JPS6118254Y2 - - Google Patents
Info
- Publication number
- JPS6118254Y2 JPS6118254Y2 JP1979177151U JP17715179U JPS6118254Y2 JP S6118254 Y2 JPS6118254 Y2 JP S6118254Y2 JP 1979177151 U JP1979177151 U JP 1979177151U JP 17715179 U JP17715179 U JP 17715179U JP S6118254 Y2 JPS6118254 Y2 JP S6118254Y2
- Authority
- JP
- Japan
- Prior art keywords
- idler
- hole
- shaft
- cylindrical part
- shaft body
- 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
Links
- 238000009434 installation Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Rolls And Other Rotary Bodies (AREA)
Description
【考案の詳細な説明】
本考案は、テープレコーダのアイドラや回転ギ
ヤの如く所定の駆動力を被駆動体に伝達する回転
体の取付装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for a rotating body, such as an idler or rotating gear of a tape recorder, which transmits a predetermined driving force to a driven body.
従来、テープレコーダのアイドラの如き回転体
は、例えば第1図に示すような構造で取付けられ
ている。 Conventionally, a rotating body such as an idler of a tape recorder has been mounted in a structure as shown in FIG. 1, for example.
すなわち、シヤーシ1に軸体2を植立し、この
軸体2の先端外周に止め具であるEリング3が嵌
合する環状凹溝4を設ける。そして、合成樹脂製
のリング体5の外周にゴム体6を嵌装するととも
に軸心に貫通孔7を設けたアイドラ8は、上記貫
通孔7を介して上記軸体2に挿入さて、且つ上記
環状凹溝4にEリング3を嵌合することによつて
軸体2に回転自在に取付けられている。 That is, a shaft body 2 is installed on a chassis 1, and an annular groove 4 into which an E-ring 3, which is a stopper, is fitted is provided on the outer periphery of the tip end of the shaft body 2. An idler 8, which has a rubber body 6 fitted around the outer periphery of a ring body 5 made of synthetic resin and has a through hole 7 at its axis, is inserted into the shaft body 2 through the through hole 7, and By fitting the E-ring 3 into the annular groove 4, it is rotatably attached to the shaft body 2.
上述したように従来のものにあつては、アイド
ラの固定にEリング等の止め具を必要とするた
め、取付け作業が極めて非能率的である。特に、
Eリングの如き止め具は、開口部側の遊端を治具
等で押し広げ操作しながら軸体へ嵌合していかな
ければならず、嵌合作業が難しばかりか人手を必
要とし、自動機による自動化の達成が困難となつ
ている。 As mentioned above, in the case of the conventional type, a stopper such as an E-ring is required to fix the idler, so the installation work is extremely inefficient. especially,
For fasteners such as E-rings, the free end on the opening side must be pushed out with a jig or the like to fit onto the shaft, which is not only difficult but requires manual labor, and automatic It is becoming difficult to achieve automation using machines.
そこで、本考案は、テープレコーダのアイドラ
や回転ギヤの如き回転体を、上述したようなEリ
ング等の止め具を用いることなく軸体への取付け
を行い得るようになし、取付け作業の能率化を図
るとともに自動化の達成を行い得るようにした取
付装置を提供しようとするものである。 Therefore, the present invention makes it possible to attach a rotating body such as a tape recorder idler or rotating gear to a shaft body without using a stopper such as an E-ring as described above, thereby streamlining the installation work. It is an object of the present invention to provide a mounting device that can achieve automation as well as achieve automation.
以下、本考案の具体的な実施例を図面を参照し
て説明する。なお、この実施例は、テープレコー
ダのアイドラに適用した例を挙げて説明する。 Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. This embodiment will be explained using an example in which it is applied to an idler of a tape recorder.
この考案に係る取付け装置に於いては、第2図
及び第3図に示すようにテープレコーダの機構部
が組付けられるシヤーシ11に穿設した軸取付あ
な12に、軸本体13より細径に形成した一端ぶ
14を挿入した後カシメ付けにより取付けられた
軸体15を有している。この軸体15の先端側の
外周には、軸本体13を細径にするようにして形
成された環状凹部16が設けられている。 In the mounting device according to this invention, as shown in FIGS. 2 and 3, a shaft mounting hole 12 bored in the chassis 11 into which the mechanical part of the tape recorder is assembled is provided with a shaft mounting hole 12 having a diameter smaller than that of the shaft body 13. It has a shaft body 15 which is attached by caulking after inserting the formed one end flap 14. An annular recess 16 is provided on the outer periphery of the tip end side of the shaft body 15, which is formed so as to reduce the diameter of the shaft body 13.
そして、上記軸体15に回転自在に取付けられ
るアイドラ17は、第2図及び第3図に示すよう
に可撓性を有する合成樹脂等で形成されたアイド
ラ本体18と、このアイドラ本体18の外周に嵌
装された弾性変形し得るようなゴム体19とから
構成されている。このアイドラ17のアイドラ本
体18の軸心部分には前記軸体15に挿入される
貫通孔20が設けられるとともに、この貫通孔2
0と同心円状に遊余間隙21が設けられている。
そして、上述貫通孔20と遊余間隙21とによつ
て囲まれた部分をもつて筒状部22を構成してい
る。なお、上述遊余間隙21は、アイドラ本体1
8を穿設する如くして断面凹状となるように形成
されている。 As shown in FIGS. 2 and 3, the idler 17 rotatably attached to the shaft body 15 includes an idler body 18 made of flexible synthetic resin, and an outer periphery of the idler body 18. It is composed of a rubber body 19 which is elastically deformable and fitted into the body. A through hole 20 to be inserted into the shaft body 15 is provided in the axial center portion of the idler body 18 of the idler 17.
An extra gap 21 is provided concentrically with 0.
A portion surrounded by the through hole 20 and the free gap 21 constitutes a cylindrical portion 22. Note that the above-mentioned free gap 21 is the idler body 1.
8 is formed so as to have a concave cross section.
上述のように、アイドラ本体18に遊余間隙2
1を設けることによつて上記アイドラ本体18に
一体に形成された上記筒状部22の端面には、先
端を上記貫通孔20に突出して臨ませるようにし
て軸体15の環状係合凹部16に係合する略L字
状をなす係合突起25が一体に突出形成されてい
る。この係合突起25を設けた両側には、上記筒
状部22の端面より上記貫通孔20と平行に一対
のスリツト23,23が切込み形成され、上記筒
状部22の端面は小円弧状部22aと大円弧状部
22bとに分割されている。すなわち、係合突起
25を有する小円弧状部22aは、筒状部22の
端面円周の1/2より小さく形成される。そして、
上記係合突起25は、アイドラ本体18の外周側
部分26から遊余間隙21を介して分離された筒
状部22の一部である小円弧状部22aの端面に
突設されてなるので、アイドラ本体18の外周、
ひいてはアイドラ本体18の外周に嵌装されるゴ
ム体19に影響を与えることなく弾性変形し得る
ものとなる。 As mentioned above, the idler body 18 has an idle clearance 2.
1, the end surface of the cylindrical portion 22 integrally formed with the idler body 18 is provided with an annular engagement recess 16 of the shaft body 15 such that its tip protrudes and faces the through hole 20. A substantially L-shaped engagement protrusion 25 that engages with is integrally formed to protrude. A pair of slits 23, 23 are cut in parallel to the through hole 20 from the end surface of the cylindrical portion 22 on both sides where the engaging protrusion 25 is provided, and the end surface of the cylindrical portion 22 has a small arc-shaped portion. 22a and a large arcuate portion 22b. That is, the small arcuate portion 22a having the engagement protrusion 25 is formed to be smaller than 1/2 of the circumference of the end face of the cylindrical portion 22. and,
The engagement protrusion 25 is provided so as to protrude from the end face of a small arcuate portion 22a that is a part of the cylindrical portion 22 separated from the outer circumferential portion 26 of the idler body 18 via the free gap 21. The outer periphery of the idler body 18,
As a result, the rubber body 19 fitted around the outer periphery of the idler body 18 can be elastically deformed without affecting it.
上述のように構成されたアイドラ17は、貫通
孔20を介して前記軸体15に挿入されていくと
き、第4図に示すように係合突起25が軸体15
の頭部15aに当接し、遊余間隙21が弾性変形
される。さらにアイドラ17を軸体15へ挿入す
ると、遊余間隙21側に弾性変形していた係合突
起25が弾性復帰して上記軸体15の環状係合凹
部16に係合し、上記アイドラ17は第4図及び
第5図に示すように軸体15に回転自在に取付け
られる。 When the idler 17 configured as described above is inserted into the shaft body 15 through the through hole 20, the engaging protrusion 25 engages with the shaft body 15 as shown in FIG.
The free gap 21 is elastically deformed. When the idler 17 is further inserted into the shaft body 15, the engagement protrusion 25, which had been elastically deformed toward the free gap 21 side, elastically returns to engage with the annular engagement recess 16 of the shaft body 15, and the idler 17 As shown in FIGS. 4 and 5, it is rotatably attached to the shaft body 15.
このように取付けられたアイドラ17は、遊余
間隙21によつて外周側部分26から分離された
筒状部22に設けた係合突起25を軸体15の環
状係合凹部16に係合して取付けられるので、上
記係合突起25が環状係合凹部16の外周面に強
く接して弾性変形しても上記遊余間隙21によつ
て上記変形が吸収されアイドラ17外周のゴム体
19に何等の影響をも与えることがないので、こ
のアイドラ17で駆動される被駆動体に対して回
転ラム等を生じさせることがない。 The idler 17 installed in this manner engages the engagement protrusion 25 provided on the cylindrical portion 22 separated from the outer peripheral portion 26 by the free gap 21 with the annular engagement recess 16 of the shaft body 15. Therefore, even if the engagement protrusion 25 strongly contacts the outer circumferential surface of the annular engagement recess 16 and is elastically deformed, the deformation is absorbed by the free gap 21 and no damage is caused to the rubber body 19 on the outer periphery of the idler 17. Therefore, the driven body driven by the idler 17 is not affected by a rotating ram or the like.
上述したような本考案装置によれば、軸体への
挿入操作のみによつてアイドラ等の回転体を取付
けることができ、取付け作業の能率化を図ること
ができるばかりか自動機による自動組付けも可能
となる。 According to the device of the present invention as described above, a rotating body such as an idler can be installed only by inserting it into the shaft body, which not only improves the efficiency of the installation work but also allows automatic assembly by an automatic machine. is also possible.
また、本考案装置は、弾性変形し得る係合突起
の環状係合凹部けの係合のみによつてアイドラ等
の回転体の軸体に対する取付けを行うことができ
るので、スリツトにドライバ等の治具を差し込ん
で上記係合突起を外方へ撓わませ環状係合突起を
外方へ撓ませ上記環状係合凹部との係合を解除す
れば容易に取り外すことができる。 In addition, the device of the present invention can be attached to the shaft of a rotating body such as an idler only by engaging the annular engagement recess of the elastically deformable engagement protrusion. It can be easily removed by inserting a tool and deflecting the engagement protrusion outward to deflect the annular engagement protrusion outward and release the engagement with the annular engagement recess.
さらに、本考案装置は、アイドラ等の回転体に
設けた係合突起を切欠いても、この係合突起とと
もに小円弧状部が切欠かれ又は変形するだけで、
円筒部の半周部分以上、すなわち大円弧状部は切
欠かれることなく又変形することなくそのまま残
る。そのため、この半周部分以上に亘る残余部分
である大円弧状部を利用してEリング等の止め具
を用いて再びアイドラ等を軸体に取付けることが
できる。 Furthermore, in the device of the present invention, even if the engaging protrusion provided on a rotating body such as an idler is notched, the small arc-shaped portion is notched or deformed together with the engaging protrusion.
More than half the circumference of the cylindrical portion, ie, the large arc-shaped portion, remains as it is without being cut or deformed. Therefore, the idler etc. can be reattached to the shaft body using a fastener such as an E-ring by utilizing the large arc-shaped portion that is the remaining portion extending over half the circumference or more.
さらにまた、本考案装置によれば、アイドラ等
の回転体に設けた遊余間隙の作用によつて軸体と
の当接部に生ずる変形等が外周にまで影響しない
ので、回転ラム等を生じさせない信頼性の高い回
転体の取付装置を提供することができる。 Furthermore, according to the device of the present invention, deformation that occurs at the contact portion with the shaft body due to the action of the free gap provided in the rotating body such as the idler does not affect the outer periphery, so that the rotating ram etc. Therefore, it is possible to provide a highly reliable mounting device for a rotating body that does not cause damage.
なお、上述実施例では、テープレコーダのアイ
ドラに適用した例を挙げて説明したが、その他回
転ギヤの如く所定の駆動力を被駆動体に伝達する
回転体にも広く適用することができる。 In the above-mentioned embodiment, an example in which the present invention is applied to an idler of a tape recorder has been described, but the present invention can also be widely applied to other rotating bodies such as rotating gears that transmit a predetermined driving force to a driven body.
第1図は従来例を示す斜視図である。第2図は
本考案の一実施例を示す分解斜視図であり、第3
図はその断面図であり、第4図は取付け状態を示
す斜視図であり、第5図はその断面図である。
11……シヤーシ、15……軸体、16……環
状係合凹部、17……アイドラ、20……アイド
ラの貫通孔、21……遊余間隙、23,24……
スリツト、25……係合突起。
FIG. 1 is a perspective view showing a conventional example. FIG. 2 is an exploded perspective view showing one embodiment of the present invention;
The figure is a sectional view thereof, FIG. 4 is a perspective view showing the attached state, and FIG. 5 is a sectional view thereof. DESCRIPTION OF SYMBOLS 11... Chassis, 15... Shaft body, 16... Annular engagement recess, 17... Idler, 20... Through hole of idler, 21... Free gap, 23, 24...
Slit, 25...engaging protrusion.
Claims (1)
成した軸体と、この軸体に挿通される貫通孔が形
成された可撓性を有する回転体とからなり、この
回転体に上記貫通孔と同心円状に遊余間隙を設け
筒状部を形成するとともに、この筒状部の端面に
先端が上記貫通孔側に突出して上記環状係合凹部
に係合する係合突起を一体的に設けるとともに、
上記筒状部の端面の係合突起を有する側における
円弧部の長さが上記端面円周の1/2より小さくな
るように上記係合突起の両側に上記筒状部の端面
より上記貫通孔と平行の一対のスリツトを設けて
なる回転体の取付装置。 It consists of a shaft that is fixed to the chassis and has an annular engagement recess formed on its outer periphery, and a flexible rotating body that has a through hole that is inserted through the shaft. A cylindrical part is formed with a concentric free gap, and an engaging protrusion whose tip protrudes toward the through hole and engages with the annular engaging recess is integrally provided on the end surface of the cylindrical part. ,
The through hole is formed on both sides of the engaging protrusion from the end face of the cylindrical part so that the length of the circular arc portion on the side having the engaging protrusion on the end face of the cylindrical part is less than 1/2 of the circumference of the end face. A mounting device for a rotating body that has a pair of slits parallel to the slits.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1979177151U JPS6118254Y2 (en) | 1979-12-22 | 1979-12-22 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1979177151U JPS6118254Y2 (en) | 1979-12-22 | 1979-12-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5580526U JPS5580526U (en) | 1980-06-03 |
JPS6118254Y2 true JPS6118254Y2 (en) | 1986-06-03 |
Family
ID=29186377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1979177151U Expired JPS6118254Y2 (en) | 1979-12-22 | 1979-12-22 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6118254Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07101048B2 (en) * | 1986-10-29 | 1995-11-01 | 日立電子エンジニアリング株式会社 | Rotational force transmission roller |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4735146U (en) * | 1971-05-08 | 1972-12-19 | ||
JPS5332284U (en) * | 1976-08-27 | 1978-03-20 |
-
1979
- 1979-12-22 JP JP1979177151U patent/JPS6118254Y2/ja not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4735146U (en) * | 1971-05-08 | 1972-12-19 | ||
JPS5332284U (en) * | 1976-08-27 | 1978-03-20 |
Also Published As
Publication number | Publication date |
---|---|
JPS5580526U (en) | 1980-06-03 |
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