CN115296466A

CN115296466A - Double-end motor

Info

Publication number: CN115296466A
Application number: CN202211051826.1A
Authority: CN
Inventors: 刘艳丽; 宫本久士
Original assignee: Shunde Kingtec Appliances Co ltd
Current assignee: Shunde Kingtec Appliances Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-11-04

Abstract

The invention discloses a double-end motor, which comprises a motor shell and a motor base, wherein the motor shell is rotatably arranged on the motor base; the motor base is provided with a cross-connecting channel and an assembling cavity, and one end of the cross-connecting channel is provided with a first cross-connecting port; the other end of the cross-connecting channel is provided with a second cross-connecting port; the first penetrating port is detachably covered with a first oil sealing cover. The motor shell is internally provided with an installation cavity, a magnet ring, a coil assembly and a rotating shaft; one end of the rotating shaft penetrates into the penetration channel through the first penetration port and forms a rotating end; the other end of the rotating shaft extends out of the first penetrating port and is fixed with the motor shell; the rotating end penetrates out of the second penetrating port and is pivoted in the assembling cavity so as to be matched with the inner wall of the assembling cavity at intervals; the part of the rotating end which is penetrated into the penetrating channel is pivoted with the penetrating channel through a bearing. The end part of the rotating shaft of the invention can be rotatably assembled in an assembly cavity of the motor base; and lubricating oil is introduced through the cross-connecting channel to lubricate the bearing and the rotating shaft structure.

Description

Double-end motor

Technical Field

The invention relates to the technical field of motors, in particular to a double-end motor.

Background

Currently, there are two types of brushless motors: an inner rotor type in which the rotor is inside, and an outer rotor type in which the rotor is outside. In any type, the rotor is provided with permanent magnets, three-phase coils of the motor are respectively connected with a controller through lead wires, alternating current with changed current direction flows on the lead wires, and the controller changes the current direction and the current magnitude of each phase coil to enable the rotor to rotate.

However, in order to make the rotation shaft rotate smoothly, the rotation shaft is pivoted inside the motor housing through an oil seal bearing, and the oil seal bearing has an oil groove, and during assembly, the oil groove inside the bearing is filled with lubricating oil and is sealed with the outer surface of the rotation shaft. And the area of contact of this structure bearing and pivot is the both ends of oil groove, and area of contact is less, and easy wearing and tearing lead to oil leak and the malfunctioning condition of bearing in the use.

In addition, the pivot and the rotor linkage of current motor, and all be through bearing pin joint in motor casing, and the tip of pivot stretches out the motor casing assembly, and at the rotation in-process, the epaxial bearing of commentaries on classics causes the striking noise generation in the extended position of pivot and motor casing along axial motion easily, and the friction between pivot and the motor casing also can produce the noise.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a double-end motor, wherein the end part of a rotating shaft of the double-end motor is rotatably assembled in an assembly cavity of a motor base and is not directly contacted with the motor base; lubricating oil is introduced through the cross-connecting channel to lubricate the bearing and the rotating shaft structure, and then the first oil seal cover is used for oil sealing

The purpose of the invention is realized by adopting the following technical scheme:

a double-end motor comprises a motor body,

the motor shell is rotatably arranged on the motor base; the motor base is provided with a cross-connecting channel and an assembling cavity, and one end of the cross-connecting channel is provided with a first cross-connecting port; the other end of the cross-connecting channel is provided with a second cross-connecting port which is communicated with the assembling cavity; the cross-connecting channel is used for guiding lubricating oil; the first penetrating port is detachably covered with a first oil sealing cover.

The motor shell is internally provided with an installation cavity, a magnet ring, a coil assembly and a rotating shaft, wherein the magnet ring is installed in the installation cavity and connected with the motor shell; the coil assembly penetrates through the magnet ring; the coil assembly is sleeved on the outer wall of the cross-connecting channel and fixed with the cross-connecting channel; one end of the rotating shaft penetrates into the penetration channel through the first penetration port and forms a rotating end; the other end of the rotating shaft extends out of the first penetrating port and is fixed with the motor shell; the rotating end penetrates out of the second penetrating port and is pivoted in the assembling cavity so as to be matched with the inner wall of the assembling cavity at intervals; the part of the rotating end penetrating into the penetrating channel is pivoted to the penetrating channel through a bearing.

Furthermore, the part of the rotating end extending into the assembly cavity is provided with a limiting sheet, and the limiting sheet is used for being abutted against two end walls of the assembly cavity.

Furthermore, an annular groove is formed in the outer surface of the part, extending into the assembly cavity, of the rotating end; the limiting piece is clamped in the annular groove.

Further, the rotating end extends out of the end of the assembling cavity far away from the second penetrating port.

Further, the part of the rotating end, which extends out of the end part of the assembling cavity far away from the second penetrating port, is provided with an elastic pin; the elastic pin is used for being clamped with the first rotating piece.

Furthermore, a buckle is arranged on the outer periphery of the first oil seal cover; the outer wall of the cross-connecting channel is provided with a clamping groove; the buckle is clamped in the clamping groove so that the first oil sealing cover is sealed at the first penetrating port.

Furthermore, the fasteners are arranged in a plurality and distributed at intervals around the circumference of the central axis of the first oil sealing cover; a plurality of clamping grooves are formed; the plurality of buckles are clamped in the plurality of clamping grooves.

Furthermore, a plurality of through holes are formed in the first oil seal cover; a plurality of buckle settings are located to a plurality of through-holes one-to-one.

Further, the end part of the assembly cavity, which is far away from the second penetrating port, is sealed by a second sealing cover; and a connecting plate is convexly arranged on the periphery of the second oil seal cover and fixedly connected to the motor base through screws.

Further, be equipped with arc surface and second rotation piece on the motor casing, the arc surface is located the terminal surface that motor base was kept away from to motor casing.

Compared with the prior art, the invention has the beneficial effects that:

1. when the motor base is used, the rotating shaft is pivoted in the cross-connecting channel of the motor base through the bearing, lubricating oil is introduced into the cross-connecting channel, the bearing and the rotating shaft in the cross-connecting channel can be lubricated, and an oil seal bearing is not needed, so that the inner wall of the bearing can be directly contacted with the outer wall of the rotating shaft, friction is reduced, and the service life of the bearing is longer; meanwhile, the first oil sealing cover is sealed at the first penetrating port of the penetrating passage to prevent oil leakage.

2. Because the rotation end is after assembling to the motor base, the tip of rotation end stretches into the assembly chamber, and the rotation end is through the restriction of second cross-under, makes the rotation end restriction at the assembly intracavity, and rotation end outer wall and assembly intracavity wall clearance fit reduce the assembly contact surface of rotation end and motor base, can reduce the friction that brings because of the assembly surface, so noise reduction effect is better.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of another embodiment of the present invention;

fig. 3 is a partial structural view of the motor of the present invention;

FIG. 4 is a cross-sectional view of the present invention;

FIG. 5 is a schematic structural diagram of a motor base according to the present invention;

FIG. 6 is a schematic view of another perspective structure of the motor base of the present invention;

FIG. 7 is a schematic view of a first oil seal cover of the present invention;

fig. 8 is a schematic structural view of a second oil cover of the present invention.

In the figure: 10. a motor base; 11. connecting a channel in a penetrating way; 12. an assembly chamber; 13. a card slot; 20. a motor housing; 21. a circular arc surface; 22. a second rotating member; 30. a rotating shaft; 31. a first rotating member; 32. a spring pin; 33. a limiting sheet; 40. a bearing; 50. a magnet ring; 60. a coil assembly; 70. a first oil seal cover; 71. a first seal ring; 72. buckling; 73. a through hole; 80. a second oil seal cover; 81. a second seal ring; 82. a connecting plate.

Detailed Description

The invention will be further described with reference to the accompanying drawings and the detailed description below:

in the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

A double-ended motor as shown in fig. 1-8 comprises a motor housing 20 and a motor base 10, and comprises a motor housing 20 and a motor base 10, wherein the motor housing 20 is rotatably mounted on the motor base 10. A cross-under channel 11 and an assembly cavity 12 are arranged on the motor base 10, and a first cross-under port is arranged at one end of the cross-under channel 11; the other end of the cross-connecting channel 11 is provided with a second cross-connecting port, and the second cross-connecting port is communicated with the assembling cavity 12. The through channel 11 can be used for introducing lubricating oil, and the first through port is detachably covered with a first oil sealing cover 70.

Specifically, the motor housing 20 is provided with an installation cavity, a magnet ring 50, a coil assembly 60 and a rotating shaft 30, and when the motor housing 20 is rotatably installed on the motor base 10, the through-connection channel 11 on the motor base 10 can be through-connected in the installation cavity. The magnet ring 50 is mounted in the mounting cavity and the magnet ring 50 is connected to the motor housing 20. The coil assembly 60 is inserted into the magnet ring 50, and the coil assembly 60 is sleeved on the outer wall of the through-connection channel 11 and fixed with the through-connection channel 11.

In addition, one end of the rotating shaft 30 is penetrated into the penetration passage 11 by the first penetration port and formed as a rotating end, and the other end of the rotating shaft 30 is protruded from the first penetration port and fixed with the motor housing 20. The rotating end penetrates through the second penetrating port and is pivoted in the assembling cavity 12, and the outer wall of the rotating end is in spaced fit with the inner wall of the assembling cavity 12. And the part of the rotating end penetrating into the penetrating channel 11 is pivoted to the penetrating channel 11 through a bearing 40.

On the basis of the above structure, when the double-end motor of the present invention is used, the magnet ring 50 and the coil assembly 60 may be assembled to the installation cavity, the rotating shaft 30 connected to the motor housing 20 may extend into the cross-connecting channel 11 through the first cross-connecting port, and is pivoted in the cross-connecting channel 11 through the bearing 40, and after lubricating oil is introduced into the cross-connecting channel 11, the first oil sealing cover 70 may be covered on the first cross-connecting channel 11 of the cross-connecting channel 11, and of course, for the penetrating of the rotating shaft 30, after the penetrating hole is provided on the first oil sealing cover 70 for the penetrating of the rotating shaft 30, the first oil sealing cover 70 is covered again.

After the rotating end is assembled to the motor base 10, the end of the rotating end extends into the assembly cavity 12, the rotating end is limited by the second penetrating port, the rotating end is limited in the assembly cavity 12, the outer wall of the rotating end is in spaced fit with the inner wall of the assembly cavity 12, the assembly contact surface of the rotating end and the motor base 10 is reduced, friction caused by the assembly surface can be reduced, and therefore the noise reduction effect is better.

When the motor is used, the rotating part can be connected with the motor shell 20, the coil assembly 60 can be powered on, then an electromagnetic field generated by the coil assembly 60 acts on a magnetic field of the magnet ring 50, and further drives the motor shell 20 connected with the magnet ring 50 to rotate, and the motor shell 20 can rotate by taking the rotating shaft 30 as a rotating axis and driving the rotating part connected with the rotating shaft to rotate.

It should be noted that, when in use, the rotating shaft 30 is pivoted in the penetrating channel 11 of the motor base 10 through the bearing 40, and lubricating oil is introduced into the penetrating channel 11, so that the bearing 40 and the rotating shaft 30 in the penetrating channel 11 can be lubricated without using the oil seal bearing 40, and therefore, the inner wall of the bearing 40 can be directly contacted with the outer wall of the rotating shaft 30, friction is reduced, and the service life of the bearing 40 is longer; meanwhile, the first oil sealing cover 70 is sealed and covered on the first penetrating port of the penetrating channel 11, and oil is prevented from leaking.

Further, the part of the rotating end extending into the assembly cavity 12 is provided with a limiting sheet 33, after the rotating end is assembled to the assembly cavity 12, the limiting sheet 33 can be abutted against two end walls of the assembly cavity 12, when the rotating end rotates or is assembled, the limiting sheet 33 on the rotating end can be abutted against the two end walls, the limiting is realized, the rotating end of the rotating shaft 30 is prevented from being separated from the assembly cavity 12, and the assembly structure of the rotating shaft 30 is more stable.

More specifically, in order to facilitate the assembly of the limiting piece 33, an annular groove may be formed in the outer surface of the portion of the rotating end extending into the assembly cavity 12, and the limiting piece 33 is clamped in the annular groove, that is, the limiting piece 33 is directly clamped and assembled with the annular groove during the assembly, so that the assembly and disassembly are facilitated.

Of course, the limiting piece 33 can be realized by a circlip structure in the prior art, or by a protruding piece or a protruding block structure directly machined on the outer surface of the rotating shaft 30.

Further, a buffer gasket can be arranged on the end wall of the assembling cavity 12 far away from the second penetrating port, so that when the end part of the rotating end moves behind the assembling cavity 12, the end part of the rotating end can be abutted against the buffer gasket, impact is buffered, and noise is reduced.

Specifically, the buffer pad can be selected for use to rubber gasket or silica gel gasket etc. can slow down the striking, noise reduction.

Further, in order to facilitate the double-end output rotation motion of the rotating shaft 30, the rotating end extends from the end of the assembling cavity 12 far away from the second penetrating port, the portion of the rotating end extending out of the assembling cavity 12 can be connected with the first rotating member 31, and the motor housing 20 is also connected with the second rotating member 22, so that after the coil assembly 60 is powered on, the generated electromagnetic field and the magnetic field of the magnet ring 50 drive the motor housing 20 to rotate, and further drive the second rotating member 22 connected with the motor housing 20 to rotate, and the rotating shaft 30 is connected with the motor housing 20, so that the first rotating member 31 connected with the rotating end can rotate at the same time, and double-end output is realized.

Furthermore, an elastic pin 32 can be further arranged at the end part of the rotating end, the elastic pin 32 is arranged at the part, extending out from the end part of the assembling cavity 12 far away from the second penetrating port, of the rotating end, when the first rotating member 31 is assembled with the rotating end, a positioning hole can be formed in the first rotating member 31, during assembly, the first rotating member 31 can be sleeved at the rotating end, during assembly, the elastic pin 32 is compressed, and then when the positioning hole in the first rotating member 31 corresponds to the elastic pin 32, the elastic pin 32 can be popped out and clamped in the positioning hole, so that assembly is achieved, and disassembly is facilitated.

Of course, the first rotating member 31 can be assembled with the rotating end of the rotating shaft 30 by screw assembly or by screws or bolts.

Further, in order to facilitate the assembly of the first oil sealing cover 70 and the cross-connecting channel 11 of the motor base 10, a buckle 72 may be disposed on the outer periphery of the first oil sealing cover 70, and a clamping groove 13 is disposed on the outer wall of the cross-connecting channel 11, when the first oil sealing cover 70 is covered on the first cross-connecting port of the cross-connecting channel 11, the buckle 72 may be clamped in the clamping groove 13, that is, the first oil sealing cover 70 and the cross-connecting channel 11 are detachably assembled, so as to facilitate the encapsulation and addition of oil.

More specifically, the plurality of buckles 72 are arranged, the plurality of buckles 72 are circumferentially distributed around the central axis of the first oil seal cover 70 at intervals, the plurality of clamping grooves 13 corresponding to the cross-connecting channel 11 are arranged, when the oil seal cover is assembled, the plurality of buckles 72 can be clamped into the plurality of clamping grooves 13 in a one-to-one correspondence manner, namely, the buckles 72 and the clamping grooves 13 can be clamped in the circumferential direction to form limitation, on one hand, stable assembly can be achieved, and on the other hand, the plurality of buckles 72 and the plurality of clamping grooves 13 are circumferentially limited to prevent the first oil seal cover 70 from rotating relative to the rotating shaft 30.

Further, a plurality of through holes 73 may be provided on the first oil seal cover 70, and the plurality of through holes 73 are provided in the plurality of buckles 72 in a one-to-one correspondence. The plurality of through holes 73 can make the strength of the first oil seal cover 70 corresponding to the plurality of buckles 72 relatively weak, so that the buckles 72 can have certain deformation at the connecting position, and the buckling and the releasing are convenient.

Of course, due to the arrangement of the through hole 73, in order to prevent oil leakage, a sleeve may be arranged inside the first oil sealing cover 70, the sleeve is sleeved outside the rotating shaft 30, the plurality of buckles 72 of the first oil sealing cover 70 are clamped to the plurality of clamping grooves 13, and the plurality of through holes 73 of the first oil sealing cover 70 are covered on the end wall of the first penetrating port.

More specifically, the first seal ring 71 may be sandwiched between the first oil seal cover 70 and the end wall of the first penetration port, and the first seal ring 71 may form a seal surface between the first oil seal cover 70 and the end wall of the first penetration port, which is more effective in sealing.

It should be noted that the first oil sealing cover 70 may also be made of a material with sealing performance, such as a rubber material or a silicone material, and the sealing may be performed directly after the sealing.

Further, when the rotating end of the rotating shaft 30 can pass through the second through-connection port of the through-connection passage 11 and pass out through the mounting cavity 12 to form the other driving end, in order to prevent oil from leaking from the mounting cavity 12, a second sealing cover can be further covered on the end of the mounting cavity 12 far away from the second through-connection port, so that the second oil sealing cover 80 can seal the end of the mounting cavity 12, namely, both ends of the rotating shaft 30 in the axial direction can be sealed.

Further, in order to facilitate the assembly of the second oil seal cover 80 and the motor base 10, a connecting plate 82 may be convexly disposed on the periphery of the second oil seal cover 80, an assembly hole may be disposed on the connecting plate 82, a through hole is correspondingly disposed on the motor base 10, a screw is threaded into the assembly hole, and the tail of the screw is screwed to the motor base 10, so that the second oil seal cover 80 covers the second through port of the through channel 11.

Of course, a penetrating sleeve may be disposed in the middle of the second oil sealing cover 80, the penetrating sleeve penetrates into the second penetrating port, and the connecting plate 82 is fixedly connected to the motor base 10.

Further, a second sealing ring 81 is clamped between the second oil sealing cover 80 and the end wall of the assembly cavity 12, so that the second sealing ring 81 can be used for sealing after the second oil sealing cover 80 is covered on the end wall of the assembly cavity 12, and the sealing effect is better.

Similarly, the second oil sealing cover 80 may be made of a material with sealing performance, such as rubber or silica gel, and may be directly sealed after being sealed.

Further, a second rotating member 22 is disposed on the motor housing 20, and the second rotating member 22 can be implemented by using a fan blade, an impeller, or the like in the prior art.

Specifically, the motor housing 20 is provided with an arc surface 21 and a second rotor 22, and the first arc surface 21 is provided on an end surface of the motor housing 20 away from the motor base 10. In this way, the second rotating member 22 is driven by the motor housing 20 to rotate, and the first rotating member 31 at the rotating end of the rotating shaft 30 is engaged to realize double-end output.

In addition, because the end face of the motor housing 20 has the arc surface 21, the arc surface 21 can decompose the force when receiving the external force, and buffer the force, so that the motor housing 20 can have better strength.

It will be apparent to those skilled in the art that various other changes and modifications may be made in the above-described embodiments and concepts and all such changes and modifications are intended to be within the scope of the appended claims.

Claims

1. A double-end motor is characterized by comprising,

The motor shell is internally provided with an installation cavity, a magnet ring, a coil assembly and a rotating shaft, wherein the magnet ring is installed in the installation cavity and connected with the motor shell; the coil assembly penetrates through the magnet ring; the coil assembly is sleeved on the outer wall of the cross-connecting channel and fixed with the cross-connecting channel; one end of the rotating shaft penetrates into the cross-connecting channel through the first cross-connecting port and forms a rotating end; the other end of the rotating shaft extends out of the first penetrating port and is fixed with the motor shell; the rotating end penetrates out of the second penetrating port and is pivoted in the assembling cavity so as to be matched with the inner wall of the assembling cavity at intervals; the part of the rotating end penetrating into the penetrating channel is pivoted to the penetrating channel through a bearing.

2. The double-ended electric motor as claimed in claim 1, wherein the portion of the rotating end extending into the assembly chamber is provided with a stopper piece for abutting against both end walls of the assembly chamber.

3. The double-ended electric motor as claimed in claim 2, wherein a portion of the outer surface of said rotating end extending into said mounting cavity is provided with an annular groove; the limiting piece is connected in the annular groove in a clamping mode.

4. The double-ended electric motor of claim 1, wherein the rotating end extends from an end of the mounting cavity distal from the second feedthrough port.

5. The double-ended electric machine according to claim 4, wherein the portion of the rotating end protruding from the end of the assembly cavity remote from the second feedthrough opening is provided with a spring pin; the elastic pin is used for being clamped with the first rotating piece.

6. The double-ended electric machine of any of claims 1-5, wherein the outer periphery of the first oil seal cover is provided with a snap; the outer wall of the cross-connecting channel is provided with a clamping groove; the buckle is clamped in the clamping groove so that the first oil sealing cover is sealed at the first penetrating port.

7. The double-ended motor of claim 6, wherein a plurality of said snaps are provided, said plurality of snaps being circumferentially spaced around a central axis of said first oil seal cap; a plurality of clamping grooves are formed; the plurality of buckles are clamped in the plurality of clamping grooves.

8. The double-ended electric machine of claim 6, wherein the first oil seal cover is provided with a plurality of through holes; a plurality of buckle settings are located to a plurality of through-holes one-to-one.

9. The double-ended electric machine according to any of claims 1-5, wherein the end of the assembly chamber remote from the second feedthrough opening is capped with a second sealing cap; and a connecting plate is convexly arranged on the periphery of the second oil seal cover and fixedly connected to the motor base through screws.

10. A double ended electric motor as claimed in any of claims 1 to 5, wherein the motor housing is provided with an arcuate surface and the second rotatable member, the arcuate surface being provided on an end face of the motor housing remote from the base of the motor.