JPS58215762A - Cassette tape recorder - Google Patents

Abstract

PURPOSE:To miniaturize a recorder, by releasing the locking of a support plate of an erase head and shifting the erase head from a separating position to a press contact position, when a cassette holder shifts a tape from an elevating position possible for insertion and withdrawal to a descending position possible for playing. CONSTITUTION:The cassette tape recorder 10 is provided with a main body 16 having a base plate 12 and a casing 14, and the cassette holder 20 fitted turnably around a pin 18. A holder 20 is provided with a lock piece 26 prolonged from a lower end and the lock piece 26 is brought into contact with a front end of a support plate 30. The support plate 30 is mounted freely slidably to the base plate 12 and the erase head 36 is fixed on the support plate 30, which is biased toward the arrow A with a torsional spring 40. An ejecting plate 42 is mounted freely slidably to the base plate 12, the plate 42 is provided with a folding section 50 possible for press contact on the lock piece 26, and the plate 42 is biased toward the arrow A with a tension spring 56. Thus, the shift of the head 36 is done in interlocking with the shift of the holder 20, and the recorder 10 is constituted with less number of components, allowing to attain miniaturization.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette tape recorder, and more particularly to a cassette tape recorder having a recorder.

Cassette tape recorders with recorder connections generally include recording and playback heads as well as an erasing head. During recording, the erasing head is moved together with the recording head to a position where it comes into contact with the magnetic tape. Generally, a mechanism for moving the erasing head is provided independently from a mechanism for moving the recording and reproducing heads. Therefore, this type of cassette tape recorder requires an independent mechanism for moving the erasing head, has a large number of parts, has a complicated structure, and is difficult to miniaturize.

This invention was made in view of this point, and its purpose is to be able to move the erasing head without providing an independent mechanism for moving the erasing head, and to achieve a simple configuration and further miniaturization. The purpose of the present invention is to provide a capable cassette cheap recorder.

To achieve the above object, the cassette tape recorder of the present invention includes an erasing head mounted on a support plate movable between a first position and a second digit in the main body of the cassette tape recorder. Fixed. When the support plate is in the first position, the erasing head is located at a position where it can come into contact with the magnetic tape of the cassette tape, and when the support plate is in the second position, it is located at a position away from the cassette tape. To position. In addition, this cassette tape recorder has a cassette holder attached to the main body that can be moved between a raised position and a lowered position, and a cassette holder that is attached to the main body so that it can be moved between an initial position and a pushed-in position. and an eject plate that moves the support plate from the first position to the second position by a t% movement from the push-in position to the push-in position, and then moves the cassette holder from the lowered position to the raised position. In its raised position, the cassette holder has a locking piece that locks the support plate in its second position. Then, when the one-set halter moves from its raised position to its lowered position, the support plate is unlocked and moved from its second position to its first position.

According to this cassette tape recorder, the erasing head is moved in conjunction with the movement of the cassette holder. That is, by moving the eject plate to move the cassette holder from its lowered position to its raised position, the support plate is moved from the first position to the second position. As a result, the erasing head is located at a distance from the cassette tape recorder. While the cassette holder is in the raised position, the support plate is locked in the second position. When the cassette holder is moved from the raised position to the lowered position, the support plate is released from the cursor and moved from the second position to the first position. As a result, the erasing head is located at a position where it can come into contact with the magnetic tape of the cassette tape.

Thus, according to this cassette tape recorder, the erasing head is moved in conjunction with the movement of the cassette holder. Therefore, there is no need to provide an independent mechanism for moving the erasing head, and the number of components of the cassette tape recorder can be reduced, making it possible to further downsize the cassette tape recorder.

An embodiment of the present invention will now be described in detail with reference to the drawings.

As shown in FIG. 1, the cassette tape recorder 10 includes a main body 16 having a substrate 12 and a /-1-sing 14, and a cassette holder 20 rotatably attached to the main body about a pin 18. ing. This cassette holder 20 is biased by a torque spring 22 installed between the base armor 12 and the cassette holder and is located in the lowered position shown in the figure.

When the cassette holder 20 is in the lowered position, the cassette tape 24 housed in the cassette holder is in a position where it can come into contact with a magnetic head (not shown), that is, a position where the tape can be played. In addition, the cassette holder 20
is equipped with a locking piece 26 that is protruded from its lower end,
This lock piece 26 has a lock surface 28 that can come into contact with the front end of a support plate 30 (described later).

The cassette tape recorder 0 includes a support plate 30 swingably attached to a substrate 12.

This support plate 30 has a pair of elongated guide holes 32 and 33, and is slidably attached to the substrate by engaging the single layer 4-id pins 34 and 35 protruding from the substrate 12, respectively. It is being An erasing head 36 is fixed on the support plate 30 and moves integrally with the support plate.

Further, the support plate 30 is biased in the direction of arrow A by a torsion spring 40 wound around a pin 38 provided on the substrate 12. This places the support plate 30 in the first position shown. And il! In the first position of the I-plate 30, the erasing head 36 is in contact with the magnetic tape (not shown) of the cassette tape 24.

Further, an eject plate 42 is slidably attached to the substrate 12. The eject plate 42 has a pair of elongated guide holes 44.45, and these guide holes are supported by a pair of guide pins 46.47 protruding from the substrate 12, so that the eject plate 42 is slidably attached to the substrate. ing. Further, the eject plate 42 has a pressing portion 4 that is in contact with the front end of the support plate 30.
8, and a bent portion 50 that can come into contact with the lock piece 26 of the cassette holder 20. Furthermore, the eject plate 4
2 has a spring locking piece 52 on the lower edge of its rear end, and a tension spring 56 is installed between this spring locking piece and a spring locking piece 54 provided on the base plate 12. As a result, the eject plate 42 is biased in the direction of arrow A by the tension spring 56 and is located at the initial position shown.

As shown in the first (ν1), the cassette holder 20
When the eject plate is pushed in the direction of arrow B from the state where the eject plate 42 is located at its initial position and the support plate 30 is located at its first position, as shown in FIG. The cassette holder is moved to its raised position and the support plate is moved to its second position. When the eject plate 42 is pushed in the direction of arrow B against the biasing force of the tension spring 56, the pressing part 48 of the eject plate pushes against the support plate 30.
and presses the support plate in the direction of arrow B. As a result, the support 1fj, 30 is slid together with the erasing head 36 in the direction of arrow B against the biasing force of the torsion spring 40, and is located at the second position shown in FIG. In the second position of the support plate 30, the erasing head 36 is located at a sufficient distance from the cassette tape 24.

Furthermore, when the eject plate 42 is pushed in the direction of arrow B,
The bent piece 50 of the eject plate contacts the lock piece 26 of the cassette holder 20 and presses the cassette holder via the lock piece. As a result, the cassette holder 20 is rotated clockwise against the biasing force of the toggle spring 22. And when the toggle spring 22 crosses its neutral point, the biasing force of the toggle spring ? 1 acts to rotate the cassette holder 20 clockwise. Therefore, the cassette holder 20
is automatically rotated by toggle spring 22 to the raised position shown in FIG.

In the raised position of the cassette holder 20, the cassette tape 24 can be inserted and removed. In addition, the eject plate 42
After the supporting plate 30 is slid in the direction of arrow B and the erasing head 36 is separated from the cassette tape 24, the bent piece 50 is
It is arranged so as to come into contact with the lock piece 26 of the cassette holder 20. Therefore, the rotational movement of the cassette holder 20 is not hindered by the erasing head 36. Furthermore, when the cassette holder 20 is located in the second position, the lock surface 28 of the lock piece 26 comes into contact with the rear end of the support plate 30, locking the support plate in the second position shown in FIG.

Thereafter, when the pushing force applied to the ejector l-8i 42 is removed, the ejector plate is returned from the pushed position shown in FIG. 2 to the initial position by the biasing force of the tension spring 56.

Then, the cassette holder 20 is pressed and rotated against the biasing force of the toggle spring 22 from the raised position shown in FIG. 2 to the lowered position shown in FIG. 1, and the support plate 30 is moved from the second position to the lowered position. Slide to position 1. When the cassette holder 20 rotates and reaches its lowered position, the lock surface 28 of the lock piece 26 separates from the rear end of the support plate 30 to release the lock. As a result, the support plate 30 slides in the direction of arrow A due to the biasing force of the torsion spring 40, and reaches the first position together with the erasing head 36. Then, the erasing head 36 comes into contact with the magnetic tape (not shown) of the cassette tape 24.

According to the cassette tape recorder 10 configured as described above, by moving the eject plate 42 from the initial position to the pushed-in position, the cassette holder 20 is moved from its lowered position to its raised position, and the erasing head 3
6 is moved to a position where it is separated from the cassette tape 24.

Further, when the cassette holder 20 is moved from its raised position to its lowered position, the erasing head is moved to a position where it can come into contact with the magnetic tape of the cassette tape 24. In this way, according to the cassette tape recorder 10, the erasing head 3
The movement of the erasing head 6 is performed in conjunction with the movement of the cassette holder 20, and there is no need to provide an independent mechanism for moving the erasing head. Therefore, this cassette tape recorder 10 has a small number of component parts, has a simple configuration, and can be further downsized.

According to this cassette tape recorder 10, when the cassette holder 20 is in its lowered position, the erasing head 36 is always located in a position where it comes into contact with the magnetic tape of the cassette tape 24. Therefore, the erase head 3
6 is always in contact with the magnetic tape not only in the recording mode of the cassette tape recorder lθ, but also in the playback, fast forward, and rewind modes. Generally, however, a cassette tape is equipped with a pad for pressing the magnetic tape against a recording/reproducing head, but not a pad for pressing against a magnetic tape erasing head. A multi-purpose erasing head has a lower contact pressure with the magnetic tape than a recording/playback head. Therefore, even if the erasing head is always in contact with the magnetic tape, there is almost no impact on the running properties of the magnetic tape.

[Brief explanation of the drawing]

1 and 2 are partially cutaway side views schematically showing different operating states of a cassette tape recorder according to an embodiment of the present invention. 10...Cassette cheap coater, 16...Main body,
20... Cassette holder, 24... Cassette tape, 26... Lock piece, 30... Support plate, 36...
・Erasing head, 42...Eject plate.

Claims (1)

[Claims] a main body; a support plate attached to the main body so as to be movable between a first position and a second position; and a support plate attached to the support plate and in contact with the magnetic tape of the cassette tape at the first position of the support plate. an erasing head located at a position where the cassette tape can be played, and an erasing head located at a position spaced apart from the cassette tape at the second position of the support plate; a raised position where the cassette tape can be inserted and removed; a cassette holder that is movably attached to the main body and has a locking piece that abuts the support in its raised position to lock the support in a second position; and a cassette holder that moves between an initial position and a pushed-in position. After moving the support plate from the first position to the second position by pressing the support plate and moving the support plate from the first position to the second position, the cassette holder is pressed through the lock piece. an eject plate for moving the cassette holder from the lowered position to the lowered position, and when the cassette holder is moved from the raised position to the lowered position, the support plate is unlocked and moved from the second position to the first position. The cassette tape recorder is moved to the position.