JPS5921119A - Push-button type tuner - Google Patents

Abstract

PURPOSE:To improve the accuracy of channel selection and to realize miniaturization for a push-button type tuner, by connecting an actuating plate and a variable tuning element via a link bar and at the same time setting the moving stroke of the actuating plate larger than the variable stroke of the variable tuning element. CONSTITUTION:A push-button 10 is pulled forward from a position (c) where the button 10 of a control shaft 1 is pressed to the front side. Then the shaft 1 moves to the front side as shown by the position (d), and therefore a primary gear 9 engages a follower gear 10. The button 10 is rotated under such conditions, and a channel selection frame 23 moves back and forth to move an actuating plate 39 back and forth. As a result, a variable tuning element 47 connected via a link bar 44 is varied to select a desired channel. In addition, the moving stroke of the frame 23, i.e., the moving stroke of the plate 39 is set larger than the varying stroke of the element 47. This device ensures high accuracy of channel selection and at the same time reduces the force of collision between the frame 23 and the plate 39. Thus a push-button type tuner can be miniaturized.

Description

【発明の詳細な説明】 本願は、選局精度の向上と小型化をはかることを目的と
した特に多バンド用に有効な押釦式同調器を提供するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present application provides a push-button tuner that is particularly effective for multiple bands and is aimed at improving tuning accuracy and downsizing.

従来、ネジ部に螺合して前後方向に移動可能な選局駒を
有した選局軸を回転並びに前後動自在に備えた支持枠に
、選局軸をその復元用スプリングに抗して前動したとき
、その前動状態を保持するロック板と、前動状態に保持
された選局軸の選局駒と弾圧作用により圧接して可変同
調素子を可変する前後動自在の作動板とを備えて成る押
釦式同調器は、例えば実公昭５１−３６８１１号公報、
同５１−３６８２８号公報などにおいて公知である。Conventionally, a tuning shaft having a tuning piece that is screwed into a threaded part and capable of moving back and forth is attached to a support frame that is rotatable and movable back and forth, and the tuning shaft is moved forward against a restoring spring. A locking plate that maintains the forward moving state when moved, and an actuation plate that can freely move forward and backward that changes the variable tuning element by pressing into contact with the tuning piece of the tuning axis held in the forward moving state by an elastic action. The push-button tuner is disclosed in, for example, Japanese Utility Model Publication No. 51-36811,
This method is known in Japanese Patent Publication No. 51-36828.

ところが公知の押釦式同調器によれば、作動板の両側部
を支持枠に設けた前後方向に長い案内杆により支持せし
めて成るので、特に両側部に近い位置にある選局軸の選
局駒が作動板と衝合したときに、作動板に平面方向のね
じれが生じ易く、これが選局誤差をもたらす惧れがあり
、また従来のものは、作動板に可変同調素子の磁気コア
を直結する構成であるため、選局軸の回転操作による選
局駒の前後方向の移動ストローク即ち選局に必要なスト
ロークと、可変同調素子におけるコイル体に対する磁気
コアの可変ストロークと一致する必要があるが、一般に
選局駒の移動ストロークを大きくする程選局精度を高め
ることができるものであるから、選局精度を高く求めよ
うとして選局駒の移動ストロークを大きくするときは、
これに伴って磁気コアの可変有効ストロークも大きくな
り、その結果同調器の奥行寸法が増し、同調器の小型化
に不向きとなるなどの不都合があった。However, according to the known push-button type tuner, both sides of the actuating plate are supported by longitudinally long guide rods provided on the support frame, so that the tuning pieces of the tuning axis located close to both sides are supported. When the actuating plate collides with the actuating plate, the actuating plate tends to be twisted in the plane direction, which may cause tuning errors.In addition, in conventional systems, the magnetic core of the variable tuning element is directly connected to the actuating plate. Because of the configuration, the stroke of movement of the tuning piece in the back and forth direction by rotating the tuning shaft, that is, the stroke necessary for tuning, must match the variable stroke of the magnetic core with respect to the coil body in the variable tuning element. The larger the moving stroke of the tuning piece, the higher the tuning accuracy can be, so when increasing the moving stroke of the tuning piece in order to obtain higher tuning accuracy,
Along with this, the variable effective stroke of the magnetic core also increases, resulting in an increase in the depth of the tuner, which is disadvantageous in that it is not suitable for downsizing the tuner.

そこで本願は、このような不都合を解消したもので、そ
の実施例を以下図面について詳述する。Therefore, the present application solves such inconveniences, and embodiments thereof will be described in detail below with reference to the drawings.

実施例は、一本の操作軸の左右位置に１対の選局軸を配
し、操作軸にその押圧操作毎に１対の選局軸を相対的に
連結させる構成の多バンド用押釦式同調器について例示
しており、第１図は一本の操作軸と左右二本の選局軸を
一組とする選局機構を、支持枠に対し四組装備し、他の
一組の選局機構についてこれを省略した総体平面図であ
って、操作軸（１）は長尺な軸杆（２）から成り、この
軸杆（２）上に、前後端に下向きの折片（３）ａ、（３
）ｂを有し上面に中間部が枢軸（４）を介して回動自在
に枢着された切換レバー（５）と、この切換レバー（５
）の回動状態を保持するスプリング（６）とを有したコ
字状の支持部片（３）が、前記折片（３）ａ、（３）ｂ
に軸杆（２）を挿通することにより取付けられている。The embodiment is a multi-band push button type in which a pair of tuning shafts are arranged on the left and right positions of a single operating shaft, and the pair of tuning shafts are connected to the operating shaft relatively each time the operating shaft is pressed. An example of a tuner is shown in Fig. 1, in which four sets of tuning mechanisms each consisting of one operating shaft and two left and right tuning shafts are installed on a support frame, and one set of tuning mechanisms is installed on the support frame. This is an overall plan view of the station mechanism with this part omitted, and the operating shaft (1) consists of a long shaft rod (2), and on this shaft rod (2) there are downwardly directed folding pieces (3) at the front and rear ends. a, (3
)b and whose middle portion is rotatably attached to the upper surface via a pivot (4);
) is a U-shaped support piece (3) having a spring (6) that maintains the rotating state of the folded pieces (3)a and (3)b.
It is attached by inserting the shaft rod (2) into the shaft.

前記切換レバー（５）の先端はＶ字状に開く舌片（５）
ａ、（５）ｂを有して幅広に形成されており、この幅広
部に前記支持部片（３）の上面に突設したピン（７）と
係合して前記切換レバー（５）の回動範囲を制限する円
弧状の孔（８）が形成されている。また前記軸杆（２）
の前方部は、軸芯方向で一部側面がカットされて断面非
円形状を呈し、この非円形部（２）ａに回転方向で共動
し軸芯方向にふいて移動する主動歯車（９）が挿通され
ており、後端に押釦（１０）が軸着されている。このよ
うに構成された操作軸（１）は支持枠（１１）ｃの前方
位置で切起しされた前方板（１１）ａと底板（１１）ｃ
の後縁で折曲する後方板（１１）ｂとに回転並びに前後
動自在に支承され、かつ前記主動歯車（９）とそれより
前方に位置して非円形部（２）ａの先端部に固定した止
片（１２）との間にスプリング（１３）が、また前記後
方板（１１）ｂと押釦（１０）との間には操作軸（１）
の復元用スプリング（１４）が夫々介在されている。ま
た支持枠（１１）の底板（１１）ｃには、支持部片（３
）の後片（３）ｂの延長下端部と係合してその前後方向
の摺動を案内する案内孔（１５）が形成されている。前
記操作軸（１）と組をなす１対の選局軸（１６）、（１
６）′は、同一構成からなり、説明の便宜上一方の選局
軸（１６）の具体的構成を示しその他方を図において（
′）を付して区別する。即ち選局軸（１６）は長尺な軸
杆（１７）から成り、その先端には先細状のカム軸（８
）が突設されている。この軸杆（１７）にはネジ部（１
９）と、コ字状に形成されその前後片が前記ネジ部（１
９）を挾むように軸芯方向で固定で回転方向で自由とな
るストッパー部片（２０）と、前記主動歯車（９）と噛
合可能でかつそれよりも径を大きくした従動歯止（２１
）と、前記ネジ部（１９）と螺合し上面に記憶部（２２
）を突設した角状の選局駒（２３）とが夫々設けられ、
かつ前記ストッパー部片（２０）には、前方切換レバー
（５）の一方の舌片（５）ａの後縁と当接して該切換レ
バー（５）に回動力を付与する突片（２４）と、前記切
換レバー（５）の一方の舌片（５）ａの前縁と当接して
前記操作軸（１）の前動時に選局軸（１５）を共動させ
る係止片（２５）とが夫々設けられ、このように構成さ
れた選局軸（１６）と（１６）′とが、前記操作軸（１
）の左右に平行状に位置して支持枠（１１）の前方板（
１１）ａと後方板（１１）ｂとに回転並びに前後動自在
に支承され、かつ前記前方板（１１）ａと従動歯車（２
１）、（２１）′との間には夫々その復元用スプリング
（２６）、（２６）′が介在され、さらに前記支持枠（
１１）の底板（１１）ｃには、前記選局駒（２３）、（
２３）′の下面に設けた突部（２７）と、前記ストッパ
ー部片（２０）、（２０）′の一部（２０）ａ、（２０
）′ａとの係合を介してその前後方向の摺動を案内する
案内孔（２８）と（２８）′とが夫々形成されている。The tip of the switching lever (5) is a tongue piece (5) that opens in a V-shape.
a, (5) and b, and the wide portion engages with a pin (7) protruding from the upper surface of the support piece (3), thereby switching the switching lever (5). An arc-shaped hole (8) is formed to limit the rotation range. Also, the shaft rod (2)
The front part of the front part has a non-circular cross section with a part of the side surface cut in the axial direction, and a main drive gear (9) that moves in conjunction with this non-circular part (2) a in the rotational direction and moves in the axial direction. ) is inserted through it, and a push button (10) is pivotally attached to the rear end. The operating shaft (1) configured in this way has a front plate (11) a and a bottom plate (11) c cut and raised at the front position of the support frame (11) c.
It is rotatably and rotatably supported by a rear plate (11)b that is bent at its rear edge, and is located in front of the main drive gear (9) and at the tip of the non-circular part (2)a. A spring (13) is provided between the fixed stop piece (12), and an operating shaft (1) is provided between the rear plate (11)b and the push button (10).
A restoring spring (14) is interposed respectively. Further, a support piece (3) is attached to the bottom plate (11)c of the support frame (11).
) is formed with a guide hole (15) that engages with the extended lower end of the rear piece (3)b and guides its longitudinal sliding movement. A pair of channel selection axes (16), (1) are paired with the operation axis (1).
6)' has the same configuration, and for convenience of explanation, the specific configuration of one channel selection axis (16) is shown, and the other one is shown in the figure (
') to distinguish them. That is, the tuning shaft (16) consists of a long shaft rod (17), and a tapered cam shaft (8
) is provided protrudingly. This shaft rod (17) has a threaded portion (1
9) is formed in a U-shape, and its front and rear pieces are connected to the threaded portion (1
a stopper piece (20) that is fixed in the axial direction and free in the rotational direction so as to sandwich the main drive gear (9); and a driven gear (21) that can mesh with the main drive gear (9) and has a larger diameter than the main drive gear (9).
) is screwed into the threaded part (19) and has a storage part (22) on the top surface.
) are each provided with a horn-shaped selection piece (23) with a protruding part,
Further, the stopper piece (20) includes a projecting piece (24) that comes into contact with the rear edge of one tongue piece (5)a of the front switching lever (5) to apply rotational force to the switching lever (5). and a locking piece (25) that comes into contact with the front edge of one tongue piece (5)a of the switching lever (5) and causes the tuning shaft (15) to move together when the operating shaft (1) moves forward. The channel selection shafts (16) and (16)' configured in this way are provided with the operating shaft (16), respectively.
) is located parallel to the left and right sides of the support frame (11).
11) A and the rear plate (11) b are rotatably and longitudinally movably supported, and the front plate (11) a and the driven gear (2
Restoration springs (26) and (26)' are interposed between the support frames (26) and (21)', respectively, and the support frame (
11), the bottom plate (11)c has the tuning pieces (23), (
23)', and parts (20)a, (20) of the stopper pieces (20), (20)'.
)'a are formed with guide holes (28) and (28)' which guide the sliding movement in the front and back direction through engagement with the guide hole (28) and (28)', respectively.

しかして操作軸（１）と、その左右に位置する１対の選
局軸（１６）、（１６）′との関係は、例えば切換レバ
ー（５）の一方の舌片（５）ａの前縁が一方の選局軸（
１６）に設けられているストッパー部片（２０）の係止
片（２５）と当接可能な状態にあるとき、押釦（１０）
を前方に押圧すると、操作軸（１）と共に一方の選局軸
（１６）も前方に摺動し、かつこの選局軸（１６）の前
動状態は後述するロック板により保持される（第１図に
おける（イ）の位置の状態）。Therefore, the relationship between the operating shaft (1) and the pair of tuning shafts (16), (16)' located on the left and right sides of the operating shaft (1) is, for example, in front of one tongue piece (5) a of the switching lever (5). The edge is on one side of the selection axis (
When the push button (10) is in a state where it can come into contact with the locking piece (25) of the stopper piece (20) provided on the
When pressed forward, one of the tuning shafts (16) also slides forward together with the operating shaft (1), and the forward movement state of this tuning shaft (16) is maintained by a lock plate (described later). (Situation at position (a) in Figure 1).

そしてこの状態で押釦（１０）の押圧を解くと、操作軸
（１）はその復元用スプリング（１４）により復元する
が、この復元動作時に切換レバー（５）の一方の舌片（
５）ａの後縁が前動状態に保持されている一方の選局軸
（１６）の突片（２４）に衝合して切換レバー（５）は
第１図（ロ）の位置で示される状態から同図（ハ）の位
置で示されるように他力の選局軸（１６）′側に回動切
換されて、今度は切換レバー（５）の他方の舌片（５）
ｂの前縁が他方の選局軸（１６）′に設けられたストッ
パー部片（２０）′の係止片（２５）′と当接可能な状
態となる。即ち操作軸（１）の１往復の前後動毎に、切
換レバー（５）は突片（２４）乃至（２４）′との衝合
作用により交互に回動切換されて、相対的に操作軸（１
）と１対の選局（１６）、（１６）′とが前動方向で共
動可能な状態となる。さらに前記支持枠（１１）の前方
位置には、底板（１１）ｃの面上でその横幅方向に横動
するように、ピン（２９）と長孔（３０）との係合を介
してロック板（３１）が配置されており、このロック板
（３１）は、スプリング（３２）により常時長手方向の
一方に付勢されている。このロック板（３１）の前縁に
設けた垂直片（３３）には、前記いづれか一方の選局軸
（１６）乃至（１６）′が前動したとき、それに設けた
カム軸（１８）乃至（１８）′の先端傾斜部と作用して
ロック板（３１）にその付勢方向と反対方向の横動力を
付与し、かつ前記先端傾斜部が通過したとき、カム軸（
１８）乃至（１８）′の周溝（３４）と係止して前記選
局軸（１６）乃至（１６）′の前動状態を保持する凹状
の係止部（３５）が形成されている。（３６）、（３７
）は前記操作軸（１）に前後して形成した係止用の周溝
、（３８）は前記周溝（３６）、（３７）と選択的に係
止して操作軸（１）の選局操作位置とプリセット位置と
に保持する係止バネで、前記支持枠（１１）の後方板（
１１）ｂの内面に設けられている。When the push button (10) is released from pressure in this state, the operating shaft (1) is restored by its restoring spring (14), but during this restoring operation, one tongue piece of the switching lever (5) (
5) The switching lever (5) is moved to the position shown in Figure 1 (b) with the rear edge of a colliding with the protrusion (24) of one of the tuning shafts (16) held in the forward moving state. As shown in the position shown in FIG.
The front edge of b is in a state where it can come into contact with the locking piece (25)' of the stopper piece (20)' provided on the other tuning shaft (16)'. That is, each time the operating shaft (1) moves back and forth, the switching lever (5) is rotated alternately due to the collision with the protrusions (24) to (24)', and the switching lever (5) is rotated relative to the operating shaft. (1
) and the pair of channel selections (16) and (16)' are in a state where they can move together in the forward movement direction. Further, the front position of the support frame (11) is locked through engagement between a pin (29) and an elongated hole (30) so as to move laterally in the width direction on the surface of the bottom plate (11)c. A plate (31) is arranged, and this lock plate (31) is always biased in one direction in the longitudinal direction by a spring (32). When one of the tuning shafts (16) to (16)' moves forward, the cam shaft (18) to the vertical piece (33) provided on the front edge of the lock plate (31) (18)' applies a lateral force to the lock plate (31) in the opposite direction to its biasing direction, and when the tip slope passes, the camshaft (
Concave locking portions (35) are formed that lock with the circumferential grooves (34) of 18) to (18)' to maintain the forward movement state of the tuning shafts (16) to (16)'. . (36), (37
) is a locking circumferential groove formed before and after the operating shaft (1), and (38) is selectively engaged with the circumferential grooves (36) and (37) to select the operating shaft (1). The rear plate (
11) Provided on the inner surface of b.

（３９）は前動状態に保持されている選局軸（１６）乃
至（１６）′の選局的（２３）乃至（２３）′に有した
記憶部（２２）乃至（２２）′と後縁が圧接する前後動
自在の作動板で、長尺な板から成り、その中央位置にそ
れと直交するように支持杆（４０）が固着されている。(39) is the memory section (22) to (22)' which is provided in the channel selection axis (23) to (23)' of the channel selection axis (16) to (16)' which is held in the forward movement state and the rear part. The operating plate is a longitudinally movable operating plate whose edges are in pressure contact with each other, and is made of a long plate. A support rod (40) is fixed at the center of the plate so as to be perpendicular thereto.

この支持杆（４０）は支持枠（１１）の後方板（１１）
ｂとその底板（１１）ｃの前縁部に上向きに設けた折片
（４１）とに摺動自在に支承され、かつ作動板（３９）
の両側部は支持枠（１１）に止着した案内杆（４２）、
（４２）により夫々支持されている。この作動板（３９
）の中心部には、中間が例えば支持枠（１１）の上面に
設けた上板（１１）ｄに枢軸（４３）を介して回動自在
に取付けたリンク片（４４）の一端が切欠（４５）とピ
ン（４６）との係合を介して連結され、その他端は支持
枠（１１）の底板（１１）ｃの側部に配設した可変同調
素子（４７）のスライド板（４８）に切欠（４９）とピ
ン（５０）との係合を介して連結されている。（５１）
は操作軸（１）のプリセット時に作動するスイッチで、
このスイッチ信号を、例えばＡＦＣ回路を短絡し或いは
同調中心点検出機能回路を閉じ或いはこれらを共に制御
する信号として用いる。This support rod (40) is the rear plate (11) of the support frame (11).
b and a folding piece (41) provided upward on the front edge of the bottom plate (11) c, and is slidably supported by the actuating plate (39).
On both sides of the guide rod (42) fixed to the support frame (11),
(42), respectively. This operating plate (39
), one end of a link piece (44) rotatably attached via a pivot (43) to the upper plate (11) d provided on the upper surface of the support frame (11) has a notch ( 45) and a pin (46), and the other end is a slide plate (48) of a variable tuning element (47) disposed on the side of the bottom plate (11)c of the support frame (11). The notch (49) and the pin (50) are engaged with each other. (51)
is a switch that operates when presetting the operating axis (1).
This switch signal is used, for example, as a signal to short-circuit the AFC circuit, close the tuning center point detection function circuit, or control both of them together.

従ってプリセット操作時にＡＦＣ回路が短絡し或いは同
調中心点検出機能回路が動作するので、同調中心点を極
めて容易に導びき出すことができて、プリセット操作に
便利である。（５２）は作動板（３９）の弾圧スプリン
グである。Therefore, since the AFC circuit is short-circuited or the tuning center point detection function circuit is activated during the preset operation, the tuning center point can be derived extremely easily, which is convenient for the preset operation. (52) is an elastic spring of the actuating plate (39).

次に上記した実施例における作用について以下詳述する
と、第１図の（ハ）の位置に示される選局機構の状態は
、操作軸（１）の押釦（１０）を前方に押圧し、該操作
軸（１）とその左側に隣接する選局軸（１６）とが切換
レバー（５）の一方の舌片（５）ａと係止片（２５）と
の当接により共に前方に移動し、かつ前記選局軸（１６
）がカム軸（１８）の周溝（３４）とロック板（３１）
の係止部（３５）との係止により前動状態に保持された
のち、操作軸（１）が復元して係止バネ（３８）が後位
の周溝（３７）と係止し、かつ切換レバー（５）が他方
の選局軸（１６）′側に切換つている状態を示しており
、この状態から押釦（１０）を手前方向に引くと、同図
（ニ）の位置で示すように操作軸（１）が前方方向に若
干移動して主動歯車（９）が前動保持状態にある一方の
選局軸（１６）の従動歯車（２１）と噛合すると共に、
この状態は前位の周溝（３６）と係止バネ（３８）との
係止により保持されてプリセット状態となる。Next, the operation of the above-described embodiment will be described in detail below.The state of the channel selection mechanism shown in position (c) in FIG. The operation shaft (1) and the channel selection shaft (16) adjacent to the left side of the operating shaft (1) move forward together due to contact between one tongue piece (5)a of the switching lever (5) and the locking piece (25). , and the channel selection axis (16
) is the circumferential groove (34) of the camshaft (18) and the lock plate (31)
After being held in the forward moving state by being locked with the locking portion (35), the operating shaft (1) is restored and the locking spring (38) locks with the rear circumferential groove (37). In addition, the switching lever (5) is shown switching to the other channel selection shaft (16)' side, and when the push button (10) is pulled forward from this state, it will be in the position shown in (d) in the same figure. As shown, the operation shaft (1) moves slightly forward, and the main drive gear (9) meshes with the driven gear (21) of one of the tuning shafts (16), which is in the forward motion holding state.
This state is maintained by the engagement between the front circumferential groove (36) and the engagement spring (38), resulting in a preset state.

この場合主動歯車（９）と従動歯車（２１）との山同志
が当接しても、主動歯車（９）はスプリング（１３）に
抗して前方に逃げ、かつこの状態で押釦（１０）を回転
するとスプリング（１３）の弾力により両歯は自動的に
噛合する。In this case, even if the peaks of the main gear (9) and the driven gear (21) come into contact with each other, the main gear (9) escapes forward against the spring (13), and in this state, the push button (10) is pressed. When rotated, both teeth automatically mesh with each other due to the elasticity of the spring (13).

しかしてこの状態で押釦（１０）を回転すると、小径の
主動歯車（９）と大径の従動歯車（２１）との噛合を介
して一方の軸杆（１７）が回転される。この場合上記歯
車（９）と（２１）との径の相違により、軸杆（１７）
が微細に回転され、その回転により選局的（２３）も前
後方向に微細に移動して、これに設けた記憶部（２２）
と前記作動板（３９）との衝合圧接を介して作動板（３
９）が選局駒（２２）の移動ストロークに相当して前後
動し、これによって前記作動板（３９）にリンク片（４
４）及びスライド部片（４８）を介して連結された可変
同調素子（４７）が可変され、所望の局の選択が行われ
る。このようにして選局的（２３）の移動により一方の
選局軸（１６）に所望の局を記憶させたのち、操作軸（
１）の押釦（１０）を再び押圧すると、今度は切換レバ
ー（５）の他方の舌片（５）ｂと他方の選局軸（１６）
′に備えたストッパー部片（２０）′の係止片（２５）
′との当接により、操作軸（１）と他方の選局軸（１６
）′とが共に前方に移動し、その先端カム軸（１８）′
の傾斜部がロック板（３１）の係止部（３７）に作用し
て該ロック板（３１）を一時的に図において左方向に横
動し、この横動時に、すでに前動状態に保持されている
一方の選局軸（１６）における周溝（３４）と係止部（
３５）との係止が解かれ、該一方の選局軸（１６）はそ
の復元用スプリング（２６）により復元する。他方前記
操作軸（１）と共に前動した他方の選局軸（１６）′の
先端カム軸（１８）′の周溝（３４）′がこれと対向す
る係止部（３７）と係止してその前動状態が保持され、
この状態から押釦（１０）の押圧を解くと、操作軸（１
）は復元すると共に切換レバー（５）が一方の選局軸（
１６）側に切換えられる。次いでこの状態から押釦（１
０）を手前方向に牽引すると、係止バネ（３８）が前方
の周溝（３６）に係止して主動歯車（９）と他方の従動
歯車（２１）′との噛合状態を保持し、この状態から押
釦（１０）を回動操作すると、他方の選局駒（２３）′
が前後動して、これに設けた記憶部（２２）′と作動板
（３９）との衝合圧接を介して作動板（３９）が選局軸
（２２）′の移動ストロークに相当して前後動し、これ
により可変同調素子（４７）が可変されて所望の局が選
択される。このように支持枠（１１）に装備された全て
の選局軸に所望の局を記憶させたのちは、任意の位置の
押釦（１０）を押圧操作して操作軸（１）を前方に移動
することにより、これと選択的に作動連結される左右に
隣接するいづれか一方の選局軸（１６）乃至（１６）′
が共動して前方に移動し、それに設けた選局駒（２３）
乃至（２３）′の記憶部（２２）乃至（２２）′と作動
板（３９）との衝合作用により、選局駒（２３）乃至（
２３）′の記憶している局が作動板（３９）の前後動と
可変同調素子（４７）の可変作用とによって再現される
。However, when the push button (10) is rotated in the levered state, one of the shaft rods (17) is rotated through the meshing of the small-diameter main drive gear (9) and the large-diameter driven gear (21). In this case, due to the difference in diameter between the gears (9) and (21), the shaft rod (17)
is minutely rotated, and due to this rotation, the tuning station (23) is also minutely moved in the front and back direction, and the memory section (22) provided therein is
and the actuating plate (39) through contact pressure welding.
9) moves back and forth corresponding to the movement stroke of the tuning piece (22), thereby causing the link piece (4) to be attached to the actuating plate (39).
4) and a variable tuning element (47) connected via a slide piece (48) is varied to select a desired station. In this way, the desired station is memorized on one of the selection axis (16) by the movement of the selection axis (23), and then the operation axis (
When the push button (10) of 1) is pressed again, the other tongue (5) b of the switching lever (5) and the other channel selection shaft (16)
The stopper piece (20) provided at ', the locking piece (25) of '
′, the operating shaft (1) and the other channel selection shaft (16
)' move forward together, and its tip camshaft (18)'
The inclined portion acts on the locking portion (37) of the lock plate (31) to temporarily move the lock plate (31) horizontally to the left in the figure, and at the time of this horizontal movement, the lock plate (31) is already kept in the forward movement state. The circumferential groove (34) and the locking part (
35) is released, and the one tuning shaft (16) is restored by its restoring spring (26). On the other hand, the circumferential groove (34)' of the tip camshaft (18)' of the other tuning shaft (16)', which moved forward together with the operating shaft (1), engages with the opposing locking portion (37). The pre-motion state is maintained,
When the push button (10) is released from this state, the operating shaft (1
) is restored and the switching lever (5) moves to one of the channel selection shafts (
16) side. Next, press the button (1) from this state.
0) toward the front, the locking spring (38) locks into the front circumferential groove (36) and maintains the meshing state between the main drive gear (9) and the other driven gear (21)'. When the push button (10) is rotated from this state, the other selection piece (23)'
moves back and forth, and the actuating plate (39) moves in a direction corresponding to the movement stroke of the tuning shaft (22)' through the abutment pressure contact between the memory section (22)' provided thereon and the actuating plate (39). It moves back and forth, thereby changing the variable tuning element (47) and selecting a desired station. After storing the desired station on all the tuning axes installed on the support frame (11), press the push button (10) at any position to move the operating axis (1) forward. By doing so, either one of the left and right adjacent tuning shafts (16) to (16)' is selectively and operatively connected to this.
move forward together, and the selection piece (23) placed on it moves forward.
Due to the abutting action between the memory sections (22) to (22)' of the channel selection pieces (23) to (23)' and the actuating plate (39), the selection pieces (23) to (23) to
The memorized station 23)' is reproduced by the back and forth movement of the actuating plate (39) and the variable action of the variable tuning element (47).

上記は、リンク片（４４）の一端部に、単一の受信バン
ド用の可変同調素子（４７）を有したスライド板（４８
）を連結した場合について述べたが、第５図はリンク片
（４４）の一端部に、異なる２つの受信バンド用の可変
同調素子（４７）１と（４７）２を夫々有したスライド
板（４８）１と（４８）２とを、それらの可変ストロー
クに合わせて連結せしめた場合の実施例を示している。The slide plate (48) has a variable tuning element (47) for a single reception band at one end of the link piece (44).
), but FIG. 5 shows a slide plate (47) that has variable tuning elements (47) 1 and (47) 2 for two different reception bands at one end of the link piece (44). An example is shown in which 48) 1 and 48) 2 are connected in accordance with their variable strokes.

具体的には、例えばＡＭ受信バンドにおける最少周波数
が略５２０ＫＨｚで、最高周波数が略１６５０ＫＨｚで
あることから、その可変ストロークＳはの式から、約１
０となり、またＦＭ用受信バンドにおける最少周波数が
略７８ＭＨｚで、最高周波数が略９０ＭＨｚ、であるこ
とから、その可変ストロークＳは約１．３となる（なお
ＬＷ用周波数帯域の場合は約４となり、ＳＷ用周波数帯
域の場合は約９．９となる）から、ＡＭ−ＦＭ兼用の押
釦式同調器を構成するときは、例えばＡＭ用可変同調素
子（４７）１の可変ストロークを１０ｍｍとし、またＦ
Ｍ用可変同調素子（４７）２の可変有効ストロークを１
．３×４＝５．２ｍｍとして、その可変ストロークの比
を約１：２の関係に設定する。そしてリンク片（４４）
他端部にはＡＭ用可変同調素子（４１）１のスライド板
（４８）１を、切欠（４９）とピン（５０）との係合を
介して連結し、またその連結位置と前記枢着位置（４３
）とのほゞ中間位置にＦＭ用可変同調素子（４７）２の
スライド板（４８）１を、長孔（５３）とピン（５４）
との係合を介して連結することにより構成する。Specifically, for example, since the minimum frequency in the AM reception band is approximately 520 KHz and the maximum frequency is approximately 1650 KHz, the variable stroke S is approximately 1 from the equation.
0, and since the minimum frequency in the FM reception band is approximately 78 MHz and the maximum frequency is approximately 90 MHz, the variable stroke S is approximately 1.3 (in the case of the LW frequency band, it is approximately 4). , in the case of the SW frequency band), when configuring a push-button tuner for both AM and FM, for example, the variable stroke of the AM variable tuning element (47) 1 is set to 10 mm, and F
The variable effective stroke of M variable tuning element (47) 2 is set to 1.
．． Assuming 3×4=5.2 mm, the ratio of the variable strokes is set to approximately 1:2. And link piece (44)
The slide plate (48) 1 of the AM variable tuning element (41) 1 is connected to the other end through the engagement of the notch (49) and the pin (50), and the connection position and the pivot Position (43
), place the slide plate (48) 1 of the FM variable tuning element (47) 2 in the middle position between the elongated hole (53) and the pin (54).
The structure is constructed by connecting through engagement with.

第６図は第５図の他の実施例を示しており、この構成は
、支持杆（４０）に代えて作動板（３９）の中間位置に
細巾の支持板（５５）を十字状に一体に設け、その一端
を支持枠（１１）の後方板（１１）ｂに貫通して支持せ
しめ、その他端を前方板（１１）ａに設けた支杆（５６
）により支持せしめると共に、前記作動板（３９）にリ
ンク片（４４）の一端を切欠（４５）とピン（４６）と
の係合を介して連結し、このリンク片（４４）の他端側
の異った位置に、ＡＭ用可変同調素子（４７）１のスラ
イド板（４８）１及びＦＭ可変同調素子（４７）２のス
ライド板（４８）２を、夫々切欠（４９）とピン（５０
）との係合及び長孔（５３）とピン（５４）との係合を
介して連結せしめて成るものである。FIG. 6 shows another embodiment of FIG. 5, in which a thin support plate (55) is placed in the middle of the actuating plate (39) in a cross shape instead of the support rod (40). A support rod (56) is provided integrally, one end of which penetrates and is supported by the rear plate (11)b of the support frame (11), and the other end of which is provided on the front plate (11)a.
), and one end of the link piece (44) is connected to the actuating plate (39) through engagement between the notch (45) and the pin (46), and the other end side of the link piece (44) The slide plate (48) 1 of the AM variable tuning element (47) 1 and the slide plate (48) 2 of the FM variable tuning element (47) 2 are placed in different positions of the notch (49) and the pin (50), respectively.
) and the elongated hole (53) and the pin (54).

また上記した第５図及び第６図は、異った複数の受信バ
ンド用可変同調素子を同一のリンク片に接続した場合を
例示したが、回動テコ比の異なる複数のリンク片に夫々
複数の可変同調素子を夫々連結してもよく、第７図はそ
の具体例奮示している。Furthermore, although FIGS. 5 and 6 above illustrate the case where a plurality of different variable tuning elements for receiving bands are connected to the same link piece, each of the plurality of variable tuning elements is connected to a plurality of link pieces having different rotational lever ratios. The variable tuning elements may be connected to each other, and FIG. 7 shows a specific example thereof.

即ち作動板（３９）の中間位置に、夫々中間が枢軸（４
３）１、（４３）２により上板（１１）ｄに枢着された
二本のバー（４４）１と（４４）２の各一端を、切欠（
４５）１とピン（４６）１との係合及び切欠（４５）２
とピン（４６）２との係合を介して夫々連結したリンク
片（４４）１、（４４）２を互いに反対方向に延長する
と共に、その各他端に、切欠（４９）とピン（５０）と
の係合及び長孔（５３）とピン（５４）との係合を介し
て例えばＡＭ用可変同調素子（４７）１を備えたスライ
ド板（４８）１及びＦＭ用可変同調素子（４７）２を備
えたスライド板（４８）２を夫々連結すると共に、各リ
ンク片（４４）１と（４４）２との回動テコ比を、夫々
ＡＭ用可変同調素子（４７）１とＦＭ用可変同調素子の
可変ストロークに合わせて設けて成るものである。That is, at the intermediate position of the actuating plate (39), the central axis is
3) One end of each of the two bars (44) 1 and (44) 2 pivotally attached to the upper plate (11) d by 1 and (43) 2 is cut out (
45) Engagement between 1 and pin (46) 1 and notch (45) 2
The link pieces (44) 1 and (44) 2, which are connected through engagement with the pin (46) 2, extend in opposite directions, and have a notch (49) and a pin (50) at each other end. ) and the elongated hole (53) and the pin (54), for example, a slide plate (48) 1 equipped with an AM variable tuning element (47) 1 and an FM variable tuning element (47) ) 2 are connected, and the rotational lever ratio of each link piece (44) 1 and (44) 2 is adjusted to the variable tuning element (47) 1 for AM and the variable tuning element (47) 1 for FM, respectively. It is provided in accordance with the variable stroke of the variable tuning element.

本願は叙上のように構成されているので、以下に述べる
ような利点を有する。Since the present application is configured as described above, it has the following advantages.

即ちリンク片の回動テコ比を任意に設定し得るので、選
局軸の選局駒の移動ストロークに拘束されることなく、
任意の可変ストロークをもつ可変同調素子を用いること
ができ、従つて従来のように選局駒の移動ストロークに
合わせ、電気的特性を犠牲にして可変同調素子の可変ス
トロークを定めるか或いはその可変ストロークに合わせ
、機械的精度を犠牲にして選局駒の移動ストロークを定
めるかのような不合理な設計が省略し得ること、選局駒
の移動ストロークを可変同調素子の可変ストロークより
も大きくしたので、高い選局精度が得られると共に、選
局駒と作動板との衝合力が軽減され、かつ同調器の小型
化は有効であること、可変同調素子を任意の位置に配設
できるから同調器の設計が容易であること、作動板の中
心位置にリンク片の一端を連結しているので、作動板に
面方向のねじれが作用してもそのねじれ作用は可変同調
素子の可変ストロークに殆んど影響することなく、特に
そのねじれ作用は作動板の中心位置で支持されていると
きに軽減されて、選局精度の向上が得られることなどの
利点を有し、同調器として極めて有効な発明である。In other words, since the rotation lever ratio of the link piece can be set arbitrarily, it is not restricted by the movement stroke of the tuning piece on the tuning axis.
A variable tuning element having an arbitrary variable stroke can be used. Therefore, the variable stroke of the variable tuning element can be determined by sacrificing the electrical characteristics in accordance with the moving stroke of the tuning piece as in the conventional method, or the variable stroke can be adjusted to the variable stroke. In addition, an unreasonable design such as setting the movement stroke of the tuning piece at the expense of mechanical accuracy can be omitted, and since the movement stroke of the tuning piece is made larger than the variable stroke of the variable tuning element, it is possible to achieve high selection. In addition to achieving high tuning accuracy, the collision force between the tuning piece and the actuating plate is reduced, and the miniaturization of the tuner is effective, and the design of the tuner is easy because the variable tuning element can be placed at any position. Since one end of the link piece is connected to the center position of the actuating plate, even if the actuating plate is torsioned in the plane direction, the torsional action will hardly affect the variable stroke of the variable tuning element. This invention is extremely effective as a tuner, as the torsional effect is particularly reduced when supported at the center of the actuating plate, resulting in improved tuning accuracy.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本願の実施例を示すもので、第１図は一部省略し
た総体平面図、第２図は第１図のＡ−Ａ線断面図、第３
図は第１図のＢ−Ｂ線断面図、第４図は第１図のＣ−Ｃ
線断面図、第５図乃至第７図は他の実施例における作動
板と可変同調素子との連結関係を示す部分平面図である
。 図中（１）は操作軸、（３）は支持部片、（５）は切換
レバー、（９）は主動歯車、（１０）は押釦、（１１）
は支持枠、（１３）、（１４）、（２６）、（２６）′
、（３２）はスプリング、（１６）、（１６）′は選局
軸、（１８）、（１８）′はカム軸、（１９）、（１９
）′はネジ部、（２１）、（２１）′は従動歯車、（２
２）、（２２）′は記憶部、（２３）、（２３）′は選
局駒、（３１）はロック板、（３４）、（３６）、（３
７）は周溝、（３８）は係止バネ、（４０）は支持杆、
（４２）は案内杆、（４３）、（４３）１、（４３）２
は枢着軸、（４４）、（４４）１、（４４）２はリンク
片、（４７）、（４７）１、（４７）２は可変同調素子
（４５）、（４５）１、（４５）２、（４９）、（４９
）１、（４９）２は切欠、（４６）、（４６）１、（４
６）２、（５０）、（５０）１、（５０）２はピン、（
５３）は長孔、（５４）はピン、（５５）は支持板であ
る。 第４図The drawings show an embodiment of the present application, and FIG. 1 is an overall plan view with some parts omitted, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG.
The figure is a sectional view taken along the line B-B in Figure 1, and Figure 4 is a cross-sectional view taken along the line C-C in Figure 1.
The line sectional views and FIGS. 5 to 7 are partial plan views showing the connection relationship between the actuating plate and the variable tuning element in other embodiments. In the figure, (1) is the operating shaft, (3) is the support piece, (5) is the switching lever, (9) is the main drive gear, (10) is the push button, (11)
are support frames, (13), (14), (26), (26)'
, (32) are springs, (16), (16)' are tuning shafts, (18), (18)' are cam shafts, (19), (19)
)' is the threaded part, (21), (21)' are the driven gears, (2
2), (22)' are storage parts, (23), (23)' are channel selection pieces, (31) are lock plates, (34), (36), (3
7) is a circumferential groove, (38) is a locking spring, (40) is a support rod,
(42) is the guide rod, (43), (43)1, (43)2
is a pivot shaft, (44), (44) 1, (44) 2 are link pieces, (47), (47) 1, (47) 2 are variable tuning elements (45), (45) 1, (45) )2, (49), (49
)1, (49)2 are notches, (46), (46)1, (4
6) 2, (50), (50) 1, (50) 2 are pins, (
53) is a long hole, (54) is a pin, and (55) is a support plate. Figure 4

Claims (7)

【特許請求の範囲】[Claims] （１）ネジ部に螺合して前後方向に移動可能な選局駒を
有した選局軸を回転並びに前後動可能に備えた支持枠に
、選局軸をその復元用スプリングに抗して前動したとき
、その前動状態を保持するロック板と、前動状態に保持
された選局軸の選局駒と弾圧作用により圧接して可変同
調素子を可変する前後動自在の作動板とを備えて成る押
釦式同調器において前記作動板と前記可変同調素子とを
、一部が支持枠に枢着されて回動するリンク片を介して
連結すると共に、可変同調素子の可変ストロークよりも
作動板の移動ストロークを大きく設定したことを特徴と
する押釦式同調器。(1) A tuning shaft with a tuning piece that is screwed into a threaded part and movable in the front-rear direction is attached to a support frame that is rotatable and movable back and forth, and the tuning shaft is held against its restoring spring. A lock plate that maintains the forward moving state when moved forward, and an operating plate that can freely move forward and backward that changes the variable tuning element by pressing into contact with the tuning piece of the tuning shaft held in the forward moving state by an elastic action. In the push-button tuner, the actuating plate and the variable tuning element are connected via a rotating link piece, a part of which is pivoted to the support frame, and the variable stroke of the variable tuning element is A push-button tuner characterized by a large movement stroke of the actuating plate. （２）ネジ部に螺合して前後方向に移動可能な選局駒を
有した選局軸を回転並びに前後動可能に備えた支持枠に
、選局軸をその復元用スプリングに抗して前動したとき
、その前動状態を保持するロック板と、前動状態に保持
された選局軸の選局駒と弾圧作用により圧接して可変同
調素子を可変する前後動自在の作動板とを備えて成る押
釦式同調器において、前記作動板の長手方向の中間位置
を前後動可能に支持枠に支持せしめ、かつ前記作動板の
中間位置と前記可変同調素子とを、一部が支持枠に枢着
されて回動するリンク片を介して連結すると共に、可変
同調素子の可変ストロークよりも作動板の移動ストロー
クを大きく設定したことを特徴とする押釦式同調器。(2) A tuning shaft with a tuning piece that is screwed onto a threaded part and movable in the front and back direction is mounted on a support frame that is rotatable and movable back and forth, and the tuning shaft is held against its restoring spring. A lock plate that maintains the forward moving state when moved forward, and an operating plate that can freely move forward and backward that changes the variable tuning element by pressing into contact with the tuning piece of the tuning shaft held in the forward moving state by an elastic action. In the push-button tuner, a longitudinally intermediate position of the actuating plate is supported by a support frame so as to be movable back and forth, and the intermediate position of the actuating plate and the variable tuning element are partially supported by the support frame. A push-button type tuner, characterized in that the push-button type tuner is connected via a link piece that is pivotally attached to and rotates, and the movement stroke of the actuating plate is set larger than the variable stroke of the variable tuning element. （３）ネジ部に螺合して前後方向に移動可能な選局駒を
有した選局軸を回転並びに前後動可能に備えた支持枠に
、選局軸をその復元用スプリングに抗して前動したとき
、その前動状態を保持するロック板と、前動状態に保持
された選局軸の選局駒と弾圧作用により圧接して可変同
調素子を可変する前後動自在の作動板とを備えて成る押
釦式同調器において前記作動板と前記可変同調素子とを
、一部が支持枠に枢着されて回動するリンク片を介して
連結すると共に、可変同調素子の可変ストロークを大き
くすると共に、前記可変同調素子を、受信バンドの異な
る複数の可変同調素子から構成して、前記リンク片上に
、可変同調素子相互間における可変ストロークの短かい
可変同調素子が前記枢着点寄りに位置するように、前記
複数の可変同調素子を夫々連結せしめたことを特徴とす
る押釦式同調器。(3) A tuning shaft with a tuning piece that is screwed into a threaded part and movable in the front and rear directions is attached to a support frame that is rotatable and movable back and forth, and the tuning shaft is held against its restoring spring. A lock plate that maintains the forward moving state when moved forward, and an operating plate that can freely move forward and backward that changes the variable tuning element by pressing into contact with the tuning piece of the tuning shaft held in the forward moving state by an elastic action. In the push-button tuner, the actuating plate and the variable tuning element are connected via a rotating link piece that is partially pivoted to a support frame, and the variable stroke of the variable tuning element is increased. At the same time, the variable tuning element is composed of a plurality of variable tuning elements having different reception bands, and a variable tuning element having a short variable stroke between the variable tuning elements is located on the link piece closer to the pivot point. A push-button tuner, characterized in that the plurality of variable tuning elements are connected to each other. （４）作動板とリンク片との連結点を、作動板の長手方
向の中間に位置させて成る特許請求の範囲第３項記載の
押釦式同調器。(4) The push-button tuner according to claim 3, wherein the connection point between the actuating plate and the link piece is located midway in the longitudinal direction of the actuating plate. （５）ネジ部に螺合して前後方向に移動可能な選局駒を
有した選局軸を回転並びに前後動可能に備えた支持枠に
、選局軸をその復元用スプリングに抗して前動したとき
、その前動状態を保持するロック板と、前動状態に保持
された選局軸の選局駒と弾圧作用により圧接して可変同
調素子を可変する前後動自在の作動板とを備えて成る押
釦式同調器において、受信バンドの異なる複数の可変同
調素子と、前記作動板に連結されかつ一部が支持枠に枢
着された回動テコ比の異なる複数のリンク片とを備える
と共に、前記複数のリンク片に対し、前記複数の可変同
調素子を、その可変ストロークと前記リンク片の回動テ
コ比との大小関係が夫々対応するように夫々連結し、さ
らに前記作動板の移動ストロークを、前記複数の可変同
調素子の可変ストロークよりも大きく設定したことを特
徴とする押釦式同調器。(5) A tuning shaft with a tuning piece that is screwed into a threaded part and movable in the front-rear direction is mounted on a support frame that is rotatable and movable back and forth, and the tuning shaft is held against its restoring spring. A lock plate that maintains the forward moving state when moved forward, and an operating plate that can freely move forward and backward that changes the variable tuning element by pressing into contact with the tuning piece of the tuning shaft held in the forward moving state by an elastic action. A push-button tuner comprising: a plurality of variable tuning elements with different reception bands; and a plurality of link pieces with different rotational lever ratios connected to the actuating plate and partially pivoted to the support frame. The plurality of variable tuning elements are respectively connected to the plurality of link pieces such that the variable strokes of the variable tuning elements correspond to the rotational lever ratios of the link pieces, and A push-button tuner characterized in that a movement stroke is set larger than variable strokes of the plurality of variable tuning elements. （６）作動板とリンク片との連結点を、作動板の長長方
向の中間に位置させて成る特許請求の範囲第５項記載の
押釦式同調器。(6) A push-button tuner according to claim 5, wherein the connection point between the actuating plate and the link piece is located midway in the longitudinal direction of the actuating plate. （７）複数のリンク片を、支持枠の両側方向に夫々延び
るように配置して成る特許請求の範囲第５項または第６
項記載の押釦式同調器。(7) Claim 5 or 6, wherein a plurality of link pieces are arranged so as to extend in both directions of the support frame, respectively.
Push-button tuner as described in section.