JPS63287354A - Brushless motor - Google Patents
Brushless motorInfo
- Publication number
- JPS63287354A JPS63287354A JP12115487A JP12115487A JPS63287354A JP S63287354 A JPS63287354 A JP S63287354A JP 12115487 A JP12115487 A JP 12115487A JP 12115487 A JP12115487 A JP 12115487A JP S63287354 A JPS63287354 A JP S63287354A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- side yoke
- stationary side
- yoke
- magnet
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Landscapes
- Brushless Motors (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はブラシレスモータに関し、特に軸受取付構造の
改善されたプラスレスモータに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a brushless motor, and particularly to a plusless motor with an improved bearing mounting structure.
［従来の技術］
第４図に従来の面対向形ブラシレスモータの概要を示す
。図においてｌは固定側ヨーク、２は駆動コイルである
。固定側ヨーク１と軸受ハウジング３がかしめまたはね
じ止めで固定され、軸受ハウジング３に軸受４が圧入ま
たは接着によって固定され、回転軸５を保持する構造と
なフている。[Prior Art] FIG. 4 shows an outline of a conventional surface-facing brushless motor. In the figure, 1 is a stationary yoke, and 2 is a drive coil. The fixed side yoke 1 and the bearing housing 3 are fixed by caulking or screwing, and the bearing 4 is fixed to the bearing housing 3 by press fitting or gluing, so that the rotating shaft 5 is held.
６はマグネット、７は回転側ヨーク、８は回転側ヨーク
７と回転！１ｉＩＩＩ５を一体化させるためのスリーブ
である。6 is a magnet, 7 is a rotating side yoke, and 8 is rotating with the rotating side yoke 7! This is a sleeve for integrating 1iIII5.
［発明が解決しようとする問題点］
上述した従来のブラシレスモータの構造には以下のよう
な欠点がある。[Problems to be Solved by the Invention] The structure of the conventional brushless motor described above has the following drawbacks.
■ 軸受支持に軸受ハウジングを用いているので部品点
数が多い。■ Since a bearing housing is used to support the bearing, there are many parts.
■ 軸受ハウジングはアルミニウム合金または亜鉛合金
をタイカストし、またはアルミニウム合金、黄銅などを
切削加工して作られるが、上下２個の軸受を同軸に保持
するために加工精度が要求される。■ Bearing housings are made by tie-casting aluminum alloy or zinc alloy, or by cutting aluminum alloy, brass, etc., but machining precision is required to hold the upper and lower two bearings coaxially.
■ ヨーク、！Ｍ受ハウシングおよび軸受の組付は工数
が多い。■ York! Assembling the M bearing housing and bearing requires a lot of man-hours.
本発明はこのような従来の欠点を解決し、部品点数か少
なく、千（ｈ受の組付けが容易で、しかも組付は精度が
損われない軸受保持構造を有するブラシレス千−夕を提
供することを目的とする。The present invention solves these conventional drawbacks and provides a brushless bearing having a bearing holding structure with a small number of parts, easy assembly of the bearing, and no loss of accuracy during assembly. The purpose is to
［問題点を解決するための手段］
かかる目的を達成するために、本発明は回転軸を軸受け
する軸受を固定側ヨークが直接保持する構造であること
を特徴とする。[Means for Solving the Problems] In order to achieve the above object, the present invention is characterized in that the fixed side yoke directly holds a bearing that supports the rotating shaft.
［作 用］
本発明によれは、固定側ヨークが直接軸受を保持するの
で、部品点数が少なく、組付けの工程が簡略でき、しか
も上下の軸受の同軸度も確保される。さらに軸受ハウジ
ングを不要としたので、モータの軽量化が可能である。[Function] According to the present invention, since the stationary side yoke directly holds the bearing, the number of parts is small, the assembly process can be simplified, and the coaxiality of the upper and lower bearings is also ensured. Furthermore, since a bearing housing is not required, the weight of the motor can be reduced.
［実施例］ 以下に図面を参照して本発明の詳細な説明する。[Example] The present invention will be described in detail below with reference to the drawings.
第１図に本発明の一実施例の断面を示す。図において、
１１は固定側ヨーク、１２は駆動コイル２およびマグネ
ットの磁極位置を検出するための図示しないホール素子
の配線を行うための回路基板である。第４図に示した従
来例と同一部分は同一参照番号を付して説明を省略する
。本実施例が第４図に示した従来例と最も異なる点は、
軸受ハウジングがなく、固定側ヨーク１１が屈曲部１１
Ａを有し、直接軸受４を保持している点である。FIG. 1 shows a cross section of an embodiment of the present invention. In the figure,
11 is a fixed side yoke, and 12 is a circuit board for wiring the drive coil 2 and a Hall element (not shown) for detecting the magnetic pole position of the magnet. The same parts as in the conventional example shown in FIG. 4 are given the same reference numerals, and the explanation will be omitted. The main difference between this embodiment and the conventional example shown in FIG. 4 is that
There is no bearing housing, and the fixed side yoke 11 is the bent part 11.
A and directly holds the bearing 4.
第２図は固定側ヨーク１１の斜視図である。本例では、
ヨーク１１は上下方向にそれぞれ６個づつの屈曲部１１
Ａを有している。このような屈曲部はプレスなどによる
曲げ加工によって容易に作製可能である。各屈曲部１１
Ａの内面は同一円筒面上にあり、その内径は保持すべき
軸受の外径と実質的に同一にする。または、各屈曲部の
内面が、それぞれ上下方向に先細りの円錐面に沿うよう
にし、ヨーク面における内径は軸受外径と実質的に同一
またはやや大きくし、屈曲部先端における内径を軸受外
径よりやや小さくする。このようにして設けた屈曲部内
に軸受を軽圧入すると、軸受は屈曲部のばね力によって
固定される。軸受の圧入に際して、上下２個の軸受内に
ビンを挿入して２個の軸受を同軸に保持した状態で屈曲
部内に圧入すると、２個の軸受の同軸を容易に保つこと
ができる。軸受圧入後、軸受と屈曲部との隙間に接着剤
を流して軸受と屈曲部とを固着し、軸受保持力を増大さ
せることができる。また軸受と屈曲部の一部に割り溝を
設け、キーを挿入し、または屈曲部の一つと軸受とをね
し止めして、軸受と固定側ヨークとの回転方向の移動を
抑制するようにしてもよい。FIG. 2 is a perspective view of the stationary side yoke 11. In this example,
The yoke 11 has six bent portions 11 in the vertical direction.
It has A. Such a bent portion can be easily produced by bending using a press or the like. Each bent part 11
The inner surface of A is on the same cylindrical surface, and its inner diameter is made substantially the same as the outer diameter of the bearing to be held. Alternatively, the inner surface of each bent portion may be made to follow a tapered conical surface in the vertical direction, and the inner diameter at the yoke surface may be substantially the same as or slightly larger than the outer diameter of the bearing, and the inner diameter at the tip of the bent portion should be made larger than the outer diameter of the bearing. Make it slightly smaller. When the bearing is lightly press-fitted into the bent portion thus provided, the bearing is fixed by the spring force of the bent portion. When press-fitting the bearings, by inserting a bottle into the upper and lower two bearings and press-fitting them into the bent part while holding the two bearings coaxially, the coaxiality of the two bearings can be easily maintained. After the bearing is press-fitted, an adhesive is poured into the gap between the bearing and the bent portion to fix the bearing and the bent portion, thereby increasing the bearing holding force. In addition, a split groove is provided in the bearing and a part of the bent part, a key is inserted, or one of the bent parts and the bearing are screwed together to suppress movement of the bearing and the stationary yoke in the rotational direction. It's okay.
第３図に本発明の他の実施例を示す。本実施例は固定側
ヨーク１３として、第１図に示した実施例における固定
側ヨーク１１と回路基板１２を一体化したものを用いて
いる。このような固定側ヨーク１３は、鉄°゛板上に絶
縁層および銅層を積層した銅張鉄板の銅層に回路を形成
することによって得られる。固定側ヨーク１３は、第１
図に示した例と同様に屈曲部１３Ａを有し、軸受４を直
接保持している。屈曲部を設けるための曲げ加工に際し
、回路が傷つけられることはなく、ヨーク１３と軸受４
の組付けは、前に述べた方法と全く同様に行うことがで
きる。FIG. 3 shows another embodiment of the invention. In this embodiment, the fixed yoke 13 is a combination of the fixed yoke 11 and the circuit board 12 in the embodiment shown in FIG. Such a fixed side yoke 13 is obtained by forming a circuit on the copper layer of a copper-clad iron plate, which is obtained by laminating an insulating layer and a copper layer on an iron plate. The fixed side yoke 13 has a first
Like the example shown in the figure, it has a bent portion 13A and directly holds the bearing 4. During the bending process to provide the bent portion, the circuit is not damaged and the yoke 13 and bearing 4 are
The assembly can be carried out in exactly the same manner as previously described.
［発明の効果］
以上説明したように、本発明によれば、固定側ヨークが
直接軸受を保持するので、部品点数か少なく、組付けの
工程が簡略でき、しかも上下の軸受の同軸度も確保され
る。さらに軸受ハウシングを不要としたので、モータの
軽量化が可能である。[Effects of the Invention] As explained above, according to the present invention, since the fixed side yoke directly holds the bearing, the number of parts is reduced, the assembly process is simplified, and the coaxiality of the upper and lower bearings is ensured. be done. Furthermore, since a bearing housing is not required, the weight of the motor can be reduced.
第１図は本発明の実施例の断面図、
第２図は固定側ヨークの斜視図、
第３図は本発明の他の実施例の断面図、第４図は従来の
ブラシレスモータの断面図である。
１・・・固定側ヨーク、
２・・・駆動コイル、
３・・・軸受ハウジング、
４・・・軸受、
５・・・回転軸、
６・・・マグネット、
７・・・回転側ヨーク、
８・・・スリーブ、
１１・・・固定側ヨーク、
１１八・・・屈曲部、
１２・・・回路基板、
１３・・・固定側ヨーク、
１３＾・・・屈曲部。
第１図
１Ａ
第３図Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a perspective view of a stationary side yoke, Fig. 3 is a sectional view of another embodiment of the invention, and Fig. 4 is a sectional view of a conventional brushless motor. It is. DESCRIPTION OF SYMBOLS 1... Fixed side yoke, 2... Drive coil, 3... Bearing housing, 4... Bearing, 5... Rotating shaft, 6... Magnet, 7... Rotating side yoke, 8 ...Sleeve, 11...Fixed side yoke, 118...Bending portion, 12...Circuit board, 13...Fixed side yoke, 13^...Bending portion. Figure 1 1A Figure 3
Claims (1)
構造のブラシレスモータ。A brushless motor with a structure in which the stationary yoke directly holds the bearing that supports the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12115487A JPS63287354A (en) | 1987-05-20 | 1987-05-20 | Brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12115487A JPS63287354A (en) | 1987-05-20 | 1987-05-20 | Brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63287354A true JPS63287354A (en) | 1988-11-24 |
Family
ID=14804186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12115487A Pending JPS63287354A (en) | 1987-05-20 | 1987-05-20 | Brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63287354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0522919A (en) * | 1991-07-11 | 1993-01-29 | Sankyo Seiki Mfg Co Ltd | Motor |
-
1987
- 1987-05-20 JP JP12115487A patent/JPS63287354A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0522919A (en) * | 1991-07-11 | 1993-01-29 | Sankyo Seiki Mfg Co Ltd | Motor |
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