JPS63156399A - Shielding apparatus - Google Patents
Shielding apparatusInfo
- Publication number
- JPS63156399A JPS63156399A JP30410886A JP30410886A JPS63156399A JP S63156399 A JPS63156399 A JP S63156399A JP 30410886 A JP30410886 A JP 30410886A JP 30410886 A JP30410886 A JP 30410886A JP S63156399 A JPS63156399 A JP S63156399A
- Authority
- JP
- Japan
- Prior art keywords
- inner shield
- partition plate
- plate
- outer cover
- shield plate
- 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
- 238000005192 partition Methods 0.000 claims description 20
- 229910000679 solder Inorganic materials 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明はテレビジョン受像機用チューナや0ATVコン
バータ等に使用されるシールド装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a shield device used in tuners for television receivers, 0ATV converters, and the like.
従来の技術
近年、テレビジョン受像機の多チャンネル化に伴すい、
CATvコンバータやグプルスーパ方式のチューナが普
及してきた。Conventional technology In recent years, as television receivers have become multi-channel,
CATv converters and Google Super tuners have become popular.
これらのシステムには、局部発振器が2つ存在し、発振
パワーも大きいので、局部発振器どうしの相互干渉によ
るスプリアスや、入力端子への漏洩が問題となる為、特
に第一局部発振器のブロックを遮蔽すると同時に、その
上からシールド板により全体をおおい、さらに上から外
カバーをはめる構造となっていた。These systems have two local oscillators and the oscillation power is large, so spurious noise due to mutual interference between the local oscillators and leakage to the input terminals are a problem, so it is especially important to shield the block of the first local oscillator. At the same time, the entire structure was covered with a shield plate from above, and an outer cover was fitted from above.
以下、図面を参照しながら、上述したような従来のシー
ルド装置について説明を行なう。第2図は従来のシール
ド装置を示すものである。第2図において1は平面図、
2は断面図である。1はチューナ内の各回路ブロックを
シールドする仕切板、2は局部発振回路ブロックをシー
ルドするシールド蓋、3は仕切板1とシールド蓋2の接
合部を・・ンダ付する・・ンダ、4は各回路ブロック全
体をおおう内シールド板、6はチューナケース全体をお
おう外カバーである。Hereinafter, the conventional shield device as described above will be explained with reference to the drawings. FIG. 2 shows a conventional shielding device. In Fig. 2, 1 is a plan view;
2 is a sectional view. 1 is a partition plate that shields each circuit block in the tuner, 2 is a shield lid that shields the local oscillation circuit block, 3 is a joint between the partition plate 1 and the shield lid 2, and 4 is a solder plate. An inner shield plate covers the entire circuit block, and an outer cover 6 covers the entire tuner case.
以上のように構成されたシールド装置において、局部発
振器からの漏洩を防ぐ為には、かなり厳重なシールドが
必要であり、第2図の2の如く、一般的には外カバー6
の外カバーだけでなく、各回路ブロック全体をおおう内
シールド板4を使って2重にする必要がある。In the shield device configured as described above, a fairly strict shield is required to prevent leakage from the local oscillator, and generally the outer cover 6 is used as shown in 2 in Figure 2.
It is necessary to use the inner shield plate 4 to cover not only the outer cover but also the entire circuit block.
さらに、これだけでは、内シールド板4と仕切板1の密
着度が経時変化で劣化したり、ヒートショックを与える
と、膨張、収縮をくり返してすき間を生じる為、シール
ド効果が悪化したり、外部振動により、接触不良が起こ
り、発振周波数が変化してテレビジョン受像機の画面に
ノイズを発生するという問題がある。そこで一般的には
さらに局部発振器ブロックのみにシールド蓋2を設け、
局部発振器ブロック内にはめ込み、接合部を・・ンダ3
を付し、その上から内シールド板4、及び外カバー5を
被せるという構成をとっていた。Furthermore, if this is done alone, the degree of adhesion between the inner shield plate 4 and the partition plate 1 will deteriorate over time, and if heat shock is applied, the shielding effect will deteriorate due to repeated expansion and contraction, creating a gap. This causes a problem in that contact failure occurs and the oscillation frequency changes, causing noise on the screen of the television receiver. Therefore, generally, a shield lid 2 is further provided only on the local oscillator block.
Insert it into the local oscillator block and connect the joint...
The structure was such that an inner shield plate 4 and an outer cover 5 were placed over the inner shield plate 4 and outer cover 5.
発明が解決しようとする問題点
しかしながら、上記のような構成では、シールド蓋2を
準備して嵌め込み、さらに仕切板1との間でハンダ付を
手半田作業で行わなければならず、生産工程で工数がか
かるという問題点を有していた。Problems to be Solved by the Invention However, with the above configuration, it is necessary to prepare and fit the shield lid 2, and then to solder it to the partition plate 1 by hand, which makes the production process difficult. This has the problem of requiring a lot of man-hours.
本発明は、上記問題点に鑑み、ハンダ付作業等の工数を
かけずに有効なシールドができるシールド装置を提供す
ることを目的とするものである。SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a shield device that can provide an effective shield without requiring any man-hours such as soldering work.
問題点を解決するための手段
この目的を達成するために、本発明のシールド装置は、
内シールド板の中に、仕切板上部と接触する部分に切り
起しを設け、バネ効果を持たせたもので構成したもので
ある。Means for Solving the Problems To achieve this objective, the shielding device of the invention comprises:
The inner shield plate is provided with a cut and raised part in the part that contacts the upper part of the partition plate to give it a spring effect.
作用
この構成によって、外カバーを被せた時、内シールド板
が仕切板上部に押しつけられて、切起し部分のバネ効果
により、完全に内シールド板が仕切板上部と密着するた
め、別途シールド蓋を設けてハンダ付する必要がなく、
良好な接触状態を保つことができることになる。Function: With this configuration, when the outer cover is placed, the inner shield plate is pressed against the top of the partition plate, and due to the spring effect of the cut-and-raised part, the inner shield plate is completely in contact with the top of the partition plate, so you can install the shield cover separately. There is no need to install and solder.
This means that good contact can be maintained.
実施例
以下、本発明の一実施例について、図面を参照しながら
説明する。第1図は本発明の一実施例におけるシールド
装置1は平面図、2は内シールド板の側断面図、3はシ
ールド装置の側断面図を示すものである。第1図におい
て、1はチューナ内の各局部発振器回路ブロック7a〜
7eを分ける仕切板、2は局部発振器ブロック72L〜
7eのほぼ中央に設けた半球状の丸状突起(内シールド
板4に設けたダボ)、3は同じく内シールド板4から切
起した舌片で、仕切板1方向に切起し、曲げを入れたも
のである。4は内シールド板、5は外カバー、6は部品
を装着、配線している基板である。EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 shows a plan view of a shield device 1 in an embodiment of the present invention, 2 a side sectional view of an inner shield plate, and 3 a side sectional view of the shield device. In FIG. 1, 1 indicates each local oscillator circuit block 7a to 7a in the tuner.
Partition plate that separates 7e, 2 is local oscillator block 72L ~
A hemispherical round protrusion (a dowel provided on the inner shield plate 4) provided at approximately the center of 7e, and a tongue piece 3 cut and raised from the inner shield plate 4 are also cut and raised in the direction of the partition plate 1 to prevent bending. This is what I put in. 4 is an inner shield plate, 5 is an outer cover, and 6 is a board on which parts are mounted and wired.
以上のように構成されたシールド装置において、第1図
1は各局部発振器回路ブロック7a〜了eを分ける仕切
板1の上に内シールド板4を被せた状態を示したもので
、局部発振器回路ブロック7a〜7eの仕切板1上部の
4ケ所に、切起しの舌片3が当った状態を示している。In the shield device configured as described above, FIG. 1 shows a state in which the inner shield plate 4 is placed over the partition plate 1 that separates each local oscillator circuit block 7a to 7e. A state in which the cut and raised tongue pieces 3 are in contact with four places on the upper part of the partition plate 1 of the blocks 7a to 7e is shown.
さらに局部発振器回路ブロック7a〜了eの中央付近に
上方向に突出した丸状突起2を設けている。第1図2は
内シールド板4の側断面図で丸状突起2及び切起し3は
、内シールド板4から打抜いたものである。Further, a round projection 2 projecting upward is provided near the center of the local oscillator circuit blocks 7a to 7e. FIG. 1 is a side sectional view of the inner shield plate 4, and the round protrusions 2 and cut-outs 3 are punched out from the inner shield plate 4.
第1図3は内シールド板4の上に外カバー5をはめた状
態の断面図で、丸状突起2の上部が5の外カバーにより
下側に押しつけられるので、切起し3の先端部分が仕切
板1の上部に密着し、バネ効果により密着状態が十分保
持される。FIG. 1 3 is a cross-sectional view of the outer cover 5 fitted on the inner shield plate 4. Since the upper part of the round protrusion 2 is pressed downward by the outer cover 5, the tip of the cutout 3 is in close contact with the upper part of the partition plate 1, and the close contact state is sufficiently maintained due to the spring effect.
以上のように、本実施例のシールド装置によれ、ば、内
シールド板4に切起し3と丸状突起2を設け、外カバー
5によシ、突起部分を下に押さえるようKしたことによ
り切起し部分の先端が仕切り板1の上部に十分圧着する
ため、良好なシールド効果が得られる。As described above, according to the shielding device of this embodiment, the inner shield plate 4 is provided with the cut-and-raised part 3 and the round protrusion 2, and the outer cover 5 is arranged so that the protrusion part is pressed down. As a result, the tip of the cut and raised portion is sufficiently pressed against the upper part of the partition plate 1, so that a good shielding effect can be obtained.
発明の効果
以上のように本発明は、内シールド板に設けた切起しと
丸状突起と、上から押える外蓋とにより、仕切板に内シ
ールド板を十分圧着でき、ヒートショック等により金具
のかしめ度合が少々変化しても、バネ効果があるため、
密着状態が保たれることになり、別のシールド蓋をハン
ダ付けするような必要がないので、材料コスト、工数が
大幅に省略できる。Effects of the Invention As described above, the present invention allows the inner shield plate to be sufficiently crimped to the partition plate by using the cut-out and round projections provided on the inner shield plate and the outer cover that is pressed from above, and the metal fittings can be firmly attached to the partition plate by heat shock or the like. Even if the degree of caulking changes slightly, there is a spring effect, so
Since the close contact state is maintained and there is no need to solder a separate shield lid, material costs and man-hours can be significantly reduced.
第1図は本発明の一実施例のシールド装置の平面図、側
面図、断面図、第2図は従来例のシールド装置の平面図
、断面図である。
1・・・・・・仕切板、2・・・・・・丸状突起、3・
・・・・・切起し、4・・・・・・内シールド板、5・
・・・・外カバー、6・・・・・・基板、Tへ〜7e・
・・・・局部発振器回路プロ7り。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名/−
−−イ士切板FIG. 1 is a plan view, a side view, and a sectional view of a shield device according to an embodiment of the present invention, and FIG. 2 is a plan view and a sectional view of a conventional shield device. 1... Partition plate, 2... Round projection, 3.
・・・・・・Cut up, 4・・・Inner shield plate, 5・
...Outer cover, 6... Board, to T ~ 7e.
...Local oscillator circuit professional 7ri. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
---Ishikiri board
Claims (1)
ックを仕切る仕切板を回路基板上に設置し、その上に全
体を覆う内シールド板を設け、さらにその上に外カバー
を嵌め込み、局部発振器回路ブロックを囲む仕切り板の
上部と内シールド板が接触する部分に内シールド板から
少なくとも1箇所以上の切起しを仕切板の方向に曲げて
設け、前記ブロックの中央付近に、内シールド板から外
カバー方向に半球状の丸状突起を設け、丸状突起部分を
外カバーで押しつけて切起し部分を仕切板上部に密着さ
せるように構成してなるシールド装置。A partition plate is installed on the circuit board to separate each local oscillator circuit block in the tuner or converter, and an inner shield plate is placed on top of it to cover the whole, and an outer cover is fitted on top of it to surround the local oscillator circuit block. At least one cutout is provided from the inner shield plate in the area where the upper part of the partition plate and the inner shield plate contact, bent in the direction of the partition plate, and near the center of the block, from the inner shield plate toward the outer cover. A shield device that has a hemispherical round protrusion and is configured so that the round protrusion is pressed against the outer cover and the cut and raised part is brought into close contact with the upper part of the partition plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30410886A JPS63156399A (en) | 1986-12-19 | 1986-12-19 | Shielding apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30410886A JPS63156399A (en) | 1986-12-19 | 1986-12-19 | Shielding apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63156399A true JPS63156399A (en) | 1988-06-29 |
JPH0480559B2 JPH0480559B2 (en) | 1992-12-18 |
Family
ID=17929126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30410886A Granted JPS63156399A (en) | 1986-12-19 | 1986-12-19 | Shielding apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63156399A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010182928A (en) * | 2009-02-06 | 2010-08-19 | Alps Electric Co Ltd | High-frequency unit |
WO2016181553A1 (en) * | 2015-05-14 | 2016-11-17 | 富士通株式会社 | Surface-mountable shielding unit and electronic device provided with same |
-
1986
- 1986-12-19 JP JP30410886A patent/JPS63156399A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010182928A (en) * | 2009-02-06 | 2010-08-19 | Alps Electric Co Ltd | High-frequency unit |
WO2016181553A1 (en) * | 2015-05-14 | 2016-11-17 | 富士通株式会社 | Surface-mountable shielding unit and electronic device provided with same |
JPWO2016181553A1 (en) * | 2015-05-14 | 2017-12-07 | 富士通株式会社 | Surface mount type shielding unit and electronic device including shielding unit |
Also Published As
Publication number | Publication date |
---|---|
JPH0480559B2 (en) | 1992-12-18 |
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