JPS6216574B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The invention of this application relates to a clutch mechanism for a manual tuning device in a push-button tuner. More specifically, it relates to the structure of a clutch mechanism including a spur gear and a rolling plate.

Recently, integration of tape recorder and push-button tuner,
In other words, research has been carried out on configurations in which a tape recorder is attached to the top or bottom of a push-button tuner. Such a combination mechanism requires a thin push-button tuner.

The outline of the structure of a conventional thin push-button tuner is as follows. (Refer to Japanese Patent Application Laid-open No. 54-63602). A frequency regulation plate with multiple dowels protruding from the top surface of the flat push button members that are slidably attached between the front and rear plates of the push button tuner can be set at any angle. provided between the front plate and the rear plate and two side plates perpendicular to each other, so that either one of the cam parts comes into contact with one of the dowels of the frequency regulating plate, so that the frequency regulating plate can be moved in opposite directions. Two lateral movement plates are provided, and the displacement of the lateral movement plates is converted into the back and forth movement of the core support plate through a separately provided T-shaped rotation member, so that the core can move in and out of the coil. By moving the push button member back and forth, the clutch transverse movement plate fitted into the two side plates is displaced, and the lever plate of the clutch mechanism mounted on the device frame is moved up and down to open and close the clutch. Further, the T-shaped rotating member is configured to be rotatable integrally with a rotating shaft that fits into a spur gear constituting the clutch mechanism, and the spur gear is connected to a manual adjustment shaft of a manual tuning device. When the worm gears are in mesh and the clutch is closed, if the knob on the adjusting shaft of the manual synchronizer is operated to rotate the spur gear via the worm gear, this rotational action will be applied to the clutch provided in contact with the spur gear. The transmission is transmitted through the lever support, the disk that presses the lever into the clutch lever support, and the rotating shaft that fits into the spur gear, and then to the T-shaped rotating member, and these members make a series of movements, and the core support plate and the transverse movement plate can be set at arbitrary positions.

The shape of the push-button tuner mentioned above was made thin, and the desired purpose could be achieved. However, this type of push button device has drawbacks such as a complicated structure, a large number of component parts, and a complicated manufacturing process. In particular, the parts that make up the clutch mechanism are complex and require many manufacturing steps.

Therefore, the invention of this application was devised to overcome the above-mentioned defects, and aims to reduce the number of component parts of a clutch mechanism and provide a highly accurate configuration.

To summarize, when the clutch is closed, by operating the adjustment shaft of the manual synchronization device, a driven shaft equipped with a worm gear that meshes with the spur gear rotates, and the spur gear is rotated through the worm gear. In push-button type tuners, the rolling plate also rotates, and the core support body and the horizontal movement plate, which are provided on the side plate of the machine frame and can be moved laterally, can be set to any position. A driven shaft including a worm gear that can mesh with the gear is displaceably provided, and the inner part of the spur gear is configured to be pressed against the outer part of the rolling plate in accordance with the displacement of the driven shaft. This is a clutch mechanism in a push-button tuner.

An embodiment of the present invention will be described below based on the accompanying drawings.

In FIG. 1 of the accompanying drawings, an arm member 6 is arranged between the front plate 2 of the container frame and the rear plate 4 of the container frame, and slides back and forth with a push button plate 8 provided in parallel and overlapping the upper surface of this arm member. Can be erected freely. A push button member 10 is provided at one end of the push button plate 8, and a coil spring 14 is wound between the stepped portion 12 at the other end and the rear plate 4 of the container frame so as to be biased in the direction of the push button member 10. be done.
Reference numeral 16 denotes a restraining member that rides on the stepped portion 18 of the push button plate 8 and restrains the frequency regulating plate 22 via the intermediate plate 20. The frequency regulating plate 22 is rotatably attached to the armrest member 6 via a protruding shaft, and has two engaging pins 2 hanging down from two holes provided in the armrest member 6.
4 is provided. The engagement pins were provided in holes 30 of a pair of lateral movement plates 28 attached to the side plate 26 of the case frame so as to be able to freely slide horizontally on the side plate 26 and perpendicular to the push button plate 8 and armrest member 6. Each of them can abut on the slope cam 32.

At the rear of the rear plate 4 of the container frame, there is a U-shaped clutch plate 34.
, the container frame side plate 2 is slidably parallel to the horizontal movement plate 28.
Install it on 6. A plurality of notches 36 corresponding to the number of push button plates 8 are formed on the upper surface of this clutch plate,
An inclined cam 38 is formed on the inside of this notch, and the protrusion 9 of the push button plate 8 can come into contact with the slope cam 38. A pair of arm portions 40 and 42 of the clutch plate 34, each having a different shape, are core support plates 9 of a variable inductance element to be described later.
The short arm portion 40 extends in the direction 2 and is slidably inserted into the standing wall portion 44 that is a part of the side plate 26 of the container frame.
The palm part 46 configured at the end of the other long arm part 42 has an end 6 of a driven shaft 62 of a manual adjustment device to be described later.
A long hole 48 into which 3 can be inserted is bored.

The protrusion 52 provided on the clutch plate long arm 42 and the container frame a
The driven shaft 62
A coil spring 54 is installed so that the end portion 63 of the clutch plate 34 contacts the oblique side of the elongated hole 48 and urges the clutch plate 34 to the left (toward FIG. 1). Also, a holder 61 is provided parallel to the clutch plate long arm 42.
The leading end of the driven shaft 62 is fitted into the elongated hole 49 provided in a portion of the shaft. As will be described later, even if the worm gear 66 of the driven shaft 62 is displaced, it is always maintained in a state of meshing with the spur gear 68 mounted around the rolling plate 70, and the elongated hole 49 is designed to prevent the above-mentioned meshing from disengaging. The longitudinal dimension is set.

Note that the long hole 4 bored in the clutch plate long arm 42
In addition to the configuration in which the driven shaft 62 is directly inserted into the lever 5, as another embodiment, the lever 5 has a V-shaped groove on one side.
1 is connected to the long arm 42, and the clutch plate 3
4 is displaced together with the long arm 42, the lever 51
A configuration in which the V-shaped groove contacts and separates from the driven shaft 62 may also be provided.

FIGS. 8 and 9 illustrate the embodiment.

A V-shaped groove is formed approximately in the center of the lever 51, one end of the lever is pivotally connected to the holder 61, and the other end is engaged with a hole 55 provided at the end of the arm 42 of the clutch plate. The sum is 55'.

In the mechanism in which the lever 51 is connected to the clutch plate 34 as described above and the position of the driven shaft 62 is indirectly moved via this lever, as already explained with reference to FIG. 42
Compared to a configuration in which the driven shaft 62 is displaced, the lever ratio is skillfully utilized, so even if a clutch spring with the same elastic force is used, the load that pulls the driven shaft increases.

In other words, since there is no problem even if the load on the clutch spring is lowered, the push button plate gets caught between the clutch plate and the frame during operation (generally known as a phenomenon called button catching).
can be prevented.

The configuration of the manual tuning device is as follows.

A manual adjustment shaft 56 equipped with a spur gear 58 at the end is mounted on the frame sleeve plate 60 and the holder 61, and this spur gear 58 is mounted on the end of a driven shaft 62 mounted on the arm 46 and the holder 61. It is configured so that it can always mesh with a spur gear 64 fixed to the section. A thrust spring 59 provided between the driven shaft 62 and the holder 61 biases the driven shaft 62 in the direction of the long arm 42 .

A worm 6 provided approximately in the center of the driven shaft 62
6 is formed so that it can always mesh with a spur gear 68 attached to the outer periphery of a rolling plate 70, which will be described later.

The rolling plate 70 forming an arc shape is composed of an upper part 76 and a lower part 78 having central shafts 72 and 74, respectively.Usually, the upper and lower members are formed by die-casting, and the central shafts 72 and 78 are press-fitted. 74 are integrated so as to constitute the same central axis (FIG. 3), but it is also possible to form one piece of plate material and attach one central axis to this. The upper center shaft 72 of the rolling plate 70 is pivotally supported by the holder 61, and the lower center shaft 7
4 is pivotally supported on the container frame a. A pair of drive pins 80 and 82 hanging down from the rolling plate lower part 78 are inserted into slits 2 provided at the ends of the horizontal moving plates 28 and 28, respectively.
9, 29. Further, the pair of drive pins 8
The rotating arm 84 is perpendicular to the line connecting 0 and 82.
extends from the rolling plate lower part 78 and reaches a core support plate 92 (described later), and the drive pin 86 protruding from the end of the rotary arm 84 is inserted into a slit groove 100 provided at the end of the core support plate 92. Fit together.

Further, a concave portion, for example a V-shaped groove 88, is formed on the outer periphery of the circular arc portion of the rolling plate 70 so as to open outward. Further, a spur gear 6 mounted on the outer periphery of the rolling plate 70
An annular convex portion, for example, an annular V-shaped portion 90 is provided to protrude from the tooth portion 69 of No. 8 toward the outer circumferential direction of the rolling plate 70 . The annular V-shaped protrusion 90 of the spur gear 68 can fit into the V-shaped groove 88 of the rolling plate 70, and a small gap c exists between the two. The spur gear 68, in which the worm 66 provided on the driven shaft 62 is constantly engaged, is rotated by the rolling plate 7 due to the displacement of the driven shaft 62.
When pressed in the 0 direction, the annular V-shaped protrusion 99 comes into contact with the V-shaped groove 88 . Therefore, when the worm gear 66 rotates in this state, the spur gear 68 also rotates, and this motion is transmitted to the rolling plate 70. When the spur gear 68 moves in the opposite direction due to the displacement of the driven shaft 62, the contact between the V-shaped groove 88 and the annular V-shaped protrusion 90 is released. In order to ensure accurate contact between the V-shaped groove 88 on the outer periphery of the arc portion of the rolling plate and the annular V-shaped convex portion 90 of the spur gear 68, the inner surface of the V-shaped groove 88 is configured to have an uneven shape. It's okay.

The core support plate 92 is formed in a U-shape, and medium cores 96, which are variable tuning elements, are installed horizontally and in parallel on an upright wall portion 94, and a slide bar drive pin 86 is attached to the end of the horizontal portion 98. A slit groove 100 is provided for receiving the core supporting plate horizontal portion 98.
A coil spring 104 is installed between the protrusion 102 provided in the core support plate and the drive pin 86 that fits into the slit groove 100 of the core support plate so as to be biased in the opposite direction to the core support plate drive pin 86. A plurality of variable inductance elements 110 are installed between the mounting substrate 106 and the standing wall portion 108 of the core support plate 92 .

Next, the operation of this invention will be explained.

When the clutch 34 is in the normal position as shown in FIG. 1 and the oblique side of the elongated hole 48 of the palm 46 of the arm 42 is in contact with the driven shaft 62 as shown in FIG. When the member 10 does not perform a pushing forward action and the clutch mechanism is in the closed state, when the manual adjustment shaft 56 is rotated, a spur gear 64 is provided that meshes with a spur gear 58 mounted on the end thereof. When the driven shaft 62 rotates, the worm 66 provided approximately at the center rotates the spur gear 68 that meshes with the worm 66, so that an annular V-shaped protrusion 90 protrudes inside the spur gear 68. V-shaped groove 88 in contact with
The rolling plate 70 also rotates about its central axes 72 and 74. As the rolling plate 70 rotates, its rotating arm 84 is displaced, and the core support plate 92, whose horizontal portion 98 engages with a drive pin 86 provided at the end of this arm, moves horizontally back and forth. Therefore, the variable tuning element 96 mounted on the wall portion 94 moves in and out of the variable inductance element 110, achieving variable inductance. Further, the transverse moving plates 28 and 28, which are engaged with drive pins 80 and 82 protruding from the bottom of the rolling plate 70 through respective slit grooves 29 and 29, mutually move in accordance with the rotation of the rolling plate 70. Move laterally in opposite directions.

Next, the transverse movement plates 28, 28 placed at arbitrary positions
On the other hand, when the push button member 10 equipped with the frequency regulating plate 22 that is not fixed and restrained by the restraining member 16 is pushed forward by the push button member 10 against the elastic force of the coil spring 14, the armrest member 6 Either one of the engaging pins 24, 24 of the frequency regulating plate 22, which is pivotally supported via a protruding shaft, first engages the hole 30 of the corresponding front or rear lateral movement plate 28, 28,
contacting one of the inclined cams 32, 32 of 30,
When the push button member 10 is further pushed forward, the engagement pin 24 comes into contact with the cam portion, and the frequency regulating plate 22 pivoted on the arm member 6 rotates, causing the frequency regulating plate 22 and the arm arm member to rotate. The forward movement of 6 is stopped when the remaining engaging pin 24 of the frequency regulating plate 22 comes into contact with the corresponding slope cam 32 of the remaining transverse moving plate.

When the push button member 10 is further pushed forward, the frequency regulating plate 2 located between the arm member 6 and the intermediate plate 20
2 is pressed against the cross arm member 6 via the intermediate plate 20 by the restraining member 16 whose one end rests on the stepped portion 18, and is restrained and fixed. When the pressing force of the push button member 10 is removed from the pressed state, the push button member returns to its original position, and from now on, by pushing the push button member forward, the pair of buttons placed in an arbitrary positional relationship can be pressed. The horizontal movement plates 28, 28 can be made to follow the rotation angle of the frequency regulation plate 22 attached to the push button member.

As described above, by pressing the push button member 10 forward,
When the frequency regulating plate 22 is restrained and fixed, or when the pair of lateral moving plates 28, 28 are held in an arbitrary positional relationship in advance, the coil spring 14
When the push button plate 8 is advanced by the push button member 10 against the elasticity of the push button plate 8, the side surface of the tip end 9 of the push button plate 8 comes into contact with the inclined cam 38 of the clutch plate 34. clutch plate 34
moves in the direction of the core support plate 92 against the elastic force of the coil spring 54, so the palm portion 46 of the long arm 42 naturally also displaces in the same direction, and the slope of the elongated hole 48 provided in the palm portion 46 and the driven Contact with shaft 62 is released. Accordingly, the pressing force of the driven shaft worm 66 against the spur gear 68 is also released, so that the clutch mechanism becomes open. As a result, the worm 6 of the driven shaft 62
6 is still in mesh with the spur gear 68, but since the contact between the V-shaped groove 88 of the rolling plate 70 and the annular V-shaped protrusion 90 of the spur gear is not maintained, the rolling plate 70 is free. It becomes a state.

On the other hand, as described above, as the push button plate 8 moves forward due to the pressing action of the push button member 10, one of the pair of hanging engagement pins 24, 24 of the frequency regulating plate 22, which is restrained by the restraining member 16 via the intermediate plate 20, moves forward. , abuts on one of the slope cams 32, 32 provided in the holes 30, 30 of the pair of lateral moving plates 28, 28, respectively, and in response to the forward movement of the push button plate 8, the pair of lateral moving plates 2
8 in opposite directions, this movement is carried out via the drive pins 80, 80 of the rolling plate 70, which are engaged with the slit grooves 29, 29 provided at the ends of the pair of lateral moving plates 28. However, since the connection between the spur gear 68 and the rolling plate 70 is interrupted as described above, the rolling plate 70 is rotated.
Only 0 rotates. As the rolling plate 70 rotates, the core support plate 92 connected thereto is displaced, and the middle core 96 moves in and out of the variable inductance element 110, thereby realizing the tuning frequency stored in the frequency regulation plate 22. You can force it.

In this embodiment, the core support plate 92 is driven in the direction in which the push button member 10 is pressed, but it may be driven in a direction perpendicular to the direction in which the push button member 10 is pressed. Further, although the driving pin 86 for driving the core support plate 92 is provided to protrude above the rotating arm 84, it may be provided to protrude below the rotating arm 84. Further, in this embodiment, a thrust spring 59 is interposed between the driven shaft 62 and the holder 61, but instead of the thrust spring, a wire rod (not shown) is used and this wire rod is provided at the base of the driven shaft 62. Tapered part (not shown)
It may be fitted into the

As mentioned above, the clutch mechanism according to the invention of this application has a simple mechanism, can perform opening/closing operations extremely smoothly, and has the advantage of improving accuracy by reducing the number of component parts, and is a state-of-the-art in this field. It is important to contribute to the improvement.

[Brief explanation of the drawing]

The accompanying drawings illustrate one embodiment of the invention. Figure 1 is a perspective view of the push button device, Figure 2 is a schematic diagram showing the interlocking relationship with the lateral movement plate, rolling plate, and core support plate, and Figure 3 is the palm of the long arm of the clutch plate in Figure 1. Detailed view of. FIG. 4 is a sectional view taken along arrow X-X' in FIG. FIG. 5 is a sectional view taken along arrow Y-Y' in FIG. FIG. 6 is a perspective view of the rolling plate. FIG. 7 is a sectional view showing a state in which the tip of the driven shaft is fitted into a long hole provided in the holder. FIG. 8 is a side view of another embodiment in which a lever is provided on the long arm of the clutch plate. Figure 9 is the 8th
A side view of the figure seen from another direction. 6... Bracelet member, 8... Push button plate, 10... Push button member, 16... Suppressing member, 20... Intermediate plate, 22
... Frequency regulation plate, 28 ... Lateral movement plate, 32 ... Slope cam, 34 ... Clutch plate, 38 ... Slope cam, 40 ... Arm section, 42 ... Arm section, 46 ... Palm section, 48 ... Long hole, 49 ... Holder long hole, 56
...manual adjustment shaft, 58 ... spur gear, 61 ... holder, 62 ... driven shaft, 64 ... spur gear, 66 ...
... Worm gear, 68 ... Spur gear, 70 ... Rolling plate, 80 ... Drive pin, 82 ... Drive pin, 84
... Rotating arm, 86 ... Drive pin, 88 ... V-shaped groove, 90 ... Annular V-shaped protrusion, 92 ... Core support plate, 96 ... Middle core, 106 ... Mounting board, 11
0...Variable inductance element.

Claims (1)

[Claims] 1. When the clutch is closed, by operating the adjustment shaft of the manual tuning device, a driven shaft equipped with a worm gear that meshes with the spur gear rotates, and the spur gear and the rolling gear are rotated through the worm gear. In a push button type tuner, the plate also rotates, and the core support plate and the horizontal movement plate, which are provided on the side plate of the container frame and can be moved laterally, can be set to any position. A push button characterized in that a driven shaft equipped with a meshable worm gear is displaceably provided, and a concave portion in which an annular convex portion provided on the spur gear can fit and be pressed is provided in an arc-shaped portion of a rolling plate. Clutch mechanism in a formula tuner. 2. A clutch mechanism in a push-button tuner according to claim 1, wherein the concave portion provided on the outer periphery of the arcuate portion of the rolling plate and the annular convex portion provided on the inside of the spur gear are each formed in a V-shape. 3. According to claim 1, the clutch plate is provided with a long arm having a long hole into which the tip of a driven shaft equipped with a worm gear is inserted, and a clutch plate that can be displaced orthogonally to the driven shaft. Clutch mechanism in push-button tuner. 4. A clutch mechanism in a push-button tuner according to claim 2, wherein the inner side of the V-shaped portion provided on the outer periphery of the arc-shaped portion of the rolling plate is formed into an uneven shape. 5 A holder equipped with a long hole into which the tip of the driven shaft is inserted is provided in contact with the long arm of the clutch plate, so that the worm gear of the driven shaft and the spur gear mounted around the rolling plate are always in mesh with each other. 2. A clutch mechanism in a push-button type tuner according to claim 1, wherein the length of the elongated hole in the longitudinal direction is set to maintain the same length.