JPH06105517B2 - Cassette tape recorder - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a cassette tape recorder for recording or reproducing a video signal or a digital signal such as a PCM signal.

Background Art and its Problems At present, as shown in FIGS. 1 and 2, a tape cassette for mounting a magnetic tape on which a digital signal such as a PCM signal in which analog signals such as acoustic signals are exchanged is recorded is proposed. . That is, in FIG. 1 and FIG.
(1) shows a cassette case, and this cassette case (1)
Is composed of a pair of upper half (1a) and lower half (1b) joined together by screwing. The front side of the cassette housing (1) is cut out over a predetermined range to provide an opening (2). (3) is the reel hub (4a)
It is a magnetic tape wound around (4b) and loaded in the cassette casing (1) so that a part thereof faces the opening (2).
(5) shows an opening / closing lid provided on the front side of the cassette casing (1) so as to be rotatable. The opening / closing lid (5) closes the front portion of the casing casing (1) and opens and closes it. When the lid (5) is rotated upward or downward, the front part of the cassette casing (1) is opened and the magnetic tape (3) is exposed in the opening (2). Further, (6a) and (6b) are reel shaft insertion holes provided on the lower surface side of the cassette housing (1), respectively, and the reel shaft insertion holes (6a) (6a) (6a)
The reel shaft is inserted into b), and the reel hub (4a) (4b) is rotationally driven by this reel shaft. Further, (5a) and (5b) are arm portions that pivotally support the opening / closing lid (5) on the cassette housing (1), respectively, and (5c) is an arm portion (5).
a) A concave portion provided by cutting out the central portion of the front end of (5b) in a substantially U shape. Reference numeral (7) is a window portion provided on the upper surface side of the cassette housing (1), and the magnetic tape (3) is wound around the reel hub (4a) (4b) through the window portion (7). The condition is made visible.

When such a tape cassette is not used, the front opening (2) is closed by the opening / closing lid (5), and the magnetic tape (3) is touched by a finger or the like through the opening (2) and dust is It is possible to prevent the reproduction signal from being dropped out due to the adhesion of oil and fat components such as fingerprints or dust without sticking.

When used, the cassette tape recorder T is loaded into the cassette tape recorder T as shown in FIG.
The reel shaft driven by the reel driving device R including the reel base is inserted into the reel shaft insertion holes (6a) and (6b), and the opening / closing lid (5) is opened by the lid rotating member of the cassette tape recorder T. 2) is rotated upward to open,
Predetermined recording (or reproduction) is performed on the magnetic tape (3) exposed in the opening (2).

By the way, when a tape cassette having the opening / closing lid (5) which can be rotated in this way is loaded into the cassette tape recorder T and used, the opening / closing lid (5) is opened so as to open the opening (2) as shown in FIG. The unused space on the top surface of the tape cassette due to the amount of protrusion when rotated upward (hereinafter,
This space is called dead space. ) D occurs, and the cassette tape recorder T becomes large in size by the dead space D.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a cassette tape recorder having a relatively small dead space due to an opening / closing lid.

SUMMARY OF THE INVENTION The present invention relates to a cassette tape recorder in which a tape cassette having an opening / closing lid rotatably attached to a front opening side of a cassette housing is loaded, and the opening / closing lid of the loaded tape cassette is rotated. An opening / closing means for performing an operation is provided, and the opening / closing lid of the tape cassette loaded by the opening / closing means is rotated to the reel stand side to open the front opening of the cassette housing. According to the cassette tape recorder of the present invention, there is an advantage that the dead space by the opening / closing lid can be made relatively small.

Embodiment An embodiment of the cassette tape recorder of the present invention will be described below with reference to FIGS. 4 to 8. 4 to 8, parts corresponding to those in FIGS. 1 to 3 are designated by the same reference numerals, and detailed description thereof will be omitted.

In this example, as shown in FIG. 4, a guide for rotating the opening / closing lid (5) of the tape cassette on the cassette hold portion (8) of the cassette tape recorder T toward the reel driving device R side including the reel stand of the cassette tape recorder T. A groove (9) is provided. That is, the front side in the insertion direction corresponds to the arm portions (5a) (5b) of the tape cassette to be inserted into the left and right side wall portions forming the space (10) into which the tape cassette of the cassette hold portion (8) is inserted. Reel drive device R including stand
A substantially L-shaped guide groove (9) whose curved corner portion is formed into a cylindrical surface is provided on the side. In addition, a mechanism such as a recording / reproducing system for PCM signals will be provided as appropriate.

According to such a cassette tape recorder T, as shown in FIG. 5, a tape cassette whose opening / closing lid (5) closes the opening (2) is inserted into the space (10) of the cassette hold (8). To be done. At this time, the arm portions (5a) (5b) of the tape cassette are guided by the guide groove (9) of the cassette hold portion (8). When the tape cassette is further inserted in this state, the arm portions (5a) and (5b) of the opening / closing lid (5) are aligned with the corners of the guide groove (9) which are formed into a cylindrical surface, as shown in FIG. It is moved or pivoted with respect to the cassette housing (1). In this way, when the tape cassette is inserted into a predetermined position with respect to the cassette hold portion (8), the arm portions (5a) (5b) are guided along the curved guide groove (9) toward the reel drive device R side. As shown in FIG. 7, the opening / closing lid (5) is rotated toward the reel driving device R so as to open the opening (2). The opening / closing lid (5) rotated in this way projects below the lower half (1b) as shown in FIG.
The downwardly projecting portion of b) is located in the space adjacent to the reel driving device R. Therefore, the dead space generated by the rotated opening / closing lid (5) can be made relatively small, and the cassette tape recorder T can be downsized accordingly.

Then, predetermined recording or reproduction is performed on the magnetic tape (3) exposed in the opening (2), and then the opening ( 2) is taken out from the cassette tape recorder T while being closed by the opening / closing lid (5).

As described above, according to the cassette tape recorder T of the present example, in the cassette tape recorder T into which the tape cassette having the rotatable opening / closing lid (5) is loaded, the opening / closing lid (5) of the loaded tape cassette is opened. Since the reel drive device R including the reel base is rotated, the dead space generated by the rotated opening / closing lid (5) can be made relatively small, and the cassette tape recorder T can be correspondingly reduced.
There is an advantage that can be downsized.

9 to 16 show an embodiment of the essential parts of the cassette tape recorder of the present invention. 9 to 16, parts corresponding to those in FIGS. 4 to 8 are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIGS. 9 to 13, one end is provided with a claw (11a) that engages with the recess (5c) of the opening / closing lid (5), and the other end is pivotally supported by the rotation support shaft (12). An arm (11) capable of rotating with respect to the inserting direction of the tape cassette is provided in the cassette holding portion, and when the tape cassette is inserted into the cassette holding portion as shown in FIGS. 10 to 13,
The recess (5c) of the opening / closing lid (5) and the claw (11a) are engaged with each other so that the opening / closing lid (5) is rotated toward the reel stand side when the tape cassette is inserted into a predetermined position of the cassette holding portion. It will be easily understood that the cassette tape recorder of this embodiment can also obtain the same effects as the embodiment shown in FIGS. 4 to 8. In addition, (13) is a position holding spring which is hung over the cassette hold portion and the arm (11), and the arm (11) is held at a predetermined position by the position holding spring (13) and is inserted into the cassette hold portion. The concave portion (5c) of the opening / closing lid (5) of the tape cassette is engaged with the claw (11a).

14 to 16 show a so-called kangaroo pocket, a cassette tape recorder having a slot-in type cassette hold portion, and a lid rotation provided on the cassette hold portion as the tape cassette moves during loading. With the member (14), the arms (5a) (5
b) is pushed up so that the opening / closing lid (5) is rotated toward the reel driving device R including the reel base. In such a cassette tape recorder as well, the above-mentioned FIGS.
It can be easily understood that the same effect as the embodiment shown in the figure can be obtained. The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various other configurations can be adopted without departing from the gist of the present invention.

According to the cassette tape recorder of the present invention, in the cassette tape recorder loaded with the tape cassette having the opening / closing lid rotatably attached to the front opening side of the cassette housing, the loaded tape cassette An opening / closing means for rotating the opening / closing lid is provided, and the opening / closing lid of the tape cassette loaded by the opening / closing means is rotated toward the reel stand side to open the front opening of the cassette housing. Therefore, there is an advantage that the dead space generated by the rotated opening / closing lid can be made relatively small and the cassette tape recorder can be miniaturized accordingly.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a tape cassette having a rotatable opening / closing lid, FIG. 2 is a perspective view showing a state in which the opening / closing lid is rotated so as to open the opening of FIG. 1, and FIG. FIG. 4 is a schematic diagram for explaining the tape cassette shown in FIGS. 1 and 2 when it is loaded in the cassette tape recorder, and FIG. 4 is a perspective view showing an embodiment of the main part of the cassette tape recorder of the present invention. FIG. 6, FIG. 7, FIG. 7 and FIG. 8 are schematic diagrams for explaining the operation process of FIG. 4, respectively, and FIG. 9 is a perspective view showing another embodiment of the main part of the cassette tape recorder of the present invention. , Tenth
FIG. 11, FIG. 12, FIG. 12 and FIG. 13 are schematic diagrams for explaining the operation of FIG. 9, respectively, and FIG. 14, FIG. 15 and FIG. 16 are the main parts of the cassette tape recorder of the present invention, respectively. It is an approximate line figure offered for explanation of other examples. (1) is a cassette case, (1a) and (1b) are upper and lower halves, respectively, (2) is an opening, (3) is a magnetic tape, (5) is an opening / closing lid, (5a) and (5b). ) Are arm parts, (5c) is a concave part, (8) is a cassette hold part,
(9) is a guide groove, (11) is an arm, (11a) is a claw, (1
4) is a lid rotating member, R is a reel driving device including a reel stand, and T is a cassette tape recorder.

Claims (1)

[Claims] 1. A cassette tape recorder in which a tape cassette having an opening / closing lid rotatably attached to a front opening side of a cassette housing is loaded, wherein the opening / closing lid of the loaded tape cassette is rotated. A cassette comprising opening / closing means for performing the opening / closing means, wherein the opening / closing lid of the tape cassette loaded by the opening / closing means is rotated to the reel stand side to open the front opening of the cassette housing. Tape recorder.