CN111864977B - Dynamic balance automatic correction device, rotor, motor and household appliance - Google Patents
Dynamic balance automatic correction device, rotor, motor and household appliance Download PDFInfo
- Publication number
- CN111864977B CN111864977B CN202010884137.3A CN202010884137A CN111864977B CN 111864977 B CN111864977 B CN 111864977B CN 202010884137 A CN202010884137 A CN 202010884137A CN 111864977 B CN111864977 B CN 111864977B
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- Prior art keywords
- dynamic balance
- axis
- eccentric
- correction device
- rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
Abstract
The invention provides a dynamic balance automatic correction device, a rotor, a motor and a household appliance, wherein the dynamic balance automatic correction device comprises a rotating main body, and the rotating axis of the rotating main body is a first axis; the dynamic balance automatic correction device also comprises an eccentric body; the eccentric bodies are rotatably arranged on the rotating main body, and the plurality of eccentric bodies are uniformly arranged on the periphery of the first axis; the rotating and swinging axis of the eccentric body is a second axis, and the eccentric body is provided with an eccentric part extending back to the second axis. The rotor comprises a balance automatic correction device, the motor comprises a rotor, and the household appliance comprises a motor. The rotating main body is provided with a plurality of rotatable eccentric bodies, which can swing in a rotating mode, at the periphery of the first axis, when the dynamic balance automatic correction device is installed on the rotating shaft and rotates, once the rotor is unbalanced in a dynamic mode, the eccentric bodies swing in the opposite direction of the mass center deviation direction, and therefore the effect of automatic correction of dynamic balance in the rotating process of the rotor is achieved, the dynamic balance process does not need to be corrected in advance, and production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of motor manufacturing, in particular to a dynamic balance automatic correction device applied to a rotor, and the rotor, a motor and a household appliance with the dynamic balance automatic correction device.
Background
When the motor rotates, under the influence of various factors, dynamic unbalance is generated when the rotor rotates around the rotating shaft of the rotor, and the generation of the dynamic unbalance of the rotor can induce mechanical system faults, so that mechanical equipment generates vibration and noise, and mechanical parts are accelerated to wear and damage. The existing dynamic balance adjusting device for solving the dynamic unbalance of the rotor comprises a rotating main body which is fixedly sleeved on a rotating shaft, a plurality of screw holes which are uniformly distributed are formed in the periphery of the rotating main body, and a balance adjusting bolt is installed on each screw hole. The mass center of the dynamic balance adjusting device can be changed by adjusting the screwing amount of the balance adjusting bolt, so that the dynamic unbalance correction of the rotor is realized.
The existing dynamic balance adjusting device has the problems that after a rotor iron core and the dynamic balance adjusting device are sleeved on a rotating shaft, dynamic balance correction of a rotor needs to be carried out in advance because balance adjusting bolts cannot move automatically, and the dynamic balance pre-correction is completed by gradually adjusting the precession amount of each balance adjusting bolt, so that the time consumption is long, and the production efficiency is low.
Disclosure of Invention
The first object of the present invention is to provide a dynamic balance automatic correction device which can save the dynamic balance correction process and improve the production efficiency.
A second object of the present invention is to provide a rotor that improves production efficiency.
A third object of the present invention is to provide a motor that improves production efficiency.
A fourth object of the present invention is to provide a home appliance which improves production efficiency.
The invention provides a dynamic balance automatic correction device, which comprises a rotating main body, wherein the rotating axis of the rotating main body is a first axis; the dynamic balance automatic correction device also comprises an eccentric body, and the eccentric body is provided with an eccentric part; the eccentric bodies are rotatably arranged on the rotating main body, and the plurality of eccentric bodies are uniformly arranged on the periphery of the first axis; the rotating and swinging axis of the eccentric body is a second axis, the second axis is parallel to the first axis, and the first axis and the second axis are not coaxially arranged.
According to the scheme, the rotating main body is provided with the plurality of rotatable and swingable eccentric bodies on the periphery of the first axis, and when the dynamic balance automatic correction device is installed on the rotating shaft and rotates, once the rotor is dynamically unbalanced, the plurality of eccentric bodies swing in the direction opposite to the mass center deviation direction, so that the effect of automatically correcting the dynamic balance in the rotating process of the rotor is achieved, a dynamic balance correction process is not needed in advance, and the production efficiency is improved.
The further proposal is that a plurality of installation spaces are arranged on the rotating main body along the circumferential direction of the rotating main body, and the inlets of the installation spaces are positioned on the periphery of the rotating main body; the dynamic balance automatic correction device further comprises a bolt, the bolt penetrates through the rotating main body along the axial direction of the rotating main body and is inserted into the installation space, the bolt is located on the second shaft center, and the eccentric body is rotatably sleeved outside the bolt.
Therefore, the bolt penetrates through the rotating main body to become the rotating shaft of the eccentric body, and the arrangement enables the dynamic balance automatic correction device to have a simple installation structure and reduces production cost.
The further scheme is that the rotating main body comprises a first baffle, an axial extension piece and a second baffle which are sequentially arranged along the axial direction of the rotating main body, in the axial direction of the rotating main body, an installation space is formed between the first baffle and the second baffle, and the bolt is inserted between the first baffle and the second baffle.
It is thus clear that this setting makes the main part of rotating divide into three unit of the shaping processing more easily, after the bolt alternates and screws, not only can accomplish the fixed connection between the three unit, accomplishes the installation of eccentric body simultaneously, and this setting can further reduce the processing degree of difficulty and the assembly degree of difficulty to further improve production efficiency.
The further scheme is that a plurality of blocking parts are formed on the periphery of the axial extending piece, the blocking parts extend back to the periphery of the first axial rotating body, and the blocking parts are blocked between two adjacent installation spaces.
Therefore, the arrangement of the baffle parts can not only improve the rotation stability of the dynamic balance automatic correction device, ensure the relative position relationship between the peripheral part of the first baffle plate and the peripheral part of the second baffle plate, but also avoid the mutual influence between the eccentric parts.
In a further scheme, the axial extension piece limits the eccentric part in the circumferential direction of the second shaft center.
Therefore, the arrangement can prevent the mass center from being unstable and influencing the correction effect due to the fact that the rotation and swing freedom degree of each eccentric body is too large.
The further scheme is that a screw hole is formed in the second baffle, a bolt sequentially penetrates through the first baffle and the eccentric body and then is matched with the screw hole, or the dynamic balance automatic correction device further comprises a nut, and the bolt sequentially penetrates through the first baffle, the eccentric body and the second baffle and then is matched with the nut.
In a further development, the eccentric body extends in an elongated manner from the second axis to the eccentric section.
As can be seen from the above, this arrangement makes the center of mass of the eccentric body itself further away from the second axis, and this arrangement can improve the sensitivity of the automatic dynamic balance correction device in automatically correcting the dynamic balance.
In a further aspect, the plurality of eccentric bodies are located at the same axial position in the axial direction of the first shaft center.
Therefore, the installation of the eccentric bodies is facilitated, the design and production of the dynamic balance automatic correction device are facilitated, and the production efficiency is improved.
The rotor provided by the second object of the invention comprises a dynamic balance automatic correction device, and the dynamic balance automatic correction device adopts the dynamic balance automatic correction device.
The rotor further comprises a rotating shaft, a shaft hole is formed in the rotating body, the rotating body is sleeved on the rotating shaft, and the inner peripheral surface of the shaft hole is in interference fit with the outer peripheral surface of the rotating shaft.
The third object of the invention is to provide a motor comprising a rotor, wherein the rotor is the rotor.
The fourth object of the present invention is to provide a household appliance, which comprises a motor, wherein the motor is the above motor.
Drawings
Fig. 1 is a structural view of an embodiment of a rotor of the present invention.
Fig. 2 is a structural diagram of a first embodiment of the automatic dynamic balance correction apparatus of the present invention.
FIG. 3 is a schematic diagram of the automatic dynamic balance calibration apparatus according to the first embodiment of the present invention.
Fig. 4 is a sectional view of the automatic dynamic balance correction apparatus according to the first embodiment of the present invention.
Fig. 5 is a sectional view of a second embodiment of the automatic dynamic balance correction apparatus of the present invention.
Detailed Description
First embodiment of dynamic balance automatic correction device
Referring to fig. 1, fig. 1 is a structural view of an embodiment of a rotor according to the present invention. The invention provides a household appliance, such as an air conditioner, a washing machine, an electric fan, a dehumidifier and the like, with a motor, wherein the motor comprises a rotor, the rotor comprises a rotating shaft 1, a rotor iron core 2, a dynamic balance automatic correction device 3, a bearing 4 and a welding ring 5, an axial baffle (not shown in the figure) and the rotor iron core 2 are sleeved on the rotating shaft 1 in sequence, the dynamic balance automatic correction device 3 is sleeved on the rotating shaft 1 in an interference fit manner in a heating mode, then the welding ring 5 is sleeved and welded, and then the bearing 4 is installed at two ends of the rotating shaft 1. The dynamic balance automatic correction device 3 replaces the original axial baffle plate on the other side of the rotor core 2.
Referring to fig. 2 to 4, fig. 2 is a structural view of a first embodiment of the automatic dynamic balance correction apparatus of the present invention, fig. 3 is a structural view of a first baffle hidden in the first embodiment of the automatic dynamic balance correction apparatus of the present invention, and fig. 4 is a sectional view of the first embodiment of the automatic dynamic balance correction apparatus of the present invention. The dynamic balance automatic correction device 3 includes a rotating body 30, four eccentric bodies 34, and four bolts 35, and the rotating body 30 includes a first stopper 31, an axial extension 33, and a second stopper 32. The first baffle plate 31, the axial extension piece 33 and the second baffle plate 32 are all made of 6A02 aluminum alloy material, the rotation axis of the rotating body 30 is the first axis 100, and the first baffle plate 31, the axial extension piece 33 and the second baffle plate 32 are arranged in sequence in the axial direction of the first axis 100.
The axial extension 33 has an inner ring portion 331 and four barrier portions 332 protruding from the outer periphery of the inner ring portion 331 away from the first axis 100 along the radial outer periphery, so that a mounting space 330 for accommodating the eccentric body 34 is formed between the adjacent two barrier portions 332, and after the axial extension 33 is pressed between the first barrier 31 and the second barrier 32, the mounting space 330 is located between the first barrier 31 and the second barrier 32.
The first shutter 31 is provided with a bolt through hole penetrating the mounting space 330, and the second shutter 32 is provided with a screw hole penetrating the mounting space 330. The eccentric body 34 is placed in the installation space 330, the bolt 35 sequentially passes through the bolt through hole of the first baffle plate 31 and the connecting through hole 340 of the eccentric body 34 and then is finally locked in the screw hole of the second baffle plate 32, so that the first baffle plate 31, the axial extension piece 33 and the second baffle plate 32 are locked and fixed, and meanwhile, the installation of the eccentric body 34 is completed, at the moment, the second bolt 35 is positioned on the second axis 200, and the eccentric body 34 can be rotatably positioned on the circumferential position of the dynamic balance automatic correction device 3 by taking the second axis 200 as a rotating and swinging axis.
In addition, since the plurality of eccentric bodies 34 are each located between the first shutter 31 and the second shutter 32, the plurality of eccentric bodies 34 are located at the same axial position in the axial direction of the first shaft center 100, that is, the plurality of eccentric bodies 34 are not arranged in the front-rear position in the axial direction of the dynamic balance automatic correction device 3, and are not mounted with a misalignment, and the center of mass of the plurality of eccentric bodies 34 is located substantially on the same plane perpendicular to the shaft center.
Referring again to FIG. 4, the eccentric body 34 is made of a metal material having a material density greater than that of the rotating body 30, such as copper. The eccentric body 34 is in a strip shape, the eccentric body 34 is opposite to the eccentric part 341 extending from the second axis 200, and a certain distance is formed between the center of mass 349 of the eccentric body 34 and the second axis 200. Further, since the second axis 200 is close to the inner ring portion 331 and the distance between the second axis 200 and the inner ring portion 331 is smaller than the extension length of the eccentric body 34, when the eccentric body 34 is swung to a certain position, the inner ring portion 331 restricts the eccentric portion 341 from the circumferential direction of the second axis 200, and the eccentric body 34 is restricted from continuing the swinging.
Referring to fig. 1 to 4, an axial hole 300 passing through the first axis 100 in the middle of the dynamic balance automatic correction device 3 is formed, the axial hole 300 is formed by mutually passing through axial holes on the first baffle 31, the axial extension piece 33 and the second baffle 32, and the inner circumferential surface of the axial hole 300 is in interference fit with the outer circumferential surface of the rotating shaft 1, so that the positional relationship among the first baffle 31, the axial extension piece 33 and the second baffle 32 can be further fixed, and the stability of the dynamic balance automatic correction device 3 is improved.
Assuming that the virtual plane L of the first axis 100 is used as a boundary, the space is a first region 901 and a second region 902 on opposite sides of the virtual plane L. Then, assuming that the center of mass shifts towards the second region 902 during rotation of the rotor, the mass of the device in the first region 901 will be less than the mass in the second region 902. At this time, the rotor receives a centripetal force F1 ═ m × w in the first region 9012Xr, the rotor is subjected to a centripetal force F2 ═ m-m1 × w in the second region 9022X r, where m is the mass of the object, w is the angular velocity, and r is the radius between the mass point and the axis of rotation.
At this time, the rotor is in a dynamic unbalance state, and a centripetal force F3 needs to be generated in the second region 902, which is m1 × w2Xr makes the centripetal force of the first region 901 equal to that of the second region 902. Since the mass of the eccentric body 34 is fixed, the angular velocity should be kept regular according to the working requirements of the rotor, and therefore, the centripetal force F3 can only be changed by changing the radius r. As can be seen in FIG. 4, as the eccentric 34 yaws relative to the second axis 200, the radius R of the center of mass 349 of the eccentric 34 to the first axis 100 changes. Therefore, when the rotor rotates to generate a dynamic unbalance, the centripetal force can be compensated by the runout of the eccentric member 34, thereby achieving a dynamic balance automatic correction effect.
Second embodiment of dynamic balance automatic correction device
Referring to fig. 5, fig. 5 is a sectional view of a second embodiment of the automatic dynamic balance correcting apparatus according to the present invention. In this embodiment, the axial extension 63 does not have a barrier between two adjacent eccentric bodies 64.
In other embodiments, the second baffle plate may be provided with a bolt through hole, and the automatic balance correction device further includes a nut, and the bolt sequentially passes through the bolt through hole of the first baffle plate, the connecting through hole of the eccentric body, and the bolt through hole of the second baffle plate and then is matched with the nut.
In other embodiments, the rotating body is a single piece, a plurality of installation spaces are formed at intervals by removing materials on the periphery of the rotating body, baffle plates are formed on two sides of the installation spaces, and through holes or screw holes are drilled in the baffle plates.
The dynamic balance automatic correction device provided by the invention can save the rotor dynamic balance pre-correction process, realizes the automatic correction of the rotor dynamic balance, and has the characteristics of simple structure and low production cost. The main part of rotation divide into the unit of three easy contour machining, after the bolt alternates and screws, not only can accomplish the fixed connection between the three unit, accomplishes the installation of eccentric body simultaneously, and this setting can further reduce the processing degree of difficulty and the assembly degree of difficulty to further improve production efficiency.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.
Claims (9)
1. The dynamic balance automatic correction device comprises a rotating main body, wherein the rotating axis of the rotating main body is a first axis;
the method is characterized in that:
the dynamic balance automatic correction device also comprises an eccentric body, and the eccentric body is provided with an eccentric part;
the eccentric bodies are rotatably and swingingly arranged on the rotating main body, and the plurality of eccentric bodies are uniformly arranged on the periphery of the first axis;
the rotating and swinging axis of the eccentric body is a second axis, the second axis is parallel to the first axis, and the first axis and the second axis are not coaxially arranged;
the dynamic balance automatic correction device also comprises a bolt, and the rotating main body comprises a first baffle, an axial extension piece and a second baffle which are sequentially arranged along the axial direction of the rotating main body;
a plurality of installation spaces arranged along the circumferential direction of the rotating main body are formed between the first baffle and the second baffle, and inlets of the installation spaces are positioned on the periphery of the rotating main body;
the bolt is inserted between the first baffle and the second baffle along the axial direction of the rotating main body, the bolt is inserted into the installation space and is positioned on the second axle center, and the eccentric body is rotatably sleeved outside the bolt;
the axial extension piece is provided with an inner ring part and a plurality of blocking parts positioned on the periphery of the inner ring part, the blocking parts extend from the periphery of the inner ring part to the periphery of the rotating main body back to the first axial center, and the blocking parts are blocked between two adjacent installation spaces;
the inner ring portion limits the eccentric portion from the circumferential direction of the second axis to limit the rotation of the eccentric body.
2. The dynamic balance automatic correction device according to claim 1, characterized in that:
in the circumferential direction of the second axis, the axial extension piece limits the eccentric portion.
3. The dynamic balance automatic correction device according to claim 1, characterized in that:
the second baffle plate is provided with a screw hole, the bolt sequentially penetrates through the first baffle plate and the eccentric body and then is matched with the screw hole,
or the like, or, alternatively,
the dynamic balance automatic correction device further comprises a nut, and the bolt sequentially penetrates through the first baffle, the eccentric body and the second baffle and then is matched with the nut.
4. The automatic dynamic balance correction device according to any one of claims 1 to 3, characterized in that:
the eccentric body extends in an elongated shape from the second axis toward the eccentric portion.
5. The automatic dynamic balance correction device according to any one of claims 1 to 3, characterized in that:
in the axial direction of the first shaft center, the plurality of eccentric bodies are located at the same axial position.
6. The rotor, including dynamic balance automatic correction device, its characterized in that:
the dynamic balance automatic correction device adopts the dynamic balance automatic correction device of any one of the above claims 1 to 5.
7. The rotor of claim 6, wherein:
the rotor further comprises a rotating shaft;
the rotating main body is provided with a shaft hole, the rotating main body is sleeved on the rotating shaft, and the inner peripheral surface of the shaft hole is in interference fit with the outer peripheral surface of the rotating shaft.
8. The motor, including the rotor, its characterized in that:
the rotor is the rotor of claim 6 or 7.
9. Domestic appliance, including the motor, its characterized in that:
the motor is the motor of the claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010884137.3A CN111864977B (en) | 2020-08-28 | 2020-08-28 | Dynamic balance automatic correction device, rotor, motor and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010884137.3A CN111864977B (en) | 2020-08-28 | 2020-08-28 | Dynamic balance automatic correction device, rotor, motor and household appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111864977A CN111864977A (en) | 2020-10-30 |
| CN111864977B true CN111864977B (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010884137.3A Active CN111864977B (en) | 2020-08-28 | 2020-08-28 | Dynamic balance automatic correction device, rotor, motor and household appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111864977B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178976A (en) * | 1996-10-09 | 1998-04-15 | 三星电子株式会社 | Disc player mounted with self-compensating dynamic balance device |
| KR19990048138A (en) * | 1997-12-08 | 1999-07-05 | 윤종용 | Self Compensation Balancer |
| CN1819043A (en) * | 1997-09-25 | 2006-08-16 | 松下电器产业株式会社 | Disk drive apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100611964B1 (en) * | 2000-02-29 | 2006-08-11 | 삼성전자주식회사 | Self-compensating dynamic balancer for disk player and turntable combined with the same |
-
2020
- 2020-08-28 CN CN202010884137.3A patent/CN111864977B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178976A (en) * | 1996-10-09 | 1998-04-15 | 三星电子株式会社 | Disc player mounted with self-compensating dynamic balance device |
| CN1819043A (en) * | 1997-09-25 | 2006-08-16 | 松下电器产业株式会社 | Disk drive apparatus |
| KR19990048138A (en) * | 1997-12-08 | 1999-07-05 | 윤종용 | Self Compensation Balancer |
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| Publication number | Publication date |
|---|---|
| CN111864977A (en) | 2020-10-30 |
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