CN214900497U

CN214900497U - Brushless DC motor

Info

Publication number: CN214900497U
Application number: CN202121640645.3U
Authority: CN
Inventors: 程伟民
Original assignee: Shaoxing Hengli Motor Co ltd
Current assignee: Shaoxing Hengli Motor Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-11-26
Anticipated expiration: 2031-07-19

Abstract

The utility model discloses a brushless DC motor, which comprises a motor shell internally provided with a machine cabin and buffer boxes symmetrically and fixedly arranged at the top and the bottom of one side of the motor shell, two buffer boxes are internally and fixedly provided with springs, the opposite ends of the two springs are fixedly connected with limiting plates, the opposite sides of the two limiting plates are fixedly connected with extrusion plates penetrating out of the buffer boxes in the middle, the opposite ends of the two extrusion plates are fixedly connected with arc-shaped lower pressing plates, the inner edge surfaces of the arc-shaped lower pressing plates are centrally and rotatably provided with rollers, a mounting frame is fixedly arranged in the machine cabin, an output shaft is arranged in the mounting frame in a rotating way, a plurality of air exchange fan blades arranged in the machine cabin are fixedly arranged on the outer edge surfaces of the output shaft in an annular array way, one end of the output shaft extends out of the machine cabin, the brushless DC motor has reasonable structure, tremble range convenient to slow down the output shaft, and be convenient for dispel the heat, promote heat dissipation cooling effect, the practicality is strong.

Description

Brushless DC motor

Technical Field

The utility model belongs to the technical field of brushless motor, concretely relates to brushless DC motor.

Background

The brushless direct current motor is composed of a motor main body and a driver, and is a typical electromechanical integration product. Brushless motors are motors without brushes and commutators (or collector rings), also called commutatorless motors, in which the stator windings of the motors are usually made in a three-phase symmetrical star connection, very similar to three-phase asynchronous motors.

Present brushless motor is under long-time use, and tremble easily appears in the output shaft rotation in-process, and then leads to the normal use of motor to receive the influence, and current brushless motor can't realize initiative heat dissipation in the use, and brushless motor is too high in the course of the work inside heat easily leads to the overheated damage of components and parts, and then influences the normal work of motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a brushless DC motor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a brushless direct current motor comprises a motor shell and buffer boxes, wherein the motor shell is internally provided with a motor cabin, and the buffer boxes are symmetrically and fixedly arranged at the top and the bottom of one side of the motor shell;

springs are fixedly arranged in the two buffer boxes, the opposite ends of the two springs are fixedly connected with limiting plates, the opposite sides of the two limiting plates are fixedly connected with extrusion plates penetrating out of the buffer boxes in the middle, the opposite ends of the two extrusion plates are fixedly connected with arc-shaped lower pressing plates, and rollers are rotatably arranged on the inner edge surfaces of the arc-shaped lower pressing plates in the middle;

the aircraft cabin internal fixation is provided with the mounting bracket, the mounting bracket internal rotation is provided with the output shaft, be annular array fixed mounting on the outer fringe face of output shaft and be a plurality of setting up the flabellum of taking a breath in the aircraft cabin.

Preferably, one end of the output shaft extends out of the machine cabin, and the outer edge surface of the roller is in rolling contact with the outer edge surface of the output shaft.

Preferably, the upper end face of the motor shell is provided with a rectangular groove which is communicated with the machine cabin and is used for detachably mounting the rectangular net frame, and the rectangular net frame is internally and fixedly provided with a dust screen used for reducing dust entering the machine cabin.

Preferably, a through groove which is communicated with a machine bin and used for fixedly installing a ventilation net is formed in one surface, far away from the buffer box, of the motor shell, side plates are fixedly installed at the bottoms of the two sides of the motor shell, and a plurality of fixing pieces used for fixedly installing the motor shell are arranged in the side plates at equal intervals.

Preferably, both ends of motor casing all are fixed and are provided with the installing frame, two the both sides of installing frame are all constructed the extension board between two parties, a plurality of screw holes have been seted up to the equidistance in the extension board.

Preferably, two all set up the cell body that supplies pivot normal running fit installation on the inner fringe face of arc holding down plate, gyro wheel fixed mounting is on the outer fringe face of pivot to borrow by the pivot and rotate.

The utility model discloses a technological effect and advantage: the brushless direct current motor has the advantages that due to the arrangement of the buffer box, the extrusion plate, the arc-shaped lower pressing plate, the roller, the spring and the limiting plate, under the elastic force action of the spring, the limiting plate can push the extrusion plate to move so as to drive the arc-shaped lower pressing plate to move, the roller is enabled to rotate and abut against the outer edge surface of the output shaft, and when the output shaft is vibrated in the rotating process in long-time use, the spring can buffer to reduce the vibration amplitude, so that the auxiliary motor can work normally;

benefit from output shaft, mounting bracket and the setting of flabellum of taking a breath, this motor is carrying out the in-process of work, and the output shaft rotates, and then drives the flabellum of taking a breath and rotate for the heat that produces in this motor working process is discharged from the interior of the machine storehouse under the rotation of the flabellum of taking a breath, avoids the overheated damage of components and parts that leads to the too high inside heat in the working process, provides the guarantee of certain degree for the normal work of this motor.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

fig. 3 is an enlarged schematic view of the structure at B in fig. 1 according to the present invention.

In the figure: 1. a motor housing; 2. a machine cabin; 3. a rectangular screen frame; 4. a dust screen; 5. installing a frame; 6. an extension plate; 7. a threaded hole; 8. a side plate; 9. a fixing member; 10. an output shaft; 11. a mounting frame; 12. ventilating fan blades; 13. a breathable net; 14. a buffer box; 15. a pressing plate; 16. an arc-shaped lower pressing plate; 17. and a roller.

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 work belong to the protection scope of the present invention.

In order to facilitate heat dissipation in the machine cabin 2 and improve the heat dissipation and cooling effects, as shown in fig. 1-3, the brushless dc motor includes a motor casing 1 having a machine cabin 2 therein and buffer boxes 14 symmetrically and fixedly installed at the top and bottom of one side of the motor casing 1, a mounting frame 11 is fixedly installed in the machine cabin 2, an output shaft 10 is rotatably installed in the mounting frame 11 (in specific implementation, a ball bearing is installed at a joint of the output shaft 10 and the mounting frame 11), a plurality of ventilating fan blades 12 installed in the machine cabin 2 are fixedly installed on an outer edge surface of the output shaft 10 in an annular array, benefiting from the arrangement of the output shaft 10, the mounting frame 11 and the ventilating fan blades 12, during the operation of the motor, the output shaft 10 rotates to drive the ventilating fan blades 12 to rotate, so that heat generated during the operation of the motor is discharged from the machine cabin 2 under the rotation of the ventilating fan blades 12, avoid overheating damage of components caused by overhigh internal heat in the working process, provide a certain degree of guarantee for normal work of the motor, a rectangular groove for connecting the machine cabin 2 and detachably mounting the rectangular net frame 3 is arranged in the middle of the upper end surface of the motor shell 1, a dust screen 4 for reducing dust entering the machine cabin 2 is fixedly mounted in the rectangular net frame 3 (in the specific implementation, a connecting piece for detachably mounting the dust screen and the motor shell 1 is arranged in the rectangular net frame 3, the connecting piece can be selected and used as a bolt), a through groove for connecting the machine cabin 2 and fixedly mounting the ventilating net 13 is arranged on one surface of the motor shell 1 far away from the buffer box 14, side plates 8 are fixedly mounted at the bottoms of two sides of the motor shell 1, a plurality of fixing pieces 9 for fixedly mounting the motor shell 1 are arranged in the side plates 8 at equal intervals (in the specific implementation, the fixing pieces 9 can be selected and used as a bolt), motor casing 1's both ends are all fixed and are provided with installing frame 5, and the both sides of two installing frames 5 are all constructed between two parties and are extended plate 6, and a plurality of screw holes 7 have been seted up to equidistance in the extended plate 6.

In order to reduce the tremor amplitude of the output shaft 10, as shown in fig. 1-3, springs are fixedly installed in two buffer boxes 14, opposite ends of the two springs are fixedly connected with limit plates, opposite sides of the two limit plates are fixedly connected with squeeze plates 15 penetrating out of the buffer boxes 14 in the middle, opposite ends of the two squeeze plates 15 are fixedly connected with arc-shaped lower press plates 16, inner edge surfaces of the arc-shaped lower press plates 16 are centrally and rotatably provided with rollers 17, one ends of the output shaft 10 extend out of the machine cabin 2, outer edge surfaces of the rollers 17 are in rolling abutting connection with outer edge surfaces of the output shaft 10, thanks to the arrangement of the buffer boxes 14, the squeeze plates 15, the arc-shaped lower press plates 16, the rollers 17, the springs and the limit plates, the limit plates can push the squeeze plates 15 to move under the elastic force of the springs, so as to drive the arc-shaped lower press plates 16 to move, and the rollers 17 are in rotating abutting connection with the outer edge surfaces of the output shaft 10, under long-time use, when the output shaft 10 rotates the in-process and appears the tremble, the spring can cushion, slows down the range of tremble, is favorable to auxiliary motor to carry out normal work, all sets up the cell body that supplies pivot normal running fit to install on the inner fringe face of two arc holding down plates 16 (during the concrete implementation, the pivot is provided with ball bearing with the junction of cell body), and gyro wheel 17 fixed mounting is on the outer fringe face of pivot to borrow by the pivot and rotate.

The working principle is as follows: when the brushless direct current motor is used, under the action of the elastic force of the spring, the limiting plate can push the extrusion plate 15 to move, so that the arc-shaped lower pressing plate 16 is driven to move, the roller 17 is enabled to rotate and abut against the outer edge surface of the output shaft 10, when the output shaft 10 rotates and shakes during long-time use, the spring can buffer and reduce the amplitude of the shaking, in the working process of the motor, the output shaft 10 rotates and further drives the ventilating fan blades 12 to rotate, so that heat generated in the working process of the motor is discharged from the machine cabin 2 under the rotation of the ventilating fan blades 12, in the rotating process of the ventilating fan blades 12, external cold air enters the machine cabin 2 through the dustproof net 4, the dustproof net 4 can filter dust in the external cold air, meanwhile, hot air in the machine cabin 2 is discharged through the ventilating net 13, and circulation of the cold air in the machine cabin 2 is realized, be favorable to providing better radiating effect, this brushless DC motor, rational in infrastructure, be convenient for slow down the tremble range of output shaft, and be convenient for dispel the heat, promote heat dissipation cooling effect, the practicality is strong.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A brushless direct current motor comprises a motor shell (1) internally provided with a motor cabin (2) and buffer boxes (14) symmetrically and fixedly arranged at the top and the bottom of one side of the motor shell (1);

the method is characterized in that: springs are fixedly arranged in the two buffering boxes (14), limiting plates are fixedly connected to opposite ends of the two springs, extruding plates (15) penetrating out of the buffering boxes (14) are fixedly connected to opposite sides of the two limiting plates in the middle, arc-shaped lower pressing plates (16) are fixedly connected to opposite ends of the two extruding plates (15), and idler wheels (17) are rotatably arranged on inner edge surfaces of the arc-shaped lower pressing plates (16) in the middle;

the aircraft cabin (2) internal fixation is provided with mounting bracket (11), the internal rotation of mounting bracket (11) is provided with output shaft (10), it has a plurality of set up in aircraft cabin (2) fan blades (12) of taking a breath to be annular array fixed mounting on the outer fringe face of output shaft (10).

2. A brushless dc motor according to claim 1, wherein: one end of the output shaft (10) extends out of the machine bin (2), and the outer edge surface of the roller (17) is in rolling contact with the outer edge surface of the output shaft (10).

3. A brushless dc motor according to claim 2, wherein: put through quick-witted storehouse (2) and supply rectangle screen frame (3) demountable installation's rectangular channel has been seted up between two parties to the up end of motor casing (1), fixed mounting has dust screen (4) that are used for reducing the dust and get into in quick-witted storehouse (2) in rectangle screen frame (3).

4. A brushless dc motor according to claim 3, wherein: the motor shell is characterized in that a through groove communicated with a machine cabin (2) and used for fixedly installing a ventilation net (13) is formed in one surface, far away from a buffer box (14), of the motor shell (1), side plates (8) are fixedly installed at the bottoms of two sides of the motor shell (1), and a plurality of fixing pieces (9) used for fixedly installing the motor shell (1) are arranged in the side plates (8) at equal intervals.

5. A brushless dc motor according to claim 2, wherein: the motor shell is characterized in that mounting frames (5) are fixedly arranged at two end portions of the motor shell (1), extending plates (6) are constructed in the two sides of the mounting frames (5) in the middle, and a plurality of threaded holes (7) are formed in the extending plates (6) at equal intervals.

6. A brushless dc motor according to claim 1, wherein: two all set up the cell body that supplies pivot normal running fit installation on the inner edge face of arc holding down plate (16), gyro wheel (17) fixed mounting is on the outer edge face of pivot to borrow by the pivot and rotate.