CN116780813B - DC brushless motor and running method thereof - Google Patents
DC brushless motor and running method thereof Download PDFInfo
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- CN116780813B CN116780813B CN202311059905.1A CN202311059905A CN116780813B CN 116780813 B CN116780813 B CN 116780813B CN 202311059905 A CN202311059905 A CN 202311059905A CN 116780813 B CN116780813 B CN 116780813B
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- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 244000309464 bull Species 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 abstract description 2
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- 238000010586 diagram Methods 0.000 description 3
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Abstract
The invention belongs to the technical field of brushless motors, and particularly discloses a direct current brushless motor and a direct current brushless motor operation method. According to the invention, the ring frame and the cover plate are used for protecting the direct current brushless motor, so that external components are prevented from directly impacting the inside of the direct current brushless motor; when external parts impact on the surface of the rotating rubber swivel, the rotating rubber swivel can rotate and offset the impact force of the parts, so that the impact force of the parts on the ring frame is reduced, the straightened rubber swivel and the elastic sleeve can further absorb the impact force of the parts, the impact force of the parts is prevented from acting on the outer side surface of the shell, and the protection capability of the DC brushless motor is improved.
Description
Technical Field
The invention belongs to the technical field of brushless motors, and particularly relates to a direct current brushless motor and a direct current brushless motor operation method.
Background
Unlike the brush DC motor, the brushless DC motor has no commutator, but uses the electronic commutator to replace the mechanical commutator, so that the brushless DC motor has the characteristics of good speed regulation performance of the DC motor, and the like, and has the advantages of simple structure, no commutation spark, reliable operation, easy maintenance and the like of the AC motor.
When external parts impact on the brushless direct current motor, the impact force of the parts easily causes the rotor magnet of the brushless direct current motor to loose, thereby affecting the normal work of the brushless direct current motor.
Accordingly, it is necessary to solve the above problems by inventing a brushless dc motor and a brushless dc motor operation method.
Disclosure of Invention
In view of the above problems, the present invention provides a brushless dc motor and a method for operating the brushless dc motor, so as to solve the problems set forth in the background art:
in order to achieve the above purpose, the present invention provides the following technical solutions: the direct current brushless motor comprises a shell and four rotor magnets which are positioned on the inner side of the shell, wherein the four rotor magnets are placed and limited on the inner side of the shell in an alternating manner according to N poles and S poles, stator magnetic steel sheets are arranged at the centers of the four rotor magnets, coils are wound on the surfaces of the stator magnetic steel sheets and are formed by surrounding single wires, two ends of each coil are externally connected with a direct current power supply, the coils are adjacent to a Hall sensor but are not contacted with the Hall sensor, the Hall sensor is further connected with a plurality of power tubes, the Hall sensor is further connected with a control chip, the circumferential outer side surface of the shell is provided with an annular groove, the annular groove surface of the shell is correspondingly sleeved with a limiting ring, the outer side surface of the rotor magnets is provided with grooves, the circumferential outer side surface of the annular groove is annularly provided with a plurality of clamping grooves in parallel, the clamping grooves are in one-to-one correspondence with the grooves, the inner sides of the grooves are correspondingly buckled with lugs, the outer side surfaces of the lugs are attached to the inner side walls of the limiting rings, the outer side surfaces of the annular grooves are provided with annular frames, the bottom surfaces of the annular frames are correspondingly inserted into the center positions of the stator magnetic steel sheets, the circumferential side surfaces, the inner side surfaces of the annular grooves are provided with a plurality of the side surfaces of the limiting rings, and the inner side surfaces of the limiting ring grooves are sleeved with a plurality of grooves, and the limiting rings are sleeved with a plurality of limiting ring grooves, and the elastic grooves are sleeved with a limiting ring.
Further, the rubber swivel is sleeved on the outer side face of the circumference of the ring frame in an annular mode, the inner side face of the circumference of the rubber swivel is attached to the outer side faces of the circumferences of the elastic sleeves, and the rubber swivel is in a tight state.
Further, the apron has been placed at ring frame top, the annular equidistance of apron bottom surface is fixed with a plurality of branches, ring frame top surface is provided with a plurality of sides, a plurality of sides and a plurality of branches one-to-one, and the branch bottom corresponds the run through side, and the screw cap has been cup jointed to the branch bottom spiral, apron top surface center department is provided with the through-hole, the inside grafting of through-hole has the bull stick, the shell top is provided with the limit structure that limits the installation bull stick bottom.
Further, limit the structure and include four annular square round bars that set up side by side, a plurality of square round bars are in same horizontal plane, and a plurality of square round bars inboard ends all are fixed with the arc frame, arc frame top is fixed with the arc buckle, bull stick bottom mounting has the dop, a plurality of protruding poles are installed to dop circumference lateral surface annular, arc buckle center department is provided with the draw-in hole that corresponds with protruding pole, and the arc frame utilizes the arc buckle to inject the buckle at the dop surface, and the arc buckle passes through draw-in hole and protruding pole buckle cooperation and inject the bull stick.
Further, square round bar surface fixation has the arc, square round bar surface has cup jointed the elastic plate, and the elastic plate top is provided with the square round hole that corresponds with square round bar, the elastic plate is in the arc lateral surface, and square round bar removes, and the arc drives the elastic plate and keeps away from the bull stick, and the concave surface center department in the extrusion rotor magnet bottom the elastic plate.
Further, the top surface of the shell is fixedly provided with a plurality of side plates, the side plates correspond to the rotor magnets one by one, the outer side ends of the square round rods correspondingly penetrate through the center of the side plates, square round holes corresponding to the square round rods are formed in the center of the side plates, and the outer side ends of the square round rods are spirally sleeved with fastening sleeves.
Further, a plurality of arc frames are annularly wrapped on the outer side of the circumference of the clamping head, and the shell drives the clamping head and the rotating rod to rotate by utilizing the square round rod and the arc frames.
The invention also provides a running method of the DC brushless motor, which is applied to the DC brushless motor and comprises the following steps:
s1, when a power supply supplies direct current energy to coils, a control chip detects the current positions of a rotor magnet and a stator magnetic steel sheet according to Hall signals provided by a Hall sensor, then N and S magnetic poles are generated by coils on the surface of the stator magnetic steel sheet through controlling a plurality of power tubes in pairs to attract S and N magnetic poles of the stator magnetic steel sheet to generate torque, and N and S magnetic poles generated by coils inside the stator magnetic steel sheet are rotated according to the Hall signals through rotating control on the energizing direction of the coils, so that the rotor magnet drives a shell to rotate;
s2, when the shell rotates, the shell drives the arc frame and the arc buckle plate to rotate by using the square round rod, and the arc buckle plate drives the chuck and the rotating rod to rotate by using the clamping hole to be in clamping fit with the convex rod, so that the DC brushless motor normally operates;
s3, when the rotor magnet rotates, the rotor magnet drives the shell to synchronously rotate by utilizing the lug, the shell limits the outer side face of the lug of the buckle by utilizing the limiting ring, at the moment, the shell and the rotor magnet synchronously rotate, when the shell drives the limiting ring to rotate, the circumferential side face of the elastic sleeve is extruded on the surface of the limiting ring due to extrusion of the rubber rotating ring, and when the limiting ring drives the elastic sleeve to rotate on the surface of the limiting rod, the limiting rods drive the rubber rotating ring to rotate on the circumferential outer side face of the ring frame, so that protection of the DC brushless motor is completed.
The invention has the technical effects and advantages that:
1. according to the invention, the ring frame and the cover plate are used for protecting the direct current brushless motor, so that external components are prevented from directly impacting the inside of the direct current brushless motor; when external parts impact on the surface of the rotating rubber swivel, the rotating rubber swivel can rotate and offset the impact force of the parts, so that the impact force of the parts on the ring frame is reduced, the straightened rubber swivel and the elastic sleeve can further absorb the impact force of the parts, the impact force of the parts is prevented from acting on the outer side surface of the shell, and the protection capability of the DC brushless motor is improved.
2. According to the invention, the limiting rings are used for limiting the protruding blocks, the protruding blocks are completely buckled in the clamping grooves and the grooves, so that the plurality of rotor magnets are conveniently limited and installed on the inner side of the shell, when the rotor magnets rotate, the rotor magnets drive the shell to synchronously rotate by the protruding blocks, the shell limits the outer side faces of the protruding blocks of the buckling blocks by the limiting rings, at the moment, the shell and the rotor magnets synchronously rotate, when the shell drives the limiting rings to rotate, the circumferential side faces of the elastic sleeves are extruded on the surfaces of the limiting rings due to extrusion of the rubber swivel rings, the limiting of the limiting rings on the plurality of protruding blocks is improved, and the situation that the protruding blocks are separated from the grooves due to rotation and component impact is avoided.
3. According to the invention, after the clamping head at the bottom of the rotating rod is correspondingly arranged among the arc-shaped frames, the clamping head continuously extrudes the square round rod through the arc-shaped frames until the inner concave surface of the elastic plate contacts the arc-shaped plate, the square round rod is continuously moved, the arc-shaped plate and the rotor magnet are matched to extrude the elastic plate, and the clamping effect of the arc-shaped frames on the clamping head is improved by utilizing the elasticity of the elastic plate; when the arc plate extrudes the rotor magnet through the elastic plate, the elastic force of the elastic plate is applied to the top of the inner concave surface of the rotor magnet, so that the attaching degree of the rotor magnet and the shell is improved, and the integrity of the rotor magnet and the shell is further improved.
Drawings
Fig. 1 is a schematic diagram of an internal structure of a brushless dc motor according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the corresponding connection of a rotor magnet and a housing according to an embodiment of the present invention;
FIG. 3 is a schematic view of the overall structure of a ring frame according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the overall structure of a brushless dc motor according to an embodiment of the present invention;
FIG. 5 is a schematic view of a square and round bar connection with an arc-shaped frame according to an embodiment of the present invention;
FIG. 6 is a schematic view of a limited structure clamp bottom chuck for a rotary rod in accordance with an embodiment of the invention;
in the figure: 1. a housing; 2. a rotor magnet; 3. stator magnetic steel sheets; 4. a coil; 5. a ring groove; 6. defining a ring; 7. a groove; 8. a clamping groove; 9. a bump; 10. a ring frame; 11. square rods; 12. a side groove; 13. a limiting rod; 14. an elastic sleeve; 15. a rubber swivel; 16. a cover plate; 17. a support rod; 18. a screw cap; 19. a rotating rod; 20. a square round bar; 21. an arc-shaped frame; 22. an arc buckle plate; 23. a chuck; 24. a protruding rod; 25. an arc-shaped plate; 26. an elastic plate; 27. a side plate; 28. and (5) fastening the sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
The invention provides a direct current brushless motor, which is shown in fig. 1 to 3, and comprises a shell 1 and four rotor magnets 2 positioned on the inner side of the shell 1, wherein the four rotor magnets 2 are limited on the inner side of the shell 1 according to the alternate placement of N poles and S poles, a stator magnetic steel sheet 3 is arranged at the center of the four rotor magnets 2, a coil 4 is wound on the surface of the stator magnetic steel sheet 3, the coil 4 is formed by winding a single wire, two ends of the coil 4 are externally connected with a direct current power supply, the coil 4 is adjacent to but not contacted with a Hall sensor, the Hall sensor is also connected with a plurality of power tubes, and the Hall sensor is also connected with a control chip.
The direct current brushless motor of the invention is a unidirectional direct current brushless motor in the prior art, and the working process of the unidirectional direct current brushless motor is as follows: the stator magnetic steel sheet 3 comprises four side bars and a single center bar, the inner side ends of the four side bars are fixedly connected with the center bar, and as the coil 4 surrounds the surfaces of the four side bars of the stator magnetic steel sheet 3, the coil 4 is powered by a direct current power supply, and the magnetic poles of the outer side ends of the two opposite side bars are the same according to the right-hand spiral rule, and the magnetic poles of the outer side ends of the two adjacent side bars are opposite. When the power supply supplies direct current energy to the coils 4, the control chip detects the current positions of the rotor magnet 2 and the stator magnetic steel sheet 3 according to Hall signals provided by the Hall sensors, then N and S magnetic poles are generated by the coils 4 on the surface of the stator magnetic steel sheet 3 through controlling a plurality of power tubes in pairs to attract S and N magnetic poles of the stator magnetic steel sheet 3 to generate torque, and N and S magnetic poles generated by the coils 4 inside the stator magnetic steel sheet 3 are alternately controlled according to the Hall signals through alternately controlling the energizing direction of the coils 4, so that the rotor magnet 2 drives the shell 1 to rotate. The invention only briefly describes the working process of the unidirectional direct current brushless motor, and the unidirectional direct current brushless motor is the prior art, so that the description is not repeated.
The outer side of the circumference of the shell 1 is provided with a ring groove 5, the surface of the ring groove 5 of the shell 1 is correspondingly sleeved with a limiting ring 6, the centers of the outer convex surfaces of the rotor magnets 2 are respectively provided with a groove 7, the circumference outer side of the ring groove 5 is annularly provided with a plurality of clamping grooves 8 in parallel, the plurality of clamping grooves 8 are in one-to-one correspondence with the plurality of grooves 7, the clamping grooves 8 and the grooves 7 are internally correspondingly buckled with protruding blocks 9, the outer side of each protruding block 9 is attached to the inner side wall of the limiting ring 6, the outer side of the shell 1 is provided with a ring frame 10, the bottom surface of the inner side of the ring frame 10 is provided with a square rod 11, the top of the square rod 11 is correspondingly inserted into the center of the bottom surface of the stator magnetic steel sheet 3, the circumference side of the ring frame 10 is provided with a plurality of side grooves 12, the inner side grooves 12 are fixedly provided with limiting rods 13, the surfaces of the limiting rods 13 are rotationally sleeved with elastic sleeves 14, and the circumference side surfaces of the elastic sleeves 14 are attached to the circumference outer side surfaces of the limiting rings 6. The limiting ring 6 is used for limiting, the protruding blocks 9 are completely buckled inside the clamping grooves 8 and the grooves 7, a plurality of rotor magnets 2 are conveniently limited and installed inside the shell 1, when the rotor magnets 2 rotate, the rotor magnets 2 drive the shell 1 to synchronously rotate through the protruding blocks 9, the shell 1 limits the outer side faces of the buckling protruding blocks 9 through the limiting ring 6, at the moment, the shell 1 and the rotor magnets 2 synchronously rotate, when the shell 1 drives the limiting ring 6 to rotate, the circumferential side faces of the elastic sleeves 14 are extruded on the surface of the limiting ring 6 due to extrusion of the rubber rotating ring 15, limiting of the limiting ring 6 on the plurality of protruding blocks 9 is improved, and the situation that the protruding blocks 9 are separated from the grooves 7 due to rotation is avoided.
In fig. 3 and 4, the circumferential outer side surface of the ring frame 10 is annularly sleeved with a rubber swivel 15, the circumferential inner side surface of the rubber swivel 15 is attached to the circumferential outer side surfaces of the plurality of elastic sleeves 14, and the rubber swivel 15 is in a tight state. When the limiting ring 6 drives the elastic sleeve 14 to rotate on the surface of the limiting rod 13, the limiting rods 13 drive the rubber swivel 15 to rotate on the outer side surface of the circumference of the ring frame 10, and the rotating rubber swivel 15 can provide rotation protection for the ring frame 10 to finish the protection of the DC brushless motor. When external parts impact on the surface of the rotating rubber swivel 15, the rotating rubber swivel 15 can rotate and deviate the impact force of the parts, the impact force of the parts on the ring frame 10 is reduced, the straightened rubber swivel 15 and the elastic sleeve 14 can further absorb the impact force of the parts, the impact force of the parts is prevented from acting on the outer side surface of the shell 1, and the protection capability of the DC brushless motor is improved.
In fig. 4, a cover plate 16 is placed at the top of the ring frame 10, a plurality of struts 17 are fixed on the bottom surface of the cover plate 16 at equal intervals in a ring shape, a plurality of side edges are arranged on the top surface of the ring frame 10, the side edges correspond to the struts 17 one by one, the bottom ends of the struts 17 penetrate through the side edges, nuts 18 are spirally sleeved at the bottom ends of the struts 17, a through hole is formed in the center of the top surface of the cover plate 16, a rotating rod 19 is inserted in the through hole, and a limiting structure for limiting the bottom ends of the installation rotating rods 19 is arranged at the top of the shell 1. The ring frame 10 is limited and buckled at the center of the bottom surface of the stator magnetic steel sheet 3 by utilizing the square rod 11, the limited connection between the stator magnetic steel sheet 3 and the ring frame 10 is completed, the shell 1 is limited and clamps the bottom of the rotating rod 19 by utilizing the limited structure, the cover plate 16 is correspondingly covered at the opening of the top of the ring frame 10, the fixed installation of the cover plate 16 and the ring frame 10 is completed by utilizing the spiral effect of the nuts 18 and the supporting rods 17, the cover plate 16 is utilized to protect the direct brushless motor inside the shell 1, and the direct impact of external components inside the direct brushless motor is avoided.
In fig. 4 to 6, the limiting structure comprises four square round rods 20 which are annularly arranged in parallel, the square round rods 20 are positioned on the same horizontal plane, arc-shaped frames 21 are respectively fixed at the inner ends of the square round rods 20, arc-shaped pinch plates 22 are fixed at the tops of the arc-shaped frames 21, clamping heads 23 are fixed at the bottom ends of the rotating rods 19, a plurality of protruding rods 24 are annularly arranged on the outer side faces of the circumferences of the clamping heads 23, clamping holes corresponding to the protruding rods 24 are formed in the centers of the arc-shaped pinch plates 22, the arc-shaped frames 21 are limited on the surfaces of the clamping heads 23 by means of the arc-shaped pinch plates 22, and the arc-shaped pinch plates 22 are limited to the rotating rods 19 in a clamping fit mode through the clamping holes and the protruding rods 24. According to the clamping head 23 at the bottom of the rotary rod 19, a proper arc-shaped frame 21 is selected, the inner ends of a plurality of square round rods 20 are correspondingly buckled on the outer side face of the circumference of the clamping head 23 by utilizing the arc-shaped frame 21, and an arc-shaped buckle plate 22 at the top of the arc-shaped frame 21 is correspondingly buckled on the surface of a convex rod 24 of the clamping head 23 by utilizing a clamping hole, so that the rotary rod 19 is conveniently clamped by utilizing the arc-shaped frame 21 by utilizing the square round rods 20. The arc-shaped frames 21 are annularly wrapped on the outer side of the circumference of the clamping head 23, and the shell 1 drives the clamping head 23 and the rotating rod 19 to rotate by utilizing the square round rod 20 and the arc-shaped frames 21.
In fig. 4 to 6, an arc plate 25 is fixed on the surface of the square round bar 20, an elastic plate 26 is sleeved on the surface of the square round bar 20, square round holes corresponding to the square round bar 20 are formed in the top of the elastic plate 26, the elastic plate 26 is located on the outer side face of the arc plate 25, the square round bar 20 moves, the arc plate 25 drives the elastic plate 26 to be far away from the rotating rod 19, and the bottom of the elastic plate 26 presses the concave center of the rotor magnet 2. Pulling square round bar 20 removes, a plurality of square round bars 20 drive arc 25 keep away from each other, the concave surface in contact rotor magnet 2 bottom the outward convex surface of elastic plate 26, elastic plate 26 utilizes square round groove to slide on square round bar 20 surface, the dop 23 of bull stick 19 bottom corresponds and places between a plurality of arc frames 21 after, dop 23 continues to extrude square round bar 20 through arc frame 21, until after the concave surface in contact arc plate 25 of elastic plate 26, continue to remove square round bar 20, arc plate 25 and rotor magnet 2 cooperation extrusion elastic plate 26, utilize the elasticity of elastic plate 26 to improve the centre gripping effect of arc frame 21 to dop 23.
When the arc plate 25 extrudes the rotor magnet 2 through the elastic plate 26, the elastic force of the elastic plate 26 is applied to the top of the concave surface in the rotor magnet 2, so that the fitting degree of the rotor magnet 2 and the shell 1 is improved, and the integrity of the rotor magnet 2 and the shell 1 is further improved.
In fig. 4 to 6, the top surface of the housing 1 is fixed with a plurality of side plates 27, the plurality of side plates 27 are in one-to-one correspondence with the plurality of rotor magnets 2, and the outer ends of the square round bars 20 correspondingly penetrate through the center of the side plates 27, the center of the side plates 27 is provided with square round holes corresponding to the square round bars 20, and the outer ends of the square round bars 20 are spirally sleeved with fastening sleeves 28. When the square round rod 20 needs to be moved, the outer side end of the square round rod 20 penetrates through the side plate 27, the fastening sleeve 28 is screwed, the square round rod 20 is pulled away from the rotating rod 19 by the spiral effect of the fastening sleeve 28 and the square round rod 20, and the rotating rod 19 with different limiting structures is conveniently clamped by utilizing the elastic force fit of the fastening sleeve 28 and the elastic plate 26.
The invention also provides a running method of the brushless DC motor, which is applied to the brushless DC motor and is shown with reference to figures 1 to 6, and comprises the following steps:
s1, when a power supply supplies direct current energy to a coil 4, a control chip detects the current positions of a rotor magnet 2 and a stator magnetic steel sheet 3 according to Hall signals provided by a Hall sensor, then N and S magnetic poles are generated by the coil 4 on the surface of the stator magnetic steel sheet 3 through controlling a plurality of power tubes in pairs to attract S and N magnetic poles of the stator magnetic steel sheet 3 to generate torque, and N and S magnetic poles generated by the coil 4 inside the stator magnetic steel sheet 3 are alternately controlled according to the Hall signals through alternately controlling the energizing direction of the coil 4, so that the rotor magnet 2 drives a shell 1 to rotate;
s2, when the shell 1 rotates, the shell 1 drives the arc frame 21 and the arc buckle plate 22 to rotate by using the square round rod 20, and the arc buckle plate 22 drives the clamp head 23 and the rotating rod 19 to rotate by using the clamping hole and the convex rod 24 in a clamping fit manner, so that the brushless DC motor normally operates;
s3, when the rotor magnet 2 rotates, the rotor magnet 2 drives the shell 1 to synchronously rotate by utilizing the lug 9, the shell 1 limits the outer side face of the buckling lug 9 by utilizing the limiting ring 6, at the moment, the shell 1 and the rotor magnet 2 synchronously rotate, when the shell 1 drives the limiting ring 6 to rotate, the circumferential side face of the elastic sleeve 14 is extruded on the surface of the limiting ring 6 due to extrusion of the rubber rotating ring 15, and when the limiting ring 6 drives the elastic sleeve 14 to rotate on the surface of the limiting rod 13, the limiting rods 13 drive the rubber rotating ring 15 to rotate on the circumferential outer side face of the ring frame 10, so that protection of the DC brushless motor is completed.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting.
Claims (6)
1. The utility model provides a brushless DC motor, includes shell (1) to and be in four rotor magnet (2) of shell (1) inboard, four rotor magnet (2) are placed according to N pole and S pole in turn and are limited in shell (1) inboard, and four rotor magnet (2) center department is provided with stator magnetic steel sheet (3), and stator magnetic steel sheet (3) surface winding has coil (4), and coil (4) are formed by single wire around, and the external DC power supply in coil (4) both ends, coil (4) are adjacent but contactless with hall sensor, and hall sensor still links to each other with a plurality of power tubes, and hall sensor still is connected with control chip, its characterized in that: the outer circumferential side of the shell (1) is provided with an annular groove (5), the surface of the annular groove (5) of the shell (1) is correspondingly sleeved with a limiting ring (6), the centers of the outer convex surfaces of the rotor magnets (2) are respectively provided with a groove (7), the outer circumferential side of the annular groove (5) is annularly provided with a plurality of clamping grooves (8) in parallel, the clamping grooves (8) are in one-to-one correspondence with the grooves (7), the clamping grooves (8) and the grooves (7) are internally correspondingly buckled with a protruding block (9), the outer lateral surface of the protruding block (9) is attached to the inner lateral wall of the limiting ring (6), the outer side of the shell (1) is provided with a ring frame (10), the bottom surface of the inner side of the ring frame (10) is provided with a square rod (11), the top of the square rod (11) is correspondingly inserted into the center of the bottom surface of the stator magnetic steel sheet (3), the circumferential side surface of the ring frame (10) is provided with a plurality of side grooves (12), the inner side grooves (12) is fixedly provided with limiting rods (13), the surfaces of the limiting rods (13) are rotationally sleeved with elastic sleeves (14), and the circumferential side surfaces of the elastic sleeves (14) are attached to the outer circumferential sides of the limiting ring (6).
The circumferential outer side surface of the ring frame (10) is annularly sleeved with a rubber swivel (15), the circumferential inner side surface of the rubber swivel (15) is attached to the circumferential outer side surfaces of the plurality of elastic sleeves (14), and the rubber swivel (15) is in a tight state;
cover plate (16) have been placed at ring frame (10) top, cover plate (16) bottom surface annular equidistance is fixed with a plurality of branches (17), ring frame (10) top surface is provided with a plurality of sides, a plurality of sides and a plurality of branches (17) one-to-one, and branch (17) bottom is corresponding runs through the side, and nut (18) have been cup jointed to branch (17) bottom spiral, cover plate (16) top surface center department is provided with the through-hole, inside grafting of through-hole has bull stick (19), shell (1) top is provided with the limit structure that limits installation bull stick (19) bottom.
2. A brushless dc motor as claimed in claim 1, wherein:
the limiting structure comprises four annular parallel Fang Yuangan (20), a plurality of square round rods (20) are positioned on the same horizontal plane, arc-shaped frames (21) are respectively fixed at the inner ends of the square round rods (20), arc-shaped pinch plates (22) are fixed at the tops of the arc-shaped frames (21), clamping heads (23) are fixed at the bottom ends of rotating rods (19), a plurality of protruding rods (24) are annularly arranged on the outer circumferential side surfaces of the clamping heads (23), clamping holes corresponding to the protruding rods (24) are formed in the center of each arc-shaped pinch plate (22), the arc-shaped frames (21) are limited on the surfaces of the clamping heads (23) by means of the arc-shaped pinch plates (22), and the arc-shaped pinch plates (22) are limited to the rotating rods (19) through the clamping holes and the protruding rods (24) in a clamping fit mode.
3. A brushless dc motor as claimed in claim 2, wherein:
the square round bar (20) surface mounting has arc (25), elastic plate (26) have been cup jointed on square round bar (20) surface, and elastic plate (26) top is provided with the square round hole that corresponds with Fang Yuangan (20), elastic plate (26) are in arc (25) lateral surface, and square round bar (20) remove, and arc (25) drive elastic plate (26) and keep away from bull stick (19), and concave surface center department in elastic plate (26) bottom extrusion rotor magnet (2).
4. A brushless dc motor as claimed in claim 2, wherein:
the top surface of the shell (1) is fixedly provided with a plurality of side plates (27), the side plates (27) correspond to the rotor magnets (2) one by one, the outer side ends of the square round rods (20) correspondingly penetrate through the center of the side plates (27), square round holes corresponding to Fang Yuangan (20) are formed in the center of the side plates (27), and the outer side ends of the square round rods (20) are spirally sleeved with fastening sleeves (28).
5. A brushless dc motor as claimed in claim 2, wherein:
the arc-shaped frames (21) are annularly wrapped on the outer side of the circumference of the clamping head (23), and the shell (1) drives the clamping head (23) and the rotating rod (19) to rotate by using the Fang Yuangan (20) and the arc-shaped frames (21).
6. The running method of the direct current brushless motor is characterized in that: the operation method employs the brushless dc motor of claim 2, comprising the steps of:
s1, when a power supply supplies direct current energy to a coil (4), a control chip detects the current positions of a rotor magnet (2) and a stator magnetic steel sheet (3) according to Hall signals provided by a Hall sensor, then N and S magnetic poles are generated by the coil (4) on the surface of the stator magnetic steel sheet (3) and attracted with S and N magnetic poles of the stator magnetic steel sheet (3) by controlling a plurality of power tubes in pairs to generate torque, and N and S magnetic poles generated by the coil (4) inside the stator magnetic steel sheet (3) are rotated by alternately controlling the energizing direction of the coil (4) according to the Hall signals, so that the rotor magnet (2) drives a shell (1) to rotate;
s2, when the shell (1) rotates, the shell (1) drives the arc-shaped frame (21) and the arc-shaped buckle plate (22) to rotate by using the Fang Yuangan (20), and the arc-shaped buckle plate (22) drives the clamping head (23) and the rotating rod (19) to rotate by using the clamping hole to be in clamping fit with the convex rod (24), so that the direct-current brushless motor normally operates;
s3, when the rotor magnet (2) rotates, the rotor magnet (2) drives the shell (1) to synchronously rotate by utilizing the protruding blocks (9), the shell (1) limits the outer side faces of the buckling protruding blocks (9) by utilizing the limiting rings (6), at the moment, the shell (1) and the rotor magnet (2) synchronously rotate, when the shell (1) drives the limiting rings (6) to rotate, the circumferential side faces of the elastic sleeves (14) are extruded on the surfaces of the limiting rings (6) due to extrusion of the rubber rotating rings (15), and when the limiting rings (6) drive the elastic sleeves (14) to rotate on the surfaces of the limiting rods (13), the limiting rods (13) drive the rubber rotating rings (15) to rotate on the circumferential outer side faces of the ring frames (10), so that protection of the direct-current brushless motor is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311059905.1A CN116780813B (en) | 2023-08-22 | 2023-08-22 | DC brushless motor and running method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311059905.1A CN116780813B (en) | 2023-08-22 | 2023-08-22 | DC brushless motor and running method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116780813A CN116780813A (en) | 2023-09-19 |
| CN116780813B true CN116780813B (en) | 2023-10-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311059905.1A Active CN116780813B (en) | 2023-08-22 | 2023-08-22 | DC brushless motor and running method thereof |
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| Country | Link |
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| CN (1) | CN116780813B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101925803B1 (en) * | 2017-11-27 | 2018-12-06 | 효성전기주식회사 | Motor having a stopper for preventing flow to an external impact |
| CN216122038U (en) * | 2021-07-27 | 2022-03-22 | 广东罗曼智能科技股份有限公司 | Improved brushless motor |
| CN218276324U (en) * | 2022-09-30 | 2023-01-10 | 安阳恒安电机有限公司 | Impact-resistant permanent magnet direct current brushless motor |
-
2023
- 2023-08-22 CN CN202311059905.1A patent/CN116780813B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101925803B1 (en) * | 2017-11-27 | 2018-12-06 | 효성전기주식회사 | Motor having a stopper for preventing flow to an external impact |
| CN216122038U (en) * | 2021-07-27 | 2022-03-22 | 广东罗曼智能科技股份有限公司 | Improved brushless motor |
| CN218276324U (en) * | 2022-09-30 | 2023-01-10 | 安阳恒安电机有限公司 | Impact-resistant permanent magnet direct current brushless motor |
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| Publication number | Publication date |
|---|---|
| CN116780813A (en) | 2023-09-19 |
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