CN117498609B - Shaded pole motor structure and assembly process thereof - Google Patents
Shaded pole motor structure and assembly process thereof Download PDFInfo
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- CN117498609B CN117498609B CN202311784212.9A CN202311784212A CN117498609B CN 117498609 B CN117498609 B CN 117498609B CN 202311784212 A CN202311784212 A CN 202311784212A CN 117498609 B CN117498609 B CN 117498609B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 23
- 239000000428 dust Substances 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 15
- 238000005096 rolling process Methods 0.000 description 9
- 230000017525 heat dissipation Effects 0.000 description 6
- 208000035874 Excoriation Diseases 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000013021 overheating Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- 238000009776 industrial production Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The application relates to a shaded pole motor structure and an assembly process thereof, and relates to the technical field of motor equipment, wherein the shaded pole motor structure comprises a rotor assembly, a bearing assembly, a stator assembly and a supporting shell for installing the stator assembly, the rotor assembly comprises a rotating shaft, the bearing assembly comprises an inner bearing and an outer bearing which are sleeved on the rotating shaft, and balls are arranged between the inner bearing and the outer bearing; the outer wall of one side of the supporting shell is connected with the mounting shell, and the inner wall of the supporting shell is provided with a mounting hole communicated with the inside of the mounting shell; the outer bearings comprise a first outer bearing and a second outer bearing which are respectively positioned at two sides of the ball and are abutted against the ball; the mounting shell is internally provided with a tightening assembly for pushing the first outer bearing and the second outer bearing to be close to each other. When the clearance between this application bearing and the ball increases, the tight subassembly promotes first outer bearing and second outer bearing and is close to each other, makes the clearance between bearing and the ball reduce, reduces the ball and beats when rotating between inner bearing and outer bearing to reduce the effect that the motor sent the risk of noise to a certain extent.
Description
Technical Field
The application relates to the technical field of motor equipment, in particular to a shaded pole motor structure and an assembly process thereof.
Background
The shaded pole motor is a common direct current motor, also called a collector motor or an external armature motor, and is characterized in that an armature is positioned inside a stator, and a shaded pole covers the outside of the armature and a permanent magnet. The shaded pole motor has the advantages of simple structure, mature manufacturing process, reliable operation, long service life and the like, and is widely applied to industrial production and household appliances such as fans, washing machines, agitators, dust collectors and the like.
At present, a rolling bearing is generally arranged in a motor, a motor shaft is arranged in the rolling bearing in a penetrating way, balls are arranged in the rolling bearing, gaps are generally reserved between the balls and the inner ring and the outer ring of the rolling bearing, and therefore the balls and the inner ring and the outer ring of the rolling bearing are not easy to be blocked when the rolling bearing runs.
According to the related technology, the bearings and the balls inside the bearings are worn after the motor is used for a long time, so that gaps between the balls and the inner ring and the outer ring of the rolling bearing are enlarged, and further, the rolling steel balls are easier to jump when rotating around the inner ring of the rolling bearing, so that noise can be generated when the motor works, and the working environment is influenced.
Disclosure of Invention
In order to reduce the risk of noise generated after the motor is used for a long time, the application provides a shaded pole motor structure and an assembly process thereof.
The application provides a shaded pole motor structure adopts following technical scheme:
the shaded pole motor structure comprises a rotor assembly, a bearing assembly, a stator assembly and a supporting shell for installing the stator assembly, wherein the rotor assembly comprises a rotating shaft, the bearing assembly is sleeved on the rotating shaft and comprises an inner bearing and an outer bearing, and balls are arranged between the inner bearing and the outer bearing; one side of the supporting shell, which is far away from the stator assembly, is connected with a mounting shell for mounting the bearing assembly, and the inner wall of one side of the supporting shell is provided with a mounting hole communicated with the inside of the mounting shell; the outer bearings comprise a first outer bearing and a second outer bearing, a gap exists between the first outer bearing and the second outer bearing, the ball is positioned between the first outer bearing and the second outer bearing, one sides of the first outer bearing and the second outer bearing, which are close to the ball, are provided with inclined planes, and the ball is abutted with the inclined planes on the first outer bearing and the second outer bearing; the installation shell is internally provided with a tightening assembly for pushing the first outer bearing and the second outer bearing to be close to each other, and the ball is pushed to be close to the center of the rotating shaft through an inclined plane when the first outer bearing and the second outer bearing are close to each other.
Through adopting above-mentioned technical scheme, after the shaded pole motor works for a period, the inside ball of bearing, and the interior bearing and the outer bearing of ball contact take place wearing and tearing, arouse the clearance increase between bearing and the ball, the work of tight subassembly is transferred afterwards, tight subassembly promotes first outer bearing and the mutual being close to of second outer bearing, clearance between first outer bearing and the second outer bearing reduces, and then make the clearance between bearing and the ball reduce, the run-out when reducing the ball between interior bearing and outer bearing, thereby reduce the motor to a certain extent and use the back bearing wearing and tearing to lead to the risk of sending the noise for a long time.
Optionally, the tightening assembly includes a first tightening member and a second tightening member, the first tightening member is located between the inner wall of the mounting shell and the first outer bearing, and the second tightening member is located between the outer wall of the side of the supporting shell facing away from the stator assembly and the second outer bearing.
By adopting the technical scheme, after the balls in the bearings and the inner bearings and the outer bearings which are contacted with the balls are worn, the first tightening piece and the second tightening piece respectively push the first outer bearing and the second outer bearing to be close to the ball in two directions, and then the balls are simultaneously abutted with the inner bearings and the first outer bearings and the second outer bearings again; meanwhile, the first tightening piece and the second tightening piece provide certain pretightening force for the first outer bearing and the second outer bearing, so that sliding possibly generated when the outer bearing is subjected to axial or radial load is reduced, friction between the outer bearing and the balls is reduced, and the risk of abrasion between the balls and the outer bearing is reduced to a certain extent.
Optionally, the plane that the inner bearing is located is perpendicular to the outer wall of pivot center pin is connected with the pretension piece, the pretension piece is located the installation shell and pretension piece is used for providing certain pretightning force for the inner bearing.
Through adopting above-mentioned technical scheme, when the ball rotates between inner bearing and outer bearing, the pretension piece provides certain pretightning force for the inner bearing, reduces the slip that the inner bearing probably can produce when receiving axial or radial load, and then reduces the friction between inner bearing and the ball to reduce the risk that ball and inner bearing take place wearing and tearing.
Optionally, the pretension piece includes annular pretension board and elastic component, annular pretension board cover is established in the pivot, elastic component one end is connected with annular pretension board just to one side of inner bearing and elastic component other end is connected with inner bearing just to one side of annular pretension board.
Through adopting above-mentioned technical scheme, during the motor work, the pivot rotates around self axis, and the pivot drives the pretension piece and rotates as the center pin of rotation center pin of pivot together with the inner bearing simultaneously, when the bearing receives axial or radial load in the rotation process, and the elastic component that is located between pretension board and the inner bearing produces pressure to the inner bearing to provide certain pretightning force for the inner bearing.
Optionally, the annular pretension board back is offered the radiating groove of intercommunication annular pretension board opposite side from bearing assembly's one side, be equipped with the fin in the radiating groove, the mounting shell just has offered the intercommunication mounting shell outer wall louvre to the one side inner wall of annular pretension board.
Through adopting above-mentioned technical scheme, the pivot rotates the in-process around self axis, and the pivot drives the ball and takes place to rotate and then produce certain heat and pass through the elastic component with heat and transmit annular pretension board between inner bearing and the outer bearing, and annular pretension board drives the fin and rotates and make the fin constantly contact with the air in the rotation in-process afterwards, and the fin passes through the louvre in with the heat transfer that bearing assembly department produced to the air to reduce the inside cooling of bearing to a certain extent, reduced the bearing overheated risk that leads to in the bearing lubricating oil to deteriorate, frictional force increases.
Optionally, a filter screen for filtering external dust is arranged in the radiating hole.
Through adopting above-mentioned technical scheme, when the fin rotates in the heat dissipation groove, the filter screen filters the air that gets into the installation shell to the risk of dust in the air and bearing contact has been reduced.
Optionally, the pivot outer wall is equipped with the joint groove, the outer wall that annular pretension board is in the inner ring is connected with the joint piece, annular pretension board passes through joint groove and joint piece and pivot formation joint.
Through adopting above-mentioned technical scheme, pivot around self axis pivoted in-process, annular pretension board passes through joint groove and joint piece and forms the joint with the pivot to make the pivot drive the center pin of pretension piece and rotate together as the axis of rotation.
Optionally, the annular pre-tightening plate comprises an inner annular pre-tightening plate and an outer annular pre-tightening plate, the size of the annular pre-tightening plate is larger than the cross section size of the inner bearing, and the inner bearing and the outer bearing are both positioned between the inner annular pre-tightening plate and the outer annular pre-tightening plate.
Through adopting above-mentioned technical scheme, install the bearing in the pivot after, establish interior annular pretension board cover in the pivot earlier and with the pivot joint, establish bearing assembly cover in the pivot again, establish outer annular pretension board cover in the pivot and with the pivot joint afterwards, interior annular pretension board and outer annular pretension board carry out spacingly to interior bearing and outer bearing, make the follow-up installation of motor more smooth.
Optionally, guiding groove and ring channel have still been seted up to the pivot outer wall, the one end outer wall of pivot is linked together to the guiding groove direction of seting up and be parallel to pivot extending direction and guiding groove, the one end outer wall laminating that direction perpendicular to pivot extending direction and ring channel tank bottom and joint piece deviate from annular pretension board is seted up to the ring channel, ring channel and guiding groove intercommunication and ring channel deviate from one side inner wall intercommunication joint groove of inner bearing.
Through adopting above-mentioned technical scheme, when installing annular pretension board, align joint piece and guide way, promote annular pretension board then until the joint piece is located the ring channel, secondly rotate annular pretension board and make the joint piece be located joint groove notch, loosen annular pretension board afterwards, annular pretension board removes to the direction of keeping away from the inner bearing under the effect of elastic component, pushes into the joint groove with the joint piece in, accomplishes the joint of joint piece and pivot.
The assembly process of the shaded pole motor adopts the following technical scheme:
an assembling process of a shaded pole motor comprises the following steps:
s1, installing the stator assembly in a supporting shell in advance;
s2, after the rotor assembly is arranged on the rotating shaft, two ends of the rotating shaft extend out of the outer wall of the installation shell from the installation holes respectively, and bearing assemblies are arranged at two ends of the rotating shaft;
s3, after the tightening assemblies are arranged on two sides of the outer bearing, the installation shell is connected with the support shell.
Through adopting above-mentioned technical scheme, during the installation motor, install stator module in advance in supporting the shell to establish rotor subassembly and bearing assembly cover in the pivot and put into the supporting shell in the back together, the mounting hole of supporting shell outer wall offered is fixed a position the pivot, and then operating personnel assemble tight subassembly and installation shell again, reduced the degree of difficulty of motor installation to a certain extent.
In summary, the present application includes at least one of the following beneficial technical effects:
1. after the shaded pole motor works for a period of time, the balls in the bearings, the inner bearings and the outer bearings which are contacted with the balls are worn, so that gaps between the bearings and the balls are increased, then the tightening assembly works and pushes the first outer bearing and the second outer bearing to be close to each other, the gaps between the first outer bearing and the second outer bearing are reduced, the gaps between the bearings and the balls are reduced, and the runout of the balls during rotation between the inner bearings and the outer bearings is reduced, so that the risk of noise emission caused by the abrasion of the bearings after the motor is used for a long time is reduced to a certain extent;
2. when the ball rotates between the inner bearing and the outer bearing, the pre-tightening piece provides a certain pre-tightening force for the inner bearing, so that sliding possibly generated when the inner bearing is subjected to axial or radial load is reduced, friction between the inner bearing and the ball is further reduced, and the risk of abrasion between the ball and the inner bearing is further reduced;
3. in the rotating process of the rotating shaft around the axis of the rotating shaft, the rotating shaft drives the balls to rotate between the inner bearing and the outer bearing so as to generate certain heat and transfer the heat to the annular pre-tightening plate through the elastic piece, then the annular pre-tightening plate drives the cooling fin to rotate and enable the cooling fin to continuously contact with air in the rotating process, and the cooling fin transfers the heat generated at the bearing assembly to the air through the cooling hole, so that the temperature of the inside of the bearing is reduced to a certain extent, and the risk that lubricating oil in the bearing is deteriorated and friction force is increased due to overheating of the bearing is reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a shaded pole motor according to an embodiment of the present application.
Fig. 2 is a schematic cross-sectional view of a shaded pole motor structure according to an embodiment of the present application.
Fig. 3 is an enlarged partial schematic view of the portion a in fig. 2.
Fig. 4 is a schematic view of a part of an exploded structure of a shaded pole motor structure according to an embodiment of the present application.
In the figure, 1, a rotor assembly; 11. a rotating shaft; 111. a clamping groove; 112. a guide groove; 113. an annular groove; 2. a bearing assembly; 21. an inner bearing; 22. an outer bearing; 221. a first outer bearing; 222. a second outer bearing; 223. an inclined plane; 23. a ball; 3. a stator assembly; 4. a support case; 41. a mounting hole; 5. a tightening assembly; 51. a first tightening member; 52. a second tightening member; 6. a pretension member; 61. an annular pre-tightening plate; 611. a heat sink; 612. a heat sink; 613. a clamping piece; 614. an inner annular pre-tightening plate; 615. an outer annular pre-tightening plate; 62. an elastic member; 63. an annular abutment plate; 7. a mounting shell; 71. a heat radiation hole; 72. and (3) a filter screen.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a shaded pole motor structure. Referring to fig. 1 and 2, a shaded pole motor construction comprises a rotor assembly 1, a bearing assembly 2, a stator assembly 3, and a support housing 4 for mounting the stator assembly 3; the rotor assembly 1 comprises a rotating shaft 11, the bearing assembly 2 is sleeved on the rotating shaft 11, the bearing assembly 2 comprises an inner bearing 21 and an outer bearing 22, the outer bearing 22 is sleeved outside the inner bearing 21, balls 23 are arranged between the inner bearing 21 and the outer bearing 22, and the outer wall of the plane where the inner bearing 21 is located, which is perpendicular to the central shaft of the rotating shaft 11, is connected with the pre-tightening piece 6.
Referring to fig. 2 and 3, one side of the supporting shell 4 far away from the stator assembly 3 is connected with a mounting shell 7, and inner walls of two opposite sides of the supporting shell 4 are provided with mounting holes 41 communicated with the inside of the mounting shell 7, the mounting shell 7 is used for mounting the bearing assembly 2 and the pretensioner 6, and two ends of the rotating shaft 11 protrude from the outer wall of the supporting shell 4 into the mounting shell 7 through the mounting holes 41; the outer bearing 22 comprises a first outer bearing 221 and a second outer bearing 222, a gap exists between the first outer bearing 221 and the second outer bearing 222, the ball 23 is positioned between the first outer bearing 221 and the second outer bearing 222, one side of the first outer bearing 221 and the second outer bearing 222, which is close to the ball 23, is provided with an inclined surface 223, and the ball 23 is abutted against the inclined surface 223; the mounting housing 7 is provided therein with a tightening assembly 5 for pushing the first outer bearing 221 and the second outer bearing 222 toward each other, and the balls 23 are pushed toward the center of the rotating shaft 11 by the inclined surfaces 223 when the first outer bearing 221 and the second outer bearing 222 are moved toward each other.
After the shaded pole motor works for a period of time, the balls 23 in the bearings and the inner bearings 21 and the outer bearings 22 contacted with the balls 23 are worn, so that the gap between the bearings and the balls 23 is increased, then the tightening assembly 5 works, the tightening assembly 5 pushes the first outer bearings 221 and the second outer bearings 222 to be close to each other, the gap between the first outer bearings 221 and the second outer bearings 222 is reduced, the balls 23 are pushed to be close to the center of the rotating shaft 11 through the inclined surfaces 223 when the first outer bearings 221 and the second outer bearings 222 are close to each other, the risk of overlarge gap between the bearings and the balls 23 is further reduced, and the jump of the balls 23 when the balls 21 and the outer bearings 22 rotate is reduced, so that the bearing wear is reduced to a certain extent after the motor is used for a long time, and the risk of noise is generated due to the increase of the gap between the balls 23 and the inner bearings 22; meanwhile, when the balls 23 rotate between the inner bearing 21 and the outer bearing 22, the pretension piece 6 provides a certain pretension force for the inner bearing 21, so that sliding possibly generated when the inner bearing 21 is subjected to axial or radial load is reduced, friction between the inner bearing 21 and the balls 23 is further reduced, and the risk of abrasion between the balls 23 and the inner bearing 21 is reduced.
Referring to fig. 2 and 3, the tightening assembly 5 includes a first tightening member 51 and a second tightening member 52, the first tightening member 51 is located between the inner wall of the mounting case 7 and the first outer bearing 221, and the second tightening member 52 is located between the outer wall of the side of the support case 4 facing away from the stator assembly 3 and the second outer bearing 222; the first tightening member 51 and the second tightening member 52 in this embodiment are wave gaskets, and may be polyurethane gaskets in other embodiments, where one side of the wave gasket between the inner wall of the mounting case 7 and the first outer bearing 221 is abutted against the inner wall of the mounting case 7, and the other side is abutted against one side of the first outer bearing 221, which is away from the ball 23, and one side of the wave gasket between the outer wall of the side of the supporting case 4, which is away from the stator assembly 3, and the second outer bearing 222 is abutted against the outer wall of the supporting case 4, and the other side is abutted against one side of the second outer bearing 222, which is away from the ball 23.
The wave washer has better elasticity, when the ball 23 in the bearing and the inner bearing 21 and the outer bearing 22 which are contacted with the ball 23 are worn to cause the gap between the ball 23 and the outer bearing 22 to be increased, the wave washer between the inner wall of the installation shell 7 and the first outer bearing 221 and the wave washer between the outer wall of the side of the support shell 4, which is away from the stator assembly 3, and the second outer bearing 222 respectively push the first outer bearing 221 and the second outer bearing 222 to be close to the ball 23 in two directions, and then the ball 23 is simultaneously abutted against the inner bearing 21 and the first outer bearing 221 and the second outer bearing 222 again; meanwhile, the wave washer has certain elasticity, so that the risk of jamming of the balls 23 when rotating between the inner bearing 21 and the outer bearing 22 is reduced.
Referring to fig. 3 and 4, the pre-tightening member 6 includes an annular pre-tightening plate 61 and an elastic member 62, the inner ring surface of the annular pre-tightening plate 61 facing the rotating shaft 11 is connected with a clamping piece 613, the outer wall of the rotating shaft 11 is provided with a guide groove 112 and an annular groove 113, the guide groove 112 is provided with a direction parallel to the extending direction of the rotating shaft 11 and is communicated with the outer wall of one end of the rotating shaft 11, the annular groove 113 is provided with a direction perpendicular to the extending direction of the rotating shaft 11 and the bottom of the annular groove 113 is attached to the outer wall of one end of the clamping piece 613 facing away from the annular pre-tightening plate 61, the annular groove 113 is communicated with the guide groove 112, and the inner wall of one side of the annular groove 113 facing away from the inner bearing 21 is provided with a clamping groove 111 matched with the clamping piece 613; the elastic member 62 in this embodiment is a spring, one end of the spring is connected to a side of the annular pre-tightening plate 61 opposite to the inner bearing 21, and the other end of the spring is connected to an annular abutting plate 63, and an outer wall of one end of the annular abutting plate 63 facing away from the spring is attached to the surface of the inner bearing 21.
When the annular pre-tightening plate 61 is installed, the clamping piece 613 is aligned with the guide groove 112, then the annular pre-tightening plate 61 is pushed until the clamping piece 613 is positioned in the annular groove 113, at the moment, the outer wall of one end of the annular abutment plate 63, which is away from the spring, is attached to the surface of the inner bearing 21, then the annular pre-tightening plate 61 is rotated to enable the clamping piece 613 to be positioned in the notch of the clamping groove 111, then the annular pre-tightening plate 61 is released, the annular pre-tightening plate 61 moves in a direction away from the inner bearing 21 under the action of the spring, the clamping piece 613 is pushed into the clamping groove 111, the clamping of the clamping piece 613 and the rotating shaft 11 is completed, and accordingly the pre-tightening piece 6 is driven to rotate together with the central shaft of the rotating shaft 11 as a rotation axis in the rotating process of the rotating shaft 11.
Referring to fig. 3 and 4, the annular pretensioning plate 61 includes an inner annular pretensioning plate 614 and an outer annular pretensioning plate 615, the annular pretensioning plate 61 is larger in size than the inner bearing 21 in cross-sectional size and both the inner bearing 21 and the outer bearing 22 are located between the inner annular pretensioning plate 614 and the outer annular pretensioning plate 615; after the rotating shaft 11 is connected with the supporting shell 4, the inner annular pre-tightening plate 614 is sleeved on the rotating shaft 11 and is clamped with the rotating shaft 11, the bearing assembly 2 is sleeved on the rotating shaft 11, the outer annular pre-tightening plate 615 is sleeved on the rotating shaft 11 and is clamped with the rotating shaft 11, and the inner annular pre-tightening plate 614 and the outer annular pre-tightening plate 615 temporarily limit the inner bearing 21 and the outer bearing 22, so that the subsequent installation of the motor is smoother.
Referring to fig. 3 and 4, a heat dissipation groove 611 communicated with the other side of the annular pre-tightening plate 61 is formed in one side, away from the bearing assembly 2, of the annular pre-tightening plate 61, a heat dissipation fin 612 is arranged in the heat dissipation groove 611, a heat dissipation hole 71 communicated with the outer wall of the mounting shell 7 is formed in the inner wall of one side, opposite to the annular pre-tightening plate 61, of the mounting shell 7, and a filter screen 72 used for filtering outside dust is arranged in the heat dissipation hole 71; in the process of rotating the rotating shaft 11 around the axis of the rotating shaft 11, the rotating shaft 11 drives the balls 23 to rotate between the inner bearing 21 and the outer bearing 22 so as to generate certain heat and transfer the heat to the annular pre-tightening plate 61 through the elastic piece 62, then the annular pre-tightening plate 61 drives the cooling fins 612 to rotate and enable the cooling fins 612 to continuously contact with air in the rotating process, and the cooling fins 612 transfer the heat generated at the bearing assembly 2 into the air through the cooling holes 71, so that the inside of the bearing assembly 2 is cooled to a certain extent, and the risk of deterioration of lubricating oil in the bearing due to overheating of the bearing assembly 2 and increase of friction is reduced; at the same time, the filter screen 72 filters the air entering the mounting shell 7 as the cooling fins 612 rotate within the cooling grooves 611, thereby reducing the risk of dust in the air coming into contact with the bearing assembly 2.
The implementation principle of the shaded pole motor structure in the embodiment of the application is as follows: after the shaded pole motor works for a period of time, the gaps between the inner bearing 21 and the outer bearing 22 and the balls 23 are increased, then the tightening assembly 5 pushes the first outer bearing 221 and the second outer bearing 222 to be close to each other, the balls 23 are pushed to be close to the center of the rotating shaft 11 through the inclined surfaces 223 when the first outer bearing 221 and the second outer bearing 222 are close to each other, so that the risk of overlarge gaps between the bearings and the balls 23 is reduced, the jumping of the balls 23 during rotation between the inner bearing 21 and the outer bearing 22 is reduced, the abrasion of the bearings after the motor is used for a long time is reduced to a certain extent, and the risk of noise emission is caused by the increased gaps between the balls 23 and the inner bearing 22 and the outer bearing 22; meanwhile, in the process of rotating the rotating shaft 11 around the axis of the rotating shaft, the annular pre-tightening plate 61 drives the cooling fins 612 to rotate and enables the cooling fins 612 to continuously contact with air in the rotating process, and the cooling fins 612 transfer heat generated at the bearing assembly 2 into the air through the cooling holes 71, so that the inside of the bearing is cooled to a certain extent.
The embodiment of the application also discloses an assembling process of the shaded pole motor. Referring to fig. 1, the method comprises the steps of:
s1, installing a stator assembly 3 in a supporting shell 4 in advance;
s2, after the rotor assembly 1 is installed on the rotating shaft 11, two ends of the rotating shaft 11 extend out of the outer wall of the installation shell 7 through the installation holes 41 respectively, and bearing assemblies 2 are installed at two ends of the rotating shaft 11;
s3, after the tightening assemblies 5 are arranged on two sides of the outer bearing 22, the installation shell 7 is connected with the support shell 4.
The implementation principle of the shaded pole motor assembly process in the embodiment of the application is as follows: when the motor is installed, the stator assembly 3 is installed in the supporting shell 4 in advance, the rotor assembly 1 and the bearing assembly 2 are sleeved on the rotating shaft 11 and are put into the supporting shell 4 together, the rotating shaft 11 is positioned through the installation holes 41 formed in the outer wall of the supporting shell 4, and then an operator assembles the tightening assembly 5 and the installation shell 7, so that the difficulty of motor installation is reduced to a certain extent.
The embodiments of this embodiment are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, in which like parts are denoted by like reference numerals. Therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (5)
1. A shaded pole motor structure, characterized in that: the novel rotor assembly comprises a rotor assembly (1), a bearing assembly (2), a stator assembly (3) and a supporting shell (4) for mounting the stator assembly (3), wherein the rotor assembly (1) comprises a rotating shaft (11), the bearing assembly (2) is sleeved on the rotating shaft (11) and comprises an inner bearing (21) and an outer bearing (22), and a ball (23) is arranged between the inner bearing (21) and the outer bearing (22); one side of the supporting shell (4) far away from the stator assembly (3) is connected with a mounting shell (7) for mounting the bearing assembly (2), and a mounting hole (41) communicated with the inside of the mounting shell (7) is formed in the inner wall of one side of the supporting shell (4); the outer bearing (22) comprises a first outer bearing (221) and a second outer bearing (222), a gap exists between the first outer bearing (221) and the second outer bearing (222), the ball (23) is positioned between the first outer bearing (221) and the second outer bearing (222), an inclined surface (223) is arranged on one side, close to the ball (23), of the first outer bearing (221) and the second outer bearing (222), and the ball (23) is abutted with the inclined surface (223); a tightening assembly (5) for pushing the first outer bearing (221) and the second outer bearing (222) to approach each other is arranged in the mounting shell (7), and when the first outer bearing (221) and the second outer bearing (222) approach each other, the ball (23) is pushed to approach the center of the rotating shaft (11) through the inclined surface (223);
the tightening assembly (5) comprises a first tightening piece (51) and a second tightening piece (52), the first tightening piece (51) is located between the inner wall of the installation shell (7) and the first outer bearing (221), the second tightening piece (52) is located between the outer wall of one side, which is away from the stator assembly (3), of the support shell (4) and the second outer bearing (222), and the first tightening piece (51) and the second tightening piece (52) are elastic;
the outer walls of two opposite sides of the inner bearing (21) are connected with pretensioning pieces (6), the pretensioning pieces (6) are positioned in the installation shell (7), and the pretensioning pieces (6) are used for providing certain pretensioning force for the inner bearing (21);
the pre-tightening piece (6) comprises an annular pre-tightening plate (61) and an elastic piece (62), the annular pre-tightening plate (61) is sleeved on the rotating shaft (11), one end of the elastic piece (62) is connected with one side, opposite to the inner bearing (21), of the annular pre-tightening plate (61), and the other end of the elastic piece (62) is connected with one side, opposite to the annular pre-tightening plate (61), of the inner bearing (21);
a radiating groove (611) communicated with the other side of the annular pre-tightening plate (61) is formed in one side, away from the bearing assembly (2), of the annular pre-tightening plate (61), radiating fins (612) are arranged in the radiating groove (611), and a radiating hole (71) communicated with the outer wall of the mounting shell (7) is formed in the inner wall of one side, opposite to the annular pre-tightening plate (61), of the mounting shell (7);
the annular pre-tightening plate (61) comprises an inner annular pre-tightening plate (614) and an outer annular pre-tightening plate (615), the size of the annular pre-tightening plate (61) is larger than the cross section size of the inner bearing (21), and the inner bearing (21) and the outer bearing (22) are both positioned between the inner annular pre-tightening plate (614) and the outer annular pre-tightening plate (615).
2. A shaded pole motor construction according to claim 1, wherein: a filter screen (72) for filtering outside dust is arranged in the radiating hole (71).
3. A shaded pole motor construction according to claim 1, wherein: the outer wall of the rotating shaft (11) is provided with a clamping groove (111), the annular pre-tightening plate (61) is connected with a clamping piece (613) opposite to the inner ring surface of the rotating shaft (11), and the annular pre-tightening plate (61) and the rotating shaft (11) form clamping through the clamping groove (111) and the clamping piece (613).
4. A shaded pole motor construction according to claim 1, wherein: the outer wall of the rotating shaft (11) is further provided with a guide groove (112) and an annular groove (113), the guide groove (112) is arranged in parallel with the extending direction of the rotating shaft (11) and is communicated with the outer wall of one end of the rotating shaft (11), the annular groove (113) is arranged in a direction perpendicular to the extending direction of the rotating shaft (11) and is attached to the outer wall of one end, deviating from the annular pre-tightening plate (61), of the clamping piece (613), and the annular groove (113) is communicated with the guide groove (112) and is communicated with the inner wall, deviating from the inner bearing (21), of one side of the annular groove (113), of the clamping groove (111).
5. A shaded pole motor assembly process applied to the shaded pole motor structure of claim 1, and comprising the following steps:
s1, installing the stator assembly (3) in a supporting shell (4) in advance;
s2, after the rotor assembly (1) is installed on the rotating shaft (11), two ends of the rotating shaft (11) extend out of the outer wall of the installation shell (7) through the installation holes (41) respectively, and bearing assemblies (2) are installed at two ends of the rotating shaft (11);
s3, after the tightening assembly (5) is installed on two sides of the outer bearing (22), the installation shell (7) is connected with the support shell (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784212.9A CN117498609B (en) | 2023-12-23 | 2023-12-23 | Shaded pole motor structure and assembly process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784212.9A CN117498609B (en) | 2023-12-23 | 2023-12-23 | Shaded pole motor structure and assembly process thereof |
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| CN117498609A CN117498609A (en) | 2024-02-02 |
| CN117498609B true CN117498609B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311784212.9A Active CN117498609B (en) | 2023-12-23 | 2023-12-23 | Shaded pole motor structure and assembly process thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005249189A (en) * | 2004-02-03 | 2005-09-15 | Nsk Ltd | Bearing device for transmission |
| DE102007056698A1 (en) * | 2007-11-24 | 2009-05-28 | Schaeffler Kg | Tensioning tool for belt drive of internal-combustion engine, has driving pin inserted into recess of working eccentric to shift eccentric in relation to bearing stud around axis in pre-tensioning swiveling position under pivoting of pin |
| CN105581847A (en) * | 2016-01-18 | 2016-05-18 | 佛山市驰康医疗器材有限公司 | Tightness-adjustable dental handpiece |
| DE102019117692A1 (en) * | 2018-07-05 | 2020-01-09 | Schaeffler Technologies AG & Co. KG | Double-row angular contact ball bearing and method for adjusting its bearing play |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9140304B2 (en) * | 2010-04-29 | 2015-09-22 | Aktiebolaget Skf | Rolling bearing arrangement |
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2023
- 2023-12-23 CN CN202311784212.9A patent/CN117498609B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005249189A (en) * | 2004-02-03 | 2005-09-15 | Nsk Ltd | Bearing device for transmission |
| DE102007056698A1 (en) * | 2007-11-24 | 2009-05-28 | Schaeffler Kg | Tensioning tool for belt drive of internal-combustion engine, has driving pin inserted into recess of working eccentric to shift eccentric in relation to bearing stud around axis in pre-tensioning swiveling position under pivoting of pin |
| CN105581847A (en) * | 2016-01-18 | 2016-05-18 | 佛山市驰康医疗器材有限公司 | Tightness-adjustable dental handpiece |
| DE102019117692A1 (en) * | 2018-07-05 | 2020-01-09 | Schaeffler Technologies AG & Co. KG | Double-row angular contact ball bearing and method for adjusting its bearing play |
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| Publication number | Publication date |
|---|---|
| CN117498609A (en) | 2024-02-02 |
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