JPS6360462B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a simple recording/playback device, and in particular, the groove angle of the V-shaped groove of the governor is 60 to 90 degrees, a round belt is applied to the elastic belt, and the The brake piece is always biased by a spring in a direction away from the inner surface of the cylinder, thereby ensuring accurate speed regulating characteristics by the governor, especially when a simple recording/reproducing device is incorporated into an underwater toy. In order to prevent the governor and turntable from slipping due to the lubricating action of water, and to prevent the brake piece from sliding against the inner surface of the cylinder due to water resistance,
To enable selection of a heavy brake piece with large elastic force.

Conventionally, a turntable is supported by a center pin set upright in a casing so as to be able to move in the axial direction and also to be rotatable.
A brake piece is pivotally connected to a bracket that is pivotally supported in a cylinder provided on the side of the turntable, so that the tip of the brake piece slides into contact with the inner surface of the cylinder as the bracket rotates. There has been provided a simple recording and reproducing machine equipped with a governor, and a speed regulating mechanism in which the turntable and the governor are connected by an elastic belt and a V-shaped groove.

This conventional simple recording/playback device is used by being incorporated into ordinary dolls, stuffed animals, and other general toys, and therefore no special measures have been taken to prevent water from entering. Nakatsuta.

However, especially recently, there has been a demand for toys that can be played floating in water, such as pools and bathrooms, to be equipped with this simple recording/playback device and to have the toys make vocalizations and pronunciations. in this case,
Naturally, water may enter the machine and affect the governor and the transmission mechanism between the governor and the turntable.
It was not possible to control the speed smoothly. it is,
This is due to slips occurring between the belt and the pulley groove, water resistance, which delays the timing of the brake piece sliding into contact with the inner surface of the cylinder, and reduces the frictional force at the time of sliding contact. It turned out to be.

Naturally, such toys are sometimes used and played with in normal places, that is, places where there is no water, so the simple recorder/player built into them must also be able to withstand normal use.

The inventor found that even when using this simple recorder/player underwater, it is preferable to make the brake piece of the governor heavier than conventional ones, especially in order for the governor to operate at a certain appropriate timing. However, I also discovered that if you do this, the governor will work too hard and the turntable's rotational speed will drop dramatically during normal use, or the governor will work too quickly, making things worse.

The inventor came up with this invention in order to solve the problem when using a conventional recording/reproducing device built into a toy for playing in a water hole. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a simple recording/playback device that ensures speed regulation even when used underwater, and an object of the present invention is to provide a simple recording/playback device that prevents uneven rotation. A further object of the present invention is to provide a simple recording/playback device that can withstand both normal use and use at waterholes.

That is, the present invention has a center pin 2 vertically installed in a casing 1 as in the illustrated embodiment.
The turntable 3 is supported so as to be movable in the axial direction and also rotatable, and is supported by a bracket 5 which is pivotally supported in a cylinder 4 provided on the side of the turntable 3. A governor 7 is provided, which has a brake piece 6 pivotally mounted so that the outer end of the brake piece 6 comes into sliding contact with the inner surface of the cylinder 4 when the bracket 5 rotates.
In a simple recording/playback machine equipped with a speed regulating mechanism in which the turntable 3 and the governor 7 are connected by an elastic belt 8 and a V-shaped groove 9, the groove angle of the V-shaped groove 9 of the governor 7 is 60 to 90 degrees, a round belt is applied to the elastic belt 8, and the brake piece 6 is always urged in a direction away from the inner surface of the cylinder 4 by a spring 10. It depends.

In this invention, the groove angle of the V-shaped groove of the governor is set to 60 to 90 degrees, a round belt is applied to the belt that extends between the governor and the turntable, and the brake piece is constantly held in the cylinder by a spring. The structure is biased away from the inner surface of the body. Therefore, the belt
Even if the belt is tightly wound around the V-shaped groove of the governor, it will not dig into the groove, and the belt will not lose its smoothness when rotating and separating from the V-shaped groove. , the rotational unevenness of the turntable due to belt stretching is eliminated, and
Since the belt can be tightened firmly, uneven rotation of the turntable caused by slips is eliminated.

In addition, since the governor's brake piece can be made with a heavy weight, it is not only possible to adjust the turntable to a predetermined rotation speed even when underwater, but it is also possible to adjust it so that the turntable can be kept at a predetermined rotation speed even when underwater. Even when used at a location, the timing at which the brake piece slides into contact with the inner surface of the cylinder is adjusted by the spring to prevent excessive braking force.

As described above, according to the present invention, the simple recording/playback device does not deteriorate the playback performance of recordings even in normal use or at a water place.

Example The figure shows a constant torque spring motor M
This is a simple recording/playback device that uses a turntable 3 to drive the turntable 3.

That is, as shown in FIG. 2, a center pin 2 is provided upright within the casing 1, and
A turntable 3 is supported so as to be freely movable in the axial direction and rotatably.

In the figure, 1a is a boss that supports the center pin 3, and a cap-shaped washer 1b is placed on top of the boss to hold it.

The turntable 3 has a pulley groove 3a formed on its circumferential surface, and this pulley groove 3a has a
It is made up of the upper and lower shoulders of the groove. Then, on this turntable 3, there is a record 3
b is placed and fixed. The turntable 3 also has a mounting sleeve 3c in its center.
are arranged via a coiled spring clutch 20. A rotating body 21 integrally equipped with a driven reel 3d is disposed inside the coil-shaped spring clutch 20, and a downwardly opened annular groove 12 is formed therein. Coiled needle pressure spring 1 from below
3 is inserted and held, and the lower end of the needle pressure spring 13 is supported on the washer 1b at the upper end of the boss 1a, thereby elastically supporting the turntable 3.

The rotating body 21 is connected to the lower surface of the turntable 3 via the spring clutch 20.
The driven reel 3d is integrated with the turntable 3 only in the direction in which it rotates for driving.
is placed.

In the figure, M is a constant torque spring motor, and the remaining end of the constant torque spring 14 is fixed to the driven reel 3d. A string take-up reel 3e is integrally formed with the rotating body 21 and the sleeve 3c above the turntable 3 of the sleeve 3c. Thus, the string take-up reel 3e closes the sleeve 3c and the rotating body 2 by the string winding operation described later.
1. It is configured to rotate together with the driven reel 3d. One end of a string 15 for winding up the motor is fixed to the string take-up reel 3e, and the other end is led out through a hole H formed in the side surface of the casing 1, and a handle (not shown) is attached to the string winding reel 3e. Connect the rings.

In addition, in the figure, 16 is a pick-up, and a regeneration needle 17 is provided protruding from the bottom surface.
It is designed so that it can be anastomosed to the recording surface of the record 3b on the turntable 3. The pickup 16 is supported by a tone arm (not shown) so as to be able to swing vertically and horizontally, and is always urged toward the playback starting point by a turn spring (not shown).

At the top inside the casing 1, there is a speaker cone 1.
8 is installed with its top facing down. A sound transmission plate 18a is provided on the top of the speaker cone 18, and the top of the pickup 16 comes into sliding contact with the lower surface of this plate. The upper surface of the top of the speaker cone 18 receives a coil spring 19 contracted between the upper back surface of the casing 1 and the entire speaker cone 18
It is supported in the direction b. The string 15 is
During the winding operation, there is tension, and the pickup 16 is supported by the sound transmission plate 18a, and the turntable 3 is moved against the stylus pressure spring 12.
It passes under the tone arm so as to be pushed and moved in a direction away from the reproduction needle 9.

Thus, during playback, the pickup 16 scans and moves between the record 3b and the sound record 18a.

A governor 7 is arranged on the side of the turntable 3 inside the casing 1. This governor 7 has a rotating shaft 22 erected in the center of the cylinder 4 that stands up integrally from the bottom of the casing 1, and the bracket 5 and The pulley 23 is fixed, and the bracket 5 is provided with pins 11, 11 at symmetrical positions about the rotating shaft 22.
Brake pieces 6, 6 are pivotally connected, and their tips are brought into sliding contact with the inner surface of the cylinder 4 by the centrifugal force of the rotation of the bracket 5.

The detailed structure of the governor 7 can be more fully understood by also referring to FIG. That is, as shown in FIG. 3, the cylinder 4 has a circular planar shape, and the bracket 5 is also formed into a so-called disk having a slightly smaller diameter. The brake pieces 6, 6 have a planar semicircular shape along the outer periphery of the bracket 5, and are disposed along the upper outer periphery of the bracket 5. These brake pieces 6, 6 are pivotally mounted on the bracket 5 at one end by the pins 11, 11. Furthermore, the outer ends of these brake pieces 6, 6 are always urged in a direction away from the inner surface of the cylinder 4 by springs 10, 10, respectively. These springs 10, 10 are thin wire springs, whose middle parts are wound around the tops of the pins 11, 11, and one end of which is attached to a protrusion 2 protruding from the upper surface of the brake pieces 6, 6.
4, and the other end is hung on a protrusion 25 protruding from the bracket 5.

Brake pads 26, 26 made of a flexible material such as felt are attached near the tips of the outer peripheral surfaces of each brake piece 6, 6. With these brake pads 26, 26, the brake piece 6,
6 comes into sliding contact with the inner surface of the cylinder 4.

As can be seen from FIG. 2, the pulley 23
is fixed to the rotating shaft 22 at the height of the turntable 3. As shown particularly clearly in FIG. 4, the pulley 23 has a V-shaped pulley groove 9, the groove angle α of which is 60 to 90 degrees. and,
The belt 8 that is stretched between the turntable 3 and the turntable 3 has a round cross section. In this way, the groove angle α of the pulley groove 9 is set to 60 to 90 degrees, and further,
By adopting a round cross section for the belt 8, even if the belt 8 is tightly stretched with sufficient strength, the belt 8 will not dig into the pulley groove 9, and therefore the belt 8 will not turn. Not only does it no longer interfere with the smooth rotation of the table 3, but the belt 8 can be firmly secured with sufficient strength, so it will not slip even in water or if it gets wet. It's gone.

In FIGS. 2 and 3, 27 is a brake piece retainer, which is integrally formed at the top of the central bracket sleeve 28 formed integrally with the bracket 5 and rotates integrally with the bracket 5. This prevents the brake piece 6 from floating up.

Due to the configuration of the governor 7 and the pulley groove 9, this simple recording/player can accurately control its speed in normal use and when used at a water place, and the governor 7 and The uneven rotation of the turntable 3 caused by the communication mechanism with the turntable 3 is also eliminated. In particular, the accuracy of speed control of the governor 7 during normal use and during underwater use is extremely good. That is, this effect will be explained as follows based on FIG. 1.

In normal use, the governor of a simple recorder/player may, for example, control the rotation of the turntable to 200 R.P.
Suppose that in order to suppress the brake force to M, a braking effect of 10 is applied, and a brake piece with a weight that has the characteristics shown by line A must be used. When using this brake in contact with water, a sufficient braking effect cannot be obtained unless the weight of the brake piece is increased compared to the normal case. In other words, B
A brake piece with a weight having the characteristics shown by the line must be used. However, as can be seen from the figure, in line B, the braking effect is 50, which is
In normal use, the braking effect is too great, and it takes too long to reach the rotational speed necessary to play a recording, making it uncomfortable. Therefore, even if a heavy brake piece is used, the brake piece must be elastically supported by some means against the centrifugal force so that the brake piece does not come into sliding contact with the inner surface of the cylinder until the number of revolutions approaches the required number. There must be. The means for supporting the brake piece against centrifugal force is the spring 10 (see FIG. 3).
When the brake piece is supported by the spring 10, the braking characteristics shown by line C in FIG. 1 are obtained. According to this, both in normal use and in underwater use,
Not only can you obtain the value of "200R.PM/10 braking effect", but the braking action occurs from near 200R.PM, so it takes a long time to obtain the necessary 200R.PM. It does not occur.

As described above, according to this embodiment, the simple recording/reproducing device has no uneven rotation even in normal use and in use at a water place.
Accurate speed control can be obtained.

[Brief explanation of drawings]

FIG. 1 is a graph for explaining the characteristics of the governor, FIG. 2 is a longitudinal sectional view of the example, and FIG. 3 is a graph for explaining the characteristics of the governor.
FIG. 4 is a plan view showing the record, governor, and belt with the upper part of the casing removed. FIG. 4 is a partially cutaway front view showing the relationship between the governor and the turntable. Center pin, 3 is turntable, 4 is cylinder, 5 is bracket, 6 is brake piece, 7 is governor,
8 is an elastic belt, 9 is a V-shaped groove, 10 is a spring, and 11 is a pin.

Claims (1)

[Claims] 1. Center pin 2 erected within casing 1
The turntable 3 is supported so as to be movable in the axial direction and also rotatable, and is supported by a bracket 5 which is pivotally supported in a cylinder 4 provided on the side of the turntable 3. A governor 7 is provided, which has a brake piece 6 pivotally mounted so that the outer end of the brake piece 6 comes into sliding contact with the inner surface of the cylinder 4 when the bracket 5 rotates.
In a simple recording/playback machine equipped with a speed regulating mechanism in which the turntable 3 and the governor 7 are connected by an elastic belt 8 and a V-shaped groove 9, the groove angle of the V-shaped groove 9 of the governor 7 is 60 to 90 degrees, a round belt is used as the elastic belt 8, and the brake piece 6 is always urged away from the inner surface of the cylinder 4 by a spring 10. 2. The bracket 5 is a disc slightly smaller than the inner diameter of the cylinder 4, and the rear end of the brake piece 6 is pivoted to a pin 11 that is set up on the disc-shaped bracket 5, so that the tip thereof is pivoted. sliding contact with the inner surface of the cylinder 4, and the spring 1
0 is wound around the pin 11 and has one end attached to the brake piece 6 and the other end attached to the bracket 5.
The structure of the simple recording/reproducing machine according to claim 1, wherein the tip of the brake piece 6 is urged away from the inner surface of the cylinder 4 by applying the force.