CN1122066A - Armature of small DC electric motor - Google Patents
Armature of small DC electric motor Download PDFInfo
- Publication number
- CN1122066A CN1122066A CN 95106810 CN95106810A CN1122066A CN 1122066 A CN1122066 A CN 1122066A CN 95106810 CN95106810 CN 95106810 CN 95106810 A CN95106810 A CN 95106810A CN 1122066 A CN1122066 A CN 1122066A
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- China
- Prior art keywords
- commutator
- coil
- unit
- fixed
- armature
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- Granted
Links
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 6
- 230000008033 biological extinction Effects 0.000 abstract 1
- 239000012212 insulator Substances 0.000 description 10
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Dc Machiner (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Current Collectors (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a small direct-current motor armature which can avoid wire break of a coil and crack of an arc extinction component and the manufacturing method of the armature. A commutator unit (3) comprises a commutator bracket (3a) which is provided with a cylinder part embedded in an axis (1) and a flange part (3b) and a commutator (3c). The outer edge of the flange part (3b) of the commutator bracket (3a) is provided with a vertical wall (3d) roughly along the axis direction. The manufacture of the armature which is provided with the commutator unit (3) comprises four processes: when an armature iron core (2) is pressed into the axis (1) formally, the commutator unit (3) is pressed into the axis temporarily; a coil (4) is coiled round the salient pole of the armature iron core (2); the commutator unit (3) is embedded and fixed relative to the axis (1); the coil (4) is shaped.
Description
The invention relates to the small DC electric motor pivot that is used for headphone stereophonic sound system and portable CD-audio player etc. and the invention of manufacture method thereof.
Example to the small DC electric motor pivot that is used for headphone stereophonic sound system and portable CD-audio player etc. is illustrated with reference to the accompanying drawings.In Fig. 6, Fig. 7, on the axle 21 armature core 22 is installed.Armature core 22 is stacked by the multi-disc lamination and constitute, form a plurality of salient poles on its outer periphery.The upper surface of armature core 22 and lower surface are clipped in the inside with insulator 26 coverings, armature core 22 insulated bodys 26.Reach in the above on each salient pole of the armature core 22 that following insulated body 26 covers, from insulator 26 above, begin coiling.And at insulator 26, on the place part more in the inner part of twining than coil 24, with the whole outstanding wall 26a that is approximately perpendicular to above the insulator 26 that forms of this insulator.
The place that makes progress again at the armature core 22 of axle 21 is installed with commutator unit 23.Commutator unit 23 is made of commutator support 23a and the commutator 23c that is installed in commutator support 23a surface.Commutator support 23a is made of with the flange part 23b that is formed at the bottom of this cylindrical portion the cylindrical portion that is pressed into axle 21.
Outer peripheral face in the cylindrical portion of commutator support 23a is installed with a plurality of part commutator 23c cylindraceous that are.Between each commutator 23c and 23c, form the slit that current switching is used.And the bottom of each commutator 23c curves the right angle laterally, extends to outer circumferential side above flange part 23b simultaneously.The part of commutator 23c above such flange part 23b is drawn out to than being formed at the more outside outside of wall 26a on the insulator 26, becoming coil connecting portion 28.End at the leading section coiling coil 24 of this coil connecting portion 28.
And, be contained in commutator 23c on the flange part 23b, than flange part 23b more in the outer part and also than wall 26a more in the inner part above the blowout unit 25 of annular is installed, soldering is connected between this blowout unit 25 and each commutator 23c.Blowout unit 25 plays a part to suppress the spark that brush (not shown go out) slides, produces when switching the electric current that leads to coil 24 on commutator 23c.
The above-mentioned small-sized DC motor that is made of axle 21, armature core 22, commutator unit 23 as shown in Figure 7, is installed on the inside of the rotor case 29 of cup-shaped, and can rotates freely.At the inner peripheral surface of rotor case 29, annular magnet 30 is installed.The salient pole of the inner peripheral surface of magnet 30 and armature core 22 in opposite directions and keep certain clearance.Thereby, the brush that electric current never illustrates, through commutator 23c, coil connecting portion 28 flows into coil 24, and armature core 22 is sucted, and axle 21 is subjected to drive rotation.And, be switched to next commutator 23c in regular turn with the commutator 23c of the not shown brush sliding contact that goes out in case axle 21 rotates, and also having switched the electric current of supplying with coil 24 simultaneously, axle 21 is rotation continuously.
When coil 24 was around in the salient pole of top such armature core 22, the situation that blowout unit 25 breaks, coil 24 breaks took place near inner periphery one side, hinders mutually with the blowout unit 25 that is installed on the commutator unit 23 in the part of coil 24 sometimes.Thereby, in order to prevent coil 24 near inner periphery, on the insulator 26 of commutator unit 23 1 sides, form wall 26a, but in order to do motor flatly, the height dimension of wall 26a can not be done greatlyyer than the height dimension of coil 24, so can not give full play to its effect.
And, twining on the salient pole of coil 24 and be pre-formed wall 26a, the coil 24 that twines is subjected to the influence of the outer circumference surface of wall 26a, direction from axle, be wound in circular-arc, integral body becomes fan-shaped, causes that stress that coil 24 is added on commutator support 26 increases and the generation of the problems such as increase of the resistance value that coil 24 is own.
The objective of the invention is to address the above problem, provide a kind of when coil forming coil and blowout unit do not hinder the small DC electric motor pivot and the manufacture method thereof that can prevent that coil breakage and blowout unit from breaking etc. mutually.
Fig. 1 is the profile of the embodiment of expression small DC electric motor pivot of the present invention.
Fig. 2 is the plane graph with presentation graphs 1 identical embodiment.
Fig. 3 is the profile of a part of the manufacturing process of the same small DC electric motor pivot of expression.
Fig. 4 represents the decomposing section of another embodiment of small DC electric motor pivot of the present invention.
Fig. 5 is the profile of the same small DC electric motor pivot.
Fig. 6 is the profile of the example of the existing small DC electric motor pivot of expression.
Fig. 7 is the section plan of the example of the suitable miniature motor of the above-mentioned armature of expression.
Embodiment to small DC electric motor pivot of the present invention and manufacture method thereof is illustrated with reference to the accompanying drawings.In Fig. 1, Fig. 2, the chimeric armature core 2 of fixing on axle 1.Armature core 2 constitutes by many laminations are laminated, its peripheral several salient poles that form.Electrode iron core 2 top with below be abutted against insulator 6, armature core 2 insulated bodys are sandwiched in wherein.On each salient pole of armature core 2, beginning is around coil 4 above insulator 6.
On axle 1, commutator unit 3 is gone in upper end one side pressure from Fig. 1.Commutator unit 3 is made of commutator support 3a and commutator 3c.Commutator 3a has with respect to axle 1 chimeric fixing cylindrical portion and the flange part 3b that is formed at this cylindrical portion bottom.A plurality of protuberance 3b on the outer peripheral portion formation of flange part 3b roughly is erected in axially form gap 3f between each protuberance 3d again.
A plurality of part commutator 3c cylindraceous that are are installed on the outer circumference surface of the cylindrical portion of commutator support 3a.Between each commutator 3c, form the slit that current switching is used.The bottom of each commutator 3c roughly curves the right angle, embeds in the above-mentioned gap 3f to outer circumferential sides, and simultaneously, leading section further extends, forms coil connecting portion 3e laterally from gap 3f.In the end that leading section such, connecting portion 3e is twining coil 4.On commutator support 3a, than above-mentioned protuberance 3d place more to the inside annular blowout unit 5 is installed, be connected with soldering between blowout unit 5 and each commutator 3c.The upper surface of the part that roughly curves the right angle of the lower surface of blowout unit 5 and commutator 3c is abutted against.Blowout unit 5 plays a part to suppress (not shown) brush generation spark when switching the electric current that leads to coil 4 that slides on commutator 3c.
Aforesaid armature, rotation is installed on the motor field frame of small-sized DC motor freely.The specific commutator 3c of commutator unit 3 has the brush that is connected on (not shown) power supply to contact with it.And the magnet of the salient pole of the armature core 2 that coil 4 twines and the inner peripheral surface that is installed in (not shown) motor field frame across certain clearance in opposite directions.Thereby, in case (not shown go out) power supply through brush, commutator 3c, coil connecting portion 3e to coil 4 power supplies because and the effect of the magnetic force between (not shown go out) magnet, armature core 2 is sucted, axle 1 is subjected to rotation and drives.Because the commutator 3c of the rotation of axle 1, brush contact switches to next commutator 3c in regular turn, also switched the electric current of supplying with coil 4 simultaneously, so axle 1 rotation continuously.
Manufacture method embodiment to above-mentioned small DC electric motor pivot is illustrated below.As shown in Figure 3, at first, behind chimeric fixed armature 2 on the axle 1, commutator unit 3 is pressed into the upper end that axle 1 temporarily is fixed on axle 1, to the salient pole winding around 4 of armature core 2.Then commutator unit 3 is pressed into the position of below regulation from the upper end of axle 1, makes the outer circumference surface of coil 4 near flange part 3b.Then with instrument (not shown) will be around the coil on the salient pole of armature core 24 from axial both sides while compressing shaping, coil 4 height dimension is in the axial direction reduced.So just can produce Fig. 1, small DC electric motor pivot as shown in Figure 2.And, the commutator unit 3 of above-mentioned operation is pressed into the operation of assigned position and can carries out simultaneously with the operation of collapse coil shaping on one side on one side.
In the small DC electric motor pivot of said structure; commutator unit 3; to the salient pole coiling 4 of armature core 2 time, temporarily be fixed in and be not subject to coil upper end 4 influences, axle 1; because protuberance 3d that can protection blowout unit 5 usefulness places than coil 4 sufficiently high positions, thereby can prevent the mutual obstruction of the coil 4 that twines and blowout unit 5 fully.And with rectification unit 3 from temporary fixed state transitions to assigned position fixing after, coil 4 is highlighted the 3d of portion with blowout unit 5 and separates fully, thereby mutual obstruction does not take place.Blowout unit 5 breaks, the unfavorable condition of coil breakage thereby can eliminate.Winding around under the temporary fixed situation in commutator unit 3 then is fixed on commutator unit 3 on the position of regulation again, therefore, even the height of the above-mentioned protuberance 3d of protection blowout unit 5 usefulness is low good, can reduce the axial dimension of motor.
And, form protuberance 3d in the outer edge of the flange part 3b of temporary fixed commutator support 3a, thereby when coil 4 is around in the salient pole of armature core 2, can under the condition that does not have the obstacle that hinders coiling on the armature core 2, coil 4 be around in salient pole.Therefore, during coiling 4, can go ahead haply with respect to the bearing of trend of salient pole around, the total length of coil shortens, its winding resistance diminishes, can improve the characteristic of small-sized DC motor, also can abirritation at the stress of the commutator support 3a of coil 4.
Change example to embodiments of the invention is illustrated below.Fig. 4, embodiment shown in Figure 5 be, the flange part 3b of the part of commutator support 3a, the outer circumferential sides bottom surface sections left breach and made the embodiment that winding is emitted the 3g of portion.Emit the 3g of portion by means of forming winding, when coil 4 was carried out shaping, the part of coil 4 entered winding and emits in the 3g of portion, and therefore, the stress that coil 4 is acted on the commutator support 3a relaxes more.
According to the present invention, the commutator unit possesses: the cylindrical portion that is embedded on the axle and the commutator support of flange part are arranged; With the commutator on the outer circumference surface of the cylindrical portion that is fixed in the commutator support.Outer edge at the flange part of commutator support, owing to have and approximately be erected in axial protuberance, thereby not only can coil one side and blowout unit one side be separated with protuberance, when coil forming, prevent to hinder mutually between coil and the blowout unit, and, the sort ofly compare with existing in situation about on the armature core wall being located on the insulator, the position that can make wall is near pivot, like that the situation lower coil also can around more near pivot, thereby can do the diameter of motor littler.
Manufacturing method according to the invention, the small DC electric motor pivot comprises following operation at least: with armature core with respect to axle chimeric fixing in, the commutator unit is fixed in the operation of temporary position on the axle; The operation of coiling on the chimeric salient pole that is fixed in the armature core on the axle; To be fixed in the operation of assigned position with respect to the commutator unit that axle is fixed in temporary position; And the operation of giving the coil shaping on the salient pole of armature core.When therefore winding the line, the protuberance of commutator unit is in and exceeds on the abundant position of coil, and coil does not hinder blowout unit, therefore, can avoid coil breakage and blowout unit to break.And, when coiling, the thing that does not exist obstruction on armature core, to wind the line, therefore, and can the high accuracy coiling, can suppress in lower level the resistance of coil with to the stress of commutator support.Moreover; after the coil shaping; the commutator unit is fixed on the assigned position on the axle; therefore; the protuberance that is arranged on the commutator element for the protection blowout unit can reduce its height; motor size in the axial direction can reduce, and also can really prevent the mutual obstruction between coil and the blowout unit after the commutator unit formally is pressed into.
Claims (3)
1. small-sized DC motor armature, fixing armature core in its upper edge axially-aligned with a plurality of salient poles, and by the commutator support be installed in the commutator unit that a plurality of commutators on this commutator support constitute, on each salient pole of described armature core around the regulation number of turn coil, on described commutator unit, fixing blowout unit, it is characterized in that described commutator unit comprises: the chimeric commutator support that is fixed in the cylindrical portion on the described axle and is formed at the flange part of this cylindrical portion is arranged; And be fixed in commutator on the outer circumference surface of cylindrical portion of this commutator support, in the outer edge of the flange part of described commutator support the protuberance of roughly holding up is vertically arranged.
2. small DC electric motor pivot according to claim 1 is characterized in that, forms winding and emit portion on the commutator support.
3. the manufacture method of a small DC electric motor pivot, it is characterized in that, at least possesses following operation: (a) in chimeric fixed armature iron core with respect to axle, to include, the commutator unit that has the commutator support of the protuberance of roughly holding up vertically and be fixed in the commutator on this commutator support in the outer edge is fixed in the operation on the temporary position on the axle; (b) operation of coiling on the chimeric salient pole that is fixed in the armature core on the axle; (c) will be fixed to operation on the assigned position with respect to the commutator unit that axle is fixed in temporary position; (d) will be around the operation of shaping in addition of the coil on the salient pole of armature core.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06150331A JP3075921B2 (en) | 1994-06-08 | 1994-06-08 | Armature of small DC motor and method of manufacturing the same |
| JP150331/1994 | 1994-06-08 | ||
| JPP06-150331 | 1994-06-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1122066A true CN1122066A (en) | 1996-05-08 |
| CN1050946C CN1050946C (en) | 2000-03-29 |
Family
ID=15494681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95106810A Expired - Fee Related CN1050946C (en) | 1994-06-08 | 1995-06-07 | Armature of small DC electric motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3075921B2 (en) |
| CN (1) | CN1050946C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935142A (en) * | 2015-05-31 | 2015-09-23 | 郭富强 | DC motor and application thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4516471B2 (en) * | 2005-04-14 | 2010-08-04 | アスモ株式会社 | Armature core, armature, armature core manufacturing method, and armature manufacturing method |
-
1994
- 1994-06-08 JP JP06150331A patent/JP3075921B2/en not_active Expired - Fee Related
-
1995
- 1995-06-07 CN CN95106810A patent/CN1050946C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935142A (en) * | 2015-05-31 | 2015-09-23 | 郭富强 | DC motor and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07336951A (en) | 1995-12-22 |
| JP3075921B2 (en) | 2000-08-14 |
| CN1050946C (en) | 2000-03-29 |
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