JPS6127223Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a push button tuner, in which when the operating rod is pushed in, the clutch lever plate is activated only after the cam plate starts inhibiting the regulator whose position is regulated by the cam plate. It is an object of the present invention to provide a push button tuner that can prevent erroneous displacement of a cam plate, that is, erroneous memorization of a regulator, by taking steps to disconnect the manual tuning parts.

In general, a push button tuner is a type in which a vertically arranged operating rod, on which a fan-shaped regulator is pivotally supported, is pushed in and slid to bring the regulator into contact with a pair of rolling shafts of a rotatable rolling frame. A mold for storing and reading data between the regulator and the rolling frame, and a horizontally arranged regulator with a predetermined shape are pushed in and slid by a pivoting operation rod, and the regulator is moved perpendicular to the pushing direction. There is a type in which the specifier and cam plate are brought into contact with a horizontally arranged cam plate that can be slid freely in the same direction, and memory and reading are performed between the specifier and the cam plate.Recently, the latter type is being produced in large numbers because of its thin profile. However, both types have the following problems.

That is, especially during reading, the predetermined limiter, which is inhibited in advance, comes into contact with the cam plate (the same applies to the rolling frame) as the operating rod is pushed in, forcing the cam plate to return to the memorized position. In order to do this, the cam plate needs to be constructed so that it can slide under low load, so a predetermined clutch mechanism is activated in response to the push-in operation of the operating rod. ,
The connection between the cam plate and the manual tuning section is disconnected, and the cam plate is placed in the above-mentioned low-load sliding state.

However, according to the above configuration, the following drawback occurs. That is, even when the operating rod is pushed in during memorization, the clutch mechanism acts and puts the cam plate in a low-load sliding state, so that the cam plate, which has been set in advance at the desired position by manual synchronization, is moved from the external shock and the specified position. There is a drawback that a slight error in displacement occurs due to the abutment shock of the child (which is rotatable), resulting in erroneous memorization of the specifier.

Therefore, the present invention eliminates the above-mentioned drawbacks, and at the time of memorization, the clutch mechanism operates only after the regulating element comes into contact with the cam plate and is displaced to start its inhibiting operation, bringing the cam plate into a low-load sliding state. To provide a mechanism in which a clutch mechanism operates before a specifier comes into contact with a cam plate at the time of reading to bring the cam plate into a desired low-load sliding state.

FIG. 1 is an overall plan view of one embodiment of a push button tuner according to the present invention, and FIGS. 2 and 3 are exploded perspective views of an operating rod portion and a clutch mechanism portion of the push button tuner, respectively.

In the figure, 1 is a frame lower plate, for example, five guide recesses 2 are integrally formed in parallel at a pitch P on the front end of the bottom plate part 1a, and each guide convex part 2 has a guide groove 2b in the guide plate part 2a, and a guide groove 2b on both sides. A music guide section 2c is provided. The bottom plate portion 1a is formed with five guide grooves 3 (having a narrow groove portion 3a and a wide groove portion 3b) corresponding to each of the guide grooves 2b, and a pair of stoppers is provided on both sides of each guide groove 3. pin part 1b, cutting and raising guide part 1c
are integrally formed. Note that the guide plate portion 2a of the guide convex portion 2
is integrally formed with a predetermined step dimension l above the bottom plate portion 1a. In this case, six coils 26 are attached in parallel to the right bent portion of the lower frame plate 1.

Reference numeral 4 denotes five operating rods, each roughly consisting of a push button plate 5 (having a push button 6), a sliding plate 7, and a restraining cam plate 8. As shown in FIGS. 2 and 4A and 4B, the push button plate 5 is approximately in the shape of a band plate, and has a rear plate portion 5 on the same plane.
It is integrated with the main body plate part 5b by a front plate part 5c which is bent upward with a step dimension l, and has a T-shaped part 5d bent at the rear end and is inclined toward the center of the main body plate part 5b. The edge hole 9 also has guide convex portions 5e on both sides, and the front plate portion 5c has one pin hole 5f. The inclined edge hole 9 has the shape shown in FIG. 4B, and is indicated by arrows C,
parallel edges 9a that are parallel and inclined to the D direction, respectively;
It has an inclined edge 9b and the like.

As shown in FIGS. 2 and 5A and 5B, the sliding plate 7 is approximately in the shape of a band plate, and extends from the main body plate part 7a and the front plate part 7b which is bent upward with a step dimension l. The rear end of the main body plate part 7a is provided with a protrusion 7c, an opening 7d, and a hole 7e, and the front side is provided with both side bending guide parts 10 and an opening 7f, and the front plate part 7b is provided with a bent guide part 10 and an opening 7f. A long hole 7g and both side guide convex portions 7h are provided. The bending guide portions 10 each have a bending claw portion 1.
0a, and only the bending guide portion 10 on the left side in the figure is provided with an engaging recess 10b.

A restraining spring 11, a regulation element 12, a pressing spring 13, etc. are assembled in advance on the upper surface of the sliding plate 7. The restraining spring 11 has a rear end circular portion 11a (having one hole 11b) and a pair of leg portions 11c integrally formed therein. The regulator 12 has a disk shape, and is integrally formed with a convex portion 12c having a pair of abutting portions 12a and 12b at the front end of its upper surface, and is fitted and supported by the circular portion 11a of the restraining spring 11. The presser spring plate 13 has a roughly semicircular shape, and includes a presser convex portion 13a, a first hole 13b, and claw portions 1 on both sides.
3c. In order to assemble each of the above-mentioned parts 11 to 13 to the sliding plate 7, press the pin 14 in FIG.
It is sufficient to insert it into the hole 11b (having the stipulator 12) and fix it to 7e of the sliding plate 7, thereby obtaining the configuration shown in FIG. 7. At this time, the claws 13c on both sides of the presser spring plate 13 engage with the outer periphery of the circular portion 11a of the restraining spring 11, and the position of the retaining spring plate 13 is regulated relative to the restraining spring 11. At the same time, the pressing protrusion 13a moves the regulator 12 into the sliding plate. 7 to prevent floating when the regulator 12 rotates, which will be described later. In this case, the specifier 12 is connected to the abutting portion 12 as shown in FIG.
It is assumed that a and 12b are in symmetrical neutral rotational positions.

The deterrent cam plate 8 has a generally square plate shape, has a tapered hole 8a which is tapered at the back, and is provided with a recess 8b in the middle of both tapered surfaces. The inhibiting cam plate 8 is assembled with a rotating piece 15 inserted and supported by a pin 16 on its upper surface, and is prevented from coming off by fitting and fixing the pin 16, and protrudes by a predetermined distance from the lower surface of the inhibiting cam plate 8. The rotating piece 15 is approximately V-shaped, and the lever portion 1
5a, and a bent convex portion 15b.

The deterrent cam plate 8 (having a rotating piece 15) is fitted on the upper surface of the main body 7a of the sliding plate 7 between the bending guide parts 10 on both sides in the width direction, and is connected to the main body 7a in the thickness direction and a pair of claws. At this time, the lever portion 15a of the rotating piece 15 engages with the engagement recess 10b of the bending guide portion 10, and the downward protrusion of the pin 16 is inserted through the opening 7f. further protrudes from the lower surface of the sliding plate 7 by a predetermined distance. The restraining cam plate 8 can be slid relative to the sliding plate 7 in the directions of arrows A and B in the figure by the above-mentioned fitting, but normally, as shown in FIG. The front ends 11c are respectively set at the sliding limit position in the direction of arrow A, where they are elastically engaged with the pair of recesses 8b of the tapered hole 8a, and in this state, the regulator 12 is in a freely rotatable state. Further, at this time, the pin 16 is located at the front within the opening 7f, and the rotating piece 15 is at the clockwise rotation limit position in the figure due to the restriction of the lever portion 15a and the engagement recess 10b.

To assemble the push button plate 5 and the sliding plate 7 (the deterrent cam plate 8 has already been assembled), first attach the rear plate part 5a, main body plate part 5b, and front plate part 5c of the push button plate 5 to the frame 1, respectively. The narrow groove portion 3a and the wide groove portion 3 of the guide groove 3
b. When stored in the guide groove 2b, the T of the push button plate 5
Both ends of the character portion 5d are in contact with the upper surfaces of both side edges of the narrow groove portion 3a, and a predetermined portion of the front plate portion 5c is positioned in contact with the upper surface of the narrow portion 1d of the bottom plate portion 1a. As a result, the push button plate 5 has its rear plate part 5a and main body plate part 5b arranged within the same thickness as the bottom plate part 1a, and the front plate part 5c arranged within the same thickness as the guide plate part 2a of the guide convex part 2, respectively. In this state, in particular, the guide convex portions 5e on both sides of the main body plate portion 5b are guided by both inner sides of the wide groove portion 3b, and can freely slide in the directions of arrows A and B in FIG.
Therefore, the push button plate 5 is disposed within the same thickness as the frame lower plate 1, and the overall thickness can be reduced.

Next, the sliding plate 7 is brought into contact with the upper surface of the push button plate 5 of the frame lower plate 1, and the main body plate part 7a and the front plate part 7b are brought into contact with the upper surfaces of the bottom plate part 1a and the guide plate part 2a, respectively,
A pair of guide convex portions 7h on both sides of the main body plate portion 7a and a front plate portion 7b are fitted and placed between a pair of cut and raised guide portions 1c and a pair of both side bent guide portions 2c, respectively, and each of the above-mentioned fittings It can be slid freely in the directions of arrows A and B by the guidance of the arrows A and B. At this time, the opening 7 of the sliding plate 7
The T-shaped portion 5d of the push button plate 5 is inserted and protruded through the push button plate 5 in a loose manner, and the lower end of the pin 16 is inserted in the inclined edge hole 9 in a loose manner.

The push button 6 has a guide hole 6a and a pin hole 6b, and is fitted into the guide convex portion 2 of the frame lower plate 1 in the direction of arrow A in the figure, and allows the pin 21 inserted into the pin hole 6b to be pushed along the length of the sliding plate 7. The push button plate 5 is loosely inserted through the hole 7g.
is inserted into the pin hole 5f of the push button 6.
The push button plate 5 has an integral sliding structure, and the operation rod 4 is thus completed by the push button plate 5, the push button 6, the sliding plate 7, and the restraining cam plate 8. A coil spring 22 is fitted into the push button 6 of the guide convex portion 2. Therefore, the operating rod 4 is normally urged in the direction of the arrow A in the figure by a spring 22 as shown in FIG. The pin 21 is urged against the front end of the elongated hole 7g, and the sliding plate 7 is stopped at a position where the front end of the main body portion 7a is urged against the pair of pin portions 1b.

23 is a cam plate, as shown in Figs. 1 to 3;
Five V-shaped cam parts 24 (cam right side 24a,
The cams (having left sides 24b) are formed in parallel with pitch P, and six cores 25 are mounted on the bending plate portion 23a at the right end in FIG. 1 (left side in FIG. 3), and other A rack 23c is formed on the curved plate portion 23b. The cam plate 23 is the bottom plate part 1a of the frame lower plate 1.
Predetermined guide groove on the top surface, arrow C, D by pin fitting
It is mounted so that it can freely slide in any direction and the V-shaped cam portion 24 is positioned above the operating rod 4. Normally, it is in a neutral position and each V
The V-shaped trough of the cam portion 24 corresponds to the center of each operating rod 4, and the contact portions 12a, 1 of the regulator 12 are connected to each other.
2b and facing each other. Also, at this time, each core 25 can move in and out of each coil 26, and the rack 23c is meshed with a pinion 35b, which will be described later. Also, 27 in Figure 1 is a pair of spring plates,
The cam plates 23 are mounted between the frame lower plate 1 and the cam plate 23, respectively, so that the cam plates 23 are pressed against the frame lower plate 1 and allowed to slide.

28 is the clutch lever plate, as shown in Fig. 2, Fig. 3,
As shown in FIG. 7, there are five cam holes 29 in the left and right direction.
are formed in parallel at pitches P, and a projection 28a is formed at the right end in FIG. It is attached to be slidable in the directions of arrows C and D by pin fitting, and at this time, the convex portion 15b of the rotating piece 15 of each operating rod 4 enters into each cam hole 29.
Each cam hole 29 has a boot shape, and one side recess 29
a, an inclined edge 29b, and a straight edge 29c.
The clutch lever plate 28 normally has a protrusion 28a.
As shown in FIG. 3, the convex portion 15b of the rotating piece 15 is in the cam hole 29 in FIG. It is located on the side of the recess 29a.

31 is a band switching lever plate with five cam holes 3.
1a and one lever part 31b, and is disposed on the upper surface of the rear end of the bottom plate part 1a of the frame lower plate 1 in FIG. 1 so as to be slidable in the directions of arrows C and D. As will be described later, when the five operating rods 4 are pushed in, the band switching lever plate 31 is moved in the directions of arrows C and D by abutting the rear end protrusion 7c of each sliding plate 7 against the corresponding cam hole 31a. It slides as appropriate and switches the band switching circuit using the lever portion 31b to select an appropriate band.

Reference numeral 32 denotes a clutch mechanism section, which, as shown in FIGS. 1 and 3, has a support plate 33, a rotating arm 34, a drum 35, roller 41, intermediate shaft 42,
It is constructed by assembling the Oldham joint shaft 43. The support plate 33 is screwed to the vertical plate portion 1e by a pair of bolts 44, and is attached and fixed to the lower frame plate 1 by engaging the lower edge convex portion 33a with the cutout portion 1f of the frame lower plate 1. The support plate 33 further has one square hole 33b,
It has a convex portion 33c, and a plate piece 46 is supported by a pin 45, and the plate piece 46 is rotated downward in the figure by a coil spring 47 stretched between the convex portion 46a and the convex portion 33c. The shaft portion 35d of the drum 35 is pressed into contact with a small-diameter portion 35e that protrudes through the square hole 33b, which will be described later.

The rotating arm 34 has both end arm portions 34a and 34b.
The roller 41 supported on the arm portion 34b is pivotally supported on the vertical plate portion 1e by a pin 48 and is always biased counterclockwise in FIG. 3 by a scissor spring 49. 35a and is stopped, and the other arm portion 3 is stopped as described above.
4a faces the protrusion 28a of the clutch lever plate 28.

The drum 35 includes a large-diameter drum portion 35a with a knurled outer periphery, a pinion 35b, and both shaft portions 35.
c and 35d (having a small diameter portion 35e) are coaxially integrated, and both shaft portions 35c and 35d are inserted into and supported by the vertical plate portion 1e and the square hole 33b of the support plate 33, respectively, and the pinion 35b is It meshes with the rack 23c of the cam plate 23. In this case, the small diameter portion 35e of the shaft portion 35d is pressed downward by the plate piece 46 as described above, and is pressed against the right edge in FIG. 3 while being separated from the lower edge of the square hole 33b. Therefore, the pinion 35b is pressed into engagement with the rack 23c without wobbling in the left-right direction, and backlash is completely eliminated, allowing for good transmission.

The roller 41 has a spherical portion 41c on the right shaft portion in FIG.
A convex universal joint part 41c with a pair of protruding pin parts 41b is formed on the shaft, and the left and right shaft parts are respectively engaged with an arm part 34b of the arm 34 and a concave universal joint part 42e of the intermediate shaft 42, which will be described later. The drum portion 35a of the drum 35 is normally pressed against the drum portion 35a of the drum 35 by the spring 49 as described above.

The intermediate shaft 42 is coaxially integrated with the collar portion 42a and the gear portion 42b, and has a circular hole 42c on the left side in FIG.
A recessed universal joint part 42e consisting of a pair of notches 42d is formed, and the collar part 42a is brought into contact with the edge of the hole (not shown) in the vertical plate part 1e, and the gear part 42b is projected forward. Further, the flange portion 42a is pressed toward the vertical plate portion 1e and stably supported by the U-shaped spring plate 50 screwed to the vertical plate portion 1e.

The Ordal joint shaft 43 has a convex Ordal joint plate 43
a and a pinion 43b integrally coaxially supported by a shaft 51 fixed to the front surface of the vertical plate portion 1e, and the pinion 43b is connected to the gear portion 4 of the intermediate shaft 42.
It meshes with 2b. A manual tuning operation shaft (not shown) is further coaxially provided on the convex Oldham joint plate 43a via the concave Oldham joint plate.

Next, the operation of the push button tuner having the above structure will be explained. First, the manual tuning operation shaft is rotated to rotate the Oldham joint shaft 43 in the direction of the arrow in FIG. 3 via the Oldham joint in FIG. When the pinion 35b is finally rotated in the direction of the arrow while sequentially interlockingly rotating each of them in the direction of the arrow, the cam plate 23 is moved from the neutral position to a predetermined dimension in the direction of arrow c in FIG. 3 due to the engagement of the rack 23c and the pinion 35b. The core 25 slides from the position shown by the two-dot chain line to the position shown by the solid line in FIG. 7, and at the same time each core 25 slides in the direction out from each coil 26 to tune to a desired station.

Next, in order to store the desired station, the steps shown in FIG.
In FIG. 7, a predetermined operating rod 4 is pushed in the direction of arrow B against the coil spring 22 by operating the push button 6. Then, the push button plate 5 slides in the same direction by itself for a short distance, but immediately moves to the parallel edge 9a of the inclined edge hole 9.
The pin 16, which was in contact with the
The pin 16 and the like come into contact with the inclined edge 9b (which is stopped during this time), and at this point, the pushing force is also transmitted to the sliding plate 7 and the restraining cam plate 8 via the pin 16. Therefore, from this point on, each part of the operating rod 4 slides in the direction of arrow A until the regulator 12 is in the neutral rotation position.
approaches the V-shaped cam portion 24 of the cam plate 23 located at the solid line position in FIG. Subsequently, when the operating rod 4 is pushed in, the regulator 12 is rotated clockwise in FIG. 7 while being guided in sliding contact with the right abutment portion 12a toward the V-shaped crest by the cam right side 24a.
Finally, as shown in FIG. 8, the left contact portion 12b comes into contact with the left side 24b of the cam and is stopped from rotating. As a result, the operating rod 4 is temporarily stopped from sliding, and the sliding plate 7
The convex portion 7c at the rear end reaches near the rear side plate of the frame lower plate 1, and as described above, prevents the band switching lever plate 31 from sliding and selects the corresponding band circuit. During this time, the rotating piece 15 also slides in the direction of arrow B, and the convex portion 15b reaches near the straight edge 29c from the side of the concave portion 29a of the cam hole 29 of the clutch lever plate 28, as shown in FIG.

Subsequently, as shown in FIG. 8, when the push button 6 is pushed further, only the push button plate 5 and the inhibiting cam plate 8 integrated therewith via the pin 16 are moved against the stopped sliding plate 7. Both sides of the main body plate portion 5b are guided by the wide groove portion 3b of the frame lower plate 1, and both sides of the push button cam plate 8 are guided by the both side bending guide portions 10 of the sliding plate 7, and the push button cam plate 8 starts to slide in the direction of arrow B. Then, the front ends of the pair of legs 11c of the restraining spring 11 are relatively disengaged from the pair of recesses 8b of the tapered hole 8a of the restraining cam plate 8, and the legs 11c themselves are elastically deformed in the direction toward each other. While being guided, the front end of each leg 11c is successively guided in sliding contact with the tapered hole 8a, and finally is brought into contact with the inner part of the tapered hole 8a as shown in FIG.
At this point, the sliding of the push button plate 5 and the restraining cam plate 8 is stopped. At this time, as described above, the restraining spring 11
The diameter of the circular portion 11b is reduced by forcibly elastically deforming the pair of leg portions 11c in the proximal direction, thereby pressing the outer peripheral surface of the regulator 12 to the desired rotation position. is clamped. The pin 16 reaches near the front end of the opening 7f, and the pin 21 reaches near the front end of the elongated hole 7g.

Furthermore, during this period, the rotating piece 15 also slides relative to the stopped sliding plate 7 together with the inhibiting cam plate 8 in the direction of arrow B, but the lever portion 15a of the rotating piece 15 is pushed into the engagement recess of the sliding plate 7. The engagement is restricted by 10b. Therefore, the rotating piece 15 starts rotating counterclockwise in the figure while sliding in the direction of arrow B from the position shown in FIG.
After being pulled out from the pair of concave portions 8b of the restraining cam plate 8, the convex portion 15b comes into contact with the straight edge 29c of the cam hole 29 of the clutch lever plate 28, pressing the lever plate 28 in the direction of arrow D, and finally rotates to the position shown in FIG. 9.

As a result, the clutch lever plate 28 slides a slight distance in the direction of arrow D from the position shown in FIG. 8 to the position shown in FIG. 9, and as shown in FIG. Press. Therefore, the arm 34 is rotated clockwise in FIG.
c and 42e as fulcrums to separate the lifting roller 41 and the drum portion 35a and disconnect them. Thus, the cam plate 23 is connected to the roller 41
Subsequently, the load on the manual tuning shaft side is disconnected, resulting in a low-load sliding state.

Here, the reason why the cam plate 23 appears in a low load state when the operating rod 4 is pushed in is to easily slide the cam plate 23 during readout selection, which will be described later. Being a burden is not inherently desirable. However, in this configuration, during the above-mentioned memorization operation, only the push button plate 5 and the inhibiting cam plate 8 are pushed in compared to the configuration shown in FIG. While the clutch lever plate 28 is not sliding at all, the front end of the pair of legs 11c of the restraining spring 11 moves to the tapered portion 8a of the restraining cam plate 8 and has already touched the regulator 12. It is a semi-fixed configuration. Therefore, from now on, even if the cam plate 23 enters the low-load sliding state as described above and is further subjected to some external shock or push-in shock of the push button plate 5, the regulator 12 will not move the cam plate 23 (V-shaped cam). The desired station is accurately selected and stored by being clamped at the initial desired rotational position regardless of the section 24).

When the operating rod 4 is finally pushed in as shown in FIG. 9, the inclined edge 9 of the inclined edge hole 9 of the push button plate 5 is
Since the outer periphery of the pin 16 is forcefully pressed against the pin 16, the push button plate 5 and the restraining cam plate 8 are subjected to forces to the right and left in FIG. 9, respectively, due to the slope effect. Therefore, the right guide convex portion 5e of the main body portion 5b of the push button plate 5 is pressed against the right inner side of the wide groove portion 3b of the frame lower plate 1, and at the same time, the left side surface of the restraining cam plate 8 is pressed against the left side bending guide of the sliding plate 7. 10, and as a result, the left side of the main body plate 7a of the sliding plate 7 is pressed against the left cut and raised guide portion 1c of the lower frame plate 1, and the left guide protrusion 7h of the front plate 7b is guided. It is pressed against the inside of the left bending guide part 2c of the convex part 2,
As a result, the push button plate 5, the restraining cam plate 8, and the sliding plate 7
The left and right position is regulated. Since this state is always the same when the operating rod 4 is repeatedly pushed in for the final time, there is no error displacement of the regulator 12 caused by repeated pushing, and accurate storage and reading can be performed.

Next, when the pushing force of the operating rod 4 is released, the operating rod 4 slides back in the direction of arrow A from the position shown in FIG. The configuration shown in FIG. 10 is such that the push button plate 5 is stopped at a position where the pin 16 is switched from the inclined edge 9b of the inclined edge hole 9 to the parallel edge 9a to abut it. During this time, the clutch lever plate 28 is biased in the direction of arrow C by the rotation bias of the spring 49 of the arm 34, and the convex portion 15 of the rotation piece 15 slides back.
When b completes sliding contact with the straight edge 29c of the cam hole 29 and starts sliding contact with the inclined edge 29b, it is successively energized and slid back in the direction of arrow C to the position shown in FIG. (This is the same position as in Figure 7).
At this time, the convex portion 15b is accommodated within the concave portion 29a of the cam hole 29.

As a result, the arm 34 in FIG. 3 is rotated counterclockwise again by the spring 49, and the roller 41 is also rotated downward again to be pressed against the drum portion 35a again and the clutch is brought into a connected state.

Next, the operation of reading out the desired station will be explained, but before that, the cam plate 23 is moved to the 10th position by rotating the manual tuning operation shaft and engaging the pinion 35b and the rack 23c in exactly the same manner as before the memorization operation. It is assumed that the core 25 is slid a predetermined distance in the direction of arrow D from the position shown by the solid line in the figure to the position shown by the two-dot chain line, and thereby each core 25 is inserted and slid into each coil 26 to select another desired station. . First, when the operating rod 4 is pushed in the direction of arrow B from the position shown in FIG. Pin 16 that was in contact
The push button plate 5, the sliding plate 7, and the restraining cam plate 8 begin to integrally slide in the same direction from the time when the push button plate 5, the sliding plate 7, and the inhibiting cam plate 8 switch to contact with the inclined edge 9b.

However, in this case, since the rotary rod 15 is fixed at the clockwise rotation limit position by the restraining regulation of the restraining cam plate and the restraining spring 11, the convex portion 15b immediately contacts the inclined edge of the cam hole 29 of the clutch lever plate 28. It comes into contact with 29b and sequentially slides and guides it while moving to the straight edge 29c, during which time the lever plate 26 is pressed in the direction of arrow D. Therefore, clutch lever plate 2
8 is slid in the direction of arrow D, and in FIGS. 1 and 3, the protrusion 28a of the arm 34
Press a. Therefore, the arm 34 rotates clockwise in FIG. 3 as in the case of memorization, lifts one end of the roller 41, and the roller 41 and drum section 35a are separated, and the cam plate 23 is disconnected from the manual tuning section. It is released and becomes a low load sliding state.

Subsequently, as the operating rod 4 is pushed in, the left contact portion 12b of the regulator 12, which is clamped at the desired rotational position in FIG.
After coming into contact with the V-shaped cam left side 24b of the V-shaped cam portion 24, it is further pushed and slid. Therefore, the cam plate 23 is sequentially guided in sliding contact with the left side 24b of the V-shaped cam by the left abutting portion 12b, and is relatively pressed and slid in the direction of arrow C, and finally the cam plate 23 is brought into contact with the right side 24a of the V-shaped cam by the right abutting portion 12a. It is stopped at the time of contact, and returns to the same position as at the time of memorization, that is, the position shown in FIG. At the same time, the operating rod 4 also stops sliding, resulting in the configuration shown in FIG. 9 as well.

When the operating rod 4 is finally pushed in, the push button plate 5 is pressed so as to slide relative to the sliding plate 7 and the restraining plate 8 in the direction of arrow B, so the inclined edge 9b of the inclined edge hole 9 presses the pin 16 again. As in the above case, the push button plate 5 is restricted to the right by the slope effect, and the restraining cam plate 8 and the sliding plate 7 are restricted to the left. The regulation is returned to the same position.

Subsequently, when the pushing force of the operating rod 4 is released, the operating rod 4 is slid back in the direction of arrow A by the spring 22 from the position shown in FIG.
The sliding plate 7 is spaced apart from the cam part 24, and the sliding plate 7 is
The push button plate 5 is brought into contact with the pair of pin portions 1b, and the push button plate 5 is stopped by switching the pin 16 into contact with the parallel edge 9a of the inclined edge hole 9, resulting in the configuration shown in FIG. At the same time, the clutch lever plate 28 is guided by the convex portion 15b of the rotary piece 15 into sequential sliding contact with the straight edge 29c and the inclined edge 29b of the cam hole 29, and slides back in the direction of arrow C, reaching the position shown in FIG. As a result, the arm 34 in FIG. 3 returns to rotation, and the roller 41 returns to pressure contact with the drum portion 35a.

The readout operation is thus completed, and the cam plate 23 is slid back to exactly the same position as when it was memorized by the regulation of the regulator 12 as described above, and the core 25 slides out from the coil 26 to exactly return to the same desired position. is read out and selected.

Next, rotate the manual tuning operation shaft to adjust the cam plate 2.
To select another station by sliding the button 3, and to memorize this station, in the configuration shown in FIG. slides integrally with the restraining plate 8 by a predetermined distance in the same direction through the contact between the parallel edge 9a of the inclined edge hole 9 and the pin 16 (only the sliding plate 7 abuts against the pair of pin portions 1b). ), push button 6
The pin 21 comes into contact with the front edge of the elongated hole 7g of the sliding plate 7 and is stopped at the position shown in FIG. Note that the pin 16 returns to a position near the front end of the opening 7f. During this time, the front end of the pair of legs 11c of the deterrent spring 11 is connected to the deterrent cam plate 8.
The legs 11c are successively guided in sliding contact with the tapered hole 8a from the inner part of the tapered hole 8a, and are themselves elastically deformed in the direction of separation from each other, and finally return to engagement with the pair of concave portions 8b, whereby the circular portion 11a The diameter of the regulator 12 is enlarged and restored, the clamp is released, and the regulator 12 is again in a freely rotatable state.

During this period, the rotating piece 15 slides in the direction of arrow B and is simultaneously rotated back clockwise due to the engagement restriction between the lever portion 15a and the engaging recess 10b of the stopped sliding plate 7, as shown in FIG. The convex portion 15b returns to the position on the side of the concave portion 29a of the cam hole 29. In this way, the operating rod 4 has returned to the initial position shown in FIG. 7. To select another station, simply press the operating rod 4 again in exactly the same manner as above. good.

According to the above structure and operation, the pin 16 of the deterrent cam plate 8 (sliding plate 7) is only inserted loosely into the inclined edge hole 9 of the push button plate 5, and the lower end of the pin 16 is inserted, etc. No work is required, reducing assembly man-hours,
Therefore, disassembly, inspection, and maintenance are easy.

Also, a deterrent cam plate 8, a deterrent spring 11, and a regulator 12
In this structure, substantially the entire outer circumference of the regulator 12 is supported by the circular part 11a of the restraining spring 11,
The deterrent cam plate 8 is a pair of legs 11c of the deterrent spring 11.
Since the restraining spring 11 is configured to clamp the channel, the overall structure can be made thinner by only being displaced in the horizontal direction, and the regulator can rotate stably with the above structure, improving the accuracy of channel selection.

Furthermore, when the operating rod 4 is pushed in, the pair of abutting portions 12a and 12b of the regulator 12 touch the V-shaped cam surface 2 of the cam plate 23, respectively.
Since the cam plate 23 is configured to simultaneously contact the cam right side 24a and the cam left side 24b of No. 4, the cam plate 23 is moved in the direction of arrow C and D.
Forces in various directions are simultaneously received and substantially cancel each other out, so that the cam plate 23 is not subjected to a large force in only one direction. Therefore, the positioning of the cam plate 23 is stabilized, and the accuracy of channel selection can be further improved. Note that the pair of abutting portions of the regulator 12 are not limited to the above-mentioned configuration, and for example, a pair of pin portions may be implanted therein.

In addition, the push button 6 is always guided by the guide protrusion 2 provided on the lower frame plate 1, and even if a force other than the sliding direction is applied to the push button 6, it slides stably in the sliding direction, so the entire operating rod 4 is also stable. The channel selection accuracy can be further improved by sliding the channel.

Furthermore, the structure of the clutch mechanism section 32 includes a roller 41 and a drum 35, and the roller 41 itself transmits power and rotates back and forth to have the function of connecting and disengaging the clutch, and there is no need to provide a clutch plate or the like. It can be made simple and compact, the operation is stable, and the cost can be reduced.

In the above embodiment, the rotation of the rotating piece 15 pivotally supported on the restraining cam plate 8 is restricted by the engagement recess 10b of the sliding plate 7, but the invention is not limited to this. It may be configured such that the supported rotation piece is restricted from rotating by the engaging portion of the restraining cam plate 8 to operate the clutch lever plate 28.

Further, in the above embodiment, the positions of the push button plate 5, the suppressing cam plate 8, and the sliding plate 7 are regulated by the inclined edge hole 9 of the push button plate 5 and the pin 16 of the suppressing spring plate 8 at the time of final pushing. However, the present invention is not limited to this, and conversely, a pin protruding from the push button plate 5 may be inserted into an inclined edge hole 9 provided on the restraining cam plate 8.

As described above, according to the push button tuner of the present invention, a predetermined rotating piece pivotally supported on one of the inhibiting cam members is provided so as to be interlockable with the regulating portion provided on the other, and also with the clutch member, and at least the push button When the member is pushed in and the memorized channel selection is performed, the regulating member, which is regulated and displaced by the member to be memorized, starts to be restrained and is semi-fixed, and then the rotary piece, whose rotation is regulated and displaced by the regulating portion, is pressed against the clutch member. Since the structure is such that the clutch member is brought into contact with the clutch member and displaced in the connection/disconnection direction, especially during memorized channel selection, the memorized member becomes in a low-load sliding state due to the connection/disconnection of the clutch member, which may result in erroneous displacement due to unnecessary external force or the like. However, at this point, the specifier has already been regulated and inhibited by the memorized member, so accurate memorized tuning can be performed and readout is also accurate. This device has the advantage of being simple in construction by simply providing a rotating piece on the member and providing an engaging recess and a cam hole on the sliding member and the clutch member, respectively.

[Brief explanation of the drawing]

FIG. 1 is an overall plan view of one embodiment of the push button tuner according to the present invention, FIGS. 2 and 3 are exploded perspective views of the operating rod portion and clutch mechanism portion of the push button tuner, respectively, and FIGS. 4 A and B 5A and 5B are side and bottom views of the sliding plate, respectively, and FIG. 6 is a top view of the frame to which the clutch lever plate of the push button tuner is attached. The bottom view of the plate and FIGS. 7 to 10 are plan views showing the operation configuration of the push button tuner before the operating rod is pressed, during the first stage of pushing, during the second stage of pushing, and when the slide returns. 1... Frame lower plate, 2... Guide convex portion, 4...
Operation rod, 5...Push button plate, 6...Push button, 7...Sliding plate, 8...Suppression cam plate, 9...Slanted edge hole, 9b,
29b...slanted edge, 10b...engaging recess, 11...
...deterrent spring, 12...regulator, 12a, 12b...
...Abutment part, 13...Pressure spring plate, 14, 16, 2
1, 45, 48...Pin, 15...Rotating piece, 15
a, 31b...Lever part, 15b...Convex part, 23
...Cam plate, 23c...Rack, 24...V-shaped cam part, 25...Core, 26...Coil, 28...
Clutch lever plate, 28a... protrusion, 29,3
1a...cam hole, 29a...recess, 29c...straight edge, 30...frame top plate, 31...band switching lever plate, 32...clutch mechanism section, 34...
Arm, 35...Drum, 35b, 43b...Pinion, 41...Roller, 41c, 42e...Universal joint portion, 42...Intermediate shaft, 43...Ondam joint shaft.

Claims (1)

[Scope of utility model registration request] A push button plate provided with a deterrent cam member and a sliding plate having a regulator and a deterrent spring member and attached to the push button plate in a limited slidable manner are slid substantially integrally in a predetermined direction when memorizing a channel selection. After contacting a predetermined memorized member, the restraining cam member further slides relative to the sliding plate to restrain the regulator via the restraining spring member, and at the same time displaces the predetermined clutch member in an interlocking manner to store the memorized member. In a push button tuner configured to disconnect the storage member and the manual tuning part, the restraining part includes a predetermined rotating piece pivoted on one of the inhibiting cam member and the sliding member, and a regulating part provided on the other; At least the push button member is provided so as to be able to interlock with each other, and after the regulating member, which has been regulated and displaced by the memorized member when the push button member is pressed and the memorized channel selection is started to be restrained and semi-fixed, the regulating portion causes the regulating portion to regulated displacement. The push-button tuner is configured such that the rotating piece presses against the clutch member and displaces it in the connection/disconnection direction.