CN116937891B

CN116937891B - Brushless motor

Info

Publication number: CN116937891B
Application number: CN202310938071.5A
Authority: CN
Inventors: 苗立波; 李鸣聪; 吴太兵
Original assignee: Yongzhou Shunhe Intelligent Technology Co ltd
Current assignee: Yongzhou Shunhe Intelligent Technology Co ltd
Priority date: 2023-07-28
Filing date: 2023-07-28
Publication date: 2024-06-11
Anticipated expiration: 2043-07-28
Also published as: CN116937891A

Abstract

The invention relates to the field of brushless motors, in particular to a brushless motor. Brushless motor includes casing, base, spacer ring, sleeve shell, roof, rotor, stay bolt, cooling mechanism, insulator, pad section of thick bamboo, iron core, link down, go up link, magnet and upper junction plate, and the casing bottom is equipped with the base, and the casing top is equipped with the spacer ring, and the spacer ring top is equipped with the sleeve shell, and sleeve shell top fixedly connected with roof, the inside rotor that is equipped with of casing, rotor outside cover have magnet. According to the brushless motor provided by the invention, the whole motor part and the shell are fixed and limited through the three long bolts, so that the motor is convenient to detach and maintain, the motor can be assembled more conveniently, and the fan blades are driven to rotate when the motor rotates, so that the air flow exchange with the outside is enhanced from the inside of the motor, and the heat dissipation of the motor is enhanced.

Description

Brushless motor

Technical Field

The invention relates to the field of brushless motors, in particular to a brushless motor.

Background

The brushless motor is a motor commonly used in the market at present, and compared with a brush motor, the brushless motor has the advantages of low noise, no maintenance, low power consumption, long service life and the like, and is widely used, but in the use process, the brushless motor inevitably generates a large amount of heat, and the normal operation of the brushless motor can be influenced. The heat dissipation problem of brushless motor is the important factor that needs to consider, current brushless motor dispels the heat through reserving the louvre at the shell surface, and such a mode, the louvre is reserved too much, leads to the dust to get into inside the motor easily, leads to the dust to pile up on parts such as motor inner coil surface easily, reduces the life of motor, and too much louvre still can reduce the intensity of motor casing moreover, and reserves too little and can reduce inside and outside heat and pass through air transfer rate, influence motor heat dissipation.

Accordingly, there is a need to provide a new brushless motor that solves the above-mentioned problems.

Disclosure of Invention

In order to solve the technical problems, the invention provides a brushless motor.

The brushless motor provided by the invention comprises: casing, the base, the spacer ring, the cover shell, the roof, the rotor, the long bolt, heat dissipation mechanism, the insulator, fill up a section of thick bamboo, the iron core, lower link, go up the link, magnet and upper junction plate, the casing bottom is equipped with the base, the casing top is equipped with the spacer ring, the spacer ring top is equipped with the cover shell, cover shell top fixedly connected with roof, the inside rotor that is equipped with of casing, rotor outside cover has the magnet, rotor top outside cover has last link, rotor bottom outside cover has down the link, magnet outside cover has the iron core, iron core both ends respectively with last link and lower link slip grafting, the equidistant cover in iron core outside has the coil, the rotor both ends are connected with base and roof rotation respectively through the bearing, base top center department cover has a section of thick bamboo, it has insulator and lower junction plate to fill up the cover outside the spacer ring bottom, the inside equidistant slip grafting of roof has the long bolt, long bolt bottom runs through spacer ring and base threaded connection, heat dissipation mechanism is installed in the rotor outside.

Preferably, the heat dissipation mechanism comprises a sleeve, bending strips, sliding drums, fan blades, baffle plates, movable brackets, fixing plates, springs and inclined strips, wherein the sliding drums are slidably connected to the outer sides of the rotors, the fan blades are fixedly connected to the outer sides of the sliding drums at equal intervals, the inclined strips are fixedly connected to the bottoms of the sliding drums at equal intervals, ventilation holes are formed in the tops of top plates at equal intervals, the sleeves are fixedly connected to the outer sides of the rotors at equal intervals, the bending strips are slidably inserted between two adjacent inclined strips, the movable brackets are fixedly connected to the tops of the sliding drums, the movable brackets are sleeved on the outer sides of the rotors, connecting rods are fixedly connected to the tops of the movable brackets at equal intervals, the top ends of the connecting rods are fixedly connected to the corresponding ventilation holes in a sliding mode, the baffle plates are fixedly connected to the top ends of the connecting rods in a sliding mode, one ends of the fixing plates are fixedly connected to the inner walls of the casings at equal intervals, the outer sides of the connecting rods are sleeved with springs, and the two ends of each spring are fixedly connected to the movable brackets and the corresponding fixing plates respectively.

Preferably, the shell outside equidistance has seted up the louvre, and the louvre is inside all to be equipped with the filter screen.

Preferably, a sensor board is arranged between the cushion cylinder and the lower connecting frame, a circuit board is arranged between the base and the insulator, a plurality of groups of connecting wires are arranged in the cushion cylinder at equal intervals, and two ends of the connecting wires are respectively electrically connected with the sensor board and the circuit board.

Preferably, hexagonal grooves are formed in the tops of the long bolts.

Preferably, the outer side of the rotor is sleeved with a gasket.

Preferably, the outer side of the rotor is symmetrically provided with a plane groove, the inner wall of the sliding cylinder is symmetrically and fixedly connected with a sliding block, and the sliding block is in sliding connection with the corresponding plane groove.

Preferably, the insulator, the iron core, the lower connecting plate and the upper connecting plate are provided with embedded grooves at equal intervals on the outer sides of the corresponding long bolts.

Preferably, a balance plate is arranged in the upper connecting frame, and the balance plate is sleeved outside the rotor.

Preferably, the lower connecting plate is internally and fixedly connected with a lower inserting connection rod at equal intervals, the top end of the lower inserting connection rod is in sliding connection with the lower connecting frame, the bottom end of the lower inserting connection rod penetrates through the insulator and is in sliding connection with the base, the upper connecting plate is internally and fixedly connected with an upper inserting connection rod at equal intervals, and the bottom of the upper inserting connection rod is in sliding connection with the upper connecting frame.

Compared with the related art, the brushless motor provided by the invention has the following beneficial effects:

The invention provides a brushless motor, which is characterized in that three long bolts are used for fixing and limiting the whole motor part and a casing, so that the motor is convenient to detach and maintain, the motor can be assembled more conveniently, the fan blades are driven to rotate when the motor rotates, the air flow exchange with the outside is enhanced from the inside of the motor, the heat dissipation of the motor is enhanced, the air vent can be shielded by the elasticity of a spring when the motor is not used, dust is prevented from entering the inside of the motor, and the maintenance of the motor is convenient.

Drawings

Fig. 1 is a schematic structural diagram of a brushless motor provided by the invention;

FIG. 2 is a schematic view of the internal structure of the casing shown in FIG. 1;

FIG. 3 is a schematic view of the base shown in FIG. 1;

FIG. 4 is a schematic view of the base of FIG. 3 in a disassembled configuration;

FIG. 5 is a schematic view of the coil shown in FIG. 2;

Fig. 6 is a schematic structural view of the core shown in fig. 2;

FIG. 7 is a schematic view of the case shown in FIG. 1;

FIG. 8 is a schematic view of the rotor shown in FIG. 2;

FIG. 9 is a schematic view of the movable bracket shown in FIG. 8;

FIG. 10 is a schematic view of the top plate of FIG. 1;

FIG. 11 is a partial schematic view of the rotor shown in FIG. 8;

fig. 12 is a schematic structural view of the slide cylinder shown in fig. 11.

Reference numerals in the drawings: 1. a housing; 2. a base; 3. a spacer ring; 4. a casing; 5. a top plate; 6. a heat radiation hole; 7. a rotor; 8. a long bolt; 9. a heat dissipation mechanism; 10. an insulator; 11. a cushion cylinder; 12. an iron core; 13. a lower connecting plate; 14. a lower connecting frame; 15. a connecting rod is inserted down; 16. an upper connecting frame; 17. an upper plug rod; 18. a sensor plate; 19. a circuit board; 20. a connecting wire; 21. a coil; 22. a gasket; 23. a magnet; 24. an upper connecting plate; 25. hexagonal grooves; 26. an embedding groove; 27. a balance plate; 91. a sleeve; 92. bending the strip; 93. a slide cylinder; 94. a fan blade; 95. a baffle; 96. a connecting rod; 97. a movable bracket; 98. a fixing piece; 99. a spring; 910. diagonal stripes; 911. a slide block; 912. a planar slot; 913. and an air vent.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Specific implementations of the invention are described in detail below in connection with specific embodiments.

Referring to fig. 1 to 12, a brushless motor, the brushless motor includes: the novel heat dissipation device comprises a shell 1, a base 2, a spacer ring 3, a casing 4, a top plate 5, a rotor 7, a long bolt 8, a heat dissipation mechanism 9, an insulator 10, a cushion 11, an iron core 12, a lower connecting frame 14, an upper connecting frame 16, a magnet 23 and an upper connecting plate 24, wherein the base 2 is arranged at the bottom of the shell 1, the spacer ring 3 is arranged at the top of the shell 1, the casing 4 is fixedly connected with the top plate 5, the rotor 7 is arranged in the shell 1, the magnet 23 is sleeved outside the rotor 7, the upper connecting frame 16 is sleeved outside the top of the rotor 7, the lower connecting frame 14 is sleeved outside the bottom of the rotor 7, the iron core 12 is sleeved outside the magnet 23, two ends of the iron core 12 are respectively connected with the upper connecting frame 16 and the lower connecting frame 14 in a sliding manner, a coil 21 is sleeved outside the iron core 12 in an equidistant manner, two ends of the rotor 7 are respectively connected with the base 2 and the top plate 5 in a rotating manner through bearings, the cushion 11 is sleeved at the center of the top of the base 2, the insulator 10 and the lower connecting plate 13 are sleeved outside the outer side of the spacer ring 11, the upper connecting plate 24 is arranged at the bottom of the spacer ring 3, the long bolt 8 is inserted in an equidistant manner inside the top plate 5, the long bolt 8 penetrates through the bottom the spacer ring 3 and is connected with the base 2 in a threaded connection 9.

It should be noted that: the both ends of iron core 12 are connected with connecting plate 13 and upper connecting plate 24 down through last link 16 and lower link 14, utilize three long bolt 8, establish ties between each part inside the motor, when letting roof 5 and base 2 pass through long bolt 8 mutual fixation, can fix a position parts such as iron core 12 again, make things convenient for holistic dismantlement maintenance, and it is more convenient to let the motor when assembling.

Referring to fig. 5 to 12, the heat dissipation mechanism 9 includes a sleeve 91, a bending bar 92, a sliding cylinder 93, fan blades 94, a baffle 95, a movable bracket 97, a fixing plate 98, a spring 99 and inclined bars 910, the sliding cylinder 93 is slidingly connected to the outer side of the rotor 7, the fan blades 94 are fixedly connected to the outer side of the sliding cylinder 93 at equal intervals, the inclined bars 910 are fixedly connected to the bottom of the sliding cylinder 93 at equal intervals, ventilation holes 913 are equidistantly formed in the top of the top plate 5, the sleeve 91 is fixedly connected to the outer side of the sleeve 91 at equal intervals, the bending bars 92 are slidingly inserted between two adjacent inclined bars 910, the movable bracket 97 is fixedly connected to the top of the sliding cylinder 93, the movable bracket 97 is sleeved on the outer side of the rotor 7, the top of the movable bracket 97 is fixedly connected with a connecting rod 96, the top end of the connecting rod 96 is fixedly connected to the baffle 95, the bottom of the connecting rod 96 is slidingly inserted with the corresponding ventilation holes 913, one end of the fixing plate 98 is fixedly connected to the inner wall of the casing 4, the spring 99 is sleeved on the outer side of the connecting rod 96, and the spring 99 is fixedly connected to the movable bracket 97 and the corresponding fixing plate 98 respectively;

It should be noted that: when the motor is driven, the rotor 7 drives the sleeve 91 to rotate in advance, the bending strip 92 on the sleeve 91 extrudes the inclined strip 910 in the rotating process, the sliding cylinder 93 slides upwards, the movable bracket 97 drives the connecting rod 96 to slide, the baffle plate 95 slides upwards, the ventilation holes 913 are opened, the spring 99 contracts, the bending strip 92 always extrudes the inclined strip 910 in the rapid rotating process by utilizing the high rotating speed of the rotor 7, the ventilation holes 913 are in a normally open state, the fan blades 94 on the sleeve 91 are driven to rotate by utilizing the rotation of the rotor 7, the air flow exchange with the outside is enhanced from the inside of the motor, the heat dissipation of the motor is enhanced, the sliding cylinder 93 can be reset by utilizing the elasticity of the spring 99 when the motor stops working, the baffle plate 95 shields the ventilation holes 913, dust is prevented from entering the inside of the motor, and the maintenance of the motor is facilitated;

referring to fig. 1, heat dissipation holes 6 are equidistantly formed on the outer side of the casing 1, and filter screens are arranged inside the heat dissipation holes 6;

it should be noted that: the heat dissipation holes 6 can be used for exchanging air flow inside and outside the motor so as to dissipate heat, and the filter screen can reduce dust entering;

Referring to fig. 3 and 4, a sensor board 18 is installed between the pad barrel 11 and the lower connecting frame 14, a circuit board 19 is installed between the base 2 and the insulator 10, a plurality of groups of connecting wires 20 are installed inside the pad barrel 11 at equal intervals, and two ends of the connecting wires 20 are respectively electrically connected with the sensor board 18 and the circuit board 19;

It should be noted that: the sensor plate 18 is matched with the circuit board 19 to realize the sensing of the position of the coil 21 and the control of the current in the coil 21;

referring to fig. 1 and 2, hexagonal grooves 25 are formed in the tops of the long bolts 8;

it should be noted that: the hexagonal groove 25 facilitates the screwing adjustment of the long bolt 8;

Referring to fig. 5 and 6, a gasket 22 is sleeved outside the rotor 7;

it should be noted that: the gasket 22 is used for magnetic conduction, reducing magnetic circuit resistance, improving efficiency and reducing heat generation;

Referring to fig. 11 and 12, a planar slot 912 is symmetrically formed on the outer side of the rotor 7, a sliding block 911 is symmetrically and fixedly connected to the inner wall of the sliding cylinder 93, and the sliding block 911 is slidably connected with the corresponding planar slot 912;

It should be noted that: the sliding block 911 is matched with the plane groove 912, so that the sliding cylinder 93 can slide outside the rotor 7 and synchronously rotate along with the rotor 7;

referring to fig. 2 to 6, embedding grooves 26 are equally spaced on the outer sides of the insulator 10, the iron core 12, the lower connecting plate 13 and the upper connecting plate 24, and the embedding grooves 26 are sleeved on the outer sides of the corresponding long bolts 8;

it should be noted that: the insulator 10, the iron core 12, the lower connecting plate 13 and the upper connecting plate 24 are positioned through the long bolts 8, so that the deviation is avoided in the running process of the motor;

Referring to fig. 5, a balance plate 27 is disposed inside the upper connecting frame 16, and the balance plate 27 is sleeved outside the rotor 7;

it should be noted that: the balance plate 27 is a portion for balancing the axial force by using the pressure difference between the gases on both sides thereof;

referring to fig. 2, 3 and 4, a lower plugging rod 15 is fixedly connected inside the lower connecting plate 13 at equal intervals, the top end of the lower plugging rod 15 is in sliding plugging with the lower connecting frame 14, the bottom end of the lower plugging rod 15 penetrates through the insulator 10 and is in sliding plugging with the base 2, an upper plugging rod 17 is fixedly connected inside the upper connecting plate 24 at equal intervals, and the bottom of the upper plugging rod 17 is in sliding plugging with the upper connecting frame 16;

It should be noted that: the lower connecting frame 14 is connected with the base 2 through the lower inserting connection rod 15, and the upper connecting frame 16 is connected with the upper connecting plate 24 through the upper inserting connection rod 17, so that the components inside the motor are more stable and firm.

The working principle of the brushless motor provided by the invention is as follows: the both ends of iron core 12 are connected with lower connecting plate 13 and upper connecting plate 24 through last link 16 and lower link 14, utilize three long bolt 8, establish ties between each part inside the motor, let roof 5 and base 2 pass through long bolt 8 each other fixed while, can fix a position parts such as iron core 12 again, make things convenient for holistic dismantlement maintenance, can be more convenient when the motor is assembled, when motor drive, rotor 7 rotates the in-process, can drive sleeve 91 in advance, let the strip 92 of buckling on the sleeve 91 extrude the diagonal strip 910 at rotatory in-process, let slide tube 93 slide upwards, thereby make movable support 97 drive connecting rod 96 slide, make separation blade 95 slide upwards, open the air vent 913, and spring 99 shrink, utilize the high rotational speed of rotor 7, make the strip 92 of buckling in the fast rotatory in-process, thereby guarantee that the air vent is in normally open state, and utilize the rotation of rotor 7, drive the flabellum 94 on the sleeve 91 and rotate, from inside reinforcing and external air current exchange of motor, reinforcing motor, when motor stop work, can also utilize spring 99 to drive connecting rod 96 to slide, make separation blade 95 slide, it is convenient for maintenance to get into the air vent 913.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims

1. A brushless motor, comprising: casing (1), base (2), spacer ring (3), cover shell (4), roof (5), rotor (7), stock (8), cooling mechanism (9), insulator (10), pad section of thick bamboo (11), iron core (12), link (14) down, go up link (16), magnet (23) and upper connecting plate (24), casing (1) bottom is equipped with base (2), casing (1) top is equipped with spacer ring (3), spacer ring (3) top is equipped with cover shell (4), cover shell (4) top fixedly connected with roof (5), casing (1) inside is equipped with rotor (7), rotor (7) outside cover has magnet (23), rotor (7) top outside cover has last link (16), rotor (7) bottom outside cover has link (14) down, magnet (23) outside cover has iron core (12), iron core (12) both ends respectively with last link (16) and link (14) slip grafting down, iron core (12) outside cover has coil (21), rotor (7) both ends and roof (5) are connected through the bearing (2) equidistance respectively, a cushion cylinder (11) is sleeved at the center of the top of the base (2), an insulator (10) and a lower connecting plate (13) are sleeved outside the cushion cylinder (11), an upper connecting plate (24) is arranged at the bottom of the space ring (3), long bolts (8) are inserted in the top plate (5) in an equidistant sliding manner, the bottom ends of the long bolts (8) penetrate through the space ring (3) and are in threaded connection with the base (2), and a heat dissipation mechanism (9) is arranged outside the rotor (7);

The heat dissipation mechanism (9) comprises a sleeve (91), bending strips (92), a sliding cylinder (93), fan blades (94), baffle plates (95), movable brackets (97), fixing plates (98), springs (99) and diagonal strips (910), the outer side of the rotor (7) is slidably connected with the sliding cylinder (93), the fan blades (94) are fixedly connected with the outer side of the sliding cylinder (93) at equal intervals, diagonal strips (910) are fixedly connected with the bottom of the sliding cylinder (93) at equal intervals, ventilation holes (913) are formed in the top of the top plate (5) at equal intervals, the outer side of the rotor (7) is fixedly connected with the sleeve (91), the bending strips (92) are fixedly connected between two adjacent diagonal strips (910) at equal intervals, the top of the sliding cylinder (93) is fixedly connected with a movable bracket (97), the movable bracket (97) is sleeved on the outer side of the rotor (7), connecting rods (96) are fixedly connected with the tops of the movable brackets (97) at equal intervals, the tops of the connecting rods (96) are spliced in the corresponding ventilation holes (96), the tops of the corresponding ventilation holes (913) are fixedly connected with the baffle plates (913), the bottoms of the baffle plates (95) are fixedly spliced with the corresponding ventilation holes (913), the connecting rod (96) outside all sliding connection has stationary blade (98), stationary blade (98) one end and cover shell (4) inner wall fixed connection, spring (99) have all been overlapped in connecting rod (96) outside, spring (99) both ends respectively with movable support (97) and stationary blade (98) fixed connection that correspond.

2. The brushless motor according to claim 1, wherein the outer side of the housing (1) is provided with heat dissipation holes (6) at equal intervals, and the inside of the heat dissipation holes (6) is provided with a filter screen.

3. Brushless motor according to claim 1, characterized in that a sensor board (18) is installed between the pad cylinder (11) and the lower connecting frame (14), a circuit board (19) is installed between the base (2) and the insulator (10), a plurality of groups of connecting wires (20) are installed in the pad cylinder (11) at equal intervals, and two ends of the connecting wires (20) are respectively electrically connected with the sensor board (18) and the circuit board (19).

4. Brushless electric machine according to claim 1, characterized in that the tops of the long bolts (8) are provided with hexagonal grooves (25).

5. A brushless electric machine according to claim 1, characterized in that the rotor (7) is externally fitted with a spacer (22).

6. The brushless motor according to claim 1, wherein the rotor (7) is symmetrically provided with planar grooves (912), the inner wall of the slide cylinder (93) is symmetrically and fixedly connected with a slide block (911), and the slide block (911) is slidably connected with the corresponding planar groove (912).

7. The brushless motor according to claim 1, wherein the insulator (10), the iron core (12), the lower connecting plate (13) and the upper connecting plate (24) are equally spaced apart from each other by an embedded groove (26), and the embedded grooves (26) are sleeved outside the corresponding long bolts (8).

8. A brushless electric machine according to claim 1, characterized in that the upper connecting frame (16) is internally provided with a balancing plate (27), and the balancing plate (27) is sleeved outside the rotor (7).

9. Brushless motor according to claim 1, characterized in that the lower connecting plate (13) is internally and fixedly connected with a lower inserting rod (15) at equal intervals, the top end of the lower inserting rod (15) is in sliding connection with the lower connecting frame (14), the bottom end of the lower inserting rod (15) penetrates through the insulator (10) and is in sliding connection with the base (2), the upper connecting plate (24) is internally and fixedly connected with an upper inserting rod (17) at equal intervals, and the bottom of the upper inserting rod (17) is in sliding connection with the upper connecting frame (16).