AU2021261979A1 - Waterproof motor - Google Patents

Abstract

] A waterproof motor including a casing, a stator, a waterproof glue layer, a rotor, and an actuator. The casing has a front cover, an inner ring surface, and a rear cover. The stator is disposed on the rear cover and adjacent to the inner ring surface. The circuit board and the stator are coated by the waterproof glue layer and the waterproof glue layer is sealed on the inner ring surface and the rear cover. The rotor is rotatably disposed in the stator and has a gap. The actuator is disposed on the casing and coupled to the stator. The actuator provides electric current to the stator, and the rotor is adapted to be rotated relative to the stator. 170 110 E 113 150(152)C 100 160 FIG. 1A

Description

110

E

113

150(152)C 100 160

FIG. 1A

[ Title] WATERPROOF MOTOR

[Technical Field]

[0001] The present invention relates to a motor, and particularly

relates to a waterproof motor with multiple protections.

[ Description of Related Art]

[0002] The motor is the most common driving device in the

industry. Its operating principle is to pass current through the wound

coil, so that the coil generates magnetic force and rotates in the

magnetic field, thereby driving the rotor to rotate relative to the

stator. The rotor can be connected to the fan blades. And directly

drive the steering or through the power transmission of the gear set

to drive a specific structure. Since the motor is installed on the roof

as a pumping motor or suspended on a pool for injecting oxygen, in

the aforementioned environment, the water vapor formed by rain and

pool water can easily enter the interior of the motor, causing power

trips, short circuits, and current leakage.

[0003] In order to prevent water vapor from affecting the

performance and safety of the motor, the current solution is to apply

grease between the bearing and the rotor to achieve a waterproof

effect. However, the existing oil seal method still cannot completely

I isolate the effect of water vapor.

[ SUMMARY]

[0004] The disclosure provides a waterproof motor has multiple

protections to prevent water vapor from entering and causing power

trips, short circuits, and current leakage, thereby increasing the

scope of use of the waterproof motor.

[0005] A waterproof motor, including: a housing with a front cover,

an inner ring surface and a back cover; a stator is arranged on the

back cover of the casing and adjacent to the inner ring surface; a

waterproof glue layer covering the stator and sealing on the inner

ring surface and the back cover; a rotor, rotatably arranged in the

stator with a gap; a driver, configured in the casing and coupled to

the stator; and a wireless module configured on the driver and

coupled to the stator for receiving wireless signals,wherein, the

driver provides current to the stator, and the rotor is suitable for

rotating relative to the stator.

[0006] In an embodiment of the disclosure, wherein the stator

includes at least one coil group and surrounds the inner ring surface

to form a ring structure, the stator has a turning space for

accommodating the rotor.

[0007] In an embodiment of the disclosure, wherein the rotor includes a steering wheel, a rotating shaft, and a plurality of magnetic parts, the steering wheel is disposed in the steering space of the stator, the rotating shaft penetrates and is clamped to the steering wheel, outside the cover and the back cover, a plurality of magnetic parts are arranged around the outer side of the steering wheel and spaced apart from the at least one coil group.

[0008] In an embodiment of the disclosure, further includes two

waterproof collars, the rotating shaft has two clamping grooves, the

two waterproof collars are respectively clamped in the two clamping

grooves and connected with the rotating shaft as a whole, and the

rotor synchronously drives the waterproofing collars to turn relative

to the casing.

[0009] In an embodiment of the disclosure, further includes two

oil seal assemblies and two waterproof collars, the two oil seal

assemblies are respectively arranged in the front cover and the rear

cover and sleeved on both ends of the rotor, and the two waterproof

collars are sleeved on both ends of the rotor.

[0010] In an embodiment of the disclosure, wherein each of the oil

seal components includes an oil seal ring and a seal ring, the two oil

seal rings abut against the inner sides of the front cover and the rear

cover respectively, and one of the seal rings is disposed in one of the

recessed holes of the oil seal ring, closely fitted to the front cover,

and the other sealing ring is arranged in the recess of the other oil seal ring and tightly fitted to the rear cover.

[0011] In an embodiment of the disclosure, wherein each of the oil

seal components includes an oil seal and a lubricating layer. The two

oil seals are ringed on both ends of the rotor and are spaced apart

from the two oil seal rings, the two lubrication layers are

respectively filled in the two oil seal rings and the two oil seals. In

between, two seals are respectively tightly attached to the two inner

openings of the front cover and the back cover, and the two

waterproof collars are respectively tightly attached to the two outer

openings of the front cover and the back cover, so that the

lubricating layers and the oil seals are respectively restricted in the

front cover and the rear cover.

[0012] In an embodiment of the disclosure, further includes two

bearings are respectively arranged in the two grooves of the casing

and sleeved on the outer wall surface of the rotating shaft to prevent

vibration of the rotating shaft during the pivoting process.

[0013] In an embodiment of the disclosure, wherein the casing is

provided with two supporting seats which are connected to the outer

ring surface of the casing and are arranged symmetrically with each

other.

[0014] In an embodiment of the disclosure, further includes a

wireless module is configured on the driver and coupled to the stator to receive wireless signals.

[0015] Based on the above, the waterproof motor of the present

invention has a waterproof rubber layer and two waterproof collars.

The waterproof rubber layer is formed in the casing through a

specific manufacturing process, and the waterproof rubber layer

completely covers the stator and the circuit board. The two

waterproof collars are arranged at the rotor position. On the two ends

outside the case. Two waterproof collars can be used as the first

protection to prevent moisture in the environment from infiltrating

from the gap between the rotor and the casing. When water

penetrates into the casing, the waterproof rubber layer is used as the

second protection to avoid the stator and the casing. The circuit

board is exposed to moisture, which may cause power trips, short

circuits, and current leakage.

[0016] Furthermore, the waterproof adhesive layer covers the

stator and the circuit board, which can increase the insulation and

waterproof effect in the casing. Therefore, the waterproof motor of

the present invention is suitable for working environments with high

moisture content.

[ BRIEF DESCRIPTION OF THE DRAWINGS]

[0017]

FIG. 1A is a three-dimensional schematic diagram of a

waterproof motor according to an embodiment of the present

invention.

Fig. 1B is an exploded schematic view of components of the

waterproof motor of Fig. 1A.

Fig. IC is a schematic plan view of the waterproof motor of Fig.

1A with the front cover removed.

Fig. 2A is a schematic cross-sectional view of the waterproof

motor of Fig. 1A.

FIG. 2B is a partially enlarged schematic diagram of the

waterproof motor of FIG. 2A.

[ DESCRIPTION OF THE EMBODIMENTS]

[0018] FIG. 1A is a three-dimensional schematic diagram of a

waterproof motor according to an embodiment of the present

invention. Fig. 1B is an exploded schematic view of components of

the waterproof motor of Fig. 1A. Fig. IC is a schematic plan view of

the waterproof motor of Fig. 1A with the front cover removed. Fig.

2A is a schematic cross-sectional view of the waterproof motor of

Fig. 1A. FIG. 2B is a partially enlarged schematic diagram of the

waterproof motor of FIG. 2A.

[0019] Referring to FIG. 1A, the waterproof motor 100 of the present invention is, for example, an aerator used in a breeding pond.

In short, the function of the aerator is to quickly transfer the

"oxygen" in the air to the breeding water, increase the amount of

dissolved oxygen in the water and promote the flow of the water,

thereby improving the water quality conditions and increasing the

survival rate of the breeding objects. And the growth rate, and then

achieve the purpose of increasing the production of aquaculture.

[0020] Referring to FIGS. 1A, 1B and 2A, the waterproof motor

100 of the present invention includes a housing 110, a stator 120, a

circuit board 130, a waterproof adhesive layer 140, a rotor 150, and

two waterproof collars 160 And a drive 170.

[0021] The casing 110 has a front cover 111, an inner ring is, and a

rear cover 112. the front cover 111 is detachably disposed at the front

end of the casing 110, and the rear cover 112 is integrally formed at

the rear end of the casing 110, and together form an internal space as.

The stator 120 is disposed on the back cover 112 of the casing 110

and is adjacent to the inner ring surface is. In detail, the stator 120

includes a plurality of coil groups 121 that are surrounded by the

inner ring surface is to form a ring structure, and the center of the

stator 120 has a turn to space rs. In other embodiments, the stator can

also be surrounded by a single coil group.

[0022] Referring to FIGS. IC and 2A, the circuit board 130 is

connected to the stator 120 and electrically coupled to each other through wires or welding. In other embodiments, wires are used to replace the circuit board. The waterproof adhesive layer 140 is disposed in the inner space AS of the casing 110. The waterproof adhesive layer 140 covers the circuit board 130 and the stator 120 and is sealed on the inner ring surface IS and the back cover 112, thereby forming insulation between the circuit board 130 and the stator 120 The protective layer.

[0023] The rotor 150 is rotatably arranged in the steering space RS

of the stator 120 with a gap GP. Two waterproof collars 160 are

sleeved on both ends of the rotor 150 to prevent moisture from

penetrating from the front cover 111 or the rear cover 112 of the

casing 110.

[0024] Referring to FIG. 1B, the rotor 150 includes a steering

wheel 151, a rotating shaft 152, and a plurality of magnetic parts 153.

The steering wheel 151 is disposed in the steering space RS of the

stator 120, and the rotating shaft 152 penetrates and is clamped to the

steering wheel 151. Therefore, the steering wheel 151 and the

rotating shaft 152 are connected as a whole and are suitable for

pivoting along an axial direction AD. The two ends E of the rotating

shaft 152 respectively protrude outside the front cover 111 and the

rear cover 112. Furthermore, the rotating shaft 152 has two clamping

slots FG.

[0025] The two waterproof collars 160 are respectively clamped in the two clamping grooves FG and connected with the rotating shaft

152 as a whole. The plurality of magnetic elements 153 are arranged

around the outer side OS of the steering wheel 151 and are spaced

apart from the plurality of coil groups 121. In this embodiment, the

magnetic element is, for example, a permanent magnet or an

electromagnet.

[0026] With reference to FIGS. 1A and IC, the driver 170 is

disposed above the casing 110 and is coupled to the circuit board 130

to provide current. In addition, the waterproof adhesive layer 140 has

a plurality of reserved holes H for To accommodate the wires, the

circuit board 130 is suitable for being coupled to the driver 170

through the wires. In short, when the current supplied by the driver

170 flows into each coil group 121 after being rectified by the circuit

board 130, each coil group 121 generates a magnetic field, which

interacts with the magnetic fields of the plurality of magnetic parts

153 of the rotor 150 to generate power, thereby driving The rotor 150

rotates relative to the stator 120 and the rotating shaft 152 of the

rotor 150 synchronously drives the two waterproof collars 160 to

rotate relative to the casing 110.

[0027] In addition, the driver rectifies the external three-phase

power or mains power through a rectifier circuit to obtain the

corresponding direct current. The rectified three-phase power or city

power is then transmitted to the frequency converter for frequency conversion, and finally used to drive the stator and the rotor to produce relative motion.

[0028] In an embodiment of the present invention, it further

includes two oil seal assemblies 180, respectively disposed in the

front cover 111 and the rear cover 112 and sleeved on both ends of

the rotating shaft 152 of the rotor 150, wherein the oil seal assembly

180 is used to seal the gap between the rotating shaft 152 and the

front cover 111 and the rear cover 112 prevents moisture from

entering the casing 110 from the gap.

[0029] With reference to FIGS. 2A and 2B, in particular, each oil

seal assembly 180 includes an oil seal ring 181, a seal ring 182, an

oil seal 183, and a lubricating layer 184.

[0030] The two oil seal rings 181 abut against the inner sides S Iof

the front cover 111 and the rear cover 112, respectively, and are

spaced apart from the rotating shaft 152. One of the seal rings 182 is

disposed in the recessed hole CH of one of the oil seal rings 181 and

is tightly attached to the front cover 111, and the other seal ring 182

is disposed in the recessed hole CH of the other oil seal ring 181 and

is tightly attached to the rear cover 112.

[0031] Two oil seals 183 are arranged around the two ends of the

rotating shaft 152 of the rotor 150 and are spaced apart from the two

oil seal rings 181, wherein the oil seals 183 are used to prevent external moisture from entering the casing 110 to achieve a hermetic effect. Two lubricating layers 184 are respectively filled between the two oil seal rings 181 and the two oil seals 183, wherein the lubricating layer 184 uses, for example, lubricating oil to improve the smoothness of rotation of the rotating shaft 152 and the oil seal

183 relative to the oil seal ring 181.

[0032] In addition, the two seals SP are respectively tightly fitted

to the two inner openings of the front cover 111 and the rear cover

112, and the two waterproof collars 160 are respectively tightly

fitted to the two outer openings of the front cover 111 and the rear

cover 112 to lubricate the two. The layer 184 and the two oil seals

183 are respectively confined in the front cover 111 and the rear

cover 112, which can further improve the effectiveness of sealing

and waterproofing.

[0033] The waterproof motor 100 includes two bearings 190

respectively disposed in the two grooves CG of the casing 110 and

sleeved on the outer wall surface of the rotating shaft 152. The

rotating shaft 152 is adapted to pivot relative to the two bearings 190

and the two bearings 190 are used for pivoting. To prevent excessive

vibration of the rotating shaft 152 during the pivoting process, so as

to improve the operational stability of the rotor 150.

[0034] Further, the casing 110 has two supporting seats 113

connected to the outer ring surface of the casing 110 and arranged symmetrically with each other. The two supporting seats 113 can be placed or locked on a plane to ensure that the waterproof motor 100 is in place. Stability in operation.

[0035] Furthermore, the waterproof motor 100 includes a wireless

module (not shown in the figure), which is disposed in the driver 170

and coupled to the stator 120 for receiving wireless signals. Through

wireless control, the magnitude or frequency of the input current of

the driver 170 can be remotely controlled to achieve variable speed

control, which can replace the existing built-in inverter or wired

control, which can greatly improve the convenience of control. In

addition, the speed and timing functions of the waterproof motor can

also achieve the purpose of saving electricity.

[0036] The following supplements the production process of the

waterproof glue layer, preheat the molding jig and place it in the

casing 110, and then pour the molten waterproof glue layer into the

casing, and fill the machine along the molding jig. The remaining

space of the shell is used to cover the circuit board and the stator,

and then a vacuuming step is performed to destroy the air bubbles

caused during the glue filling process to avoid the pores after curing

to cause insulation failure, and then the high temperature curing step

is carried out, and the high temperature heating is used to make the

waterproof adhesive layer From the molten state to the solid state,

finally the molding jig is removed to complete the production of the waterproof adhesive layer.

[0037] In summary, the waterproof motor of the present invention

has a waterproof rubber layer and two waterproof collars. The

waterproof rubber layer is formed in the casing through a specific

manufacturing process, and the waterproof rubber layer completely

covers the stator and the circuit board. Two waterproof collars are

arranged at the two ends of the rotor located outside the casing. Two

waterproof collars can be used as the first protection to prevent

moisture in the environment from infiltrating from the gap between

the rotor and the casing. When water penetrates into the casing, the

waterproof rubber layer is used as the second protection to avoid the

stator and the casing. The circuit board is exposed to moisture, which

may cause power trips, short circuits, and current leakage.

[0038] Further, the waterproof adhesive layer covers the stator and

the circuit board, which can increase the insulation and waterproof

effect in the casing, and allow the waterproof motor to continue to

operate without damage when the internal water enters the state.

Therefore, the waterproof motor of the present invention It is

suitable for working environment with high moisture content.

Claims (9)

WHAT IS CLAIMED IS:

1. A waterproof motor, including:

a housing with a front cover, an inner ring surface and a back

cover;

a stator is arranged on the back cover of the casing and adjacent

to the inner ring surface;

a waterproof glue layer covering the stator and sealing on the

inner ring surface and the back cover;

a rotor, rotatably arranged in the stator with a gap;

a driver, configured in the casing and coupled to the stator; and

a wireless module configured on the driver and coupled to the

stator for receiving wireless signals,

wherein, the driver provides current to the stator, and the rotor is

suitable for rotating relative to the stator.

2. The waterproof motor according to claim 1, wherein the stator

includes at least one coil group and surrounds the inner ring surface

to form a ring structure, the stator has a turning space for

accommodating the rotor.

3.The waterproof motor according to claim 2, wherein the rotor

includes a steering wheel, a rotating shaft, and a plurality of

magnetic parts, the steering wheel is disposed in the steering space

of the stator, the rotating shaft penetrates and is clamped to the

steering wheel, outside the cover and the back cover, a plurality of magnetic parts are arranged around the outer side of the steering wheel and spaced apart from the at least one coil group.

4.The waterproof motor according to claim 3, further includes

two waterproof collars, the rotating shaft has two clamping grooves,

the two waterproof collars are respectively clamped in the two

clamping grooves and connected with the rotating shaft as a whole,

and the rotor synchronously drives the waterproofing collars to turn

relative to the casing.

5.The waterproof motor according to claim 1, further includes

two oil seal assemblies and two waterproof collars, the two oil seal

assemblies are respectively arranged in the front cover and the rear

cover and sleeved on both ends of the rotor, and the two waterproof

collars are sleeved on both ends of the rotor.

6.The waterproof motor according to claim 5, wherein each of

the oil seal components includes an oil seal ring and a seal ring, the

two oil seal rings abut against the inner sides of the front cover and

the rear cover respectively, and one of the seal rings is disposed in

one of the recessed holes of the oil seal ring, closely fitted to the

front cover, and the other sealing ring is arranged in the recess of

the other oil seal ring and tightly fitted to the rear cover.

7.The waterproof motor according to claim 6, wherein each of

the oil seal components includes an oil seal and a lubricating layer.

The two oil seals are ringed on both ends of the rotor and are spaced apart from the two oil seal rings, the two lubrication layers are respectively filled in the two oil seal rings and the two oil seals. In between, two seals are respectively tightly attached to the two inner openings of the front cover and the back cover, and the two waterproof collars are respectively tightly attached to the two outer openings of the front cover and the back cover, so that the lubricating layers and the oil seals are respectively restricted in the front cover and the rear cover.

8.The waterproof motor according to claim 3, further includes

two bearings are respectively arranged in the two grooves of the

casing and sleeved on the outer wall surface of the rotating shaft to

prevent vibration of the rotating shaft during the pivoting process.

9.The waterproof motor according to claim 1, wherein the

casing is provided with two supporting seats which are connected to

the outer ring surface of the casing and are arranged symmetrically

with each other. The waterproof motor according to claim 1,

whereinthe casing is provided with two supporting seats which are

connected to the outer ring surface of the casing and are arranged

symmetrically with each other.