CN214799122U - Double-output-shaft brushless motor - Google Patents

Abstract

The utility model discloses a two play axle brushless motor, including the casing that has accommodating space, accept in stator and rotor in the accommodating space, the rotor includes the pivot, the casing include the barrel and set up in the apron at barrel both ends, the apron is including being fixed in the mechanical labyrinth lid of pivot and with the airtight end cover of connection can be dismantled to the barrel, mechanical labyrinth lid with there is the clearance between the airtight end cover, airtight end cover include with the admission joint of accommodating space intercommunication in two play axle brushless motor's the course of work, malleation air by admission joint gets into accommodating space and by clearance discharge. Compared with the prior art, the utility model provides a two play axle brushless motor, sealing performance is good, protection level is high, the reliability is stronger.

Description

Double-output-shaft brushless motor

Technical Field

The utility model relates to a five burnishing machines technical field, concretely relates to two play axle brushless motor.

Background

With the accelerated development of the internet era, a large number of 3C electronic products are emerging continuously. 3C electronic products (represented by a mobile phone middle frame and a rear cover) are complex in appearance and high in appearance requirement, and a five-axis polishing machine is mainly used for grinding and polishing parts in the market at present. The polishing head of the five-axis polishing machine is generally driven by a gear box or a high-speed electric main shaft, and the polishing head using the gear box has the defects of low transmission precision and high noise; the high-speed electric spindle has the defects of over-high rotating speed of generally more than 10000 r/min, actual rotating speed of a five-axis polishing machine is generally 3000 r/min, small output torque and high use cost. The method specifically comprises the following two problems:

in the five-axis polishing machine in the prior art, the air sealing performance of the motor is not ideal, and in the working process of the five-axis polishing machine, polishing solution is dissolved in a containing space flowing into the interior along a gap between an air sealing end cover and a mechanical labyrinth cover, so that the performance of the brushless motor is influenced and even the structure of the motor is directly damaged.

Therefore, there is a need to provide a new dual-output-shaft brushless motor with good sealing performance, high protection level and high reliability to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a two play axle brushless motor that sealing performance is good, protection level is high, the reliability is stronger.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a two play axle brushless motor, including the casing that has accommodating space, accept in stator and rotor in the accommodating space, the rotor includes the mesosphere, the casing include the barrel and set up in the apron at barrel both ends, the apron including be fixed in the mechanical labyrinth lid of mesosphere and with the airtight end cover of connection can be dismantled to the barrel, mechanical labyrinth lid with there is the clearance between the airtight end cover, airtight end cover include with the admission joint of accommodating space intercommunication in two play axle brushless motor's the course of operation, malleation air by admission joint gets into accommodating space and by the clearance is discharged.

Preferably, the hermetic sealing end cover further includes a body portion and an annular spiral gas passage opened in the body portion, an input end of the spiral gas passage is communicated with the gas inlet connector, and an output end of the spiral gas passage is communicated with the accommodating space.

Preferably, the spiral gas channel includes a first channel far away from the central rotating shaft, a second channel close to the central rotating shaft, a plurality of third channels connecting the second channel and the accommodating space, and a fourth channel connecting the first channel and the gas inlet joint.

Preferably, the plurality of third channels are sequentially distributed along the axial direction of the second channel, and the intervals between the adjacent third channels are equal.

Preferably, the airtight end cover comprises a main body part and a supporting wall formed by extending from the end face, far away from the cylinder body, of the main body part to the direction far away from the cylinder body, the main body part comprises a first main body part and a second main body part, the first main body part is located on one side, close to the accommodating space, of the supporting wall, the second main body part is located on one side, far away from the accommodating space, of the supporting wall, the output end of the third channel is arranged on the surface, far away from the cylinder body, of the first main body part, and the orthographic projection of the gap to the first main body part is completely located in the third channel.

Preferably, the distance between the surface of the first main body part far away from the cylinder and the gap is 3cm to 8 cm.

Preferably, the distance between the surface of the first main body part far away from the cylinder and the gap is 5 cm.

Preferably, the rotor is filled with glue by adopting a glue filling process.

In summary, compared with the prior art, the double-output-shaft brushless motor provided by the utility model has the advantages that the air inlet joint communicated with the accommodating space is arranged, so that air enters the accommodating space through the air inlet joint and is discharged from the gap in the working process of the double-output-shaft brushless motor, the polishing solution is prevented from entering the accommodating space through the gap between the mechanical labyrinth cover and the air-tight end cover, the water vapor sealing grade of the double-output-shaft brushless motor is increased, and the possibility of water vapor entering the motor is reduced; meanwhile, the rotor is subjected to glue pouring process treatment, so that the protection grade of the motor is further enhanced, and the running stability and reliability of the double-output-shaft brushless motor are improved; the spiral gas channel is arranged in the gas-tight end cover, so that gas enters through the gas inlet joint and flows spirally in the narrow channel to increase the kinetic energy of the gas, and after the gas is sprayed out through the third channel, most of the gas is directly sprayed to the gap, so that the gas tightness degree of the double-output-shaft brushless motor is ensured.

Drawings

Fig. 1 is a schematic perspective view of a dual-output-shaft brushless motor according to the present invention;

fig. 2 is an exploded schematic view of a three-dimensional structure of a dual-output-shaft brushless motor provided by the present invention;

fig. 3 is a sectional view of the dual output brushless motor shown in fig. 2 taken along line a-a.

In the figure, 100, a double-output shaft brushless motor; 10. a housing; 11. a barrel; 12. a cover plate; 121. a mechanical labyrinth cover; 122. hermetically sealing the end cover; 1221. an air inlet joint; 1222. a body portion; 12221. a main body portion; 12222. a support wall; 1223. a helical gas channel; 12231. a first channel; 12232. a second channel; 12233. a third channel; 12234. a fourth channel; 20. a stator; 30. a rotor; 31. a middle rotating shaft; 101. an accommodating space; 102. a gap; 103. a first main body portion; 104. a second body portion.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples. The following experimental examples and examples are intended to further illustrate but not limit the invention.

Referring to fig. 1 to fig. 3, the present invention provides a dual-output-shaft brushless motor 100, wherein the dual-output-shaft brushless motor 100 includes a housing 10 having an accommodating space 101, a stator 20 and a rotor 30 accommodated in the accommodating space 101. The rotor 30 includes a middle rotating shaft 31, and after the dual-output-shaft brushless motor 100 is powered on to work, the stator 20 drives the rotor 30 to rotate, so as to drive the middle rotating shaft 31 to rotate.

The casing 10 includes a cylinder 11, cover plates 12 disposed at two ends of the cylinder 11, and sealing rings (not shown) disposed between the cylinder 11 and the cover plates 12. Wherein, the cover plate 12 is connected with the cylinder 11 through screws. Through setting up the sealing ring, further increase the gas tightness of two play axle brushless motor. Preferably, the material of the sealing ring is rubber.

The cover plate 12 includes a mechanical labyrinth cover 121 fixed to the central rotating shaft 31 and a hermetic end cover 122 detachably connected to the cylinder 11. Wherein a gap 102 exists between the mechanical labyrinth cover 121 and the airtight end cover 122.

The airtight end cover 122 includes an air inlet connector 1221 communicating with the housing space, a body 1222, and an annular spiral air passage 1223 provided in the body 1222. The input end of the spiral gas channel 1223 is communicated with the gas inlet joint 1221, and the output end is communicated with the accommodating space 101. During the operation of the dual-output-shaft brushless motor 100, positive pressure air enters the accommodating space 101 through the air inlet joint 1221 and is discharged through the gap 102.

The air inlet joint 1221 is connected with an external air supply device, and the external air supply device fills air into the accommodating space 101 through the air inlet joint 1221.

The body 1222 includes a body 12221 and a support wall 12222 extending from the body 12221 in a direction away from the cylinder 11. The support wall 12222 divides the body 12221 into a first body 103 housed in the housing space 101 and a second body 104 outside the housing space 101.

The spiral gas passage 1223 includes a first passage 12231 distant from the rotation axis 31, a second passage 12232 close to the rotation axis 31, a plurality of third passages 12233 connecting the second passage 12232 and the accommodating space 101, and a fourth passage 12234 connecting the first passage 12231 and the air inlet joint 1221.

The third passages 12233 are sequentially distributed along the axial direction of the second passage 12232, and the intervals between adjacent third passages 12233 are equal.

The output end of the third passage 12233 is opened on the surface of the first main body 103 away from the cylinder 11, and the orthographic projection of the gap 102 to the first main body 103 is completely in the third passage 12233.

Preferably, the distance between the surface of the first body 103 away from the cylinder 11 and the gap 102 is 3cm to 8 cm. Preferably, in the present embodiment, a distance between a surface of the first body 103 away from the cylindrical body 11 and the gap 102 is 5 cm. By controlling the distance between the surface of the first main body 103 away from the cylinder 11 and the gap 102, that is, the distance between the output end of the third passage 12233 and the gap 102, it is ensured that the external air can be directly blown to the gap 102 after being filled into the accommodating space 101, so as to isolate the polishing liquid.

The rotor 30 is treated by a glue-pouring process. Therefore, the stability and the reliability of the double-output-shaft brushless motor are further improved.

Compared with the prior art, the double-output-shaft brushless motor provided by the utility model has the advantages that the air inlet joint communicated with the accommodating space is arranged, so that air enters the accommodating space through the air inlet joint and is discharged through the gap in the working process of the double-output-shaft brushless motor, the polishing liquid is prevented from entering the accommodating space through the gap between the mechanical labyrinth cover and the airtight end cover, the water vapor sealing grade of the double-output-shaft brushless motor is increased, and the possibility of water vapor entering the motor is reduced; meanwhile, the rotor is subjected to glue pouring process treatment, so that the protection grade of the motor is further enhanced, and the running stability and reliability of the double-output-shaft brushless motor are improved; the spiral gas channel is arranged in the gas-tight end cover, so that gas enters through the gas inlet joint and flows spirally in the narrow channel to increase the kinetic energy of the gas, and after the gas is sprayed out through the third channel, most of the gas is directly sprayed to the gap, so that the gas tightness degree of the double-output-shaft brushless motor is ensured.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should be construed as the scope of the present invention.

Claims (10)

1. The utility model provides a two play axle brushless motor, including the casing that has accommodating space, accept in stator and rotor in the accommodating space, the rotor includes the well pivot, a serial communication port, the casing include the barrel and set up in the apron at barrel both ends, the apron including be fixed in the mechanical labyrinth lid of well pivot and with the airtight end cover of connection can be dismantled to the barrel, mechanical labyrinth lid with there is the clearance between the airtight end cover, airtight end cover include with the admission joint of accommodating space intercommunication in two play axle brushless motor's the course of operation, malleation air by admission joint gets into accommodating space and by the clearance is discharged.

2. The brushless electric machine according to claim 1, wherein the hermetic end cap further comprises a body portion and a spiral gas passage that is opened in the body portion and has a ring shape, an input end of the spiral gas passage is communicated with the inlet connector, and an output end of the spiral gas passage is communicated with the accommodating space.

3. The brushless electric machine of claim 2, wherein the spiral gas channel comprises a first channel distal from the central axis, a second channel proximal to the central axis, a plurality of third channels connecting the second channel with the housing space, and a fourth channel connecting the first channel with the inlet connector.

4. The brushless electric machine according to claim 3, wherein the third channels are sequentially distributed along the axial direction of the second channel, and the intervals between the adjacent third channels are equal.

5. The brushless electric machine according to claim 3, wherein the body portion includes a main body portion and a supporting wall extending from an end surface of the main body portion away from the barrel body to a direction away from the barrel body, the supporting wall divides the main body portion into a first main body portion accommodated in the accommodating space and a second main body portion outside the accommodating space, the output end of the third channel is opened on a surface of the first main body portion away from the barrel body, and an orthographic projection of the gap to the first main body portion completely falls within the third channel.

6. The brushless electric machine of claim 5, wherein a distance between a surface of the first body portion away from the barrel and the gap is 3cm to 8 cm.

7. The dual-output brushless motor of claim 6, wherein a gap between a surface of the first body portion distal from the barrel and the gap is 5 cm.

8. The dual-output shaft brushless electric machine of claim 1, wherein the rotor is treated with a potting process.

9. The dual-output-shaft brushless motor of claim 1, wherein the cover plate is connected to the cylinder by screws, and the housing further comprises a sealing ring disposed between the cylinder and the cover plate.

10. The brushless electric machine according to claim 9, wherein the sealing ring is made of rubber.

Images