JPS6364818B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an operation switching device for a tape recorder.

Conventionally, tape recorders using solenoids have been operated in such a way that they are turned off to stop the operation, and turned on to operate, and current constantly flows during operation, resulting in a significant waste of power.

Further, in FIG. 1 showing the operation switching device for intermittent use, numeral 1 is a movable member connected to a head board (not shown) provided with a recording/reproducing head or an erasing head. 2 is a first release member; 3 is a cam gear; 3a is a locking pin installed on the cam gear 3;
b is a cam, and 10 is a solenoid. Then, when the movable member 1 moves the first release member 2 backward via the solenoid 10, the cam gear 3 is released from the locking pin 3a, is driven by the flywheel gear 4a, and pushes up the pin 13 via the cam 3b. The movable member 1 is moved in the direction of the arrow, and the locking portion 1c is locked with the locking piece 7a of the second release member 7. Further, when the second release member 7 is moved backward by the solenoid 10, the locking portion 1c is disengaged from the locking piece 7a, and the movable member 1 is displaced in the direction opposite to the direction of the arrow. The structure shown in FIG. 1 requires a solenoid 10 for each operation and stop operation, which requires a large number of expensive parts, and also has the drawback of requiring a large amount of space in a small tape recorder.

The present invention has been made in view of the above situation, and an object of the present invention is to provide an operation switching device for a tape recorder that can operate a recording or playback release member or a stop release member with a single solenoid, and can reduce the number of parts. This is what I did.

The operation switching device for a tape recorder of the present invention includes a movable member that is driven to move to a stop position and a recording or playback position, a first release member that releases the stopped state of the movable member driven by a solenoid, and a first release member that releases the stopped state of the movable member driven by a solenoid, and a first release member that releases the stopped state of the movable member driven by a solenoid. a second release member to be released, the second release member being attached to the movable member so as to be slidable in a direction perpendicular to the direction in which the movable member is driven to move via the cam, and in a direction perpendicular to the moving direction of the movable member. a selection member formed to be driven via the solenoid, a solenoid configured to drive the first and second release members via the selection member and the switching member, and a selection member formed to be driven by the selection member in the same direction as the perpendicular direction. a first release member that is slidably attached to the selection member and urged to be in a neutral position with respect to the selection member via a spring, and when the movable member is in the stop position when the selection member is moved; and the above-mentioned switching member having a drive section that drives only the second release member when in the recording or playback position.

Hereinafter, an embodiment of the operation switching device for a tape recorder according to the present invention will be described with reference to FIGS. 2 to 4, with the same parts as those in the prior art designated by the same reference numerals and the explanation of the structure of the same parts omitted. Figure 2 is a front view of the stopped state, Figure 2 is an explanatory diagram of the state during the transition from the state of Figure 1 to the recording or playback state, and Figure 3 is after the transition from the state of Figure 2 to the recording or playback state. FIG. In FIG. 2, 5 is a locking member, and 6 is a lock release member, which is attached to the locking member 5 so as to be rotatable around a fulcrum 6a, and to the board so as to be rotatable around a fulcrum 8b. A pin 8c on the member 8 restricts the engaging portion 6b to a position where it does not come into contact with the flywheel pin 4b during rotation of the flywheel gear 4a. When the second release member 7 is driven rightward, the direction change member 8 is rotated counterclockwise about the fulcrum 8b via the engagement portion 8a. Accompanying this, the lock release member 6 is rotated clockwise around the fulcrum 6a by the pin 8c, and the engaging portion 6b engages with the flywheel pin 4b, moving the lock release member 6 to the left. In this way, the locking member 5 is moved leftward via the fulcrum 6a to unlock the locking portion 1a of the movable member 1.

Reference numeral 9 denotes a selection member which has two long grooves 15 in a direction perpendicular to the moving direction of the movable member 1, into which a pin 16 set on the movable member 1 is loosely fitted. Sometimes they are moved simultaneously, and furthermore, they are formed to be slidable in a direction perpendicular to the moving direction of the movable member 1. Reference numeral 11 denotes a switching member which is provided with two long grooves 17 in the moving direction of the movable member 1, and a pin 18 that is set up on the selection member 9 is loosely fitted into the long grooves 17. Then, the switching member 11 applies the spring 1 to the selection member 9.
2 and 12 so as to be always at an intermediate position in the direction of the long groove 17. Numeral 19 is a long groove provided in the selection member 9 in the moving direction of the movable member 1, into which the engaging portion of the solenoid 10 is loosely fitted. The switching member 11 is provided with pressing portions of drive portions 11a and 11b at positions facing engagement portions 2a and 7a formed at the ends of the first release member 2 and the second release member 7, respectively, during operation. .

FIG. 2 shows a stopped state, in which the driving part 11a is facing the engaging part 2a of the first release member 2, and the driving part 11a is facing the engaging part 2a of the first release member 2.
b is located apart from the engaging portion 7a of the second release member. When the solenoid 10 is operated in this state, the selection member 9 and the switching member 11 are slidably driven to the right, and the drive portion 11a moves the first release member 2 to the right via the engagement portion 2a. Therefore, the locking pin 3a of the cam gear 3 is released, and the cam gear 3 engages with the flywheel gear 4a and starts rotating, causing the cam 3b to move the movable member 1 upward via the pin 13, and the locking member 5 The locking portion 1a is locked and the recording or playback state shown in FIG. 4 is entered. At this time, if the solenoid 10 does not return even if the movable member 1 starts to move as shown in FIG.
1 is locked by the locking portion 7a, only the movable member 1 and the selection member 9 move, and after the solenoid 10 returns, it returns to the neutral position by the tension of the spring 12, resulting in the state shown in FIG. There is. In this state, the driving part 11a is removed from the position facing the engaging part 2a, and the driving part 11b is in the position facing the engaging part 7a.

Solenoid 10 in the recording or playback state shown in Figure 4.
When operated, the selection member 9 and the switching member 11 slide to the right, and the second release member 7 is moved to the right via the pressing portion 11b. Therefore, the direction change member 8 is rotated counterclockwise via the engagement portion 8a in FIG. 2, the lock release member 6 is rotated clockwise via the pin 8c, and the engagement portion 6b is It engages with the flywheel pin 4b rotating in the direction of the arrow in the figure, moves the locking member 5 to the left, unlocks the locking portion 1a, and returns the movable member 1 to the stopped position. At this time, if the solenoid 10 does not return, the switching member 11 remains locked to the engaging portion 2a, only the movable member 1 and the selection member 9 return to the stop position, and after the solenoid 10 returns, the spring 12 It then returns to its neutral position and becomes the state shown in FIG. At this time,
If the selection member 9 and the switching member 11 are rigidly connected, the switching member 11 is connected to the engaging portion 2a.
or 7a, thereby causing the movable member 1
In this embodiment, they are connected elastically, since further movement of the two is impossible.

In this way, the tape recorder operation switching device of this embodiment uses a single solenoid intermittently only for tightening, and assumes that the main operation is driven by motor power.
You can stop and switch between recording and playback, so
The number of expensive solenoid parts can be reduced, and
Compared to the always-on type, which requires a large amount of power at all times during use, it requires no power at all after switching, resulting in significant energy savings.

As described above, the tape recorder operation switching device of the present invention has the effect of being able to operate the recording or playback release member or the stop release member with a single solenoid, thereby reducing the number of parts.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a conventional tape recorder operation switching device, Fig. 2 is a front view of an embodiment of the tape recorder operation switching device of the present invention in a stopped state, and Fig. 3 is a recording from the state shown in Fig. 2. FIG. 4 is a front view after the state shown in FIG. 3 is changed to the recording or reproducing state. 1...Movable member, 2...First release member, 3b...
...cam, 7... second release member, 9... selection member,
10...Solenoid, 11...Switching member, 11
a, 11b...driver, 12...spring.

Claims (1)

[Claims] 1 Operation switching of a tape recorder having a movable member that is driven to move to a stop position and a recording or playback position, a first release member that releases the stop state of the movable member, and a second release member that releases the recording or playback state. In the apparatus, a selection member attached to the movable member so as to be slidable in a direction different from the direction of the movable member, a solenoid that drives the selection member in a direction in which the selection member is slidable, and a The movable member is attached so as to be slidable in the same direction as the moving direction of the movable member and biased to be in a neutral position with respect to the selection member via a spring, and the movable member is in the stop position when the selection member is moved. 1. An operation switching device for a tape recorder, comprising: a switching member having a driving section that drives only the first release member when in the recording or playback position and drives only the second release member when in the recording or playback position.