JPH0356925Y2 - - Google Patents
Info
- Publication number
- JPH0356925Y2 JPH0356925Y2 JP1985012573U JP1257385U JPH0356925Y2 JP H0356925 Y2 JPH0356925 Y2 JP H0356925Y2 JP 1985012573 U JP1985012573 U JP 1985012573U JP 1257385 U JP1257385 U JP 1257385U JP H0356925 Y2 JPH0356925 Y2 JP H0356925Y2
- Authority
- JP
- Japan
- Prior art keywords
- pivot shaft
- case
- side wall
- main body
- body case
- 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
- 230000000694 effects Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、本体ケースの前面に前蓋を有する
テープカートリツジにおいて、この前蓋を閉じ勝
手に回動付勢するばね部材の反力により生じる蓋
側壁変形の防止対策を講じたものである。[Detailed description of the invention] [Industrial field of application] This invention is a tape cartridge that has a front lid on the front of the main body case, and uses the reaction force of a spring member to bias the front lid to rotate when closed. Measures have been taken to prevent the lid side wall from deforming.
第6図は本考案が対象とするテープカートリツ
ジ代表例であるビデオ用のものを示す。かかるテ
ープカートリツジにおいて、従来では第7図およ
び第8図に示すようにプラスチツク製の上下ケー
ス1a,1bを突き合わせて接合してなる本体ケ
ース1の左右の側壁8に枢支孔9を設け、本体ケ
ース1の前面を開閉自在に閉合するプラスチツク
製の前蓋2の左右側壁2aの各内面からは枢支軸
3を突設し、該枢支軸3を前記枢支孔9に回動自
在に嵌入枢支する。本体ケース1の左右の少なく
とも一方の側壁8よりケース内方に臨む枢支軸2
の先端部と本体ケース1の内面とにわたつて掛け
られたばね部材4で前蓋2を常に閉じ方向に回動
付勢し、前蓋2でテープ5の前面外側をカバーし
て保護する。そして、このテープカートリツジを
デツキに装填すると、前蓋2がばね部材4に抗し
て第7図中の仮想線で示すように上開き回動し、
ケース前面からテープ5を前方に引き出させるよ
うになつている。
FIG. 6 shows a tape cartridge for video use, which is a typical example of the tape cartridge to which the present invention is directed. In such a tape cartridge, conventionally, as shown in FIGS. 7 and 8, pivot holes 9 are provided in the left and right side walls 8 of the main body case 1, which is formed by butting and joining the upper and lower plastic cases 1a and 1b. A pivot shaft 3 is provided protruding from each inner surface of the left and right side walls 2a of the front cover 2 made of plastic, which opens and closes the front surface of the main body case 1, and the pivot shaft 3 can be freely rotated into the pivot hole 9. It is inlaid and pivotally supported. A pivot shaft 2 facing inward from at least one of the left and right side walls 8 of the main body case 1
The front cover 2 is always biased to rotate in the closing direction by a spring member 4 hung over the tip of the tape 5 and the inner surface of the main body case 1, and the front cover 2 covers and protects the front outside of the tape 5. When this tape cartridge is loaded onto a deck, the front lid 2 rotates upward against the spring member 4 as shown by the imaginary line in FIG.
The tape 5 is drawn out forward from the front of the case.
この種のばね部材4は捩りコイルばねからな
り、コイル部4aと、コイル部4aの一端に設け
られたフツク部4bと、コイル部4aの他端にフ
ツク4bと直角を成すよう曲げられた腕部4cと
を有する。そして、ばね部材4は第7図および第
8図に示すようにコイル部4aを本体ケース1の
側壁8より内方に臨む枢支軸3上の先端寄りに緩
く嵌装し、フツク部4bを枢支軸3上のコイル部
4aよりケース外側方向寄りに突設したばね掛け
リブ6に引つ掛け、他端の腕部4cを本体ケース
1の内面に設けたばね掛け溝7に入り込ませて装
着している。 This type of spring member 4 is composed of a torsion coil spring, and includes a coil portion 4a, a hook portion 4b provided at one end of the coil portion 4a, and an arm bent at a right angle to the hook 4b at the other end of the coil portion 4a. It has a portion 4c. As shown in FIGS. 7 and 8, the spring member 4 has a coil portion 4a loosely fitted near the tip of the pivot shaft 3 facing inward from the side wall 8 of the main body case 1, and a hook portion 4b. The coil part 4a on the pivot shaft 3 is hooked onto a spring hanging rib 6 protruding toward the outside of the case, and the arm part 4c at the other end is inserted into the spring hanging groove 7 provided on the inner surface of the main case 1 to attach it. are doing.
しかし、かかる構造では前蓋2を上開き回動し
て行つたとき、第8図および第9図(第8図にお
けるB矢視図)に示すようにばね部材4がコイル
部4aの軸線まわりに捩りモーメントを受け、コ
イル部4aが収縮しながら枢支軸3との隙間分だ
けC1,C2方向に傾き、この形でばね作用をする
ため、腕部4cがばね掛け溝7内でケース内部方
向Dに寄せ付けられて突つ張り作用をし、この反
力がフツク部4bからばね掛けリブ6に伝わる。
この結果、枢支軸3がケース外側方向Eへ押し出
される形となり、前蓋2の側壁2aが第10図に
示すようにケース外側方向へ反り変形してしまう
欠点があつた。当然のことながら、この前蓋側壁
2aの変形量Gはばね力が強い程大きくなる。
However, in this structure, when the front cover 2 is rotated to open upward, the spring member 4 is rotated around the axis of the coil portion 4a as shown in FIGS. 8 and 9 (view from arrow B in FIG. 8). When a torsional moment is applied to the coil part 4a, the coil part 4a contracts and tilts in the C 1 and C 2 directions by the gap between it and the pivot shaft 3. In this way, the arm part 4c acts as a spring, so that the arm part 4c is held in the spring groove 7. It is pulled toward the inside direction D of the case and exerts a tensioning action, and this reaction force is transmitted from the hook portion 4b to the spring hanging rib 6.
As a result, the pivot shaft 3 is pushed out toward the outer side of the case E, resulting in a drawback that the side wall 2a of the front lid 2 is warped and deformed toward the outer side of the case as shown in FIG. Naturally, the amount of deformation G of the front lid side wall 2a increases as the spring force increases.
そのように、前蓋2を上開き回動して行くに従
つて側壁2aが本体ケース1外に突出するよう変
形し、この突出量Hが大きいときには、ビデオデ
ツキに装填した状態において該側壁2aがデツキ
側の部材に接当干渉してテープカートリツジを抜
き出せなくなるトラブルが生じる危険性がある。
継続使用しているうちに、前蓋側壁2aがケース
外に常に突出変形した状態になりがちである。と
くに、前蓋2が上開き状態で高温下に置かれたと
き(例えば、ビデオデツキ内に長時間置かれたと
き)には、この変形が塑性変形となつて前蓋2の
閉じ後にも残りがちであつた。更には前蓋側壁2
aの変形に伴い、前蓋2の開閉回動がスムーズに
行われなくなつたり、該側壁2aと本体ケース1
との間に組み込まれる図外のロツク部材(不使用
時における前蓋の回動を阻止する部材)があると
きは、これにも悪影響を及ぼし、そのロツク機能
が損なわれるという問題があつた。 As the front cover 2 is rotated upwardly, the side wall 2a deforms to protrude outside the main case 1, and when the amount of protrusion H is large, the side wall 2a deforms when the front cover 2 is opened and rotated. There is a risk that the tape cartridge may come into contact with a member on the deck side and interfere with it, making it impossible to remove the tape cartridge.
During continued use, the front lid side wall 2a tends to be constantly deformed and protruding outside the case. Particularly, when the front cover 2 is placed under high temperature with the top open (for example, when placed in a video deck for a long time), this deformation becomes plastic deformation and tends to remain even after the front cover 2 is closed. It was hot. Furthermore, the front lid side wall 2
Due to the deformation of the front cover 2, the opening and closing rotation of the front cover 2 may not be performed smoothly, and the side wall 2a and the main body case 1 may
When there is a locking member (not shown) installed between the front cover and the front cover (a member that prevents the front cover from rotating when not in use), there is a problem that this also has an adverse effect and the locking function is impaired.
この考案はかかる事実に着目して、前述の枢支
軸3の形状に改良を加えることにより、前蓋2の
側壁2aがケース外方向に突出変形するのを有効
確実に防止することを目的とする。 The purpose of this invention is to effectively and reliably prevent the side wall 2a of the front cover 2 from protruding outward from the case by improving the shape of the pivot shaft 3 mentioned above. do.
上記の目的を達成するために、本考案では、第
1図に例示するように本体ケース1の前面を閉合
する前蓋2がこれの左右の少なくとも一方の蓋側
壁2aの内面側にその開閉支点となる枢支軸3を
突設し、蓋側壁2aの内側に近接対向する本体ケ
ース1の側壁8に前記枢支軸3が回動自在に嵌入
枢支される枢支孔9を設け、枢支軸3の枢支孔9
よりケース内方に臨む先端寄り側の端部と本体ケ
ース1の内面とにわたつて前蓋2を常に閉じ方向
に回動付勢するばね部材4を掛けてある形態のテ
ープカートリツジを前提とする。そのうえで、枢
支軸3上の前記側壁8とばね部材4間の軸周面上
に枢支孔9よりも径大の鍔10を設けたものであ
る。
In order to achieve the above object, in the present invention, as illustrated in FIG. A pivot shaft 3 is provided in a protruding manner, and a pivot hole 9 into which the pivot shaft 3 is rotatably fitted and supported is provided in the side wall 8 of the main body case 1 which is closely opposed to the inside of the lid side wall 2a. Pivot hole 9 of support shaft 3
The present invention assumes that a tape cartridge is provided with a spring member 4 that constantly biases the front cover 2 in the closing direction between the end closer to the tip facing inward of the case and the inner surface of the main case 1. do. In addition, a collar 10 having a larger diameter than the pivot hole 9 is provided on the circumferential surface of the pivot shaft 3 between the side wall 8 and the spring member 4.
しかるときは、枢支軸3がばね部材4の反力に
よりケース外側方向に押し出される力を受ける
と、鍔10が本体ケース1の側壁8の内面に接当
するため、枢支軸3のケース外方向への移動を阻
止することになる。
In such a case, when the pivot shaft 3 receives a force that pushes the case outward due to the reaction force of the spring member 4, the collar 10 comes into contact with the inner surface of the side wall 8 of the main case 1, so that the case of the pivot shaft 3 This will prevent outward movement.
以上のようにした本考案によれば、前蓋2を開
き回動するときもばね部材4で前蓋2の側壁2a
がケース外方向へ突出変形することがなくなる。
したがつて、デツキへの脱着操作に支障を来すこ
とがなく、前蓋2の円滑な開閉回動を確保し、前
蓋2を閉じ姿勢に回動ロツクする手段などにも悪
影響を及ぼすことがなくなる。
According to the present invention as described above, even when the front cover 2 is opened and rotated, the spring member 4 is applied to the side wall 2a of the front cover 2.
will no longer protrude and deform toward the outside of the case.
Therefore, it does not interfere with the operation of attaching and detaching the front cover to the deck, ensures smooth opening and closing rotation of the front cover 2, and does not adversely affect the means for locking the front cover 2 in the closed position. disappears.
〔実施例 1〕
第1図および第2図は本考案の第1実施例を示
しており、この場合のばね部材4は従来通り、コ
イル部4aと、コイル部4aの一端のフツク部4
b、および他端の腕部4cを有し、コイル部4a
を枢支軸3に遊嵌し、フツク部4bを枢支軸3上
のばね掛けリブ6に引つ掛けるとともに、腕部4
cを本体ケース1側の内面に凹設したばね掛け溝
7に入り込ませる形で装着している。そして、本
体ケース1の側壁8とばね部材4との間の枢支軸
3の周面上に枢支孔9の径よりも径大の円形状の
鍔10を一体に張り出し成形している。因に、鍔
10を有する枢支軸3を枢支孔9に嵌入するに際
しては、第2図に示すように上ケース1aの側壁
8に設けた切欠部9aと、これに突き合わされる
下ケース1bの側壁8に設けた切欠部9bとを合
わすことによつて枢支孔9を構成し、上下ケース
1a,1bを突き合わせる前に枢支軸3を上ケー
ス1a側の切欠部9aに嵌入し、この後上下ケー
ス1a,1bを突き合わせて接合する組み込み方
法を採ればよい。[Embodiment 1] FIGS. 1 and 2 show a first embodiment of the present invention, and the spring member 4 in this case has a coil portion 4a and a hook portion 4 at one end of the coil portion 4a, as in the conventional case.
b, and an arm portion 4c at the other end, and has a coil portion 4a.
is loosely fitted onto the pivot shaft 3, the hook portion 4b is hooked onto the spring hooking rib 6 on the pivot shaft 3, and the arm portion 4 is
c is inserted into a spring hook groove 7 recessed in the inner surface of the main body case 1 side. A circular collar 10 having a diameter larger than the diameter of the pivot hole 9 is integrally formed over the circumferential surface of the pivot shaft 3 between the side wall 8 of the main body case 1 and the spring member 4. Incidentally, when fitting the pivot shaft 3 having the flange 10 into the pivot hole 9, as shown in FIG. The pivot hole 9 is formed by matching the notch 9b provided in the side wall 8 of the upper case 1b, and the pivot shaft 3 is inserted into the notch 9a on the upper case 1a side before the upper and lower cases 1a and 1b are brought together. However, after this, an assembly method may be adopted in which the upper and lower cases 1a and 1b are butted and joined.
しかるときは、前蓋2の上開き回動時にばね部
材4がコイル部4aの軸線まわりに捩りモーメン
トを受け、コイル部4aが枢支軸3との隙間分だ
け収縮して傾きを生じ、その腕部4cがばね掛け
溝7のケース内部方向Dに寄せつけられてこのば
ね部材4の反力により枢支軸3がケース外側方向
へ押し出される力を受けるが、このとき鍔10が
本体ケース1の剛性を有する側壁8の内面に接当
してその押し出し力に十分に対抗することにな
る。 In such a case, when the front cover 2 is rotated to open upward, the spring member 4 receives a torsional moment around the axis of the coil portion 4a, and the coil portion 4a contracts by the gap with the pivot shaft 3, causing an inclination. The arm portion 4c is brought closer to the inside direction D of the case in the spring hook 7, and the pivot shaft 3 receives a force that pushes the pivot shaft 3 toward the outside of the case due to the reaction force of the spring member 4. It comes into contact with the inner surface of the rigid side wall 8 and sufficiently resists the extrusion force.
〔実施例 2〕
第3図は本考案の第2実施例を示しており、こ
れでは本体ケース1の側壁8の枢支孔9のケース
内部側の開口端にテーパ面11を設け、枢支軸3
の鍔10のケース外側の端面にも同じくテーパ面
12を設けて鍔10と側壁8のテーパ面12,1
1どうしで接当するようにして同様の効果を得よ
うとしたものである。[Embodiment 2] Fig. 3 shows a second embodiment of the present invention, in which a tapered surface 11 is provided at the open end of the pivot hole 9 in the side wall 8 of the main body case 1 on the inside of the case, and the pivot Axis 3
A tapered surface 12 is also provided on the outer end surface of the case of the collar 10, and the tapered surfaces 12, 1 of the collar 10 and the side wall 8 are
An attempt was made to achieve a similar effect by having the two parts touch each other.
〔実施例 3〕
第4図は本考案の第3実施例を示しており、こ
れでは枢支軸3の回動に伴う鍔10の側壁8との
摩擦接触面積を小さくしてその回動を円滑になら
しめるために、鍔10側のみにテーパ面13を設
けたものである。[Embodiment 3] Fig. 4 shows a third embodiment of the present invention, in which the frictional contact area of the collar 10 with the side wall 8 due to the rotation of the pivot shaft 3 is reduced to reduce the rotation. In order to level it out smoothly, a tapered surface 13 is provided only on the collar 10 side.
〔実施例 4〕
第5図は本考案の第4実施例を示しており、こ
れでは鍔10を枢支軸3の周面上の円周方向に分
断状に設けたものである。この例においても枢支
軸3の回動に伴う鍔10の側壁8との摩擦接触を
可及的に小さくすることができる。[Embodiment 4] FIG. 5 shows a fourth embodiment of the present invention, in which the flange 10 is provided in a segmented manner in the circumferential direction on the circumferential surface of the pivot shaft 3. Also in this example, the frictional contact between the collar 10 and the side wall 8 due to the rotation of the pivot shaft 3 can be minimized as much as possible.
図示する実施例の全容は以上の通りであるが、
本考案はこれに限られない。例えば、ばね部材4
および鍔10は前蓋2の左右の枢支軸3,3の片
方のみならず、その両方に設けてもよい。また、
鍔10は枢支軸3とは別体に構成し、これを枢支
軸3の先端より軸方向に挿入して固定するもので
あつてもよい。さらに、第6図に示す形態のテー
プカートリツジに限られず、本体ケース1の前面
に前蓋2を有する各種テープカートリツジに広く
適用できることは言うまでもない。 The entire details of the illustrated embodiment are as described above.
The present invention is not limited to this. For example, the spring member 4
The collar 10 may be provided not only on one side of the left and right pivot shafts 3, 3 of the front lid 2, but also on both of them. Also,
The collar 10 may be constructed separately from the pivot shaft 3, and may be inserted into the pivot shaft 3 from the tip thereof in the axial direction and fixed therein. Furthermore, it goes without saying that the present invention is not limited to the tape cartridge of the form shown in FIG. 6, but can be widely applied to various tape cartridges having a front cover 2 on the front surface of the main body case 1.
第1図および第2図は本考案の第1実施例を示
しており、第1図は要部の底面側から見た平面
図、第2図は要部の縦断側面図である。第3図は
本考案の第2実施例を示す要部の底面側から見た
平面図である。第4図は本考案の第3実施例を示
す要部の底面側から見た平面図である。第5図は
本考案の第4実施例を示す枢支軸の断面図であ
る。第6図は本考案が対象とするテープカートリ
ツジを例示する斜視図である。第7図ないし第1
0図は従来例を示しており、第7図は第6図にお
けるA−A線断面図、第8図は要部の底面側から
見た平面図、第9図は第8図におけるB矢視図、
第10図は前蓋の側壁の不具合な変形状態を説明
する平面図である。
1……本体ケース、2……前蓋、2a……蓋側
壁、3……枢支軸、4……ばね部材、4a……ば
ね部材のコイル部、4b……ばね部材のフツク
部、4c……ばね部材の腕部、6……ばね掛けリ
ブ、7……ばね掛け溝、8……本体ケースの側
壁、9……枢支孔。
1 and 2 show a first embodiment of the present invention, with FIG. 1 being a plan view of the main part as seen from the bottom side, and FIG. 2 being a longitudinal sectional side view of the main part. FIG. 3 is a plan view of the main parts of the second embodiment of the present invention, viewed from the bottom side. FIG. 4 is a plan view of the main parts of the third embodiment of the present invention, viewed from the bottom side. FIG. 5 is a sectional view of a pivot shaft showing a fourth embodiment of the present invention. FIG. 6 is a perspective view illustrating a tape cartridge to which the present invention is directed. Figures 7 to 1
Fig. 0 shows a conventional example, Fig. 7 is a sectional view taken along the line A-A in Fig. 6, Fig. 8 is a plan view of the main part seen from the bottom side, and Fig. 9 is a cross-sectional view taken along the arrow B in Fig. 8. visual view,
FIG. 10 is a plan view illustrating an abnormally deformed state of the side wall of the front lid. DESCRIPTION OF SYMBOLS 1... Main body case, 2... Front lid, 2a... Lid side wall, 3... Pivot shaft, 4... Spring member, 4a... Coil part of spring member, 4b... Hook part of spring member, 4c ...Arm portion of spring member, 6...Spring hanging rib, 7...Spring hanging groove, 8... Side wall of main body case, 9... Pivot hole.
Claims (1)
左右の少なくとも一方の蓋側壁2aの内面側にそ
の開閉支点となる枢支軸3を突設し、蓋側壁2a
の内側に対向する本体ケース1の側壁8に前記枢
支軸3が回動自在に嵌入枢支される枢支孔9を設
け、枢支軸3の枢支孔9よりケース内方に臨む先
端寄り側の端部と本体ケース1の内面とにわたつ
て前蓋2を常に閉じ方向に回動付勢するばね部材
4を掛けてあるテープカートリツジにおいて、枢
支軸3上の、前記側壁8とばね部材4間の軸周面
上に枢支孔9よりも径大の鍔10を設けてあるこ
とを特徴とするテープカートリツジ。 A front lid 2 that closes the front surface of the main body case 1 has a pivot shaft 3 that serves as an opening/closing fulcrum protruding from the inner surface of at least one of the left and right lid side walls 2a.
A pivot hole 9 into which the pivot shaft 3 is rotatably fitted and supported is provided in the side wall 8 of the main body case 1 facing the inside of the main body case 1, and the tip of the pivot shaft 3 facing inward of the case from the pivot hole 9 is provided. The side wall 8 on the pivot shaft 3 is attached to the tape cartridge in which a spring member 4 is hung between the end on the near side and the inner surface of the main body case 1 to always bias the front cover 2 in the closing direction. A tape cartridge characterized in that a collar 10 having a larger diameter than the pivot hole 9 is provided on the circumferential surface of the shaft between the spring member 4 and the shaft member 4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985012573U JPH0356925Y2 (en) | 1985-01-30 | 1985-01-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985012573U JPH0356925Y2 (en) | 1985-01-30 | 1985-01-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61130086U JPS61130086U (en) | 1986-08-14 |
JPH0356925Y2 true JPH0356925Y2 (en) | 1991-12-24 |
Family
ID=30495765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985012573U Expired JPH0356925Y2 (en) | 1985-01-30 | 1985-01-30 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0356925Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0514383Y2 (en) * | 1986-09-09 | 1993-04-16 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5690782U (en) * | 1979-12-13 | 1981-07-20 | ||
JPS5783581U (en) * | 1980-11-11 | 1982-05-24 | ||
JPS5890580U (en) * | 1981-12-15 | 1983-06-18 | 富士写真フイルム株式会社 | video tape cassette |
JPS58173072U (en) * | 1982-05-13 | 1983-11-18 | 富士写真フイルム株式会社 | magnetic tape cassette |
JPS5986083U (en) * | 1982-11-30 | 1984-06-11 | 日立マクセル株式会社 | tape cartridge |
-
1985
- 1985-01-30 JP JP1985012573U patent/JPH0356925Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS61130086U (en) | 1986-08-14 |
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