JPS6122358Y2 - - Google Patents
Info
- Publication number
- JPS6122358Y2 JPS6122358Y2 JP1980176457U JP17645780U JPS6122358Y2 JP S6122358 Y2 JPS6122358 Y2 JP S6122358Y2 JP 1980176457 U JP1980176457 U JP 1980176457U JP 17645780 U JP17645780 U JP 17645780U JP S6122358 Y2 JPS6122358 Y2 JP S6122358Y2
- Authority
- JP
- Japan
- Prior art keywords
- shield plate
- board
- mounting hole
- circuit
- mounting
- 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
- 239000000758 substrate Substances 0.000 description 11
- 239000002184 metal Substances 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Structure Of Receivers (AREA)
Description
【考案の詳細な説明】
この考案はチユーナ回路の入力増幅回路やミキ
サ回路及び局部発振回路をシールドするシールド
板の取付構体に関するものである。[Detailed Description of the Invention] This invention relates to a mounting structure for a shield plate that shields the input amplifier circuit, mixer circuit, and local oscillation circuit of a tuner circuit.
例えばターレツト式チユーナは一般に間歇回転
操作ができる選局軸を中心としたドラム状周面に
各チヤンネル毎の同調コイルユニツトを配設して
なる回転機構部と、シヤーシベース側に固定たチ
ユーナ回路部品を取付けた電気回路配線体とで構
成されている。回転機構部はシヤーシベースに回
転自在に橋架され、これを間歇回転させることに
より同調コイルユニツトを電気回路配線体の固定
接点群に順次電気的接触させて選局を行つてい
る。電気回路配線体はシヤーシベースの一部を構
成する金属基板やシヤーシベースに取付けるプリ
ント基板などにチユーナ回路の回路部品を配線し
たもので、例えば第１図に示す構造を有する。こ
の第１図に於て、１は金属の基板、２は基板１を
貫通して取り付けられた第１の回路部品、３は基
板１の裏面側で第１の回路部品２の突出リードに
空中配線された第２の回路部品で、第１の回路部
品２はフオノジヤツクや貫通コンデンサ、アース
端子などであり、第２の回路部品３はコンデンサ
や抵抗、トランジスタなどである。この各回路部
品２，３は基板１上で入力増幅回路Ｐ、ミキサ回
路Ｑ及び局部発振回路Ｒを構成している。又、４
及び５は基板１の裏面側に直立させて取付けた従
来のシールド板で、一方のシールド板４は入力増
幅回路Ｐとミキサ回路Ｑの間に挿入され、他方の
シールド板５はミキサ回路Ｑと局部発振回路Ｒの
間に挿入されて、夫々の回路Ｐ，Ｑ，Ｒを高周波
シールドする。 For example, a turret-type tuner generally consists of a rotating mechanism with a tuning coil unit for each channel arranged around a drum-shaped peripheral surface centered on a tuning axis that can be rotated intermittently, and a tuner circuit component fixed to the chassis base. It consists of an attached electric circuit wiring body. The rotating mechanism section is rotatably bridged over the chassis base, and by intermittent rotation of the rotating mechanism section, the tuning coil unit is sequentially brought into electrical contact with the fixed contacts of the electric circuit wiring body to perform tuning. The electric circuit wiring body is a structure in which circuit components of a tuner circuit are wired to a metal substrate constituting a part of the chassis base, a printed circuit board attached to the chassis base, etc., and has a structure shown in FIG. 1, for example. In this Figure 1, 1 is a metal board, 2 is a first circuit component that is attached to the board 1, and 3 is a part that is attached to the protruding lead of the first circuit component 2 in the air on the back side of the board 1. The first circuit component 2 is a phono jack, a feedthrough capacitor, a ground terminal, etc., and the second circuit component 3 is a capacitor, a resistor, a transistor, etc., which are wired. These circuit components 2 and 3 constitute an input amplifier circuit P, a mixer circuit Q, and a local oscillation circuit R on the substrate 1. Also, 4
and 5 are conventional shield plates installed upright on the back side of the board 1, one shield plate 4 is inserted between the input amplifier circuit P and the mixer circuit Q, and the other shield plate 5 is inserted between the mixer circuit Q and It is inserted between local oscillation circuits R to shield each circuit P, Q, and R from high frequencies.
上記一方のシールド板５は比較的狭いスペース
のシールドを行うもので、第２図に示すように全
体がフラツトな一枚板であり、底辺に一つの突出
部５ａを有し、この突出部５ａの一部に切起しに
よる係止片６が底辺に向けて形成されている。こ
のシールド板５に対し、基板１には突出部５ａが
貫通する長穴の取付穴７が穿設されている。この
取付穴７の幅d1は第４図に示すようにシールド板
５の板厚と係止片６の切起し高さを合わせた幅d2
より若干小さめに設定してある。而してシールド
板５は次の順序で基板１に取付けられる。まず突
出部５ａを取付穴７に挿入する。この挿入途中に
d2＞d1であるから係止片６が取付穴７で若干押圧
されて変形するが、シールド板５の底辺が基板１
の裏面に当接する時点で第５図に示すように係止
片６が取付穴７から外れ、係止片６はそのバネ力
で復元して先端が基板１の表面に係止し、これに
よつてシールド板５の抜けが防止される。後はシ
ールド板５を基板１に直立させておいて突出部５
ａと取付穴７の周辺部分とを半田付けしてシール
ド板５を固定、且つ基板１に電気的接続（アー
ス）していた。 One of the above-mentioned shield plates 5 is for shielding a relatively narrow space, and as shown in FIG. A locking piece 6 is formed by cutting and raising a portion toward the bottom side. For this shield plate 5, an elongated attachment hole 7 is bored in the substrate 1, through which the protrusion 5a passes. The width d 1 of this mounting hole 7 is the width d 2 which is the sum of the plate thickness of the shield plate 5 and the cut height of the locking piece 6 , as shown in FIG.
It is set slightly smaller. Thus, the shield plate 5 is attached to the substrate 1 in the following order. First, the protrusion 5a is inserted into the mounting hole 7. During this insertion
Since d 2 > d 1 , the locking piece 6 is slightly pressed and deformed by the mounting hole 7, but the bottom side of the shield plate 5 touches the board 1.
As shown in FIG. 5, the locking piece 6 comes off from the mounting hole 7 when it comes into contact with the back surface of the board 1, and the locking piece 6 is restored by its spring force and its tip locks on the surface of the board 1. Therefore, the shield plate 5 is prevented from coming off. After that, stand the shield plate 5 upright on the board 1 and remove the protrusion 5.
A and the peripheral portion of the mounting hole 7 were soldered to fix the shield plate 5 and electrically connect (ground) it to the board 1.
ところで、このシールド板５の取付けには次の
問題があつた。即ち、シールド板５の板厚を取付
穴７の幅d1と同じ大きさにすると挿入時に係止片
６が潰れるため、シールド板５の板厚はd1より十
分に小さくしておく必要がある。そのため、取付
穴７に突出部５ａを挿入すると取付穴７と突出部
５ａの間に隙間が生じてシールド板５がガタ付
き、これがためシールド板５が半田接続時に第５
図鎖線で示すように傾くことがあつた。このよう
な傾きはシールド板５のシールド効果を損い、時
には近辺にある第２の回路部品３と接触する恐れ
があつた。又、このシールド板５の傾きを防止す
るため、シールド板５を基板１上に直立保持させ
る治具を使つて半田付けすることも行われている
が、これでは作業手間が多くなり、治具のための
スペースを基板１上に必要とするなどの欠点があ
り、好ましくなかつた。 By the way, the following problem occurred in attaching this shield plate 5. That is, if the thickness of the shield plate 5 is made equal to the width d 1 of the mounting hole 7, the locking piece 6 will be crushed during insertion, so the thickness of the shield plate 5 must be made sufficiently smaller than d 1 . be. Therefore, when the protruding part 5a is inserted into the mounting hole 7, a gap is created between the mounting hole 7 and the protruding part 5a, causing the shield plate 5 to wobble.
It sometimes tilted as shown by the chain line in the figure. Such an inclination impairs the shielding effect of the shield plate 5, and sometimes there is a fear that it may come into contact with the second circuit component 3 located nearby. In addition, in order to prevent the shield plate 5 from tilting, soldering is sometimes carried out using a jig that holds the shield plate 5 upright on the board 1, but this requires a lot of work and requires the use of a jig. This is not preferable because it requires a space on the substrate 1 for the purpose of use.
また上記他のシールド板４は第３図に示すよう
に折曲したく字状のもので、夫々の折曲部４ａ，
４ｂの底辺に突出部４ｃ，４ｄを設け、更にこの
突出部４ｃ，４ｄに係止片８，９を突設した構造
を有する。このシールド板４は基板１の各取付穴
１０，１１に突出部４ｃ，４ｄを挿入し、係止片
８，９で抜け防止を図つて半田付けされる。この
場合は前記のフラツトなシールド板５よりも基板
１に対する安定性が良いが、取付穴１０，１１に
挿入した時のガタ付きは避けられず、前記シール
ド板５と同様な欠点があつた。 Further, the other shield plate 4 mentioned above is bent in a dogleg shape as shown in FIG.
It has a structure in which protrusions 4c and 4d are provided on the bottom side of 4b, and locking pieces 8 and 9 are further provided protruding from these protrusions 4c and 4d. The shield plate 4 has protrusions 4c and 4d inserted into the mounting holes 10 and 11 of the substrate 1, and is soldered with the locking pieces 8 and 9 to prevent them from coming off. In this case, the stability with respect to the substrate 1 is better than that of the flat shield plate 5 described above, but wobbling when inserted into the mounting holes 10 and 11 is unavoidable, and it has the same drawback as the shield plate 5 described above.
本考案は上記従来の欠点に鑑み、これを改良・
除去したもので、簡単で而も常に安定した取付け
を可能としたシールド板取付構体を提供する。以
下本考案を各実施例でもつて説明する。 In view of the above-mentioned conventional drawbacks, this invention improves and improves them.
To provide a shield plate mounting structure which enables simple and always stable mounting by removing the shield plate. The present invention will be explained below with reference to each embodiment.
例えば上記ターレツト式チユーナの電気回路配
線体のミキサ回路Ｑをシールドする場合、本考案
は第６図及び第７図に示すようなシールド板１２
を使用する。このシールド板１２の特徴は中央部
１２ａと両側部１２ｂ，１２ｃの３辺の折曲部を
有する点と、中央部１２ａの底辺に設けた突出部
１２ｄに切起しによる係止片１３に加え、以下に
説明するバネ係止部１４を形成した点にある。こ
のシールド板１２の突出部１２ｄは基板１の取付
穴１５に嵌挿されるもので、この取付穴１５の幅
をd3とすると、突出部１２ｄのバネ係止部１４は
突出部１２ｄの両側部を同一方向にd3より若干大
きいd4の切起し高さで折曲した構造を有する。
尚、d4は係止片１３の切起し高さd5より若干小さ
くd3＜d4＜d5の関係にある。 For example, when shielding the mixer circuit Q of the electric circuit wiring body of the turret type tuner, the present invention uses a shield plate 12 as shown in FIGS. 6 and 7.
use. This shield plate 12 is characterized by having bent parts on three sides: a central part 12a and both side parts 12b and 12c, and a locking piece 13 cut and raised on a protrusion 12d provided at the bottom of the central part 12a. , in that a spring locking portion 14, which will be described below, is formed. The protruding portion 12d of the shield plate 12 is fitted into the mounting hole 15 of the board 1. If the width of the mounting hole 15 is d3 , the spring locking portions 14 of the protruding portion 12d are attached to both sides of the protruding portion 12d. It has a structure in which it is bent in the same direction at a cutting height of d4 , which is slightly larger than d3 .
Incidentally, d 4 is slightly smaller than the raised height d 5 of the locking piece 13, and there is a relationship of d 3 < d 4 < d 5 .
このシールド板１２は第８図及至第１０図に示
すように基板１に取付けられる。つまり、突出部
１２ｄを取付穴１５に挿入すると、まずバネ係止
部１４が取付穴１５で押圧されて変形し、次に係
止片１３が変形して突出部１２ｄの圧入が行わ
れ、この圧入が完了する時点で係止片１３が取付
穴１５から外れてシールド板１２の抜け防止がな
される。この時、バネ係止部１４は取付穴１５に
２点で弾圧したままの状態（第１０図参照）であ
るため、シールド板１２は取付穴１５にガタ付く
ことなく弾圧的に仮固定される。一方、基板１の
裏面に中央部１２ａとその折曲両端部１２ｂ，１
２ｃの各底辺が当接しているのでシールド板１２
は傾くことなく基板１上に直立し、その姿勢が安
定に保持される。後はこの状態でシールド板１２
を基板１に半田付けすればよい。 This shield plate 12 is attached to the substrate 1 as shown in FIGS. 8 to 10. That is, when the protruding part 12d is inserted into the mounting hole 15, the spring locking part 14 is first pressed and deformed by the mounting hole 15, then the locking piece 13 is deformed and the protruding part 12d is press-fitted. When the press-fitting is completed, the locking piece 13 is removed from the mounting hole 15 to prevent the shield plate 12 from coming off. At this time, since the spring locking portion 14 remains pressed against the mounting hole 15 at two points (see Fig. 10), the shield plate 12 is temporarily fixed in the mounting hole 15 in an elastic manner without wobbling. . On the other hand, on the back side of the substrate 1, there is a central portion 12a and both bent end portions 12b, 1.
Since each base of 2c is in contact with each other, the shield plate 12
stands upright on the substrate 1 without tilting, and its posture is stably maintained. After that, in this state, attach the shield plate 12
It is sufficient to solder it to the board 1.
次に入力増幅回路ａのシールドに本考案を適用
した場合は第１１図及び第１２図に示すようなシ
ールド板１６を使用する。これは中央部１６ａと
一側部１６ｂの各辺には突出部１６ｄ，１６ｅを
設けて、この突出部１６ｄ，１６ｅに次のバネ係
止部１７，１８を形成したものである。このバネ
係止部１７，１８は突出部１６ｄ，１６ｅの中央
部分より中央部１６ａ及び一側部１６ｂの下部に
かけて２段形状の膨出片を打出した構造のもの
で、この膨出片は下部１７ａ，１８ａが高く、上
部１７ｂ，１８ｂが低く膨出し、中間部１７ｃ，
１８ｃが段となつている。いまこのシールド板１
６を取付ける基板１の取付穴１９，２０の幅を前
記取付穴１５と同じd3とすると、バネ係止部１
７，１８の膨出下片部１７ａ，１８ｂ及び上部１
７ｂ，１８ｂの夫々の高さを前記バネ係止部１４
と同じようにd5及びd4とする。そしてシールド板
１６を第１３図及び第１４図に示すように取付け
る。 Next, when the present invention is applied to the shield of the input amplifier circuit a, a shield plate 16 as shown in FIGS. 11 and 12 is used. This is provided with protruding parts 16d and 16e on each side of the central part 16a and one side part 16b, and the following spring locking parts 17 and 18 are formed on these protruding parts 16d and 16e. These spring locking parts 17, 18 have a structure in which two-step-shaped bulging pieces are punched out from the center parts of the protruding parts 16d, 16e to the lower part of the center part 16a and one side part 16b. 17a, 18a are high, upper parts 17b, 18b are bulged low, middle part 17c,
18c is tiered. Now this shield plate 1
If the width of the mounting holes 19 and 20 of the board 1 to which 6 is attached is set to d 3 , which is the same as the mounting hole 15, then
7, 18 bulging lower piece parts 17a, 18b and upper part 1
7b and 18b are adjusted to the height of the spring locking portion 14.
In the same way, let d 5 and d 4 . Then, the shield plate 16 is attached as shown in FIGS. 13 and 14.
即ち、各取付穴１９，２０に突出部１６ｄ，４
６ｅを圧入して、d3＜＜d5の関係からバネ係止部
１７，１８の膨出片下部１７ａ，１８ａを基板１
の表面に突出させ、膨出片中間部１７ｃ，１８ｃ
を取付穴１９，２０に係止させてシールド板１６
の抜け防止を図る。同時にd3＜d4の関係でバネ係
止部１７，１８の膨出片上部１７ｂ，１８ｂを取
付穴１９，２０に弾圧させてシールド板１６を２
点で仮固定する。更に中央部１６ａと両側部１６
ｂ，１６ｃの３辺でシールド板１６の傾きを防止
する。而して、シールド板１６を基板１に半田付
けする。 That is, the protrusions 16d and 4 are provided in the respective mounting holes 19 and 20.
6e, and from the relationship d3
The intermediate portions 17c and 18c of the bulging pieces protrude from the surface of the
into the mounting holes 19 and 20, and then attach the shield plate 16.
Try to prevent it from coming off. At the same time, due to the relationship d 3 < d 4 , the upper portions 17b and 18b of the bulging pieces of the spring locking portions 17 and 18 are pressed into the mounting holes 19 and 20, and the shield plate 16 is
Temporarily fix at points. Furthermore, the central portion 16a and both side portions 16
The three sides b and 16c prevent the shield plate 16 from tilting. Then, the shield plate 16 is soldered to the board 1.
尚、本考案によるシールド板は上記実施例に限
らず種々の変形が可能で、例えば第６図のバネ係
止部１４の構造を第１１図のシールド板１６に適
用してもよく、また各シールド板１２，１６は更
に多く折曲してより安定化を図ることも可能であ
る。また基板は金属板に限らず、プリント基板で
あつてもよく、この場合はプリント基板のアース
導電パターンにシールド板を半田付けする。 The shield plate according to the present invention is not limited to the above-mentioned embodiments, and can be modified in various ways. For example, the structure of the spring locking portion 14 shown in FIG. 6 may be applied to the shield plate 16 shown in FIG. It is also possible to further stabilize the shield plates 12 and 16 by bending them more. Further, the substrate is not limited to a metal plate, but may be a printed circuit board, and in this case, a shield plate is soldered to the ground conductive pattern of the printed circuit board.
以上説明したように、本考案によればシールド
板はバネ係止部で弾圧的に仮固定されたガタ付き
がなくなり、而も３辺以上の折曲部分で傾きが防
止されるから、傾きのない安定した取付けがで
き、シールド効果の良い安全なシールド板取付構
体が提供できる。またシールド板の突出部を基板
の取付穴に挿し込むだけで取付けができるので、
取付用治具等が不用になり簡単で迅速な取付けが
可能となる。 As explained above, according to the present invention, the shield plate is free from wobbling due to being temporarily fixed elastically at the spring locking portion, and is prevented from tilting at the bent portion on three or more sides. A safe shield plate mounting structure with good shielding effect can be provided. In addition, it can be installed simply by inserting the protruding part of the shield plate into the mounting hole of the board.
Installation jigs and the like are not required, allowing for easy and quick installation.
第１図は従来のシールド板を有する電気部品配
線体の一例を示す斜視図、第２図及び第３図は第
１図の各シールド板の組立分解斜視図、第４図及
び第５図は第２図のＡ−Ａ線に沿う組立前後の各
断面図、第６図は本考案の実施例と示す組立分解
斜視図、第７図は第６図のＢ−Ｂ線に沿う拡大断
面図、第８図は第６図の組立後の斜視図、第９図
は第８図のＣ−Ｃ線に沿う拡大断面図、第９図は
第８図のＤ−Ｄ線に沿う拡大断面図、第１１図は
本考案の他の実施例を示す組立分解斜視図、第１
２図は第１１図のＥ−Ｅ線に沿う拡大断面図、第
１３図は第１１図の組立後の斜視図、第１４図は
第１３図のＦ−Ｆ線に沿う拡大断面図である。
１……基板、１２……シールド板、１２ｄ……
突出部、１４……バネ係止部、１５……取付穴、
１６……シールド板、１６ｄ，１６ｅ……突出
部、１７，１８……バネ係止部、１９，２０……
取付穴。
Figure 1 is a perspective view showing an example of an electrical component wiring body having a conventional shield plate, Figures 2 and 3 are exploded perspective views of each shield plate in Figure 1, and Figures 4 and 5 are exploded perspective views of each shield plate in Figure 1. Each sectional view taken before and after assembly along line A-A in Figure 2, Figure 6 is an exploded perspective view showing an embodiment of the present invention, and Figure 7 is an enlarged sectional view taken along line B-B in Figure 6. , FIG. 8 is a perspective view of FIG. 6 after assembly, FIG. 9 is an enlarged sectional view taken along the line C-C of FIG. 8, and FIG. 9 is an enlarged sectional view taken along the line D-D of FIG. 8. , FIG. 11 is an exploded perspective view showing another embodiment of the present invention.
Figure 2 is an enlarged sectional view taken along line E-E in Figure 11, Figure 13 is a perspective view of Figure 11 after assembly, and Figure 14 is an enlarged sectional view taken along line FF in Figure 13. . 1... Board, 12... Shield plate, 12d...
Projection part, 14... Spring locking part, 15... Mounting hole,
16... Shield plate, 16d, 16e... Projection part, 17, 18... Spring locking part, 19, 20...
Mounting holes.
Claims (1)
穴に挿入してシールド板を基板上に直立させるも
のにおいて、前記シールド板は基板取付面に沿つ
て折曲させると共に前記突出部に前記基板の取付
穴に弾圧的に嵌合するバネ係止部を設けて直立し
て取付けたことを特徴とするチユーナ用シールド
板取付構体。 The shield plate is made to stand upright on the board by inserting a protrusion provided at the bottom of the shield plate into a mounting hole of the board, and the shield plate is bent along the board mounting surface and the protrusion is inserted into the mounting hole of the board. A tuner shield plate mounting structure characterized in that a spring locking part that fits elastically into a mounting hole is provided and is mounted upright.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980176457U JPS6122358Y2 (en) | 1980-12-08 | 1980-12-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980176457U JPS6122358Y2 (en) | 1980-12-08 | 1980-12-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5798056U JPS5798056U (en) | 1982-06-16 |
| JPS6122358Y2 true JPS6122358Y2 (en) | 1986-07-04 |
Family
ID=29969468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980176457U Expired JPS6122358Y2 (en) | 1980-12-08 | 1980-12-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6122358Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4573407B2 (en) * | 2000-07-27 | 2010-11-04 | 浜松ホトニクス株式会社 | Photomultiplier tube |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5428604U (en) * | 1977-07-26 | 1979-02-24 |
-
1980
- 1980-12-08 JP JP1980176457U patent/JPS6122358Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5428604U (en) * | 1977-07-26 | 1979-02-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5798056U (en) | 1982-06-16 |
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