JPS6212955A - Record player with front loading system - Google Patents

Abstract

PURPOSE:To enable closing motion during opening motion and opening motion during closing motion by providing an operational lever and a slide switch with self locking mechanism to a moving base. CONSTITUTION:When switching from the opening motion to a closing motion during the opening motion being executed, the operational lever 11 is pushed during the opening motion, then a self locking mechanism 4a is shifted backward and is self-locked, and consequently, the direction of the current flowing through a dedicated motor 1 is reversed. Therefore, the motor 1 begins to rotate counterclockwise, and a moving base 9 starts to act the closing motion. On the contrary, when switching from the closing motion to the opening motion during the closing motion, an operational lever 11 is pushed toward the direction of arrow A. Then, the self locking mechanism 4a is shifted forward and is self- locked, and the motor 1 begins to rotate clockwise. Therefore, the moving base 9 starts an opening motion.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a record player of a 70-ton loading system, and a main table or a record storage case is attached to the record player. [A front panel that allows you to switch from an operation in which these objects are extended (hereinafter referred to as an open operation) to an operation in which they are retracted (hereinafter referred to as a close operation), or vice versa.] This invention relates to a loading type record player.

[Background of the invention]

An example of a conventional front-loading type record player is described in Japanese Patent Laid-Open No. 54-6502.

According to this conventional record player, when performing an open operation to move the spindle toward the front panel, when the loading switch is turned on, the feed motor rotates in the forward direction. As a result, when the spindle part advances a little towards the front panel, it is fixed integrally with the spindle part.
And the switch connected in parallel with the loading switch is forcibly pressed by switch (gray)K.

Therefore, even after the loading switch is turned off and the device dies, power continues to be supplied to the feed motor, and the spindle moves forward toward the front panel.

When the spindle has advanced to a predetermined position, the switch is released from the switch plate, so that the supply of power to the feed motor is stopped. Therefore, the spindle section stops and the opening operation ends. Furthermore, at this time,
Since the changeover knob provided on the changeover switch for changing the direction of the current applied to the feed motor hits the front chassis and is reversed, the changeover switch is reversed.

Next, when performing a closing operation to store the spindle section 1, when the loading switch is turned on, the feed motor rotates in the negative direction, contrary to the opening operation. As a result, when the spindle portion advances a little in the direction of storage, the switch is forcibly pressed by the switch plate, similar to the opening operation. For this reason,
Power continues to be supplied to the feed motor even after the loading switch is turned off, and the closing operation of the spindle section continues. When the spindle part is retracted to the center position of the tar/table, the switch is released from the switch plate and the supply of power to the feed motor is stopped. Therefore, the spindle section stops and the closing operation ends. At this time, the changeover knob provided on the changeover switch is pressed by the boss attached to the sub-plate, so the changeover switch is reversed.

As described above, the conventional 70-note loading type record player can perform an open operation or a close operation simply by turning on the loading switch.

However, as is clear from the above explanation, this conventional record player cannot move from an open operation to a close operation, or from a close operation to an open operation, until after the open operation or the close operation is completely completed. There was a drawback.

[Purpose of the invention]

An object of the present invention is to eliminate the drawbacks of the prior art described above, and to be able to switch to a close operation during an open operation.
Another object of the present invention is to provide a record player that can switch to an open operation during a close operation. Another objective is to realize these functions using inexpensive means.

[Summary of the invention]

The present invention provides a front-loading type record player having a fixed base and a movable base slidably supported on the fixed base, in which the movable base includes:
An operation knob and a slide switch with a self-locking mechanism operated by the operation knob and having a function of switching the direction of the current applied to the motor are provided, and the slide switch is operated to close during an open operation or to open during a close operation. It is characterized by the fact that it is possible to do this, and that it is made possible by an inexpensive mechanism.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

First, the function of the slide switch used in the present invention will be explained.

As shown in FIGS. 1 to 3, a slide switch 4 for switching the direction of current is connected to a dedicated motor 1 which is a power source of 70 kW. This slide switch 4 has four contacts A, B, C, and D, and contacts C and D are connected to a dedicated motor 9. On the other hand, contact A
is connected to the negative side of the power source 3 via the microswitch 2, and the contact B is connected to the positive side of the power source 3.

Now, in this circuit, when the microswitch 2 is open as shown in FIG. 1, the dedicated motor IK is not connected to l#3, and the dedicated motor 1 does not rotate.

On the other hand, as shown in FIG. 2, when the microswitch 2 is closed and the contacts λD and CB of the slide switch 4 are connected, the dedicated Tanabata 1 rotates clockwise.

Further, as shown in FIG. 3, when the contacts AC and BD are connected, the dedicated motor 1 rotates counterclockwise.

This slide switch 4 has a self-locking mechanism 4a (see FIG. 4), and each time the operating knob attached to the switch is turned on, the connection from the connection shown in FIG.
It has a function of switching to the connection shown in the figure, or from the connection shown in FIG. 3 to the connection shown in FIG. 2.

The slide switch 4 may be a commercially available switch (
For example, Alps Electric Co., Ltd.'s power switch r SD
W5ERIESJ) can be used.

Next, one embodiment of the present invention using the above-mentioned electric circuit will be specifically described. FIG. 44 is a conceptual diagram of a part of the record player of the present invention, and is a diagram for explaining the configuration of the electrical system.

A movable base 9 that can be moved in and out is placed on the fixed base of the box body 20. A front panel 21 is provided on the front side of the movable base 9, and the front panel 21 includes:
An operating knob 11 for operating the slide switch 4, self-locking structure 4a, and lever 12 is attached.

Contacts A and H of the slide switch 4 fixed on the movable base 9 are connected to electric wires 22j, one terminal of which is connected to a power source (not shown). and 23 are connected. Further, contacts C and D of the slide switch 4 are connected to the microswitch 2 and the dedicated motor IK, and the microswitch 2 is further connected to the dedicated motor 1.

When the movable base 9 is closed, the self-locking mechanism 4a is moved backward (as shown in FIG. 4).
When the operation knob 11 is locked in the direction of the arrow
The lever 12 operated by the lever 12 receives a counterclockwise rotational force from the spring 13 on one side of its fulcrum, and is biased in the same direction. This counterclockwise rotational force is offset by bringing the other side of the fulcrum of the lever 12 into contact with a protrusion 5b formed on the fixed base of the box body 20. Therefore, the other end of the lever 12 presses the key top portion 21 of the microswitch 2, and the microphone switch 2 is in the off state 11.

That is, the above ′! The electrical circuit shown in diagram Is1 is formed.

One end of the link 15 is connected to one end of the lever 12 .

FIG. 5 is a plan view showing the main parts of the mechanical structure in the closed state, and the same reference numerals as in FIG. 4 indicate the same parts.

The moving base 9 has 211 a-tsu 14a e 14b, and these +2-714a, 14b are one body 20 f) fd
9i Two rails 5m, 5 installed on H-x5
i is supported on b. On the other hand, the rows 14e and 14d are fixed on the fixed base 5.
D, two rails 5 formed on the back side of the moving base 9
c, 5d, and are supported by cough rollers 14 (+n and 14d).

Further, a dedicated motor 11 and a gear 8 are rotatably held on the fixed base 5.

Then, the power of the dedicated motor 1 is transmitted to the pulley 7 via the belt 6, and further transmitted to the gear 8. This gear 8 meshes with a rack 10 fixedly formed on a moving base 9, so when the gear 8 rotates, this force is transmitted to the rack 10, and the moving base 9 moves in the direction of rotation of the dedicated motor 1. Move back and forth depending on.

Now, when moving from the closed state shown in Figure 'J4y5 to the open operation, the operating knob 11 is pressed in the direction of the arrow. Then, the self-locking mechanism 4a is self-locked forward (in the opposite direction from the arrow), and ys
As shown in FIG. 6, the lever 12 opens the key top portion 2& of the microswitch 2 by the force of the spring 13, and the microswitch 2 is turned on. For this reason,
A current flows through the dedicated motor 1, and the dedicated motor 1 starts rotating. At the same time, the circuit is connected as shown in Figure 2.

When the electric circuit is connected to the chain shown in Fig. 2, the dedicated motor 1
rotates clockwise, and the rotational force of the dedicated motor 1 is transmitted to the rack L10 of the movable base 9 explained in FIG. Therefore, the movable bar 29 moves forward and the opening operation is started.

The opening operation continues, and the moving base 9 moves to the seventh
When the final position shown in the figure is reached, the link 15 connected to the lever 12 is fully extended, as shown in FIG. 5c. Therefore, the lever 12 receives a force in the direction of arrow B from the link 15, and rotates clockwise.

Then, the end of the lever 120 on the microswitch 2 side or the key top portion 2a of the microswitch 2 is pressed, and the microswitch 2 is turned off. With this, electricity @
Lol! becomes as shown in FIG. 1, the movement of the movable base 9 is stopped, and the opening operation is completed.

Next, when entering the closing operation from the open operation,
The operating knob 11 in the state shown in FIG. 8 is pushed in the direction of arrow A. Then, the self-locking mechanism 4a is self-locked rearward (in the direction of the arrow), and the key top portion 21 of the micro switch 2 is released from the pressure of the lever 12 and turned on, as shown in FIG. , and the slide switch 4 is a connected MVC shown in FIG. Therefore, the dedicated motor 1 rotates counterclockwise, and the moving base 9 moves backward. That is, a closing operation is performed.

When the moving base 9 moves backward to the state shown in FIG. 5, as shown in FIG. (in the direction of arrow C), and the key top portion 21 of the microswitch 2 is pressed.As a result, the microswitch 2 is turned off, the rotation of the dedicated motor 1 is stopped, and the movement of the moving base 9 is stopped. do.

Next, when switching from the open operation to the close operation during the 1-open operation, when the operation knob 11 is pressed during the open operation, the self-locking mechanism 4m self-locks backward, and the slide switch 4 The connection state of
When moving from the state shown in the figure to the state shown in FIG. 3, the direction of the current flowing through the dedicated motor 1 is reversed. As a result, the dedicated motor 1 begins to rotate counterclockwise, and the movable base 9 begins to perform a closing operation.

Conversely, when switching from a close operation to an open operation during one clock operation, the operating knob 11 is pressed in the direction of the arrow during the close operation. As a result, the self-locking device 154m self-locks forward, the connection state of the slide switch 4 changes from the state shown in FIG. 3 to the state shown in FIG. 2, and the dedicated motor 1 begins to rotate clockwise. Therefore, the moving base 9 starts an opening operation.

〔Effect of the invention〕

According to the present invention, in a front-loading type record player, there is an effect that a closing operation during an opening operation and an opening operation during a closing operation can be performed only by button operations.

In addition, the mechanism for performing such operations can be realized using an electric circuit (circuit using slide switches and microswitches), levers, and springs, which is 1/1/2 of the conventional electronic method.
This can be realized at a manufacturing cost of 3 or less. Therefore, the 70/drawing player can be combined with a radio-cassette player or other low-cost set, and the radio-cassette player and other low-cost products can be made multi-functional.

[Brief explanation of the drawing]

FIGS. 1, 2, and 3 are circuit diagrams showing the connections of a motor and switches for opening and closing the front-loading system according to the present invention, and FIG. 4 is an embodiment of the present invention. Fig. 5 is a plan view of the record player in the closed state, Fig. 6 is an explanatory diagram of the operation of the switch mechanism when moving from the closed state to the open operation, and Fig. 7 is the open state. FIG. 8 is an explanatory diagram of the operation of the switch mechanism when the record player is in the open state, and FIG. 9 is an explanatory diagram of the operation of the switch mechanism when the switch mechanism moves from the open state to the close operation. l...Dedicated motor, 2...Micro switch, 3.
...DC power supply, 4...Slide switch, 4a...
Self-fulfilling mechanism, 5...Fixed base, 5m...Fixed base rail, 5b, 5c...Fixed base protrusion, 9...Moveable base, 10...Rack, 11...
Operation knob, 12... Lever, 13... Spring, 14... Roller, 15... Link Patent Attorney Michihito Hiraki Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] (1) In a front-loading type record player having a fixed base and a movable base slidably supported on the fixed base, a motor that supplies driving force to cause the movable base to perform an open or close operation; It is equipped with an operating knob attached to the movable base and a slide switch with a self-locking mechanism that is operated by the operating knob and has a function of switching the direction of the current applied to the motor, and the slide switch is operated by the operating knob and has a self-locking mechanism that switches the direction of the current applied to the motor. A front-loading type record player characterized in that an opening operation can be performed during a closing operation.