Six-groove magnetizing type 90-degree brush motor with built-in capacitor

Abstract

The utility model discloses a six-groove magnetizing type 90-degree built-in capacitor brush motor, which relates to the field of motor design and comprises a motor bottom cover, a rotor and a motor shell. Two carbon brush installation positions are formed on the inner side of the motor bottom cover, motor carbon brushes are fixedly installed in the carbon brush installation positions, a commutator is fixedly installed on the rotor, and the motor carbon brushes abut against the outer side of the commutator to achieve electrical connection. A slot is formed between the carbon brush mounting position and the motor bottom cover, a capacitor is mounted in the slot in a clearance fit manner, the inner end of the capacitor is electrically connected to the motor carbon brush, and the outer end of the capacitor extends out of the motor bottom cover and is electrically connected to the motor shell; a magnetizing ring is fixedly arranged in the motor shell, the magnetizing ring is divided into a plurality of magnetic poles after being magnetized, and S poles and N poles in the magnetic poles are arranged in a staggered manner; according to the utility model, the assembly of the brush motor can be facilitated, the rotation precision and stability of the rotor of the brush motor can be improved, the capacitor can be rapidly replaced, and the noise during the operation of the brush motor can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor design field especially is related to a six slot magnetization formula 90 degree built -in capacitor's brush motor. BACKGROUND

[0002] Brush motor is the rotating electrical machine that contains brush device and converts electric energy into mechanical energy (motor) or converts mechanical energy into electric energy (generator). Brush motor is the basis of all motors, it has the characteristics of fast starting, braking in time, smooth speed regulation in a wide range, relatively simple control circuit, etc.

[0003] The brush motor on the market is all fixed in the motor shell using permanent magnet ring, the common mode is to set up two symmetrical permanent magnet rings and arrange in the two sides in the motor shell, the motor set up in this way only has two magnetic poles, and the rotation angle of the motor is difficult to control accurately.

[0004] If multiple magnetic poles are set, the number of permanent magnet rings needs to be increased correspondingly, since the internal space of the motor shell is limited, and each permanent magnet ring will be mutually magnetically attracted or repelled, resulting in difficulty in installing the permanent magnet ring, therefore, it is necessary to design a new magnetization mode.

[0005] During the assembly of the brush motor, in the existing brush motor, the carbon brush is installed in abutment on the commutator of the rotor by using the diagonal correction mode, in this diagonal arrangement mode, there is a problem of difficult assembly, and at high speed rotation of the rotor, the carbon brush will abut against the commutator for continuous friction, resulting in vibration of the carbon brush position, which will bring certain noise, and the vibration is easy to cause the carbon brush to fail or be damaged, seriously affecting the service life of the brush motor.

[0006] The existing brush motor can set a built-in capacitor to ensure stable operation of the motor, but the fixing mode of the capacitor is relatively cumbersome, or the capacitor is not fixed firmly, resulting in failure of the capacitor, in order to ensure stable installation of the capacitor in the prior art, welding is directly used for connection, this installation mode will cause the capacitor to be difficult to disassemble, and it is very inconvenient when the capacitor needs to be replaced.

[0007] The utility model application is to improve the defects of the brush motor in the prior art. INVENTION CONTENTS

[0008] The utility model provides a technical scheme capable of solving the above problems to overcome the above deficiencies.

[0009] A six slot magnetization formula 90 degree built-in capacitor's brush motor, including motor bottom cover, rotor and motor shell, the rotor is rotatably installed between the motor bottom cover and the motor shell;

[0010] The inner side of the motor bottom cover is formed with two carbon brush installation positions, the included angle between the two carbon brush installation positions is 90°, the motor carbon brush is fixedly installed in the carbon brush installation position, the commutator is fixedly installed on the rotor, and the motor carbon brush abuts against the outer side of the commutator to realize electrical connection.

[0011] The carbon brush installation position and the motor bottom cover are formed with a groove position, the capacitor is installed in the groove position in clearance fit, the inner end of the capacitor is electrically connected to the motor carbon brush, the bottom side edge of the motor shell is assembled and installed on the motor bottom cover, the outer end of the capacitor extends out of the motor bottom cover and is electrically connected to the motor shell.

[0012] The motor shell is fixedly installed with a magnetizing ring, the magnetizing ring is divided into a plurality of magnetic poles after magnetization, the magnetic poles include S poles and N poles, and the S poles and the N poles are arranged alternately, and the middle part of the rotor is installed in the magnetizing ring in clearance fit.

[0013] Further, the rotor is fixedly installed with a six-slot wire holder, the copper wire winding is installed in the six-slot wire holder, the end of the copper wire winding is electrically connected to the commutator, the six-slot wire holder of the rotor is installed in the magnetizing ring in clearance fit, the magnetic poles include two S poles and two N poles, and the two S poles and the two N poles are arranged alternately.

[0014] Further, the outer periphery of the six-slot wire holder is formed with six wire slots, the six wire slots are arranged in a circular array, and the copper wire winding is installed in the six wire slots.

[0015] Further, the motor carbon brush comprises a conductive copper sheet, a conductive spring sheet, a carbon brush body and a shock-absorbing sheet, the conductive copper sheet is inserted and installed in the groove position, the conductive spring sheet is fixedly installed at the inner end of the conductive copper sheet, the carbon brush body is fixedly installed at the other end of the conductive spring sheet, the conductive spring sheet drives the carbon brush body to abut against the outer side of the commutator by the elasticity of the conductive spring sheet, and the shock-absorbing sheet is fixedly installed on the outer side wall of the conductive spring sheet.

[0016] Optionally, the shock-absorbing sheet is a damping strip.

[0017] Further, the motor bottom cover is integrally formed with a plurality of reinforcing ribs, the conductive spring sheet is arranged on the inner side of the reinforcing rib, and the shock-absorbing sheet is installed on the side of the conductive spring sheet close to the reinforcing rib.

[0018] Further, the outer end of the conductive copper sheet extends out of the groove position, the outer end of the conductive copper sheet is bent to form a flange, the flange is attached to the bottom side of the motor bottom cover after being bent, the end of the flange extends out of the motor bottom cover, and the end of the flange extending out of the motor bottom cover is formed with a welding hole.

[0019] Further, the included angle between the two conductive spring sheets is an acute angle.

[0020] Further, the inner end of the conductive copper sheet is formed with a right-angle folded edge, the right-angle folded edge is formed with a hole position, the motor bottom cover is formed with a support block on the side of the slot position, the support block is formed with a mounting blind hole, and a positioning pin is fixedly installed between the hole position and the mounting blind hole.

[0021] Optionally, the mounting blind hole is a threaded hole, and the positioning pin is a screw which is screwedly and tightly installed in the threaded hole.

[0022] Further, the motor bottom cover is formed with two grooves, and the outer side of the motor bottom cover is formed with two recessed grooves, and the grooves are located on the side of the recessed grooves.

[0023] The outer end of the capacitor extends out of the motor bottom cover through the groove and is gap-fit installed in the recessed groove, and after the motor shell is assembled, the outer end of the capacitor is tightly installed between the recessed groove and the inner wall of the motor shell.

[0024] Further, the outer side of the motor bottom cover is formed with a stepped groove, the bottom side edge of the motor shell is assembled in the stepped groove, the recessed groove is integrally formed in the stepped groove, the stepped groove is formed with a positioning block, the bottom side edge of the motor shell is formed with a notch, and the positioning block is gap-fit installed in the notch.

[0025] Further, the middle part of the motor bottom cover is formed with a bearing groove, a ball bearing is fixedly installed in the bearing groove, and the inner ring of the ball bearing is tightly installed on the rotor through tolerance adjustment.

[0026] Compared with the prior art, the utility model has the advantages that:

[0027] 1. A plurality of magnetic poles are arranged in the magnetizing ring by magnetization, and the S poles and N poles in the magnetic poles are staggered and separated from each other, thereby forming a multi-pole magnetic field in the motor shell, and when the rotor rotates, the high-speed rotation can be realized by using the commutator to connect the wires between the motor carbon brushes.

[0028] 2. The two motor carbon brushes are fixed in the motor bottom cover at an angle of 90°, the rotor can be directly assembled into the motor bottom cover from one side, and a stable brush connection is formed, thereby accelerating the assembly efficiency of the motor under the premise of ensuring the quality of the motor.

[0029] 3. The capacitor is additionally installed, the capacitor can enhance the stability of the motor during operation, thereby ensuring the service life of the motor, the inner end of the capacitor is directly connected to the motor carbon brush, the outer end of the capacitor is pressed against the inner wall of the motor shell through the motor shell assembly, thereby completing the stable assembly of the capacitor, after the motor is assembled, the capacitor will not fall off, and the capacitor can be quickly replaced during disassembly, which is convenient to use.

[0030] 4. The damping sheet is arranged on the motor carbon brush, is used for slowing down the vibration generated when high speed friction, makes the motor carbon brush can stably resist the outside of the commutator, improves the rotation accuracy of the motor, and reduces the noise generated when the brush motor works.

[0031] The additional aspects and advantages of the utility model will be partly given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the utility model embodiment or prior art, the following will briefly introduce the drawing needed to be used in embodiment or prior art description, obviously, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can also be obtained according to these drawings without the creative labor.

[0033] Figure 1 It is the structural schematic diagram of the utility model;

[0034] Figure 2 It is the structural schematic diagram of another view of the utility model;

[0035] Figure 3 It is the schematic diagram of the explosion structure of the utility model;

[0036] Figure 4 It is the schematic diagram of the explosion structure of another view of the utility model;

[0037] Figure 5 It is the structural schematic diagram of the magnetic pole in the magnetizing ring;

[0038] Figure 6 It is Figure 5 The structural schematic diagram after magnetizing.

[0039] As shown in the figure: 1, motor bottom cover;2, rotor;3, motor shell;4, carbon brush installation position;5, motor carbon brush;51, conductive copper sheet;52, conductive spring sheet;53, carbon brush main body;54, damping sheet;6, commutator;7, slot position;8, capacitor;9, magnetizing ring;10, magnetic pole;101, S pole;102, N pole;11, six-slot wire holder;12, copper wire winding;13, reinforcing rib;14, flange;15, welding hole;16, right-angle flange;17, hole position;18, support block;19, installation blind hole;20, positioning peg;21, slot;22, recessed groove;23, stepped groove;24, positioning block;25, notch;26, bearing groove;27, ball bearing;28, wire slot. DETAILED DESCRIPTION

[0040] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0041] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0042] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] like Figures 1-6 As shown, the present invention discloses a brushed motor with a six-slot magnetized 90° built-in capacitor 8, comprising a motor bottom cover 1, a rotor 2 and a motor housing 3, wherein the rotor 2 is rotatably mounted between the motor bottom cover 1 and the motor housing 3.

[0046] The inner side of the motor bottom cover 1 has two carbon brush mounting positions 4, and the included angle between the two carbon brush mounting positions 4 is 90°. Motor carbon brushes 5 are fixedly installed in the carbon brush mounting positions 4, and commutator 6 is fixedly installed on the rotor 2. The motor carbon brushes 5 abut against the outside of the commutator 6 to achieve electrical connection.

[0047] The groove 7 is formed between the carbon brush installation site 4 and the motor bottom cover 1, the capacitor 8 is installed in the groove 7 in clearance fit, the inner end of the capacitor 8 is electrically connected to the motor carbon brush 5, the bottom side edge of the motor shell 3 is assembled and installed on the motor bottom cover 1, and the outer end of the capacitor 8 extends out of the motor bottom cover 1 and is electrically connected to the motor shell 3.

[0048] The magnetizing ring 9 is fixedly installed in the motor shell 3, the magnetizing ring 9 is divided into a plurality of magnetic poles 10 after magnetization, the magnetic poles 10 include S poles 101 and N poles 102, the S poles 101 and the N poles 102 are arranged in interlaced manner, and the middle part of the rotor 2 is installed in the magnetizing ring 9 in clearance fit.

[0049] The principle is that: a plurality of magnetic poles 10 are arranged in the magnetizing ring 9 by magnetization, the S poles 101 and the N poles 102 in the magnetic poles 10 are arranged in interlaced manner, a multi-pole magnetic field is formed in the motor shell 3, the high-speed rotation can be realized by the commutator 6 and the wire connection between the motor carbon brushes 5 when the rotor 2 rotates, the two motor carbon brushes 5 are distributed at 90° and fixed in the motor bottom cover 1, the rotor 2 can be directly installed in the motor bottom cover 1 from one side, a stable brush connection is formed, and the assembly efficiency of the motor is accelerated under the premise of ensuring the quality of the motor; the capacitor 8 is additionally installed, the capacitor 8 can enhance the stability during the operation of the motor, thereby ensuring the service life of the motor, the inner end of the capacitor 8 is directly connected to the motor carbon brush 5, the outer end of the capacitor 8 is pressed against the inner wall of the motor shell 3 by assembly of the motor shell 3, thereby completing the stable assembly of the capacitor 8, after the motor is assembled, the capacitor 8 will not fall off, and the capacitor 8 can be quickly replaced during disassembly, which is convenient to use.

[0050] The magnetizing ring 9 is made of neodymium iron boron and is fixed on the inner wall of the motor shell 3 by adhesive.

[0051] The residual magnetism of the magnetizing ring 9 is 670mT, and the magnetic energy product BH of the magnetizing ring is 64-72KJ / m³.

[0052] Further, the six-slot wire holder 11 is fixedly installed on the rotor 2, the copper wire winding 12 is wound and installed in the six-slot wire holder 11, the end of the copper wire winding 12 is electrically connected to the commutator 6, the six-slot wire holder 11 of the rotor 2 is installed in the magnetizing ring 9 in clearance fit, the magnetic poles 10 include two S poles 101 and two N poles 102, and the two S poles 101 and the two N poles 102 are arranged in interlaced manner; thereby forming a six-slot four-pole motor with higher rotation accuracy and stability.

[0053] Further, the six-slot wire frame 11 is peripherally formed with six wire slots 28, which are circularly arranged, and the copper wire winding 12 is installed in the six wire slots 28; when the copper wire winding 12 is electrified, a magnetic field is generated, which cooperates with the magnetic field in the magnetizing ring 9 to provide the rotor 2 with a high-speed rotating force, thereby realizing stable operation of the motor.

[0054] Further, the motor carbon brush 5 comprises a conductive copper sheet 51, a conductive spring sheet 52, a carbon brush body 53, and a damping sheet 54, the conductive copper sheet 51 is inserted and installed in the slot 7, the conductive spring sheet 52 is fixedly installed at the inner end of the conductive copper sheet 51, the carbon brush body 53 is fixedly installed at the other end of the conductive spring sheet 52, the conductive spring sheet 52 itself drives the carbon brush body 53 to abut against the outer side of the commutator 6, and the damping sheet 54 is fixedly installed on the outer side wall of the conductive spring sheet 52; the conductive spring sheet 52 can drive the carbon brush body 53 to abut against the commutator 6 to realize stable electrical connection, the damping sheet 54 is installed on the side wall of the conductive spring sheet 52, the damping sheet 54 can reduce the vibration of the carbon brush body 53 during the operation of the motor, thereby effectively reducing the noise of the motor, and ensuring the stable electrical connection of the carbon brush body 53 on the commutator 6.

[0055] Optionally, the damping sheet 54 is a damping strip.

[0056] Further, the motor bottom cover 1 is integrally formed with a plurality of reinforcing ribs 13, the included angle between the left and right reinforcing ribs 13 is 90°, the conductive spring sheet 52 is arranged on the inner side of the reinforcing rib 13, and the damping sheet 54 is installed on the side of the conductive spring sheet 52 close to the reinforcing rib 13; the reinforcing rib 13 can provide a space for the installation and positioning of the motor carbon brush 5, and can also strengthen the strength of the motor bottom cover 1.

[0057] Further, the outer end of the conductive copper sheet 51 extends out of the slot 7, the outer end of the conductive copper sheet 51 is bent to form a flange 14, the flange 14 is folded to be attached to the bottom side of the motor bottom cover 1, the end of the flange 14 extends out of the motor bottom cover 1, and the end of the flange 14 extending out of the motor bottom cover 1 is formed with a welding hole 15; the flange 14 is attached to the motor bottom cover 1, which can prevent the conductive copper sheet 51 from breaking, thereby facilitating the wiring of the motor.

[0058] Further, the included angle between the two conductive spring sheets 52 is an acute angle; the acute angle structure can enable the carbon brush body 53 to stably abut against the commutator 6 to realize electrical connection, and after the motor is installed, the commutator 6 abuts against the carbon brush body 53, so that the included angle between the two conductive spring sheets 52 is an obtuse angle.

[0059] Further, the inner end of the conductive copper sheet 51 is formed with a right-angle folded edge 16, the right-angle folded edge 16 is formed with a hole position 17, the motor bottom cover 1 is formed with a support block 18 on the side of the slot position 7, the support block 18 is formed with a mounting blind hole 19, and the hole position 17 and the mounting blind hole 19 are fixedly installed with a positioning nail 20; the hole position 17 can be opened on the right-angle folded edge 16, and the positioning nail 20 is fixed into the mounting blind hole 19 through the hole position 17, so that the stable assembly of the conductive copper sheet 51 in the motor bottom cover 1 is realized, and the assembly precision is higher.

[0060] Optionally, the mounting blind hole 19 is a threaded hole, and the positioning nail 20 is a screw which is screwedly and lockingly installed in the threaded hole; the screw can be twisted to realize the assembly, so that the installation and disassembly are facilitated.

[0061] Further, the motor bottom cover 1 is formed with two grooves 21, and the outer side of the motor bottom cover 1 is formed with two recessed grooves 22, the grooves 21 are located at the side edges of the recessed grooves 22.

[0062] The outer end of the capacitor 8 extends out of the motor bottom cover 1 through the groove 21 and is gap-fit installed in the recessed groove 22, and after the motor shell 3 is assembled, the outer end of the capacitor 8 is tightly installed between the recessed groove 22 and the inner wall of the motor shell 3.

[0063] The capacitor 8 can be conveniently arranged, the outer end of the capacitor 8 can be stably electrically connected to the motor shell 3 after the motor is assembled, the stability during use of the motor is ensured, and the locking of the outer end of the capacitor 8 can be cancelled after the motor shell 3 is disassembled, so that the disassembly and replacement of the capacitor 8 are facilitated.

[0064] Further, the outer side of the motor bottom cover 1 is formed with a stepped groove 23, the bottom side edge of the motor shell 3 is assembled in the stepped groove 23, the recessed groove 22 is integrally formed in the stepped groove 23, the stepped groove 23 is formed with a positioning block 24, the bottom side edge of the motor shell 3 is formed with a notch 25, and the positioning block 24 is gap-fit installed in the notch 25; so that the motor shell 3 can be accurately assembled on the motor bottom cover 1, and the mutual rotation does not occur after the assembly is completed.

[0065] Further, the middle part of the motor bottom cover 1 is formed with a bearing groove 26, the bearing groove 26 is fixedly installed with a ball bearing 27, and the inner ring of the ball bearing 27 is tightly installed on the rotor 2 through tolerance adjustment; the ball bearing 27 can be used to ensure the stable rotation of the rotor 2, and appropriate adjustment of the tolerance can realize tight connection, so that the stability of the rotor 2 after installation is higher, the rotor 2 does not move axially during use of the motor, and the stability of the motor during operation is ensured.

[0066] The embodiment is not limited in shape, material, structure, etc. of the utility model in any form, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model are within the protection scope of the technical scheme of the utility model.

Claims

1. A six-slot magnetizing 90° built-in capacitor brush motor, comprising a motor bottom cover, a rotor and a motor shell, the rotor is rotatably fitted between the motor bottom cover and the motor shell; characterized in that: the inner side of the motor bottom cover is formed with two carbon brush installation positions, the included angle between the two carbon brush installation positions is 90°, the carbon brush installation position is fixedly installed with a motor carbon brush, the rotor is fixedly installed with a commutator, and the motor carbon brush is abutted against the outer side of the commutator to realize electrical connection; the carbon brush installation position and the motor bottom cover are formed with a groove position, the capacitor is gap-fitted and installed in the groove position, the inner end of the capacitor is electrically connected to the motor carbon brush, the bottom side of the motor shell is assembled and installed on the motor bottom cover, the outer end of the capacitor extends out of the motor bottom cover and is electrically connected to the motor shell; the motor shell is fixedly installed with a magnetizing ring, the magnetizing ring is divided into a plurality of magnetic poles after magnetization, the magnetic poles include S poles and N poles, and the S poles and the N poles are arranged alternately, and the middle part of the rotor is gap-fitted and installed in the magnetizing ring. The rotor is fixedly installed with a six-slot wire holder, the copper wire winding is installed in the six-slot wire holder, the end of the copper wire winding is electrically connected to the commutator, the six-slot wire holder of the rotor is gap-fitted and installed in the magnetizing ring, the magnetic poles include two S poles and two N poles, and the two S poles and the two N poles are arranged alternately. The motor carbon brush comprises a conductive copper sheet, a conductive spring, a carbon brush body and a shock absorbing sheet, the conductive copper sheet is inserted and installed in the groove position, the conductive spring is fixedly installed at the inner end of the conductive copper sheet, the carbon brush body is fixedly installed at the other end of the conductive spring, the elasticity of the conductive spring itself drives the carbon brush body to abut against the outer side of the commutator, and the shock absorbing sheet is fixedly installed on the outer side wall of the conductive spring. The motor bottom cover is integrally formed with a plurality of reinforcing ribs, the conductive spring is arranged on the inner side of the reinforcing rib, and the shock absorbing sheet is installed on the side of the conductive spring close to the reinforcing rib.

2. A brush motor of six-slot field-magnet type 90°-interior-embedded capacitor according to claim 1, characterized in that: The outer end of the conductive copper sheet extends out of the groove position, the outer end of the conductive copper sheet is bent to form a flange, the flange is folded to be attached to the bottom side of the motor bottom cover, the end of the flange extends out of the motor bottom cover, and the end of the flange extending out of the motor bottom cover is formed with a welding hole.

3. A brush motor with six-slot magnetization and 90° built-in capacitor according to any one of claims 1 or 2, characterized in that: The included angle between the two conductive springs is an acute angle.

4. A brush motor of six-slot field-magnet type 90°-interior-embedded capacitor according to claim 3, characterized in that: The inner end of the conductive copper sheet is formed with a right-angle folded edge, the right-angle folded edge is formed with a hole position, the side edge of the groove position of the motor bottom cover is formed with a support block, the support block is formed with an installation blind hole, and the hole position and the installation blind hole are fixedly installed with a positioning pin.

5. A brush motor of six-slot field-magnet type 90°-interior-embedded capacitor according to claim 3, characterized in that: The motor bottom cover is formed with two grooves, the outer side of the motor bottom cover is formed with two recess grooves, and the grooves are located on the side edges of the recess grooves; 6. A brush motor of six-slot field-magnet type 90°-interior-embedded capacitor according to claim 3, characterized in that: The outer end of the capacitor extends out of the motor bottom cover through the groove and is gap-fitted and installed in the recess groove, and after the motor shell is assembled, the outer end of the capacitor is tightly fitted and installed between the recess groove and the inner wall of the motor shell.

7. A brush motor of six-slot field-orientated 90°-interior-embedded capacitor type according to claim 3, characterized in that: The outer side of the motor bottom cover is formed with a stepped groove, the bottom side of the motor shell is assembled in the stepped groove, the recess groove is integrally formed in the stepped groove, the stepped groove is formed with a positioning block, the bottom side of the motor shell is formed with a notch, and the positioning block is gap-fitted and installed in the notch.

8. A brush motor of six-slot field-magnet type 90°-interior-embedded capacitor according to claim 1, characterized in that: ​ ​ 9. A brush motor of six-slot field-orientated 90°-interior-embedded capacitor type according to claim 8, characterized in that: ​ 10. A brush motor of six-slot field-magnet type 90°-interior-embedded capacitor according to claim 1, characterized in that: The middle part of the motor bottom cover is formed with a bearing groove, a ball bearing is fixedly installed in the bearing groove, and the inner ring of the ball bearing is tightly fitted and installed on the rotor through tolerance adjustment.

Images