JP3127639B2 - Cassette tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette tape recorder in which a head is inserted into a tape cassette to perform a recording / reproducing operation.

[0002]

2. Description of the Related Art Conventionally, in a cassette tape recorder of this type, a head is inserted into a tape cassette to perform a recording / reproducing operation. Therefore, if the tape cassette is erroneously ejected during this operation, the tape becomes a tape of the head. Damage, such as being caught and broken by the guide,
To prevent the head from being twisted by the half of the tape cassette and being damaged, an eject prevention member was added so that the eject operation was not performed during the recording / reproducing operation. There is a device provided with a mechanism for passing through a device.

Further, a mechanism is provided in which a switch is attached to a lock mechanism component such as a lock plate or an eject button for locking a cassette holder for inserting and holding a tape cassette, and a stop operation is reliably performed before the cassette holder is opened. There is also.

[0004]

The mechanism provided in the cassette tape recorder for preventing the tape cassette from being ejected during the recording / reproducing operation has a large number of components and is operated in association with other operating members. Because of the configuration, the configuration is complicated and the cost is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cassette tape recorder capable of reliably preventing a tape or the like from being damaged by an eject operation during a recording / reproducing operation with a simple configuration. I do.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a head and a hub drive shaft which are relatively movably arranged, and performs recording and reproducing operations with the head inserted in a tape cassette. In a cassette tape recorder constructed as described above, a head substrate provided with a head and moved in a direction in which the head is inserted into the tape cassette and a direction in which the head escapes from the tape cassette; And a cassette support member that engages with the tape cassette from the direction in which the head is inserted into the tape cassette with the head being inserted into the tape cassette.

In this configuration, the cassette supporting member includes
It is formed in a substantially L shape, and a pair is provided on the head substrate with the head interposed therebetween.

In this configuration, the recorder further includes a detecting means for detecting whether or not the tape cassette is mounted, and a head substrate inserted into the tape cassette based on a detection result from the detecting means. There is provided moving means for moving the head in a direction in which the head escapes from the tape cassette.

[0009]

According to the present invention, when the tape cassette is tilted due to the head being inserted and being erroneously ejected during the recording / reproducing operation, the tape cassette becomes tilted.
Engagement with the cassette supporting member prevents further tilting, that is, locking at a certain angle prevents damage to the tape and the head.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cassette tape recorder according to the present invention will be described below with reference to the drawings. 1 in the figure
Denotes a transport of the tape cassette, 2 denotes a supply-side hub drive shaft, and 3 denotes a take-up-side hub drive shaft which is supported on the chassis 4 side.

Reference numeral 5 denotes a recording / reproducing head, which is a head substrate 6 disposed on the chassis 4 so as to be movable in the directions of the two hub driving shafts 2 and 3.
An erasing head 7 and a pinch roller 8 are also mounted on the head substrate 6, and tape guides 9 and 10 are fixed to side surfaces of the recording / reproducing head 5 and the erasing head 7, respectively.

On the chassis 4 side, both hub drive shafts 2,
3, a capstan 11 and a cassette positioning pin 12 are provided. A pinch roller 8 is rolled on the capstan 11 by the movement of the head substrate 6, and the capstan 11 is located behind the hub drive shafts 2, 3. A cassette detection switch 13 is provided at the position.
The ON / OFF of 3 causes the movement drive circuit of the head substrate 6 to operate, and the head substrate 6 is moved.

In this embodiment, substantially L-shaped cassette support members 14 and 15 to be engaged with the front portion of the tape cassette are provided on the head substrate 6 with the recording / reproducing head 5 interposed therebetween. It is.

The cassette tape recorder of the present embodiment configured as described above uses the tape cassette C for transport 1
When the hub drive shafts 2 and 3 are fitted and inserted into the reel hub, the capstan 11 and the positioning pin 12 are inserted through predetermined through holes, and the cassette detection switch 13 is pressed and tilted in this state. Is turned on and the loading of the tape cassette C is confirmed.

When the cassette detection switch 13 is turned on, the head substrate 6 is moved forward and the recording / reproducing head 5 is moved.
And the erasing head 7 is inserted into the front window from the front of the cassette C together with the pinch roller 8 and abuts on the tape, and the tape guides 9 and 10 on the side of the erasing head 7 are supported by the tape T from above and below. And a pinch roller 8
Is pressed against the capstan 11 with the tape interposed.

In this state, the cassette supporting members 14 and 15 provided on the head substrate 6 are positioned correspondingly from the front side to the front side of the tape cassette C (see FIG. 2).

By loading or reproducing the tape cassette C in the transport 1 and the recording / reproducing head 5 or the like is inserted in this way, the hub drive shaft 3 and the capstan 11 on the winding side are moved. When driven, the tape runs to perform recording or reproduction.

After the recording or reproduction is completed, a stop signal is output from a control circuit (not shown) having a microcomputer by turning off the cassette detection switch 13, and the head substrate 6 is returned (retracted) by the stop signal. As a result, the recording / reproducing head 5 and the like escape from the front window of the tape cassette C, and the cassette supporting members 14 and 15 move away from the front of the tape cassette C so that the tape cassette C can be taken out from the transport 1. (See FIG. 3).

Further, when the tape cassette C is erroneously ejected during the recording or reproducing operation, that is, when the ejecting operation is performed, the tape cassette C is kept in a cassette holder (shown in the figure) with the front part corresponding to the cassette supporting members 14 and 15. The tape cassette C is tilted by the cassette support member 1.
The upper surfaces of the front portions are brought into abutment engagement with the tips of the 4, 15 and are not tilted any more, that is, they are locked at a fixed angle, so that the tape guides 9 and 10 are strongly attached to the tape. Damage to the tape, breakage, damage to the head, etc. are prevented without hitting (see FIG. 4).

In this state, the back surface of the tape cassette C is released from the cassette detection switch 13 to release the pressing. When the switch 13 is turned off, the head substrate 6 is moved backward as shown in FIG. The recording / reproducing head 5 escapes from the tape cassette C.
The tape cassette C is further tilted by the cassette holder, and can be taken out of the transport 1 in the same manner as in the normal ejecting operation described above.

In this operation, when the cassette detection switch 13 is turned off, the rotation of the hub drive shaft 3 and the capstan 11 is stopped.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and can be variously modified without departing from the gist of the present invention.

For example, the head substrate 6 may be configured to be moved by a recording / reproducing operation without being moved by the ON / OFF operation of the cassette detection switch 13, and the cassette supporting members 14, 15 may be configured to be moved by the head. Any member that can move in conjunction with the recording / reproducing head 5 or the like without being disposed on the substrate 6 can be installed.

[0024]

As described above, according to the present invention, the cassette supporting member which engages with the tape cassette from the direction in which the head is inserted into the tape cassette with the head inserted into the tape cassette is provided. Even if the ejecting operation is mistakenly performed during the recording and reproducing operations, the tape cassette is locked at a fixed tilt angle to prevent the tape and the head from being damaged.

Further, since the eject malfunction preventing mechanism has a simple structure in which only a cassette supporting member is provided, the number of parts is reduced and the cost can be reduced as compared with the conventional mechanism.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an example of a cassette tape recorder according to the present invention.

FIG. 2 is a schematic diagram illustrating a recording / reproducing state.

FIG. 3 is a schematic explanatory view of an ejected state.

FIG. 4 is a schematic explanatory diagram of a malfunction ejection state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transport 2, 3 Hub drive shaft 4 Chassis 5 Recording / playback head 6 Head board 7 Erasing head 9, 10 Tape guide 13 Cassette detection switch 14, 15 Cassette support member C Tape cassette T Tape

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroyuki Sato 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (58) Field surveyed (Int. Cl. ⁷ , DB name) G11B 15 / 675

Claims (3)

(57) [Claims] 1. A cassette tape recorder in which a head and a hub drive shaft are relatively movably arranged, and a recording and reproducing operation is performed in a state where the head is inserted into a tape cassette, wherein the head is provided. A head substrate which is moved in a direction in which the head is inserted into the tape cassette and in a direction in which the head escapes from the tape cassette; provided in the head substrate, in a state where the head is inserted in the tape cassette A cassette tape recorder including a cassette support member that engages with the tape cassette from a direction in which the head is inserted into the tape cassette. 2. The cassette tape recorder according to claim 1, wherein said cassette support member is formed in a substantially L-shape, and a pair is provided on said head substrate with said head interposed therebetween. 3. The recording apparatus further comprises: detecting means for detecting whether or not the tape cassette is mounted, and a direction in which the head is inserted into the tape cassette based on a detection result from the detecting means. 2. A cassette tape recorder according to claim 1, further comprising a moving means for moving said head in a direction in which said head is released from said tape cassette.