TWM517957U - Heat dissipation device of three-phase induction external rotation type motor for treadmill - Google Patents

Description

Heat sink for three-phase induction external rotation motor for treadmill

The present invention is applied to the technical field of treadmills, and in particular to a heat dissipating device for a three-phase induction external rotation motor for a treadmill, wherein at least one heat dissipating component is in the form of a ring-shaped piece and is protruded to the two side covers. Radial fins, wherein the outer diameter of each of the heat dissipating members is closely matched with a middle frame, and the middle frame is annularly provided with a plurality of heat dissipation holes at an outer peripheral wall of the axial end, and each of the heat dissipation holes is respectively matched to one of the radial portions A number of flow paths between the fins for the purpose of effectively improving heat dissipation.

According to the conventional design, the conventional motor is an internal rotation type, and comprises: an inner rotor, the inner rotor is axially fixed with a plurality of steel sheets and axially fixed with an axial center, and the shaft ends are respectively sleeved An outer stator, the outer stator is fixed to an inner ring surface of the casing, and after the outer stator is sleeved with the inner rotor, an inertia flywheel and a belt pulley are fixed on the shaft center outside the casing. The belt pulley is coupled to the treadmill to output power, so that the track of the treadmill is rotated, thereby achieving the purpose of providing the user to run; however, the conventional structure is only agitating the motor because a fan is simply fixed on the shaft. The internal hot air is limited by the surrounding air. The heat dissipation effect is limited, especially when it is used for a long time. It is easy to make the fan twist and deform to reduce the heat dissipation effect, and the fan will be stuck. In severe cases, the internal high temperature may even occur. The inner rotor or the outer stator is burned Case.

Therefore, in view of the problems existing in the above-mentioned treadmills, how to develop an innovative structure with more ideal and practicality is really eagerly awaited by consumers, and it is also the goal and direction of relevant industry players to make efforts to develop breakthroughs.

The problem to solve the above problem is that the fan is simply fixed on the shaft and rotates only to stir the hot air inside the motor. The heat dissipation effect is limited by the surrounding slots, especially when the internal temperature is high for a long time, the fan is easily made. The twisting deformation reduces the heat dissipation effect, and the fan is stuck. In severe cases, the internal high temperature may even occur when the inner rotor or the outer stator of the motor is burnt.

In order to solve the above problems, the main object of the present invention is to provide a heat dissipating device for a three-phase induction externally-rotating motor for a treadmill, comprising: an inner stator, an axial center of the inner end of the inner stator; An outer rotor is a hollow cylinder and is provided with a plurality of perforations in the axial direction, and each of the perforations is respectively filled with a plurality of aluminum columns, and the aluminum columns are protruded from the axial ends of the outer rotor, and two Each of the aluminum posts is connected to each other to form a ring flange at each end, and an inner diameter of the outer rotor is sleeved on the inner peripheral wall of the inner stator; and the outer peripheral wall of the outer rotor is fixed to an inner diameter of a middle frame, The middle frame is a hollow cylinder and a side cover is respectively fixed at both ends of the axial direction, and each side cover is provided with a plurality of holes, and a bearing is disposed at a center of each of the side covers facing the middle frame, and then the shaft is disposed The two ends are disposed on the inner diameter of each of the bearings, and at least one heat dissipating component is fixed at one end of the outer rotor shaft and located between the side cover and the outer rotor; each of the heat dissipating elements is annular and The ring is centered on the heat dissipating component Radial fins are disposed, each of the radial fins facing the side cover and closely abutting the side cover, and the outer diameter of each of the heat dissipating components closely matches the middle frame, and the middle frame is radially outer peripheral wall at one end a plurality of heat dissipation holes are formed in the ring shape, and the heat dissipation holes respectively correspond to the plurality of flow channels between the radial fins at one end of the outer rotor; and by the above structure, when the inner stator is electrically conductive, the outer rotor is rotated The power is output, and the cold air flows into the motor from the side covers. At this time, the heat dissipating component rotates to discharge the internal hot air through the flow channels and the heat dissipation holes by centrifugal force, so as to effectively improve the heat dissipation.

The inner stator is axially disposed with a plurality of heat dissipation channels, and the heat dissipation channels are parallel to each other and arranged in a ring shape centering on the axis.

The other end of the middle frame is annularly disposed on the outer peripheral wall, and the plurality of heat dissipation holes are matched to the number of flow passages between the number of radial fins of the other end of the outer rotor and the other end of the outer rotor.

The outer peripheral wall of the shaft in each of the side covers is provided with a passage that communicates with the axially open end of the shaft center.

Wherein, one of the side covers protrudes outwardly from the center of the center to provide a power output portion.

Wherein, the two ends of the shaft are respectively provided with a damper element, and the damper element is annularly wrapped around the shaft center, and is respectively fixed in a positioning seat.

According to the prior art, at least one heat dissipating component is fixed between the two ends of the outer rotor and each of the side covers, and each of the flow channels between the radial fins is matched with the middle frame. The heat dissipation holes are arranged to facilitate the flow of cold air into the motor in each of the side covers, and the internal hot air is further rotated through the respective heat dissipation holes of each of the radiating fins of the heat dissipating component to achieve high efficiency. The purpose of air circulation cooling.

For the technology, means and efficacy of the novel, a preferred implementation In the following, the detailed description of the drawings and the drawings will enable the reviewing committee to have a more detailed understanding of the present invention and enable those skilled in the art to implement it. The following is only to explain the preferred embodiment. Rather than limiting the scope of the present invention, any changes or modifications of the present invention which are based on the structure of the present invention are intended to be within the scope of the present invention.

10 ‧ ‧ inner stator

11‧‧‧Axis

13‧‧‧heating channel

20‧‧‧Outer rotor

22‧‧‧Aluminum column

23‧‧‧ ring flange

30‧‧‧ middle frame

31‧‧‧ side cover

32‧‧‧ vents

40‧‧‧Heat components

41‧‧‧ Radial fins

42‧‧‧ flow path

110‧‧‧ channel

111‧‧‧Vibration element

112‧‧‧ Positioning Block

310‧‧‧ bearing

311‧‧‧Power Output Department

312‧‧‧ hole

Fig. 1 is a perspective view showing the appearance of a motor of a first embodiment of the present invention.

Fig. 2 is a perspective exploded view of the motor of the first embodiment of the present invention.

Fig. 3 is a perspective view showing the motor of the first embodiment of the present invention.

Fig. 4 is an axial perspective sectional view showing a motor portion of the first embodiment of the present invention.

Fig. 5 is a radial cross-sectional view of the motor of the first embodiment of the present invention.

Fig. 6 is a schematic view showing the flow of air when the motor of the first embodiment of the present invention is actuated.

Fig. 7 is a perspective view showing the appearance of a motor of a second embodiment of the present invention.

Fig. 8 is a schematic view showing the flow of air when the motor of the second embodiment of the present invention is actuated.

Figure 9 is a perspective view of the motor of the present invention installed in a treadmill.

Please refer to the first to ninth figures. The present invention provides a heat dissipation device for a three-phase induction external rotation motor for a treadmill, comprising: an inner stator 10, the inner ends of the inner stator 10 are axially An outer shaft 11 is protruded; an outer rotor 20 is a hollow cylinder and a plurality of perforations are arranged in the axial direction (not shown), and each of the perforations is respectively filled with a plurality of aluminum columns 22, each of the aluminum The column 22 is protruded from the axial ends of the outer rotor 20, and the aluminum posts 22 at both ends are connected to each other to form a ring flange 23 at each end. The outer diameter of the outer rotor 20 is sleeved on the outer peripheral wall of the inner stator 10; the outer peripheral wall of the outer rotor 20 is fixed to the inner diameter of a middle frame 30, which is a hollow cylinder and has axial ends. A side cover 31 is respectively fixed, and each of the side covers 31 is provided with a plurality of holes 312, and a bearing 310 is disposed at a center of each of the side covers 31 facing the middle frame 30, and the two ends of the shaft 11 are disposed. In the inner diameter of each of the bearings 310, at least one heat dissipating member 40 is fixed to one of the axial ends of the outer rotor 20, and is located between the side cover 31 and the outer rotor 20; each of the heat dissipating members 40 is annular and The plurality of radial fins 41 are protruded from the center of the ring, and the radial fins 41 face the side cover 31 and closely abut the side cover 31, and the outer diameter of each of the heat dissipating members 40 is tight. The middle frame 30 is further provided with a plurality of heat dissipation holes 32 annularly at one end of the radially outer peripheral wall, and the heat dissipation holes 32 are respectively matched between the radial fins 41 of one end of the outer rotor 20. The flow path 42; by the above structure, when the inner stator 10 is electrically conductive, the outer rotor 20 is rotated to output power while the cold air is The side cover 31 into the motor, when each of the heat dissipating member 40 is rotated a centrifugal force to the interior of each of the hot air through the cooling flow passage 42 and each exhaust hole 32, to achieve the purpose of improving the effective heat radiation of.

The inner stator 10 is axially disposed with a plurality of heat dissipation channels 13 , and the heat dissipation channels 13 are parallel to each other and arranged in a ring shape around the axis 11 .

The other end of the middle frame 30 is annularly disposed on the outer peripheral wall, and the plurality of heat dissipation holes 32 are correspondingly matched with the number of flow passages 42 between the number of radial fins 41 of the other heat dissipating component 40 at the other end of the outer rotor 20.

The outer peripheral wall of the shaft 11 in each of the side covers 31 is bored with a passage 110 that communicates with the axially open end of the shaft center 11.

One of the side covers 31 has a power output portion 311 protruding outward from the center of the circle.

A damping element 111 is disposed on each end of the shaft 11 , and the damping element 111 is annularly wrapped around the shaft 11 and fixed in a positioning seat 112 .

Referring to FIGS. 1 to 6, when the present invention is actuated, the conduction current is controlled to generate a magnetic field to the inner stator 10 to cause rotation of the outer rotor 20, wherein the outer diameter of the outer rotor 20 is fixed to the middle frame. Each of the side covers 31 is fixed to each of the two sides of the middle frame 30, and the bearing 310 is fixedly disposed at the center of each of the side covers 31. The inner diameter of each of the bearings 310 passes through the inner stator 10. When the outer rotor 20 and the middle frame 30 are rotated, one of the power output portions 311 of the side cover 31 can be synchronously rotated to continuously output power; it is particularly worth noting that the present invention Each of the heat dissipating elements 40 is fixed between the outer rotor 20 and each of the side covers 31 in the middle frame 30, and each of the radial fins 41 is protruded from each of the side covers 31, and each of the radial fins 41 Each of the flow passages 42 corresponds to each of the heat dissipation holes 32 of one or both ends of the middle frame 30; as shown in FIGS. 7 to 8, another embodiment of the present invention is characterized in that the inner stator 10 is The heat dissipating component 40 is fixed to the inner end of the heat dissipating channel 13 , and the heat dissipating channels 13 are mutually connected to each other. Parallel and arranged in a ring shape around the axis 11 , whereby the hot air of the other end flows through the respective heat dissipation holes 32; by the above structure, each of the flows between the radial fins 41 The channel 42 is matched with each of the heat dissipation holes 32 of one or both ends of the middle frame 30, which facilitates running cold air into the motor in each side cover 31 during operation, and flows through the heat dissipation channel 13 and the heat dissipation components. Each of the flow passages 42 of each of the radial fins 41 that rotates 40 discharges internal hot air from each of the heat dissipation holes 32, Only achieve the goal of improving air circulation cooling efficiency while extending the life of internal components and motors.

In summary, the present invention has many of the above-mentioned efficiencies and practical values, and can effectively improve the overall economic benefits. Therefore, the present invention is indeed an innovative structure, and the same or similar products are not seen in the same field technology. For public use, it should meet the requirements of the new patent, and apply in accordance with the law, and please give this new patent.

20‧‧‧Outer rotor

22‧‧‧Aluminum column

23‧‧‧ ring flange

30‧‧‧ middle frame

31‧‧‧ side cover

32‧‧‧ vents

40‧‧‧Heat components

41‧‧‧ Radial fins

311‧‧‧Power Output Department

312‧‧‧ hole

Claims (6)

A heat dissipating device for a three-phase induction external rotation motor for a treadmill includes: an inner stator, an inner shaft of the inner end of the inner stator at an axial center; an outer rotor, the outer rotor is a hollow cylinder and The axial annular ring is provided with a plurality of perforations, and each of the perforations is respectively filled with a plurality of aluminum columns, and the aluminum columns are protruded from the axial ends of the outer rotor, and the aluminum columns at both ends are connected to each other to form a ring at each end. a flange, and an inner diameter of the outer rotor is sleeved on the outer peripheral wall of the inner stator; further, the outer peripheral wall of the outer rotor is fixed to an inner diameter of a middle frame, the middle frame is a hollow cylinder and the axial ends are respectively fixed a side cover is provided, each of the side covers is provided with a plurality of holes, and a bearing is disposed at a center of each of the side covers facing the middle frame, and both ends of the shaft are respectively disposed in an inner diameter of each of the bearings, At least one heat dissipating component is fixed to one end of the outer rotor shaft and located between the side cover and the outer rotor; each of the heat dissipating components is annular and has a radial fin protruding from the heat dissipating component a sheet, each of the radial fins facing the side cover and closely abutting the side cover, and each of the same The outer diameter of the heat element is closely matched with the middle frame, and the middle frame has a plurality of heat dissipation holes annularly formed at one end of the radially outer peripheral wall, and the heat dissipation holes respectively correspond to the radial fins at one end of the outer rotor. According to the above structure, when the inner stator is electrically conductive, the outer rotor is rotated to output power, and cold air flows into the motor from the side covers, and the heat dissipating members rotate to centrifugally force the internal hot air. Each of the flow channels and each of the heat dissipation holes is discharged to achieve the purpose of effectively improving heat dissipation. The heat dissipation device of the three-phase induction external rotation motor of the treadmill according to claim 1, wherein the other end of the middle frame is annularly disposed on the outer peripheral wall, and the plurality of heat dissipation holes are matched to the other end of the outer rotor to add another heat dissipation. The number of elements between the number of radial fins. The heat dissipation device for a three-phase induction external rotation motor for a treadmill according to claim 2, wherein the inner stator axially passes through a plurality of heat dissipation channels, each of the heat dissipation channels being parallel to each other and centered on the axis Arranged in a ring shape. The heat sink of the three-phase induction external rotation motor of the treadmill according to claim 1, wherein the outer peripheral wall of the shaft in each of the side covers is provided with a passage that communicates with the axial open end of the shaft . The heat dissipation device for a three-phase induction external rotation motor of the treadmill according to claim 1, wherein one of the side covers protrudes outward from the center of the power output portion. The heat sink of the three-phase induction external rotation motor of the treadmill according to claim 1, wherein a damping element is disposed on each end of the shaft, the damping element is annularly wrapped around the shaft center, and They are respectively fixed in a positioning seat.