JPS60214625A - Pushbutton type tuner - Google Patents

Abstract

PURPOSE:To shorten width side and depth size by providing two coupling parts in one body and setting then in the same directions with an inverting and a rotating lever, and coupling a slide part piece which moves forth and back while supporting the variable element of a variable tuning part between those coupling parts. CONSTITUTION:When a knob 21 is rotated while a channel selecting member B3 is returned to a position shown by a virtual line, the rotation is transmitted to the inverting lever 18 and a couple of moving cams 14a and 14b rotate laterally in relative direction by the rotation of the lever 18. Then, slide part piece 44 moves forth and back along a guide lever 46 while rotating in the same direction with the coupling part 41 united to the lever 18 and the rotating lever 16a, and also follows up the variable element 45 to select a channel. When the uninhibited channel selection member B2 of a frequency control plate 7 is pressed, memory pieces 6a and 6b collide against slanting edges 19a and 19b of cam holes 20a and 20b displaced in relative direction and the plate 7 slants, so the its slant angle is set corresponding to the displacement difference between the cam holes 20a and 20b.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a tuning member including a frequency regulating plate having a pair of abutting portions on a support, and a frequency regulating plate disposed in a direction perpendicular to the frequency regulating plate and abutting the abutting portions. 2, each having individually abutted parts
a reversing lever that is connected to one end of the two transverse cam plates and moves the transverse cam plates in a relative direction; Regarding a push-button type tuner equipped with a rotary lever that supports each end of the external force, and a variable tuning part that varies in accordance with the amount of lateral movement of the two lateral movement cam plates, in particular, the variable tuning This is arranged so as to be movable back and forth in an overlapping manner on the array surface of the slide piece that moves back and forth and all the station tracking members, thereby reducing the size of the entire width and depth, and improving the accuracy of channel selection. The present invention provides a push-button tuner with excellent electrical characteristics.

Conventionally, this type of push-button identical device was developed, for example, in Japanese Patent Application Laid-Open No. 54-63.
As shown in Publication No. 602 to No. 56-303LB, generally both ends of the top piece of a T-shaped reversing lever that rotates with the intermediate part as a fulcrum is attached to one end of two transversely moving cam plates. The legs of the reversing lever are connected to each other and are connected to a sliding part that is movable in all the front and back directions, and the sliding part is provided with a variable regulator of a variable tuning section, and the variable tuning part is variable by sliding operation of the tuning member. It is configured to achieve channel selection by varying the tuning section.

By the way, according to this configuration, it is possible to obtain a flat push button type tuner, but the variable tuning part has a force of 711 on one side of the support.
71", which has the problem of increasing the width and depth because it is disposed unevenly in the depth direction.
Generally, the electric circuit components of the radio are wired on a printed circuit board over almost the entire upper surface of the support.
Therefore, if the variable tuning section is provided biased to one side of the support, the electric circuit components of the radio will be biased toward the variable tuning section and connected and wired in a concentrated manner, making the wiring complicated.

Wiring for electric circuit components located far away from the variable synchronizing part becomes long, which tends to cause stray capacitance, and as a result, it picks up low-frequency noise, reducing the accuracy of the 11M and causing interference, which is particularly common. In the case of a band, this defect appears conspicuously.

Therefore, an object of the present application is to solve the above-mentioned disadvantages by arranging the variable tuning section and the sliding section for changing the tuning section in an overlapping manner on the arrangement surface of the tuning member.

Hereinafter, the embodiment will be described in detail with reference to the drawings. The support body A consists of a flat plate, and support plates (1) are provided at the front and rear positions of the support body A.

(2) is provided. The channel selection member B consists of a first mechanism body (3) and a second mechanism body (4) each made of a long plate, and as is well known, the middle part (5) is pivotally attached to the first mechanism body (3). A frequency regulating plate (force) having memory pieces (6)a and (6)b at both end positions, and a deterrent piece (8) that suppresses the force by a tilting action, The second mechanism (4) is also provided with an actuating member (9) for imparting a tilting action.

A push button ←0) and a diagonal connecting hole (II) are provided, and the shaft provided in the actuating member (9) is inserted through the elongated hole q provided in the mechanism body (3). Bin 03)? The moving mechanisms (3) and (4) are connected to be movable relative to each other by being connected to the front connection hole, and the tuning member B configured in this manner
The moving mechanisms (3) and (4) of the support plate (1) of the support body A
+, (21 is slidably equipped. ((侃, (14
) b is a pair of transversely moving cam plates disposed on the surface of the support A so as to be orthogonal to the channel selection member B; On the other hand, a pair of rotating levers (1 shaft, 16 shafts, and The reversing lever (18) is integrally connected to the supporting body A by a pivot rod 071, and its central portion is pivotally connected to both ends of the reversing lever (18).
A pair of lateral moving cam plates (14)a and (14)b move laterally in relative directions. This pair of lateral movement cam plates (14 tassels, (14)
b includes an inclined edge that acts individually with the memory pieces (6)a and (6)b to impart lateral movement to the lateral movement cam plate when the channel selection member B moves forward due to the suppression operation; (19) a.

(2 tigers, (2 crows) with 1% cam hole are opened.

C is a manual adjustment mechanism with a clutch mechanism, with a knob (2+1' (i=) at one end, a worm (221) in the middle, and a support provided at the front and rear ends of the housing support plate (2) of support A). 1 spider rotatably supported on the piece (23+).

A worm wheel 125tf that extends vertically and meshes with the worm (221) in the middle has a universal joint (225) at the lower end.
The story that each had in 61'! 11/I Ifill (2
7) is bent into an L-shape and the bent part is attached to the support body AK shaft (
Pivotally connected by 2 & and abutting piece (29) 'z on the long piece
AiJ universal joint f2G+ '(+-
A friction element (3ol' (i = provided operating rod (31)) that presses against the transmission shaft (271) and the M friction part 08)', and a friction element C1 connected to the friction part α8)')'t
-+- Spring (3z)

D is an operating member that operates the manual adjuster 4*C1, and is made of a long plate (G), which is placed on the front bottom plate of the support A in a direction perpendicular to the sliding direction of the channel selection member B. It is installed so that it can move laterally through the engagement of the elongated hole and pin C351,
On this plate @, when the channel selection member B is pressed, the bottom protrusion (
36) and the inclined edge en v ! which imparts lateral movement to plate G3)! the notch □□□ and the operating rod (II)
There are provided a contact piece and a receiving piece (three pieces) which are always pressed in one direction by the spring l32).

One of the rotating levers 7j (16)aK has a connecting portion (401 integrally provided) extending in a direction perpendicular to this,
Further, the reversing lever is temporarily depressed from its rotation center point,
A connecting portion (41) is integrally provided at a position in the angular direction with respect to the longitudinal direction, and the connecting portion (40!, (41)
) are oriented in the same direction.

And the connecting parts (40) oriented in the same direction in this way
and (41), both ends of a slide piece (44) made of a long plate are connected through engagement between a pin (421) and a long hole (431).

Variable tuning portions (four are disposed above the actuating member) and their variable elements (451' (only one is shown)
is the sliding piece (supported by the front edge of the fence).

(46) is a guide rod that guides both ends of the slide piece (44) so as to be movable back and forth; (471 is a restoration knob 1 of the channel selection member B);

Next, to explain the operation of the present application in detail, in the figure O, the channel selection member B1 is the frequency regulating plate (in the force inhibited state), the channel selection member B2 is the frequency regulating plate (in the non-force inhibited state), and the channel selection member B3 is in the non-force inhibited state. 1 shows the frequency regulating plate (in the state where the force is suppressed and slid forward by the suppression operation).

[In the figure, the channel selection member B3 is at the imaginary line t]
When the knob C]l is rotated in the restored state,
Its rotation is worm (221 and worm wheel 25+
The engagement with the friction transmission part (1 barrel' and the friction element) is transmitted to the reversing lever lever (in the example, the channel selection member B3 is shown pressed, and therefore the friction element (3)
01 and the friction part (lE9' are separated from each other, but normally they are in pressure contact), and the pair of lateral movement cam plates f14)a and Q4)b are moved in the relative direction by the rotation of the reversing lever (16). Move laterally. Then, the connecting part (41) integrated with the reversing lever 0 mark
and − force rotation lever t+, & integral connection part (4(j
rotate in the same direction, and this causes the slide piece (44) to rotate in the same direction.
moves back and forth along the guide rod (46), and the variable element (451' also follows and changes, thereby selecting a station.Then, the selected station is stored in the tuning member,
Channel selection member Bzi in the non-inhibition state method of frequency rejection board (7)
When the pressing operation is performed, the cam hole i2k at the front and rear positions is displaced in the relative direction.

(Each sloped edge Qk of 2 islands, (for 1 glb, memory piece (6
)a and (61b) collide with each other to form a frequency regulation plate (7)
tilts, and the angle of inclination is set corresponding to the displacement difference between the cam holes Δk, (&. If the pressing force is further increased from this state, the actuating member (9) will actuate the restraining piece (8). Then, fix the frequency regulation plate (7) to full suppression and then release the suppression of push button 00).

The channel selection member is restored to the state of waiting for channel selection (the state of the channel selection member B1). If you suppress the channel selection member from this state,
This advances and the pair of memory pieces (6)a, (6 also abuts against the inclined edges of the corresponding cam holes a, (20)b one after another, thereby causing the pair of transversely moving cam plates (14)a,
(IG) moves relative to the angle of inclination stored in the frequency constant plate (7), thereby connecting parts (401 and (41)
) rotate in the same direction, the slide piece (44) moves back and forth, and the variable element (45') changes to achieve channel selection.

When the channel selection member moves forward for channel selection in the above, the protrusion (36) provided at the tip of the second mechanism (4) collides with the force of the inclined edge θ of the corresponding notch (to). , As a result, the actuating member moves laterally to the left in the figure, and the 8 contact piece 1j91 is moved by the spring c12+ by the receiving piece G□□□ provided thereon.
The actuating rod (311) moves 1,000 times counterclockwise in the figure.

As a result, as shown in Fig. 5, the pressure contact between the friction transmission part (18)' and the friction element (7), that is, the clutch is released, and the reversing lever (the 21 pairs of lateral movement cam plates are allowed to rotate freely). 04
Dragon (14yo) is in a state of free lateral movement in the relative direction.

In the above embodiment, a pair of lateral movement cam plates (1 line, α4'
Although the case where one end of the pD is supported by a pair of rotating levers (lk, α0b) is shown, it is of course possible to construct this by a single rotating lever with the middle part pivoted (1). It is.

As described above, according to the present application, the variable tuning section and the sliding section for changing the tuning section are arranged in an overlapping manner on the arrangement surface of the tuning member, so that a compact push button with shortened width and depth can be obtained. can provide an expression tuner, and
By arranging the variable tuning section in the width direction of the support body, electrical circuit components can be distributed and arranged on the printed circuit board, making wiring easier, and wiring between the variable tuning section and the electrical circuit section. The distance can be shortened, and the risk of lower tuning accuracy or interference caused by stray capacitance that occurs in the conventional method can be eliminated, making it even more effective for multi-band applications. Further, since both ends of the slide piece are operated by a pair of rotating pieces, there are advantages such as smooth sliding.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partially omitted overall plan view, and FIG. 2 is a cross-sectional view of I-■ in the figure.
FIG. 3 is a cross-sectional view taken along the line ■--■ in FIG. In the figure, A is the support, B is the channel selection member, C is the manual reviewer Sakaki, and D
is the operating member, (3) is the machine body, (4) is the near 2 mechanism body, (6 is the memory piece, (force is the frequency, constant plate,
(8) is a restraining piece, (9) is an operating part, (14h, 0.
4To is a horizontal movement cam plate. (151, (1,7) is the axis, f161a, (+
6) b is the rotating lever, discharge is the reversing lever, (tg!a, o
gjo is the inclined edge - (20!a, (20)b is the cam hole, (4(]),' (411 is the connecting part, (44) is the slide piece, (451 is the variable tuning part. +45+' is the variable It is an element. Patent applicant: Japan Technical Co., Ltd.

Claims (1)

[Scope of Claims] A tuning member including a frequency regulating plate having a pair of abutting portions on a support body, and an abutted portion disposed in a direction perpendicular to the frequency regulating plate and abutting the abutting portions. Two transversely moving cam plates, each of which is individually provided, and a reversing lever that connects one end of the two transversely moving cam plates to move the transversely moving cam plates laterally in a relative direction. ,
A rotary lever (-) that supports the other end of the two transversely moving cam plates, a variable rotation part that varies in step with the amount of transverse displacement of the two transversely moving cam plates, and a total In the push-button tuner, the reversing lever and the rotary lever are provided integrally with a connecting portion so as to be oriented in the same direction, and a variable element of a variable recirculating portion is provided between the connecting portions. A push-button tuner whose characteristic is a combination of sliding parts that are supported and move back and forth.