JPS5853711Y2 - tape recorder device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a tape recorder device that is equipped with a mechanism that detects the end of a tape winding and automatically stops the recording or playback operation when the tape recorder device stops.

Conventional tape recorder apparatuses can be roughly divided into two types: those whose automatic stop function is performed electrically and those whose automatic stop function is performed mechanically.

The former, which is electrically performed, optically and electrically detects the stoppage of the reel rest, automatically stops the reel rest, and electrically discriminates between the pause state and the tape end state, and the feeding system There is no deterioration at all, and recording, playback, fast forwarding, and rewinding can all be stopped automatically.

However, as a tape recorder device, it is not only sophisticated and complicated, but also has the drawback that, in the case of a battery power source, the battery consumption is large, which drastically shortens its lifespan.

The latter, which is mechanically performed, detects the stop of the reel rest by a sudden increase in tape tension at the end of the tape, and automatically stops the reel rest mechanically. Since there is no need to distinguish between the state and the end of the tape, the structure of the tape recorder device is simple, so it can be used as a tape recorder, but it is not only difficult to automatically stop in the fast forward/rewind state, but also causes deterioration of the fragility of the feeding system. It had the disadvantage of causing

This idea was made in order to eliminate the drawbacks of the conventional ones as mentioned above. Equipped with a mechanism that can automatically stop each of the above operations by detecting the rotational state of the reel rest depending on the presence or absence of rotational force, and a pause mechanism that can mechanically distinguish between two states: stop and pause. The object of the present invention is to provide a tape recorder device that has the following characteristics.

An embodiment of this invention will be described in detail below with reference to the drawings.

Figures 1, 2, and 3 are drawings showing the mechanism of the device of this invention, respectively, where Figure 1 is a plan view, Figure 2 is an old side view,
FIG. 3 is a perspective view.

In these drawings, 1 is a reel rest, 2 is a rotary plate that connects the reel rest 1 with a friction member and a spring and constitutes a kind of friction torque generating device, 21 is a first protrusion thereof, and 22 is a rotary plate. The second protrusion 3 is the rotating plate 2
It has a 20th elongated hole 32 into which the first projection 21 of the reel rest 1 is inserted and a 10th elongated hole 31 into which the shaft 101 of the reel rest 1 is inserted, and an upper projection 33 and a lower projection 34 thereof. The first
and a first lever, 4, which is slidable along the length of the 20th elongated hole 31, 32, obtains rotational force from a motor or flywheel by an equivalent means, and rotates the reel rest 10. 5 is a gear that rotates in mesh with the pulley 4 and has a protrusion 51 at an arbitrary length from the center of rotation, and 6 is a gear. a second lever having a hole 61 into which the protrusion 51 of No. 5 is inserted and swings when the protrusion 510 rotates;
T is the engagement part that engages with the end of the second lever 6, the protrusion 71 that comes into contact with the lower protrusion 3'4 of the first lever 3, and the first protrusion 21 of the rotating plate 2 by an arbitrary amount. Cam section 7 to be moved
2, and a guide portion T that limits the rotation angle of the first lever 3.
3, and a slidable first link 8 having a hole 14 into which a fixing member for fixing the shaft of the reel rest 1 is inserted;
9 is a second link that slides only when the button is pressed during pose operation; 10 is a rotating plate provided on the second link 9; 2, an elastic body (generally an elastic mechanism) that comes into contact with and presses the second protrusion 22; 11, a third lever that rotates when pushed by the upper protrusion 33 of the first lever 3; Third lever 11
The third link 13 that slides when the third link 12 rotates is connected in parallel with the power switch of the motor, and forms a kind of delay mechanism together with the third link 11. Indicates the switches to be configured.

The operation of pressing the button on the tape recorder device configured as described above will be explained below.

4 to 8 will be explained with reference to FIG. 3.

FIG. 4 shows a swinging motion caused by the rotation of the protrusion of a gear 5 which is decelerated by a pulley 4 which is rotated by a motor or flywheel which rotates independently of the rotation of the reel rest 1, and which rotates together with the pulley 4. The first link T that slides in mesh with the end of the moving second lever 6 is located at the rightmost end (hereinafter, the first direction will be referred to as the right side and the second direction will be referred to as the left side), This shows a state in which the cam portion T2 of the first link T is blocking the first protrusion 21 of the rotating plate 2 which attempts to rotate together with the reel rest 1 with an arbitrary rotational force. Lever 3 also does not rotate.

In FIG. 5, the first link 7 is at the leftmost end (in the second direction plow), and the first protrusion 21 of the rotating plate 2 has separated from the cam part 12 of the first link T halfway. , the rotating plate 2 is rotating together with the reel rest 1, and the first lever 3 is also rotating.

These states are repeated depending on the recording or playback state of the tape recorder device, and during this period, the first
There is no contact between the lower protrusion 34 of the lever 3 and the upper protrusion γ1 of the first link 1.

Next, for example, when the end of the tape is reached in the state shown in FIG. 4, the rotation of the reel rest 1 stops, and at the same time, the rotational force that causes the rotation plate 2 to rotate from the reel rest 1 through friction torque is lost. The first link slides regardless of the stoppage of the reel rest 1, and the first link T slides to the left by the reel rest 7.
The upper protrusion T1 abuts the lower protrusion 34 of the first lever 3, and the first lever 3 slides together with the first link 1, resulting in the state shown in FIG. 6.

Also, if the tape reaches the end in the state shown in Figure 5,
By sliding the first link T to the right, the cam portion T2 of the first link T returns the first protrusion 21 of the rotating plate 2, which has already lost its rotational force, to the state shown in FIG. 4. At the same time, the tenth lever 3 returns to its original position, and then the first lever 3 slides to the state shown in FIG. 6 in the same manner as at the end of the tape in the state shown in FIG.

Immediately after the state shown in FIG. 6, the first lever 3 that slides as described above rotates the third lever 11 shown in FIGS. 2 and 3, and simultaneously slides the third link 12. By sliding the third link 12, the recording or reproduction state holding mechanism located on the extension line of the third link 12 is released, and the recording or reproduction operation of the tape recorder device is stopped.

The operation when stopping the cheap recording device in the fast-forwarding state is the same as that described above, only the rotational speed of the reel rest 1 is different.

Furthermore, the operation when stopping the tape recorder device in the rewinding state is the same as that described above, except that the rotational speed and rotational direction of the reel rest 1 are different.

Furthermore, in the above operations, the pause operation is performed but no button is pressed, and the elastic body 10 does not have any effect on the device.

On the other hand, if the rotation of the reel rest 1 is stopped because the pause operation is performed instead of reaching the end of the tape during the recording or playback state, if the first link I is at the rightmost end, Rotation that is prevented by the cam portion 72 of the first link 1 even though the elastic body 10 provided on the second link 9 pushes the second protrusion 22 of the rotation plate 2 The plate 2 does not rotate and is in the state shown in Figure 1.
Next, as the first link γ slides to the left, the rotating plate 2 has the first protrusion 21 detached from the cam portion T2 of the first link γ due to the pushing force of the elastic body 10. rotate,
The first lever 3 also rotates, resulting in the state shown in FIG. 8, and is rotated during the pose operation.

These conditions caused by the elastic body 10 are the same as the fourth condition already explained.
5, that is, in this state, the first lever 3 is not slid to the left by the first link 1 to reach the state shown in FIG. 6, and therefore the third lever 11, does not operate the switch 13 via the third link 12.

In other words, in the pause state, the tape is not automatically stopped like during recording or playback, and it is possible to distinguish between a stop at the end of the tape on the reel rest 1 and a stop due to a pause operation.

Further, when the operation holding mechanism is released, the automatic stop is delayed by an arbitrary period of time from the time of release using the switch 13 arranged in parallel with the drive motor switch and engaged with the third link 12. The state of the tape recorder device after it is stopped is the same as the state before all operations are started.

Further, in the embodiment described above, the switch 13 connected in parallel with the drive motor switch is used in the delay mechanism, but the switch 13 can be omitted by engaging the third link 12 with the drive motor switch itself. You can also get the same effect.

As described above, according to this invention, the stoppage of the reel rest is detected by the rotating plate for detecting the stoppage of the reel rest, which rotates together with the reel rest. Since it is possible to distinguish between tape feeding stopping due to a pause operation and tape feeding stopping due to a pause operation, the apparatus can be simplified, the cost of original images can be reduced, and deterioration of the feeding system can be prevented.

[Brief explanation of drawings]

1, 2, and 3 show an embodiment of the tape recorder device according to this invention, in which FIG. 1 is a plan view, FIG. 2 is an IE view, FIG. 3 is a perspective view, and FIG. 4 to 8 are old side views showing various states of the device of this invention. Referring to the drawing, 1 is a reel rest, 2 is a rotating plate, 3 is a first lever, 4 is a pulley, 5 is a gear, 6 is a second lever, 1 is a first link, 8 is a holding base, 9 is the second link,
10 is an elastic body, 11 is a third lever, 12 is a third link, 13 is a switch, and 21 is a first provided on the rotating plate 2.
22 is a second protrusion provided on the rotating plate 2;
31 is the 10th elongated hole provided in the first lever 3, 32 is the 20th elongated hole provided in the first lever 3, 33 is the protrusion provided above the first lever 3, and 34 is the 20th elongated hole provided in the first lever 3. A protrusion 51 provided below the first lever 3 is a protrusion 6 provided at an arbitrary length eccentric position from the center of rotation of the gear 5.
1 is a hole provided on the second lever 6 into which the protrusion 51 is inserted; γ1 is a protrusion provided on the top of the first link 1; 12 is a hole cut into the inside of the first link 7; 13 is a guide part located inside the first link I, γ4
is a hole inside the first link T into which a fixing member for fixing the shaft of the reel rest 1 is inserted. The same reference numerals in each figure represent the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] a reel rest stop detection rotating plate that is driven by the rotation of the reel rest through frictional torque between it and the reel rest of the tape recorder device to detect a stop state of the reel rest; and the reel rest. a first elongated hole into which is inserted a fixing member for fixing the rotational shaft of the rotating plate; and a twentieth elongated hole into which a first protrusion provided eccentrically from the center of rotation of the rotary plate is inserted. a first lever that can rotate around the rotation wheel of the reel rest and slide along the length of the first and second elongated holes; and a first lever that drives the reel rest. a first link that is driven by a drive system that is separate from the system and performs reciprocating motion;
engages with the protrusion of the reciprocating movement, and in a first phase when the first link is near the end in the first direction, the rotation of the rotation plate is prevented, and the rotation of the rotation plate is prevented. When the link moves from the first phase in a second direction opposite to the first direction, the rotating plate and the first lever are free to rotate, and the first link moves in the second direction. a cam part that returns the rotating plate and the first lever to the first (1) phase when moving in the first direction; a guide part that limits the rotation angle of the first lever; When the first link moves in the second direction and the first lever is in the first phase position, the first link engages the first lever and moves the first lever into the second phase position. a switch device operated by sliding of the first lever in the second direction; and a second protrusion provided on the rotating plate during pause operation of the tape recorder device. A tape recorder device comprising: an elastic mechanism that applies an elastic driving torque to the rotary plate by correcting the rotational plate.