High-rotating-speed small motor with shell air guide opening structure

Abstract

The utility model belongs to a high-rotating-speed small-sized motor with a shell air guide port structure. The high-rotating-speed small-sized motor comprises a cylindrical motor shell, a motor stator, a motor rotor, heat dissipation fan blades and a motor cover, the motor stator is arranged in the cylindrical motor shell, and the cylindrical motor shell and the motor stator are combined in a non-contact nesting manner; the surface of the cylindrical motor shell is provided with an air guide port, the air guide port is provided with a fin, the fin bends towards the interior of the cylindrical motor shell, and the tail end of the fin clamps and fixes the motor rotor; a motor rotor is arranged on the inner side of the motor stator, and the motor stator and the motor rotor are combined in a non-contact nesting mode; the motor rotor comprises a rotor cell and a transmission shaft, the rotor cell is fixedly connected with the transmission shaft, and the upper half section of the transmission shaft penetrates through the top of the cylindrical motor shell; the lower half section of the transmission shaft is provided with heat dissipation fan blades; the motor cover is arranged at the bottom of the cylindrical motor shell, the lower half section of the transmission shaft penetrates through the motor cover, and the lower half section of the transmission shaft is rotationally connected with the motor cover.

Description

TECHNICAL FIELD

[0001] The utility model belongs to small motor technical field, concretely relates to a high -speed small motor with shell air -guide structure. BACKGROUND

[0002] High -speed small motor is a kind of small, high speed, power density big motor, is widely used in various need fast response and high -efficient power output scene.The working principle of high -speed small motor is based on electromagnetism principle.Current through winding produces magnetic field, rotor rotates under the action of magnetic field.Through improving power frequency or optimizing motor structure (such as using high quality magnetic material and optimized cooling system), can realize high -efficient operation.High -speed small motor by its efficient, compact and high -performance characteristics, in numerous fields has shown broad application prospect, is widely used in industrial automation, medical equipment, aerospace, consumer electronics, scientific research equipment and so on.

[0003] Because high -speed small motor is easy to appear rapid heating under long -time operation when running speed is big, power density is big, therefore the development trend of high -speed small motor is relatively definite, one of them is to develop advanced cooling technology, further improves motor efficiency and power density by realizing rapid cooling.At present, for the cooling scheme of high -speed small motor, mainly concentrates on developing high -performance, high -thermal conductivity material and other materials.High -speed small motor internal space is relatively compact, therefore, high -thermal conductivity material is usually used for the shell, and the air-cooled shell is used to dissipate heat, and the effect of this passive cooling is poor.

[0004] In order to fully utilize small motor internal space for active cooling, the utility model hopes system a kind of high -speed small motor with shell air -guide structure. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of high -speed small motor with shell air -guide structure to solve the problems presented in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of high -speed small motor with shell air -guide structure, including cylindrical motor shell, motor stator, motor rotor, heat dissipation fan blade and motor cover;

[0008] The motor stator is arranged in the inside of cylindrical motor shell, and the cylindrical motor shell and the motor stator are combined in a non-contact nesting manner;A plurality of air inlets are provided on the surface of the cylindrical motor shell, and a plurality of air inlets are provided with a warped sheet, and a plurality of warped sheets are bent simultaneously towards the inside of the cylindrical motor shell, and the ends of a plurality of warped sheets are clamped and fixed to the motor rotor;

[0009] The inner side of the motor stator is provided with a motor rotor, and the motor stator and the motor rotor are combined in a non-contact nesting mode to form a rotor-stator combination; the motor rotor comprises a rotor electric core and a transmission shaft, the rotor electric core and the transmission shaft are fixedly connected, and the upper half of the transmission shaft penetrates the top of the cylindrical motor shell;

[0010] The lower half of the transmission shaft is provided with a heat dissipation fan blade; the motor cover is arranged at the bottom of the cylindrical motor shell, the lower half of the transmission shaft penetrates the motor cover, and the lower half of the transmission shaft is rotationally connected with the motor cover.

[0011] As preferred, the plurality of air guide openings are evenly divided into a plurality of columnar air guide opening groups, and the plurality of air guide opening groups are evenly distributed in an annular array at the side wall of the cylindrical motor shell; corresponding to the positions of the plurality of air inlet opening groups, the outer side wall of the motor stator is provided with a plurality of air guide grooves, and the flaps are inwardly bent and embedded in the air guide grooves.

[0012] As preferred, the inside of the cylindrical motor shell is provided with a rotor support one, the transmission shaft penetrates the rotor support one, and the transmission shaft is rotationally connected with the rotor support one; the rotor support one is provided with a support bearing one.

[0013] As preferred, the inside of the motor cover is provided with a rotor support two, the transmission shaft sequentially penetrates the heat dissipation fan blade, the rotor support two and the motor cover; the rotor support two is provided with a support bearing two.

[0014] As preferred, the motor cover is provided with a heat dissipation grille.

[0015] As preferred, the top and the bottom of the motor rotor are both provided with a plurality of heat dissipation fins.

[0016] As preferred, the rotational connection position of the transmission shaft and the cylindrical motor shell is provided with a rotational bearing one, and the rotational connection position of the transmission shaft and the motor cover is provided with a rotational bearing two.

[0017] As preferred, the upper edge of the motor cover is provided with a rim ring, the outer diameter of the rim ring is equal to the inner diameter of the cylindrical motor shell, and the thickness of the rim ring is greater than or equal to the distance between the motor stator and the cylindrical motor shell.

[0018] As preferred, the connecting point between the flap and the air guide opening is located at the left side edge or the right side edge of the air guide opening.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] (1) The present invention provides a high-speed small motor with a shell air duct structure. The side wall of the cylindrical motor shell is provided with an air duct. Under the wind pull of the heat dissipation fan blades at the bottom of the motor, the air duct can be used as an air inlet, and the external airflow is introduced into the small motor. There is a gap between the motor stator and the cylindrical motor shell, which can be used as an airflow channel to guide the airflow to the top position of the cylindrical motor shell. There is a gap between the motor stator and the motor rotor, which guides the airflow through the stator-rotor assembly until the bottom position of the cylindrical motor shell, and then discharges it under the blasting of the heat dissipation fan blades.

[0021] (2) The present invention provides a high-speed small motor with a shell air vent structure. A flap is provided at the air vent of the cylindrical motor shell. All flaps bend inward at the same time to clamp and fix the motor stator. The flap is part of the cylindrical motor shell. The air vent is punched out on the side wall of the cylindrical motor shell. The air vent can be used as an air inlet. At the same time, the flap is further punched and bent to clamp and fix the motor stator. This design does not increase the overall diameter of the small motor, does not change the compact layout inside the small motor, and can realize the internal airflow and heat dissipation.

[0022] (3) The present invention provides a high-speed small motor with a shell air duct structure, wherein the heat dissipation fan blades are fixed to the transmission shaft and the heat dissipation fan blades rotate rapidly with the transmission shaft; inside the small motor, the heat dissipation fan blades blow air, and the gas near the heat dissipation fan blades is blown out, further driving the orderly flow of gas inside the small motor. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 This is an exploded view of the present invention;

[0026] Figure 4 This is a schematic diagram of the cylindrical motor housing of this utility model;

[0027] In the diagram: 1. Cylindrical motor housing; 2. Motor stator; 3. Motor rotor; 4. Cooling fan blades; 5. Motor cover; 6. Air vent; 7. Waist plate; 8. Guide groove; 9. Rotor cell; 10. Drive shaft; 11. Rotary bearing 1; 12. Rotor support 1; 13. Support bearing 1; 14. Edge ring; 15. Rotary bearing 2; 16. Rotor support 2; 17. Support bearing 2; 18. Cooling grille; 19. Cooling fins. Detailed Implementation

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application. It should be emphasized that, in the drawings of the present application, the wire groups of the motor stator are not shown in order to better reflect the integrity of the improved structure. The wire groups of the motor stator used in the present application are the same as those of conventional motor stators, and belong to the common technology known by those skilled in the art, rather than the unachievable technical solutions.

[0029] A high-speed small motor with a shell air inlet structure, comprising a cylindrical motor shell 1, a motor stator 2, a motor rotor 3, a heat dissipation fan blade 4 and a motor cover 5.

[0030] The motor stator 2 is arranged in the interior of the cylindrical motor shell 1, and the cylindrical motor shell 1 and the motor stator 2 are combined in a non-contact nesting mode. In order to enable the motor stator 2 to be fixed centrally in the interior of the cylindrical motor shell 1, twenty-four air inlets 6 are arranged at the side wall of the cylindrical motor shell 1, three air inlets 6 form a row, and are evenly distributed in a ring array at the side wall of the cylindrical motor shell 1. An upturned sheet 7 is arranged at each air inlet 6, the upturned sheet 7 is made of metal material and has good ductility and hardness, and belongs to part of the cylindrical motor shell 1. The complete cylindrical motor shell 1 is taken, a U-shaped punch is used to stamp the cylindrical motor shell 1, and the structure of the upturned sheet 7 is obtained. The motor stator 2 is centrally placed in the interior of the cylindrical motor shell 1, all the upturned sheets 7 are bent towards the interior of the cylindrical motor shell 1, and the end of the upturned sheet 7 clamps and fixes the motor rotor 3. In order to enhance the fixing effect of the upturned sheet 7, eight flow guide grooves 8 evenly distributed in a ring array are arranged at the outer side wall of the motor stator 2, and the upturned sheet 7 is bent inwardly and embedded in the flow guide groove 8. In order to prevent the motor stator 2 from rotating after being clamped by the upturned sheet 7, the connection between the upturned sheet 7 and the air inlet 6 is randomly located at the left edge or the right edge of the air inlet 6.

[0031] The inner side of the motor stator 2 is provided with a motor rotor 3, and the motor stator 2 and the motor rotor 3 are combined in a non-contact nested manner to form a rotor-stator combination. The motor rotor 3 comprises a rotor core 9 and a transmission shaft 10, and the rotor core 9 and the transmission shaft 10 are fixedly connected. The upper half of the transmission shaft 10 penetrates the top position of the cylindrical motor shell 1, and the transmission shaft 10 is rotatably connected with the cylindrical motor shell 1, and a rotating bearing one 11 is arranged at the rotating connection position of the transmission shaft 10 and the cylindrical motor shell 1. In order to enhance the rotating stability of the motor rotor 3, a rotor support one 12 is arranged in the inner side of the cylindrical motor shell 1, the transmission shaft 10 penetrates the rotor support one 12, the transmission shaft 10 is rotatably connected with the rotor support one 12, and a support bearing one 13 is arranged at the rotor support one 12. The motor cover 5 is arranged at the bottom of the cylindrical motor shell 1, and a flange ring 14 is arranged at the upper edge of the motor cover 5. The design of the flange ring 14 can greatly facilitate the installation of the motor cover 5; at the same time, the thickness of the flange ring 14 is slightly larger than the distance between the motor stator 2 and the cylindrical motor shell 1, and the existence of the flange ring 14 can block the gap between the motor stator 2 and the cylindrical motor shell 1, so that the airflow introduced by the air inlet 6 can only be guided out from the upper end of the motor stator 2. The lower half of the transmission shaft 10 penetrates the motor cover 5, and the lower half of the transmission shaft 10 is rotatably connected with the motor cover 5, and a rotating bearing two 15 is arranged at the connecting position of the transmission shaft 10 and the motor cover 5. In order to enhance the rotating stability of the motor rotor 3, a rotor support two 16 is arranged in the inner side of the motor cover 5, the transmission shaft 10 is rotatably connected with the rotor support two 16, and a support bearing two 17 is arranged at the rotor support two 16.

[0032] The lower half of the transmission shaft 10 is provided with a heat dissipation fan blade 4, and the two are fixedly connected. The heat dissipation fan blade 4 is located between the rotor-stator combination and the motor cover 5, and the heat dissipation fan blade 4 rotates with the transmission shaft 10. A heat dissipation grille 18 is arranged at the motor cover 5, the heat dissipation fan blade 4 blows air, and the airflow is guided out from the heat dissipation grille 18. After the rotor-stator combination is installed, the transmission shaft 10 penetrates the heat dissipation fan blade 4, the rotor support two 16 and the motor cover 5 in sequence. In the running process, the heat dissipation fan blade 4 rotates with the motor rotor 3, the heat dissipation fan blade 4 blows air, and the airflow is guided out from the heat dissipation grille 18. Under the wind power of the heat dissipation fan blade 4, the air inlet 6 can be used as an air inlet, and the external airflow is introduced into the small motor; the gap between the motor stator 2 and the cylindrical motor shell 1 can be used as an airflow channel to guide the airflow to the top position of the cylindrical motor shell 1; the gap between the motor stator 2 and the motor rotor 3 can guide the airflow to pass through the rotor-stator combination until the bottom position of the cylindrical motor shell 1, and then be further discharged under the blowing of the heat dissipation fan blade 4. In order to enhance the heat dissipation effect of the motor rotor 3, a plurality of heat dissipation fins 19 are arranged at the top and bottom of the motor rotor 3.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-speed small motor with a shell air vent structure, characterized in that: Includes a cylindrical motor housing, motor stator, motor rotor, cooling fan blades, and motor cover; The motor stator is disposed inside the cylindrical motor housing, and the cylindrical motor housing and the motor stator are combined in a non-contact nesting manner; the surface of the cylindrical motor housing is provided with several air guides, and the air guides are provided with flaps, and several flaps simultaneously bend into the cylindrical motor housing, and the ends of several flaps clamp and fix the motor rotor. The motor stator is provided with a motor rotor inside. The motor stator and motor rotor are combined in a non-contact nested manner to form a stator-rotor assembly. The motor rotor includes a rotor cell and a drive shaft. The rotor cell and drive shaft are fixedly connected. The upper half of the drive shaft penetrates the top of the cylindrical motor housing. The lower half of the drive shaft is provided with heat dissipation fan blades; the motor cover is located at the bottom of the cylindrical motor housing, the lower half of the drive shaft passes through the motor cover, and the lower half of the drive shaft is rotatably connected to the motor cover.

2. A high-speed small motor with a shell air vent structure according to claim 1, characterized in that: The plurality of air inlets are evenly divided into several rows of air inlet groups, and the plurality of air inlet groups are evenly distributed in a ring array on the side wall of the cylindrical motor housing; corresponding to the positions of the plurality of air inlet groups, the outer side wall of the motor stator is provided with several guide grooves, and the fins are bent inward and embedded in the guide grooves.

3. A high-speed small motor with a shell air vent structure according to claim 1, characterized in that: The cylindrical motor housing has a rotor support inside, and the drive shaft passes through the rotor support and is rotatably connected to the rotor support; a support bearing is provided at one point of the rotor support.

4. A high-speed small motor with a shell air vent structure according to claim 1, characterized in that: The motor cover has a rotor support second inside, and the transmission shaft passes through the heat dissipation fan blades, the rotor support second and the motor cover in sequence; the rotor support second is provided with a support bearing second.

5. A high-speed small motor with a shell air vent structure according to claim 1, characterized in that: The motor cover is equipped with a heat dissipation grille.

6. A high-speed small motor with a shell air vent structure according to claim 1, characterized in that: The motor rotor is provided with several heat dissipation fins at both the top and bottom.

7. A high-speed small motor with a shell air vent structure according to claim 1, characterized in that: A rotating bearing is provided at the rotatable connection between the drive shaft and the cylindrical motor housing; a rotating bearing is provided at the rotatable connection between the drive shaft and the motor cover.

8. A high-speed small motor with a shell air vent structure according to claim 1, characterized in that: The upper edge of the motor cover is provided with an edge ring, the outer diameter of which is equal to the inner diameter of the cylindrical motor housing; the thickness of which is greater than or equal to the distance between the motor stator and the cylindrical motor housing.

9. A high-speed small motor with a shell air vent structure according to claim 1, characterized in that: The connection point between the fin and the air vent is located at the left or right edge of the air vent.

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