JPH061573B2 - Tape reversing device for tape recorder - Google Patents

Description

The present invention relates to a tape traveling direction reversing device for a tape recorder, which is capable of reversing the tape traveling direction by reversing the rotation direction of a motor.

(B) Prior Art In a tape recorder, when the tape is reproduced to the end, the running direction of the tape is automatically reversed, and the reproduction is performed in the opposite direction, for example, Japanese Patent Laid-Open No. Sho-6.
1-51641. There is a method of reversing the rotation direction of the motor to reverse the traveling direction of the tape.

(C) Problems to be Solved by the Invention In the tape recorder that reverses the rotation direction of the motor and reverses the traveling direction of the tape as described above, one motor is used to rotate the reel shaft and drive the capster. The take-up gear for playing or recording and the fast take-up gear for fast winding or fast rewinding are provided on the rotatable mounting member, and depending on the rotation direction of the motor during recording or playback. The mounting member provided with the take-up gear is swung by the rotational force of the take-up gear that is rotated, and the drive gear rotated by the motor causes the take-up gear to mesh with either the left or right reel gear. The reel gear is rotated to wind the tape, and at the time of fast-rewinding or fast-winding, the rotational force of the fast-winding gear causes the mounting member to which the fast-winding gear is attached to swing to move the fast-winding gear. The drive Meshes was on the car and the reel gear, the reel gear rotates at a high speed is performed back or Hayamaki up fast winding of the tape.

In a tape recorder that winds or rewinds by swinging the mounting member by the rotational force of the gear as described above, the mounting member to which the fast-winding gear is mounted swings by the rotation of the gear during playback or recording. It is necessary to prevent this from happening and to prevent the mounting member to which the take-up gear is attached from rocking due to the rotational force of the gear during rewinding or early winding.

Therefore, the present invention provides a tape traveling direction reversing device for a tape recorder that achieves the above object by using a sliding substrate.

(D) Means for Solving the Problems The tape traveling direction reversing device of the tape recorder of the present invention has a drive gear driven by a motor, a pair of left and right reel gears each having a reel shaft, and a first engaging member at the tip. A first mounting member that has a low-speed winding gear that transmits the driving force of the dowel pin and the drive gear to the reel gear and that is rotatably mounted, and the driving force of the second engagement pin and the drive gear at the tip. A second mounting member having a high-speed winding gear that transmits at high speed to a reel gear and having a distal end rotatably mounted, and a first mounting member slidably mounted to engage with the first and first engaging pins. And a sliding substrate having a second engaging recess.

(E) Action Since the present invention has the above-described configuration, when the sliding substrate is in the non-sliding position in the stopped state, the first engaging pin of the first mounting member is connected to the first engaging portion of the sliding substrate. To hold the low-speed winding gear at the neutral position, and rotate the second mounting member in either the left or right direction depending on the rotation direction of the drive gear to mesh the high-speed winding gear with the left or right reel gear. The reel gear is rotated at a high speed to quickly rewind or wind the tape. When the sliding board is slid during reproduction or recording, the second engaging pin of the second mounting member is engaged with the second engaging recess of the sliding board. Therefore, only the first mounting member is rotated by the rotation of the drive gear, the low-speed winding gear is meshed with the reel gear, and the reel gear is rotated to wind the tape.

(F) Embodiment An embodiment of the present invention will be described with reference to the drawings. (1) and (2) are reel shafts having reel gears (3) and (4), respectively, and (5) is the right reel shaft (2). ) Independent of the reel shaft (2)
The motor (6) is provided so as to rotate, and the direction of rotation of the rotating shaft (6) is changed by reversing the polarity of the power supply voltage. (7) and (8) are left and right flywheels having capstans (9) and (10), respectively, and (11) is a drive gear (12) or a drive roller provided with the rotary shaft of the motor (5). (6), flywheel (7), (8), transmission roller (13) and drive roller
A belt (14) is suspended around the (11) and is rotated by the rotation of the rotating shaft (6). Reference numeral (15) is a first mounting member provided with the drive roller (11) and rotatably supported by a shaft (17) on the substrate (16), which has a first engaging pin (18) at its tip, First low-speed take-up gear (19) and left and right idler gears that engage with the drive gear (12) downward by extending the engagement pin (18)
It has a second low-speed winding gear (20) that selectively meshes with (21) and (22). The idler gears (21) and (22) are fixed and always mesh with the left and right reel gears (3) and (4). (23) is the substrate (1
6) A second mounting member whose distal end is axially supported by the upper shaft (24), and a second engaging pin (26) at the tip and an engaging projection (2
7) is provided, and the first high-speed winding gear (2) meshing with the second low-speed winding gear (20) is provided below the second engagement pin (26).
A second high-speed winding gear (29) selectively meshing with the intermediate gears (30) and (31) that are always interlocked with 8) and the reel gears (3) and (4) is provided. Reference numeral (33) is a sliding base plate which is slid in the direction of arrow (A) or arrow (B) by a plunger or the like which will be described later. The second engaging recess (3) with which the first window (35) having the (34) and the second engaging pin (26) are engaged.
A second window (37) having 6) is formed. Reference numeral (39) is a plunger, and the iron core (40) has a locking projection (41) that engages with the engagement projection (27) of the second mounting member (23), and is slidable. The operated operating piece (42) is interlocked. (43) is the engaging parts (44), (4
An assist gear having an engaging cam (46) and a non-circular cam (47) each having a pin 5 (5) is rotatably attached to the engaging cam (46) by a shaft (48) and a pin ( The pin (51) provided at the tip of the trigger arm (50) engaged at 49) is engaged. (52),
Reference numeral (53) denotes a first transmission gear that meshes with a gear (not shown) included in the flywheel (7), and a second transmission gear that is coaxial with the first transmission gear.
Transmission gears, (54), (55) are respectively third and fourth transmission gears provided coaxially, and the third transmission gear (54) is the second transmission gear (5
3), and the fourth transmission gear (55) selectively meshes with the assist gear (43). (56) is a connecting piece pivotally supported by the shaft (57),
The pin (58) at the tip is engaged with the non-circular cam (47) and the other end is connected to the sliding base plate (33) by the pin (59).

Next, the operation of the present invention will be described.

(1) Stopped state FIG. 1 shows a stopped state, in which the sliding board (33) is slid to the non-sliding position and the first engaging pin (18) engages with the first engaging recess (34). However, the first mounting member (15) is held in the neutral position, and the second low-speed winding gear (20) is attached to either the left or right idler gears (21), (2
It does not mesh with 2). The second engaging pin (26) is released from the second engaging concave portion (36), but the second mounting member (23) is in the neutral position because the motor (5) is stopped. The high-speed winding gear (29) does not mesh with the left and right intermediate gears (30), (31). Further, the plunger (39) is excited, the iron core (40) is oriented in the direction of the arrow (C), and the trigger arm is
The pin (51) of (50) engages with the engaging portion (44) of the assist gear (43) to lock the assist gear (43), and the assist gear (4
The toothless portion (60) of 3) faces the fourth transmission gear (55), and the assist gear (43) and the fourth transmission gear (55) do not mesh with each other.

(2) Playback state or recording state To enter the playback state or recording state, press the playback button or recording button (not shown).

Then, assuming that the tape is now played or recorded in the first direction in which the tape is run from the left to the right, the motor (5) is rotated counterclockwise and is linked to the motor (5) by the belt (14). Rotate the flywheels (7) and (8) counterclockwise, and rotate the drive roller (11) clockwise. The drive roller
When the drive gear (12) is rotated clockwise with the rotation of (11), the first low-speed winding gear (19) meshing with the drive gear (12) is rotated counterclockwise. When the first low-speed winding gear (19) is rotated counterclockwise, the first mounting member (15) connected to the first low-speed winding gear (19) by a magnetic clutch rotates clockwise. However, since the first engagement pin (18) is engaged with the first engagement recess (34), the first attachment member (1)
5) is not rotated. On the other hand, when the play button or the like is pressed, the plunger (39) temporarily loses its magnetic force, so that the attraction force to the iron core (40) is released and the actuating piece (42) becomes a spring (62) as shown in FIG. Sliding in the D direction, the locking projection (41) at the tip engages with the engagement projection (27). Therefore, until the sliding base plate (33) is slid, the second engagement pin (26) is not fitted in the second engagement recess (36) and the second mounting member (23) is free. When the drive gear (12) rotates, the first high speed take-up gear (28) interlocking with the drive gear (12) rotates, the second mounting member (23) rotates, and the second high speed take-up gear ( 29) may mesh with the intermediary gear (30) and rotate the reel gear (3) at a high speed.However, as described above, the engaging projection (27) and the locking projection (41) engage with each other. 2 Mounting member (2
3) is never rotated. Further, the operating piece (42) is an arrow
By sliding in the (D) direction, the trigger arm (50) is rotated clockwise and the pin (51) at the tip is disengaged from the engaging portion (44) of the engaging cam (46). The toothless portion (60) slightly rotates the assist gear (43) facing the fourth transmission gear (55) and meshes with the fourth transmission gear (55). The fourth transmission gear (5
5) rotates because the rotational force of the flywheel (7) is transmitted through the first, second and third transmission gears (52), (53), (54), and the assist gear (43) is missing. The tooth portion (61) is the fourth transmission gear (55)
It is rotated to the position facing. When the assist gear (43) rotates, the pin (58) at the tip of the coupling piece (56) is projected to the outermost part of the non-circular cam (47) of the assist gear (43) as shown in FIG. Since it is positioned, the connecting piece (56) is rotated counterclockwise to slide the sliding base plate (33) in the direction of arrow (B) against the biasing force of the spring (64). Sliding board (33)
Is slid in the direction of the arrow (B), the first engagement pin (18) is disengaged from the first engagement recess (34), so that the first mounting member (15) rotates the drive gear (12). Is rotated clockwise by the second low speed take-up gear (20) to mesh with the idler gear (22). Therefore, the rotational force of the motor (5) is the belt (14), the drive gear (12) integrated with the drive roller (11), the first and second low speed take-up gears (19), (2
0) and the idler gear (22) through the right reel gear
The reel hub transmitted to (4) and fitted to the reel gear (4) is rotated. On the other hand, when the sliding board (33) is slid in the direction of the arrow (B), the right pinch roller fitting (not shown), which was previously held in the non-operating position by the sliding board (33), is moved. It was rotated by a spring, a pinch roller (not shown) was pressed against the cabstan (10), and the tape was run at a constant speed with the pinch roller and the capstan (9) to play or record, and then run at a constant speed. The tape is wound on the reel hub.

At this time, since the second engagement pin (26) is fitted in the second engagement recess (36) of the sliding substrate (33), the iron core (40) of the plunger (39) is
Is sucked and the operating piece (42) is slid again in the direction of the arrow (C),
After the engagement protrusion (27) and the engagement protrusion (41) are disengaged, the second attachment member (23) is rotated even if the first high-speed winding gear (28) continues to rotate. Never.

When the stop button is pressed, the plunger (39) is de-excited again and the operating piece (42) slides in the direction of the arrow (D) to move the trigger arm (5
(0) is rotated clockwise to disengage the pin (47) from the engaging portion (45), so that the assist gear (43) rotates and the fourth transmission gear (55)
And is rotated to the position shown in FIG. Then, the pin (58) of the connecting piece (56) is moved in the inner peripheral direction along the non-circular cam (47), so that the connecting piece (56) is also rotated clockwise to move the sliding base plate (33). Slide it to the stop position in the direction of the arrow (A) to return to the stop condition shown in FIG.

When the rotation direction of the motor (5) is reversed in the reproduction or recording state in the first direction in which the tape is run from the left to the right, the reproduction state in the second direction in which the tape is run from the right to the left or Recorded. That is, when the motor (5) rotates in the reverse direction, the drive roller (11) also rotates in the reverse direction, and the first low-speed winding gear (1
9) rotates in the opposite direction. Then the first mounting member (15)
Rotates counterclockwise this time to engage the second low speed winding gear (20) with the idler gear (21) and rotate the reel gear (3) in the opposite direction. When the first mounting member (15) is rotated counterclockwise, the pinch roller control plate (not shown) slides in the direction of the arrow (C), and the left pinch roller mounting bracket that has been locked until then Then, the pinch roller is pressed against the capstan (9), and the pinch roller on the right side is released from the capstan (10). Therefore, the tape is run to the left by the pinch roller and the capstan (9), and the run tape is wound around the reel hub rotated by the reel gear (3) to record or play in the second direction.

(3) Fast rewind or fast rewind To fast rewind the tape from the stopped state shown in FIG. 1, press the fast rewind button. Then, the motor (5) is rotated at a high speed in the same direction as the reproduction or recording direction so far, and the drive gear (12) is rotated to mesh with the first low speed take-up gear (19) and the first low speed take-up gear (19). The first high speed winding gear (28) meshing with the second low speed winding gear (20) coaxial with the first low speed winding gear (19) is rotated. Since the first high-speed winding gear (28) has a smaller diameter than the first low-speed winding gear (19) and the rotation speed of the motor (2) is faster, it is higher than the first low-speed winding gear (19) and in the reverse direction. To be rotated. At this time, the sliding base plate (33) is in the non-sliding position because the plunger does not operate, and thus the first engaging pin (34) is inserted into the first engaging pin (34).
Since the first mounting member (15) is locked because the first mounting member (15) is engaged with the second mounting member (23), the second mounting pin (26) is secondly engaged by the second mounting member (23). Since the concave portion (36) is not engaged and is free, when the first high-speed winding gear (28) is rotated, it is rotated clockwise or counterclockwise depending on the rotation direction.
If it is in the above-mentioned first regenerating state, the first high-speed winding gear (28) rotates clockwise and the second mounting member (23) rotates clockwise by the action of the magnet clutch, and the second high-speed winding gear (23) rotates. The take-up gear (29) is meshed with the intermediary gear (30), and the reel gear (3) is rotated at a high speed to fast-rewind the tape.

To fast forward the tape, turn on the fast forward button and rotate the motor (5) at a high speed in the opposite direction to the rewinding direction. Then, the first high-speed winding gear (28) is rotated in the opposite direction to the above, the second mounting member (23) is rotated counterclockwise, and the second high-speed winding gear (29) is transferred to the intermediate gear (3).
Rotate the reel gear (41) on the right side meshing with 1) in the same direction as during playback to wind the tape early.

(G) Effect of the Invention The tape traveling direction reversing device of the present invention is a sliding substrate provided slidably between a sliding position for performing a low-speed feed operation and a non-sliding position for performing a high-speed feed operation. A first mounting member rotatably mounted with a low-speed winding gear that drives the reel shaft at a low speed, and a second mounting member rotatably mounted with a high-speed winding gear that performs a high-speed driving operation of the reel shaft. Since the engaging concave portion for controlling the rotating operation of the reel shaft is provided to control the driving operation of the reel shaft, it is only necessary to select the position of the sliding substrate and the rotation direction of the motor to move the first direction or the second direction. It is possible to perform switching of reproduction (recording) and switching operation of fast winding or fast rewinding, and the present invention has a very great effect on simplification of the drive mechanism of the tape recorder.

[Brief description of drawings]

FIG. 1 relates to a tape traveling direction reversing device of a tape recorder of the present invention, and FIG. 1 is a plan view showing a stopped state, and FIG.
FIG. 4 is a plan view showing a recording / reproducing state, FIG. 3 is a plan view showing a fast winding state, and FIG. 4 is a partial plan view showing a state immediately after pressing the record button. Description of main drawing numbers (1), (2)… reel shaft, (3), (4)… reel gear, (5)… motor, (7), (8)… flywheel, (12)… drive Gears, (1
5) ... first mounting member, (18) ... first engaging pin, (19) ... first low speed winding gear, (20) ... second low speed winding gear, (23) ... second mounting member, (26) ... Second engagement pin, (27) ... engagement protrusion, (28) ...
First high-speed winding gear, (29) ... Second high-speed winding gear, (33) ... Sliding substrate, (34) ... First engaging recess, (36) ... Second engaging recess, (3
9) ... Plunger, (41) ... Locking protrusion, (42) ... Operating piece.

Claims (1)

[Claims] 1. A pair of left and right reel shafts provided with reel gears, a drive gear that is rotationally driven by a motor, and a rotary gear that is rotatably mounted on a substrate and that rotates the drive gear. A low-speed winding gear that transmits at low speed to the gear is rotatably mounted, and a first mounting member having a first engaging pin at its tip portion, and a rotatably mounted substrate, and the drive. A high-speed take-up gear that transmits the rotational force of the gear to the reel gear at high speed is rotatably mounted, and a second mounting member having a second engaging pin at the tip thereof and a slide that performs a low-speed feed operation. It is slidably provided between a dynamic position and a non-sliding position for performing high-speed feed operation, and is engaged with the first engaging pin and the second engaging pin when in the non-sliding position and the sliding position, respectively. Forming a first engaging recess and a second engaging recess And a low speed take-up gear for the first mounting member by the engagement of the first engaging pin and the first engaging recess when the sliding substrate is in the non-sliding position. The rotation of the drive gear is held at a position where rotation is not transmitted to the gear, and the rotational displacement of the second mounting member is caused by the rotation of the drive gear, thereby performing a high-speed rotation transmission operation to the reel gear by the high-speed winding gear to perform the sliding movement. When the substrate is in the sliding position, the second mounting member is held by the engagement of the second engagement pin and the second engagement recess in a position where the high-speed winding gear does not transmit rotation to the reel gear. A tape traveling direction reversing device for a tape recorder, wherein a low speed rotation transmission operation to a reel gear by the low speed winding gear is performed by rotational displacement of the first mounting member due to rotation of the drive gear.