JPH04109112U

JPH04109112U - tape cassette

Info

Publication number: JPH04109112U
Application number: JP1917191U
Authority: JP
Inventors: 秀夫美島
Original assignee: 日本ビクター株式会社
Priority date: 1991-03-05
Filing date: 1991-03-05
Publication date: 1992-09-21

Abstract

(57)【要約】【構成】吸振板９を鋳ぐるむ如くに樹脂層７，８に内
包したことを特徴とするテ−プカセット。【効果】ケ−スの樹脂層に吸振板９を内蔵しているの
でこれが外からの振動エネルギを吸収し、もってテ−プ
カセット１の振動は大幅に抑制される。 (57) [Summary] [Structure] A tape cassette characterized in that a vibration absorbing plate 9 is enclosed in resin layers 7 and 8 as if it were cast inside. [Effects] Since the vibration absorbing plate 9 is built into the resin layer of the case, this absorbs vibration energy from the outside, thereby significantly suppressing the vibration of the tape cassette 1.

Description

[Detailed explanation of the idea]

【０００１】0001

[Industrial application field]

本考案はテ−プカセットの改良技術に関する。 The present invention relates to an improved technology for tape cassettes.

【０００２】0002

[Conventional technology]

図５は従来のビデオテ−プ用テ−プカセットの斜視図であり、テ−プカセット１００はアッパハ−フ（以下「上ケ−ス」と記す）１０１と、ロアハ−フ（以下「下ケ−ス」と記す）１０２と、テ−プ保管時に閉じることでテ−プを保護するガ−ドパネル１０３等から構成され、内側には磁気テ−プ及びリ−ル、その他諸々の部品が収納されている。上ケ−ス１０１には、透明な窓部１０４，１０４とラベル貼着部１０５とが直列配置され、このラベル貼着部１０５にトップラベル１０６が貼着される。 FIG. 5 is a perspective view of a conventional videotape tape cassette. 100 is an upper half (hereinafter referred to as "upper case") 101 and a lower half (hereinafter referred to as "upper case"). (referred to as "lower case") 102, which protects the tape by closing it when storing the tape. It consists of a guard panel 103, etc., and inside there are magnetic tapes, reels, and other items. Various parts are stored. The upper case 101 has transparent windows 104, 104. A label sticking section 105 is arranged in series, and a top label is attached to this label sticking section 105. 106 is pasted.

【０００３】0003

[Problem that the idea aims to solve]

近年、記録、再生機構の高精密化が進み、単純に射出成形された樹脂製のテ− プカセットにも吸振性能が要求されつつあり、吸振シ−トをテ−プカセットの内面若しくは外面に貼着する技術が試みられている。しかし、貼着したものはいずれ剥がれ落ちる恐れがある。また、外面に貼着した場合は目立って見苦しくなる。 In recent years, recording and reproducing mechanisms have become more precise, and simple injection molded resin tapes have become available. Vibration-absorbing performance is increasingly required for tape cassettes, and vibration-absorbing sheets are installed inside tape cassettes. Attempts have been made to apply adhesives to surfaces or external surfaces. However, there is a risk that the adhesive will eventually peel off. Also, it can be pasted on the outside surface. If it does, it will become noticeable and unsightly.

【０００４】そこで、外面貼着の一改良案として、トップラベル１０６を吸振シ−トと兼用する若しくはラベル貼着面１０５に吸振シ−トを貼着し、その吸振シ−トの上にトップラベル１０６を貼着する技術も試みられている。しかしながら、上記兼用品はトップラベル１０６が貼替えられ、消耗品であることからコスト高になる。また、上記吸振シ−ト及びトップラベルを重ねたものにおいては、トップラベル１０６を貼替える際に下の吸振シ−トが一緒に剥がれたり、破損する恐れがある。0004 Therefore, as an improvement to the outer surface adhesion, the top label 106 can also be used as a vibration absorbing sheet. Or attach a vibration absorbing sheet to the label pasting surface 105 and place it on top of the vibration absorbing sheet. Techniques for attaching the top label 106 have also been attempted. However, the top label 106 of the above-mentioned dual-use item has been replaced and is a consumable item. This results in high costs. In addition, the above vibration absorbing sheet and top label may be stacked together. In this case, when replacing the top label 106, the lower vibration absorbing sheet was peeled off along with the top label 106. or may be damaged.

【０００５】[0005]

[Means to solve the problem]

上記の課題を解決すべく本考案は、吸振板を鋳ぐるむ如くに、樹脂層に内包したことを特徴とする。 In order to solve the above-mentioned problems, the present invention incorporates a vibration absorbing plate into a resin layer as if it were cast inside. It is characterized by:

【０００６】[0006]

[Effect]

樹脂層に内包された吸振板が振動エネルギを吸収して、テ−プカセットの振動を抑制する。 A vibration absorbing plate included in the resin layer absorbs vibration energy and reduces the vibration of the tape cassette. suppress.

【０００７】[0007]

【Example】

本考案の実施例を添付図面に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。図１は本考案に係るテ−プカセットの斜視図であり、テ−プカセット１は従来の技術の項で詳述した通り、上ケ−ス２、下ケ−ス３及びガ−ドパネル４等から構成され、上ケ−ス２上面には、２個の窓部５，５とこれら窓部の中間にラベル貼着部６が設けられ、これら窓部５，５及びラベル貼着部６は透明樹脂層７で覆われている。この帯状の透明樹脂層７を除く部分は黒色系の不透明樹脂層８で構成される。 Embodiments of the present invention will be described below based on the accompanying drawings. In addition, the direction of the symbol in the drawing is I will take a look at it soon. FIG. 1 is a perspective view of a tape cassette according to the present invention. As detailed in the technical section, from the upper case 2, lower case 3, guard panel 4, etc. The upper surface of the upper case 2 has two windows 5, 5 and a label between these windows. A pasting part 6 is provided, and these window parts 5, 5 and the label pasting part 6 are covered with a transparent resin layer 7. It is being said. The part other than this band-shaped transparent resin layer 7 is composed of a black opaque resin layer 8. will be accomplished.

【０００８】図２は図１のＡ−Ａ線断面図であり、上ケ−ス２の窓部５，５は透明樹脂層７のみで１層に形成し、窓部５，５以外の部分は、内層を不透明樹脂層８、外層を透明樹脂層７からなる２層構造となっている。[0008] FIG. 2 is a cross-sectional view taken along the line A-A in FIG. The inner layer is an opaque resin layer 8, and the outer layer is an opaque resin layer 8. It has a two-layer structure consisting of a transparent resin layer 7.

【０００９】そして、上記不透明樹脂層８と透明樹脂層７の２層間に、吸振板９が鋳ぐるむ如くに内包されていることに特徴がある。ここで、鋳ぐるむとは吸振板９が射出樹脂で包まれたことをいう。本実施例では吸振板９の片面に形式名や愛称などが印刷されている。９ａは印字面を示す。[0009] A vibration absorbing plate 9 is cast between the opaque resin layer 8 and the transparent resin layer 7. It is characterized by the fact that it is included. Here, casting means that the vibration absorbing plate 9 is injected. It means that it is wrapped in resin. In this embodiment, the model name, nickname, etc. are printed on one side of the vibration absorbing plate 9. printed. 9a indicates the printed surface.

【００１０】吸振板９は、射出される（樹脂層７，８のための）樹脂よりも融点が高いもので、高密度であればよく、例えば鉛、銅、ＰＥＴ（ポリエチレンテレフタレ−ト）が好適である。0010 The vibration absorbing plate 9 has a higher melting point than the resin to be injected (for the resin layers 7 and 8). For example, lead, copper, PET (polyethylene terephthalate) can be used as long as the density is high. ) is preferred.

【００１１】次に、上ケ−ス２の為の金型について説明する。図３はテ−プカセット上ケ−スの金型断面図であり、金型１０は上型に相当する第１の型１１と、下型に相当する第２の型２１からなり、更に第１の型１１はスライド型１２と非スライド型１３とからなる。[0011] Next, the mold for the upper case 2 will be explained. FIG. 3 is a cross-sectional view of the mold for the upper case of the tape cassette, and the mold 10 corresponds to the upper mold. It consists of a first mold 11 that corresponds to a lower mold, and a second mold 21 that corresponds to a lower mold. It consists of a sliding type 12 and a non-sliding type 13.

【００１２】非スライド型１３はいわゆる側型１４，１４をも含み、この側型１４，１４を第２の型２１に嵌合させることから、これらの位置関係は一定に設定される。そして側型１４には第１のキャビティＣ１に臨む第１のゲ−ト１５が設けられ、また非スライド型１３の上部受け板１３ａからは２個の円柱部１３ｂ，１３ｂが垂下し、且つこれら円柱部内に夫々第２のゲ−ト１６，１６が設けられている。ゲ −トは射出成形口である。0012 The non-sliding mold 13 also includes so-called side molds 14, 14, and these side molds 14, 14 are Since they are fitted into the second mold 21, their positional relationship is set constant. So The side mold 14 is provided with a first gate 15 facing the first cavity C1. Two cylindrical parts 13b, 13b hang down from the upper receiving plate 13a of the non-sliding type 13. Second gates 16, 16 are provided below and within these cylindrical portions, respectively. Game - g is the injection molding port.

【００１３】一方、スライド型１２は静止中の非スライド型１３に対して、図中Ｌだけ上下するものであって、その下部に吸振板支持部１２ａが設けられている。なお、この吸振部１２ａの形状は、例えば吸振板９がＰＥＴのように薄いフイルム状で、成形時に射出される樹脂の流れにより、めくれやズレ等が起きそうな場合は凹形状とし、その凹量は吸振板９の厚みとほぼ等しくするが、その危険性がなければ、平面形状でも良い。更に、スライド型１２の中央にはガス抜き部１７が設けられている。このガス抜き部１７はガスにげ用入子１７ａがスライド型１２に隙間をもって嵌合されていて、キャビティＣ１とガス溝１７ｂとが連通する。[0013] On the other hand, the sliding type 12 is up and down by L in the figure with respect to the stationary non-sliding type 13. A vibration absorbing plate support portion 12a is provided at the bottom thereof. In addition, this The shape of the vibration absorbing portion 12a is such that, for example, the vibration absorbing plate 9 is a thin film like PET; If there is a possibility of curling or shifting due to the flow of resin injected during molding, use a concave shape. The amount of concave should be approximately equal to the thickness of the vibration absorbing plate 9, but if there is no risk of this, , it may be a planar shape. Furthermore, a gas venting part 17 is provided in the center of the slide mold 12. It is. This gas venting part 17 has a gap between the gas venting insert 17a and the slide mold 12. The cavity C1 and the gas groove 17b communicate with each other.

【００１４】また、第２の型２１は上面に２個の窓部と１個の凹部を有する。窓部は窓部用凸部２２，２２であり、凹部はラベル貼着部用凹部２３である。窓部用凸部２２，２２に対し前記円柱部１３ｂ，１３ｂが隙間ｔ０，ｔ０を保って離間していることを特徴とする。[0014] Further, the second mold 21 has two windows and one recess on its upper surface. The window is for the window. The convex portions are the convex portions 22, 22, and the concave portion is the concave portion 23 for the label sticking portion. The columnar parts 13b, 13b maintain gaps t0, t0 with respect to the window protrusions 22, 22. It is characterized by being spaced apart.

【００１５】以上の構成から成る金型を用いたテ−プカセット上ケ−スの製造方法を次に述べる。[0015] The method for manufacturing the tape cassette upper case using the mold with the above configuration will be described below. Bell.

【００１６】先ず、図３のスライド型１２下部の吸振板支持部１２ａに吸振板９（図２参照）を嵌合し、次に第３図に示す通りに、第１，第２の型１１，２１を型組みする。この時、第１のスライド型１２は非スライド型１３に対してＬだけ下降し、結果、隙間ｔ１の第１のキャビティＣ１を形成する。なお、上記吸振板９がＰＥＴの場合は、吸振板支持部１２ａを帯電させ、静電吸着させることで、吸振板９は安定保持される。また、吸振板９が銅や鉛の場合は、エア吸引により真空吸着させることで、吸振板９は安定保持される。[0016] First, attach the vibration absorbing plate 9 (see FIG. 2) to the vibration absorbing plate support portion 12a at the bottom of the slide mold 12 in FIG. ), and then assemble the first and second molds 11 and 21 as shown in Fig. 3. . At this time, the first sliding mold 12 is lowered by L relative to the non-sliding mold 13, and the result is As a result, a first cavity C1 with a gap t1 is formed. Note that the vibration absorbing plate 9 is made of PET. In this case, by charging the vibration absorbing plate support part 12a and electrostatically attracting it, the vibration absorbing plate 9 Stably maintained. In addition, if the vibration absorbing plate 9 is made of copper or lead, it will be vacuum-adsorbed by air suction. By doing so, the vibration absorbing plate 9 is stably held.

【００１７】スライド型１２のリング状下隅部１２ｂ、１２ｂと凸部２２，２２の上隅部２２ａ，２２ａが嵌合して形成するキャビティＣ３，Ｃ３は前記第１のキャビティＣ１と連通していない。なお、本実施例ではスライド型１２上面と受け板１３ａとの間にスペ−サ２４…が差し入れてある。[0017] The ring-shaped lower corners 12b, 12b of the slide mold 12 and the upper corners 2 of the convex parts 22, 22 Cavities C3 and C3 formed by fitting 2a and 22a are the first cavity. Not communicating with C1. In addition, in this embodiment, the upper surface of the slide mold 12 and the receiving plate 13a A spacer 24 is inserted between the two.

【００１８】この状態で、第１のゲ−ト１５から黒色系不透明樹脂を射出し、図４（ａ）に示す如く第１のキャビティＣ１へ充填する。黒色系不透明樹脂層８はその粘性により吸振板９の下面に適度に接合する。吸振板９がＰＥＴであれば、相溶性があるのでより良く接合する。不透明樹脂層８が固化したら、スペ−サ２４…を外し、図４（ｂ）に示す如く、スライド型１２を上昇せしめる。結果、厚さｔ１の不透明樹脂層８上に寸法Ｌの新たなキャビティ（第２のキャビティという）Ｃ２が生ずる。[0018] In this state, black opaque resin is injected from the first gate 15, as shown in FIG. 4(a). The first cavity C1 is filled as shown. The black opaque resin layer 8 depends on its viscosity. It is properly bonded to the lower surface of the vibration absorbing plate 9. If the vibration absorbing plate 9 is made of PET, it is compatible. better bonding. Once the opaque resin layer 8 has solidified, remove the spacers 24 and remove the spacers 24 as shown in FIG. 4(b). , the slide mold 12 is raised. As a result, a dimension L is formed on the opaque resin layer 8 having a thickness t1. A new cavity (referred to as a second cavity) C2 is created.

【００１９】この状態で、左・右の第２のゲ−ト１６，１６から透明樹脂を第２のキャビティＣ２は射出し充填する（図４（ｃ））。この時にガスにげ入子１７ａの周囲のガス溝１７ｂを介して、第２のキャビティＣ２内の空気やガスを抜くことにより、樹脂の合流部分即ちウェルドラインＷＬ付近でのブロ−ホ−ルなどを無くし、成形欠陥を減少できる。[0019] In this state, the transparent resin is poured into the second cavity from the left and right second gates 16, 16. The tee C2 is filled by injection (FIG. 4(c)). At this time, the area around the gas insert 17a By venting the air and gas in the second cavity C2 through the gas groove 17b, This eliminates blow holes near the weld line WL where the resin joins. , molding defects can be reduced.

【００２０】このようにして製造された図２の上ケ−ス２において、吸振板９の印字面９ａは透明樹脂層７を通して容易に見ることができる。吸振板９及びその印字面９ａは透明樹脂層７と不透明樹脂層８とで保護されているので破損の恐れはない。[0020] In the upper case 2 of FIG. 2 manufactured in this way, the printed surface 9a of the vibration absorbing plate 9 can be easily seen through the transparent resin layer 7. Vibration absorbing plate 9 and its printed surface 9a Since it is protected by the transparent resin layer 7 and the opaque resin layer 8, there is no risk of damage.

【００２１】また、印字面９ａが気に入らなければ、普通のトップラベル（図５の符号１０６）を透明樹脂層７の上、即ちラベル貼着部６に貼れば良い。[0021] Also, if you do not like the printing surface 9a, you can use an ordinary top label (numeral 10 in Figure 5). 6) may be pasted on the transparent resin layer 7, that is, on the label pasting part 6.

【００２２】そして、上ケ−ス２は吸振板９を内蔵しているのでこれが外からの振動エネルギを吸収し、もってテ−プカセット１の振動は大幅に抑制される。[0022] Since the upper case 2 has a built-in vibration absorbing plate 9, this absorbs vibration energy from the outside. As a result, the vibration of the tape cassette 1 is greatly suppressed.

【００２３】尚、本考案の吸振板９は下ケ−ス３やガ−ドパネル４の樹脂層に内包するようにしても良いことは勿論である。[0023] The vibration absorbing plate 9 of the present invention is encapsulated in the resin layer of the lower case 3 and the guard panel 4. Of course, it is fine to do so.

【００２４】[0024]

[Effect of the idea]

以上に述べた通り本考案は、ケ−スの樹脂層に吸振板９を内蔵しているのでこれに外からの振動エネルギが吸収されて、もってテ−プカセット１の振動を大幅に抑制することができる。 As mentioned above, the present invention has a built-in vibration absorbing plate 9 in the resin layer of the case. This absorbs external vibration energy, thereby significantly reducing the vibration of the tape cassette 1. can be suppressed to

[Brief explanation of drawings]

【図１】本考案に係るテ−プカセットの斜視図[Fig. 1] A perspective view of a tape cassette according to the present invention.

【図２】図１のＡ−Ａ線断面図[Figure 2] Cross-sectional view taken along line A-A in Figure 1

【図３】本考案に係るテ−プカセット上ケ−スの金型断
面図[Figure 3] Cross-sectional view of the mold for the upper case of the tape cassette according to the present invention

【図４】本考案に係る作用説明図[Figure 4] Action explanatory diagram of the present invention

【図５】従来のビデオテ−プ用テ−プカセットの斜視図[Fig. 5] A perspective view of a conventional tape cassette for videotape.

[Explanation of symbols]

１…テ−プカセット、７…透明樹脂層、８…不透明樹脂
層、９…吸振板。DESCRIPTION OF SYMBOLS 1... Tape cassette, 7... Transparent resin layer, 8... Opaque resin layer, 9... Vibration absorbing plate.

フロントページの続き (51)Int.Cl.⁵ 識別記号庁内整理番号ＦＩ技術表示箇所 // Ｂ２９Ｋ 105:22 4ＦＢ２９Ｌ 31:34 4Ｆ Continuing from the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location // B29K 105:22 4F B29L 31:34 4F

Claims

[Scope of utility model registration request]

1. A tape cassette characterized in that a vibration absorbing plate is enclosed in a resin layer so as to be surrounded by a resin layer.