JPH02154311A - Drum unit - Google Patents
Drum unitInfo
- Publication number
- JPH02154311A JPH02154311A JP63309213A JP30921388A JPH02154311A JP H02154311 A JPH02154311 A JP H02154311A JP 63309213 A JP63309213 A JP 63309213A JP 30921388 A JP30921388 A JP 30921388A JP H02154311 A JPH02154311 A JP H02154311A
- Authority
- JP
- Japan
- Prior art keywords
- bonding agent
- adhesive
- gap
- lower drum
- leaking
- 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
Links
- 239000000853 adhesive Substances 0.000 claims description 37
- 230000001070 adhesive effect Effects 0.000 claims description 37
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000007767 bonding agent Substances 0.000 abstract 10
- 230000002265 prevention Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
- G11B5/53—Disposition or mounting of heads on rotating support
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野J
この発明は、磁気テープ記録再生装置に用いるドラムユ
ニットに関し、詳しくは、軸付軸受と、丁ドラムとを接
着する際、接着剤がもれ出すことの少ない軸受構造に関
する。[Detailed Description of the Invention] [Industrial Application Field J] The present invention relates to a drum unit used in a magnetic tape recording/reproducing device. Regarding the bearing structure, which rarely happens.
〔従来の技術1
第6図は例えば実開昭62−45712号公報に示され
た従来のトラムユニットの縦断面図であり1図において
、(1) はトドラム、(2] はJ、ドラム(1)を
同定するフランジ、(3)はフランジ(2)ト端に取り
付けられた回転側ロータリートランス、(4)は1ドラ
ム(1)に取り付けられたべ・ソト、(51は回転体で
あるシャフト、(6)は1−ド51ム(1)をシャフト
(5)を介して蒙動するモータ。[Prior art 1] Fig. 6 is a vertical cross-sectional view of a conventional tram unit shown in, for example, Japanese Utility Model Application Publication No. 62-45712. 1) is a flange that identifies the flange, (3) is a rotating side rotary transformer attached to the end of the flange (2), (4) is a rotary transformer that is attached to one drum (1), and (51 is a shaft that is a rotating body) , (6) is a motor that moves the first door 51 (1) via the shaft (5).
(7)は干−タ(6)のロータ部をシャフト(5)に同
定する同定ホルダ、(8)は図示していない基台に同定
される士トラム、(9)はトドラム(8) に接着同定
された同定側ロータリートランス、(10,1)110
bl はボールで、シャフト(5)の外周面に設けた内
側レース而(l Ial 、 (llbJ と外輪f1
2a) 、 f12b)に設けた外側レース而(13a
l 、 (13bl に当接する。(7) is an identification holder that identifies the rotor part of the dryer (6) to the shaft (5), (8) is the identification holder that is identified to the base (not shown), and (9) is the identification holder that identifies the rotor part of the dryer (6) to the shaft (5). Identification side rotary transformer identified as adhesive, (10,1)110
bl is a ball, and the inner race (l Ial , (llbJ ) and outer ring f1 provided on the outer peripheral surface of the shaft (5)
2a), f12b)
l, (contacts 13bl.
これらのシャフト(5)、ボール(lOa) 、 (1
0b) 、外輪(12al 、 (12b) 、コイル
バネ(16)は一体のものとして軸付軸受(40)と称
される。 +141は外輪(12alを焼嵌め同定する
トドラム(8)の圧入面、(15)は磁気テープ(図示
せず)を走行案内する下ドラム(8)の外周面に設けた
リード部、 (+61はコイルバネで、一対の外輪(1
2a) 、 (12blに−r圧を与え。These shafts (5), balls (lOa), (1
0b), the outer ring (12al, (12b), and the coil spring (16) are integrally referred to as a shaft bearing (40). 15) is a lead part provided on the outer peripheral surface of the lower drum (8) that guides the magnetic tape (not shown); (+61 is a coil spring;
2a), (Apply -r pressure to 12bl.
ボールflOa) 、 (10bl と外輪(12al
、 (12b) と、シャツt(5)間のガタを除去
する。Ball flOa), (10bl and outer ring (12al
, (12b) and the looseness between the shirt t(5) is removed.
外輪(12al 、 f12b) と、下ドラム(8)
との同定のノj法には、第6図に示した焼面め住人以外
に、接?′1による方法が通常採用されている。この例
を第7図および第8図で説明する。Outer ring (12al, f12b) and lower drum (8)
In addition to the burnt-faced residents shown in Figure 6, there is no contact method for identification. The method according to '1 is usually adopted. This example will be explained with reference to FIGS. 7 and 8.
第7図はこの一例の軸受部の拡大断面図である。図にお
いて、(20)はトドラム(8)に設けた接青削γL人
穴、(21)は注入された接着剤である。この例では、
下ドラム(8)と外輪(12a)、 l!2b)とは、
ゆるいしまりばめか、ずきまばめの嵌合条件で軸付軸受
(40)がトドラム(8)の所定の位置まで挿入され、
接着剤注入穴(20)から接着剤(21)を注入して固
着する。FIG. 7 is an enlarged sectional view of the bearing portion of this example. In the figure, (20) is the grooved γL hole provided in the todrum (8), and (21) is the injected adhesive. In this example,
Lower drum (8) and outer ring (12a), l! 2b) is
The shaft bearing (40) is inserted into the todrum (8) to a predetermined position with a loose interference fit or tight fitting condition,
Adhesive (21) is injected through the adhesive injection hole (20) and fixed.
第8図は、他の従来例の縦断面図である。FIG. 8 is a longitudinal sectional view of another conventional example.
図において、(22)は外輪(12a)の外周面に形成
されている接着剤溜り川の溝である。In the figure, (22) is an adhesive reservoir groove formed on the outer peripheral surface of the outer ring (12a).
この例も、第7図の従来例と同じ手順でトドラム(8)
と、外輪(12al とが接着されるが、溝(22)内
に接着剤(21)が溜るので、接着の信頼性の向にが図
れる。This example also uses the same procedure as the conventional example shown in Figure 7.
and the outer ring (12al) are bonded, but since the adhesive (21) accumulates in the groove (22), the reliability of bonding can be improved.
[発明が解決しようとする課題〕
従東のドラムユニットは以1゛、のように構成されてい
るので、抽入する接着剤の:1」、1−14人圧及び接
着イ1業時のドラム(8)の姿勢等によってはトドラム
(8)と外輪(12a)の隙間から接着剤が漏れ出して
軸受の回転性能に悪影響を与えることがあり、接層作業
条件の微妙なコントロールが必要であるなどの問題点が
あった。[Problem to be solved by the invention] The drum unit of Juto is constructed as follows. Depending on the posture of (8), etc., adhesive may leak from the gap between the tod drum (8) and the outer ring (12a), adversely affecting the rotational performance of the bearing, so delicate control of the contact work conditions is required. There were problems such as.
この発明は1ユ記のような問題点を解消する為になされ
たもので、接着剤の漏れ出しを防1ヒし、接着作業が容
易にできるドラムユニットの軸受構造を得ることを目的
とする。This invention has been made to solve the problems mentioned in item 1, and aims to provide a bearing structure for a drum unit that prevents adhesive from leaking out and facilitates bonding work.
この発明に係るドラムユニットは、 トドラムと、軸付
軸受の外輪の間に、接着剤が漏れ出るのをKl tトす
る少なくとも1条の漏れ出し防+1用の溝を設けた点を
特徴とする。The drum unit according to the present invention is characterized in that at least one leakage prevention +1 groove is provided between the drum and the outer ring of the shaft bearing to prevent adhesive from leaking out.
〔作用J
この発明におけるドラムユニットは、接着剤が下ドラム
と外輪との隙間を通って漏れ出しても、漏れ出し防止用
の溝でくいとめられ、隙間から外に流れ出ることが阻+
hされる。[Function J] In the drum unit of the present invention, even if adhesive leaks through the gap between the lower drum and the outer ring, it is blocked by the leakage prevention groove and is prevented from flowing out through the gap.
h is done.
〔発明の実施例]
以ド、この発明の一実施例を図について説明する。第1
図はこの実施例の軸受部の一部拡大断面図で、第8図と
同一部分にはそれぞれ同一符号を付して説明を省略する
。図において、(24al 。[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1st
The figure is a partially enlarged sectional view of the bearing section of this embodiment, and the same parts as in FIG. 8 are given the same reference numerals, and the explanation will be omitted. In the figure, (24al.
(24b)は接着剤溜り用の溝(22)の両側に設けた
漏れ出し防止用の溝である。第2図はこの実施例の軸付
軸受(40)の一部拡大斜視図、第3図はこの実施例の
接着剤注入作業時の作用を説明するための一部拡大断面
図である。(24b) are grooves for preventing leakage provided on both sides of the adhesive reservoir groove (22). FIG. 2 is a partially enlarged perspective view of the shaft bearing (40) of this embodiment, and FIG. 3 is a partially enlarged sectional view for explaining the operation of this embodiment during adhesive injection work.
図において(23)は溝(24al 、 (z4b)に
よって形成されている空間、 T25>は接着剤溜り用
の溝(22)によって形成されている空間、(26)は
外輪(12al と下ドラム(8)の間に生じている微
小な隙間、−点鎖線で示した矢印は、接着剤注入治具(
28)によって注入された接着剤(2りの流れる方向を
示している。In the figure, (23) is the space formed by the grooves (24al, (z4b)), T25> is the space formed by the groove (22) for the adhesive reservoir, and (26) is the space formed by the outer ring (12al) and the lower drum ( The minute gap created between 8), indicated by the dotted chain arrow, is indicated by the adhesive injection jig (
28) injected adhesive (two flow directions shown).
つぎに、接着剤注入時の作用を説明する。接着剤注入治
具(28)によって、接着剤i↑大穴(20)から注入
された接着剤(21)は、空間(25)を充填したのち
、接着剤の量、注入圧力、及び接着作業時下ドラム(8
)の姿勢(第3図で下方向が重力方向とすると、゛ド方
向(30)の方に接着剤(21)が流れやすい)等によ
って微小な隙間(26)を通って流れ出る。この流れ出
た接着剤は、溝(24al 、 (24b)によって形
成される空間(23)でくいとめられるので。Next, the action when injecting the adhesive will be explained. The adhesive (21) injected from the adhesive i↑ large hole (20) by the adhesive injection jig (28) fills the space (25), and then adjusts the amount of adhesive, injection pressure, and adhesive operation time. Lower drum (8
) (if the downward direction is the gravity direction in FIG. 3, the adhesive (21) will flow more easily in the vertical direction (30)), etc., and the adhesive (21) will flow out through the minute gap (26). This flowing adhesive is stopped in the space (23) formed by the grooves (24al, (24b)).
隙間(26)の外に漏れ出ることがl([止される。Leakage outside the gap (26) is prevented.
なお、上記実施例では、接着剤溜り用の溝(22)を挟
む形で2条の溝(24a) 、 (24b)を設けたが
、第4図に示すように接着剤の漏れ出易い方向だけに1
条設けてもよい。In the above embodiment, two grooves (24a) and (24b) were provided sandwiching the groove (22) for the adhesive reservoir, but as shown in FIG. Only 1
Articles may be provided.
また、上記実施例では、接着剤溜り用の溝(22)を設
けた例で説明したが、溝(22)を廃し、漏れ防止用の
溝(24a) 、 124b)だけを設けてもよい。Further, in the above embodiment, an example was explained in which a groove (22) for an adhesive reservoir was provided, but the groove (22) may be omitted and only the grooves (24a, 124b) for preventing leakage may be provided.
また、上記実施例では、軸付軸受(40)の外輪(12
alの外周上に凹み溝(22) 、 (24a) 、
(24b)を設けたが、第5図に示すようにトドラム(
8)に漏れ防止用の溝(24cl を設けてもよい。Further, in the above embodiment, the outer ring (12) of the shaft bearing (40)
Concave grooves (22), (24a), on the outer periphery of al.
(24b), but as shown in FIG.
8) may be provided with a groove (24 cl) to prevent leakage.
以上のように2この発明によれば接着剤注入穴から離れ
た位置に、少なくとも1条の漏れ出し防Il用の講を設
けたので、接着作業時の接着剤の111、汀人圧等の微
妙なコントロール及び、接着作業時におけるドラムの姿
勢などの制約が緩和でき、接着剤の漏れ出しによる不只
合の発生階1Fならびに作業効率が向トするという効果
が得られる。As described above, according to the present invention, at least one leakage prevention groove is provided at a position away from the adhesive injection hole, so that the adhesive pressure 111 and the pressure caused by the pressure of the adhesive during bonding work can be reduced. Delicate control and constraints on the posture of the drum during bonding work can be relaxed, and the effect of reducing the occurrence of problems on the floor 1F due to adhesive leakage and work efficiency can be obtained.
第1図はこの発明の一実施例の軸受部の一部拡人断面図
、第2図はこの実施例の軸付軸受の一部拡大斜視図、第
3図はこの実施例の接着作茨時の作用を説明するための
一部拡人断面図、第4図はこの発明の他の実施例の一部
拡大断面図、第5図はこの発明の異なる他の実施例の一
部拡大断面図、第6図は従来のドラムユニットの縦断面
図、第7図は接着によって軸付軸受と下ドラムとを接着
する従宋例の一部拡大断面図2第8図は第7図とは異な
る他の実施例の一部拡大断面図である。。
(8)・・・トドラム、(12a)・・・外輪、(20
)・・・接着剤ンi大穴、 (22) −rM (接着
剤溜り用) 、 (24alf24b)、 (24c)
−溝(漏れ出し防止用) 、 (aol−・・[11
+付11ib受1゜
なお、各図中、同一符号は同一 または相゛11部分を
示す。FIG. 1 is a partially enlarged cross-sectional view of a bearing portion of an embodiment of the present invention, FIG. 2 is a partially enlarged perspective view of a shaft bearing of this embodiment, and FIG. FIG. 4 is a partially enlarged cross-sectional view of another embodiment of the present invention, and FIG. 5 is a partially enlarged cross-sectional view of another embodiment of the present invention. Fig. 6 is a vertical cross-sectional view of a conventional drum unit, Fig. 7 is a partially enlarged cross-sectional view of a Congo Song example in which the shaft bearing and the lower drum are bonded together by adhesive. 2 Fig. 8 is different from Fig. 7. FIG. 7 is a partially enlarged sectional view of another embodiment. . (8)...Todrum, (12a)...Outer ring, (20
)...Adhesive i large hole, (22) -rM (for adhesive reservoir), (24alf24b), (24c)
-Groove (for leakage prevention), (aol-... [11
+11ib receiver 1゜In each figure, the same reference numerals indicate the same or opposite parts.
Claims (1)
はすきまばめの嵌め合い条件で嵌入された軸付軸受の外
輪との隙間に、上記下ドラムの嵌め合い部分に形成され
た接着剤注入穴から接着剤が注入されて接着同定される
ドラムユニットであつて、上記隙間の上記接着剤注入穴
から離れた位置に接着剤漏れ出し防止用の溝が形成され
てなるドラムユニット。(1) Adhesive is injected into the gap between the lower drum and the outer ring of the shaft bearing that is fitted into the lower drum with a loose interference fit or a loose fit. The drum unit is a drum unit in which adhesive is injected through a hole to determine adhesion, the drum unit having a groove for preventing adhesive leakage formed in the gap at a position away from the adhesive injection hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63309213A JP2661996B2 (en) | 1988-12-06 | 1988-12-06 | Drum unit and bearing with shaft for magnetic tape recording / reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63309213A JP2661996B2 (en) | 1988-12-06 | 1988-12-06 | Drum unit and bearing with shaft for magnetic tape recording / reproducing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02154311A true JPH02154311A (en) | 1990-06-13 |
JP2661996B2 JP2661996B2 (en) | 1997-10-08 |
Family
ID=17990290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63309213A Expired - Fee Related JP2661996B2 (en) | 1988-12-06 | 1988-12-06 | Drum unit and bearing with shaft for magnetic tape recording / reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2661996B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59110426U (en) * | 1983-01-18 | 1984-07-25 | 三洋電機株式会社 | guide cylinder |
JPS6129131U (en) * | 1984-07-26 | 1986-02-21 | 富士ゼロックス株式会社 | Deep groove ball bearing |
-
1988
- 1988-12-06 JP JP63309213A patent/JP2661996B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59110426U (en) * | 1983-01-18 | 1984-07-25 | 三洋電機株式会社 | guide cylinder |
JPS6129131U (en) * | 1984-07-26 | 1986-02-21 | 富士ゼロックス株式会社 | Deep groove ball bearing |
Also Published As
Publication number | Publication date |
---|---|
JP2661996B2 (en) | 1997-10-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |