DC motor housing and manufacturing method thereof

Abstract

The present invention discloses a DC motor housing and a manufacturing method thereof, comprising a front end cover, a rear end cover and a splicing monomer, wherein the splicing monomer is fixedly connected between the front end cover and the rear end cover by a positioning rod, and conical rings are arranged inside the splicing monomer, the front end cover and the rear end cover, and the conical rings are arranged tilted in one direction, and a heat dissipation channel is formed between two adjacent conical rings, a positioning mechanism is arranged inside the heat dissipation channel, and a dustproof mechanism is arranged outside the heat dissipation channel. The method comprises: processing the front end cover, processing the rear end cover, processing the splicing monomer, processing the dustproof mechanism and splicing the motor housing. The present invention can meet the installation requirements of DC motor housings of different sizes, is flexible and convenient to use, is quick and easy to install and disassemble, increases the heat dissipation effect, and the dustproof mechanism on each heat dissipation channel can be filtered to reduce dust and impurities from entering the motor, thereby extending the service life of the motor.

Description

Technical Field

[0001] The invention relates to a direct current motor housing and a manufacturing method thereof. Background Art

[0002] A DC motor is an electric motor that converts DC electrical energy into mechanical energy. It is widely used in electric traction due to its good speed regulation performance.

[0003] The DC motors in the prior art often have poor heat dissipation due to the design defects of the housing. As the use time increases, heat accumulates faster and the heat dissipation slows down, which greatly shortens the service life of the motor. At the same time, the existing DC motor housing is generally an integrated structure, which can only be used for the installation of one size of rotor, and has poor practicality. Moreover, since the heat dissipation holes are directly exposed and there is no dustproof mechanism, dust and impurities are easily accumulated inside the motor, seriously affecting the use efficiency of the motor. Summary of the invention

[0004] The purpose of the present invention is to provide a technical solution for a DC motor housing and a manufacturing method thereof in view of the deficiencies in the prior art. Through the design of a splicing unit, the installation requirements of DC motor housings of different sizes can be met. The invention is flexible and convenient to use, and the installation and disassembly are convenient and quick. The positioning rod improves the connection strength and stability between the splicing unit, the front cover and the rear cover, and improves the connection strength of the entire motor housing. The manufacturing method of the motor has simple steps, which can not only realize the installation and disassembly of DC motor housings of different sizes, but also increase the heat dissipation effect. The dustproof mechanism on each heat dissipation channel can be filtered to reduce dust and impurities from entering the motor and extend the service life of the motor.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A DC motor housing, characterized in that: it comprises a front end cover, a rear end cover and a splicing monomer, the splicing monomer is fixedly connected between the front end cover and the rear end cover through a positioning rod, a conical ring is arranged in the splicing monomer, the front end cover and the rear end cover, and the conical ring is inclined in one direction, a heat dissipation channel is formed between two adjacent conical rings, a positioning mechanism is arranged in the heat dissipation channel, and a dustproof mechanism is arranged on the outside of the heat dissipation channel; through the design of the splicing monomer, the installation requirements of DC motor housings of different sizes can be met, the use is flexible and convenient, and the installation and disassembly are convenient and fast, the positioning rod improves the connection strength and stability between the splicing monomer, the front end cover and the rear end cover, and improves the connection strength of the entire motor housing, the design of the conical ring is convenient to form a heat dissipation channel with an annular structure, improves the heat dissipation efficiency of the motor, and prolongs the service life of the motor, and is convenient to install the dustproof mechanism, the design of the positioning mechanism improves the connection strength and stability between the conical rings, the design of the dustproof mechanism can reduce the entry of dust and impurities into the motor, reduce the accumulation of dust inside the motor, and prolong the service life of the motor, the inclined setting of the conical ring can avoid the stator coil and the rotor coil inside the motor housing from being exposed, and does not affect the normal heat dissipation effect.

[0007] Furthermore, a first sleeve and heat dissipation holes are provided on the front end cover. The first sleeve is located at the center of the front end cover, and the heat dissipation holes are symmetrically arranged on both sides of the first sleeve. The first sleeve is used to support the rotating shaft of the motor and improve the working stability of the rotor. The heat dissipation holes can dissipate the heat inside the motor housing, reduce the temperature inside the motor, and extend the service life of electronic components.

[0008] Furthermore, a second sleeve and a frame are provided on the rear end cover, the second sleeve is located at the center of the rear end cover, the frame is provided on both sides of the second sleeve, a carbon brush groove is provided in the frame, a threading hole is provided on the outer side surface of the rear end cover, the threading hole is connected to the carbon brush groove, the second sleeve can support and position the end of the rotor, and the carbon brush groove in the frame is used to install the carbon brush to prevent the carbon brush from being exposed outside the motor and causing damage.

[0009] Furthermore, the positioning mechanism includes a first support block and a second support block, the first support block is evenly distributed in a ring shape on the outer side of the conical ring on the splicing unit and the rear end cover, and the second support block is evenly distributed in a ring shape on the inner side of the conical ring on the splicing unit and the front end cover, and each corresponding first support block and second support block are connected by a limiting assembly, and the first support block and the second support block can improve the connection strength and stability between two adjacent conical rings, thereby further improving the connection strength between the splicing unit, the front end cover and the rear end cover.

[0010] Furthermore, the limiting assembly includes a slot and a block. The slot is located on the end face of the first support block, and the block is located on the end face of the second support block. The block matches the slot. The design of the block and the slot can prevent the splicing unit, the front cover and the rear cover from shifting during installation, thereby improving the stability of the connection.

[0011] Furthermore, the dust-proof mechanism includes an arc-shaped positioning strip and a filter screen. The filter screen is fixedly connected between two arc-shaped positioning strips. Second mounting holes are evenly arranged on the arc-shaped positioning strips. Through the design of the arc-shaped positioning strips, both sides of the filter screen can be positioned to prevent the filter screen from wrinkling during installation, thereby improving the stability and reliability of the filter screen installation.

[0012] Furthermore, arc grooves are provided at both ends of the splicing unit and at the edges of the front cover and the rear cover. The arc grooves are distributed in a ring shape. The arc positioning strips match the arc grooves. First mounting holes are evenly provided on the sides of the arc grooves. The first mounting holes match the second mounting holes. The filter net is installed in the arc groove through the arc positioning strip. The filter net can be distributed in a ring shape on the splicing unit, thereby reducing the entry of dust and impurities into the interior of the motor. The fixed connection between the first mounting hole and the second mounting hole can be achieved by screws, which facilitates the installation and disassembly of the dustproof mechanism.

[0013] Furthermore, a boss is provided between two adjacent arc-shaped grooves, and a through hole is provided on the boss. The through hole matches the positioning rod. The design of the through hole facilitates connection with the positioning rod, thereby improving the connection strength of the entire motor housing.

[0014] Furthermore, stator hanging pieces are evenly arranged on the annular surface on the inner side of the conical ring, and the stator hanging pieces are used to install the stator to improve the heat dissipation effect of the stator.

[0015] The manufacturing method of a DC motor housing as described above is characterized by comprising the following steps:

[0016] 1) Front cover processing

[0017] a. First, the required front end cover is formed by casting according to the design requirements, and the outer surface of the front end cover is polished to improve the flatness and assembly accuracy of the front end cover;

[0018] b. Then, arc grooves are evenly opened along the edge of the front end cover at the opening end to ensure that the size of each arc groove is equal, and first mounting holes are evenly opened along the side of the arc groove in the radial direction to facilitate the fixed connection of the dustproof mechanism and extend the service life of the dustproof mechanism;

[0019] c. Then, a through hole is horizontally opened on the boss between two adjacent arc-shaped grooves along the axial direction, and at the same time, the first sleeve is horizontally installed on the end surface of the front end cover, and heat dissipation holes are opened on the end surface of the front end cover so that the heat dissipation holes are symmetrically distributed on both sides of the first sleeve;

[0020] d. Finally, make the corresponding conical ring according to the design requirements, evenly install the second support blocks on the inner side of the conical ring, the second support blocks are distributed in a ring shape, and each second support block is provided with a clamping block, and the processed conical ring is fixedly installed in the front end cover, so that the side with the second support block faces the open end of the front end cover, which is convenient for fixed connection with the adjacent splicing monomer, and improves the strength and stability of the connection;

[0021] The processing method of the front end cover has simple steps, which can not only realize the fixed connection between the conical ring and the front end cover, but also improve the connection strength and stability between the front end cover and the splicing monomer, and the installation and disassembly are convenient and quick.

[0022] 2) Rear end cover processing

[0023] a. First, the required rear end cover is formed by casting according to the design requirements, and the outer surface of the rear end cover is polished to improve the flatness and assembly accuracy of the rear end cover;

[0024] b. Then, arc grooves are evenly opened along the edge of the rear end cover at the open end to ensure that the size of each arc groove is equal, and first mounting holes are evenly opened along the side of the arc groove in the radial direction to facilitate the fixed connection of the dustproof mechanism and extend the service life of the dustproof mechanism;

[0025] c. Then, a through hole is horizontally opened on the boss between two adjacent arc-shaped grooves along the axial direction, and a second sleeve is horizontally installed on the rear end cover;

[0026] d. According to the design requirements, a frame with a carbon brush groove is installed in the rear end cover, so that the frame is symmetrically distributed on both sides of the second shaft sleeve, and threading holes are opened along the outer side of the rear end cover so that the threading holes are connected with the carbon brush groove, which is convenient for the installation and removal of the carbon brush and improves the safety and reliability of the motor when in use;

[0027] e. Finally, make the corresponding conical ring according to the design requirements, evenly install the first support blocks on the outer surface of the conical ring, the first support blocks are distributed in a ring shape, and each first support block is provided with a slot, and the processed conical ring is fixedly installed in the rear end cover, so that the side with the second support block faces the open end of the rear end cover, so as to facilitate the fixed connection between the rear end cover and the splicing monomer;

[0028] The processing method of the rear end cover has simple steps, which can not only realize the fixed connection between the conical ring and the rear end cover, but also improve the connection strength and stability between the rear end cover and the splicing monomer, and the installation and disassembly are convenient and quick.

[0029] 3) Splicing monomer processing

[0030] a. First, the required splicing monomer is formed by casting according to the design requirements, and the inner and outer sides of the splicing monomer are polished;

[0031] b. Then, arc grooves are evenly opened along the outer circumferential sides of the two ends of the splicing monomer to ensure that the size of each arc groove is equal, and the first mounting holes are evenly opened along the radial direction along the sides of the arc grooves, and a through hole is horizontally opened along the axial direction on the boss between two adjacent arc grooves, so that the through hole passes through the splicing monomer, so as to facilitate the fixed installation of the dustproof mechanism, reduce the dust and impurities from entering the interior of the motor, and reduce the accumulation of dust inside the motor;

[0032] c. Then, according to the design requirements, the corresponding conical ring is made, and the first support blocks are evenly installed on the outer side of the conical ring. The first support blocks are distributed in an annular shape, and each first support block is provided with a card slot. Then, the second support blocks are evenly installed along the inner side of the conical ring. The second support blocks are distributed in an annular shape, and each second support block is provided with a card block. The corresponding first support blocks and second support blocks are located on the same straight line. The design of the first support blocks and the second support blocks greatly improves the installation stability of the splicing monomer and the connection strength, which is conducive to the rapid heat dissipation of the motor when it is working and prolongs the service life of the motor;

[0033] d. Finally, according to the design requirements, the stator hanging pieces are evenly installed along the inner side of the conical ring and on the side surface concentric with the axis. The stator hanging pieces are distributed in a ring shape. The stator hanging pieces are convenient for fixing the stator and the splicing monomer. When the motor is working, the heat generated on the stator can be directly dissipated through the heat dissipation channel;

[0034] The processing method of the splicing monomer has simple steps and strong practicability, which not only improves the processing accuracy and quality of the splicing monomer, but also improves the connection strength.

[0035] 4) Dust-proof mechanism processing

[0036] a. First, determine the size of the arc positioning strip according to the size of the arc groove, form the required arc positioning strip by casting, and grind the outer side of the arc positioning strip to improve the assembly accuracy and quality between the arc positioning strip and the arc groove;

[0037] b. Then, the second mounting holes are evenly opened along the radial direction along the outer side of the arc-shaped positioning strip, so that the second mounting holes match the first mounting holes, so as to facilitate the fixed connection between the arc-shaped positioning strip and the arc-shaped groove, and further improve the installation stability of the filter screen;

[0038] c. Then determine the size of the filter according to the distance between two adjacent splicing units after they are fixedly connected, and fix the filter between the two arc-shaped positioning strips;

[0039] The design of the dustproof mechanism is convenient and quick to install and disassemble, can meet the installation requirements of heat dissipation channels of different widths, and reduce the entry of dust and impurities into the motor.

[0040] 5) Motor housing splicing

[0041] a. First, place the rear end cover horizontally with the side with the tapered ring facing upwards, select positioning rods of appropriate size, and insert the positioning rods into the through holes on the boss of the rear end cover in sequence;

[0042] b. Then, insert the processed splicing unit into the corresponding positioning rod from above, and slide down along the positioning rod to the top surface of the rear end cover, so that the card block on the second support block in the splicing unit is inserted into the card groove on the first support block of the rear end cover, and the processed dustproof mechanism is sequentially installed between the splicing unit and the rear end cover for fixing, and the first mounting hole and the second mounting hole are connected by screws;

[0043] c. Then install the splicing monomer of the previous layer and install the corresponding dustproof mechanism until the required splicing monomers are installed;

[0044] d. After the required splicing units are installed, put the front end cover onto the positioning rod, fix the side with the second support block downward to the upper splicing unit, and tighten the nut on the positioning rod to complete the splicing installation of the entire motor housing.

[0045] The manufacturing method of the motor has simple steps, which can not only realize the installation and disassembly of DC motor housings of different sizes, but also enhance the heat dissipation effect. The dust-proof mechanism on each heat dissipation channel can perform filtering treatment to reduce dust and impurities from entering the motor, thereby extending the service life of the motor.

[0046] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0047] 1. Through the design of the splicing monomer, it can meet the installation requirements of DC motor housings of different sizes. It is flexible and convenient to use, and easy and quick to install and disassemble. The positioning rod improves the connection strength and stability between the splicing monomer, the front cover and the rear cover, and improves the connection strength of the entire motor housing.

[0048] 2. The design of the conical ring facilitates the formation of a heat dissipation channel with an annular structure, improves the heat dissipation efficiency of the motor, extends the service life of the motor, and facilitates the installation of a dustproof mechanism.

[0049] 3. The design of the positioning mechanism improves the connection strength and stability between the tapered rings. The design of the dust-proof mechanism can reduce the entry of dust and impurities into the motor, reduce the accumulation of dust inside the motor, and extend the service life of the motor.

[0050] 4. The inclined setting of the conical ring can prevent the stator coil and the rotor coil inside the motor housing from being exposed, while not affecting the normal heat dissipation effect.

[0051] 5. The manufacturing method of the motor has simple steps, which can not only realize the installation and disassembly of DC motor housings of different sizes, but also increase the heat dissipation effect. The dust-proof mechanism on each heat dissipation channel can perform filtering treatment to reduce dust and impurities from entering the motor and extend the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The present invention will be further described below in conjunction with the accompanying drawings:

[0053] Figure 1 This is a rendering of a motor housing in a DC motor housing and a manufacturing method thereof according to the present invention;

[0054] Figure 2 It is a structural schematic diagram of the front end cover in the present invention;

[0055] Figure 3 It is a structural schematic diagram of the rear end cover in the present invention;

[0056] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0057] Figure 5 for Figure 4 A partial enlarged view of point Ⅰ in the middle;

[0058] Figure 6 It is a schematic diagram of the structure of the splicing monomer in the present invention;

[0059] Figure 7 It is a schematic diagram of the bottom structure of the splicing monomer in the present invention;

[0060] Figure 8 Schematic diagram of the distribution of stator hanging pieces in the present invention;

[0061] Fig. 9 It is a structural schematic diagram of the dustproof mechanism in the present invention.

[0062] In the figure: 1-front end cover; 2-rear end cover; 3-joining unit; 4-positioning rod; 5-dustproof mechanism; 6-first sleeve; 7-arc groove; 8-first mounting hole; 9-boss; 10-through hole; 11-second sleeve; 13-frame; 14-brush groove; 15-threading hole; 16-heat dissipation channel; 17-arc positioning strip; 18-filter screen; 19-stator hanging piece; 20-conical ring; 21-first support block; 22-slot; 24-second support block; 25-block; 26-second mounting hole. DETAILED DESCRIPTION

[0063] like Figures 1 to 9As shown, a DC motor housing of the present invention includes a front cover 1, a rear cover 2 and a splicing unit 3. The front cover 1 is provided with a first sleeve 6 and heat dissipation holes. The first sleeve 6 is located at the center of the front cover 1. The heat dissipation holes are symmetrically arranged on both sides of the first sleeve 6. The first sleeve 6 is used to support the rotating shaft of the motor to improve the working stability of the rotor. The heat dissipation holes can dissipate the heat inside the motor housing, reduce the temperature inside the motor, and extend the service life of electronic components.

[0064] A second sleeve 11 and a frame 12 are provided on the rear end cover 2. The second sleeve 11 is located at the center of the rear end cover 2. The frame 12 is provided on both sides of the second sleeve 11. A carbon brush groove 14 is provided in the frame 12. A threading hole 15 is provided on the outer side surface of the rear end cover 2. The threading hole 15 is connected to the carbon brush groove 14. The second sleeve 11 can support and position the end of the rotor. The carbon brush groove 14 in the frame 12 is used to install the carbon brush to prevent the carbon brush from being exposed outside the motor and causing damage.

[0065] The splicing unit 3 is fixedly connected between the front cover 1 and the rear cover 2 by a positioning rod 4. Conical rings 20 are arranged inside the splicing unit 3, the front cover 1 and the rear cover 2, and the conical ring 20 is inclined in one direction. Stator hanging pieces 19 are evenly arranged on the annular surface inside the conical ring 20. The stator hanging pieces 19 are used to install the stator to improve the heat dissipation effect of the stator. A heat dissipation channel 16 is formed between two adjacent conical rings 20, and a positioning mechanism is arranged in the heat dissipation channel 16, the positioning mechanism comprising a first support block 21 and a second support block 24, the first support block 21 is evenly distributed in a ring shape on the outer side surface of the conical ring 20 on the splicing monomer 3 and the rear end cover 2, the second support block 24 is evenly distributed in a ring shape on the inner side surface of the conical ring 20 on the splicing monomer 3 and the front end cover 1, and each corresponding first support block 21 and second support block 24 are connected by a limiting assembly, the first support block 21 and the second support block 24 can improve the connection strength and stability between the two adjacent conical rings 20, and further improve the connection strength between the splicing monomer 3, the front end cover 1 and the rear end cover 2. The limiting assembly includes a slot 22 and a block 25. The slot 22 is located on the end face of the first support block 21, and the block 25 is located on the end face of the second support block 24. The block 25 matches the slot 22. The design of the block 25 and the slot 22 can prevent the splicing unit 3, the front cover 1 and the rear cover 2 from being offset during installation, thereby improving the stability of the connection.

[0066] A dustproof mechanism 5 is provided on the outside of the heat dissipation channel 16. The dustproof mechanism 5 includes an arc-shaped positioning strip 17 and a filter screen 18. The filter screen 18 is fixedly connected between the two arc-shaped positioning strips 17. Second mounting holes 26 are evenly arranged on the arc-shaped positioning strips 17. The design of the arc-shaped positioning strips 17 can be used to position the two sides of the filter screen 18 to prevent the filter screen 18 from wrinkling during installation, thereby improving the stability and reliability of the installation of the filter screen 18.

[0067] Both ends of the splicing unit 3, the edges of the front cover 1 and the rear cover 2 are provided with arc grooves 7, the arc grooves 7 are distributed in an annular manner, the arc positioning strips 17 match the arc grooves 7, the side of the arc grooves 7 is evenly provided with first mounting holes 8, the first mounting holes 8 match the second mounting holes 26, the filter 18 is installed in the arc groove 7 through the arc positioning strips 17, the filter 18 can be distributed in an annular manner on the splicing unit 3, reducing dust and impurities from entering the interior of the motor, the first mounting holes 8 and the second mounting holes 26 can be fixedly connected by screws, and the installation and disassembly of the dustproof mechanism 5 is convenient. Bosses 9 are provided between two adjacent arc grooves 7, and through holes 10 are provided on the bosses 9, and the through holes 10 match the positioning rods 4. The design of the through holes 10 facilitates the connection with the positioning rods 4, and improves the connection strength of the entire motor housing. Through the design of the splicing monomer 3, the installation requirements of DC motor housings of different sizes can be met. It is flexible and convenient to use, and the installation and disassembly are convenient and quick. The positioning rod 4 improves the connection strength and stability between the splicing monomer 3, the front cover 1 and the rear cover 2, and improves the connection strength of the entire motor housing. The design of the conical ring 20 is convenient for forming a heat dissipation channel 16 with an annular structure, improves the heat dissipation efficiency of the motor, and extends the service life of the motor. At the same time, it is convenient to install the dustproof mechanism 5. The design of the positioning mechanism improves the connection strength and stability between the conical rings 20. The design of the dustproof mechanism 5 can reduce the entry of dust and impurities into the interior of the motor, reduce the accumulation of dust inside the motor, and extend the service life of the motor. The inclined setting of the conical ring 20 can avoid the stator coil and the rotor coil inside the motor housing from being exposed, and at the same time does not affect the normal heat dissipation effect.

[0068] A method for manufacturing a DC motor housing as described above comprises the following steps:

[0069] 1) Front cover 1 processing

[0070] a. First, the required front end cover 1 is formed by casting according to the design requirements, and the outer surface of the front end cover 1 is polished to improve the flatness and assembly accuracy of the front end cover 1;

[0071] b. Then, arc grooves 7 are evenly opened along the edge of the front end cover 1 at the opening end to ensure that the size of each arc groove 7 is equal, and first mounting holes 8 are evenly opened along the side of the arc groove 7 in the radial direction to facilitate the fixed connection of the dustproof mechanism 5 and extend the service life of the dustproof mechanism 5;

[0072] c. Then, a through hole 10 is horizontally opened in the axial direction on the boss 9 between two adjacent arc-shaped grooves 7, and at the same time, the first sleeve 6 is horizontally installed on the end surface of the front end cover 1, and heat dissipation holes are opened on the end surface of the front end cover 1, so that the heat dissipation holes are symmetrically distributed on both sides of the first sleeve 6;

[0073] d. Finally, the corresponding conical ring 20 is manufactured according to the design requirements, and the second support blocks 24 are evenly installed on the inner side of the conical ring 20. The second support blocks 24 are distributed in an annular shape, and each second support block 24 is provided with a clamping block 25. The processed conical ring 20 is fixedly installed in the front end cover 1, so that the side with the second support block 24 faces the open end of the front end cover 1, so as to facilitate fixed connection with the adjacent splicing monomer 3 and improve the strength and stability of the connection;

[0074] The processing method of the front end cover 1 has simple steps, which can not only realize the fixed connection between the conical ring 20 and the front end cover 1, but also improve the connection strength and stability between the front end cover 1 and the splicing monomer 3, and the installation and disassembly are convenient and quick.

[0075] 2) Rear end cover 2 processing

[0076] a. First, the required rear end cover 2 is formed by casting according to the design requirements, and the outer surface of the rear end cover 2 is polished to improve the flatness and assembly accuracy of the rear end cover 2;

[0077] b. Then, arc grooves 7 are evenly opened along the edge of the rear end cover 2 at the open end to ensure that the size of each arc groove 7 is equal, and first mounting holes 8 are evenly opened along the side of the arc groove 7 in the radial direction to facilitate the fixed connection of the dustproof mechanism 5 and extend the service life of the dustproof mechanism 5;

[0078] c. Then, a through hole 10 is horizontally opened in the axial direction on the boss 9 between two adjacent arc-shaped grooves 7, and a second sleeve 11 is horizontally installed on the rear end cover 2;

[0079] d. According to the design requirements, a frame 12 with a carbon brush groove 14 is installed in the rear end cover 2, so that the frame 12 is symmetrically distributed on both sides of the second shaft sleeve 11, and a threading hole 15 is opened along the outer side of the rear end cover 2, so that the threading hole 15 is connected with the carbon brush groove 14, which is convenient for the installation and removal of the carbon brush, and improves the safety and reliability of the motor when in use;

[0080] e. Finally, the corresponding conical ring 20 is manufactured according to the design requirements, and the first support blocks 21 are evenly installed on the outer surface of the conical ring 20. The first support blocks 21 are distributed in an annular shape, and each first support block 21 is provided with a slot 22. The processed conical ring 20 is fixedly installed in the rear end cover 2, so that the side with the second support block 24 faces the open end of the rear end cover 2, so as to facilitate the fixed connection between the rear end cover 2 and the splicing monomer 3;

[0081] The processing method of the rear end cover 2 has simple steps, which can not only realize the fixed connection between the tapered ring 20 and the rear end cover 2, but also improve the connection strength and stability between the rear end cover 2 and the splicing monomer 3, and the installation and disassembly are convenient and quick.

[0082] 3) Processing of splicing monomer 3

[0083] a. First, the required splicing monomer 3 is formed by casting according to the design requirements, and the inner and outer sides of the splicing monomer 3 are polished;

[0084] b. Then, arc grooves 7 are evenly opened along the outer circumferential sides of both ends of the splicing monomer 3 to ensure that the size of each arc groove 7 is equal, and first mounting holes 8 are evenly opened along the sides of the arc grooves 7 in the radial direction, and through holes 10 are horizontally opened along the axial direction on the bosses 9 between two adjacent arc grooves 7, so that the through holes 10 penetrate the splicing monomer 3, so as to facilitate the fixed installation of the dustproof mechanism 5, reduce the dust and impurities from entering the interior of the motor, and reduce the accumulation of dust inside the motor;

[0085] c. Then, the corresponding conical ring 20 is manufactured according to the design requirements, and the first support blocks 21 are evenly installed on the outer side of the conical ring 20. The first support blocks 21 are distributed in an annular shape, and each of the first support blocks 21 is provided with a card slot 22. Then, the second support blocks 24 are evenly installed along the inner side of the conical ring 20. The second support blocks 24 are distributed in an annular shape, and each of the second support blocks 24 is provided with a card block 25. The corresponding first support blocks 21 and the second support blocks 24 are located on the same straight line. The design of the first support blocks 21 and the second support blocks 24 greatly improves the installation stability of the splicing monomer 3, and at the same time improves the connection strength, which is conducive to achieving rapid heat dissipation when the motor is working and extending the service life of the motor;

[0086] d. Finally, according to the design requirements, stator hanging pieces 19 are evenly installed along the inner side of the conical ring 20 and on the side surface concentric with the axis. The stator hanging pieces 19 are distributed in a ring shape. The stator hanging pieces 19 are convenient for fixing the stator and the splicing monomer 3. When the motor is working, the heat generated on the stator can be directly dissipated through the heat dissipation channel 16;

[0087] The processing method of the splicing monomer 3 has simple steps and strong practicability, which not only improves the processing accuracy and quality of the splicing monomer 3, but also improves the connection strength.

[0088] 4) Dust-proof mechanism 5 processing

[0089] a. First, the size of the arc-shaped positioning strip 17 is determined according to the size of the arc-shaped groove 7, the required arc-shaped positioning strip 17 is formed by casting, and the outer side surface of the arc-shaped positioning strip 17 is polished to improve the assembly accuracy and quality between the arc-shaped positioning strip 17 and the arc-shaped groove 7;

[0090] b. Then, the second mounting holes 26 are evenly opened along the radial direction along the outer side surface of the arc-shaped positioning strip 17, so that the second mounting holes 26 match the first mounting holes 8, so as to facilitate the fixed connection between the arc-shaped positioning strip 17 and the arc-shaped groove 7, and further improve the installation stability of the filter screen 18;

[0091] c. Then, the size of the filter 18 is determined according to the distance between two adjacent splicing units 3 after being fixedly connected, and the filter 18 is fixedly installed between the two arc-shaped positioning strips 17;

[0092] The design of the dustproof mechanism 5 is convenient and quick to install and disassemble, and can meet the installation requirements of heat dissipation channels 16 of different widths, thereby reducing the amount of dust and impurities that enter the interior of the motor.

[0093] 5) Motor housing splicing

[0094] a. First, place the rear end cover 2 horizontally with the side with the tapered ring 20 facing upwards, select a positioning rod 4 of a suitable size, and insert the positioning rod 4 into the through hole 10 on the boss 9 of the rear end cover 2 in sequence;

[0095] b. Then, the processed splicing monomer 3 is inserted into the corresponding positioning rod 4 from above, and slides down along the positioning rod 4 to the top surface of the rear end cover 2, so that the clamping block 25 on the second supporting block 24 in the splicing monomer 3 is clamped into the clamping groove 22 on the first supporting block 21 of the rear end cover 2, and the processed dustproof mechanism 5 is sequentially installed between the splicing monomer 3 and the rear end cover 2 for fixing, and the first mounting hole 8 and the second mounting hole 26 are connected by screws;

[0096] c. Then install the splicing monomer 3 of the previous layer and install the corresponding dustproof mechanism 5 until the required splicing monomer 3 is installed;

[0097] d. After the required splicing monomer 3 is installed, the front end cover 1 is inserted into the positioning rod 4, so that the side with the second support block 24 faces downward and is fixed to the upper splicing monomer 3, and the nut on the positioning rod 4 is tightened to realize the splicing installation of the entire motor housing.

[0098] The manufacturing method of the motor has simple steps, which can not only realize the installation and disassembly of DC motor housings of different sizes, but also enhance the heat dissipation effect. The dustproof mechanism 5 on each heat dissipation channel 16 can perform filtering treatment to reduce dust and impurities from entering the motor, thereby extending the service life of the motor.

[0099] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A DC motor housing, characterized in that: The invention comprises a front end cover, a rear end cover and a splicing unit, wherein the splicing unit is fixedly connected between the front end cover and the rear end cover through a positioning rod, and conical rings are arranged in the splicing unit, the front end cover and the rear end cover, and the conical rings are arranged in an inclined direction, a heat dissipation channel is formed between two adjacent conical rings, a positioning mechanism is arranged in the heat dissipation channel, and a dustproof mechanism is arranged on the outside of the heat dissipation channel; a first sleeve and a heat dissipation hole are arranged on the front end cover, the first sleeve is located at the center of the front end cover, and the heat dissipation holes are symmetrically arranged on both sides of the first sleeve; the positioning mechanism comprises a first support block and a second support block, the first support block is evenly distributed on the outer side of the conical ring on the splicing unit and the rear end cover in an annular shape, the second support block is evenly distributed on the inner side of the conical ring on the splicing unit and the front end cover in an annular shape, and each corresponding first support block and second support block are connected by a limiting assembly; the limiting assembly comprises a card slot and a card block, the card slot is located on the end face of the first support block, the card block is located on the end face of the second support block, and the card block matches the card slot.

2. A DC motor housing according to claim 1, characterized in that: The rear end cover is provided with a second sleeve and a frame, wherein the second sleeve is located at the center of the rear end cover, the frame is provided on both sides of the second sleeve, a carbon brush groove is provided in the frame, and a threading hole is provided on the outer side surface of the rear end cover, and the threading hole is connected to the carbon brush groove.

3. A DC motor housing according to claim 1, characterized in that: The dustproof mechanism comprises an arc-shaped positioning strip and a filter screen, wherein the filter screen is fixedly connected between two arc-shaped positioning strips, and second mounting holes are evenly arranged on the arc-shaped positioning strips.

4. A DC motor housing according to claim 3, characterized in that: Both ends of the splicing unit, the edges of the front cover and the rear cover are provided with arc grooves, the arc grooves are distributed in a ring shape, the arc positioning strips match the arc grooves, and the sides of the arc grooves are evenly provided with first mounting holes, and the first mounting holes match the second mounting holes.

5. A DC motor housing according to claim 4, characterized in that: A boss is provided between two adjacent arc-shaped grooves, and a through hole is provided on the boss, and the through hole matches the positioning rod.

6. A DC motor housing according to claim 1, characterized in that: Stator hanging pieces are evenly arranged on the annular surface inside the conical ring.

7. A method for manufacturing a DC motor housing according to any one of claims 1 to 6, characterized in that The following steps are involved: 1) Front cover processing a. First, the required front end cover is formed by casting according to the design requirements, and the outer surface of the front end cover is polished; b. Then, arc grooves are evenly opened along the edge of the front end cover at the open end to ensure that the size of each arc groove is equal, and first mounting holes are evenly opened along the side of the arc groove in the radial direction; c. Then, a through hole is horizontally opened on the boss between two adjacent arc-shaped grooves along the axial direction, and at the same time, the first sleeve is horizontally installed on the end surface of the front end cover, and heat dissipation holes are opened on the end surface of the front end cover so that the heat dissipation holes are symmetrically distributed on both sides of the first sleeve; d. Finally, make the corresponding conical ring according to the design requirements, evenly install the second support blocks on the inner side of the conical ring, the second support blocks are distributed in a ring shape, and each second support block is provided with a clamping block, and the processed conical ring is fixedly installed in the front end cover, so that the side with the second support block faces the opening end of the front end cover; 2) Rear end cover processing a. First, the required rear end cover is formed by casting according to the design requirements, and the outer surface of the rear end cover is polished; b. Then, arc grooves are evenly opened along the edge of the rear end cover at the open end to ensure that the size of each arc groove is equal, and first mounting holes are evenly opened along the side of the arc groove in the radial direction; c. Then, a through hole is horizontally opened on the boss between two adjacent arc-shaped grooves along the axial direction, and a second sleeve is horizontally installed on the rear end cover; d. Then, according to the design requirements, install a frame with a carbon brush groove in the rear end cover, so that the frame is symmetrically distributed on both sides of the second shaft sleeve, and open threading holes along the outer side of the rear end cover so that the threading holes are connected to the carbon brush groove; e. Finally, the corresponding conical ring is manufactured according to the design requirements, and the first support blocks are evenly installed on the outer surface of the conical ring. The first support blocks are distributed in a ring shape, and each first support block is provided with a slot. The processed conical ring is fixedly installed in the rear end cover, so that the side with the second support block faces the opening end of the rear end cover; 3) Splicing monomer processing a. First, the required splicing monomer is formed by casting according to the design requirements, and the inner and outer sides of the splicing monomer are polished; b. Then, arc grooves are evenly opened along the outer circumferential sides of both ends of the splicing monomer to ensure that the size of each arc groove is equal, and the first mounting holes are evenly opened along the radial direction along the sides of the arc grooves, and through holes are horizontally opened along the axial direction on the boss between two adjacent arc grooves so that the through holes penetrate the splicing monomer; c. Then, according to the design requirements, the corresponding conical ring is manufactured, and the first support blocks are evenly installed on the outer side of the conical ring. The first support blocks are distributed in an annular shape, and each first support block is provided with a clamping groove. Then, the second support blocks are evenly installed along the inner side of the conical ring. The second support blocks are distributed in an annular shape, and each second support block is provided with a clamping block. The corresponding first support blocks and second support blocks are located on the same straight line; d. Finally, according to the design requirements, the stator hanging pieces are evenly installed along the inner side of the conical ring and on the side surface concentric with the axis, and the stator hanging pieces are distributed in a ring shape; 4) Dust-proof mechanism processing a. First, determine the size of the arc-shaped positioning strip according to the size of the arc-shaped groove, form the required arc-shaped positioning strip by casting, and grind the outer side of the arc-shaped positioning strip; b. Then, the second mounting holes are evenly opened along the outer side surface of the arc-shaped positioning strip in the radial direction so that the second mounting holes match the first mounting holes; c. Then determine the size of the filter according to the distance between two adjacent splicing units after they are fixedly connected, and fix the filter between the two arc-shaped positioning strips; 5) Motor housing splicing a. First, place the rear end cover horizontally with the side with the tapered ring facing upwards, select positioning rods of appropriate size, and insert the positioning rods into the through holes on the boss of the rear end cover in sequence; b. Then, insert the processed splicing unit into the corresponding positioning rod from above, and slide down along the positioning rod to the top surface of the rear end cover, so that the card block on the second support block in the splicing unit is inserted into the card groove on the first support block of the rear end cover, and the processed dustproof mechanism is sequentially installed between the splicing unit and the rear end cover for fixing, and the first mounting hole and the second mounting hole are connected by screws; c. Then install the splicing monomer of the previous layer and install the corresponding dustproof mechanism until the required splicing monomers are installed; d. After the required splicing units are installed, put the front end cover onto the positioning rod, fix the side with the second support block downward to the upper splicing unit, and tighten the nut on the positioning rod to complete the splicing installation of the entire motor housing.

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