TWI721610B - Shaft sleeve with waterproof and heat dissipation function and motor with waterproof and heat dissipation shaft sleeve - Google Patents

Abstract

A shaft sleeve with waterproof and heat-dissipating functions includes: a body with a first end surface and a second end surface opposite to each other; a through hole extending from the first end surface to the second end surface and penetrating the body The upper part is used for the insertion of an external shaft; a passage extends from the first end surface to the second end surface and penetrates the main body, and the passage and the through hole are not connected to each other; a breathable and waterproof The element is arranged on the first end surface of the main body and shields the passage, so as to block water outside the main body from entering the passage, and allow an external heat energy to escape to the outside of the main body as the gas passes through.

Description

Shaft sleeve with waterproof and heat dissipation function and motor with waterproof and heat dissipation shaft sleeve

The present invention is related to waterproof heat dissipation technology, and particularly relates to a shaft sleeve with waterproof heat dissipation function and a motor with waterproof heat dissipation shaft sleeve.

According to this, the motor is mainly composed of components such as the rotor and the stator. However, the motor will inevitably generate a large amount of heat when it is operated for a long time, and it will accumulate in the motor and cannot be discharged. As a result, its internal components may be thermally damaged or damaged. There is a problem of unstable operation of the motor. In addition to affecting the efficiency of the motor, it may also reduce the service life of the motor.

In order to improve the heat dissipation problem of the conventional motor, the motor casing has been provided with air holes so that the hot air inside the motor can be discharged to the external environment. However, the moisture or dust contained in the external environment is also easy to enter the motor through the aforementioned air holes, which will cause the internal components of the motor to become damp and rust, and increase the probability of damage, so it is indeed necessary to improve it.

The main purpose of the present invention is to provide a shaft sleeve with waterproof and heat dissipation function, which can effectively block moisture or dust, and at the same time facilitate air circulation for heat dissipation, thereby improving the heat dissipation and moisture caused by conventional motors. Or problems caused by factors such as dust.

The reason is that, in order to achieve the above-mentioned object, the present invention provides a shaft sleeve with waterproof and heat-dissipating function, including: a body with a first end surface and a second end surface opposite to each other; a through hole extending from the first end surface To the second end surface and penetrate the main body for insertion of an external rotating shaft; a channel extends from the first end surface to the second end surface and penetrates the main body, and the channel and The through holes are not connected to each other; a breathable and waterproof element is arranged on the first end surface of the body and shields the passage, so as to block water located outside the body from entering the passage, and allow an internal heat to get As the gas passes through, it escapes to the outside of the body.

Wherein, the breathable and waterproof element includes a sleeve, which includes a first end with a first opening, a second end with a second opening, and the second end of the sleeve is screw-locked in the channel , Make the second opening communicate with the channel; a screw cap, which is screw-locked on the first end of the sleeve, and partially closes the first opening; a breathable waterproof membrane is attached to the sleeve and the Between the nuts.

In an embodiment of the present invention, the first end surface of the sleeve is further provided with a first groove, the first groove is spaced apart from the opening of the through hole, and the opening of the channel is located at the first groove. A groove bottom has a height difference between the opening of the channel and the first end surface of the shaft sleeve.

Furthermore, the first end surface of the sleeve is further provided with a second groove, and the second groove is spaced apart from the opening of the through hole, and the first groove and the second groove are not connected to each other, And the second groove bottom is provided with an outlet hole, the outlet hole extends from the second groove bottom to the second end surface and penetrates the shaft sleeve for a set of wires to pass through . Wherein, the second groove is further filled with a sealing layer, and the groove depth of the second groove is greater than the groove depth of the first groove.

In order to prevent external moisture or dust from directly contacting the breathable and waterproof element, the first groove slot is further covered with a cover, and there is a predetermined distance between the cover and the breathable and waterproof element, and The cover body is provided with a through hole in a staggered position relative to the position of the channel. In this way, the service life of the breathable and waterproof element can be increased.

In addition, a third groove is further provided on the end surface of the cover body covering the first end surface of the shaft sleeve, and is respectively communicated with the through hole and the passage.

In addition, the secondary purpose of the present invention is to provide a motor with a waterproof heat-dissipating bushing, which can block external moisture or dust from entering the motor, and at the same time enable the heat inside the motor to smoothly escape to the outside of the motor, thereby Reduce the probability of rust damage to its internal components, thereby increasing the service life of the motor.

The reason is that, in order to achieve the above-mentioned object, the present invention also provides a motor with a waterproof heat-dissipating bushing, which includes a shell with a shell portion and an internal space in the shell portion for accommodating the stator and the rotor; and assembled on the shell It is provided with the aforementioned shaft sleeve, the passage of the shaft sleeve is used to connect the inner space with the outside of the shell, and the water permeable and waterproof element can block the water located outside the shell from entering the passage, and allow the heat energy of the inner space to get As the gas passes through, it escapes to the outside of the body.

Wherein, the shell portion has a front end piece and a rear end piece at two opposite positions, and the internal space is formed between the shell portion, the front end piece and the rear end piece, and the shaft sleeve is attached to The center of the front piece.

Wherein, the outer wall surface of at least one of the front end piece and the rear end piece is convexly provided with a plurality of mutually spaced elongated ribs, and each elongated rib extends along a radial direction of the shell portion.

Wherein, a recess is formed between every two elongated ribs.

A: Shell

10: Shell

101: internal space

11: stator

12: Rotor

13: shaft

14A: Front end piece

14B: Rear end piece

14: Shaft design department

15: Long ribs

16: recess

20, 20A, 20B: shaft sleeve

21: body

211, 211A, 211B: through hole

212: first groove

213: second groove

214: first end face

215: second end face

22, 22B: Outlet hole

23: Sealing layer

24, 24A, 24B, 24C: channel

25, 25A, 25C: breathable and waterproof components

251: Sleeve

2511: first end

2512: first opening

2513: second end

2514: second opening

252: Nut

253: Breathable waterproof membrane

30: oil seal

40, 40B: wire

50, 50B: cover

51: Gas flow path

52, 52B: Through hole

53: third groove

54: Hole

55: keyhole

56: lock firmware

57: Piercing

H: height difference

The first figure is a three-dimensional schematic diagram of the first embodiment of the present invention.

The second figure is a side view of the first embodiment of the present invention.

The third figure is a three-dimensional schematic diagram of the sleeve part of the first embodiment of the present invention.

The fourth figure is an exploded perspective view of the sleeve part of the first embodiment of the present invention.

The fifth figure is a three-dimensional schematic diagram of the first embodiment of the present invention from a different perspective from the third figure.

Fig. 6 is a schematic cross-sectional view of the first embodiment of the present invention.

Figure 7 is a partial enlarged view of Figure 6 of the first embodiment of the present invention.

The eighth figure is a three-dimensional schematic diagram of the sleeve part of the second embodiment of the present invention.

The ninth figure is a three-dimensional schematic diagram of the sleeve part of the third embodiment of the present invention.

The tenth figure is an exploded perspective view of the sleeve part of the third embodiment of the present invention.

Figure 11 is a schematic cross-sectional view of the third embodiment of the present invention.

Figure 12 is a perspective view of the sleeve portion of the fourth embodiment of the present invention.

Figure 13 is a schematic cross-sectional view of Figure 12 of the fourth embodiment of the present invention.

Figure 14 is an exploded schematic view of the sleeve portion of the breathable and waterproof element of the fourth embodiment of the present invention.

Please refer to the first to sixth figures. In the first embodiment of the present invention, the motor with a waterproof and heat-dissipating bush includes a shell A and a bush 20.

The shell A has a shell portion 10, and an internal space 101 in the shell portion 10 for accommodating the stator 11 and the rotor 12, and the rotor 12 is driven by the stator 11. Wherein, the shell portion 10 has a front end piece 14A and a rear end piece 14B at two opposite positions, and the internal space 101 is formed between the shell portion 10, the front end piece 14A, and the back end piece 14B. In addition, at least one of the front end piece 14A and the rear end piece 14B The outer wall surface of one is protrudingly provided with a plurality of mutually spaced elongated ribs 15 each extending along a radial direction of the shell portion 10, even if the elongated rib 15 constitutes a heat dissipation structure, In addition, a recess 16 is formed between every two elongated ribs 15 to provide more heat dissipation area and efficiency, and to dissipate the heat inside the shell 10 through heat conduction with the outside air. The formation of the elongated ribs 15 and the recesses 16 is not limited to those disclosed in the first figure of this example, and can also be designed according to the needs of users. In this example, the front end piece 14A and the rear end piece 14B of the shell 10 are both provided with elongated ribs 15 and recesses 16.

The sleeve 20 is arranged at the center of the front end piece 14A, and includes a body 21 with a first end surface 214 and a second end surface 215 opposite to each other; a through hole 211 extending from the first end surface 214 The through hole 211 is used to insert a shaft 13 of the rotor 12 to the second end surface 215 and penetrates the shaft sleeve 20; a passage 24 extends from the first end surface 214 to the second The end surface 215 penetrates the sleeve 20, and the passage 24 and the through hole 211 are not connected to each other, and communicate with the inner space 101 and the outside of the shell A; a breathable and waterproof element 25 is attached to the body 21 to shield the channel 24, so that the air-permeable and waterproof element 25 blocks the water located outside the shell A from entering the channel 24, and allows the heat energy located in the inner space 101 to escape to the outside of the shell A as the gas passes. .

In this embodiment, the first end surface 214 of the sleeve 20 is further provided with a first groove 212 and a second groove 213. The first groove 212 is spaced apart from the opening of the through hole 211, and the The second groove 213 is also spaced apart from the opening position of the through hole 211, and the first groove 212 and the second groove 213 are not communicated with each other, and the groove depth of the second groove 213 is greater than The groove depth of the first groove 212. In addition, the passage 24 is located at the bottom of the first groove 212, so that the opening of the passage 24 and the first end surface 214 of the sleeve 20 have a height difference H.

Furthermore, the second end surface 215 of the sleeve 20 faces the inner space 101 of the shell 10, so that the passage 24 communicates with the inner space 101 of the shell 10, and the first end surface 214 of the sleeve 20 faces outer Environment. Thereby, the internal space 101 of the shell 10 is only communicated with the external environment through the channel 24. Wherein, an oil seal 30 can be further provided between the sleeve 20 and the front end piece 14A to ensure a sealed state between the two.

In this embodiment, the breathable and waterproof element 25 is a membrane-like structure, which is located at the bottom of the first groove 212 and covers the opening of the channel 24. The height difference H makes the position of the breathable and waterproof element 25 and The first end surfaces 214 form a staggered configuration relationship, so as to provide a space for the gas escaping from the channel 24 to flow. In other embodiments, the breathable and waterproof element 25 can also be a pore structure for filling the channel 24, which can also achieve the aforementioned effects. In this example, the number of the channel 24 is one, but it is not limited to this, and can be changed according to the actual situation.

The slot of the first groove 212 is further covered with a cover 50, and there is a predetermined distance between the cover 50 and the breathable and waterproof element 25, whereby a gas flow is defined between the first groove 212 and the cover 50 A passage 51, and a through hole 52 is provided in the cover 50 in a staggered position relative to the passage 24. Therefore, the configuration of the cover 50 can prevent the accumulation of dust or foreign matter in the first groove 212 and the outside of the breathable and waterproof element 25, which may reduce the ventilation efficiency of the breathable and waterproof element 25. In this example, the cover 50 is connected to the first groove 212 by a snap method. In other embodiments, the breathable and waterproof element 25 can also be attached to the cover 50 to cover the through hole 52. Therefore, the breathable and waterproof element 25 of the present invention can be arranged in the through hole 52 and/or the channel 24, Both can achieve the same effect.

The bottom of the second groove 213 is further provided with an outlet hole 22, which extends from the bottom of the second groove 213 to the second end surface 215 and penetrates the sleeve 20 for a set of wires 40 Passing through, the wire 40 is electrically connected to the stator 11 or the rotor 12. In this example, the number of the outlet holes 22 is 3, but it is not limited to this, and can be changed according to actual conditions.

Furthermore, the second groove 213 is further covered with a sealing layer 23 to ensure that the outlet hole 22 is in a sealed state, and to prevent moisture or dust from penetrating into the inner space 101 of the housing 10 through the outlet hole 22. The internal components of the motor are rusted and damaged. In addition, since the second groove 213 and the first groove 212 are not in communication with each other, the gas discharged through the channel 24 will not affect the outlet hole 22 in the second groove 213 and the passage hole 22 therethrough.的线40。 The wire 40.

As shown in Figure 8, it is the second embodiment of the present invention. The main difference from the first embodiment is that the sleeve 20A only has a through hole 211A, a channel 24A, and a breathable and waterproof element 25A, instead of a first recess. The groove, the second groove, the outlet hole, the sealing layer and the cover can also achieve the effect of heat dissipation.

As shown in Figures 9 to 11, it is the third embodiment of the present invention. The main difference from the first embodiment is that the opening of the passage 24B and the first end surface 214B of the sleeve 20B are on the same plane. , And the cover 50B covers the first end surface 214B of the sleeve 20B, and has a through hole 52B, a third groove 53, a plurality of openings 54 and two locking holes 55, wherein the through hole 52B is opposite to the passage 24B The position of the third groove 53 is in a staggered configuration, and the third groove 53 communicates with the through hole 52B and the passage 24B, and the depth of the third groove 53 allows the cover 50B and the opening of the passage 24B to have A predetermined distance is defined between the sleeve 20B and the cover 50B to define a gas flow channel 51B; the openings 54 are spaced apart from the through hole 52B and the third groove 53, and correspond to some outlet lines The position of the hole 22B is configured for the wire 40B to pass through; each of the lock holes 55 is spaced from the through hole 52B, the third groove 53 and the opening 54 for a lock piece 56 to lock, and the cover The body 50B is connected and fixed to the sleeve 20B. Furthermore, the cover 50B is further provided with a through hole 57 corresponding to the position of the through hole 211B of the shaft sleeve 20B for inserting the rotating shaft 13 (not shown), and the through hole 57 is not connected to the through hole 52B, Three grooves 53, opening 54 and lock hole 55.

As shown in Figures 12 to 14, it is the fourth embodiment of the present invention. The main difference from the second embodiment is that the breathable and waterproof element 25C includes a sleeve 251 that includes a first end 2511 , Has a first opening 2512, a second end 2513, and a second opening 2514, and the second end 2513 of the sleeve 251 is screw-locked in the channel 24C, so that the second opening 2514 and the channel 24C connection; one The nut 252 is screw-locked on the first end 2511 of the sleeve 251 and partially closes the first opening 2512; a breathable waterproof membrane 253 is arranged between the sleeve 251 and the nut 252, and The breathable and waterproof membrane 253 is used to conditionally block the flow between the first opening 2511 and the second opening 2513. Wherein, there is a gap between the sleeve 251 and the nut 252 for gas to escape.

20: Shaft sleeve

213: second groove

212: first groove

22: Outlet hole

23: Sealing layer

24: Channel

25: Breathable and waterproof components

40: Wire

50: Lid

51: Gas flow path

52: Through hole

Claims (12)

A shaft sleeve with waterproof and heat dissipation function is applied to a motor and assembled on the rotating shaft of the motor. The shaft sleeve includes: a body with a first end surface and a second end surface opposite to each other; A hole extends from the first end surface to the second end surface and penetrates the body; a channel extends from the first end surface to the second end surface and penetrates the body, and the channel and the The through holes are not connected to each other; a breathable and waterproof element is arranged on the first end surface of the body and shields the passage, so as to block water located outside the body from entering the passage, and allow an internal heat energy to follow The gas passes through and escapes to the outside of the body. The first end surface of the body is further provided with a second groove. The second groove is spaced from the opening of the through hole. The bottom of the second groove is provided with a A wire outlet hole extends from the bottom of the second groove to the second end surface and penetrates the shaft sleeve for a set of wires to pass through. For example, the shaft sleeve with waterproof and heat-dissipating function described in item 1 of the scope of patent application, wherein the first end surface of the shaft sleeve is further provided with a first groove, and the first groove is spaced apart from the opening of the through hole, The opening of the channel is located at the bottom of the first groove, so that there is a height difference between the opening of the channel and the first end surface of the sleeve, and the first groove and the second groove are not connected to each other through. For example, the shaft sleeve with waterproof and heat-dissipating function described in item 2 of the scope of patent application further includes a sealing layer, which covers the second groove. For example, the shaft sleeve with waterproof and heat-dissipating function described in item 2 of the scope of patent application, wherein the groove depth of the second groove is greater than the groove depth of the first groove. A shaft sleeve with waterproof and heat dissipation function is applied to a motor and assembled on the rotating shaft of the motor. The shaft sleeve includes: a body with a first end surface and a second end surface opposite to each other; A through hole extends from the first end surface to the second end surface and penetrates the body; a passage extends from the first end surface to the second end surface and penetrates the body, and the passage and The through holes are not connected to each other; a breathable and waterproof element is arranged on the first end surface of the body and shields the passage, so as to block water located outside the body from entering the passage, and allow an internal heat to get As the gas escapes to the outside of the body, the first end surface of the sleeve is further provided with a first groove. The first groove is spaced from the opening of the through hole, and the opening of the channel is located The bottom of the first groove has a height difference between the opening of the channel and the first end surface of the shaft sleeve. The shaft sleeve with waterproof and heat-dissipating function further includes a cover body covering the first recess For the slot, there is a predetermined distance between the cover body and the air-permeable and waterproof element, and a through hole is arranged in a staggered position between the cover body and the channel. For example, the shaft sleeve with waterproof and heat dissipation function described in item 5 of the scope of patent application, wherein the breathable and waterproof element is a breathable and waterproof membrane attached to the body to shield the passage. A shaft sleeve with waterproof and heat dissipation function is applied to a motor and assembled on the rotating shaft of the motor. The shaft sleeve includes: a body with a first end surface and a second end surface opposite to each other; A hole extends from the first end surface to the second end surface and penetrates the body; a channel extends from the first end surface to the second end surface and penetrates the body, and the channel and the The through holes are not connected to each other; a breathable and waterproof element is arranged on the first end surface of the body and shields the passage, so as to block water located outside the body from entering the passage, and allow an internal heat energy to follow The gas passes through and escapes to the outside of the body. The shaft sleeve with waterproof and heat-dissipating function further includes a cover body, which covers the first end surface, and the cover body and There is a predetermined distance between the breathable and waterproof elements, and a third groove is further provided at a position corresponding to the passage on one side of the cover body covering the first end surface, and the groove bottom of the third groove penetrates A through hole is provided that is offset from the position of the channel, and the third groove is respectively communicated with the through hole and the channel. As described in item 7 of the scope of patent application, the shaft sleeve with waterproof and heat dissipation function, wherein the first end surface of the main body is further provided with a second groove, and the second groove is spaced apart from the opening of the through hole, The bottom of the second groove is provided with an outlet hole, and the outlet hole extends from the bottom of the second groove to the second end surface and penetrates the shaft sleeve for a set of wires to pass through. A motor with a waterproof and heat-dissipating bushing includes: a shell with a shell portion, and an internal space in the shell portion for accommodating the stator and the rotor; as described in any one of claims 1 to 8 A waterproof and heat-dissipating shaft sleeve is provided on the shell. The channel of the shaft sleeve connects the inner space with the outside of the shell, and through the air-permeable and waterproof element, the water outside the shell can be blocked from entering the channel and allow The heat energy of the internal space must be dissipated to the outside of the body as the gas passes through. For example, the motor with water-proof heat-dissipating bushing described in item 9 of the scope of patent application, wherein the shell part has a front end piece and a rear end piece at a position opposite to each other, and the inner space is formed in the shell part and the rear part. Between the front end piece and the back end piece, and the shaft sleeve is arranged at the center of the front end piece. For example, the motor with water-proof heat-dissipating bushing described in item 10 of the scope of patent application, wherein the outer wall surface of at least one of the front end piece and the rear end piece is protrudingly provided with a plurality of mutually spaced elongated ribs, each of which is The shaped ribs respectively extend along a radial direction of the shell portion. For example, the motor with waterproof heat dissipation bushing described in item 11 of the scope of patent application, wherein a recess is formed between every two elongated ribs.

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