CN214281117U - Dynamic balance automatic correction structure, rotor assembly, motor, air conditioner and household appliance - Google Patents
Dynamic balance automatic correction structure, rotor assembly, motor, air conditioner and household appliance Download PDFInfo
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- CN214281117U CN214281117U CN202120648001.2U CN202120648001U CN214281117U CN 214281117 U CN214281117 U CN 214281117U CN 202120648001 U CN202120648001 U CN 202120648001U CN 214281117 U CN214281117 U CN 214281117U
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- automatic correction
- rotating ring
- dynamic balance
- correction structure
- ring
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Abstract
The utility model provides a dynamic balance automatic correction structure, rotor subassembly, motor, air conditioner and domestic appliance, dynamic balance automatic correction structure include rotatory ring and a plurality of balancing piece, and the periphery wall protrusion of rotatory ring is provided with a plurality of fender ribs, and a plurality of fender ribs are at the circumference evenly distributed of rotatory ring, and rotatory circumferential direction slip position can be followed to a balancing piece is located between two adjacent fender ribs. The utility model discloses a dynamic balance automatic correction structure can effectively the dynamic unbalance of automatic correction electric motor rotor, sparingly rectifies the dynamic balance process, improves production efficiency and reduction in production cost, and improves motor stability and work efficiency, reduces motor vibration noise and loss to the life of extension rotor.
Description
Technical Field
The utility model belongs to the technical field of the motor manufacturing technique and specifically relates to a dynamic balance automatic correction structure, rotor subassembly that has this dynamic balance automatic correction structure, the motor that has this rotor subassembly, the air conditioner that has this motor and the domestic appliance who has this motor.
Background
Rotor subassembly in the motor is because the material is inhomogeneous, the blank is defective, various factors such as error that produce in processing and the assembly, rotor subassembly's rotor can produce dynamic unbalance when rotatory around the pivot, the centrifugal inertial force that can make each small particle on the rotor produce can not offset each other, and this centrifugal inertial force passes through the bearing and acts on the rotor, arouse the vibration, the noise produces, the wearing and tearing of bearing and the mechanical life who shortens the rotor are accelerated simultaneously, the loss of increase energy, reduce the efficiency of motor, still can cause direct injury to the rotor when serious, for some high-speed rotatory rotors, this problem can be more obvious.
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 autonomously, 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
In order to realize the utility model discloses a first purpose, the utility model provides a sparingly rectify dynamic balance process, improve production efficiency and reduction in production cost's dynamic balance automatic correction structure can effectively rectify electric motor rotor's dynamic unbalance, improves motor stability and work efficiency, reduces motor vibration noise and loss to the life of extension rotor.
In order to realize the utility model discloses a second purpose, the utility model provides a rotor subassembly with above-mentioned dynamic balance automatic correction structure.
In order to realize the third objective of the present invention, the present invention provides a motor with the above rotor assembly.
In order to realize the fourth objective of the present invention, the present invention provides an air conditioner having the above-mentioned motor.
In order to realize the fifth objective of the present invention, the present invention provides a household appliance with the above motor.
In order to realize the utility model discloses a first purpose, the utility model provides a dynamic balance automatic correction structure, including rotatory ring and a plurality of balancing piece, the periphery wall protrusion of rotatory ring is provided with a plurality of fender ribs, and a plurality of fender ribs are at the circumference evenly distributed of rotatory ring, and a balancing piece can be followed rotatory circumference slip and be located between two adjacent fender ribs.
The further scheme is that a slide rail is arranged between every two adjacent blocking ribs, the slide rail extends in the circumferential direction of the rotating ring, and one balance block can be matched with one slide rail in a sliding manner in the circumferential direction of the rotating ring.
The further scheme is that two adjacent sliding rails are positioned on the same circumference.
Further, the slide rail is adjacent to the outer peripheral wall of the rotating ring.
The further scheme is that a sliding groove is formed in the inner peripheral wall, adjacent to the sliding rail, of the balance block, and the balance block is in sliding fit with the sliding rail through the sliding groove.
The further proposal is that the cross section of the slide rail and the cross section of the chute are semicircular in the radial direction of the rotating ring.
Further, the outer peripheral wall of the balance weight far away from the rotating ring and the outer peripheral wall of the blocking rib are located on the same circumferential surface.
Further, the inner circumferential wall of the rotating ring is provided with a key groove in a penetrating way in the axial direction of the rotating ring.
The further scheme is that the dynamic balance automatic correction structure further comprises a hollow baffle ring, the rotating ring and the balance block are located in a cavity of the baffle ring, the inner peripheral wall of the baffle ring and the inner peripheral wall of the rotating ring are located on the same circumferential surface, or the diameter of the inner peripheral wall of the baffle ring is smaller than that of the inner peripheral wall of the rotating ring, the rotating ring is fixedly connected with the baffle ring, and the baffle ring and the rotating ring are coaxially arranged.
In order to realize the utility model discloses a second purpose, the utility model provides a rotor subassembly, including dynamic balance automatic correction structure, dynamic balance automatic correction structure is foretell dynamic balance automatic correction structure.
In order to realize the third objective of the present invention, the present invention provides an electric machine, including a rotor assembly, the rotor assembly is the above rotor assembly.
In order to realize the fourth objective of the present invention, the present invention provides an air conditioner, which comprises a motor, wherein the motor is the above-mentioned motor.
In order to realize the fifth objective of the present invention, the present invention provides a household electrical appliance, which comprises a motor, wherein the motor is the above-mentioned motor.
The balance block of the dynamic balance automatic correction structure of the utility model can be positioned between two adjacent blocking ribs along the circumferential direction of the rotating ring in a sliding way, when the dynamic balance automatic correction structure is installed on the rotating shaft and is driven to rotate, once the rotor assembly has dynamic unbalance, the balance weights slide to the balance position point in the opposite direction of the mass center offset direction in the circumferential direction of the rotating ring, thereby reach the rotor subassembly and rotate the automatic effect of more rectifying of in-process dynamic balance, consequently corrected the dynamic balance process when having saved the motor installation or when moving, saved artifical man-hour and school dynamic balance instrument, improved production efficiency and reduction in production cost, the expense of the later maintenance that has significantly reduced can effectively rectify motor rotor's dynamic unbalance automatically, improve motor stability and work efficiency, reduce motor vibration noise and loss to the life of extension rotor.
Drawings
Figure 1 is a block diagram of an embodiment of a rotor assembly of the present invention.
Fig. 2 is a structural diagram of a dynamic balance automatic correction structure in an embodiment of the rotor assembly of the present invention.
Fig. 3 is a first perspective exploded view of a dynamic balance automatic correction structure in an embodiment of a rotor assembly according to the present invention.
Fig. 4 is a second exploded perspective view of a dynamic balance auto-calibration structure in an embodiment of a rotor assembly according to the present invention.
Fig. 5 is a partial structural view of a dynamic balance automatic correction structure in an embodiment of the rotor assembly of the present invention.
Fig. 6 is a block diagram of a balance weight in an embodiment of the rotor assembly of the present invention.
Fig. 7 is a sectional view of a dynamic balance automatic correction structure in an embodiment of the rotor assembly of the present invention.
Fig. 8 is a first force-bearing cross-sectional view of a dynamic balance automatic correction structure in an embodiment of a rotor assembly of the present invention.
Fig. 9 is a second force-bearing cross-sectional view of a dynamic balance auto-calibration structure in an embodiment of a rotor assembly of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Referring to fig. 1, the rotor assembly 1 includes a rotating shaft 7, a rotor core 2, a dynamic balance automatic correction structure 3, an axial baffle 4, a bearing 6 and two lock nuts 5, when viewed in an axial direction of the rotating shaft 7, one lock nut 5, the axial baffle 4, the rotor core 2, the dynamic balance automatic correction structure 3 and the other lock nut 5 are sequentially distributed, wherein the dynamic balance automatic correction structure 3 is sleeved on the rotating shaft 7 in an interference fit manner, and the bearing 6 is installed at one end of the rotating shaft 7, which is far away from the dynamic balance automatic correction structure 3. The dynamic balance automatic correction structure 3 replaces the original axial baffle structure on the other side of the rotor core 2.
Referring to fig. 2 to 7, the dynamic balance automatic correction structure 3 of the present embodiment includes a baffle ring 31, a rotating ring 32, and a plurality of balance weights 35, wherein the outer peripheral wall of the rotating ring 32 is provided with a plurality of blocking ribs 33 in a protruding manner, the plurality of blocking ribs 33 are uniformly distributed in the circumferential direction of the rotating ring 32, and one balance weight 35 is slidably located between two adjacent blocking ribs 33 in the circumferential direction of the rotating ring 32. Because a balance weight 35 can be located between two adjacent blocking ribs 33 along the circumferential sliding of the rotating ring 32, when the dynamic balance automatic correction structure 3 is installed on the rotating shaft 7 and is driven to rotate, once the rotor assembly 1 has dynamic unbalance, the balance weights 35 can slide to a balance position point in the opposite direction of the centroid offset direction in the circumferential direction of the rotating ring 32, thereby achieving the effect of automatic correction of dynamic balance in the rotating process of the rotor assembly 1, thereby saving the dynamic balance correction process when the motor is installed or operates, saving labor hour and dynamic balance correcting instruments, improving the production efficiency and reducing the production cost, greatly reducing the cost of later maintenance, effectively and automatically correcting the dynamic unbalance of the motor rotor, improving the stability and the working efficiency of the motor, reducing the vibration noise and the loss of the motor, and prolonging the service life of the rotor.
Wherein, a slide rail 34 is arranged between two adjacent blocking ribs 33, the slide rail 34 extends in the circumferential direction of the rotating ring 32, and a balance weight 35 is slidably engaged with one slide rail 34 in the circumferential direction of the rotating ring 32. Specifically, two adjacent slide rails 34 are located on the same circumference, the slide rails 34 are adjacent to the outer circumferential wall of the rotating ring 32, a sliding groove 351 is formed in the inner circumferential wall of the balance weight 35 adjacent to the slide rails 34, and the balance weight 35 is in sliding fit with the slide rails 34 through the sliding groove 351. In the radial direction of the rotating ring 32, the cross section of the slide rail 34 and the cross section of the slide groove 351 are both semicircular.
In this embodiment, the outer peripheral wall of the balance weight 35 away from the rotating ring 32 and the outer peripheral wall of the blocking rib 33 are located on the same circumferential surface, and the slide rail 34 provided between two adjacent blocking ribs 33 is slidably engaged with the slide groove 351 of the balance weight 35. In order to accommodate rotor assemblies 1 that correct for different amounts of dynamic balance, the counterbalance 35 is made of a denser material relative to the rotating ring 32. In order to correct the rotor assembly 1 with a larger amount of dynamic unbalance, the weight 35 is made of a material with a heavier mass than the rotating ring 32. And the baffle ring 31 and the rotating ring 32 may be made of an aluminum alloy material.
In the present embodiment, a key groove 321 is formed in the inner peripheral wall of the rotating ring 32 in the axial direction of the rotating ring 32, and a flat key is embedded in the key groove 321 so that the rotating ring 32 is fixed to the rotating shaft 7. The baffle ring 31 is a hollow cavity, and the rotating ring 32 and the counterweight 35 are located in the hollow cavity of the baffle ring 31, so as to limit the position of the counterweight 35 in the radial direction of the rotating ring 32. When the inner circumferential wall of the baffle ring 31 and the inner circumferential wall of the rotating ring 32 are located on the same circumferential surface, the inner circumferential wall of the baffle ring 31 is also provided with a through groove 313 opposite to the key groove 321 on the inner circumferential wall of the rotating ring 32, and flat keys are embedded in the key groove 321 and the through groove 313 so that the rotating ring 32 and the baffle ring 31 are fixed on the rotating shaft 7.
When the inner peripheral wall diameter of the baffle ring 31 is smaller than the inner peripheral wall diameter of the rotating ring 32, the rotating ring 32 is fixedly connected with the baffle ring 31, and the baffle ring 31 and the rotating ring 32 are coaxially arranged. That is, when the diameter of the inner peripheral wall of the baffle ring 31 is smaller than the diameter of the inner peripheral wall of the rotating ring 32, the inner peripheral wall of the baffle ring 31 is provided with a key groove (corresponding to the through groove 313), and a flat key is embedded in the key groove to fix the baffle ring 31 on the rotating shaft 7, so that the rotating shaft 7 drives the baffle ring 31 to drive the rotating ring 32 to rotate synchronously due to the fixed connection of the rotating ring 32 and the baffle ring 31.
Referring to fig. 8 and 9, when the rotor assembly 1 operates, the rotating shaft 7 drives the rotor core 2, the dynamic balance automatic correction structure 3, and the axial baffle 4 to rotate, a sliding friction force f is generated between the balance weight 35 of the dynamic balance automatic correction structure 3 and the sliding rail 34 between two adjacent baffle ribs 33, and the direction of the friction force f points to the rotating direction of the rotating shaft 7. Since the rotor assembly 1 has a dynamic unbalance and an eccentric point P that does not coincide with the origin O exists, the supporting force N of the slide rail 34 for the balance weight 35 has a deviation with an angle N, the centroid point of the balance weight 35 is stressed as shown in fig. 8, the sliding friction force f, the component g (X) of gravity, and the component N (X) of the supporting force are applied in the X-axis direction, and these three forces make the balance weight 35 slide along the slide rail 34 in the circumferential direction of the rotating ring 32, and the position of the eccentric point P is automatically corrected while sliding, and the position of the eccentric point P is corrected to the origin O, so that the rotor assembly 1 is balanced. When the eccentric point P returns to the original point O, the balance weight 35 and the rotating ring 32 rotate at the same speed, and the two move to a relatively balanced state, so that only the component g (X) of gravity and the static friction force f (static) remain in the force on the X axis, and the two forces are equal, and the resultant force on the Y axis is a centripetal force and points to the axis, as shown in fig. 9.
The blocking ribs 33 and the slide rails 34 on the rotating ring 32 of the present embodiment are integrally formed with the rotating ring 32, the sliding grooves 351 of the balance weights 35 are slidably engaged with the slide rails 34, and one balance weight 35 is slidably located between two adjacent blocking ribs 33 along the circumferential direction of the rotating ring 32. In the embodiment, the hollow baffle ring 31 is formed by welding the first baffle and the second baffle, and the rotating ring 32 and the balance weight 35 are positioned in the cavity of the baffle ring 31, so that the position of the balance weight 35 in the radial direction of the rotating ring 32 is limited.
In the present embodiment, the dynamic balance automatic correction structure 3 is driven by the rotating shaft 7 to rotate, and a sliding friction force is generated between the balance weight 35 of the dynamic balance automatic correction structure 3 and the sliding rail 34, and in addition, the gravity of the balance weight 35 itself causes the balance weight 35 to rotate along with the rotating shaft 7. Once the rotor assembly 1 is unbalanced, the balance weights 35 slide to the balance position point in the opposite direction of the center of mass shift in the circumferential direction of the rotating ring 32, that is, when the rotor assembly 1 operates stably at a certain speed, one balance weight 35 reaches a stressed balance state at a certain position between two adjacent blocking ribs 33, thereby compensating the dynamic unbalance on the rotor assembly 1, balancing the rotor assembly 1, and achieving the purpose of automatically correcting the dynamic unbalance. Rotor subassembly 1 only needs to install this embodiment dynamic balance automatic correction structure 3, alright reach rotor subassembly 1 and rotate the automatic effect of more proofreading of in-process dynamic balance, proofread and correct the dynamic balance process when having saved the motor installation or when operating, artifical man-hour and proof dynamic balance instrument have been saved, production efficiency and reduction in production cost have been improved, the expense of later maintenance has significantly reduced, can effectively the dynamic unbalance of automatic correction electric motor rotor, improve motor stability and work efficiency, reduce motor vibration noise and loss, and the life of extension rotor.
The rotor assembly 1 of the present embodiment is a core component of a motor, the motor having the rotor assembly 1 of the present embodiment is applicable to an air conditioner, and also applicable to other household appliances, electric tools, and mechanical devices, the household appliances further include a washing machine, an electric fan, a refrigerator, a recorder, a video disc player, a dust collector, a camera, an electric hair drier, an electric shaver, and the like, the electric tools include tools for drilling, polishing, grooving, cutting, reaming, and the like, and the mechanical devices include various small machine tools, small machines, medical devices, electronic instruments, and the like.
Above embodiment is the preferred example of the utility model, and not the restriction the utility model discloses the range of implementing, the event all according to the utility model discloses the equivalent change or the decoration that structure, characteristic and principle were done of application for patent scope all should be included in the utility model discloses the patent application scope.
Claims (13)
1. The dynamic balance automatic correction structure is characterized by comprising a rotating ring and a plurality of balance blocks, wherein a plurality of blocking ribs are convexly arranged on the outer peripheral wall of the rotating ring;
the plurality of blocking ribs are uniformly distributed in the circumferential direction of the rotating ring, and one balancing block can be slidably positioned between two adjacent blocking ribs in the circumferential direction of the rotating ring.
2. The dynamic balance automatic correction structure according to claim 1, characterized in that:
a slide rail is arranged between two adjacent blocking ribs, the slide rail extends in the circumferential direction of the rotating ring, and one balance block can be matched with one slide rail in a sliding manner in the circumferential direction of the rotating ring.
3. The dynamic balance automatic correction structure according to claim 2, characterized in that:
two adjacent slide rails are located on the same circumference.
4. The dynamic balance automatic correction structure according to claim 2, characterized in that:
the slide rail abuts against the outer peripheral wall of the rotating ring.
5. The dynamic balance automatic correction structure according to claim 2, characterized in that:
the balance block is provided with a sliding groove adjacent to the inner peripheral wall of the sliding rail, and the balance block is in sliding fit with the sliding rail through the sliding groove.
6. The dynamic balance automatic correction structure according to claim 5, characterized in that:
in the radial direction of the rotating ring, the sections of the sliding rail and the sliding groove are semicircular.
7. The dynamic balance automatic correction structure according to claim 1, characterized in that:
the outer peripheral wall of the balance block far away from the rotating ring and the outer peripheral wall of the blocking rib are located on the same circumferential surface.
8. The dynamic balance automatic correction structure according to claim 1, characterized in that:
the key groove is formed in the axial direction of the rotating ring in a penetrating mode on the inner circumferential wall of the rotating ring.
9. The dynamic balance automatic correction structure according to any one of claims 1 to 8, characterized in that:
the dynamic balance automatic correction structure also comprises a hollow baffle ring, and the rotating ring and the balance weight are positioned in a cavity of the baffle ring;
the inner circumferential wall of the baffle ring and the inner circumferential wall of the rotating ring are positioned on the same circumferential surface, or,
the baffle plate comprises a baffle plate ring, a rotating ring and a baffle plate ring, wherein the diameter of the inner peripheral wall of the baffle plate ring is smaller than that of the inner peripheral wall of the rotating ring, the rotating ring is fixedly connected with the baffle plate ring, and the baffle plate ring and the rotating ring are coaxially arranged.
10. Rotor subassembly, including dynamic balance automatic correction structure, its characterized in that:
the dynamic balance automatic correction structure is the dynamic balance automatic correction structure described in any one of claims 1 to 9 above.
11. The motor, including the rotor subassembly, its characterized in that:
the rotor assembly is as claimed in claim 10 above.
12. Air conditioner, including the motor, its characterized in that:
the motor is as claimed in claim 11 above.
13. Domestic appliance, including the motor, its characterized in that:
the motor is as claimed in claim 11 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120648001.2U CN214281117U (en) | 2021-03-30 | 2021-03-30 | Dynamic balance automatic correction structure, rotor assembly, motor, air conditioner and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120648001.2U CN214281117U (en) | 2021-03-30 | 2021-03-30 | Dynamic balance automatic correction structure, rotor assembly, motor, air conditioner and household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214281117U true CN214281117U (en) | 2021-09-24 |
Family
ID=77798958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120648001.2U Active CN214281117U (en) | 2021-03-30 | 2021-03-30 | Dynamic balance automatic correction structure, rotor assembly, motor, air conditioner and household appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214281117U (en) |
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2021
- 2021-03-30 CN CN202120648001.2U patent/CN214281117U/en active Active
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