JPH069564Y2 - Bearing mechanism - Google Patents
Bearing mechanismInfo
- Publication number
- JPH069564Y2 JPH069564Y2 JP1987147440U JP14744087U JPH069564Y2 JP H069564 Y2 JPH069564 Y2 JP H069564Y2 JP 1987147440 U JP1987147440 U JP 1987147440U JP 14744087 U JP14744087 U JP 14744087U JP H069564 Y2 JPH069564 Y2 JP H069564Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- housing
- chassis
- slide
- rolling bearing
- 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.)
- Expired - Lifetime
Links
Landscapes
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は平面モーターの軸受に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a bearing for a planar motor.
従来、フロッピーディスクドライブ等に用いられる平面
モーターの軸受機構は、第２図に示すように、シャシ１
に設けられたハウジング10内にすべり軸受７ところがり
軸受８が組込まれ、そこにディスク形回転子２と回転軸
５が取付けられており、回転子２は吸着力Ｆを受けて常
に上方へ引張られているが、ころがり軸受８によって支
えられている。2. Description of the Related Art Conventionally, a bearing mechanism for a planar motor used in a floppy disk drive or the like has a chassis 1 as shown in FIG.
The slide bearing 7 and the slide bearing 8 are incorporated in the housing 10 provided in the above, and the disk-shaped rotor 2 and the rotary shaft 5 are attached thereto, and the rotor 2 receives the attractive force F and is always pulled upward. However, it is supported by the rolling bearing 8.
また他の例としては、第３図に示すように、すべり軸受
７ところがり軸受８の位置が上述の例と逆になっている
ものである。As another example, as shown in FIG. 3, the positions of the slide bearing 7 and the slide bearing 8 are opposite to those in the above example.
上述した従来の軸受機構では、機器のシャシを軸受のハ
ウジングに利用することにより、部品数の削減を図ると
ともに機器の薄型化の点で大きなメリットがあるが、第
２図に示すように、回転子２の軸方向の位置を決めるた
め、シャシ１のボス部にころがり軸受８の位置を出すた
めの段差を設けている。従って、シャシのボス部に軸受
のハウジング10を形成するとき、Ａ方向から、例えばＮ
Ｃフライス等で加工する場合、ハウジングの内径の小さ
い部分から段差を形成する内径の大きな部分に向けて加
工することになり、軸受寸法を精度良く加工する上で多
大の困難が生じると云う欠点がある。In the conventional bearing mechanism described above, by utilizing the chassis of the device for the housing of the bearing, there is a great merit in reducing the number of parts and making the device thinner, but as shown in FIG. In order to determine the position of the child 2 in the axial direction, the boss portion of the chassis 1 is provided with a step for positioning the rolling bearing 8. Therefore, when the housing 10 of the bearing is formed on the boss portion of the chassis, from the direction A, for example, N
In the case of machining with a C milling machine or the like, machining is performed from a portion having a small inner diameter of the housing toward a portion having a large inner diameter that forms a step, and there is a drawback that a great difficulty occurs in accurately machining the bearing dimensions. is there.
また上述の問題点を除くため、第３図に示すように、径
の大きなころがり軸受を上方に置く例もあるが、この場
合は吸着力Ｆを回転軸５で支えるため、ころがり軸受８
のシャシ１および回転軸５と接触する部分を接着等によ
り固定する必要があり、この固定の信頼性が劣るという
欠点がある。Further, in order to eliminate the above-mentioned problems, there is an example in which a rolling bearing having a large diameter is placed above as shown in FIG. 3, but in this case, since the attraction force F is supported by the rotating shaft 5, the rolling bearing 8
Since it is necessary to fix the portions of the chassis 1 and the rotating shaft 5 that are in contact with each other by adhesion or the like, there is a drawback that the reliability of this fixing is poor.
軸受ハウジング内に同軸に装着されたすべり軸受ところ
がり軸受とを有する軸受機構において、すべり軸受の一
端面にころがり軸受の一端面が当接されて固定されてい
る。In a bearing mechanism having a sliding bearing and a rolling bearing coaxially mounted in a bearing housing, one end face of the rolling bearing is fixed by abutting against one end face of the sliding bearing.
したがって、ハウジングの固定子側の内径が回転子側内
径より大きいため、ハウジングの加工を径の大きい側か
ら小さい方向に向って行うことが出来るので、精度の良
い軸受寸法を容易に得ることが出来る。また、すべり軸
受の位置が段差の位置により決められ、ころがり軸受の
位置もこの段差の位置と同一のすべり軸受の下面によっ
て決められるので、軸受の寸法を精度よく確保すること
が出来る。更に、回転子に加わる吸着力はころがり軸受
を介して、ハウジング内に圧入されているすべり軸受に
より支えられるので、軸受を接着剤等他の手段で固定す
る必要がない。Therefore, since the inner diameter of the housing on the side of the stator is larger than the inner diameter on the side of the rotor, the housing can be processed in the direction from the side with the larger diameter toward the smaller direction, so that accurate bearing dimensions can be easily obtained. . Further, since the position of the slide bearing is determined by the position of the step, and the position of the rolling bearing is also determined by the same lower surface of the slide bearing as the position of the step, the dimension of the bearing can be ensured with high accuracy. Further, since the suction force applied to the rotor is supported by the slide bearing press-fitted into the housing via the rolling bearing, it is not necessary to fix the bearing with an adhesive or other means.
次に、本考案の実施例について図面を参照して説明す
る。Next, an embodiment of the present invention will be described with reference to the drawings.
第１図は本考案の軸受機構の一実施例を示す断面図であ
る。FIG. 1 is a sectional view showing an embodiment of the bearing mechanism of the present invention.
シャシ１のボス部に設けられている軸受機構のハウジン
グ10は、すべり軸受７を収容する大径部と、ころがり軸
受８を受入れる小径部とからなり、両者の間に水平の段
差１ａが形成されている。すべり軸受７はその下面が段
差１ａに接するまでシャシ１内に圧入されて固定されて
いる。すべり軸受７の下面は、その内径を段差１ａの内
縁径より小さくしてあるので、段差１ａの内側にはみ出
す円環状の面を形成している。ころがり軸受８はその上
面がこの円環状の面に当たるまでハウジング内に挿入さ
れている。回転子２は固定ねじ６により回転軸５に固定
され、スペーサー９を介してころがり軸受８側から軸受
機構内に組込まれている。The housing 10 of the bearing mechanism provided on the boss portion of the chassis 1 is composed of a large diameter portion that accommodates the slide bearing 7 and a small diameter portion that receives the rolling bearing 8, and a horizontal step 1a is formed between the two. ing. The plain bearing 7 is press-fitted and fixed in the chassis 1 until its lower surface contacts the step 1a. Since the inner surface of the lower surface of the slide bearing 7 is smaller than the inner edge diameter of the step 1a, the lower surface of the slide bearing 7 has an annular surface protruding inside the step 1a. The rolling bearing 8 is inserted into the housing until its upper surface abuts this annular surface. The rotor 2 is fixed to the rotary shaft 5 with a fixing screw 6, and is incorporated into the bearing mechanism from the rolling bearing 8 side via a spacer 9.
このような構成により、軸受機構のハウジング10は上方
が大径、下方が小径となり、Ａ方向からのハウジングの
加工を容易にするとともに、すべり軸受７の上下位置が
段差１ａの高さに一致するため、ころがり軸受８の位置
決めが精度良く行われる。また、回転子２に加わる吸着
力Ｆは、スペーサー９、ころがり軸受８とを介して、シ
ャシ１に圧入されているすべり軸受７により支えられる
ため、接着材等による軸受の固定の必要はない。With this structure, the housing 10 of the bearing mechanism has a large diameter on the upper side and a small diameter on the lower side, which facilitates processing of the housing from the direction A and the vertical position of the slide bearing 7 matches the height of the step 1a. Therefore, the rolling bearing 8 is accurately positioned. Further, since the attraction force F applied to the rotor 2 is supported by the slide bearing 7 press-fitted into the chassis 1 via the spacer 9 and the rolling bearing 8, it is not necessary to fix the bearing with an adhesive or the like.
以上説明したように、シャシ内に設けられた軸受機構の
ハウジング内にすべり軸受を受ける段差を形成して、ハ
ウジングのすべり軸受側の内径を回転子側のころがり軸
受側の内径より大きくすることにより、ハウジングの加
工性を向上するとともに、段差によりすべり軸受の位置
が確定されるため、すべり軸受に接するころがり軸受の
位置が精度良く決定出来る効果がある。更にすべり軸受
をシャシに圧入して固定することにより、回転子に加わ
る吸着力をころがり軸受を介して支えることが出来る効
果がある。As explained above, by forming a step to receive the slide bearing in the housing of the bearing mechanism provided in the chassis and making the inside diameter of the slide bearing side of the housing larger than the inside diameter of the rolling bearing side of the rotor In addition to improving the workability of the housing, the position of the slide bearing is determined by the step, so that the position of the rolling bearing in contact with the slide bearing can be accurately determined. Further, by press-fitting and fixing the slide bearing into the chassis, there is an effect that the suction force applied to the rotor can be supported through the rolling bearing.
第１図は本考案の軸受機構の一実施例を示す断面図、第
２図および第３図は従来例における軸受機構を示す断面
図である。 １……シャシ 1a……段差 ２……回転子 ３……コイル ４……ＰＣＢ（固定子兼用） ５……回転軸 ６……固定ねじ ７……すべり軸受 ８……ころがり軸受 ９……スペーサー 10……ハウジング Ａ……加工の方向 Ｆ……吸着力FIG. 1 is a sectional view showing an embodiment of the bearing mechanism of the present invention, and FIGS. 2 and 3 are sectional views showing a conventional bearing mechanism. 1 ... Chassis 1a ... Step 2 ... Rotor 3 ... Coil 4 ... PCB (also used as a stator) 5 ... Rotating shaft 6 ... Fixing screw 7 ... Sliding bearing 8 ... Rolling bearing 9 ... Spacer 10 …… Housing A …… Processing direction F …… Suction force
Claims (1)
い、このハウジング内に同軸に装着されたすべり軸受と
ころがり軸受とを有するモータの軸受機構において、 前記ハウジングの上部をすべり軸受を収容する大径部と
するとともに下部をころがり軸受を収容する小径部と
し、これら大径部と小径部との間に形成される段差部に
前記大径部に圧入された前記すべり軸受の下面が当接し
ており、前記小径部に挿入された前記ころがり軸受の上
面が、前記すべり軸受の、前記段差部の半径方向内側の
下面に当接されていることを特徴とするモータの軸受機
構。1. A bearing mechanism of a motor having a housing of an electronic device as a housing of a bearing and having a sliding bearing and a sliding bearing coaxially mounted in the housing, wherein a large bearing for housing the sliding bearing is provided at an upper portion of the housing. The lower part of the slide bearing, which is press-fitted into the large-diameter part, contacts the stepped part formed between the large-diameter part and the small-diameter part. A bearing mechanism for a motor, wherein an upper surface of the rolling bearing inserted in the small diameter portion is in contact with a lower surface of the sliding bearing on a radially inner side of the stepped portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987147440U JPH069564Y2 (en) | 1987-09-29 | 1987-09-29 | Bearing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987147440U JPH069564Y2 (en) | 1987-09-29 | 1987-09-29 | Bearing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6454752U JPS6454752U (en) | 1989-04-04 |
| JPH069564Y2 true JPH069564Y2 (en) | 1994-03-09 |
Family
ID=31417841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987147440U Expired - Lifetime JPH069564Y2 (en) | 1987-09-29 | 1987-09-29 | Bearing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH069564Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0756592Y2 (en) * | 1990-03-09 | 1995-12-25 | 株式会社三協精機製作所 | Spindle motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59173454U (en) * | 1983-05-09 | 1984-11-20 | 日本電産コパル株式会社 | Motor bearing structure |
| JPH0135549Y2 (en) * | 1984-09-12 | 1989-10-30 |
-
1987
- 1987-09-29 JP JP1987147440U patent/JPH069564Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6454752U (en) | 1989-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH069564Y2 (en) | Bearing mechanism | |
| JP2638941B2 (en) | motor | |
| JP2535715Y2 (en) | Spindle motor | |
| JP3132142B2 (en) | Method of assembling magnetic disk drive | |
| JP2651925B2 (en) | Disk drive motor incorporated from one side of the disk drive | |
| JPH0130875Y2 (en) | ||
| JPH0747982Y2 (en) | In-hub type brushless spindle motor | |
| JP2530596Y2 (en) | Spindle bearings for disk devices | |
| JPH07153041A (en) | Head drum device | |
| JPH0237171Y2 (en) | ||
| KR200154182Y1 (en) | Small motor of rotor shaft fixing structure | |
| JPH054132Y2 (en) | ||
| JPH0619308Y2 (en) | Pulse motor | |
| JPH0229823Y2 (en) | ||
| JPS5810222Y2 (en) | record player | |
| JPH02304773A (en) | Spindle grounding structure and spindle production for disk device | |
| JP2000230547A (en) | Pivot bearing device | |
| JP2541809Y2 (en) | Tape drive | |
| JP2530575Y2 (en) | Floppy disk drive motor | |
| JPS639783Y2 (en) | ||
| JPH073264U (en) | Motor ball bearing preload structure | |
| JPH0254017B2 (en) | ||
| JPH0530544U (en) | Bearing device | |
| JPH0567184U (en) | Brushless motor | |
| JPH04114771U (en) | step motor |