JPH0413805Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a tape cassette, and in particular, a tape-shaped recording medium is wound around a reel and stored in a cassette casing, and the front surface of the casing is This invention relates to a tape cassette in which a tape-shaped recording medium is stretched across a side opening, and a cassette lid covering the stretched tape-shaped recording medium is opened for recording and/or reproduction.

〓Background technology and its problems〓 When recording and reproducing using a tape cassette in which a magnetic tape is wound around a reel and housed in a casing, the head that is in contact with the magnetic tape is separated from the rotating head. If configured, the magnetic tape must be pulled out from the casing or a large opening must be formed in the front side of the magnetic tape, and this opening must be used to make contact between the magnetic tape and the rotating head. Must be.
Therefore, when a rotating head is used, a large opening is formed on the front side of the cassette casing, and the magnetic tape is wound through this opening.

Therefore, in such a tape cassette,
It is necessary to protect the tape-shaped recording medium that is stretched across the front opening of the casing, and a cassette lid that can be opened and closed is usually provided to cover the front opening. When recording and/or reproducing, the cassette lid is opened to allow the magnetic tape to come into contact with the rotating head.

However, in such a tape cassette, if the cassette lid rotates freely when the cassette lid is attached, the assembly operation becomes extremely troublesome, thereby impairing assembly productivity. . Also, depending on the structure of this cassette lid,
There is also the possibility that the cassette lid may become dislodged and fall off the casing halves, thereby making assembly even more difficult.

In other words, in a tape cassette in which the cassette lid is attached to the casing so that it can be opened and closed by assembling the attupashiel and lower shell while the cassette lid is temporarily attached to the attupashiel constituting the casing, the cassette lid is temporarily attached to the attupashiel. If the cassette lid rotates freely, the above assembly operation becomes extremely troublesome. If the assembly operation becomes troublesome, the productivity of cassette assembly will be impaired. Further, during assembly, the temporarily fastened cassette lid may move laterally, that is, in the direction of the rotational axis, and may fall off from the top shell that constitutes the casing, which also makes assembly difficult.

〓Purpose of the invention〓 The present invention was devised in view of the above-mentioned problems.It prevents the cassette lid from rotating freely during assembly, thereby improving the operability of assembly and improving production. The object of the present invention is to provide a tape cassette with improved performance.

〓Summary of the invention〓 According to the present invention, a tape-shaped recording medium is wound around a reel and stored in a cassette casing consisting of at least upper and lower shells. A tape-shaped recording medium is suspended, and this tape-shaped recording medium is covered with a cassette lid that can be opened and closed, and the cassette lid is opened to perform recording and/or reproduction using the tape-shaped recording medium. In a tape cassette designed to perform
A pivoting means for the cassette lid is provided on both side plate parts, and a projecting piece is engaged with a recess formed in at least one shell to which the cassette lid is temporarily fixed, and a protrusion is engaged with a recess formed in at least one shell to which the cassette lid is temporarily fixed. This tape cassette is characterized by restricting rotation beyond a predetermined amount in one direction, and the protrusion and recess prevent the cassette lid from rotating freely during assembly. It was designed to do so.

〓Example〓 The present invention will be described below with reference to an illustrated example.
Figures 1 to 3 are PCMs according to an embodiment of the present invention.
This shows a tape cassette for audio, and this tape cassette has cassette casing 1.
It is equipped with 0. The cassette casing 10 is composed of an upper shell 11 and a lower shell 12, and by combining these, a flat rectangular parallelepiped-shaped cassette casing 10 is assembled. A pair of reels 13 are disposed within the casing 10, and a magnetic tape 14 is wound around these reels 13 with both ends fixedly attached. Magnetic tape 14 is Loisiel 1
The tape is guided by a pair of tape guides 15 formed in the lower shell 12, and is stretched across the bottom opening 16 formed by the notch also formed in the lower shell 12 and the front side opening formed by this bottom opening. Become.

A cassette lid 17 is attached to the front side of the casing 10 consisting of the pair of shells 11 and 12, and the cassette lid 17 covers the opening on the front side of the casing and also covers a pair of tapes. The magnetic tape 14, which is guided and wrapped around the guide 15, is protected. The cassette lid 17 is provided with pins 18 at both ends thereof, and the pins 18 are received in step portions 19 formed on both sides of the lower shell 12, so that the cassette lid 17 is rotatably supported by the casing 10. .

A reel brake 20 is disposed below the top shell 11 of the casing 10, and this brake 20 is connected to a brake spring 21.
The brake piece 22 contacts the reel 13 and performs braking.
The reel brake 20 has protrusions 23 on both ends.
As shown in Figure 2, the cassette lid 1
7 is opened, the reel brake 20 moves forward by the protruding piece 23, and the brake piece 22
is separated from the reel 13, and the brake is released.

A slide plate 24 is slidably attached to the lower side of the lower shell 12 constituting the cassette casing 10, and engaging portions 25 formed on both sides of the slide plate 24 engage the cassette casing 10. It is engaged with engagement grooves 26 formed on both sides of. The slide plate 24 is biased by a spring so as to close the bottom opening 16 of the lower shell 12. That is, a spring hook 27 is provided at the front end of the slide plate 24, and the tip of a spring 28 is locked to this spring hook 27.

Next, the structure of the cassette lid 17 for protecting the magnetic tape 14 that is stretched across the front opening connected to the bottom opening 16 of the tape cassette will be described in detail. First, the structure of the side portion of the top shell 11 that constitutes the cassette casing 10, to which the cassette lid 17 is pivotally attached, will be described. As shown in FIGS. 4 and 5, recesses 31 are formed on both sides of the top shell 11. At the same time, further on the side surface side of this recess 31,
A stepped portion 34 is formed.

On the other hand, on both sides of the cassette lid 17, there is a sixth
As shown in the figure, a side plate portion 29 is integrally provided, and the pivot pin 18 is implanted in the side plate portion 29. A projecting piece 30 is integrally formed on the tip side of this side plate portion 29, and a step portion 32 is formed on the side surface side of this projecting piece 30. The cassette lid 17 provided with the projection 30 is assembled with the top shell 11 as shown in FIG.

In the above configuration, when this tape cassette is installed in a tape player, the cassette lid 17 on the front side is opened, as shown in FIG. The magnetic tape 14 stretched between the pair of tape guides 15 is exposed. At the same time, by opening the cassette lid 17, the protruding piece 23 of the reel brake 20 is pushed forward, the brake piece 22 is separated from the reel 13, and the reel brake is released. Further, as the tape cassette is mounted on the tape player, the slide plate 24 moves backward against the spring 28, and the bottom opening 16 formed in the lower shell 12 is opened.

Therefore, the tape pull-out means is inserted into the area between the pair of tape guides 15 from the bottom opening 16, and the tape pull-out means moves forward to pull out the magnetic tape 14 between the tape guides 15. It is then wrapped around the rotating head drum of the tape player. In this state, as the magnetic head rotates, the magnetic tape 14 runs so as to be fed out from one reel 13 and wound onto the other reel 13, thereby performing high-density recording/and/or reproduction. You will be able to do it.

Furthermore, in this tape cassette, as shown in FIGS. 4 to 7, a projecting piece 30 is formed on the tip side of the side plate portion 29 of the cassette lid 17, and
Recesses 31 are formed on both sides of the top shell 11 constituting the cassette casing 10, and these prevent the cassette lid 17 from freely rotating. That is, when the cassette lid 17 is combined with the top shell 11, the protrusion 30 fits into the recess 31.
It is designed to be stored inside. Since the stepped portion 32 of the projecting piece 30 of this cassette lid 17 comes into contact with the stepped portion 34 of the top shell 11, the cassette lid 17 is opened in the opposite direction to the opening direction of the cassette lid 17 shown by the arrow 36 in FIG. The rotational movement of the cassette lid 17 in the direction indicated by 37 is restricted. This indicates that the cassette lid 17 cannot freely rotate in the direction shown by the arrow 37 with respect to the top shell 11, which makes it easier to handle the assembled two parts 11 and 17 during assembly. , it becomes possible to increase assembly productivity.

In particular, the casing 10 is assembled by joining the upper shell 11 and the lower shell 12 with the cassette lid 17 temporarily attached to the upper shell 11. Through such an assembly operation, the cassette lid 17 can be attached to the casing 10 so as to be openable and closable. If the cassette lid 17 rotates freely while the cassette lid 17 is temporarily attached to the attachment shell 11 during the above-mentioned assembly operation, the above-mentioned assembly operation becomes extremely troublesome, thereby impairing productivity. become. However, as described above, since the protruding piece 30 of the side plate 29 of the cassette lid 17 is received in the recess 31 of the top shell 11, the cassette lid 17 cannot be rotated more than a predetermined amount in the closing direction, which makes the assembly work difficult. This will improve performance and productivity.

Further, even if the cassette lid 17 attempts to move laterally with respect to the shell 11, the vertical surface 33 of the step 32 of the cassette lid 17 comes into contact with the side wall of the recess 31 of the upper shell 11, so that the cassette lid 1
7 will no longer move laterally and fall off from Atupashiel 11. Therefore, during assembly, the temporarily fastened cassette lid 17 does not move laterally, that is, in the axial direction of the pivot pin 18, and does not come off the top shell 11 of the casing 10, making assembly easier. Therefore, the cassette lid 17 is not only restricted from rotating relative to the top shell 11, but also from moving in the lateral direction, making it possible to further improve the ease of assembly. Therefore, with such a configuration, it is possible to provide a tape cassette with excellent productivity.

Next, modifications of the above embodiment will be explained with reference to FIGS. 8 to 11. Note that in this modification, the fourth
The same reference numerals are given to the parts corresponding to those of the above-mentioned embodiment shown in FIGS. 7 to 7, and the explanation of the parts having the same structure will be omitted. The feature of this modification is that, as shown in FIGS. 8 and 9, the shape of the concave portion 31 of the atupashiel 11 is simplified, and the stepped portion 34 of the above embodiment is eliminated. Accordingly, as shown in FIG. 10, the shape of the protruding piece 30 of the cassette lid 17 is also made simple, and the stepped portion 32 of the above embodiment is also eliminated.

Therefore, according to this modification, when the cassette lid 17 is assembled into the top shell 11,
The projecting piece 30 comes to be housed in the recess 31 of the atupashiel 11 as shown in FIG. The function of preventing the cassette lid 17 from rotating in the direction opposite to the opening direction indicated by the arrow 30, that is, in the direction of the arrow 37, is performed by the upper surface 35 of the protrusion 30 and the upper surface of the recess 31. It's getting old. Further, this lateral movement of the cassette lid 17 is prevented by the side surfaces of the protrusion 30 coming into contact with the side walls of the recess 31. Therefore, in this modification, it is possible to achieve the same effects as in the above embodiment, and since the shape is simple, the structure of the mold can also be simplified. .

<Effects of the invention> As described above, the present invention provides a pivoting means for the cassette lid on both side plate parts, and a projecting piece on the tip side of the side plate part on at least one shell to which the cassette lid is temporarily fixed. The cassette lid is engaged with the formed recess to restrict rotation of the cassette lid by more than a predetermined amount in one direction. Therefore, according to the present invention, it is possible to restrict the free rotation of the cassette lid, and while the cassette lid is temporarily fixed to at least one of the upper and lower shells constituting the casing, this shell is attached to the other shell. When assembled with the shell, the cassette lid temporarily attached to one shell is prevented from freely rotating when assembling the casing. This makes it possible to improve the workability of assembling the tape cassette.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of a tape cassette according to an embodiment of the present invention, Fig. 2 is an external perspective view of the tape cassette with the cassette lid open, and Fig. 3 is an exploded perspective view of the tape cassette. , Figure 4 is a perspective view of the main parts of the Atsupashiel, Figure 5 is a perspective view of the main parts of the Atsupashiel seen from a different angle, Figure 6 is an external perspective view of the side plate of the cassette lid, and Figure 7 is the Atsupashiel and the cassette. An external perspective view showing the state of connection with the lid,
Fig. 8 is a perspective view of the main parts of the Atsupashiel according to a modification, Fig. 9 is a perspective view of the main parts of the Atsupashiel seen from another angle, Fig. 10 is an external perspective view of the side plate of the cassette lid, and Fig. 11 is FIG. 3 is an external perspective view showing the state of connection between the cassette lid and the top shell. In addition, in the codes used in the drawings, 10...Cassette casing, 11...Atsupashiel, 13...
...Reel, 14...Magnetic tape, 15...Tape guide, 17...Cassette lid, 18...Pivot pin, 29...Side plate portion, 30...Protrusion piece, 31...Recessed portion.

Claims (1)

[Claims for Utility Model Registration] 1. A tape-shaped recording medium is wound on a reel and stored in a cassette casing consisting of at least upper and lower shells, and the tape-shaped recording medium is guided by a guide means so as to cross the front opening of the casing. A tape-shaped recording medium is suspended, and this tape-shaped recording medium is covered with a cassette lid that can be opened and closed, and the cassette lid is opened to perform recording and/or reproduction using the tape-shaped recording medium. In the tape cassette, pivot means for the cassette lid are provided on both side plate parts, and a protrusion is formed on the tip side of the side plate part, and this protrusion is used as the at least one part to which the cassette lid is temporarily fixed. 1. A tape cassette, characterized in that the tape cassette is engaged with a recess formed in one shell to restrict rotation of the cassette lid in one direction by more than a predetermined amount. 2. The tape cassette according to item 1, wherein movement of the cassette lid in the direction of the rotation axis is restricted by engaging the projecting piece with the recess.