Double-winding direct-current brushless motor

Abstract

The utility model discloses a double-winding direct current brushless motor, which relates to the field of motors and comprises a motor shell additionally provided with double windings, a direct current brushless motor rotor is rotatably connected in the motor shell, one end of the direct current brushless motor rotor is sleeved with a sealing cover and is connected with a heat dissipation fan, and the sealing cover is matched with the motor shell in an inserted mode. The motor shell is in threaded connection with a connecting assembly, and one end of the motor shell is in threaded connection with a hollow protective cylinder; the connecting assembly comprises an inner gear ring rotationally limited outside the motor shell, a plurality of tooth studs are in meshing transmission with one side of the inner gear ring, and the tooth studs are rotationally matched with the motor shell and are in threaded connection with the sealing cover. According to the double-winding direct-current brushless motor, through the unique design of the connecting assembly, namely meshing transmission of the inner gear ring and the multiple tooth studs, the multiple tooth studs can be synchronously driven to rotate only by rotating the inner gear ring, rapid fastening or loosening of the sealing cover is achieved, operation is easy and convenient, and the assembling and disassembling efficiency of the motor is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field, concretely is a kind of double-winding direct current brushless motor. BACKGROUND

[0002] With the continuous development of science and technology, direct current brushless motor has been widely used in many fields due to its high efficiency, low noise, long service life and other advantages. In the field of industrial automation, its high-precision speed control characteristics are used in core equipment such as numerical control machine tools and automated production lines to ensure the accuracy and stability of the production process. In the smart home scenario, intelligent curtains, robotic vacuum cleaners and air purifiers driven by direct current brushless motors run quietly and save energy, improving the quality of life of users. In the electric vehicle industry, it is a core component of the power system, directly affecting the range and power performance of the vehicle.

[0003] However, the existing direct current brushless motor still has some deficiencies. From the perspective of structural design, some motors use complex assembly structures, and the matching precision between parts is extremely high, and there is a lack of effective foolproof design, which leads to the need for technicians to spend a lot of time on debugging and calibration during actual installation, affecting installation efficiency and increasing labor costs. In terms of winding structure, some motors are tightly arranged with two sets of windings, even with some overlap. This unreasonable design has many hidden dangers. On the one hand, the overlapping area of the windings is difficult to dissipate heat, which can cause insulation layer aging and short circuit failure due to high local temperature. On the other hand, when one set of windings has a short circuit or other problems, electromagnetic interference will occur to the other set of windings due to electromagnetic coupling, which will seriously affect the normal operation of the windings and greatly reduce the reliability and service life of the motor.

[0004] The document with the prior art publication number CN216356259U provides a double-winding direct current brushless motor. In the related technology, multiple mounting holes are provided on the base to improve the stability between the base and the installed position. By setting positioning rods, gaskets, nuts and limit rings, the multiple positioning rods are inserted into the multiple positioning holes on the casing, the front cover plate and the rear cover plate are respectively sleeved between the multiple positioning rods, the gasket is sleeved on the positioning rod, and the nut is screwed on the positioning rod, achieving the effect of facilitating the installation of the motor.

[0005] Although the above-mentioned prior art solution can achieve the beneficial effects of the prior art, it still has the following defects: the multiple positioning rods are connected by threads, which is not only tedious to adjust, but also the torque adjustment between the multiple positioning rods cannot be controlled, which can cause the front and rear cover plates to be not installed firmly enough.

[0006] Therefore, it is necessary to provide a double-winding direct current brushless motor. Practical new content

[0007] In view of the deficiencies of the prior art, the utility model provides a double winding's direct current brushless motor to solve the problems in the prior art.

[0008] In order to realize the above object, the utility model provides the following technical scheme: a double winding's direct current brushless motor, including the motor shell of double winding's installation, the motor shell inside rotation is connected with direct current brushless motor rotor, direct current brushless motor rotor one end is equipped with the cover, and is connected with the cooling fan, the cover with the motor shell between the insertion joint cooperation, and the threaded connection has the connecting assembly, the connecting assembly installs in the motor shell outside, and the motor shell one end is screwed with the hollow protective cylinder;

[0009] The connecting assembly includes the internal gear ring of rotation limit in the motor shell outside, a plurality of toothed studs are engaged in drive on the one side of the internal gear ring, the toothed stud is rotationally matched with the motor shell, and is screwed with the cover.

[0010] Preferably, the one end of the motor shell fixedly connected with the heat sink is fixedly connected with an external thread groove ring, and the external thread groove ring is screw-fitted with the hollow protective cylinder.

[0011] Preferably, a plurality of air holes are arranged on the external thread groove ring in an annular equidistant structure.

[0012] Preferably, the internal gear ring is composed of two half-ring structure tooth rings connected by an internal hexagonal bolt, and the tooth rings are externally provided with all insertion holes.

[0013] Preferably, the toothed stud includes a gear, a threaded column is inserted in the middle of the gear, and the threaded column and the gear are connected and limited by a bolt.

[0014] Preferably, the threaded column is externally sleeved with a pressure bearing relative to the positions on both sides of the gear.

[0015] The utility model provides a double winding's direct current brushless motor.Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1、 the double winding's direct current brushless motor, through the unique design of connecting assembly, namely the engagement drive of internal gear ring and a plurality of toothed studs, only need to rotate internal gear ring, can synchronous drive a plurality of toothed studs rotation, realize the quick fastening or loosening of cover, easy operation, greatly improve the assembly and disassembly efficiency of motor, solve the problem that a plurality of positioning rods are adjusted complicatedly and torque is difficult to control in the prior art, ensure the firmness of the connection between cover and motor shell.

[0017] 2、The double-winding brushless DC motor forms a good heat dissipation system through the cooperation of the heat dissipation fins on the motor shell, the air holes on the outer threaded groove ring and the heat dissipation fan. The heat dissipation fins increase the heat dissipation area, the air holes promote air convection, and the heat dissipation fan actively accelerates air flow, effectively solving the problem of difficult winding heat dissipation of existing motors, reducing the risk of insulation layer aging and short circuit failure caused by local high temperature, and improving the reliability and service life of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the connection assembly structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the motor shell structure of the utility model;

[0021] Figure 4 It is a split schematic diagram of the tooth stud structure of the utility model.

[0022] In the figure: 1, motor shell; 2, brushless DC motor rotor; 3, cover; 4, heat dissipation fan; 5, connection assembly; 6, hollow protective cylinder; 11, outer threaded groove ring; 12, air hole; 51, inner gear ring; 52, tooth stud; 53, jack; 54, gear; 55, threaded column. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figure 1 and Figure 2 The utility model provides a technical scheme: a double-winding brushless DC motor, including the motor shell 1 of adding double-winding, the motor shell 1 inside rotationally connected with brushless DC motor rotor 2, brushless DC motor rotor 2 one end is equipped with cover 3, and is connected with heat dissipation fan 4, cover 3 and motor shell 1 between the plug-in cooperation, and is connected with connection assembly 5 by screwing, connection assembly 5 installs in the motor shell 1 outside, and motor shell 1 one end is connected with hollow protective cylinder 6 by screwing;

[0025] The connecting assembly 5 comprises an inner gear ring 51 rotatingly limited outside the motor shell 1, which is engaged with a plurality of toothed studs 52 on one side, the toothed studs 52 are rotationally matched with the motor shell 1 and are threadedly connected with the cover 3.

[0026] At this time, it is worth noting that when installing the motor, the brushless DC motor rotor 2 can be installed inside the motor shell 1 first, and then the cover 3 is sleeved on one end of the brushless DC motor rotor 2 and is inserted and positioned with the motor shell 1. Then, by inserting a tool into the insertion hole 53 of the inner gear ring 51, the inner gear ring 51 is rotated, and the plurality of toothed studs 52 engaged with the inner gear ring 51 are synchronously rotated. Since the toothed studs 52 are threadedly connected with the cover 3, as the toothed studs 52 rotate, the cover 3 gradually connects tightly with the motor shell 1, completing the installation process. When disassembling, the cover 3 can be easily removed by reversing the rotation of the inner gear ring 51.

[0027] As Figure 3 and Figure 1 , one end of the motor shell 1 externally fixed with the heat sink is fixed with an external thread groove ring 11, and the external thread groove ring 11 is threadedly adapted with the hollow protective cylinder 6, wherein a plurality of air holes 12 are formed in the outer ring-shaped equidistant structure of the external thread groove ring 11.

[0028] At this time, it is worth noting that during the operation of the motor, the heat generated inside the motor is conducted to the heat sink through the motor shell 1, and at the same time, external air can enter the inside of the motor through the air holes 12. Under the action of the cooling fan 4, the air flows in the motor and is discharged from other parts of the motor after taking away the heat, achieving good heat dissipation effect. If the inside of the motor needs to be maintained, the hollow protective cylinder 6 can be rotated to separate it from the external thread groove ring 11, so that the operator can conveniently overhaul the inside of the motor.

[0029] As Figure 2 , the inner gear ring 51 is composed of two half-ring type tooth rings connected by a hexagonal socket head cap screw, and the tooth rings are provided with insertion holes 53 outside.

[0030] At this time, it is worth noting that when installing the inner gear ring 51, the two half-ring type tooth rings can be placed in the corresponding positions outside the motor shell 1 first, and then the two half-ring type tooth rings are connected and fixed by the hexagonal socket head cap screw to form the complete inner gear ring 51. In subsequent operation, a tool can be inserted into the insertion hole 53 to conveniently rotate the inner gear ring 51.

[0031] As Figure 4 and Figure 2 , the toothed stud 52 comprises a gear 54, a threaded column 55 is inserted in the middle of the gear 54, and the threaded column 55 and the gear 54 are connected and limited by a bolt, wherein the threaded column 55 is sleeved with a pressure bearing outside relative to the positions of the two sides of the gear 54.

[0032] At this time, it is worth noting that when the inner gear ring 51 rotates, the teeth thereof engage with the gear 54 of the toothed stud 52, driving the gear 54 to rotate, and since the threaded stud 55 is connected and limited by the bolt with the gear 54, the rotation of the gear 54 drives the threaded stud 55 to rotate synchronously. During the rotation of the threaded stud 55, the pressure bearing plays a role in reducing friction, making the rotation of the toothed stud 52 more smooth, and also reducing the wear between the gear 54 and the threaded stud 55, improving the service life of the connecting assembly 5.

[0033] In use, when installing the motor, the brushless DC motor rotor 2 can be installed inside the motor housing 1 first, and then the cover 3 is sleeved on one end of the brushless DC motor rotor 2 and is initially positioned with the motor housing 1 by insertion;

[0034] Then, the tool is inserted into the insertion hole 53 of the inner gear ring 51, and the inner gear ring 51 is rotated, driving the plurality of toothed studs 52 engaged therewith to rotate synchronously, and since the toothed studs 52 are threadedly connected with the cover 3, with the rotation of the toothed studs 52, the cover 3 is gradually connected with the motor housing 1 tightly, completing the installation process.

[0035] After the motor is powered on, the brushless DC motor rotor 2 rotates inside the motor housing 1, driving the cooling fan 4 to rotate and work.

[0036] It should be noted that in this text, relational terms such as first and second and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent to such a process, method, article, or apparatus. Without more limitations, the statement "comprises a limited element" does not exclude the presence of additional identical elements in the process, method, article, or apparatus including the element.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A dual-winding brushless DC motor, characterized by comprising: Include: The motor shell (1) is rotatably connected with a direct current brushless motor rotor (2) inside, the direct current brushless motor rotor (2) one end is provided with cover (3), and is connected with heat dissipation fan (4), the cover (3) and the motor shell (1) between the plug-in cooperation, and is connected with the connecting assembly (5) by screwing, the connecting assembly (5) is installed in the motor shell (1) outside, and the motor shell (1) one end is connected with hollow protective cylinder (6) by screwing; The connecting assembly (5) includes a rotary limit in the motor shell (1) outside internal gear ring (51), the internal gear ring (51) one side is engaged with a plurality of toothed studs (52), the toothed stud (52) is rotatably connected with the motor shell (1), and is connected with the cover (3) by screwing.

2. A dual-winding brushless DC motor according to claim 1, characterized in that: The motor shell (1) is rotatably connected with the motor shell (1) one end of the external thread groove ring (11), the external thread groove ring (11) and the hollow protective cylinder (6) are screwing adapted.

3. A dual-winding brushless DC motor according to claim 2, characterized in that: The external thread groove ring (11) is rotatably connected with the motor shell (1) one end of the external thread groove ring (11), the external thread groove ring (11) and the hollow protective cylinder (6) are screwing adapted.

4. A dual-winding brushless DC motor according to claim 1, characterized in that: The internal gear ring (51) is rotatably connected with the motor shell (1) one end of the external thread groove ring (11), the external thread groove ring (11) and the hollow protective cylinder (6) are screwing adapted.

5. A dual-winding brushless DC motor according to claim 1, characterized in that: The internal gear ring (51) is rotatably connected with the motor shell (1) one end of the external thread groove ring (11), the external thread groove ring (11) and the hollow protective cylinder (6) are screwing adapted.

6. A dual-winding brushless DC motor according to claim 5, characterized in that: The toothed stud (52) includes a gear (54), a threaded column (55) is inserted in the middle of the gear (54), and the threaded column (55) and the gear (54) are connected by bolt limit. The threaded column (55) is rotatably connected with the motor shell (1) one end of the external thread groove ring (11), the external thread groove ring (11) and the hollow protective cylinder (6) are screwing adapted.

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