CN115549362A - End cover assembly structure and permanent magnet synchronous motor comprising same - Google Patents
End cover assembly structure and permanent magnet synchronous motor comprising same Download PDFInfo
- Publication number
- CN115549362A CN115549362A CN202211368033.2A CN202211368033A CN115549362A CN 115549362 A CN115549362 A CN 115549362A CN 202211368033 A CN202211368033 A CN 202211368033A CN 115549362 A CN115549362 A CN 115549362A
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- Prior art keywords
- bearing
- hole
- end cover
- end cap
- cover body
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
-
- 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
- H02K5/15—Mounting arrangements for bearing-shields or end plates
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses an end cover assembly structure and a permanent magnet synchronous motor comprising the same, and relates to the technical field of motors, and the end cover assembly structure comprises the following components: the end cover body and the bearing blocking piece; the center of the end cover body is provided with a rotating shaft through hole, one side of the end cover body is formed with a bearing accommodating hole, the bearing accommodating hole and the rotating shaft through hole are coaxially arranged and communicated, the bottom of the bearing accommodating hole is provided with a step surface, the step surface is used for supporting the outer ring of a bearing in the bearing accommodating hole, the end cover body on the outer peripheral side of the bearing accommodating hole is provided with a plurality of threaded holes, the outer peripheral side of the end cover body is provided with a plurality of mounting holes, and the mounting holes are used for realizing the connection of the end cover body and a motor shell; the bearing separation blade is equipped with a plurality ofly, and threaded hole department installs the bearing separation blade, and the lateral wall of bearing accommodation hole all extends to one side that every bearing separation blade is close to the bearing accommodation hole for carry on spacingly to the outer lane of bearing in the bearing accommodation hole. The invention can solve the problems of poor universality, difficult installation and maintenance and poor heat dissipation of the existing end cover assembly.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an end cover assembly structure and a permanent magnet synchronous motor comprising the same.
Background
The permanent magnet synchronous motor has the advantages of high power factor, high efficiency, small current and the like, is widely applied to various industries and realizes a good energy-saving effect. The end cover of the permanent magnet synchronous motor is mainly used for placing and fixing a motor bearing and protecting the internal structure of the motor, the existing end cover component structure of the permanent magnet synchronous motor comprises an end cover, a bearing outer cover and a bearing inner cover, the end cover and the bearing outer cover of the bearing are connected together through bolts, and the bearing is fixed in an end cover cavity; secondly, when the end cover assembly is installed, the bearing inner cover is firstly placed on the motor rotor shaft, then bolt holes of the bearing inner cover are found through bolt holes of the bearing outer cover and the end cover, and the three holes are aligned and then fastened through bolts, so that the installation is troublesome and the operation is difficult; thirdly, after the end cover assembly is installed, the bearing inner cover is positioned in the motor base, and if the bearing inner cover needs to be replaced and maintained, the bearing is required to be taken down to be replaced and maintained, which is very inconvenient. Fourthly, under the shielding of the bearing outer cover, heat generated by the motor bearing in the running process is not beneficial to outward heat dissipation; in addition, when the permanent magnet synchronous motor is installed, the permanent magnet rotor is magnetic, and the traditional end cover assembly structure lacks the axial guiding and radial size limiting effects of the end cover, so that the permanent magnet rotor can be attracted to a motor stator, and the surface of the permanent magnet rotor is damaged.
Disclosure of Invention
In view of this, the present invention provides an end cover assembly structure and a permanent magnet synchronous motor including the same, which aims to solve the problems in the background art, and solve the problems of poor universality, difficult installation and maintenance, and poor heat dissipation of the existing end cover assembly.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, the present invention provides an end cap assembly structure comprising: the end cover body and the bearing baffle plate;
the center of the end cover body is provided with a rotating shaft through hole, one side of the end cover body is formed with a bearing accommodating hole, the bearing accommodating hole and the rotating shaft through hole are coaxially arranged and communicated, the bottom of the bearing accommodating hole is provided with a step surface, the step surface is used for supporting an outer ring of a bearing in the bearing accommodating hole, the end cover body on the outer circumferential side of the bearing accommodating hole is provided with a plurality of threaded holes, the outer circumferential side of the end cover body is provided with a plurality of mounting holes, and the mounting holes are used for realizing the connection of the end cover body and a motor shell;
the bearing separation blade is equipped with a plurality ofly, every threaded hole department installs one respectively the bearing separation blade, every one side that the bearing separation blade is close to the bearing accommodation hole all extends the lateral wall of bearing accommodation hole, is used for right the outer lane of bearing in the bearing accommodation hole carries on spacingly.
Furthermore, a plurality of concave table surfaces are arranged on the outer periphery side of the bearing accommodating hole, one side, close to the bearing accommodating hole, of each concave table surface extends to the inner wall of the bearing accommodating hole, the concave table surfaces are distributed in an annular array mode according to the axis of the bearing accommodating hole, and the threaded holes are formed in the concave table surfaces.
Further, this end cover subassembly structure still includes the uide bushing, the uide bushing setting is in the mounting hole.
Furthermore, the guide sleeve comprises a first cylindrical section and a second cylindrical section which are coaxially arranged, a guide hole of the guide sleeve is formed in the axis of the first cylindrical section and the axis of the second cylindrical section, the diameter of the second cylindrical section is smaller than that of the first cylindrical section, the second cylindrical section is in interference fit with the mounting hole, and the end face of the first cylindrical section abuts against the end cover body.
Furthermore, the central point of end cover body all is provided with the boss in its both sides, pivot through-hole and bearing accommodation hole all set up the central point of boss puts.
Furthermore, a reinforcing rib is arranged between the lug boss and the edge of the end cover body.
Furthermore, a plurality of lugs are arranged at the edge of the end cover body and are integrally formed with the end cover body, the lugs are arranged in an annular array along the axis of the end cover body, and the mounting holes are formed in the lugs.
Further, a protruding lip is formed on the edge of one side, opposite to the side where the bearing accommodating hole is formed, of the end cover body.
On the other hand, the invention also provides a permanent magnet synchronous motor which adopts the end cover component structure.
According to the technical scheme, compared with the prior art, the end cover assembly structure and the permanent magnet synchronous motor comprising the same are provided, the bearing accommodating hole is formed in one side of the end cover body, the bearing blocking piece is arranged on the outer peripheral side of the bearing accommodating hole, the bearing can be limited in the bearing accommodating hole through the bearing blocking piece, the traditional combined structure of the end cover, the bearing inner cover and the bearing outer cover is replaced, the inconvenience that the assembly can be carried out only when three bolt mounting holes of the bearing inner cover, the bearing outer cover and the end cover are aligned at the same time during installation is solved, meanwhile, the structure of the bearing inner cover is omitted, parts are reduced, and the cost is saved; meanwhile, only the outer ring of the bearing is blocked by the bearing blocking sheet, so that the bearing is more beneficial to heat exchange with the outside in the motor operation process, the heat dissipation performance is good, and meanwhile, a fan at the tail end of the motor can also directly blow to the bearing, so that the temperature of the bearing is greatly reduced, and the service life of the bearing is prolonged; this end cover subassembly structure does not have independent bearing inner cup, has solved traditional end cover subassembly installation back, and the bearing inner cup is in the inside of motor frame, if need to change and maintain the bearing inner cup, then will take off the inconvenience that could change and maintain with the bearing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view of an end cap assembly structure provided by the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken in the direction A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a perspective view of the end cap assembly construction provided by the present invention;
FIG. 4 is a schematic structural view of a guide sleeve provided in the present invention;
FIG. 5 is a cross-sectional view of the end cap assembly structure provided with a bearing according to the present invention.
Wherein: 1 is an end cover body; 2 is a bearing block; 3 is a through hole of the rotating shaft; 4 is a bearing accommodating hole; 5 is a step surface; 6 is a concave table surface; 7 is a guide sleeve; 71 is a first cylindrical section; 71 is a second cylindrical section; 8 is a guide hole; 9 is a reinforcing rib; 10 is a lug; 11 is a convex lip; 12 is a bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In one aspect, referring to fig. 1-3 and 5, an embodiment of the present invention discloses an end cap assembly structure, including: the end cover comprises an end cover body 1 and a bearing baffle 2;
the center of the end cover body 1 is provided with a rotating shaft through hole 3, one side of the end cover body 1 is formed with a bearing accommodating hole 4, the bearing accommodating hole 4 and the rotating shaft through hole 3 are coaxially arranged and communicated, the bottom of the bearing accommodating hole 4 is provided with a step surface 5, the step surface 5 is used for supporting the outer ring of a bearing 12 in the bearing accommodating hole 4, the end cover body 1 on the outer circumferential side of the bearing accommodating hole 4 is provided with a plurality of threaded holes, the outer circumferential side of the end cover body 1 is provided with a plurality of mounting holes, and the mounting holes are used for realizing the connection of the end cover body 1 and a motor shell;
bearing separation blade 2 is equipped with a plurality ofly, and one bearing separation blade 2 is installed respectively to every screw hole department, and the lateral wall of bearing accommodation hole 4 all extends to one side that every bearing separation blade 2 is close to bearing accommodation hole 4 for carry on spacingly to the outer lane of bearing 12 in the bearing accommodation hole 4.
It should be noted that: the end cover assembly structure is arranged at one end of a permanent magnet synchronous motor, the bottom of a bearing accommodating hole 4 is set to be a step surface 5, the step surface 5 and a bearing blocking piece 2 can limit a bearing 12 in the bearing accommodating hole 4, and an outer ring of the bearing 12 is respectively contacted with the step surface 5 and the bearing blocking piece 2 at the bottom of the bearing accommodating hole 4, so that the outer ring of the bearing is fixed, and meanwhile, an inner ring of the bearing 12 can relatively rotate relative to the outer ring of the bearing 12; meanwhile, in the motor operation process, the bearing 12 is more beneficial to heat exchange with the outside, the heat radiation performance is good, and meanwhile, a fan at the tail end of the motor can also directly blow to the bearing 12, so that the temperature of the bearing 12 is greatly reduced, and the service life of the bearing 12 is prolonged; and this end cover subassembly structure has solved the inconvenience when the three bolt mounting hole of bearing inner cup, bearing enclosing cover and end cover aligns simultaneously just can assemble when the integrated configuration installation of traditional end cover, bearing inner cup and bearing enclosing cover, does not have bearing inner cup structure simultaneously, has reduced the part, has practiced thrift the cost.
According to some embodiments of the present invention, it is preferable that the outer peripheral side of the bearing receiving hole 4 is provided with a plurality of recessed land surfaces 6, a side of each recessed land surface 6 adjacent to the bearing receiving hole 4 extends to an inner wall of the bearing receiving hole 4, the plurality of recessed land surfaces 6 are arranged in an annular array with respect to an axis of the bearing receiving hole 4, and the threaded holes are provided on the recessed land surfaces 6. The bearing baffle plate 2 can be installed on the concave table surface 6 by forming the concave table surfaces 6 on the outer peripheral side of the end cover body 1; specifically, the thickness of the bearing blocking sheet 2 is equal to the height of the concave mesa 6, the concave mesa 6 is a semicircular structure, the bearing blocking sheet 2 is preferably in a circular gasket shape, and by installing the bearing blocking sheet 2 at the position of the threaded hole on the semicircular concave mesa 6, one side of the circular gasket-shaped bearing blocking sheet 2 close to the bearing accommodating hole 4 can be made to extend out and be pressed on the outer ring of the bearing 12.
Referring to fig. 4, according to some embodiments of the present invention, the end cap assembly structure further includes a guide sleeve 7, the guide sleeve 7 being disposed within the mounting hole. Specifically, the guide sleeve 7 comprises a first cylindrical section 71 and a second cylindrical section 72 which are coaxially arranged, the guide hole 8 of the guide sleeve 7 is arranged on the axis of the first cylindrical section 71 and the axis of the second cylindrical section 72, the diameter of the second cylindrical section 72 is smaller than that of the first cylindrical section 71, the second cylindrical section 72 is in interference fit with the mounting hole, and the end face of the first cylindrical section 71 abuts against the end cover body 1. The guide sleeve 7 is made of polyurethane materials, and through the arrangement of the guide sleeve 7, the problem that the surface of the permanent magnet motor rotor is damaged due to the fact that the permanent magnet motor rotor and the motor stator are sucked by mistake in the permanent magnet rotor assembling process can be solved.
In the present embodiment, it is preferable that the center position of the end cover body 1 is provided with bosses at both sides thereof, and the rotation shaft through hole 3 and the bearing receiving hole 4 are both provided at the center positions of the bosses. Specifically, a reinforcing rib 9 is arranged between the boss and the edge of the end cover body 1. Through the setting of boss, can provide sufficient space for setting up bearing accommodation hole 4, through the setting of strengthening rib 9, can increase the self intensity of end cover body 1.
According to some embodiments of the present invention, the edge position of the end cover body 1 is provided with a lug 10, the lug 10 is integrally formed with the end cover body 1, the lug 10 is provided with a plurality of lugs 10, the plurality of lugs 10 are arranged in an annular array around the axis of the end cover body 1, and the mounting holes are arranged on the lug 10. Specifically, end cover body 1 is circular structure, and lug 10 is provided with four, is provided with two mounting holes on every lug 10, through the setting of two mounting holes, is taking out the back with this end cover subassembly structural mounting on the motor casing, as the lead screw in one of them uide bushing 7, the lead screw in another uide bushing 8 still plays the restriction effect on this angle of end cover body 1, is convenient for improve the installation accuracy of end cover body 1 and motor casing.
According to some embodiments of the invention, the side of the end cap body 1 opposite to where the bearing receiving hole 4 is provided is formed with a raised lip 11 at the edge. Through the setting of protruding lip 11, can make protruding lip 11 can stretch into the inside of motor casing in assembling process, the stability and the fastness of installation between improvement end cover body 1 and the motor casing are improved to the outward flange of protruding lip 11 and the inside cooperation of motor casing.
On the other hand, the invention also provides a permanent magnet synchronous motor which adopts the end cover component structure.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An end cap assembly structure, comprising: the end cover body and the bearing baffle plate;
the center of the end cover body is provided with a rotating shaft through hole, one side of the end cover body is formed with a bearing accommodating hole, the bearing accommodating hole and the rotating shaft through hole are coaxially arranged and communicated, the bottom of the bearing accommodating hole is provided with a step surface, the step surface is used for supporting an outer ring of a bearing in the bearing accommodating hole, the end cover body on the outer circumferential side of the bearing accommodating hole is provided with a plurality of threaded holes, the outer circumferential side of the end cover body is provided with a plurality of mounting holes, and the mounting holes are used for realizing the connection of the end cover body and a motor shell;
the bearing separation blade is equipped with a plurality ofly, every threaded hole department installs one respectively the bearing separation blade, every one side that the bearing separation blade is close to the bearing accommodation hole all extends the lateral wall of bearing accommodation hole, is used for right the outer lane of bearing carries on spacingly in the bearing accommodation hole.
2. An end cap assembly structure according to claim 1, wherein the outer peripheral side of the bearing receiving hole is provided with a plurality of recessed lands, one side of each recessed land adjacent to the bearing receiving hole extends to an inner wall of the bearing receiving hole, the plurality of recessed lands are arranged in an annular array about an axis of the bearing receiving hole, and the threaded holes are provided in the recessed lands.
3. The end cap assembly structure of claim 1, further comprising a guide sleeve disposed within the mounting hole.
4. The end cap assembly structure of claim 3, wherein the guide sleeve comprises a first cylindrical section and a second cylindrical section which are coaxially arranged, the guide hole of the guide sleeve is arranged on the axis of the first cylindrical section and the axis of the second cylindrical section, the diameter of the second cylindrical section is smaller than that of the first cylindrical section, the second cylindrical section is in interference fit with the mounting hole, and the end face of the first cylindrical section abuts against the end cap body.
5. An end cap assembly structure according to claim 1, wherein the center of the end cap body is provided with bosses at both sides thereof, and the rotation shaft through-hole and the bearing receiving hole are provided at the center of the bosses.
6. The end cap assembly structure of claim 5, wherein a reinforcing rib is disposed between the boss and an edge of the end cap body.
7. An end cap assembly structure according to claim 1, wherein the edge of the end cap body is provided with a lug which is integrally formed with the end cap body, the lug is provided in plural, the plural lugs are arranged in an annular array with respect to the axis of the end cap body, and the mounting hole is provided in the lug.
8. An end cap assembly structure according to claim 1, wherein the end cap body is formed with a raised lip at an edge on a side opposite the bearing receiving bore.
9. A permanent magnet synchronous motor, characterized in that the permanent magnet synchronous motor adopts the end cover component structure of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211368033.2A CN115549362A (en) | 2022-11-03 | 2022-11-03 | End cover assembly structure and permanent magnet synchronous motor comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211368033.2A CN115549362A (en) | 2022-11-03 | 2022-11-03 | End cover assembly structure and permanent magnet synchronous motor comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115549362A true CN115549362A (en) | 2022-12-30 |
Family
ID=84720478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211368033.2A Pending CN115549362A (en) | 2022-11-03 | 2022-11-03 | End cover assembly structure and permanent magnet synchronous motor comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115549362A (en) |
-
2022
- 2022-11-03 CN CN202211368033.2A patent/CN115549362A/en active Pending
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