CN204013079U - A motor for an industrial sewing machine - Google Patents

Abstract

The utility model discloses an industrial sewing machine's motor, including motor casing, motor casing in be equipped with stator module, stator module in be equipped with and to be in its pivoted rotor subassembly, the pivot of rotor subassembly on the cover be equipped with the motor flywheel, the motor flywheel with motor casing between be equipped with and make rotor subassembly and stator module and the communicating cooling duct of outside air. The utility model discloses simple structure, the radiating effect is good, motor long service life.

Description

A motor for an industrial sewing machine

【Technical field】

The utility model relates to an industrial sewing machine, in particular to a motor of the industrial sewing machine.

【Background technique】

At present, the motors of existing industrial sewing machines are generally closed structures, the rotor assembly and the stator assembly are enclosed in the motor housing, and the rotating shaft of the rotor assembly protrudes from the motor housing, and the motor flywheel is connected to the rotating shaft. Heat dissipation grooves are set on the outer wall of the housing. Although the heat dissipation grooves on the outer wall of the motor housing of this traditional industrial sewing machine motor increase the area in contact with the air, the heat dissipation has achieved a certain effect, but the heat dissipation effect of the motor is still not ideal. , The motor that has been running for a long time generates serious heat, and sometimes the motor is burned out and scrapped due to heat, which seriously affects the service life of the motor.

Therefore, the utility model arises at the historic moment.

【Content of utility model】

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a motor for industrial sewing machines with simple structure and good heat dissipation effect.

The utility model is achieved through the following technical solutions:

A motor for an industrial sewing machine, characterized in that it includes a motor housing, a stator assembly is provided in the motor housing, a rotor assembly that can rotate inside is provided in the stator assembly, and the rotor assembly is A motor flywheel is sheathed on the rotating shaft of the assembly, and a cooling air duct is provided between the motor flywheel and the motor housing to communicate the rotor assembly and the stator assembly with the outside air.

The motor of the industrial sewing machine as described above is characterized in that: the motor housing includes a stator assembly installation shell tightly fitted with the stator assembly, and the end of the stator assembly installation shell is provided with an annular ring facing the side of the motor flywheel. A cover, the diameter of the inner wall of the annular cover is larger than the diameter of the inner wall of the stator assembly installation shell.

The motor of the industrial sewing machine as mentioned above is characterized in that: the flywheel of the motor includes a flywheel disc, the middle part of the flywheel disc is provided with a raised conical coupling part, and the outside of the flywheel disc is provided with a The flywheel ring of the tapered shaft coupling part, the conical surface of the tapered shaft coupling part is provided with a plurality of balance reinforcing strips uniformly distributed around the circumference and extending towards the flywheel ring, the ends of the balance reinforcing strips and An airflow opening for airflow to pass through is provided between the inner walls of the flywheel ring when the flywheel of the motor rotates.

The motor of the industrial sewing machine as described above is characterized in that: the conical coupling portion includes a conical pedestal arranged in the middle of the flywheel disc, and a coupling hole is provided in the middle of the conical pedestal.

The motor of the industrial sewing machine as above is characterized in that: the diameter of the root circle of the conical pedestal is smaller than the diameter of the inner wall of the stator assembly installation shell.

The motor of the industrial sewing machine as mentioned above is characterized in that: the end of the flywheel ring protrudes into the annular cover.

The motor of the industrial sewing machine as above is characterized in that: the distance L that the end of the flywheel ring protrudes into the annular cover is 3 mm to 5 mm.

The motor of the industrial sewing machine as above is characterized in that: the housing bottom of the stator assembly mounting housing is provided with a plurality of heat dissipation through holes.

The motor of the industrial sewing machine as described above is characterized in that the flywheel of the motor is integrally formed.

Compared with the prior art, the utility model has the following advantages:

1. There is a cooling air duct between the motor flywheel and the motor housing of the utility model to communicate the rotor assembly and the stator assembly with the outside air. When the motor is running, the motor flywheel rotates rapidly, and the motor flywheel makes the cold air in the outside air It enters the inside of the motor from the cooling air duct, and dissipates heat to the rotor assembly and stator assembly, so the motor flywheel continuously sends in cold air during rotation, and at the same time brings out the hot air that has dissipated heat from the rotor assembly and stator assembly to circulate The air cooling method continuously dissipates heat to the motor, and the heat dissipation effect is good, which greatly prolongs the service life of the motor of the industrial sewing machine.

2. The conical surface of the conical coupling part of the utility model is provided with a plurality of balance reinforcing strips uniformly distributed around the circumference and extending to the flywheel ring. Between the end of the balance reinforcing strip and the inner wall of the flywheel ring, there is a motor flywheel The airflow port for the airflow to pass through when rotating, the balance reinforcement strips increase the strength of the motor flywheel, and the balance reinforcement strips are evenly distributed on the conical surface of the coupling part, so that the balance of the motor flywheel is strengthened. When the motor flywheel is running, the vibration It can be reduced, and there is an air flow port between the end of the balance reinforcement bar and the inner wall of the flywheel ring. When the motor flywheel rotates at high speed, part of the air flow passes through multiple interconnected air flow ports, without the obstruction of the balance reinforcement bar, reducing Vibration caused when airflow hits the balance stiffener.

3. The utility model is simple in structure, convenient to manufacture, and suitable for popularization.

【Description of drawings】

Fig. 1 is a perspective view of the utility model;

Fig. 2 is a sectional view of the utility model;

Fig. 3 is one of exploded views of the utility model;

Fig. 4 is the second exploded view of the utility model.

【Detailed ways】

Below in conjunction with accompanying drawing, the utility model will be further described:

A motor for an industrial sewing machine, comprising a motor housing 1, a stator assembly 2 is provided in the motor housing 1, a rotor assembly 3 capable of rotating inside is provided in the stator assembly 2, and the A motor flywheel 4 is sleeved on the rotating shaft 31 of the rotor assembly 3, and a cooling air duct is provided between the motor flywheel 4 and the motor housing 1 to communicate the rotor assembly 3 and the stator assembly 2 with the outside air. 5. When the motor is running, the motor flywheel 4 rotates rapidly, and the motor flywheel 4 makes the cold air in the external air enter the motor from the cooling air duct 5, and dissipates heat to the rotor assembly 3 and the stator assembly 2, so the motor flywheel 4 is rotating. The cold air is continuously sent in, and at the same time, the hot air that has dissipated heat from the rotor assembly 3 and stator assembly 2 is taken out, and the motor is continuously dissipated in the form of circulating air cooling. The heat dissipation effect is good, and the service life of the motor of the industrial sewing machine is greatly extended. .

The motor housing 1 includes a stator assembly installation shell 11 tightly fitted with the stator assembly 2. The end of the stator assembly installation shell 11 is provided with an annular cover 12 toward the side of the motor flywheel 4. The annular cover The inner wall diameter of 12 is larger than the inner wall diameter of the stator assembly mounting shell 11 .

The motor flywheel 4 includes a flywheel disc 41, the middle part of the flywheel disc 41 is provided with a raised conical coupling part 42, and the outer side of the flywheel disc 41 is provided with a conical coupling part 42 around the The flywheel ring 43, the conical surface of the tapered shaft coupling part 42 is provided with a plurality of balance reinforcement strips 44 uniformly distributed around the circumference and extending to the flywheel ring 43, and the ends of the balance reinforcement strips 44 are connected to the flywheel ring An airflow opening 45 for airflow to pass through is provided between the inner walls of the motor flywheel 4 when the motor flywheel 4 rotates. The balance reinforcing bar 44 increases the strength of the motor flywheel 4. In addition, the balance reinforcing bar 44 is evenly distributed on the conical surface of the tapered shaft coupling part 42, so that the balance of the motor flywheel 4 is strengthened. When the motor flywheel 4 is running, Vibration can be reduced, and an airflow port 45 is provided between the end of the balance reinforcing bar 44 and the inner wall of the flywheel ring 43. When the motor flywheel 4 rotates at a high speed, part of the airflow passes through a plurality of interconnected airflow ports 45 without balance. The blocking of the reinforcement bar 44 reduces the vibration caused when the airflow hits the balance reinforcement bar 44

The conical coupling portion 42 includes a conical pedestal 421 located in the middle of the flywheel disc 41 , and a coupling hole 422 is provided in the middle of the conical pedestal 421 . The rotating shaft 31 of the rotor assembly 3 passes through the coupling hole 422 and tightly fits, so that the rotor assembly 3 and the motor flywheel 4 are connected together.

The diameter of the root circle of the tapered pedestal 421 is smaller than the diameter of the inner wall of the stator assembly installation shell 11 . This can ensure the width of the cooling air passage 5, and when the motor flywheel 4 rotates at high speed, the amount of cold air entering is large, which can fully dissipate heat from the rotor assembly 3 and the stator assembly 2, and prolong the service life of the motor.

The end of the flywheel ring 43 protrudes into the annular cover 12 . When the motor flywheel 4 rotates at high speed, the cold air between the end of the flywheel ring 43 and the annular cover 12 applies a certain force to the center of the motor flywheel 4 on the part where the flywheel ring 43 extends into the annular cover 12, so that the motor flywheel 4 can be rotated more stable, because if the end of the flywheel ring 43 is located outside the end of the annular cover 12, when the motor flywheel 4 rotates at a high speed, the air flow will push the motor flywheel 4 outwards, causing the motor flywheel 4 to vibrate, which is not conducive to the normal operation of the motor. Work.

The distance L that the end of the flywheel ring 43 protrudes into the annular cover 12 is 3 mm to 5 mm.

The casing bottom of the stator assembly installation casing 11 is provided with a plurality of heat dissipation through holes 13 . The increase of the heat dissipation through holes 13 makes the heat dissipation effect of the motor better.

The motor flywheel 4 is integrally formed, with few parts, simple process and low manufacturing cost.

Claims (9)

1. A motor for an industrial sewing machine, characterized in that: it comprises a motor housing (1), the motor housing (1) is provided with a stator assembly (2), and the stator assembly (2) is A rotor assembly (3) capable of rotating inside is provided, and a motor flywheel (4) is sheathed on the rotating shaft (31) of the rotor assembly (3), and the motor flywheel (4) is connected with the motor flywheel (4). A cooling air channel (5) is provided between the casing (1) to communicate the rotor assembly (3) and the stator assembly (2) with the outside air. 2. The motor of an industrial sewing machine according to claim 1, characterized in that: the motor casing (1) includes a stator assembly installation shell (11) tightly fitted with the stator assembly (2), and the stator assembly (2) The end of the component installation shell (11) is provided with an annular cover (12) towards the side of the motor flywheel (4), and the inner wall diameter of the annular cover (12) is larger than the inner wall diameter of the stator component installation shell (11). 3. The motor of an industrial sewing machine according to claim 2, characterized in that: the motor flywheel (4) includes a flywheel disc (41), and the middle part of the flywheel disc (41) is provided with a raised conical Coupling part (42), the outer side of the flywheel disc (41) is provided with a flywheel ring (43) surrounding the conical coupling part (42), and the cone of the conical coupling part (42) There are a plurality of balance reinforcement strips (44) uniformly distributed on the surface and extending toward the flywheel ring (43), and a gap between the ends of the balance reinforcement strips (44) and the inner wall of the flywheel ring (43) is provided. The air flow port (45) for air flow to pass through when the motor flywheel (4) rotates. 4. The motor of an industrial sewing machine according to claim 3, characterized in that: said conical coupling portion (42) includes a conical platform (421) located in the middle of said flywheel disc (41), so A coupling hole (422) is provided in the middle of the above-mentioned tapered pedestal (421). 5. The motor of an industrial sewing machine according to claim 4, characterized in that: the diameter of the root circle of the conical pedestal (421) is smaller than the diameter of the inner wall of the stator assembly mounting shell (11). 6. The motor of an industrial sewing machine according to claim 3, characterized in that: the end of the flywheel ring (43) protrudes into the annular cover (12). 7. The motor of an industrial sewing machine according to claim 6, characterized in that: the distance L that the end of the flywheel ring (43) protrudes into the annular cover (12) is 3 mm to 5 mm. 8. The motor of an industrial sewing machine according to claim 2, characterized in that: the bottom of the stator assembly mounting case (11) is provided with a plurality of heat dissipation through holes (13). 9. The motor of an industrial sewing machine according to claim 3, characterized in that: the flywheel (4) of the motor is integrally formed.