JPS6098551A - Driving device of reel shaft of reciprocating type tape recorder - Google Patents

Abstract

PURPOSE:To simplify the constitution of the titled device without using two slip means by executing the driving of the 1st reel shaft winding a magnetic tape in the 1st direction and the 2nd reel shaft winding the tape in the 2nd reverse direction only by the rotation of one main driving gear, transmitting the rotation of a motor to the main driving gear at a slow speed through a slip means at the reproducing operation, and at the rapid traverse operation, transmitting the rotation of the motor to the main driving gear at a fast speed without passing through the slip means. CONSTITUTION:When the tape recorder is under the stopped status, a rotary arm 6 is located on a fast driving position and a switching lever 31 to be operated by a rapid traversing operation knob 4 is located on a stop position. If the operator operates the reproducing operation knob 3 under said status, the rotary arm 6 is displaced up to the reproducing driving position and the switching lever 31 is turned to the 1st position. Since the rotation of the motor is transmitted to the 1st reel shaft 25, the reproducing operation in the 1st direction is attained. The reproducing operation in the 2nd direction is executed by displacing the operation knob 4 up to the 2nd position shown by the mark when the tape recorder is in the reproducing operation in the 1st direction.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a reciprocating tape recorder having a playback function in a first direction and a playback function in a second direction opposite to the first direction. , particularly regarding the reel shaft drive device.

(b) Prior Art Recently, an audio device called a hendophone stereo, in which the reproduced sound of a magnetic tape is listened to by a hendophone, has become popular. The tape recorder incorporated in such an audio device is a reciprocating tape recorder that has not only a playback function in a first direction but also a playback function in a second direction opposite to the first direction so that playback operation can be performed for a long time. type tape recorders are common. The drive of the reel shaft during playback in a general tape recorder is configured to transmit the rotation of the electric motor to the reel shaft via a slip mechanism, so a reciprocating tape recorder must be equipped with two slip mechanisms. , there is a problem that the configuration becomes complicated.

(c) Object of the Invention The present invention aims to provide a reel shaft drive device that has a simple configuration and is suitable for a reciprocating tape recorder.

B) Structure of the Invention The present invention provides a reciprocating tape recorder having a playback function in a first direction and a playback function in a second direction opposite to the first direction, in which a magnetic tape is wound in a first direction. The rotation of the first reel shaft, the second reel shaft that winds the magnetic tape in the second direction, and the special electric motor for playback operation is transmitted at low speed through a slip mechanism, and the rotation of the electric motor during fast forward operation also transmits the rotation of the electric motor to the slip mechanism. A main drive gear that transmits data at high speed without intervening, a rotating plate that can be displaced to a first operating position and a second operating position by operating a fast-forward operation knob, and a rotating plate that is rotatably mounted on the rotating plate. a first transmission gear that meshes with the main drive gear and transmits rotation of the main drive gear to the first reel shaft when the rotation plate is in a first operating position; a second transmission gear that is rotatably mounted and meshes with the main drive gear when the rotating plate is in the second operating position and transmits rotation of the main drive gear to the 217-wheel shaft; has been done.

(E) The embodiment drawings all relate to the present invention; FIG. 1 is an external perspective view of a tape recorder according to the present invention, FIGS. 2 and 3 are plan views showing different states of the drive mechanism, and FIG. 4 5 is a side view of a main part of the drive mechanism, and FIGS. 5, 6, and 7 are plan views showing different states of the transmission mechanism. In Figure 1,
(1) is a main body of a chief recorder, and a cassette mounting part (2) into which a cassette tape is mounted is provided on the bottom surface. (3) is a playback operation knob provided on the front surface of the tape recorder main body (Figure 1), and (4) is a fast forward operation knob, which is the first position for fast forwarding in the first direction and the stop position. Then, it is configured to be displaced to a second position where rapid forwarding in the second direction is performed. (5) is a stop operation knob that is operated when the tape recorder is in an operating state and stops the tape recorder.

Although the operating system according to the present invention is constructed as described above, the drive system will now be explained with reference to FIGS. 2, 3, and 4. In the figure, (6) is a rotating arm rotatably mounted on a fixed base plate (not shown) by a shaft (7) and normally in the high speed drive position shown in FIG. It is constructed so that when the operating knob (3) is operated, the regeneration drive position shown in FIG. 3 is displaced. (8) is rotatably attached to the shaft (7) to which the rotating arm (6) is attached, and the electric motor (
A drive gear (9) to which the rotation of the drive gear (not shown) is transmitted is rotatably mounted on the rotating arm (6) by a shaft (2) and always meshes with the drive gear (8). This is a high-speed drive gear in a state where the regeneration drive gear (b) is integrally formed. (b) is a mounting board fixed to the fixed board by screws (2) and α rotation (16);
(to) is a first drive which is rotatably attached to the mounting board (2) by an axis aη and meshes with the regeneration drive gear (6) when the rotation arm (6) is in the regeneration drive position. A second gear is rotatably attached to the shaft αη, and the rotation of the first drive gear Q6 is transmitted through a felt shaft constituting a slip mechanism.
The drive gear (A) is a main drive gear mounted on the shaft Q'h so as to rotate integrally with the second drive gear (G).

Qη is a third drive rotatably attached to the mounting board (2) by a shaft (C) and meshes with the high-speed drive gear (9) when the rotating arm (6) is in the high-speed drive position. The gear (E) is attached to the shaft (C) on the mounting board (2).
The second drive gear (G) and the third drive gear 6! The fourth drive gear is in an OK meshed state, and has the function of transmitting the rotation of the third drive gear Qυ to the second drive gear (G). The drive system is configured in this way, and in the regenerative operation state, the rotation of the electric motor is from the drive gear (8) to the high-speed drive gear (
9) - Regeneration drive gear Uυ - First drive gear (2) - Felt θ - Transmitted to the main drive gear via the second drive gear. In addition, in the fast-forward operation state, the rotation of the electric motor is from the drive gear (8) to the high-speed drive gear (9) to the third drive gear Q.
0-Fourth drive gear--The main drive gear is transmitted via the second drive gear (G).

Although the drive system according to the present invention is constructed as described above, the transmission system will be explained next with reference to FIGS. 5, 6, and 7. (c) is the 117th wheel shaft which is rotationally driven during playback operation and fast forward operation in the m1 direction, and is rotatably attached to the fixed substrate by the shaft (e), and a gear wheel is formed. There is.

(E) is a second reel shaft which is rotatably driven during playback and fast forwarding operations in a second direction, which is the opposite direction to the first direction, and is rotatably mounted on a fixed base plate by a shaft and geared. (1) is formed.

01) is a switching lever that is rotatably attached to the fixed board by an axis), and is connected to the fast forward operation knob (4).
), it is displaced to a first position for performing rapid forwarding in the first direction, a stop position, and a second position for performing rapid forwarding in the second direction. The ring is a rotating plate that is rotatably attached to the shaft (4) on which the first reel shaft is attached, and the engagement portion (B) formed on the switching lever 01). An engagement piece (to) that engages with is formed.

In such a configuration, when the switching lever C1,) is moved from the stop position shown in FIG. 5 to the first position shown in FIG. When the rotating plate (to) is displaced to the first operating position and is displaced to the second position shown in FIG. It is attached. (2) is an intermediate gear which is rotatably attached to the fixed base plate by a shaft (B), and is meshed with the gear C1)K formed on the 217th-L shaft (C). (2) is a first transmission gear which is rotatably mounted on the rotary plate (G) by a shaft and meshed with a gear formed on the first reel shaft; and is configured to mesh with the main drive gear (e) when the rotary plate (to) is in the first operating position. 2) is a second transmission gear rotatably mounted on the rotary plate (to) by an axis θυ, and when the rotary plate (to) is in the second operating position, the main drive gear and It is configured to mesh with the intermediate gear (to).

As described above, the operating system, drive system, and transmission system according to the present invention are configured, but when the regeneration operation heir (3) is operated from the stopped state, the switching lever C11) is rotationally displaced from the stopped position to the first position. It is configured so that Further, the switching lever 0η is configured to be locked and held in the first position, the stop position, and the second position by a click mechanism or the like, and is displaced to each position by operating the fast-forwarding operation heir (4). It is configured so that When the regeneration operation knob (3) is in the operating position, even if the fast forward operation knob (4) is operated, the regeneration operation knob (3)
) is not returned to the non-operating position. Further, if the stop operation is performed after each operating state, the reproduction operation knob (3) is returned to the non-operating position, and the fast forward operation knob (4) is returned to the stop position.

The present invention is constructed as described above, and its operation will be explained next. When the tape recorder is in a stopped state, the rotating arm (6) is in the high-speed drive position shown in FIG. 2, and the switching lever 0 is operated by the fast-forward operation knob (4).
) is in the stop position shown in FIG. In this state, when the user operates the regeneration operation knob (3), the rotating arm (6) is moved to the regeneration drive position as shown in FIG. Show 1-da 1
It is rotationally displaced to the position. Further, with such a reproducing operation, the magnetic head comes into contact with the magnetic tape, the pinch roller is pressed against the capstan, and power is supplied to the electric motor. The regeneration operation is configured in this way, but the rotation from the electric motor is from the drive gear (8) to the high-speed drive gear (
9) - Regeneration drive gear θB - first drive gear H - felt a - second drive gear θ frame is transmitted to the main drive gear - and the main drive gear - is rotated at low speed in the direction of the arrow . When the switching lever 01) is rotated to the first position, the main drive gear (E) and the first transmission gear (To) are in mesh, so that the cough main drive gear (E) is in a state of engagement. The rotation is transmitted to the gear via the first transmission gear (to), that is, the first
It is transmitted to the reel axis (E). In this way, the rotation of the electric motor is transmitted to the first reel shaft (a), resulting in a reproducing operation in the first direction. When the playback operation is in the first direction, the switching lever 0]) is in the first position, so the fast forward operation knob (4) attached to the switching lever C11) is in the position of the tape recorder main body (1). ) is located on the front side of the symbol.

Therefore, the user can recognize that the playback operation in the first direction is being performed because the fast-forward operation knob (4) is located on the symbol (5) side. In this way, the reproducing operation is performed in the first direction, but then
The reproduction operation in the second direction, which is the opposite direction, will be explained. Such a reproducing operation in the second direction is performed by displacing the fast-forward operation heir (4) to the second position indicated by symbol Q31 when the tape recorder is in the reproducing operation state in the first direction. Fast forward operation knob (4
) (when moved to the Bl side, the switching lever 0]) is rotated counterclockwise about the shaft 62, resulting in the state shown in FIG. When the switching lever OD is in the second position shown in FIG. 7, the second transmission gear member mounted on the rotating plate (c) meshes with the main drive gear (e) and the intermediate gear (to). is in a state of Therefore, the main drive gear -
The rotation is transmitted to the gear (2), that is, the 217th gear shaft (A), via the second transmission gear (1) and the intermediate gear (2). As a result of the rotation of the electric motor being transmitted to the second reel shaft in this way, a reproducing operation is performed in the second direction, but it goes without saying that the magnetic head and pinch roller are also switched to the opposite side at the same time. do not have. When in the state of playback operation in the second direction, the fast-forward operation knob (4) attached to the switching lever 0]) is positioned on the symbol fBl side, so the user cannot move the button in the second direction. It can be recognized that the playback operation is being performed. In this way, when the reproduction operation is being performed in the first direction, the operation of switching the reproduction direction to the second direction is performed, but the operation of switching the reproduction direction from the second direction to the first direction is also performed in the same manner. Therefore, its explanation will be omitted. Also, when the tape recorder is in the playback state in the first direction or the second direction, the stop operation knob (
5), the playback operation knob (3) is returned to the non-operating position and the fast forward operation knob (4) is moved to the fifth position.
It is returned to the stop position as shown in the figure.

As described above, when the playback operation knob (3) is in the operating position, when the fast forward operation knob (4) is moved to the first and second positions, the tape recorder starts playing in the first and second directions. Although it is in the operating state, when the rapid-forward operation heir (4) is placed in the stop position, both the first transmission gear (to) and the second transmission gear (towards the main drive gear) as shown in FIG. ) become more spaced apart. Therefore, the main drive gear (a)
The rotation of the tape recorder is not transmitted to the first reel shaft (c) and the second reel shaft @, and in such a state, if the pinch roller is separated from the capstan, the tape recorder can be brought into a paused state. I can do it. If the fast-forward operating knob (4) is moved to the first or second position during such a paused state, the playback operation in the first or second direction can be started again.

The reproduction operation is performed as described above, but the fast-forward operation will be explained next. Such a fast-forwarding operation is performed by operating the fast-forwarding operation knob (4) when the tape recorder is in a stopped state.First, the fast-forwarding operation in the first direction will be explained.

When the tape recorder is in a stopped state, when the fast-forward operating knob (4) is placed in the first position, that is, on the side marked w, the switching lever 01) is rotated to the position shown in FIG.

As a result, the rotating plate (to) has a rotational displacement of 1-1, and the first transmission gear mounted on the rotating plate (to) meshes with the main drive gear (e). In addition, in such a fast-forwarding state, the rotating arm (6) is in the high-speed drive position shown in Fig. 2, and the rotation of the electric motor is as follows: drive gear (8) - high-speed drive gear (9) - third drive gear 1 ) - transmitted to the main drive gear (E) via the fourth drive gear (18) - the second drive gear (18),
The main drive gear α is rotated at high speed in the direction of the arrow. In the first state in which the switching lever 01) is rotationally displaced to the first position, the main drive gear is connected to the first transmission gear (
Since the gears (c) are in mesh, the rotation of the main drive gear (-) is transmitted to the gear (a), that is, the first reel shaft (c), via the first transmission gear (to). As a result of the rotation of the electric motor being transmitted to the first reel shaft (c) in this manner, a fast feed operation in the first direction is performed. While the fast-forward operation in the first direction is being performed, the fast-forward operation is canceled by operating the fast-forward operation knob (4) to the stop position or by operating the stop operation knob (5). The tape recorder will stop.

As described above, the fast forward operation in the first direction is performed, but next, the fast forward operation in the second direction will be explained. The fast-forward operation in the second direction is performed by placing the fast-forward operating knob (4) in the second position, that is, on the Bl side when the tape recorder is in a stopped state. When the child (4) is displaced to the symbol fBl side, the switching lever Jl) is rotated to the position shown in Fig. 7, and as the rotary plate (Jl) is displaced, the second transmission gear (Jl) is switched to the main drive. It is in mesh with the gear (E) and intermediate gear (G). In the fast forward operation state, as described above, the rotation of the electric motor is transmitted to the main drive gear at high speed, and the rotation of the rescue drive gear (A) is transmitted via the second transmission gear (6) and the intermediate gear (A). (to the gear), that is, to the second reel shaft (c). As a result of the rotation of the electric motor being transmitted to the second reel shaft in this manner, a rapid feed operation in the second direction is performed.

or displacing the fast-forward operation knob (4) to the stop position while the fast-forward operation in the second direction is being performed;
When the stop operation knob (5) is operated, the fast-forward operation is canceled and the tape recorder is brought to a halt.

(f) Effects of the Invention The reel shaft drive device of the present invention drives a first reel shaft that winds a magnetic tape in a first direction and a second reel shaft that winds a magnetic tape in a second direction that is opposite to the first direction. Not only is the operation performed by transmitting the rotation from one main drive gear through a transmission gear, but also the rotation of the electric motor is transmitted at low speed to the main drive gear via a slip mechanism during regeneration operation, It is characterized by a structure in which the transmission is transmitted at high speed to the main drive gear without going through a slip mechanism during a fast forward operation, and with this arrangement, there is no need to provide two slip mechanisms, and the structure is simplified. It has the advantage of being simple.

[Brief explanation of drawings]

The drawings all relate to the reel shaft drive device of the present invention.
The figure is a perspective view of the external appearance of the tape recorder according to the present invention.
3 and 3 are plan views showing different states of the drive mechanism, FIG. 4 is a side view of the main parts of the drive mechanism, and FIGS. 5, 6, and 7 are plan views showing different states of the transmission mechanism. It is a diagram. Explanation of main drawing numbers (3)...Operation knob for playback, (4)...Operation knob for fast forward, (5)...Operation knob for stop, (6)...
・Rotating arm, (8)... Drive gear, (9)...
・High-speed drive gear, Qlj... Regeneration drive gear,
02-1. Mounting board, oQ...first drive gear, (g)...second drive gear, (a)...main drive gear,
Iri...Third drive gear, @...Fourth drive gear,
(A)...First reel shaft, (C)...Second reel shaft, C(I)...Switching lever, (To)...Rotating plate,
(To)...Intermediate gear, (C)...First transmission gear,
(40...Second transmission gear. Figure 1, Figure 3, Figure 4, Figure 5t4 (Figure i)

Claims (1)

[Claims] (1) In a reciprocating tape recorder having a playback function in a first direction and a playback function in a second direction opposite to the first direction, a first reel shaft that winds the magnetic tape in the first direction; The rotation of the second reel shaft that winds the magnetic tape in the second direction and the special electric motor for playback operation is transmitted at low speed through the slip mechanism, and the rotation of the special electric motor for fast forward operation is transmitted at high speed without going through the slip mechanism. A main drive gear to be transmitted, a rotating plate that is moved to a first operating position and a second operating position by operating a fast-forward operation knob, and a rotating plate that is rotatably mounted on the rotating plate and that is rotatably mounted on the rotating plate. The moving plate is the first
a first transmission gear that meshes with the main drive gear when in the operating position and transmits the rotation of the main drive gear to the first reel shaft; and a first transmission gear that is rotatably mounted on the rotation plate and rotates the rotation A reel shaft drive device for a reciprocating tape recorder, comprising a second transmission gear meshing with the main drive gear and transmitting rotation of the main drive gear to the second reel shaft when the plate is in a second operating position.