JPH02260261A - Tape recorder - Google Patents

Abstract

PURPOSE:To ensure a mode changeover operation and to promote the operability by providing a means for bringing a reverse changeover means under its operation preventing state at the time of performing a play assist with a play assist means. CONSTITUTION:At the time of performing the play assist with the play assist means, the reverse changeover means is brought under its operation preventing state. That is, a take-up gear 14 is meshed with a cam relay gear 24 of a reverse changeover system, whereas a high speed slider 28 is formed with an engaging groove 37 for preventing a changeover operation, and this engaging groove 37 is engaged with a projection of a control slider for working by a play operation at the time of the play assist operation. By this method, the mode changeover operation is ensured while the operability is promoted.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a tape recorder device.

(Prior Art) In recent years, tape recorder devices have become more compact and multifunctional. For example, a so-called auto-reverse function, which allows playback at least in the forward and reverse running directions of the tape, has been adopted.

As a means for switching the auto-reverse function and each tape mode in such a tape recorder device,
For example, a mechanical soft touch mechanism is used, and in this case, the rotation direction of the motor is always the same rotation direction, such as forward play, reverse play, fast forward (F F), rewind (REW), etc. The direction of rotation was always the same.

Therefore, if the motor has sufficient power and the belt has sufficient transmission force, no particular problem will occur even if the power assist and high-speed components operate simultaneously. If there is not enough power to transmit the belt, the side of the machine is used to release the fast forward (FF) and rewind (REW) loads only while the power assist cam is rotating.

Incidentally, in recent years, there has been a trend to use brushless motors as the motors used in the above-mentioned tape recorders (headphone type) in order to improve the performance of the set, and sensorless brushless motors are also being used. These motors can be used in both forward and reverse rotation, so
It is possible to simplify each mechanism in the tape recorder device.

For example, in the case of a device using electric logic, since the control is simple, it becomes possible to use a high-speed FF/REW system by changing the rotation direction, and it becomes possible to aim at a total cost reduction.

However, when using such a tape recorder device with the motor rotating in both forward and reverse directions, if the power assist rotation direction and the high speed (REW) rotation direction are opposite, if these simultaneous operations are performed, it will not work properly. There is a problem that it becomes impossible to operate.

(Problem to be Solved by the Invention) As described above, in the conventional tape recorder device, when the motor is used to rotate in both forward and reverse directions to operate each mechanism, for example, when multiple operations are performed simultaneously, However, there is a problem in that problems such as mechanical locks occur.

The present invention is intended to solve the above-mentioned conventional problems,
It is an object of the present invention to provide a tape recorder device that can perform mode switching operations favorably and reliably, thereby improving operability.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes a motor that rotates forward and backward, and a play assist that is driven by the motor and performs play assist when a play operation is performed to enter a tape play state. means, a reverse switching means driven by the motor to switch the tape running direction when a reverse operation is performed, and preventing operation of the reverse switching means when the play assist is being performed by the play assist means. The reverse switching operation blocking means is also provided.

(Function) In the present invention, when play assist is performed by the play assist means, the operation of the reverse switching means is inhibited.

Therefore, for example, since the reverse switching operation is blocked during the play assist operation, the mode switching operation can be performed favorably and reliably, and the operability can be improved.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a tape recorder device according to an embodiment of the present invention, and FIG. 2 is a plan view from the back side of FIG.

In FIG. 1, 1 indicates a chassis.

A holder 2 is rotatably disposed on the chassis 1, and a reproducing head 3, a pair of pinch rollers 4.4, and the like are disposed on the holder 2. Further, on the chassis 1, a pair of capstan shafts 5.5 corresponding to the pinch roller 4.4 and a roll 6.6 corresponding to the hub of the cassette tape are arranged.

Further, as shown in FIG. 2, a motor 7 that rotates in both forward and reverse directions is disposed on the back surface of the chassis 1. The rotation of the motor 7 is controlled by a center pulley 9 via a drive belt 8.
, the right flywheel 10, the tension pulley 11, and the left flywheel 12. A center pulley gear 13 is formed on the center pulley 9, and a winding gear 14 is meshed with this gear 13. Thereby, the take-up gear 14 is rotated in both forward and reverse directions depending on the rotation direction of the motor 7. A power assist cam relay gear 15 is meshed with the winding gear 14, and the cam relay gear 1
5 is capable of meshing with the play cam gear 16, and when the cam lock lever 17 is operated by play operation or stop operation, the play cam gear 16 engages with the cam relay gear 15.
It is engaged with and rotated, thereby power assisting the play state and stop state.

Further, a high speed gear 19 supported by a high speed gear lever 18 is disposed near the winding gear 14, and during a rewinding operation (REW operation), the rotation of the winding gear 14 is controlled by the high speed gear 1.
The rotation of the winding gear 14 is transmitted to the left relay gear 20 and the left reel gear 21 via the high speed gear 19 during a fast forward operation (FF operation).

Furthermore, a cam relay gear 24 of a reverse switching system is meshed with the take-up gear 14, and the ASO
When the manual slider 25 is moved, the reverse cam gear 26 is operated and the reversing cam gear 26 is engaged with the cam relay gear 24 and rotated, thereby performing a reverse operation.

Next, the high-speed mechanism for rewinding and fast-forwarding the tape described above will be explained using FIGS. 3 to 5. In addition,
These figures are plan views seen from the back side of FIG. 2, with the main chassis removed. Further, in these figures, parts common to those in FIG. 2 are given the same reference numerals and redundant explanations will be omitted.

As shown in FIG. 3, a pin 27 is formed on the high-speed gear lever 18 that rotatably supports the high-speed gear 19, and the pin 27 is actuated by a switching cam 29 formed on the high-speed slider 28. A switching lock groove 30 is formed in the high speed slider 28, and a pin 32 of a high speed lock lever 31 is engaged with this switching lock groove 30 to lock the switching position. Further, a switch actuation groove 33 is formed in the high-speed slider 28, and a movable piece 35 of a leaf switch 34 is engaged with this groove 33. Then, depending on the direction of movement of the high-speed slider 28 by reverse operation, it contacts one of the switch terminals 36a and 136b to control the direction of rotation of the motor 7. Furthermore, an engagement groove 37 for blocking a switching operation is formed in the high-speed slider 28, and a protrusion of a control slider activated by a play operation is engaged with this engagement groove 37 during a play assist operation. .

As shown in FIG. 4, in the high-speed mechanism configured as described above, when a rewinding operation (REW operation) is performed by moving the high-speed slider 28, the two switching cams of the high-speed slider 28 The gear lever 18 is operated and one high-speed gear is engaged with the take-up gear 14 and the left relay gear 20. Also, at this time, the movable piece 35 is moved and comes into contact with the switch terminal 36a, which causes the motor 7 to rotate in the counterclockwise direction, which is the forward rotation of the motor 7, and the winding gear 14 rotates in the forward direction due to the forward rotation of the motor 7. is rotated clockwise, and the left relay gear 20 is rotated clockwise via the high speed gear 19.
As a result, the left reel gear 21 is rotated counterclockwise,
The tape is rewound (REW).

Further, as shown in FIG. 5, when the high-speed slider 28 is moved to perform a fast-forward operation (FF operation), the high-speed gear lever 18 is actuated by the switching cam 29 of the high-speed slider 28, and the high-speed gear 19 is switched to the take-up gear. 14 and right relay gear 2
It meshes with 2. Also, at this time, the movable piece 35 is moved and comes into contact with the switch terminal 36b, which causes the motor 7
The reverse rotation of the motor 7 causes the take-up gear 14 to rotate counterclockwise, which is the reverse rotation of the motor 7, and the right relay gear 22 to rotate counterclockwise via the high speed gear 19. As a result, the right reel gear 23 is rotated clockwise, and the tape is fast-forwarded (FF).

Next, the play operation mechanism will be explained using FIGS. 6 to 8, and the play assist mechanism will be explained using FIGS. 9 to 11. In these figures, parts common to those in FIGS. 2 to 5 are denoted by the same reference numerals, and redundant explanations will be omitted.

The play operation mechanism, as shown in FIGS. 6 and 7,
When the play operation plate 38 is moved in the direction of arrow A1 by the play operation, the first play lever 39 is rotated in the direction of arrow B1, thereby the second play lever 40 is rotated in the direction of arrow B2, and the trigger Slider 41 is arrow A
Moved in one direction. The trigger slider 41 is formed with a regulating claw 42 that regulates the rotation of the cam lock lever 17. As the trigger slider 41 moves in the direction of arrow A1, the regulating claw 42 comes off and the cam lock lever 17 is moved.
rotates in the direction of arrow B2. As a result, the operating protrusion 17a of the cam lock lever 17 moves the control lever 43 toward the arrow B1.
This causes the control slider 44 to move in the direction of arrow C.
Moved in one direction. The control slider 44 is formed with a protrusion 44a for preventing a switching operation, and the control slider 44 is provided with a protrusion 44a for preventing a switching operation.
Due to the movement in this direction, the protrusion 44a is engaged with the engagement groove 37 formed in the high-speed slider 28 for blocking switching operation. Therefore, when this bird is in a negative state, RE
High-speed operation of W and FF is prohibited.

Further, as shown in FIGS. 9 and 10, when the play operation described above is performed and the cam lock lever 17 is rotated in the direction of arrow B2, the cam relay gear 15 of FIG. As shown in FIG. 10, the cam 16a of the play cam gear 16 is pressed by the cam lock lever 17, and the play cam gear 16 is rotated counterclockwise. As a result, the play cam gear 1 is connected to the cam relay gear 15.
Gear No. 6 is engaged, the rotation of the take-up gear 14 is transmitted to the play cam gear 16 via the cam relay gear 15, and play assist is started. Then, as shown in FIG. 11, when the play cam gear 16 is rotated until the gear notch of the play cam gear 16 corresponds to the cam relay gear 15, the cam lock lever 17 is pressed by the cam 16a. is rotated in the direction of arrow 81 and returned.

Also, at this time, the play control lever 45 is rotated in the direction of arrow B1 by the cam of the play cam gear 16. As a result, a switching control lever, which will be described later, is moved to a switchable state.

As a result, the play operation mechanism, as shown in FIG.
The cam lock lever 17 is rotated in the direction of arrow 81 and returned to its original position, and thereby the control lever 43 is rotated in the direction of arrow B2, the control slider 44 is moved in the direction of arrow C2, and the protrusion 44a is moved into the engagement groove of the high-speed slider 28. It's out of 37.

Further, by rotating the cam lock lever 17 in the direction of arrow B1, the trigger slider 41 is moved in the direction of arrow A2,
As a result, the second play lever 40 is rotated in the direction of arrow B1, and the first play lever 39 is rotated in the direction of arrow B1.
rotated in the direction Then, the play operation board 38 moves to arrow A.
The play operation mechanism is returned by being moved in two directions.

Note that if you operate the high-speed mechanism in this state, the system will enter the queue review state.

Next, the reverse switching mechanism and the direction blocking mechanism will be explained using FIGS. 12 to 15. In these figures, parts common to those in FIGS. 2 to 11 are denoted by the same reference numerals and redundant explanations will be omitted.

As shown in FIGS. 12 and 13, in the reverse switching mechanism, when a reverse switching operation is performed while the tape recorder is in a playing state, the ASO manual slider 25 moves in the direction of arrow A.
As a result, the reverse cam lock lever 46 is rotated in the direction of arrow B2 by the urging force of the urging member 47. This causes the reverse cam gear 26 to move to the direction indicated by the arrow 82.
The reverse cam gear 2 is rotated in the direction of the cam relay gear 24.
6 gears are engaged, and the reverse cam gear 26 is further rotated counterclockwise to perform a reverse switching operation.

ASO manual slider 25 and cam lock lever 17
A switching control lever 48 is disposed between the ASO manual slider 25 and a claw portion 48a of the lever 48. As shown in FIG. 13, the switching I control lever 48 is pressed only in the play state by the play control lever 45 of the play assist mechanism described above and is rotated in the direction of arrow B2, so that the claw portion 48a is turned into the engaging portion. It is removed from 25a. Further, as shown in FIG. 14, when the play assist mechanism is in the play assist operation state, the switching control lever 48 is not pressed by the play control lever 45, so the switching control lever 48 is biased in the direction of the arrow 81 by the biasing member 49. The claw portion 48a becomes engaged with the engaging portion 25a, and the reverse switching operation is blocked.

Further, as shown in FIGS. 12 and 15, a switching control slider 50 is disposed between the ASO manual slider 25 and the high-speed lock lever 31 so as to be movable in the directions of arrows c and c2. This switching control slider 50 has an engagement groove 2 formed in the ASO manual slider 25.
5b is formed with an engageable protrusion 50a, and the switching control slider 50 is biased in the direction of arrow C1 by a biasing member 51. When a high-speed operation is performed and the high-speed lock lever 31 is activated, the switching control slider 50 is moved in the direction of arrow C2 and engaged with the protrusion 50a and the force-engaging groove 25b. This allows the ASO manual slider 25
movement is blocked, and the reverse switching operation is blocked.

Therefore, in the tape recorder device of this embodiment, when a play operation is performed and a play assist operation is performed, since the switching control lever 48 is not pressed by the play control lever 45, the biasing member 49 rotates the lever. The claw portion 48a of 48 is engaged with the engaging portion 25a of the ASO manual slider 25, and the reverse switching operation is blocked.

Therefore, two mode switching operations are not performed at the same time, and problems such as mechanical locking are effectively prevented.

[Effects of the Invention] As explained above, in the tape recorder device of the present invention,
Since the operation of the reverse switching means is inhibited when play assist is performed by the play assist means, for example, the reverse switching operation is prevented during the play assist operation, so that the mode switching operation can be carried out well and reliably. can be used to improve operability.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a tape recorder device according to an embodiment of the present invention, Fig. 2 is a plan view from the back side of Fig. 1, and Figs. 3 to 5 explain the high-speed mechanism shown in Fig. 2. 6 to 8 are diagrams for explaining the play operation mechanism in Figure 2, Figures 9 to 11 are diagrams for explaining the play assist mechanism in Figure 2, 12 to 15 are diagrams for explaining the reverse switching mechanism and direction blocking mechanism of FIG. 2. FIG. 7...Motor, 13...Center pulley gear, 14
... Winding gear, 15.24 ... Cam relay gear, 16
．． ...Play cam gear, 17...Cam lock lever 2
5... ASO manual slider, 25a... Engaging portion, 26... Reverse cam gear, 28... High speed slider, 37... Engagement groove for blocking switching operation, 38...
Play operation board, 41...Trigger slider, 44...
- Control slider, 44a... protrusion for blocking switching operation,
48...Switching control lever, 48a...Claw portion. Applicant: Toshiba Corporation

Claims (1)

[Scope of Claims] A motor that rotates in forward and reverse directions; a play assist means that is driven by the motor and performs play assist to enter a tape play state when a play operation is performed; and a play assist means that is driven by the motor and performs a reverse operation. and reverse switching operation blocking means that prevents operation of the reverse switching means when the play assisting means is performing the play assist. tape recorder device.