JPH05258413A - Tape recorder - Google Patents

Abstract

PURPOSE:To provide the tape recorder which is small in the number of parts, can assure a sufficient space for pinch rollers and the periphery of a magnetic head and has a shutter opening/closing device for a tape cassette causing less malfunctions. CONSTITUTION:An operating shaft 7 for opening and closing the shutter and a projection 8 for aligning the position in the thickness direction of the tape cassette of this operating shaft 7 to the position of a notch 4 are provided on the shutter opening/closing lever 6. The shutter opening/closing lever 6 is supported by a turning shaft 9 implanted in a holder 5 in such a manner that the lever can be freely turned horizontally and that its front end can be vertically moved. The shutter opening/closing lever 6 is energized clockwise around the turning shaft 9 and is further energized perpendicularly to the insertion direction of the holder 5 and downward by means of a spring 11 detained to a spring detaining part 13 provided on the holder 5. Then, the shutter operating means is constituted in the small space and, therefore, the degree of freedom in design is increased. Further, the malfunctions are eliminated and the high reliability is obtd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette that covers a front opening with a shutter when not in use and opens the shutter when in use, and another tape cassette having a thick front opening. And a tape recorder having a shutter opening / closing device for the tape cassette with a shutter.

[0002]

2. Description of the Related Art In recent years, audio equipment has a tendency toward digital audio. With the development of technology, a tape recorder with high fidelity by digital recording and reproduction has been developed, and R-DAT by a rotary head and S by a fixed head. -D
Two AT schemes have been proposed. Especially S-DAT
Since the fixed head has a structure similar to that of the analog tape recorder, which is widely used at present, and the structure of the head and the tape cassette, it is a system that can record and reproduce both analog and digital signals by one unit. Commercialization of tape recorders is expected.

Currently proposed tape recorders of a system capable of recording and reproducing both analog and digital signals are conventional tapes having a thick portion at a front opening for inserting a magnetic head, a pinch roller and the like. A cassette (an analog compact cassette, hereinafter abbreviated as ACC) and a front opening for inserting a magnetic head, a pinch roller, etc. are covered when not in use, and when in use, the magnetic tape is slid in the running direction or in the opposite direction to the above front Tape cassette with shutter to open the opening (digital compact cassette, hereinafter abbreviated as DCC)
Both of the tape cassettes can be loaded in the same tape recorder, and the conventional ACC can be reproduced while being compatible with a DCC with a shutter.

A conventional tape recorder will be described below with reference to the drawings. FIG. 7 is an internal plan view showing the structure of a conventional tape recorder, FIG. 8 (a) is a plan view of a main part during insertion of a DCC into the tape recorder, and FIG. 8 (b) is a front view of the main part in the same state. FIG. 9 is a plan view of the main part showing a state where the shutter of the DCC is completely opened, and FIG. 10 is a front view of the main part when ACC is applied to a conventional tape recorder.

In FIGS. 7 to 10, 1 is a DCC, 2 is an ACC, 3 is a shutter that covers the front opening of the DCC when not in use, 4 is a notch for opening and closing the shutter of DCC1, 4a is a notch for opening and closing the shutter. Inclined surface of part 4, 105
Reference numeral 106 is a holding member, 106 is a holder for guiding the tape cassette during loading of the tape cassette, and holding the tape cassette at the final loading position.
7 is a slider member that constitutes a moving means for moving the tape cassette into the holder 106 by moving along the guide portion 108, 109 is an arm member for moving the slider member 107, and 110 is a member for driving the arm member 109 to hold the tape cassette in the holder 106. A motor for feeding into the inside, 111 a magnetic head, 112 a pinch roller, 113 an arm-shaped member forming shutter opening / closing means, 114 an urging member for urging the arm-shaped member 113 to rotate clockwise, 115 Is a guide piece which is coupled to the slider member 107 and moves simultaneously with the slider member 107, 115a is an inclined portion of the guide piece 115, 116 is a parallel portion on the guide piece 115 with which the tip of the arm-shaped member 113 abuts, 117 is a shutter operating shaft , 118 is a collar provided on the shutter operating shaft 117, and 119 is a wheel. Arcuate notch on the loaders 106, 1
Reference numeral 20 denotes a shaft lock groove in which the shutter operation shaft 117 pushes the shutter 3 to completely open it in the DCC 1 and enter as a final position.

Next, the operation will be described. 7 to 10, the tape cassette inserted in the holder 106 is shown attached to the slider member 107 in the spool shaft insertion hole when the tape cassette is ACC2 and in the concave portion of the main outer surface when the tape cassette is DCC1. When the slider member 107 is moved by the rotation of the arm member 109 driven by the motor 110, the unengaged protrusion is engaged,
It is sent to the innermost part of the holder 106. The arm-shaped member 113 constituting the shutter opening / closing means is initially the guide piece 1.
Although it is in contact with a parallel portion (a tip portion parallel to the moving direction) 116 of 15, in the process of feeding the tape cassette into the back of the holder 106, along with the movement of the guide piece 115 that moves simultaneously with the slider member 107, The position on the guide piece 115 with which the arm-shaped member 113 abuts is the parallel portion 11.
6 moves to the inclined portion 115a. Tape cassette is D
In the case of CC1, when the position on the guide piece 115 with which the arm-shaped member 113 abuts moves from the parallel portion 116 to the inclined portion 115a, the arm-shaped member 113 starts rotating in the clockwise direction, and this rotation causes the arm. The shutter operating shaft 117 provided on the member 113 moves along the notch 119 of the holder 106, and at the same time, the shutter operating shaft 1
The tip portion of 17 enters into the shutter opening / closing notch 4 of the DCC 1. When the slider member 107 further moves, the tip of the shutter operating shaft 117 moves along the inclined surface 4a of the shutter opening / closing notch 4 of the DCC1 and pushes the end surface of the shutter 3 to prevent the shutter 3 from moving. Only the main body moves, and as a result, the shutter 3 opens parallel to the long side of the DCC 1. When the slider member 107 further moves, the shutter actuating shaft 117 moves along the inclined surface 4a in the shutter opening / closing notch 4 while the arm member 113 further rotates clockwise, and the slider member 107 moves to D
When CC1 is completely drawn into the holder 106, the shutter operating shaft 117 finally has the deepest shaft locking groove 1.
At 20 the shutter 3 is fully opened.

Next, a case where ACC2 is applied to this tape recorder will be described with reference to FIG. Unlike DCC1, ACC2 does not have a notch in the front opening, so
Even if the slider member 107 moves and the arm-shaped member 113 tries to rotate due to the movement, the arm-shaped member 1
The shutter operating shaft 117 attached to 13 is A
Since it abuts against the CC2 front surface, the arm-shaped member 113 hardly rotates, and the shutter operation shaft 117 slides along the ACC2 front surface until the ACC2 is completely retracted into the holder 6.

When the tape cassette is pulled out from the holder 106, the tape cassette is taken out in the reverse order of the operation process described above. Tape cassette is D
In the case of CC1, the shutter operating shaft 117 moves from the shaft locking groove 120 to the inclined surface 4a in the shutter opening / closing notch 4, and finally the shutter operating shaft 117 goes out of the shutter opening / closing notch 4. Shutter 3 closes.

[0009]

However, the conventional shutter opening / closing device for a tape recorder as described above has a large number of parts, and is provided so as to cover one pinch roller 112 in particular, and the pinch roller holding member and the magnetic head 11 are provided.
(1) It was a cause of design restrictions on the shape and arrangement of peripheral parts. If the tape cassette DCC1 is once taken out during insertion into the holder 106 and then inserted again immediately after that, the motor 110 is activated and the arm member 109 starts to rotate and the slider member 107 starts to move, resulting in an arm-like shape. If the contact position of the member 113 has already moved from the parallel portion 116 of the guide piece 115 to the inclined portion 115a of the guide piece 115, the shutter operating shaft 117 may not enter the shutter opening / closing notch 4 of the DCC 1. Had a problem.

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned conventional problems. The number of parts is reduced, a sufficient space is secured around the pinch roller and the magnetic head, and the shutter operation shaft does not malfunction. An object of the present invention is to provide a tape recorder equipped with a shutter opening / closing device that is surely guided to the shutter opening / closing notch of the DCC.

[0011]

In order to achieve the above object, a tape recorder of the present invention comprises a shutter which slides in a tape cassette insertion direction to open and close a front opening for inserting a magnetic head or the like, and the shutter. A tape recorder configured to mount a tape cassette with a shutter, which has a notch with which an operating shaft for opening and closing the tape cassette is provided, and a holder for constraining the tape cassette in a direction perpendicular to the insertion direction. And the operating axis that opens and closes the shutter and the operating axis is urged toward the inside of the holder in a plane perpendicular to the thickness direction of the holder (width direction of the tape when the tape cassette is inserted). Shutter actuating means including an urging means for urging the holder inward in a plane parallel to the shutter actuating hand. A guide portion that contacts the tape cassette and guides the operating shaft to the outside of the holder; and when the operating shaft reaches the surface having the opening portion of the tape cassette, the position of the operating shaft in the tape cassette thickness direction is the position of the cutout portion. And a projection that comes into contact with the tape cassette for matching with.

[0012]

According to the above-mentioned structure of the present invention, the shutter actuating means inserts the tape cassette into the holder, and the guide portion of the shutter actuating means contacts the tape cassette, so that the shutter actuating means moves outward from the holder. Guided, the operating shaft first slides on the outer wall of the tape cassette, and when the tape cassette is inserted into the holder, the projection of the shutter operating means contacts the tape cassette and operates against the downward biasing force. The actuating shaft engages the notch of the tape cassette and abuts the end of the shutter to move the shaft to a height most suitable for engaging the notch provided in the tape cassette. When the tape cassette is further inserted into the holder, the shutter is prevented from moving forward by the actuating shaft, and only the tape cassette body moves forward. As a result, the shutter moves relatively to the tape cassette body, and the front opening is opened. Be released.

[0013]

Embodiments of the tape recorder of the present invention will be described below with reference to the drawings.

1 to 5 show the shutter operating means of the tape recorder according to the embodiment of the present invention, and the operation process of the shutter operating means is shown in the order of the drawing numbers. In each figure, (a) is a plan view and (b) is a front view.
1 to 5, 1 is a tape cassette DCC, 3 is a shutter for opening and closing a front opening of the tape cassette DCC1, 4 is a notch for opening and closing the shutter of the DCC1, and 5 is provided with a shutter operating means and holds the tape cassette. Holder, 6 shutter open / close lever, 7 DCC1
An operating shaft provided on the shutter opening / closing lever 6 for opening the shutter, a projection 8 provided on the shutter opening / closing lever 6 for aligning the position of the operating shaft in the thickness direction of the tape cassette with the position of the notch, 9 A rotation axis of a shutter opening / closing lever 6 implanted in the holder 5, 10 is a guide portion of the shutter opening / closing lever 6, 11 is a spring for urging the shutter opening / closing lever 6, and 12 is a spring 11 for the shutter opening / closing lever 6. Hole for locking, 13 is spring 11
Is a spring engaging portion for engaging the holder 5 with the holder 5.

The structure and operation of the shutter operating means of the tape recorder comprising the above parts will be described below.

First, the shutter opening / closing lever 6 is horizontally rotatable by a rotary shaft 9 embedded in the holder 5 and has its tip vertically movably supported, and a hole 12 and a spring locking portion provided in the holder 5. The shutter opening / closing lever 6 is urged clockwise by the rotation shaft 9 by the spring 11 locked by 13, and further urged downward by the rotation shaft 9.

When the tape cassette DCC1 is inserted into the holder 5 in the direction of the arrow A in the shutter operating means of the tape recorder thus constructed, as shown in FIG. 2A, the shutter opening / closing lever is opened. The corner of the DCC 1 comes into contact with the guide portion 10 of 6 to rotate the shutter opening / closing lever 6 counterclockwise about the rotation shaft 9 against the biasing force of the spring 11. At this time, the shutter open / close lever 6
2 is in a posture of hanging downward as shown in FIG. 2 (b). Subsequently, when the DCC 1 is inserted into the holder 5, as shown in FIGS. 3A and 3B, the shutter opening / closing lever 6 is further rotated, the guide portion 10 of the shutter opening / closing lever 6 is separated from the corner of the DCC 1, and the shutter is opened. The operating shaft 7 of the opening / closing lever 6 abuts on the front surface of the DCC 1 having the opening, and slides on the surface. When the DCC1 is further inserted into the holder 5, the projection 8 of the shutter opening / closing lever 6 comes into contact with the leading portion of the DCC1 entering the holder 5, and the DCC1
Ride on the upper surface of. This state is shown in FIGS. 4 (a) and 4 (b). As is apparent from FIG. 4 (b), the tip of the shutter opening / closing lever 6 is lifted and the operating shaft 7 is moved to DCC1.
The height is such that it can be engaged with the notch 4 for opening and closing the shutter. When the DCC 1 is further inserted into the holder 5, the operating shaft 7 is fitted into the notch 4 for opening and closing the shutter of the DCC 1, and the operating shaft 7 contacts the shutter 3 of the DCC 1. When the DCC 1 advances in the holder 5 as it is, the shutter 3 contacting the operating shaft 7 stops moving, and only the main body of the DCC 1 continues to enter the holder 5. As a result, shutter 3
Moves relative to the DCC1 body and the opening starts to open. Since the actuating shaft 7 is biased in the clockwise direction about the rotating shaft 9, the actuating shaft 7 abuts on the slanted portion 4a extending from the notch 4 of the DCC 1 and slides, and finally the shaft locking groove. Four
Then, the shutter enters the shutter b and finishes opening the shutter 3. This state is shown in FIGS. 5A and 5B, and the insertion of the tape cassette DCC1 into the holder 5 has been completed.

When the tape cassette DCC1 is taken out from the holder 5, the steps of FIGS. 1 to 5 are followed in reverse, and the shutter operating means returns to the state shown in FIG.

6 (a) and 6 (b) show a state in which the tape cassette ACC2 is completely inserted into the holder 5, and the projection 8 of the shutter opening / closing lever 6 rides on the upper surface of the ACC 2 so that it operates. The shaft 7 slides on the upper part of the front surface of the ACC 2 having the opening, and does not fit into the opening.

As described above, according to this embodiment, the shutter actuating means is in direct contact with the tape cassette to surely open the shutter 3 of the DCC 1 and has no effect on the insertion of the ACC 2 although it has a simple structure. It does not hinder the

[0021]

As is apparent from the above embodiments, according to the shutter operating means of the tape recorder of the present invention, since the shutter operating means is constituted by a very small number of parts in a small space, the pinch roller and the magnet are used. A sufficient space is secured around the head, and the degree of freedom in design can be increased. Further, since there is no indirect means for operating the shutter actuating means and the shutter opening / closing lever directly contacts the tape cassette to operate, the tape cassette DCC is once taken out during insertion into the holder, Even when it is inserted again immediately afterward, the operating shaft does not malfunction, and the operating shaft is always guided to the shutter opening / closing notch of the DCC, so high reliability is obtained.

[Brief description of drawings]

FIG. 1A is a plan view of an essential part immediately after the DCC is started to be inserted into a tape recorder of the present invention, and FIG. 1B is a front view of an essential part immediately after an insert of the DCC is started to a tape recorder of the present invention.

FIG. 2A is a plan view of a main part of an initial stage of inserting the DCC into the tape recorder of the present invention. FIG. 2B is a front view of a main part of the initial stage of inserting the DCC into the tape recorder of the present invention.

FIG. 3A is a plan view of a main part of a middle stage of inserting the DCC into the tape recorder of the present invention. FIG. 3B is a front view of a main part of the middle stage of inserting the DCC into the tape recorder of the present invention.

FIG. 4A is a plan view of a main part of the final stage of inserting the DCC into the tape recorder of the present invention. FIG. 4B is a front view of the main part of the final stage of inserting the DCC into the tape recorder of the present invention.

FIG. 5A is a plan view of a main part of the tape recorder of the present invention in which DCC has been inserted. FIG. 5B is a front view of a main part of the tape recorder of the present invention in which DCC has been inserted.

FIG. 6A is a plan view of a main part of the tape recorder of the present invention in a state where the ACC has been inserted. FIG. 6B is a front view of a main part of the tape recorder of the present invention in which the ACC has been inserted.

FIG. 7 is an internal plan view of a conventional tape recorder.

FIG. 8 (a) is a plan view of the main part of the conventional precoder during the insertion of the DCC. (B) is a front view of the main part of the conventional precoder during the insertion of the DCC.

FIG. 9 is a front view of a main portion of the conventional precoder in which DCC is completely inserted.

FIG. 10 is a front view of a main part in the middle of inserting an ACC into a conventional precoder.

[Explanation of symbols]

 1 DCC (Tape Cassette with Shutter) 3 Shutter 4 Cutout 5 Holder 6 Shutter Open / Close Lever (Shutter Actuating Means) 7 Actuating Shaft 8 Protrusion 10 Guide Part 11 Spring (Biasing Means)

Claims (1)

[Claims] 1. A shutter provided with a shutter that slides in a tape cassette insertion direction to open and close a front opening for inserting a magnetic head and the like, and a notch with which an operating shaft for opening and closing the shutter is engaged. A tape recorder configured to mount an attached tape cassette, comprising: a holder for constraining the tape cassette in a direction perpendicular to the insertion direction of the tape cassette; an operating shaft for opening and closing the shutter; and an operating shaft thereof. Shutter actuating means comprising a biasing means for biasing the holder inward in a plane perpendicular to the thickness direction of the holder and further biasing the holder inward in a plane parallel to the holder thickness direction. A shutter actuation means for abutting against the tape cassette to guide the actuating shaft to the outside of the holder; And a projection that abuts against the tape cassette for aligning the position of the operating shaft in the tape cassette thickness direction with the position of the notch when the operating shaft reaches the surface of the tape cassette having the opening. Characteristic tape recorder.