JP2000018262A - Mechanism for preventing scattering and diffusion of leaked oil in bearing - Google Patents

Mechanism for preventing scattering and diffusion of leaked oil in bearing

Info

Publication number
JP2000018262A
JP2000018262A JP10180053A JP18005398A JP2000018262A JP 2000018262 A JP2000018262 A JP 2000018262A JP 10180053 A JP10180053 A JP 10180053A JP 18005398 A JP18005398 A JP 18005398A JP 2000018262 A JP2000018262 A JP 2000018262A
Authority
JP
Japan
Prior art keywords
cylindrical body
bearing
shaft
oil
guide roller
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
Application number
JP10180053A
Other languages
Japanese (ja)
Inventor
Takuji Nakamura
卓児 中村
Osamu Iida
修 飯田
Fumio Sekiguchi
文生 関口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP10180053A priority Critical patent/JP2000018262A/en
Publication of JP2000018262A publication Critical patent/JP2000018262A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To prevent the scattering and diffusion of the leaked oil by fitting a bearing inner ring on a shaft, fitting a cylindrical body to an outer ring, coaxially mounting a leaked oil receiving plate on a lower part of the bearing, and forming a peripheral wall part covering the periphery of a lower end part of the cylindrical body, on the receiving plate. SOLUTION: A shaft 101 is inserted into a guide roller 11 of a cylindrical body, the inner rings 12a, 13a of the bearings 12, 13 are fitted on the shaft 101, an inner peripheral surface of the guide roller 11 is fitted in the outer rings 12b, 13b, and a lower flange 14 of a receiving plate is fitted in the shaft 101. The lower flange 14 comprises an insertion hole 14a on its center, and a groove 14b having an approximately square cross section on its periphery, and the physical relationship of a peripheral wall part 14b1 of the groove b and the guide roller 11 has the overlap Ox in the horizontal direction and the overlap Oy in the vertical direction. The guide roller 11 is rotated to the shaft 101 through the bearings 12, 13. When the leaked oil exists, the overlaps Ox, Oy prevent the leaked oil, from flowing to the external from the groove 14b through a route of an arrow B. Accordingly the scattering and diffusion of the leaked oil can be prevented.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ベアリング軸受に
おける漏れオイルの飛散・拡散防止機構に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for preventing leakage oil from scattering and diffusing in a bearing.

【0002】[0002]

【従来の技術】図3は、従来のビデオテープレコーダに
使用しているテープ走行機構100の要部断面図であ
る。図3に示すように、ボールベアリング(以下、ベア
リングと記す)102の内輪102aに軸101が嵌入
され、外輪102bにSUS製の円筒体状のガイドロー
ラ103が嵌入されている。ガイドローラ103の内周
面下端部にはベアリング102から漏れたオイルを受け
止めるためのオイルフェンス状のオイル受け部材104
が接着剤により接着・取付されている。ガイドローラ1
03の外周面を、図示しない駆動系により走行駆動され
る磁気テープ105が軸101の中心軸に対して垂直方
向に走行していく。
2. Description of the Related Art FIG. 3 is a sectional view of a main part of a tape running mechanism 100 used in a conventional video tape recorder. As shown in FIG. 3, a shaft 101 is fitted into an inner ring 102a of a ball bearing (hereinafter, referred to as a bearing) 102, and a SUS cylindrical guide roller 103 is fitted into an outer ring 102b. An oil fence-shaped oil receiving member 104 for receiving oil leaked from the bearing 102 is provided at a lower end portion of the inner peripheral surface of the guide roller 103.
Are bonded and attached by an adhesive. Guide roller 1
A magnetic tape 105 running and driven by a drive system (not shown) runs on the outer peripheral surface of the shaft 103 in a direction perpendicular to the central axis of the shaft 101.

【0003】かかる構成のテープ走行機構100におい
ては、遠心力と重力が作用するのでベアリング102か
らのオイル漏れは原理的に避けることが不可能である。
このオイル漏れへの対処手段の一つが前述のオイル受け
部材104であり、遠心力・重力により飛散・拡散した
漏れオイルがガイドローラ103の下端に到達しないよ
うにしていた。ガイドローラ103の下端に漏れオイル
が到達すると、テープの貼り付き,テープ走行エラー等
を起こすからである。
In the tape running mechanism 100 having such a configuration, oil leakage from the bearing 102 cannot be avoided in principle because centrifugal force and gravity act.
One of the means for coping with this oil leak is the above-described oil receiving member 104, which prevents the leaked oil scattered and diffused by centrifugal force and gravity from reaching the lower end of the guide roller 103. This is because when the leaked oil reaches the lower end of the guide roller 103, tape sticking, tape running error, and the like occur.

【0004】[0004]

【発明が解決しょうとする課題】しかしながら、従来の
オイル受け部材では、接着が不十分な場合には漏れオイ
ルの飛散・拡散が生じることがあった。この接着不十分
を回避するためにはオイル受け部材をガイドローラ内周
面に密着しなければならず、この内周面への接着作業が
難しく、生産性が向上せず、作業費のコストアップとな
っていた。また、漏れオイルの飛散・拡散の他の防止手
段として、SUS製のガイドローラの内面に対して切削
加工を行い、オイル受け部を削り出す手段もあるが、こ
の場合は加工代のために部品コストが高くなっていた。
However, in the conventional oil receiving member, if the adhesion is insufficient, the leaked oil may be scattered or diffused. In order to avoid this insufficient bonding, the oil receiving member must be in close contact with the inner peripheral surface of the guide roller, which makes it difficult to adhere to the inner peripheral surface. Had become. As another means for preventing the scattering and diffusion of leaked oil, there is also a means for cutting the inner surface of the SUS guide roller to cut out the oil receiving portion. Cost was high.

【0005】そこで本発明の課題は、ベアリング軸受か
ら漏れたオイルの飛散・拡散を防止し、部品コストおよ
び作業コストを削減したベアリング軸受における漏れオ
イルの飛散・拡散防止機構を提供することである。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a mechanism for preventing scattering and diffusion of oil leaked from a bearing in a bearing, which prevents the scattering and diffusion of oil leaking from the bearing and reduces the cost of parts and work.

【0006】[0006]

【課題を解決するための手段】前記課題を解決するため
に本発明は、軸にベアリングの内輪を嵌入し、外輪に円
筒体を嵌入して該円筒体を前記軸に対して回転可能にし
たベアリング軸受において、前記軸における前記ベアリ
ングの下方に該ベアリングから漏れるオイルを受ける受
け皿を同軸に配置し、該受け皿は、前記円筒体の下端部
周囲を覆う周壁部を備えたことを特徴とする。
According to the present invention, an inner ring of a bearing is fitted to a shaft, and a cylindrical body is fitted to an outer ring so that the cylindrical body is rotatable with respect to the shaft. In the bearing, a receiving tray for receiving oil leaking from the bearing is coaxially arranged below the bearing on the shaft, and the receiving tray includes a peripheral wall portion that covers a periphery of a lower end portion of the cylindrical body.

【0007】このようにすれば、受け皿の周壁部が円筒
体の下端部周囲を覆っているので、漏れオイルが円筒体
の下端部に到達しても、該漏れオイルは周壁部によって
遮られ、該周壁部から外部に漏れだすことはない。
With this configuration, since the peripheral wall of the tray covers the lower end of the cylindrical body, even if leaked oil reaches the lower end of the cylindrical body, the leaked oil is blocked by the peripheral wall, There is no leakage from the peripheral wall to the outside.

【0008】[0008]

【発明の実施の形態】以下、本発明を図示の実施の形態
に基づいて説明する。なお、既に説明した部分には同一
符号を付し、重複記載を省略する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. Note that the same reference numerals are given to the already described portions, and redundant description is omitted.

【0009】(1)実施の形態 図1(A)は本実施の形態の断面図、図1(B)は図
(A)における符号Aで示す箇所の要部拡大図である。
図1(A),(B)に示すように、「円筒体」であるガ
イドローラ11の中央部内面側に突起11aを形成し、
下端部外周面を切り込んで段差部11bを形成する。該
段差部11bは水平部11b1 と垂直部11b2 を有す
る。そして、軸101をガイドローラ11に挿通した状
態で軸の上下にベアリング12と13の各内輪12a,
13aを嵌入し、各外輪12b,13bにガイドローラ
11の内周面を嵌入する。この際、各外輪12b,13
bの側面が突起11aの側面にそれぞれ当接するように
嵌入する。
(1) Embodiment FIG. 1A is a cross-sectional view of the present embodiment, and FIG. 1B is an enlarged view of a main part of a portion indicated by reference numeral A in FIG.
As shown in FIGS. 1A and 1B, a projection 11a is formed on the inner surface of the central portion of the guide roller 11, which is a “cylindrical body”.
A step 11b is formed by cutting the outer peripheral surface of the lower end. The step portion 11b has a horizontal portion 11b1 and a vertical portion 11b2. Then, with the shaft 101 inserted through the guide roller 11, the inner rings 12a,
13a, and the inner peripheral surface of the guide roller 11 is fitted into each of the outer rings 12b, 13b. At this time, the outer rings 12b, 13
The protrusions 11a are fitted so that the side surfaces thereof contact the side surfaces of the protrusions 11a.

【0010】次いで、「受け皿」である下フランジ14
を軸101に嵌入する。この下フランジ14は平面形状
は円形であって、中央に嵌入穴14aを有し、該嵌入穴
14aの周囲に断面形状略正方形の溝14bを有する。
溝14bの周壁部14b1 とガイドローラ11の外周面
11cとの位置関係は、水平方向にオーバーラップOx
を有し、溝14bの底面14b2 とガイドローラ11の
下端面11dとの位置関係は、垂直方向のオーバーラッ
プOy を有する。次に、以上のように構成したテープ走
行機構10の動作を説明する。テープ105の走行によ
りガイドローラ11がベアリング12,13を介して軸
101に対して回転する。このとき、ベアリング12,
13の各内輪12a,13aおよび下フランジ14は軸
101に対して回転しない。
Next, the lower flange 14 which is a "pan"
Into the shaft 101. The lower flange 14 is circular in plan view, has a fitting hole 14a in the center, and has a groove 14b having a substantially square cross-sectional shape around the fitting hole 14a.
The positional relationship between the peripheral wall portion 14b1 of the groove 14b and the outer peripheral surface 11c of the guide roller 11 is such that the horizontal overlap Ox
And the positional relationship between the bottom surface 14b2 of the groove 14b and the lower end surface 11d of the guide roller 11 has a vertical overlap Oy. Next, the operation of the tape running mechanism 10 configured as described above will be described. As the tape 105 runs, the guide roller 11 rotates with respect to the shaft 101 via the bearings 12 and 13. At this time, the bearing 12,
The inner rings 12 a and 13 a and the lower flange 14 of the thirteen do not rotate with respect to the shaft 101.

【0011】そして、漏れオイルがあった場合は、図1
(B)に示すように、水平方向および垂直方向のオーバ
ーラップOx ,Oy が形成されているので、漏れオイル
は矢印Bで示すルートを通って溝14bから外部に出て
いくことがない。従って、漏れオイルの飛散・拡散を防
止することができ、漏れオイルがテープ105に悪影響
を及ぼすことがない。特にオーバーラップOy はガイド
ローラ表面におけるオイル拡散防止対策として有効であ
り、また、オーバーラップOx により溝14bにテープ
が潜り込むのを防止しているので、テープが損傷を受け
ることがない。
If there is oil leakage, FIG.
Since the horizontal and vertical overlaps Ox and Oy are formed as shown in FIG. 3B, the leaked oil does not go out of the groove 14b through the route shown by the arrow B. Therefore, scattering and diffusion of the leaking oil can be prevented, and the leaking oil does not adversely affect the tape 105. In particular, the overlap Oy is effective as a measure for preventing oil diffusion on the guide roller surface, and the tape is not damaged because the overlap Ox prevents the tape from entering the groove 14b.

【0012】(2)変形例 図2に種々の変形例を示す。図2(A)は、フランジ1
4にオイル抜き用の穴14cを形成した場合である。こ
のようにすれば、溝14bに漏れオイルが溜まることが
なく、漏れオイルの飛散・拡散の効果をより高めること
ができる。図2(B)は、ガイドローラ11下端の垂直
部に凹凸11fを形成し、漏れオイルの飛散・拡散の効
果をより高めた場合である。図2(C)は、ガイドロー
ラ11の下端部に内側に向けて鍔11eを形成し、漏れ
オイルの遠心力による飛散を防止した場合である。
(2) Modifications FIG. 2 shows various modifications. FIG. 2A shows the flange 1.
4 shows a case in which an oil drain hole 14c is formed. In this way, the leakage oil does not accumulate in the groove 14b, and the effect of scattering and diffusion of the leakage oil can be further enhanced. FIG. 2B shows a case where unevenness 11f is formed in the vertical portion at the lower end of the guide roller 11 to further enhance the effect of scattering and diffusing the leaked oil. FIG. 2C shows a case where a flange 11e is formed inward at the lower end of the guide roller 11 to prevent the leakage oil from scattering due to centrifugal force.

【0013】[0013]

【発明の効果】以上説明したように本発明によれば、受
け皿に形成された周壁部で円筒体(ガイドローラ)の下
端部周囲を覆うようにしたので、ベアリング軸受におけ
る漏れオイルの飛散・拡散を防止することができる。
As described above, according to the present invention, since the peripheral wall formed on the tray covers the lower end of the cylindrical body (guide roller), the scattering and diffusion of leaked oil in the bearings is achieved. Can be prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施の形態を示す図であって、(A)
は側断面図、(B)は要部を拡大した側断面図である。
FIG. 1 is a diagram showing an embodiment of the present invention, in which (A)
Is a side sectional view, and (B) is a side sectional view in which main parts are enlarged.

【図2】本発明の実施の形態の各種変形例を示す側断面
図である。
FIG. 2 is a side sectional view showing various modifications of the embodiment of the present invention.

【図3】従来例の側断面図である。FIG. 3 is a side sectional view of a conventional example.

【符号の説明】[Explanation of symbols]

10 テープ走行機構 11 ガイドローラ(円筒体) 11a 突起 11b 段差部 11b1 水平部 11b2 垂直部 11c 外周面 11d 下端面 11f 凹凸 12,13 ボールベアリング 14 下フランジ(受け皿) 14b 溝 14b1 周壁部 14b2 底面 14c オイル抜き用の穴 Reference Signs List 10 Tape running mechanism 11 Guide roller (cylindrical body) 11a Projection 11b Step 11b1 Horizontal part 11b2 Vertical part 11c Outer peripheral surface 11d Lower end surface 11f Irregularity 12,13 Ball bearing 14 Lower flange (dish) 14b Groove 14b1 Peripheral wall 14b2 Bottom 14c Oil Hole for punching

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 軸にベアリングの内輪を嵌入し、外輪に
円筒体を嵌入して該円筒体を前記軸に対して回転可能に
支持したベアリング軸受において、 前記軸における前記ベアリングの下方に該ベアリングか
ら漏れるオイルを受ける受け皿を同軸に配置し、 該受け皿は、前記円筒体の下端部周囲を覆う周壁部を備
えたことを特徴とするベアリング軸受における漏れオイ
ルの飛散・拡散防止機構。
1. A bearing bearing in which an inner ring of a bearing is fitted to a shaft, and a cylindrical body is fitted to an outer ring, and the cylindrical body is supported rotatably with respect to the shaft. A tray for receiving oil leaking from the cylinder, coaxially disposed, and the tray has a peripheral wall portion that covers a periphery of a lower end portion of the cylindrical body.
【請求項2】 前記円筒体の下端部周囲に外周側を切り
込んで段差部を形成し、前記周壁部内面を該段差部を形
成しない円筒体外周面より内側に配置したことを特徴と
する請求項1記載のベアリング軸受における漏れオイル
の飛散・拡散防止機構。
2. A stepped portion is formed by cutting an outer peripheral side around a lower end portion of the cylindrical body, and an inner surface of the peripheral wall portion is arranged inside an outer peripheral surface of the cylindrical body not forming the stepped portion. Item 2. A mechanism for preventing scattering and diffusion of leaked oil in the bearing of Item 1.
【請求項3】 前記受け皿の底面に穴を形成したことを
特徴とする請求項1に記載のベアリング軸受における漏
れオイルの飛散・拡散防止機構。
3. The mechanism according to claim 1, wherein a hole is formed in a bottom surface of the receiving tray.
【請求項4】 前記円筒体の下端部外周面に凹凸を形成
したことを特徴とする請求項1に記載のベアリング軸受
における漏れオイルの飛散・拡散防止機構。
4. The mechanism according to claim 1, wherein irregularities are formed on the outer peripheral surface of a lower end portion of said cylindrical body.
【請求項5】 前記円筒体の下端部内周面に内側に向け
て鍔を形成したことを特徴とする請求項1に記載のベア
リング軸受における漏れオイルの飛散・拡散防止機構。
5. A mechanism for preventing scattering and diffusion of leaking oil in a bearing according to claim 1, wherein a flange is formed inwardly on an inner peripheral surface of a lower end portion of the cylindrical body.
JP10180053A 1998-06-26 1998-06-26 Mechanism for preventing scattering and diffusion of leaked oil in bearing Pending JP2000018262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10180053A JP2000018262A (en) 1998-06-26 1998-06-26 Mechanism for preventing scattering and diffusion of leaked oil in bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10180053A JP2000018262A (en) 1998-06-26 1998-06-26 Mechanism for preventing scattering and diffusion of leaked oil in bearing

Publications (1)

Publication Number Publication Date
JP2000018262A true JP2000018262A (en) 2000-01-18

Family

ID=16076675

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10180053A Pending JP2000018262A (en) 1998-06-26 1998-06-26 Mechanism for preventing scattering and diffusion of leaked oil in bearing

Country Status (1)

Country Link
JP (1) JP2000018262A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7102857B2 (en) 2003-05-16 2006-09-05 Mitsumi Electric Co., Ltd. Rotary head drum apparatus capable of positively receiving a splashing adhesive
CN102091668A (en) * 2010-11-09 2011-06-15 山西广发禽业有限公司 Dust preventing device for pulverizer
JP2016061830A (en) * 2014-09-16 2016-04-25 日本電産コパル株式会社 Focal plane shutter for camera, and digital camera comprising the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7102857B2 (en) 2003-05-16 2006-09-05 Mitsumi Electric Co., Ltd. Rotary head drum apparatus capable of positively receiving a splashing adhesive
CN102091668A (en) * 2010-11-09 2011-06-15 山西广发禽业有限公司 Dust preventing device for pulverizer
JP2016061830A (en) * 2014-09-16 2016-04-25 日本電産コパル株式会社 Focal plane shutter for camera, and digital camera comprising the same

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