove 14 is closed the setting from top to bottom with corresponding threading groove 30 respectively, and stator enameled wire package 2 is directly insulated with stator core 3 through enameled wire package insulating part 12, and its stator line frame 1 for prior art need not to increase the insulating piece in.

The transverse section of the core placing groove 13 is C-shaped, the transverse section of the wire placing groove 14 is O-shaped or mouth-shaped, the stator enameled wire 2 is accommodated in the wire placing groove 14, the stator assembly is assembled, the stator enameled wire 2 and the stator core 3 are positioned on the same horizontal plane, the structure is compact, the size of the stator assembly is miniaturized, and the practicability is high. Particularly, the number of the wire placing grooves 14 is 4, 6 or 8, the number of the four threading grooves 30 of the stator core 3 is correspondingly kept consistent with the number of the wire placing grooves 14, the stator core, the stator wire frame and the puncturing terminal in the invention are suitable for a four-pole series motor, a six-phase series motor or an eight-phase series motor, and in order to clearly explain the working principle of the invention, the four-pole motor is taken as an example in the embodiment and the drawings provided by the invention.

In a preferred embodiment, one of the upper shield part 100 and the lower shield part 110 is provided with a mating insertion part 1000, and the other is provided with a mating insertion groove 1100 at a position corresponding to the mating insertion part 1000; an upper wire blocking block 101 is arranged on the inner side of the upper split frame 10, a lower wire blocking block 111 is arranged on the inner side of the lower split frame 11, the upper wire blocking block 101 and the lower wire blocking block 111 are arranged in an involutory mode or in an oppositely inserted mode to form a wire blocking part, and the wire placing groove 14 is formed between the wire blocking part and the enameled wire insulating part 12; an upper guide part 102 is formed by extending the upper part of the upper split frame 10 outwards, a lower guide part 112 is formed by extending the upper part of the lower split frame 11 outwards, and at least when the upper shielding part 100 and the lower shielding part 110 are arranged in a matching way or are inserted into each other, the core placing groove 13 is formed between the upper guide part 102, the lower guide part 112 and the enameled wire insulating part 12; a winding part is formed between two adjacent wire placing grooves 14, and comprises an upper winding part 103 formed on the upper split frame 10 and a lower winding part 113 formed on the lower split frame 11; so that the stator enameled wire 2 can be wound on the stator bobbin 1 by standard winding equipment.

In a further technical scheme, a terminal positioning portion 15 is arranged at a position of the stator bobbin 1 corresponding to the wire slot 14, the stator assembly is provided with a piercing terminal 16, the piercing terminal 16 comprises a male terminal 160 and a female terminal 161, one end of the female terminal 161 is electrically connected with the male terminal 160, the other end of the female terminal 161 is connected to the terminal positioning portion 15, the female terminal 161 is provided with at least one piercing tip 1610 for piercing the stator enameled wire 2, an end of the male terminal 160 is provided with a conductive lead 1600 for connecting an external power supply, and a transverse cross section of the piercing terminal 16 is in an L shape.

As shown in fig. 13-19, the rotor subassembly is including rotor core 4, commutator 5 and the brush mounting panel 6 that from top to bottom sets gradually, motor rear bracket 7 is located the below of brush mounting panel 6, the middle part of rotor core 4 and brush mounting panel 6 all forms and has a shaft hole that supplies commutator 5 to wear to establish, the shaft hole of rotor core 4 is worn to establish on the upper portion of commutator 5, the shaft hole of brush mounting panel 6 is worn to establish in the lower part of commutator 5, brush mounting panel 6 installs the brush of a plurality of axis array distributions, each brush respectively with commutator 5 friction contact cooperation, rotor core 4 is around being equipped with four at least groups rotor enameled wires 9, a plurality of wire winding grooves 40 have been seted up to rotor core 4's outer fringe, the quantity of brush is corresponding with the quantity of rotor enameled wire 9.

Mounting structure in commutator 5 upper portion: 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, the bottom diameter of the rotor enameled wire 9 is 40-100mm, at least when each group of the rotor enameled wires 9 is respectively wound on the corresponding winding slots 40, the distance d4 from the end surface of the rotor enameled wire 9, which is located at the lower part of the outer commutator 5 of the commutator 5, to the end surface of the lower part of the rotor core 4 is not more than 20mm, the number of the winding slots 40 is 16 in the winding manner of each rotor enameled wire 9 and the winding slot 40, and the number of the cross slots of the rotor enameled wires 9 is 4.

According to the invention, the outer diameter of the rotor core 3 is increased, the thickness of the rotor core 3 is reduced, meanwhile, along with the increase of the outer diameter of the rotor core 3, the total number of winding slots 40 of the rotor core 3 can be increased, the number of cross slots of the rotor enameled wires 9 is reduced relative to the total number of the winding slots 40, so that the bottom diameter of the rotor enameled wires 9 is reduced, namely, the rotor enameled wires 9 gradually move outwards towards the outer side of the rotor core 3, at least when each group of the rotor enameled wires 9 are respectively wound on the corresponding winding slots 40, the rotor enameled wires 9 are positioned on the outer side of the shaft hole of the rotor core 3, and the upper part of the commutator 5 can be pressed down to be closer to the rotor core 3, so that the height of the whole rotor assembly is reduced.

In a preferred embodiment, the outer diameter d7 of the commutator 5 is smaller than the bottom diameter d6 of the rotor core 4, further enabling the commutator 5 to be closer to the rotor core 3. And each rotor enameled wire 9 is wound in the corresponding winding groove 40 in a half basket winding manner.

In other embodiments, the winding manner of each rotor enameled wire 9 and the winding slot 40 is set as the following structure, and the number of the winding slots 40 is set to be 32, the number of the cross slots of the rotor enameled wire 9 is 8, the number of the winding slots 40 is 64, and the number of the cross slots of the rotor enameled wire 9 is 16. For clearly explaining the principle of the present invention, the following embodiments use the number of the winding slots 40 as 16, and the number of the cross slots of the rotor enameled wire 9 as 4 as reference, which is not described herein again.

Mounting structure of commutator 5 lower part: in practical application, in order to meet the requirements of miniaturization of the size of a terminal household appliance product and reduction of the overall height of a series excited motor, the invention changes the traditional electric brush mounting structure to leave a vacant mounting space for the commutator 5, so that the lower part of the commutator 5 is closer to the electric brush mounting plate 6.

Specifically, brush mounting panel 6 with be provided with insulator 17, each between the motor after-poppet 7 the brush includes that one installs brush box 8 at brush mounting panel 6 and inlays the brush in brush box 8, and motor after-poppet 7 shaping has the brush to dodge groove 70, and insulator 17 stretches to the brush and dodges groove 70, and the lower part of brush box 8 has riveting pin 80, and riveting pin 80 downwardly extending extends brush mounting panel 6 and rivets to the lower terminal surface of brush mounting panel 6, and riveting pin 80 is located the top of insulator 17.

In practical application, the brush box 8 penetrates through the brush mounting plate 6 and is riveted to the lower end face of the brush mounting plate 6, so that the overall height of a brush mounting structure is reduced, the overall height of a series excited motor is reduced, the brush box 8 is insulated and separated from the rear motor bracket 7 through the insulating piece 17, and the safety requirements are met, specifically, the straight line distance d1 between the brush mounting plate 6 and the rear motor bracket 7 in the vertical direction is not more than 2.5mm, and after the brush box 8 is riveted, the straight line distance d2 between the end of the riveting pin 80 and the rear motor bracket 7 in the vertical direction is not more than 2.0 mm.

Preferably, the rotor core 4 is vertically spaced from the motor rear bracket 7 by 15 to 30mm after the upper and lower portions of the commutator 2 are mounted, respectively.

Wherein, insulating part 17 is integrated into one piece's annular insulating thin slice, and insulating thin slice corresponds each brush and keeps away the position department in groove 70 and has the brush insulating part 170 of protrusion shaping respectively, and each brush insulating part 170 keeps away the big or small shape looks adaptation in groove 70 with the brush, and insulating thin slice shaping has a plurality of buckle hole, and insulating thin slice passes through the buckle hole and connects in the top of motor rear bracket 7 for holistic brush mounting structure is compacter, with the height that reduces brush mounting structure.

The riveting hole 60 is formed in the position, corresponding to each brush box 8, of the brush mounting plate 6, the brush box 8 is provided with a brush mounting cavity 83, the upper end portion of the brush box 8 is provided with a conductive connecting portion 81, the upper portion of the brush box 8 is provided with a baffle portion 82, and at least after the brush is mounted in the brush mounting cavity 83 of the brush box 8, the baffle portion 82 is bent inwards and the conductive connecting portion 81 is bent downwards to seal the rear end of the brush mounting cavity 83, so that the brush can be prevented from sliding out of the brush box 8 in the working state.

The transverse section of the riveting hole 60 is in an arch bridge shape, the riveting hole 60 comprises a riveting insertion section 600 matched with the riveting pin 80 and an arch section 601 formed by inwards extending and arching the riveting insertion section 600, a boss 602 is formed between two opposite ends of the arch section 601 and the insertion section respectively, the arch sections 601 of a pair of riveting holes 60 corresponding to the two riveting pins 80 are oppositely arranged, the length of the riveting pin 80 is half of the width of the electric brush installation cavity 83, at least after the electric brush is installed in the electric brush installation cavity 83 of the electric brush box 8, in practical application, the riveting pins 80 are inserted into the riveting insertion section 300, the upper part of the electric brush box 8 is clamped on the boss 602, and the two riveting pins 80 are abutted against each other, so that the lower part of the electric brush box 8 and the upper part of the electric brush box 8 are always parallel and level in width, the problem of large gap between the carbon brush and the electric brush box 8 is solved, and the working noise is obviously reduced. In the installation process, the insertion depth of the left and right riveting pins 80 is always kept consistent, and secondly, preferably, the arch sections 601 of the pair of riveting holes 60 corresponding to the two riveting pins 80 are oppositely arranged in an opposite direction, as shown in fig. 25-29, compared with the structure that the arch sections 601 are arranged outwards and the inserting sections are arranged inwards in the prior art, the riveting gap of the brush installation plate 6 is large.

As shown in fig. 1, each end of the motor front bracket 18 is provided with a positioning connector 180, each positioning connector 180 is extended outwards to form a supporting connection lug 181, when the series motor and the household appliance are assembled, the supporting connection lug 181 can be used for supporting the household appliance, and the electric appliance is simple in structure and high in practicability, preferably, after the assembly of each component is completed, the distance between the motor front bracket 18 and the motor rear bracket 7 is less than or equal to 66 mm.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. The utility model provides a flat series excited machine of modified, includes stator module, rotor subassembly, motor fore-stock (18) and motor after-poppet (7) from top to bottom to closing the setting, stator module sets up between motor fore-stock (18) and motor after-poppet (7), the relative stator module normal running fit of rotor subassembly, its characterized in that: the stator assembly is provided with a stator coil holder (1), a stator enameled wire (2) wound on the stator coil holder (1) and a stator core (3) arranged on the stator coil holder (1);

the transverse section of the stator core (3) is annular, the stator core (3) is provided with at least four threading grooves (30), the four threading grooves (30) are distributed at intervals in an annular shape, the included angle between the central point of each threading groove (30) and the central point of the stator core (3) is 90 degrees, 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 inner diameter d3 of the stator core (3) is 60-110 mm;

the rotor component comprises a rotor iron core (4), a commutator (5) and an electric brush mounting plate (6) which are arranged from top to bottom in sequence, the motor rear support (7) is positioned below the electric brush mounting plate (6), shaft holes for the commutator (5) to penetrate through are formed in the middle of the rotor core (4) and the electric brush mounting plate (6), the upper portion of the commutator (5) penetrates through the shaft holes of the rotor core (4), the lower portion of the commutator (5) penetrates through the shaft holes of the electric brush mounting plate (6), a plurality of electric brushes distributed in an axis array mode are mounted on the electric brush mounting plate (6), each electric brush is in friction contact fit with the commutator (5), at least four groups of rotor enameled wires (9) are wound on the rotor core (4), a plurality of winding grooves (40) are formed in the outer edge of the rotor core (4), and the number of the electric brushes corresponds to the number of poles of the stator core (3);

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

1) the number of the winding grooves (40) is 16, and the number of the cross grooves of the rotor enameled wires (9) is 4;

2) the number of the winding grooves (40) is 32, and the number of the cross grooves of the rotor enameled wires (9) is 8;

3) the number of the winding grooves (40) is 64, and the number of the cross grooves of the rotor enameled wire (9) is 16.

2. An improved flat series-wound motor as claimed in claim 1, wherein: the stator coil holder (1) is provided with an upper split holder (10) and a lower split holder (11), the lower part of the upper split holder (10) is provided with an upper shielding part (100), the upper part of the lower split holder (11) is provided with a lower shielding part (110), the upper shielding part (100) and the lower shielding part (110) are arranged in a butt joint mode or are arranged in a butt joint mode to form an enameled wire insulating part (12), the outer edge of the enameled wire insulating part (12) is provided with a core placing groove (13) used for containing the stator core (3), the inner edge of the enameled wire insulating part (12) is provided with a plurality of wire placing grooves (14) used for containing the stator enameled wire (2), and each wire placing groove (14) is respectively arranged in a butt joint mode with the corresponding threading groove (30.

3. An improved flat series-wound motor as claimed in claim 2, wherein: one of the upper shielding part (100) and the lower shielding part (110) is provided with an opposite insertion matching part (1000), and the other part is provided with an opposite insertion groove (1100) at the position corresponding to the opposite insertion matching part (1000);

an upper wire blocking block (101) is arranged on the inner side of the upper split frame (10), a lower wire blocking block (111) is arranged on the inner side of the lower split frame (11), the upper wire blocking block (101) and the lower wire blocking block (111) are arranged in a matched mode or in an inserted mode to form a wire blocking part, and the wire placing groove (14) is formed between the wire blocking part and the enameled wire insulating part (12);

an upper guide part (102) extends outwards from the upper part of the upper split frame (10), a lower guide part (112) extends outwards from the upper part of the lower split frame (11), and at least when the upper shielding part (100) and the lower shielding part (110) are arranged in a matching way or are inserted oppositely, the core placing groove (13) is formed among the upper guide part (102), the lower guide part (112) and the enameled wire insulating part (12);

a winding part is formed between two adjacent wire placing grooves (14), and comprises an upper winding part (103) formed on the upper split frame (10) and a lower winding part (113) formed on the lower split frame (11);

the transverse section of the core placing groove (13) is C-shaped;

the transverse section of the wire placing groove (14) is in a shape of a mouth or an O;

the number of the wire arrangement grooves (14) is 4, 6 or 8.

4. An improved flat series-wound motor as claimed in claim 2, wherein: the utility model discloses a motor stator with puncture terminal, including stator bobbin (1), stator module, male terminal (160), female terminal (161), the one end and the male terminal (160) electric connection of female terminal (161), the other end of female terminal (161) is connected in terminal location portion (15), and female terminal (161) have at least one puncture point (1610) that are used for puncturing stator enameled wire (2), and the tip of male terminal (160) is provided with electrically conductive lead (1600) to be used for connecting external power, the transverse section of puncturing terminal (16) is the L type.

5. An improved flat series-wound motor as claimed in claim 1, wherein: the thickness of the rotor iron core (4) is 8-20mm, the bottom diameter of the rotor enameled wires (9) is 40-100mm, at least when each group of the rotor enameled wires (9) are respectively wound on the corresponding winding grooves (40), the rotor enameled wires (9) are positioned on the outer side of the commutator (5), the distance d4 from the end surface of the lower part of the commutator (5) to the end surface of the lower part of the rotor iron core (4) is not more than 20mm, and the outer diameter d7 of the commutator (5) is smaller than the bottom diameter d6 of the rotor iron core (4).

6. An improved flat series-wound motor as claimed in claim 1, wherein: brush mounting panel (6) with be provided with between motor after-poppet (7) insulating part (17), each the brush includes that one installs brush box (8) in brush mounting panel (6) and inlays the brush in brush box (8), and motor after-poppet (7) shaping has the brush to dodge groove (70), and insulating part (17) stretch to the brush and dodge groove (70), and the lower part of brush box (8) has riveting pin (80), and riveting pin (80) downwardly extending extends brush mounting panel (6) and rivets to the lower terminal surface of brush mounting panel (6), and riveting pin (80) are located the top of insulating part (17).

7. An improved flat series motor as claimed in claim 6, wherein: brush mounting panel (6) with motor after-poppet (7) is at the vertical direction on linear distance d8 be less than or equal to 2.5mm, the tip of riveting pin (80) with motor after-poppet (7) on the vertical direction on linear distance d9 be less than or equal to 2.0mm, rotor core (4) and motor after-poppet (7) on the vertical direction on linear distance be 15-30 mm.

8. An improved flat series motor as claimed in claim 6, wherein: the insulating piece (17) is an integrally formed annular insulating sheet, brush insulating parts (170) are respectively formed in the positions, corresponding to the brush avoiding grooves (70), of the insulating sheet in a protruding mode, and the brush insulating parts (170) are matched with the size and the shape of the brush avoiding grooves (70);

the riveting hole (60) has been seted up in the position department that brush mounting panel (6) correspond each brush box (8), brush box (8) have a brush installation cavity (83), the upper end of brush box (8) has a conductive connection portion (81), the upper portion of brush box (8) has a baffle portion (82), at least, install brush installation cavity (83) the back at brush box (8) at the brush, baffle portion (82) inwards buckle with conductive connection portion (81) buckle in order to seal the rear end of brush installation cavity (83).

9. An improved flat series machine as claimed in claim 8, wherein: the transverse section of each riveting hole (60) is in an arch bridge shape, each riveting hole (60) comprises a riveting insertion section (600) matched with the riveting pin (80) and an arch-shaped section (601) formed by inwards extending and arching the riveting insertion section (600), two opposite ends of each arch-shaped section (601) respectively form a boss (602) with the insertion sections, and the arch-shaped sections (601) of the pair of riveting holes (60) corresponding to the two riveting pins (80) are oppositely arranged in an opposite direction;

the length of the riveting pins (80) is half of the width of the electric brush mounting cavity (83), and at least after the electric brush is mounted in the electric brush mounting cavity (83) of the electric brush box (8), the two riveting pins (80) are mutually abutted.

10. An improved flat series motor according to any one of claims 1 to 9, wherein: each tip of motor fore-stock (18) is provided with a positioning connection head (180) respectively, and each positioning connection head (180) outwards extends the shaping and has a support engaging lug (181) that is used for supporting household electrical appliances, motor fore-stock (18) with the distance of motor after-poppet (7) is less than or equal to 66 mm.