CN1139310A - Housing and small direct current motor using the same - Google Patents
Housing and small direct current motor using the same Download PDFInfo
- Publication number
- CN1139310A CN1139310A CN 96105100 CN96105100A CN1139310A CN 1139310 A CN1139310 A CN 1139310A CN 96105100 CN96105100 CN 96105100 CN 96105100 A CN96105100 A CN 96105100A CN 1139310 A CN1139310 A CN 1139310A
- Authority
- CN
- China
- Prior art keywords
- shell
- case
- holder lid
- bracket
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- Motor Or Generator Frames (AREA)
- Dc Machiner (AREA)
Abstract
A housing to reduce electric noise and to improve the release strength of a bracket and a small direct current motor using the same. The housing comprises a metal case, and a bracket engaged with the opening of the case, wherein a groove is formed from the outside on the entire outer periphery of the bracket. The outer periphery of the bracket is formed slightly larger than the diameter of the opening of the case. Thus, when the bracket is press-injected in the case, the outer periphery of the bracket has elastic properties in the radial direction, and hence the bracket can be press-injected without deflecting the case, and the adhesive properties can be improved. Even if the force from the inside is developed at the bracket, the force is developed in the direction of intruding the outer periphery into the opening of the case by the groove, and the bracket is scarcely drawn.
Description
The invention relates to the case that forms for the radiation that prevents electric clutter and use the small direct current motor of this case, particularly be fit to be loaded into the small direct current motor on the sound machine with long wave receiving system.
Known having in the opening of the cylinder type metal shell that the end is arranged loaded onto the holder lid combination of tabular or plate-like and formed case, particularly as the case of small direct current motor.Shown in the 4th figure, this kind seating means mat is packed into to hold in the palm in the opening that round-ended cylinder shell C is arranged and is covered B, and with the D of fragment portion supporting fastening, and it is crooked to the inside to form edge of opening.
This kind structure, when with edge of opening Ca fastening, shown in the 5th figure, it does not have the part of fastening can produce stress deformation and cause gap S.Therefore, though shell and holder lid between be idiostatic on direct current, in interchange, produced potential difference, so can produce long clutter.When being installed on the sounder with long-wave receiver, this kind motor then can make long wave overlapping and cause the problem of sound equipment noise.
As to prevent planting here peristome that noise then must make about full periphery of holder lid and shell closely embedding.
Yet, make this shell good with the adherence of the telescoping part of holder lid, must be with this precision of both out of roundness and the heart size of fitting portion etc. improve, thereby cause cost unfavorable; And as, then can cause shell crooked and be and contact and adherence is reduced, and make the friction minimizing of supporting and get loose easily for the intensity that gets loose that improves the holder lid strengthens chimeric tightness.
The edge of opening of this shell particularly can cause bigger crooked for deriving indentation, there that current supply line establishes.As strengthening chimeric tightness, the edge of opening of shell is enlarged at this gradually, cause stipule to get loose easily on the contrary for improving adherence.
The 1st purpose of the present invention is: prevent that above-mentioned electric clutter from radiating to the outside.
The 2nd purpose of the present invention is: keep the 1st purpose, improve the intensity that gets loose of stipule simultaneously.
In order to reach above-mentioned problem, the technical scheme that the present invention takes is as follows:
Wherein, a kind of case, be in the metal holder lid of this shell aperture portion by metal shell and embedding to be combined, it is characterized in that this metal holder lid peripheral part is formed with groove by the outside, the periphery of this metal holder lid is slightly larger than the opening of shell simultaneously, this case is that this metal holder lid is pressed into aforesaid shell, makes its embedding on shell and form.
Wherein, aforesaid holder lid is for tabular.
Wherein, aforesaid metal holder lid is the tazza shape.
Wherein, a kind of small direct current motor, have and be supported on metal shell and embedding and on the case that the holder lid of this shell aperture portion combines and be revolution that can free rotating state and provide this magnet that turns round sub-magnetic field and the electric supply installation of supply electric power, it is characterized in that: the peripheral part of this holder lid is formed with groove by the outside, the periphery of this metal holder lid is slightly larger than the peristome of shell simultaneously, this metal holder lid is pressed in the aforesaid shell, its embedding in shell.Shown invention, belonging to metal shell and embedding on the case that the holder lid of this shell aperture portion is combined, cover peripheral part in holder and be formed with groove by the outside, the periphery of holder lid is slightly larger than the peristome of shell simultaneously, through asking lid to be pressed into aforementioned shell its embedding on shell and gets final product.
The shape of holder lid, as directed invention is tabular or the tazza shape gets final product.
Again, one uses the small-sized turning motor of this kind case, shown in the invention, be to have a metallic casing, but with a free rotary ground supporting in revolution of by embedding on the case that the holder lid of this shell aperture portion is formed, an and electric supply installation person that this magnet that turns round sub-magnetic field and a supply electric power can be provided, wherein, the peripheral part outside in holder lid is formed with groove, and the periphery of holder lid is slightly larger than the peristome of shell simultaneously, should hold in the palm to cover to be pressed into aforementioned shell and embedding in shell get final product.
The present invention has following positive effect:
According to above-mentioned constituent apparatus, when the peristome of shell has been pressed into holder and has covered, owing to being formed with groove, the peripheral part at the holder lid make periphery have elasticity in radial direction, therefore holder can be placed on the not crooked state of outer cover body is pushed down in shell, to improve its adherence, simultaneously because groove is to be formed by the outside, so for power from the inboard, because periphery is to go deep into the peristome of shell, thereby make the holder lid be difficult to get loose.
According to above-mentioned constituent apparatus, owing to the thickness setting of holder lid can be become thin thereby make that shroud body can slimming.
According to above-mentioned constituent apparatus, be can be with speed governing component built-ins such as electronic controllers in wherein.
According to above-mentioned constituent apparatus, in the time will asking lid to be pressed into the peristome of shell, owing to being formed with groove, the peripheral part at the holder lid make periphery have elasticity in radial direction, therefore holder can be placed on the not crooked state of outer cover body is pushed down into and improves adherence, so, shell and the unlikely generation alternating current potential difference of holder lid.Therefore, use the small direct current motor machine of this case long clutter can not take place.
Followingly embodiments of the invention are elaborated with reference to accompanying drawing:
The 1st figure is the significant points cross section front elevation of the 1st embodiment of case of the present invention;
The 2nd figure is the case of the 2nd embodiment of the present invention and significant points cross section front elevation with the small direct current motor of this case;
The 3rd figure is the electric clutter data comparison diagram of case of the present invention and known case;
The 4th figure is the cross section front elevation of significant points of the composite construction of known case;
The 5th figure is the plane graph according to the 4th figure assembled state.
(the 1st embodiment)
The 1st figure is the cross section front elevation of significant points of the 1st embodiment of case of the present invention.Case H is used to small direct current motor, and its peristome 1a in the metal shell 1 that the round-ended cylinder shape is arranged is provided with the 1b of fragment portion, is fixed with metal holder lid 2 on the 1b of this fragment portion.Can be known by the expanded view of A portion and to show, on the peripheral part 2a of this tabular metal holder lid 2, be formed with groove 2b around full week by the outside, its degree of depth is about half of thickness of slab and its cross section is V-shape.
It is the opening that is slightly larger than aforementioned metal shell 1 that 2 periphery is covered in this kind holder.
This kind groove 2b be can by the punch press handling ease go out.
Therefore, cover 2 when being pressed in aforementioned peristome 1a when holding in the palm, through the groove 2b of V-shape, peripheral part 2a can produce slight strain in radial direction, and makes the peristome 1a of metal shell 1 can crooked adherence down not take place.
Again, in case with regard to the holder after embedding lid 2 itself because for the power from the inboard gets loose because peripheral part has the V-shape groove of opening laterally, so periphery produces a power that penetrates with the inwall direction of the 1a of shell aperture portion, the intensity that gets loose becomes greatly.(the 2nd embodiment)
The 2nd figure is the cross section front elevation of the significant points of case the 2nd embodiment of the present invention, and holder is covered 22 and is tazza type shape, and in its inside, speed control loop part 3 is to be arranged in wiring board 4 and to be integrated with brush pedestal 5.
By the expanded view of B portion as can be known, the V-shape groove 22b of feature of the present invention goes up in the edge part 22a of cup to be dug in the veer ecto-entad.The holder lid 22 of this tazza type shape is also identical with previous embodiment, makes its periphery be slightly larger than the opening of metal shell 11.
Among the figure, 11a be the expression shell 11 peristome, by the 11b of fragment portion be situated between brush pedestal 5 and will hold in the palm cover 22 bear fixing.This brush pedestal 5 is provided with a pair of brush 6, and constitutes the electric supply installation that a rectifier 7 and that is disposed at the sub-R of revolution can be given supply of electric power revolution.Foreign side in revolution is separated with under the space, and rubber magnet 8 is installed on the shell, only magnetic field is supplied to the sub-R of revolution.
11c is the breach that is equipped on shell for a part of 4a that derives the aforementioned printed circuit board (PCB) of using as current supply line 4 in addition.
When the holder lid 22 of the small direct current motor of formation like this similarly is pressed into the 11a of shell aperture portion with aforesaid embodiment, because V-shape groove 22b, the edge part 22a that makes cup is in the slightly upright shape of changing of radial direction, and makes the peristome 11a of shell 11 can be in not producing crooked adherence down.
Again, in case the lid of the holder after embedding 22 just is not easy to get loose, its principle is identical with previous embodiment.
Though above-mentioned case is used in small direct current motor for example, be not defined to motor, also can use certainly as small generator and by shell and case and other parts that the holder lid is formed.
Now the oscilloscope graphic data according to the electric clutter shown in the 3rd figure illustrates superiority of the present invention.The clutter oscillogram of the sound machine body the when A of the 3rd figure is the unloaded motor.With this oscillogram A is benchmark, and figure C is the clutter oscillogram of expression when loading the motor of known fastening mode, and figure B is that the clutter oscillogram when adopting motor of the present invention is loaded in expression.Therefore the result can significantly know the situation that clutter of the present invention is lowered.
As mentioned above, because its shell of case of the present invention is good with the adherence of holder lid, so S very close to each other, so for metal case, it is to be fit to be used in one can be loaded in order to the small direct current motor on the sound machine that receives electric clutter, particularly long wave.
And, to the intensity that gets loose, be the effect of going deep into outer casing inner wall to be arranged, and the intensity that gets loose is improved, so can get the good case of resistance to impact owing to groove makes holder cover periphery by inboard and next power.
Claims (4)
1, a kind of case, be in the metal holder lid of this shell aperture portion by metal shell and embedding to be combined, it is characterized in that: this metal holder lid peripheral part is formed with groove by the outside, the periphery of this metal holder lid is slightly larger than the opening of shell simultaneously, this case is that this metal holder lid is pressed into aforesaid shell, makes its embedding on shell and form.
2, case as claimed in claim 1 is characterized in that: aforesaid holder lid is for tabular.
3, case as claimed in claim 1 is characterized in that: aforesaid metal holder lid is the tazza shape.
4, a kind of small direct current motor, have and be supported on metal shell and embedding and on the case that the holder lid of this shell aperture portion combines and be revolution that can free rotating state and provide this magnet that turns round sub-magnetic field and the electric supply installation of supply electric power, it is characterized in that: the peripheral part of this holder lid is formed with groove by the outside, the periphery of this metal holder lid is slightly larger than the peristome of shell simultaneously, this metal holder lid is pressed in the aforesaid shell, its embedding in shell.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP159859/1995 | 1995-06-01 | ||
| JP159859/95 | 1995-06-01 | ||
| JP15985995A JP3313541B2 (en) | 1995-06-01 | 1995-06-01 | Housing and small DC motor using this housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1139310A true CN1139310A (en) | 1997-01-01 |
| CN1057647C CN1057647C (en) | 2000-10-18 |
Family
ID=15702793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96105100A Expired - Fee Related CN1057647C (en) | 1995-06-01 | 1996-05-24 | Housing and small direct current motor using the same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3313541B2 (en) |
| CN (1) | CN1057647C (en) |
| TW (1) | TW363299B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109891717A (en) * | 2016-10-21 | 2019-06-14 | 日本电产三协株式会社 | The fixed structure and motor of cover |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6092089B2 (en) * | 2013-12-24 | 2017-03-08 | ミネベアミツミ株式会社 | DC motor with brush |
| JP6506523B2 (en) * | 2014-10-06 | 2019-04-24 | 日立オートモティブシステムズエンジニアリング株式会社 | Automotive electric rotating machine |
| JP2016174105A (en) * | 2015-03-17 | 2016-09-29 | アスモ株式会社 | Dynamo-electric means |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2796333B2 (en) * | 1989-02-22 | 1998-09-10 | 株式会社日立製作所 | Motor structure and magnetic disk drive using the same |
-
1995
- 1995-06-01 JP JP15985995A patent/JP3313541B2/en not_active Expired - Fee Related
- 1995-06-28 TW TW084106646A patent/TW363299B/en active
-
1996
- 1996-05-24 CN CN96105100A patent/CN1057647C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109891717A (en) * | 2016-10-21 | 2019-06-14 | 日本电产三协株式会社 | The fixed structure and motor of cover |
| CN109891717B (en) * | 2016-10-21 | 2021-02-09 | 日本电产三协株式会社 | Cover fixing structure and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3313541B2 (en) | 2002-08-12 |
| JPH08331789A (en) | 1996-12-13 |
| TW363299B (en) | 1999-07-01 |
| CN1057647C (en) | 2000-10-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |