CN213072261U

CN213072261U - Miniature DC driving motor

Info

Publication number: CN213072261U
Application number: CN202022365377.0U
Authority: CN
Inventors: 谢发森
Original assignee: Dexentic Transmission Equipment Shenzhen Co ltd
Current assignee: Dexentic Transmission Equipment Shenzhen Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-04-27
Anticipated expiration: 2030-10-21

Abstract

The utility model relates to the technical field of electric motor, a miniature direct current driving motor is disclosed, the on-line screen storage device comprises a base, a housing, the permanent magnet stator, a rotating shaft, rotor core, rotor winding coil, commutator and brush, casing detachable sets up in the upper end of base, the permanent magnet stator sets up respectively on the internal perisporium of casing, rotor core sets up in the pivot, the lower tip and the base rotatable coupling of pivot, rotor winding coil is the coiling respectively on the periphery wall of wire winding portion, the commutator sets up in the lower tip of pivot, rotor winding coil is connected with the commutator electricity, the brush is relative respectively sets up in the both sides of the interior diapire of base, the one end of brush is equipped with an elastic arm respectively, elastic arm is connected with the periphery wall butt electricity of. The technical scheme of the utility model can make direct current motor's assembly convenient and fast more, improved efficiency, and small in size, the quality is light, convenient to use, the practicality is strong.

Description

Miniature DC driving motor

Technical Field

The utility model relates to the technical field of motors, in particular to miniature direct current driving motor.

Background

The brush DC motor is a DC motor, the stator of the brush motor is provided with a fixed main pole and a brush, and the rotor is provided with an armature winding and a commutator. Electric energy of a direct current power supply enters an armature winding through an electric brush and a commutator to generate armature current, and a magnetic field generated by the armature current interacts with a main magnetic field to generate electromagnetic torque so that a motor rotates to drive a load.

However, most of the existing dc motors are large in size, cumbersome to assemble, low in efficiency, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a miniature DC drive motor, it is great to aim at solving current DC motor volume, and the assembly is loaded down with trivial details, the technical problem of inefficiency.

In order to achieve the above object, the present invention provides a micro dc driving motor, which comprises a base, a housing, a permanent magnet stator, a rotating shaft, a rotor core, a rotor winding coil, a commutator, and brushes, wherein the housing is arranged in a cylindrical structure, the permanent magnet stator is arranged in a curved structure, the housing is detachably mounted on the upper end of the base, the permanent magnet stator is respectively arranged on the inner peripheral wall of the housing in an opposite and detachable manner, the rotor core is arranged on the rotating shaft, the rotor core is rotatably mounted on the inner side of the permanent magnet stator, the upper end of the rotating shaft rotatably extends out of the upper end of the housing, the lower end of the rotating shaft is rotatably connected with the base, the outer peripheral wall of the rotor core is symmetrically provided with three winding portions, just wire winding portion is kept away from the one end of rotor core's axial lead is equallyd divide and is do not equipped with a convex baffle, convex baffle surrounds and forms a cylinder structure, two adjacent interval connection between the convex baffle, just the periphery wall of convex baffle with the internal perisporium interval connection of permanent magnet stator, rotor winding coil respectively the coiling in on the periphery wall of wire winding portion, the commutator set up in the lower tip of pivot, and follow the pivot rotates, rotor winding coil with the commutator electricity is connected, the brush respectively relative set up in the both sides of the inner diapire of base, the one end of brush is equipped with an elastic arm respectively, the elastic arm respectively with the periphery wall butt electricity of commutator is connected, just the lower tip of brush stretches out respectively the lower extreme wall setting of base.

Furthermore, the middle of the inner circumferential wall of the shell is provided with a spring plate in a protruding mode, the upper end portion of the inner circumferential wall of the shell is provided with a limiting protrusion in a protruding mode, the two side walls of the permanent magnet stator are respectively abutted to the lower end wall of the spring plate, and the upper end wall of the permanent magnet stator is respectively abutted to the limiting protrusion.

Furthermore, the lower tip of the internal perisporium of casing is equipped with a plurality of elasticity buckle arms along the circumferencial direction arch, elasticity buckle arm respectively with the butt setting can be dismantled to the lower tip wall of base.

Further, still include the bearing, the upper end wall of casing and the lower extreme wall of base are equipped with a bearing hole of concave respectively, the bearing inlays respectively to be located set up in the bearing hole, the both ends of pivot respectively with bearing fixed connection, the both ends of pivot are passed through respectively the bearing with the upper end wall and the base of casing rotate to be connected.

Furthermore, a plurality of air holes are concavely arranged on the upper end wall of the shell along the circumferential direction.

Furthermore, a through groove is oppositely and concavely arranged at the lower end part of the peripheral wall of the shell.

Furthermore, two opposite ends of the base are respectively and oppositely provided with a circular arc-shaped mounting hole in a concave mode.

Furthermore, the permanent magnet stator is formed by adopting a rare earth neodymium iron boron material.

Further, the rotor core is formed by adopting silicon steel sheets.

Further, the shell and the base are both made of aluminum alloy materials.

Adopt the technical scheme of the utility model, following beneficial effect has: the technical proposal of the utility model is that the permanent magnet stator is respectively opposite and detachably arranged on the inner peripheral wall of the shell through the detachable shell body arranged at the upper end part of the base, the rotor core is arranged on the rotating shaft and can be rotatably arranged at the inner side of the permanent magnet stator, the upper end part of the rotating shaft can rotatably extend out of the upper end wall of the shell body, the lower end part of the rotating shaft is rotatably connected with the base, the outer peripheral wall of the rotor core is symmetrically provided with three winding parts along the circumferential direction, one end of the winding part far away from the axial lead of the rotor core is respectively provided with an arc-shaped baffle, the arc-shaped baffles surround to form a cylinder structure, two adjacent arc-shaped baffles are connected at intervals, the outer peripheral wall of the arc-shaped baffle is connected with the inner peripheral wall of the permanent magnet stator at intervals, the rotor winding coil is, and rotate along with the pivot, rotor winding coil is connected with the commutator electricity, the brush is relative respectively sets up in the both sides of the inner diapire of base, the one end of brush is equipped with an elastic arm respectively, the elastic arm is connected with the periphery wall butt electricity of commutator respectively, and the lower tip of brush stretches out the lower terminal wall setting of base respectively to make direct current motor's assembly convenient and fast more, improved efficiency, and small in size, the quality is light, convenient to use, the practicality is strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a micro dc driving motor according to an embodiment of the present invention;

fig. 2 is a schematic view of an overall structure of another view angle of a micro dc driving motor according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a micro dc driving motor according to an embodiment of the present invention;

fig. 4 is a schematic partial structural view of a micro dc driving motor according to an embodiment of the present invention;

fig. 5 is another schematic structural diagram of a portion of a micro dc driving motor according to an embodiment of the present invention.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a miniature direct current drive motor.

As shown in fig. 1 to 5, in an embodiment of the present invention, the micro dc driving motor includes a base 101, a housing 102, a permanent magnet stator 103, a rotating shaft 104, a rotor core 105, a rotor winding 106, a commutator 107 and brushes 108, wherein the housing 10 is configured in a cylindrical structure, the permanent magnet stator 103 is configured in a curved structure, the housing 102 is detachably disposed at an upper end of the base 101, the permanent magnet stators 103 are respectively disposed on inner peripheral walls of the housing 102 in an opposite and detachable manner, the rotor core 105 is disposed on the rotating shaft 104, the rotor core 105 is rotatably disposed at an inner side of the permanent magnet stator 103, an upper end of the rotating shaft 104 rotatably extends out of the upper end wall of the housing 102, and a lower end of the rotating shaft 104 is rotatably connected to the base 101, three winding portions 1051 are symmetrically and convexly arranged on the outer peripheral wall of the rotor core 105 along the circumferential direction, one end of each winding portion 1051, which is far away from the axial lead of the rotor core 105, is provided with an arc-shaped baffle 1052, the arc-shaped baffles 1052 surround to form a cylindrical structure, two adjacent arc-shaped baffles 1052 are connected at intervals, the outer peripheral wall of each arc-shaped baffle 1052 is connected at intervals with the inner peripheral wall of the permanent magnet stator 103, the rotor winding coils 106 are respectively wound on the outer peripheral wall of the winding portions 1051, the commutator 107 is arranged at the lower end of the rotating shaft 104 and rotates along with the rotating shaft 104, the rotor winding coils 106 are electrically connected with the commutator 107, the brushes 108 are respectively arranged on two sides of the inner bottom wall of the base 101 in an opposite manner, one end of each brush 108 is provided with an elastic arm 1081, and the elastic arms 1081 are respectively abutted against and electrically connected with the outer peripheral wall of the commutator 107, and the lower end portions of the brushes 108 are respectively arranged to extend out of the lower end wall of the base 101.

Specifically, the middle of the inner circumferential wall of the housing 102 is provided with a spring plate 1021 in a protruding manner, the upper end of the inner circumferential wall of the housing 102 is provided with a limiting protrusion 1022 in a protruding manner, the two side walls of the permanent magnet stator 103 are respectively abutted to the lower end wall of the spring plate 1021, and the upper end wall of the permanent magnet stator 103 is abutted to the limiting protrusion 1022, so that the permanent magnet stator can be assembled more conveniently and rapidly.

Specifically, the lower tip of the internal perisporium of casing 102 is equipped with a plurality of elasticity buckle arms 1023 along the protruding butt setting that is equipped with respectively of circumferencial direction, elasticity buckle arm 1023 with the lower tip wall of base 101 can be dismantled for the casing is swift with the convenient assembling of base.

Specifically, still include bearing 109, the upper end wall of casing 102 and the lower extreme wall of base 101 are equipped with a bearing hole 110 in a concave way respectively, bearing 109 inlays respectively to be located set up in the bearing hole 110, the both ends of pivot 104 respectively with bearing 109 fixed connection, the both ends of pivot 104 pass through respectively bearing 109 with the upper end wall of casing 102 and base 101 rotate to be connected.

Specifically, the upper end wall of the housing 102 is concavely provided with a plurality of air holes 1024 along the circumferential direction, so as to perform the functions of ventilation and heat dissipation.

Specifically, a through groove 1025 is oppositely recessed at the lower end of the outer peripheral wall of the housing 102, so as to perform the functions of ventilation and heat dissipation.

Specifically, two opposite ends of the base 101 are respectively and concavely provided with a circular arc-shaped mounting hole 1011, so that the motor can be conveniently mounted and fixed.

Specifically, the permanent magnet stator 103 is formed by adopting a rare earth neodymium iron boron material, and the rare earth neodymium iron boron is a permanent magnet material with the highest magnetism and has the advantages of high coercive force and high magnetic energy product, so that the permanent magnet stator becomes an ideal material for manufacturing magnetic functional devices with high efficiency, small size and light weight, the mass of the motor can be obviously reduced, the external dimension of the motor is reduced, and the high-efficiency energy-saving effect and the performance of the motor can be obtained.

Specifically, the rotor core 105 is formed by using silicon steel sheets, the resistivity and the maximum permeability of iron can be improved by adding silicon, the coercive force, the core loss (iron loss) and the magnetic aging are reduced, and the magnetic induction intensity (magnetic induction) is high under a strong magnetic field, so that the volume and the weight of the core of the motor are reduced.

Specifically, the casing 102 and the base 101 are both made of aluminum alloy, so that the aluminum alloy is high in strength and light in weight, and the service life of the motor is effectively prolonged.

Specifically, the utility model discloses a theory of operation does: a pair of permanent magnet main magnetic poles (N pole and S pole) fixed in a shell generates a fixed magnetic field around a rotor iron core, the rotor iron core is provided with a plurality of winding coils, when the winding coils are excited, a magnetic field is generated, the magnetic poles of the rotor magnetic field attract the opposite magnetic poles of the stator magnetic field, so that the stator rotates, the windings are continuously excited according to different sequences in the rotation process of the motor, therefore, the magnetic poles generated by the rotor never overlap with the magnetic poles generated by the stator, the conversion of the magnetic field in the rotor winding is called commutation, different from other motor types, the direct current brush motor does not need a controller to switch the direction of current in an electrode winding, and completes the commutation of the motor winding in a mechanical mode, a commutator is arranged on a rotating shaft of the motor, and the brush slides along the commutator along with the rotation of the rotating shaft of the motor, in contact with the various segments of the commutator which are electrically connected to the various rotor winding coils, so that when the brushes are energized, a dynamic magnetic field is generated within the motor, thereby causing the motor to continue to rotate.

Specifically, the utility model is arranged at the upper end part of the base through the detachable shell, the permanent magnet stator is respectively opposite and detachably arranged at the inner peripheral wall of the shell, the rotor core is arranged on the rotating shaft and can be rotatably arranged at the inner side of the permanent magnet stator, the upper end part of the rotating shaft can be rotatably extended out of the upper end wall of the shell, the lower end part of the rotating shaft is rotatably connected with the base, the outer peripheral wall of the rotor core is symmetrically and convexly provided with three winding parts along the circumferential direction, one ends of the winding parts, which are far away from the axial lead of the rotor core, are respectively provided with an arc-shaped baffle, the arc-shaped baffles surround to form a cylinder structure, two adjacent arc-shaped baffles are connected at intervals, the outer peripheral wall of each arc-shaped baffle is connected with the inner peripheral wall of the permanent magnet stator at intervals, rotor, and rotate along with the pivot, rotor winding coil is connected with the commutator electricity, the brush is relative respectively sets up in the both sides of the inner diapire of base, the one end of brush is equipped with an elastic arm respectively, the elastic arm is connected with the periphery wall butt electricity of commutator respectively, and the lower tip of brush stretches out the lower terminal wall setting of base respectively to make direct current motor's assembly convenient and fast more, improved efficiency, and small in size, the quality is light, convenient to use, the practicality is strong.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The utility model provides a miniature direct current driving motor, its characterized in that, includes base, casing, permanent magnet stator, pivot, rotor core, rotor winding coil, commutator and brush, the casing is the setting of cylindrical structure, the appearance of permanent magnet stator is the setting of circular arc curved surface shape structure, casing detachable set up in the upper end of base, the permanent magnet stator is relative respectively and detachable set up on the internal perisporium of casing, rotor core set up in the pivot, just rotor core is rotatable set up in the inboard of permanent magnet stator, the upper end of pivot is rotatable stretches out the upper end wall setting of casing, the lower tip of pivot with base rotatable coupling, the protruding three wire winding portion that is equipped with of circumferencial direction symmetry is followed to rotor core's periphery wall, just the wire winding portion is kept away from the one end of rotor core's axial lead is equallyd divide and is equipped with a convex baffle respectively, the utility model discloses a permanent magnet motor, including base, circular arc baffle, commutator, rotor winding coil, brush, base, outer peripheral wall, commutator, outer peripheral wall, rotor winding coil, outer peripheral wall, commutator, outer peripheral wall, rotor winding coil, outer peripheral wall, commutator, outer peripheral wall, inner peripheral wall, outer peripheral wall, inner peripheral wall.

2. The micro direct current drive motor according to claim 1, wherein a spring plate is convexly provided in the middle of the inner circumferential wall of the housing, a limiting protrusion is convexly provided at the upper end of the inner circumferential wall of the housing, the two side walls of the permanent magnet stator are respectively abutted to the lower end wall of the spring plate, and the upper end wall of the permanent magnet stator is respectively abutted to the limiting protrusion.

3. The micro dc driving motor according to claim 1, wherein a plurality of elastic latching arms are protruded from a lower end portion of an inner peripheral wall of the housing in a circumferential direction, and the elastic latching arms are detachably abutted to a lower end wall of the base, respectively.

4. The micro direct current drive motor according to claim 1, further comprising a bearing, wherein a bearing hole is respectively concavely formed on the upper end wall of the housing and the lower end wall of the base, the bearing is respectively embedded in the bearing hole, two ends of the rotating shaft are respectively fixedly connected with the bearing, and two ends of the rotating shaft are respectively rotatably connected with the upper end wall of the housing and the base through the bearing.

5. The micro dc driving motor according to claim 1, wherein the upper end wall of the housing is recessed with a plurality of ventilation holes along a circumferential direction.

6. The micro dc driving motor according to claim 1, wherein a through groove is recessed in a lower end portion of the outer peripheral wall of the housing.

7. The micro direct current drive motor according to claim 1, wherein the two ends of the base are respectively provided with a circular arc-shaped mounting hole in a concave manner.

8. The miniature dc driving motor of claim 1, wherein said permanent magnet stator is formed of a rare earth neodymium iron boron material.

9. The micro direct current drive motor according to claim 1, wherein the rotor core is formed of a silicon steel sheet.

10. The micro dc driving motor according to claim 1, wherein the housing and the base are made of an aluminum alloy.