CN210927330U - Bearing support structure of disc type motor and disc type motor - Google Patents
Bearing support structure of disc type motor and disc type motor Download PDFInfo
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- CN210927330U CN210927330U CN202020080246.5U CN202020080246U CN210927330U CN 210927330 U CN210927330 U CN 210927330U CN 202020080246 U CN202020080246 U CN 202020080246U CN 210927330 U CN210927330 U CN 210927330U
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Abstract
The utility model discloses a bearing support structure of disk motor, include: stator module, two rotor subassemblies, pivot and two bearings, stator module's internal diameter department is coaxial to be fixed with the bearing housing, the inner circle of bearing housing is equipped with step in the middle of the bearing housing and forms two bearing rooms respectively in the left and right sides, the outer lane of two bearings butt respectively in the terminal surface of step in the middle of the bearing housing, step in the middle of the pivot is equipped with in the pivot between two bearings, two rotor subassemblies all are equipped with the back of the body flange, step and other end butt in the middle of the pivot of the inner circle one end butt of two bearings in the back of the body flange that corresponds. The positioning support of the outer ring of the left bearing and the right bearing is realized by the middle step of the bearing sleeve, the positioning support of the inner ring of the two bearings is realized by the middle step of the rotating shaft and the back iron flanges of the two rotors, the positioning structure of the bearings is simplified, the bearing supporting structure is easy to process, and the difficulty of the assembling process of the motor bearing is reduced. The application also discloses a disc motor.
Description
Technical Field
The utility model relates to a motor structure designs technical field, especially relates to a disk motor and bearing support structure thereof.
Background
Compared with the traditional motor, the disc type motor has higher iron core utilization rate, higher power density and higher torque density, and is particularly suitable for occasions with strict requirements on the volume and the weight of the motor. The disc type motor mainly has four structures of a single stator and single rotor, a double stator and single rotor, a single stator and double rotors and a plurality of stators and multiple rotors.
The disc type motor with the single-stator and double-rotor structure is composed of a stator assembly, a first rotor assembly, a second rotor assembly, a rotating shaft, a first bearing, a second bearing and the like, wherein the rotating shaft is used as a power output shaft of the motor, and the two bearings provide support for the rotation of the two rotor assemblies relative to the stator assembly.
The installation location of bearing needs to satisfy certain assembly accuracy requirement to need rationally arrange, thereby guarantee that the motor has good performance and lower noise. The bearing positioning structure in the prior art has certain defects, and the assembly process is complex and the cost is high.
Therefore, how to reasonably design the positioning and supporting structure of the disc motor bearing is a technical problem which needs to be solved by the technical personnel in the field at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a bearing support structure of disk motor, this structure is easily processed to can reduce the assembly process degree of difficulty of motor bearing. Another object of the present invention is to provide a disc motor including the above bearing support structure.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a bearing support structure of a disc motor, comprising: the bearing sleeve is coaxially fixed at the inner diameter of the stator component, a middle step of the bearing sleeve is arranged in the middle of an inner ring of the bearing sleeve in a protruding mode, a first bearing chamber for installing the first bearing and a second bearing chamber for installing the second bearing are formed on the left side and the right side of the middle step of the bearing sleeve respectively, an outer ring of the first bearing and an outer ring of the second bearing are abutted to the end face of the middle step of the bearing sleeve respectively, the rotating shaft is provided with a middle step of the rotating shaft located between the first bearing and the second bearing, a first back iron flange is coaxially fixed on one side, facing the first bearing, of the rotor back iron of the first rotor component, a second back iron flange is coaxially fixed on one side, facing the second bearing, of the rotor back iron of the second rotor component, one end of the inner ring of the first bearing is abutted against the middle step of the rotating shaft, the other end of the inner ring of the second bearing is abutted against the second back iron flange, and one end of the inner ring of the first bearing is abutted against the middle step of the rotating shaft, and the other end of the inner ring of the second bearing is abutted against the second back iron flange.
Preferably, the first back iron flange and the rotor back iron of the first rotor assembly are of an integral structure, and the second back iron flange and the rotor back iron of the second rotor assembly are of an integral structure.
Preferably, the bearing housing is secured to the stator assembly by an axial locking bolt.
Preferably, the axial midpoint of the middle step of the bearing sleeve coincides with the axial midpoint of the bearing sleeve, and the axial midpoint of the bearing sleeve coincides with the axial midpoint of the stator assembly.
Preferably, the thickness of the outer ring of the first bearing and the thickness of the outer ring of the second bearing are both greater than the height of the middle step of the bearing sleeve, and the thickness of the inner ring of the first bearing and the thickness of the inner ring of the second bearing are both greater than the height of the middle step of the rotating shaft.
Preferably, the first rotor assembly is fixed to the rotation shaft by a screw.
Preferably, the inner bore of the second rotor assembly is in interference fit with the rotating shaft.
Preferably, the first bearing and the second bearing are both single-row angular contact ball bearings or deep groove ball bearings.
The utility model provides a disc motor's bearing support structure, include: stator module, first rotor subassembly, the second rotor subassembly, the apparatus further comprises a rotating shaft, first bearing and second bearing, stator module's internal diameter department coaxial fixation has the bearing housing, the inner circle of bearing housing is equipped with step in the middle of the bearing housing and forms two bearing rooms that are used for the installation bearing respectively in the left and right sides, and the outer lane of two bearings butt respectively in the terminal surface of step in the middle of the bearing housing, be equipped with step in the middle of the pivot in the pivot between first bearing and the second bearing, first rotor subassembly and second rotor subassembly all are equipped with the back iron flange, step and other end butt in the middle of the pivot of inner circle one end butt of two bearings are in the back iron flange that corresponds. The positioning support of the outer lane of two bearings about this scheme utilization and the coaxial fixed bearing housing's of stator module middle step realization utilizes the location support of the inner circle of step and two rotor subassembly's back iron flange realization two bearings in the middle of the pivot, has simplified the location structure of bearing, and this bearing support structure easily processes to the assembly process degree of difficulty of motor bearing has been reduced.
The utility model also provides a disc motor of including above-mentioned bearing support structure. The derivation process of the beneficial effect of the disc motor is substantially similar to the derivation process of the beneficial effect brought by the bearing support structure, and therefore, the description is omitted here.
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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an exploded view of a bearing support structure according to an embodiment of the present invention;
fig. 2 is a sectional view of a disc motor according to an embodiment of the present invention;
fig. 3 is a sectional view of a bearing support structure according to an embodiment of the present invention.
In fig. 1 to 3:
1-stator component, 2-rotating shaft, 3-first rotor component, 4-first bearing, 5-second rotor component, 6-second bearing, 7-screw, 11-bearing sleeve, 12-bearing sleeve middle step, 21-rotating shaft middle step, 31-first rotor back iron, 32-first back iron flange, 51-second rotor back iron and 52-second back iron flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, fig. 1 is an exploded view of a bearing support structure according to an embodiment of the present invention; fig. 2 is a sectional view of a disc motor according to an embodiment of the present invention; fig. 3 is a sectional view of a bearing support structure according to an embodiment of the present invention.
The utility model provides a novel bearing support structure to disc motor of middle stator, both sides rotor. This bearing support structure includes: the rotor assembly comprises a stator assembly 1, a first rotor assembly 3, a second rotor assembly 5, a rotating shaft 2, a first bearing 4 and a second bearing 6, wherein a bearing sleeve 11 is coaxially fixed at the inner diameter of the stator assembly 1, a raised bearing sleeve middle step 12 is arranged in the middle of an inner ring of the bearing sleeve 11, a first bearing chamber for mounting the first bearing 4 and a second bearing chamber for mounting the second bearing 6 are respectively formed at the left side and the right side of the bearing sleeve middle step 12, an outer ring of the first bearing 4 and an outer ring of the second bearing 6 are respectively abutted against the end surface of the bearing sleeve middle step 12, the rotating shaft 2 is provided with a rotating shaft middle step 21 positioned between the first bearing 4 and the second bearing 6, a first back iron flange 32 is coaxially fixed at one side of a rotor back iron (namely a first rotor back iron 31) of the first rotor assembly 3 facing the first bearing 4, a second back iron flange 52 is coaxially fixed at one side of a rotor back iron (namely a second rotor back iron 51) of the second rotor assembly 5 facing the second, one end of the inner ring of the first bearing 4 abuts against the middle step 21 of the rotating shaft and the other end abuts against the first back iron flange 32, and one end of the inner ring of the second bearing 6 abuts against the middle step 21 of the rotating shaft and the other end abuts against the second back iron flange 52.
The scheme utilizes the middle step of the bearing sleeve 11 coaxially fixed with the stator assembly 1 to realize the positioning support of the outer rings of the left bearing and the right bearing, and utilizes the middle step 21 of the rotating shaft and the back iron flanges of the two rotor assemblies to realize the positioning support of the inner rings of the two bearings, namely, the positioning of the whole rotor system relative to the stator assembly 1 in the axial direction is realized. The rotor disc is used as a shaft shoulder of the bearing for positioning, the positioning structure of the bearing is simplified, the bearing supporting structure is easy to process, and the difficulty of the assembly process of the motor bearing is reduced.
Preferably, the first back iron flange 32 is integral with the first rotor back iron 31, and the second back iron flange 52 is integral with the second rotor back iron 51. The manufacturing process of the rotor back iron can be further simplified through the integrated structure design, and the connection strength and the longer service life of the back iron flange and the rotor back iron are guaranteed.
It should be noted that the bearing sleeve 11 can be fixed in the central hole of the stator assembly 1 by various means, such as bolting, welding or integral molding with the stator core, and preferably, the bearing sleeve 11 in this solution is fixed in the stator assembly 1 by an axial locking bolt. The axial locking bolt extends in a direction parallel to the rotational axis of the stator assembly 1.
Preferably, the axial midpoint of the bearing sleeve middle step 12 coincides with the axial midpoint of the bearing sleeve 11, that is, the bearing sleeve 11 is designed to be a symmetrical structure which is symmetrically distributed with respect to the cross section of the axial midpoint of the bearing sleeve middle step 12, and the axial midpoint of the bearing sleeve 11 coincides with the axial midpoint of the stator assembly 1, that is, the symmetry plane of the bearing sleeve 11 coincides with the central symmetry plane of the stator assembly 1. By the arrangement, the stator assembly 1 and the bearing sleeve 11 have higher rotating balance, and vibration and noise are ensured to be smaller in the operation process of the motor.
Preferably, the thickness of the outer ring of the first bearing 4 and the thickness of the outer ring of the second bearing 6 are both greater than the height of the bearing sleeve middle step 12, and the thickness of the inner ring of the first bearing 4 and the thickness of the inner ring of the second bearing 6 are both greater than the height of the rotating shaft middle step 21. So set up, can further reduce the volume and the quality of bearing housing 11 and pivot 2, be favorable to the whole lightweight design of motor.
It should be noted that, the first rotor assembly 3 and the second rotor assembly 5 are both coaxially and fixedly connected with the rotating shaft 2, so as to achieve synchronous rotation with the rotating shaft 2. Preferably, the first rotor assembly 3 is fixed to the shaft 2 by screws 7. Preferably, the inner bore of the second rotor assembly 5 is an interference fit with the shaft 2. Of course, the utility model discloses can also utilize modes such as welding or key-type connection to realize the coaxial fixed of rotor subassembly and pivot 2.
Preferably, the first bearing 4 and the second bearing 6 are both single-row angular contact ball bearings or deep groove ball bearings.
The utility model also provides a disc motor of including above-mentioned bearing support structure. The derivation process of the beneficial effect of the disc motor is substantially similar to the derivation process of the beneficial effect brought by the bearing support structure, and therefore, the description is omitted here.
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. A bearing support structure of a disc motor, comprising: the rotor comprises a stator component (1), a first rotor component (3), a second rotor component (5), a rotating shaft (2), a first bearing (4) and a second bearing (6), and is characterized in that a bearing sleeve (11) is coaxially fixed at the inner diameter of the stator component (1), a raised bearing sleeve middle step (12) is arranged in the middle of the inner ring of the bearing sleeve (11), a first bearing chamber for mounting the first bearing (4) and a second bearing chamber for mounting the second bearing (6) are respectively formed at the left side and the right side of the bearing sleeve middle step (12), the outer ring of the first bearing (4) and the outer ring of the second bearing (6) are respectively abutted against the end face of the bearing sleeve middle step (12), and the rotating shaft (2) is provided with a rotating shaft middle step (21) positioned between the first bearing (4) and the second bearing (6), the rotor back iron orientation of first rotor subassembly (3) one side coaxial fixation of first bearing (4) has first back iron flange (32), the rotor back iron orientation of second rotor subassembly (5) one side coaxial fixation of second bearing (6) has second back iron flange (52), the inner circle one end butt of first bearing (4) in step (21) and other end butt in the middle of the pivot in first back iron flange (32), the inner circle one end butt of second bearing (6) in step (21) and other end butt in the middle of the pivot in second back iron flange (52).
2. The bearing support structure of claim 1, wherein the first back iron flange (32) is of unitary construction with a rotor back iron of the first rotor assembly (3) and the second back iron flange (52) is of unitary construction with a rotor back iron of the second rotor assembly (5).
3. Bearing support structure according to claim 1, characterized in that the bearing sleeve (11) is fixed to the stator assembly (1) by means of axial locking bolts.
4. Bearing support structure according to claim 1, characterized in that the axial midpoint of the bearing sleeve intermediate step (12) coincides with the axial midpoint position of the bearing sleeve (11), the axial midpoint of the bearing sleeve (11) coinciding with the axial midpoint position of the stator assembly (1).
5. Bearing support structure according to claim 1, characterized in that the outer ring thickness of the first bearing (4) and the outer ring thickness of the second bearing (6) are both greater than the height of the bearing housing intermediate step (12), and the inner ring thickness of the first bearing (4) and the inner ring thickness of the second bearing (6) are both greater than the height of the shaft intermediate step (21).
6. Bearing support structure according to claim 1, characterized in that the first rotor assembly (3) is fixed to the shaft (2) by means of screws (7).
7. Bearing support structure according to claim 1, characterized in that the inner bore of the second rotor assembly (5) is interference fitted with the rotating shaft (2).
8. Bearing support structure according to any of claims 1 to 7, characterized in that the first bearing (4) and the second bearing (6) are both single-row angular contact ball bearings or deep groove ball bearings.
9. A disc motor comprising a bearing support structure according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020080246.5U CN210927330U (en) | 2020-01-14 | 2020-01-14 | Bearing support structure of disc type motor and disc type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020080246.5U CN210927330U (en) | 2020-01-14 | 2020-01-14 | Bearing support structure of disc type motor and disc type motor |
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| Publication Number | Publication Date |
|---|---|
| CN210927330U true CN210927330U (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020080246.5U Active CN210927330U (en) | 2020-01-14 | 2020-01-14 | Bearing support structure of disc type motor and disc type motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112803644A (en) * | 2021-02-22 | 2021-05-14 | 苏州诺雅电动车有限公司 | Disk motor and stator coil rolling manufacturing method |
| CN112803641A (en) * | 2021-02-22 | 2021-05-14 | 苏州诺雅电动车有限公司 | Permanent magnet disc type motor and rotor assembly mounting method |
-
2020
- 2020-01-14 CN CN202020080246.5U patent/CN210927330U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112803644A (en) * | 2021-02-22 | 2021-05-14 | 苏州诺雅电动车有限公司 | Disk motor and stator coil rolling manufacturing method |
| CN112803641A (en) * | 2021-02-22 | 2021-05-14 | 苏州诺雅电动车有限公司 | Permanent magnet disc type motor and rotor assembly mounting method |
| CN112803644B (en) * | 2021-02-22 | 2022-06-24 | 苏州诺雅电动车有限公司 | Disk motor and stator coil rolling manufacturing method |
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