JP2568501B2 - Tape recorder - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape recorder for recording / reproducing a normal / reverse recording / reproducing magnetic tape with one capstan.

2. Description of the Related Art In recent years, in order to improve portability of tape recorders, efforts to reduce the size, thickness, and weight have become more active, and those having a reverse function at the same time have become conspicuous.

Generally, a tape recorder having a reverse function has two sets of pinch rollers, a capstan, and a flywheel.

Hereinafter, an example of a conventional reverse tape recorder will be described with reference to the drawings. Fig. 3 (a) shows the normal rotation.
FIG. 7A is a top view of a main part at the time of reversal. 1a and 1b are capstans, 2a and 2b are pinch rollers, and 3a and 3b are flywheels. The switching gear 6 meshes with one of the winding gears 5 and 9 by the slip pulley 7, and the winding reels 4 and 8 start rotating. In the case of normal rotation recording and reproduction shown in FIG. 3A, the first take-up reel 4 rotates, the first capstan 1a and the first pinch roller 2a come into contact, and the tape is driven. Third
In the case of the reversal shown in FIG. 5A, the second take-up reel 9 rotates, the second capstan 1b and the second pinch roller 2b come into contact, and the tape is driven. In other words, each capstan shaft is rotated in a fixed direction and relatively in the opposite direction, and the pinch rollers are independently abutted on the corresponding capstan shafts, thereby changing the tape playback or recording state in the normal rotation direction. And the reverse direction. 3 and 4, reference numeral 10 denotes a magnetic head, 11 denotes a tape cassette, and 25 denotes a mechanism chassis.

Problems to be Solved by the Invention However, according to this method, since there are inevitably two pinch rollers and a flywheel, when viewed from the plane direction as shown in FIG. 3 or as shown in FIG. When viewed from the direction D, there is a problem that a large space is occupied in the vicinity of the left and right sides of the head 10, and other components cannot be formed. In addition, miniaturization of portable tape recorders,
When trying to reduce the thickness, there are always issues such as securing the battery space that is the power supply and where to set the operation button mechanism. In this regard, the space occupies a large space near the head described above. This has been a constraint on the configuration of miniaturization. In addition, the problem with the installation of the operation button mechanism, unlike the case of the storage battery, is that it is necessary that there is no problem in operability, so that it does not mean that it can be installed anywhere.

An object of the present invention is to solve such a problem, and to provide a tape recorder which enables normal / reverse recording / reproducing with a simple configuration and which can reduce the occupied area of the mechanism.

Means for Solving the Problems In order to solve the above problems, the tape recorder of the present invention comprises a motor, a rotatable first reel base and its gear, and a rotatable second reel base. A magnetic head disposed on a substantially vertical bisector of a line connecting the rotation center of the first reel base and the rotation center of the second reel base; A driving rotator disposed between the vicinity and the magnetic head, the driving torque of the motor being transmitted and capable of normal rotation or reversal, and a magnetic tape disposed on one side of the magnetic head and rotated by the motor to drive the magnetic tape And a reproducing rod disposed on the other side of the magnetic head, meshing with a gear integrated with the driving rotating body, and a normal rotation reproducing relay gear provided on the normal rotating rod; and the driving rotating body. Engage with one gear A mechanism chassis including: a reversing regeneration relay gear provided on the reversing rod; a control rod interlocking with the regenerating rod while controlling movement of the forward rotation rod and the reversing rod; and An operation button is provided on a housing surface facing the side on which the magnetic head is disposed, and is provided with an operation button connected to the reproduction rod.When the operation button is pressed, the control rod controls the normal rotation rod and the reversing rod. By releasing the rotation, the forward rotation rod or the reverse rod is moved by rotating the forward rotation reproduction relay gear or the reverse reproduction relay gear in accordance with the rotation direction by rotating the driving rotor, and By engaging the relay gear with the reel base gear by moving, and communicating with the first reel base or the second reel base, The driving torque of the serial motor is obtained by configured to transmit to said first reel base or the second reel base.

The tape recorder according to the present invention is provided with one side provided on one side of the head.
By switching the direction of rotation of the tape using only the capstans, the running direction of the tape can be switched, and normal / reverse recording / reproduction can be performed. Further, by pressing the operation button, the second drive torque transmitting means is moved via the mechanism, and the first drive torque transmitting means and the first reel base or the second reel base are communicated with each other. The drive torque of the motor can be transmitted to the first reel stand or the second reel stand. That is, the occupied area of the mechanism can be reduced while being a reverse type.

An embodiment will be described below with reference to FIGS. 1 and 2 showing an embodiment of the present invention. FIG. 1 is a perspective view showing the relationship between the drive and operation interlocking mechanisms for convenience, and c shows the position of the tape cassette.

In the figure, reference numeral 12 denotes a mechanism chassis, which directly or indirectly supports various mechanism components inside the tape recorder housing 12a, and directly supports operation components and a printed wiring board as necessary. Is what you do. Hereinafter, a mechanism mechanism configured in the mechanism chassis 12 will be described.

The mechanism chassis 12 is provided with a first reel base 13 and a second reel base 14 at substantially the right and left symmetrical positions in the center thereof, and these reel bases 13 and 14 have gears 13a and 14a. . Reference numeral 15 denotes a motor, the power of which is transmitted to a flywheel 17 and a counter wheel 18 by a belt 16, and a main gear 19, which is a driving rotating body, rotates through a gear 18a provided integrally with the counter wheel 18. It is driven. Through the main gear 19, the reel bases 13, 14 are driven to rotate at a constant speed or a high speed by an interlocking mechanism described later.

Numeral 20 denotes a magnetic head, which is disposed substantially at the center of one side of the mechanism chassis 12 facing substantially the center of the pair of reel stands 13 and 14, and is integrated with the flywheel 17 on one side of the magnetic head. A stun 21 is provided, and the tape is moved by a pinch roller 22 facing the capstan 21. Where capstan
Although there is one, the tape can be turned forward / reverse by reversing the rotation direction of the motor 15 forward / reverse.

23 is a fast-forward rod integrated with the fast-forward button 23a, 24 is a rewind rod integrated with the rewind button 24a, 25 is a play rod integrated with the play button 25a, 26 is a stop rod integrated with the stop button 26a,
The operation rods 23 to 26 are concentrated on one side of the mechanism chassis 12 on the other side where the flywheel 17 and the capstan 21 are arranged on one side of the magnetic head 20. Reference numeral 27 denotes a lock rod for fixing and holding the operation rods, and reference numeral 28 denotes a control rod for regulating the position of the pinch roller arm during reproduction.

FIG. 1 shows a state in which the fast-forward rod 23 is stopped.
Is pushed in, the fast-forward gear 30 transmits the rotational force of the main gear 19 to the gear 13a of the first reel base 13 via the arm 29, and performs fast forward. Next, when the rewind rod 24 is pushed in, the rewind gear 31 causes the rotational force of the main gear 19 to reach the second position.
To the gear 14a of the reel base 14 for rewinding. Next, when the reproduction rod 25 is pushed in, the reproduction conversion lever 32 is rotated to move the control rod 28 in the direction of the arrow X, whereby the normal rotation drive lever 35 and the normal rotation drive lever 35, The reversing drive lever 36 is released. If the motor 15 is rotating forward, the forward rotation direction A of the main gear 19
, The rotational force of the gear 19a integral with the main gear 19 is transmitted to the forward rotation play relay gear 37. At this time, the forward rotation rod 33 moves in the arrow Y direction, and the relay gear 37 Normal rotation regeneration driving is performed in mesh with the gear 13a. On the other hand, if the motor 5 is reversed, the main gear 19 rotates in the direction of arrow B, and the normal rotation rod 33 moves in the direction opposite to Y,
The reversing rod 34 is moved in the Y direction by the reversing play relay gear 38, and the relay gear 38 is connected to the gear 14a of the second reel base 14.
Inverted reproduction drive is performed. That is, at the time of reproduction, the rotation direction of the motor 15 can be switched between the normal rotation direction and the reverse rotation direction of the reel bases 13 and 14 via the main gear 19, and at this time, the rotation direction of the capstan 21 can be changed. Similarly, the direction is switched between the forward direction and the reverse direction, and the forward / reverse running drive of the tape is performed.

39 is a back tension load gear,
Is engaged only with the gear 14a of the second reel base 14. Then, an appropriate load configured on the gear 14a is applied to the reel base 14. The back tension load gear 39 is necessary in view of the configuration of the magnetic head 20. That is, as shown in FIGS. 2A and 2B, the magnetic head 20 is provided with a pad shifter 40, and when the magnetic head 20 is inserted into the cassette magazine 41, the pad 42 is moved to the front of the magnetic head 20. It works in a direction to separate it from the tape 43 in contact with 20a. Such a configuration is particularly useful for fast-forwarding and rewinding.
Thus, it is possible to achieve the object of reducing the winding torque of the motor 15 by eliminating the load of the motor 15 and simplifying the structure of the mechanism. As described above, due to the configuration in which the pad 42 is separated from the tape 43, the above-described gear 39 applies a back tension load instead of the pad pressure during constant speed running.

Effect of the Invention As described above, the tape recorder of the present invention includes a motor,
A first reel base rotatably provided and a gear thereof,
A second reel base rotatably provided and a gear thereof,
A magnetic head disposed on a substantially perpendicular bisector of a line connecting the rotation center of the first reel base and the rotation center of the second reel base, and between the magnetic head near the line and the magnetic head; A driving rotator to which a driving torque of the motor is transmitted and which can rotate forward or reverse, a capstan disposed on one side of the magnetic head and rotated by the motor to drive a magnetic tape, and the magnetic head A regenerative rod arranged on the other side of the motor, meshing with a gear integral with the driving rotator, and a forward regeneration relay gear provided on the normal rotation rod; meshing with a gear integral with the driving rotator and a reversing rod A mechanism chassis comprising: a reversing regeneration relay gear provided on the vehicle; a control rod for restricting movement of the forward rotation rod and the reversing rod and interlocking with the regeneration rod; An operation button connected to the reproduction rod, the operation rod being provided on the housing surface facing the side on which the magnetic head is disposed, and the control rod being turned by the control rod by pressing the operation button. The movement is enabled by releasing the regulation, and the rotation of the driving rotating body rotates the relay gear for normal reproduction or the relay gear for reverse reproduction in accordance with the rotation direction to move the normal rod or the reverse rod. By this movement, the relay gear meshes with the reel base gear, and the relay gear is brought into communication with the first reel base or the second reel base, so that the driving torque of the motor is reduced to the first reel base or the second reel base. The mechanism is designed to transmit to the two reel bases, so not only the operability is good with a simple configuration, but also the mechanism chassis between the operation buttons and both reel bases is mechanically mounted. It is possible to configure the necessity parts. Therefore, as a reverse type tape recorder, normal reproduction and reverse reproduction can be performed by one capstan, and the area occupied by the mechanism can be made very small, greatly contributing to miniaturization, weight reduction and multifunctionalization. It is a very effective invention.

[Brief description of the drawings]

FIG. 1 is a transparent top view showing the interlocking relationship in a stopped state of a tape recorder in one embodiment of the present invention, and FIGS. 2A and 2B are a perspective view and a side sectional view showing the configuration of the magnetic head unit. FIGS. 3A and 3B show a conventional reverse type tape recorder, wherein FIG. 3A is a top view at the time of normal rotation, FIG. 3A is a top view at the time of reverse rotation, and FIG. 4 is a front sectional view of the same. 12 …… Mechanism chassis, 12a …… Case, 13,14 …… Reel base, 15 …… Motor, 17 …… Flywheel, 19 ……
Main gear, 20 ... magnetic head, 21 ... capstan,
22 ... Pinch roller, 23-26 ... Operation rod group, 23a-2
6a …… Operation button group.

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Toshio Imai 1006 Kadoma, Kadoma Matsushita Electric Industrial Co., Ltd. (56) References Japanese Utility Model Application Sho 60-1994795 (JP, U) Japanese Patent Publication 54-26361 (JP) , B2)

Claims (2)

(57) [Claims] 1. A motor, a first reel base rotatably provided and a gear thereof, a second reel base rotatably provided and a gear thereof, and a rotation center of the first reel base. A magnetic head disposed on a substantially perpendicular bisector of a line connecting the rotation center of the second reel base and a drive torque of the motor disposed between the vicinity of the line and the magnetic head; A rotator that can be rotated forward or reverse, a capstan arranged on one side of the magnetic head and driven by the motor to drive a magnetic tape, and a reproducing rod arranged on the other side of the magnetic head. A normal rotation regeneration relay gear meshed with a gear integrated with the driving rotating body and provided on a normal rotation rod; and a reverse regeneration relay gear meshed with a gear integrated with the driving rotating body and provided on a reversing rod. , The forward rod A control rod that regulates the movement of the rotation rod and the reversing rod and that is linked to the reproduction rod; and a reproduction rod that is provided on a housing surface of the mechanism chassis facing a side on which the magnetic head is disposed. And an operation button connected to the control rod. The control rod releases movement of the forward rotation rod and the reversing rod by pressing the operation button, thereby enabling movement. In response to the rotation of the forward rotation reproduction relay gear or reverse reproduction relay gear to move the forward rotation rod or the reverse rod, the relay gear meshes with the reel base gear by this movement, the first reel base or By communicating with the second reel base, the drive torque of the motor is transmitted to the first reel base or the second reel base. A tape recorder characterized in that it is configured to perform 2. A forward rod provided with a forward relay gear and a reverse rod provided with a reverse relay gear are provided in a direction in which an operation button is pressed, that is, the rotation center of the first reel base and the rotation center of the second reel base. 2. The tape recorder according to claim 1, wherein the tape recorder moves in a direction substantially perpendicular to a line connecting the rotation center.