CN221177473U - Internal heat dissipation type DC brushless motor - Google Patents

Abstract

The utility model discloses an internal heat dissipation type direct current brushless motor, which comprises a protecting device for supporting, wherein a motor cover plate for limiting is fixedly clamped at the center of the front end face of the protecting device. According to the utility model, the transmission device and the heat dissipation device are arranged, when the heat dissipation operation is carried out inside the heat dissipation shell, the transmission guide shaft can synchronously drive the four groups of fixed gears through the transmission gears, so that the four groups of fixed gears and the transmission gears synchronously rotate, and the heat dissipation blade plate inside the transmission gears can synchronously rotate with the heat dissipation fan outside the fixed guide rod, so that the heat dissipation inside the heat dissipation shell is synchronously carried out, and the heat dissipation efficiency during the operation of the heat dissipation shell is effectively improved.

Description

Internal heat dissipation type DC brushless motor

Technical Field

The utility model relates to the technical field of brushless motor equipment, in particular to an internal heat dissipation type direct current brushless motor.

Background

The brushless direct current motor consists of a motor main body and a driver, is a typical electromechanical integrated product, and has very wide application, such as automobiles, tools, industrial control, automation, aerospace and the like.

The publication number is: CN213027764U, the disclosed utility model patent, a power generation heat dissipation formula DC brushless motor, which comprises a housin, install the protecting crust through the bolt on the outer wall of one side of casing, and the one end that the protecting crust was kept away from to the casing is installed the fixed plate through the bolt, be connected with the pivot through the bearing rotation between the outer wall of one side that protecting crust and fixed plate are relative, the external key of pivot is connected with the rotor assembly, bond on the side inner wall of casing has stator core, and stator core's inside winding has stator winding, the one end integrated into one piece of pivot has first step and second step, and the external key of second step is connected with the flabellum, open on the inner wall of one side of protecting crust has the exhaust hole. The rotating shaft can drive the fan blades to rotate simultaneously in the rotating process of the rotating shaft, and the fan blades drive air in the brushless direct current motor shell to circulate, so that high-temperature gas in the brushless direct current motor is discharged through the exhaust holes, and external low-temperature gas enters the brushless direct current motor through the air inlet holes to cool the motor.

Although the brushless dc motor can perform a heat radiation operation, it performs only a rear heat radiation, which reduces a heat radiation efficiency when the middle stator and the rotor are operated, and thus reduces a heat radiation efficiency of the whole motor, so that an internal heat radiation type brushless dc motor is urgently required to solve the above-mentioned problems.

Disclosure of utility model

The present utility model is directed to an internal heat dissipation type dc brushless motor, so as to solve the above-mentioned problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the internal heat dissipation type direct current brushless motor comprises a protecting device for supporting, a motor cover plate for limiting is fixedly clamped at the center of the front end face of the protecting device,

The transmission device is rotationally clamped at the center of the inner end surface of the protection device;

the four groups of heat dissipation devices are rotatably clamped on the inner end surface of the protection device, and are in meshed connection with the transmission device;

the motor rear cover is fixedly clamped on the rear end face of the protection device and is provided with a fixing clamping groove on the inner end face of the motor rear cover.

Preferably, the protection device comprises a heat dissipation shell, four groups of heat conduction clapboards are arranged on the outer end face of the heat dissipation shell at equal intervals, four groups of limit rotating grooves are arranged on the inner end face of the heat dissipation shell at equal intervals, and a supporting bottom plate is arranged on the center of the rear end face of the heat dissipation shell.

Preferably, the transmission device comprises a transmission guide shaft, radiating blades are equidistantly arranged at the position, close to the end, of the side end face of the transmission guide shaft, and a transmission gear is fixedly arranged on the outer end face of each radiating blade.

Preferably, the heat dissipating device comprises a fixed gear, a fixed guide rod is fixedly arranged at the center of the upper end face of the fixed gear, and a heat dissipating fan is arranged on the outer end face of the fixed guide rod at equal intervals.

Preferably, the fixed guide rod is clamped in the heat dissipation shell through the limiting rotating groove in a rotating manner, the heat dissipation fan is not contacted with the inner wall of the limiting rotating groove, and the limiting rotating groove can provide a sufficient limiting basis for high-speed rotation of the fixed guide rod and the heat dissipation fan.

Preferably, four groups of fixed gears are meshed with the transmission gear, the heat dissipation holes penetrating through the inside of the limit rotating grooves are formed in the heat dissipation shell and the heat conduction partition plate, the heat dissipation holes are annular, and the heat dissipation shell, the heat conduction partition plate and the limit rotating grooves are penetrated, so that heat dissipation efficiency can be improved.

Compared with the prior art, the utility model has the following beneficial effects:

1. According to the utility model, the transmission device and the heat dissipation device are arranged, when the heat dissipation operation is carried out inside the heat dissipation shell, the transmission guide shaft can synchronously drive the four groups of fixed gears through the transmission gears, so that the four groups of fixed gears and the transmission gears synchronously rotate, and the heat dissipation blade plate inside the transmission gears can synchronously rotate with the heat dissipation fan outside the fixed guide rod, so that the heat dissipation inside the heat dissipation shell is synchronously carried out, and the heat dissipation efficiency during the operation of the heat dissipation shell is effectively improved.

Drawings

FIG. 1 is a split view of a body of the present utility model;

FIG. 2 is a schematic structural view of the main body of the present utility model;

FIG. 3 is a schematic view of the structure of the protection device of the present utility model;

FIG. 4 is a schematic diagram of a transmission of the present utility model;

fig. 5 is a schematic structural diagram of a heat dissipating device according to the present utility model.

In the figure: 1-protector, 2-transmission, 3-motor cover plate, 4-heat abstractor, 5-motor back lid, 6-fixed draw-in groove, 11-heat dissipation casing, 12-heat conduction baffle, 13-spacing change groove, 14-supporting baseplate, 21-transmission guide shaft, 22-heat dissipation leaf board, 23-drive gear, 41-fixed gear, 42-fixed guide arm, 43-radiator fan.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, an embodiment of the present utility model is provided: the internal heat dissipation type direct current brushless motor comprises a protecting device 1 for supporting, a motor cover plate 3 for limiting is fixedly clamped at the center of the front end surface of the protecting device 1,

The transmission device 2 is rotationally clamped at the center of the inner end surface of the protection device 1;

The four groups of heat dissipation devices 4 are arranged in total, the four groups of heat dissipation devices 4 are rotationally clamped on the inner end surface of the protection device 1, and the four groups of heat dissipation devices 4 are in meshed connection with the transmission device 2;

The motor back cover 5, the fixed joint in the rear end face of protector 1 of motor back cover 5, and be located the interior terminal surface of motor back cover 5 and seted up fixed draw-in groove 6.

The protection device 1 comprises a heat dissipation shell 11, four groups of heat conduction clapboards 12 are arranged on the outer end face of the heat dissipation shell 11 at equal intervals, four groups of limit rotating grooves 13 are arranged on the inner end face of the heat dissipation shell 11 at equal intervals, and a supporting bottom plate 14 is arranged on the center of the rear end face of the heat dissipation shell 11.

The transmission device 2 comprises a transmission guide shaft 21, radiating blades 22 are equidistantly arranged at the position, close to the end, of the side end face of the transmission guide shaft 21, and a transmission gear 23 is fixedly arranged on the outer end face of each radiating blade 22.

The heat dissipating device 4 comprises a fixed gear 41, a fixed guide rod 42 is fixedly arranged at the center of the upper end surface of the fixed gear 41, and a heat dissipating fan 43 is equidistantly arranged on the outer end surface of the fixed guide rod 42.

The fixed guide rod 42 is further rotationally clamped inside the heat dissipation shell 11 through the limiting rotary groove 13, the heat dissipation fan 43 is not contacted with the inner wall of the limiting rotary groove 13, and the limiting rotary groove 13 can provide a sufficient limiting foundation for high-speed rotation of the fixed guide rod 42 and the heat dissipation fan 43.

The four groups of fixed gears 41 are engaged with the transmission gear 23, and the heat dissipation holes penetrating through the heat dissipation shell 11 and the heat conduction partition plate 12 to the inside of the limit rotating groove 13 are formed in the heat dissipation shell, are annular and penetrate through the heat dissipation shell 11, the heat conduction partition plate 12 and the limit rotating groove 13, so that heat dissipation efficiency can be improved.

Working principle: when radiating, the transmission guide shaft 21 rotates at a high speed under the cooperation of the external stator and the rotor, at this moment, the transmission guide shaft 21 can drive the transmission gear 23 and the radiating blade 22 to rotate, the transmission gear 23 can synchronously drive the four groups of fixed gears 41 to rotate, the radiating blade 22 can absorb and guide out the heat inside the motor rapidly through the supporting bottom plate 14, and meanwhile, the four groups of fixed gears 41 can further cool and radiate the heat inside the motor through the cooling fan 43 and the cooling hole, so that the running stability of the motor is improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an interior heat dissipation formula DC brushless motor, including protector (1) that are used for supporting, the fixed joint in preceding terminal surface center department of protector (1) has motor apron (3) that are used for spacing, its characterized in that:

The transmission device (2) is rotationally clamped at the center of the inner end surface of the protection device (1);

The heat dissipation devices (4) are arranged in four groups, the four groups of heat dissipation devices (4) are rotationally clamped on the inner end face of the protection device (1), and the four groups of heat dissipation devices (4) are in meshed connection with the transmission device (2);

The motor rear cover (5), motor rear cover (5) fixed joint is in the rear end face of protector (1), and be located fixed draw-in groove (6) have been seted up to the interior terminal surface of motor rear cover (5).

2. The internal heat dissipation type dc brushless motor as claimed in claim 1, wherein: the protection device (1) comprises a heat dissipation shell (11), four groups of heat conduction clapboards (12) are arranged on the outer end face equidistance of the heat dissipation shell (11), four groups of limit rotating grooves (13) are arranged on the inner end face equidistance of the heat dissipation shell (11), and a supporting bottom plate (14) is arranged on the center of the rear end face of the heat dissipation shell (11).

3. The internal heat dissipation type dc brushless motor as claimed in claim 2, wherein: the transmission device (2) comprises a transmission guide shaft (21), radiating blades (22) are equidistantly arranged at the position, close to the end, of the side end face of the transmission guide shaft (21), and a transmission gear (23) is fixedly arranged on the outer end face of each radiating blade (22).

4. An internal heat sink type dc brushless motor as claimed in claim 3, wherein: the heat dissipation device (4) comprises a fixed gear (41), a fixed guide rod (42) is fixedly arranged at the center of the upper end face of the fixed gear (41), and heat dissipation fans (43) are arranged on the outer end face of the fixed guide rod (42) at equal intervals.

5. The internal heat sink type dc brushless motor as claimed in claim 4, wherein: the fixed guide rod (42) is rotationally clamped in the heat dissipation shell (11) through the limit rotating groove (13), and the heat dissipation fan (43) is not contacted with the inner wall of the limit rotating groove (13).

6. The internal heat sink type dc brushless motor as claimed in claim 4, wherein: four groups of fixed gears (41) are meshed with the transmission gears (23).