CN205753713U - Rotor assembly and rotor core thereof - Google Patents
Rotor assembly and rotor core thereof Download PDFInfo
- Publication number
- CN205753713U CN205753713U CN201620386509.9U CN201620386509U CN205753713U CN 205753713 U CN205753713 U CN 205753713U CN 201620386509 U CN201620386509 U CN 201620386509U CN 205753713 U CN205753713 U CN 205753713U
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- axially extending
- extending bore
- rotor core
- straightway
- rotor assembly
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- 238000012986 modification Methods 0.000 description 1
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Abstract
This utility model relates to a kind of rotor assembly and rotor core thereof, and this rotor assembly includes rotating shaft, the rotor core being arranged in this rotating shaft, even number of permanent magnets and two pieces of balance blocks;Described rotor core is provided with the central through hole adaptive with described rotating shaft and the axially extending bore with described permanent magnet equivalent amount, each permanent magnet is pressed into fixed in each axially extending bore of described rotor core, two pieces of balance blocks are close to the both ends of the surface of described rotor core respectively, and be sleeved in described rotating shaft by respective first central through hole respectively, two pieces of balance blocks block each permanent magnet from the two ends of described rotor core, make each permanent magnet not move axially；At least two the first axially extending bore it is evenly arranged with on described rotor core.This utility model rotor assembly has that rotary inertia is smaller, fast response time and the advantage such as response time is short.
Description
【Technical field】
This utility model relates to motor, particularly relates to small-sized or micromachine, is especially for the rotor assembly on small-sized or micromachine.
【Background technology】
Small-sized or micromachine is applied in Medical Instruments, and such as, a kind of small-sized or micromachine is used for respirator, and this is small-sized or micromachine includes rotor assembly;See Fig. 8 to Figure 13, this rotor assembly 40 ' includes rotating shaft 41, it is arranged on the rotor core 42 ' in this rotating shaft 41, even number of permanent magnets 43 and two pieces of balance blocks 44 ', rotor core 42 ' is provided with and the axially extending bore 421 of described permanent magnet 43 equivalent amount, each permanent magnet 43 is pressed into fixed in each axially extending bore 421 of described rotor core 42 ', two pieces of balance blocks 44 ' are close to the both ends of the surface of described rotor core 42 ' respectively, and be separately fixed in described rotating shaft 41, two pieces of balance blocks 44 ' have blocked moving axially of each permanent magnet 43 from the two ends of rotor core 42 ', make each permanent magnet 43 fixing more firm.The prior art has a following weak point for the rotor assembly on small-sized or micromachine:
One, rotary inertia is bigger, and the response speed of rotor assembly is slow, and response time is long;
If two have used the small-sized of this rotor assembly or micromachine to be applied on respirator, owing to the response speed of rotor assembly is slow, response time is long, makes patient be treated the most timely, can badly influence the state of an illness of patient.
【Utility model content】
Thering is provided a kind of rotor assembly and rotor core thereof in place of the technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art, this rotor assembly has that rotary inertia is smaller, fast response time and the advantage such as response time is short.
This utility model solves described technical problem and the technical scheme is that
Thering is provided a kind of rotor assembly, for small-sized or micromachine, this is small-sized or micromachine is the most again for respirator, and rotor assembly includes rotating shaft, the rotor core being arranged in this rotating shaft, even number of permanent magnets and two pieces of balance blocks;Described rotor core is provided with the central through hole adaptive with described rotating shaft and the axially extending bore with described permanent magnet equivalent amount, each permanent magnet is pressed into fixed in each axially extending bore of described rotor core, two pieces of balance blocks are close to the both ends of the surface of described rotor core respectively, and be sleeved in described rotating shaft by respective first central through hole respectively, two pieces of balance blocks block each permanent magnet from the two ends of described rotor core, make each permanent magnet not move axially；At least two the first axially extending bore it is evenly arranged with on described rotor core.
Each first axially extending bore lays respectively between each axially extending bore and central through hole.
Described first axially extending bore and described axially extending bore equivalent amount, and it is respectively arranged with described first axially extending bore between each axially extending bore and central through hole.
The axial orthographic projection figure of described first axially extending bore includes inner circle segmental arc successively, first straightway, first oblique line section, outer line segment, second oblique line section and the second straightway, wherein inner circle segmental arc is close with central through hole and has same central axis, outer line segment is near corresponding axially extending bore, first straightway and the second straightway are parallel to each other, first oblique line section is connected with the first circular arc with the first straightway and the second straightway respectively with the second oblique line section, first straightway and the second straightway are connected with the second circular arc with inner circle segmental arc respectively, first oblique line section is connected with outer line segment three-arc respectively with the second oblique line section.
Described balance block includes the stopper portions being close to described rotor core end face and for imitating the balance portion of the balance of the most described rotor assembly, and the external diameter in this balance portion is less than the external diameter of described stopper portions;When two pieces of balance blocks are close to the both ends of the surface of described rotor core respectively, each permanent magnet on described rotor core is all covered in by respective stopper portions respectively.
The end face of the stopper portions of described balance block is provided inwardly with having the groove of same central axis with the first central through hole;This groove will not make each permanent magnet on described rotor core expose.
The circumferential end surfaces in the balance portion of described balance block is provided with a circle V-groove.
Also providing for a kind of rotor core on rotor assembly, this rotor core is provided with central through hole and even number axially extending bore；At least two the first axially extending bore it is evenly arranged with on described rotor core.
The most relatively, the having the beneficial effects that of this utility model rotor assembly and rotor core thereof:
1, on rotor core, at least two the first axially extending bore specially it is evenly arranged with, respectively the effect of this first axially extending bore is the quality in order to reduce rotor core, thus reach reduce the rotor core impact on the rotary inertia of rotor assembly so that the rotary inertia of rotor assembly is smaller, fast response time and response time short;
2 and balance block is divided into stopper portions and balance portion two parts, and make the external diameter external diameter less than stopper portions in balance portion, purpose mainly reduces the diameter at the balance portion doing duplicate removal balance, thus reaching the impact reducing whole balance block to the rotary inertia of rotor assembly so that the rotary inertia of rotor assembly is less, response speed is faster shorter with response time;
3, the end face of stopper portions at balance block is provided inwardly with groove again;The effect of this groove is also for reducing the quality balancing block, thus reaches to reduce the balance block impact on the rotary inertia of rotor assembly so that the rotary inertia of rotor assembly further reduces, response speed reaction is faster shortened further with response time;
4, in the circumferential end surfaces in the balance portion of balance block, it is provided with a circle V-groove again, the bit location when Main Function of this V-groove is to facilitate rotor assembly to do duplicate removal balance positions, this V-groove also has an effect can also reduce the quality of balance block, thus reach to reduce the balance block impact on the rotary inertia of rotor assembly so that the rotary inertia of rotor assembly further reduces, response speed reaction is faster shortened further with response time.
In sum, this utility model rotor assembly have that rotary inertia is smaller, fast response time and the advantage such as response time is short.
【Accompanying drawing explanation】
Fig. 1 is the axonometric projection schematic diagram of this utility model rotor assembly；
Fig. 2 is the exploded isometric perspective view of described rotor assembly；
Fig. 3 is the axonometric projection schematic diagram of the rotor core of described rotor assembly；
Fig. 4 is the orthographic projection schematic front view of described rotor core；
Fig. 5 is the axonometric projection schematic diagram of the balance block of described rotor assembly；
Fig. 6 is the axonometric projection schematic diagram of described balance block other direction；
Fig. 7 is the orthographic projection diagrammatic side-view cross-sectional schematic diagram of described balance block；
Fig. 8 is the axonometric projection schematic diagram of prior art rotor assembly；
Fig. 9 is the exploded isometric perspective view of rotor assembly described in prior art；
Figure 10 is the axonometric projection schematic diagram of the rotor core of rotor assembly described in prior art；
Figure 11 is the axonometric projection schematic diagram of the balance block of rotor assembly described in prior art；
Figure 12 is the axonometric projection schematic diagram balancing block other direction described in prior art；
Figure 13 is the orthographic projection diagrammatic side-view cross-sectional schematic diagram balancing block described in prior art.
[detailed description of the invention]
Below in conjunction with each accompanying drawing, this utility model is described in further detail.
See Fig. 1 to Fig. 7, a kind of rotor assembly 40, for small-sized or micromachine, this is small-sized or micromachine is the most again for respirator, and rotor assembly 40 includes rotating shaft 41, the rotor core 42 being arranged in this rotating shaft 41, even number of permanent magnets 43 and two pieces of balance blocks 44;Described rotor core 42 be provided with the central through hole 422 of described rotating shaft 41 adaptation and with the axially extending bore 421 of described permanent magnet 43 equivalent amount, each permanent magnet 43 is pressed into fixed in each axially extending bore 421 of described rotor core 42, two pieces of balance blocks 44 are close to the both ends of the surface of described rotor core 42 respectively, and be sleeved in described rotating shaft 41 by respective first central through hole 449 respectively, two pieces of balance blocks 44 block each permanent magnet 43 from the two ends of described rotor core 42, make each permanent magnet 43 not move axially；At least two the first axially extending bore 429 it is evenly arranged with on described rotor core 42, respectively the effect of this first axially extending bore 429 is the quality in order to reduce rotor core 42, thus reach reduce the rotor core 42 impact on the rotary inertia of rotor assembly 40 so that the rotary inertia of rotor assembly 40 is smaller, fast response time and response time short.Figure depicts two pairs of permanent magnets 43.Rotor core 42 is to be formed by multi-disc rotor chip superposition is fixing.
Seeing Fig. 2 to Fig. 4, each first axially extending bore 429 lays respectively between each axially extending bore 421 and central through hole 422.
See Fig. 2 to Fig. 4, described first axially extending bore 429 and described axially extending bore 421 equivalent amount, and it is respectively arranged with described first axially extending bore 429 between each axially extending bore 421 and central through hole 422.Figure depicts two pairs of permanent magnets 43, and four the first axially extending bores 429 and four axially extending bores 421.
nullSee Fig. 4,The axial orthographic projection figure of described first axially extending bore 429 includes inner circle segmental arc 4291 successively、First straightway 4292、First oblique line section 4293、Outer line segment 4294、Second oblique line section 4295 and the second straightway 4296,Wherein inner circle segmental arc 4291 is close with central through hole 422 and has same central axis,Outer line segment 4294 is near corresponding axially extending bore 421,First straightway 4292 and the second straightway 4296 are parallel to each other,First oblique line section 4293 is connected with the first circular arc 4297 with the first straightway 4292 and the second straightway 4296 respectively with the second oblique line section 4295,First straightway 4292 is connected with the second circular arc 4298 with inner circle segmental arc 4291 respectively with the second straightway 4296,First oblique line section 4293 is connected with three-arc 4299 with outer line segment 4294 respectively with the second oblique line section 4295.This first axially extending bore 429 is similar to mounting hole, and this special shape of this first axially extending bore 429 is repeatedly tested by applicant, and effect is optimal.
Seeing Fig. 1, Fig. 2 and Fig. 5 to Fig. 7, described balance block 44 includes the stopper portions 441 being close to described rotor core 42 end face and for imitating the balance portion 442 of the balance of the most described rotor assembly, and the external diameter in this balance portion 442 is less than the external diameter of described stopper portions 441;When two pieces of balance blocks 44 are close to the both ends of the surface of described rotor core 42 respectively, each permanent magnet 43 on described rotor core 42 is all covered in by respective stopper portions 441 respectively.The effect of the stopper portions 441 of this balance block 44 is to ensure that each permanent magnet 43 does not exposes, and prevents that each permanent magnet 43 is exposed to get rusty outside, and makes each permanent magnet 43 not move axially, and makes each permanent magnet 43 fixing more firm.And the effect in the balance portion 442 of this balance block 44 is the balance being imitated the most whole rotor assembly 40 by borehole and/or groove in balance portion 442.Balance block 44 is divided into stopper portions 441 and balance portion 442 two parts, and make the external diameter external diameter less than stopper portions 441 in balance portion 442, purpose mainly reduces the diameter at the balance portion 442 doing duplicate removal balance, thus reaching the impact reducing whole balance block 44 to the rotary inertia of rotor assembly 40 so that the rotary inertia of rotor assembly 40 is less, response speed is faster shorter with response time.
Seeing Fig. 6 and Fig. 7, the end face of the stopper portions 441 of described balance block 44 is provided inwardly with having the groove 4411 of same central axis with the first central through hole 449；This groove 4411 will not make each permanent magnet 43 on described rotor core 42 expose, say, that the internal diameter of groove 4411 is less than the distance between two relative axially extending bores 421.The effect of the groove 4411 of this balance block 44 is the quality in order to reduce balance block 44, thus reach to reduce the balance block 44 impact on the rotary inertia of rotor assembly 40 so that the rotary inertia of rotor assembly 40 further reduces, response speed reaction is faster shortened further with response time.
Seeing Fig. 1, Fig. 2 and Fig. 5 to Fig. 7, the circumferential end surfaces in the balance portion 442 of described balance block 44 is provided with a circle V-groove 4422.The Main Function arranging V-groove 4422 is to facilitate rotor assembly 40 to do bit location location when duplicate removal balances, the also effect of this V-groove 4422 can also reduce the quality balancing block 44, thus reach to reduce the balance block 44 impact on the rotary inertia of rotor assembly 40 so that the rotary inertia of rotor assembly 40 further reduces, response speed reaction is faster shortened further with response time.
This utility model has the gross mass of the rotor assembly of a model to be 28.23 grams, and volume is 3633.40 cubic millimeters, and axial rotator inertia moment is 964.77 grams of * square millimeters；And the gross mass of the rotor assembly of the same specification of prior art is 37.03 grams, volume is 4700.09 cubic millimeters, and axial rotator inertia moment is 1368.69 grams of * square millimeters.Comparison by above-mentioned data, this utility model rotor assembly also exists obvious advantage than the rotor assembly of prior art, for with the small-sized of this rotor assembly or time micromachine is applied on respirator, the response time of respirator can be shortened, accelerate the response speed of respirator, make patient to be treated timely, the state of an illness alleviating patient is had certain help.
Embodiment described above only have expressed preferred implementation of the present utility model, and it describes more concrete and detailed, but therefore can not be interpreted as the restriction to this utility model the scope of the claims；It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model；Therefore, all equivalents done with this utility model right and modification, the covering scope of this utility model claim all should be belonged to.
Claims (10)
1. a rotor assembly, for small-sized or micromachine, the rotor core (42) including rotating shaft (41), being arranged in this rotating shaft (41), even number of permanent magnets (43) and two pieces of balances block (44)；Described rotor core (42) is provided with the central through hole (422) adaptive with described rotating shaft (41) and the axially extending bore (421) with described permanent magnet (43) equivalent amount, each permanent magnet (43) is pressed into fixed in each axially extending bore (421) of described rotor core (42), two pieces of balances block (44) are close to the both ends of the surface of described rotor core (42) respectively, and be sleeved in described rotating shaft (41) by respective first central through hole (449) respectively, two pieces of balances block (44) block each permanent magnet (43) from the two ends of described rotor core (42), each permanent magnet (43) is made not move axially；It is characterized in that:
At least two the first axially extending bore (429) it is evenly arranged with on described rotor core (42).
Rotor assembly the most according to claim 1, it is characterised in that:
Each first axially extending bore (429) lays respectively between each axially extending bore (421) and central through hole (422).
Rotor assembly the most according to claim 2, it is characterised in that:
nullThe axial orthographic projection figure of described first axially extending bore (429) includes inner circle segmental arc (4291) successively、First straightway (4292)、First oblique line section (4293)、Outer line segment (4294)、Second oblique line section (4295) and the second straightway (4296)，Wherein inner circle segmental arc (4291) is close with central through hole (422) and has same central axis，Outer line segment (4294) is near corresponding axially extending bore (421)，First straightway (4292) and the second straightway (4296) are parallel to each other，First oblique line section (4293) is connected with the first straightway (4292) and the second straightway (4296) the first circular arc (4297) respectively with the second oblique line section (4295)，First straightway (4292) is connected with inner circle segmental arc (4291) the second circular arc (4298) respectively with the second straightway (4296)，First oblique line section (4293) is connected with three-arc (4299) with outer line segment (4294) respectively with the second oblique line section (4295).
Rotor assembly the most according to claim 1, it is characterised in that:
Described first axially extending bore (429) be respectively arranged with described first axially extending bore (429) between described axially extending bore (421) equivalent amount, and each axially extending bore (421) and central through hole (422).
5. according to the rotor assembly described in any one of Claims 1-4, it is characterised in that:
Described balance block (44) includes the stopper portions (441) being close to described rotor core (42) end face and is used for imitating the balance portion (442) of the balance of the most described rotor assembly, and the external diameter in this balance portion (442) is less than the external diameter of described stopper portions (441)；When two pieces of balances block (44) are close to the both ends of the surface of described rotor core (42) respectively, each permanent magnet (43) on described rotor core (42) is all covered in by respective stopper portions (441) respectively.
Rotor assembly the most according to claim 5, it is characterised in that:
The end face of the stopper portions (441) of described balance block (44) is provided inwardly with having the groove (4411) of same central axis with the first central through hole (449)；This groove (4411) will not make each permanent magnet (43) on described rotor core (42) expose.
Rotor assembly the most according to claim 5, it is characterised in that:
The circumferential end surfaces in the balance portion (442) of described balance block (44) is provided with a circle V-groove (4422).
8. the rotor core (42) on rotor assembly, this rotor core (42) is provided with central through hole (422) and even number axially extending bore (421)；It is characterized in that:
At least two the first axially extending bore (429) it is evenly arranged with on described rotor core (42).
Rotor core (42) on rotor assembly the most according to claim 8, it is characterised in that:
Described first axially extending bore (429) be respectively arranged with described first axially extending bore (429) between described axially extending bore (421) equivalent amount, and each axially extending bore (421) and central through hole (422).
Rotor core (42) on rotor assembly the most according to claim 9, it is characterised in that:
nullThe axial orthographic projection figure of described first axially extending bore (429) includes inner circle segmental arc (4291) successively、First straightway (4292)、First oblique line section (4293)、Outer line segment (4294)、Second oblique line section (4295) and the second straightway (4296)，Wherein inner circle segmental arc (4291) is close with central through hole (422) and has same central axis，Outer line segment (4294) is near corresponding axially extending bore (421)，First straightway (4292) and the second straightway (4296) are parallel to each other，First oblique line section (4293) is connected with the first straightway (4292) and the second straightway (4296) the first circular arc (4297) respectively with the second oblique line section (4295)，First straightway (4292) is connected with inner circle segmental arc (4291) the second circular arc (4298) respectively with the second straightway (4296)，First oblique line section (4293) is connected with three-arc (4299) with outer line segment (4294) respectively with the second oblique line section (4295).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620386509.9U CN205753713U (en) | 2016-05-03 | 2016-05-03 | Rotor assembly and rotor core thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620386509.9U CN205753713U (en) | 2016-05-03 | 2016-05-03 | Rotor assembly and rotor core thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205753713U true CN205753713U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620386509.9U Active CN205753713U (en) | 2016-05-03 | 2016-05-03 | Rotor assembly and rotor core thereof |
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| CN (1) | CN205753713U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953443A (en) * | 2017-03-28 | 2017-07-14 | 安徽美芝制冷设备有限公司 | Rotor, motor and compressor for motor |
-
2016
- 2016-05-03 CN CN201620386509.9U patent/CN205753713U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953443A (en) * | 2017-03-28 | 2017-07-14 | 安徽美芝制冷设备有限公司 | Rotor, motor and compressor for motor |
| CN106953443B (en) * | 2017-03-28 | 2023-11-28 | 安徽美芝制冷设备有限公司 | Rotor for motor, motor and compressor |
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