JPH0419644Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a tape cartridge that has been improved so that it is easier to incorporate the tape into the cartridge case.

[Conventional technology]

Figure 4 shows a standard video tape cartridge, with upper and lower plastic cases 1
Tape reels 3, 3 on which the tape 2 is wound are installed on the left and right sides of the inside of the cartridge case 1, which is formed by joining a and 1b in a butt shape. It is formed in an open shape. The tape 2 is led out from one tape reel 3 through the tape drawer opening 4 on the same side to the front side of the case, and then is wound onto the other tape reel 3 through the tape drawer opening 4 on the other side. The tape 2 led out to the front surface of the cartridge case 1 is protected by a front cover 5 attached to the front surface so as to be openable and closable.

Each tape drawer opening 4 has a tape guide member 6 as shown in FIG.
A tape running path S is defined between the front ends 7a and 8a of the side walls 7 and 8 of the tape guide member 6.

However, conventionally, as shown in FIG. 7, the front ends 7a and 8a of the side walls of the upper and lower cases 1a and 1b are abutted against each other at the same position, and as a result, the front cover 5 is closed and the tape 2 is closed as shown in FIG. Even if the tape 2 is slack, it is prevented from protruding as shown by the dotted line in the figure. In this way, the tape guide member 6
The presence of a wall member that restricts the tape 2 from protruding laterally and outwardly is functionally necessary.

[Problem that the invention attempts to solve]

However, in order to incorporate tape 2, upper case 1
Before a and the lower case 1b are butted together, it will be assembled into the lower case 1b in advance, but the lower case 1b
The width of the tape running path S provided between the front end 8a of the side wall and the tape guide member 6 is too narrow as shown in FIG. The tape 2 was likely to be damaged by contacting the front end 8a of the side wall.

From this point of view, this invention makes it easy to assemble the tape 2 to the cartridge case 1 along a predetermined tape path at the tape drawer opening 4, and after assembling the tape 2 at the tape drawer opening 4. To obtain a tape cartridge which prevents tape from protruding outside.

[Means for solving problems]

The present invention has a tape guide member 6 in a tape drawer opening 4 of a cartridge case 1 formed by joining upper and lower cases 1a and 1b in a butt shape,
The front ends 7a and 8a of the side walls 7 and 8 of the upper and lower cases 1a and 1b that are butted against each other and the tape guide member 6
In a tape cartridge whose tape running path is a space formed between The front end 8a of the side wall 8 of the lower case 1b is located further back than the rear end of the tape guide member 6.

[Effect of idea]

According to the present invention configured as described above, the front end 8a of the side wall 8 of the lower case 1b is displaced rearward from the front end 7a of the side wall 7 of the upper case 1a, and furthermore, the front end 8a of the side wall 8 of the lower case 1b is displaced from the rear end of the tape guide member 6. is located further rearward, so that the tape running path S formed between the front end 8a of the side wall and the tape guide member 6
is much wider than the conventional example, and the tape 2 can be easily inserted and guided into the tape running path S without damaging the tape 2.

On the other hand, after the tape 2 is assembled to the lower case 1b and the upper case 1a is butted against the lower case 1b, the front end 7a of the side wall 7 of the upper case 1a protrudes forward. This means that the protrusion in the opposite direction can be restricted, and the protective function of the tape 2 can be maintained as before.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings. In FIGS. 1 to 3, an upper case 1a
The front end 7a of the side wall 7 of the lower case 1b remains in the conventional position, and the front end 8a of the side wall 8 of the lower case 1b is set to a position shifted rearward from the side wall front end 7a of the upper case 1a, and when viewed from the side, the upper and lower cases 1a, 1b
As shown in FIG. 3, the side walls 7 and 8 of the main body are arranged in a stepped butt configuration.

In this case, the width of the tape running path S between the side wall front end 8a and the tape guide member 6 is wider than before by the amount by which the side wall front end 8a of the lower case 1b is shifted rearward. Therefore, when assembling the tape, the tape 2 is easily inserted between the front end 8a of the side wall of the lower case 1b and the tape guide member 6, and the tape 2 is not brought into contact with the front end 8a of the side wall, which may damage the tape 2. The risk has been reduced. When the upper case 1a is butted against the lower case 1b and joined together, the front end 7a of the side wall of the upper case 1a restricts the tape 2 from protruding laterally, so that the tape protection function can be maintained as before.

In the above embodiment, the upper case 1a is replaced by the lower case 1.
There is a risk that the tape 2 may be damaged by the front end 7a of the side wall of the upper case 1a when it is assembled into the upper case 1a, but this can be easily avoided by keeping the tape 2 in a tensioned state after being assembled.

Note that another tape guide member 9 is provided upright inside the tape guide member 6, and a tape presser 10 is elastically abutted against this guide member 9 with the tape 2 sandwiched therebetween. This tape presser 10
is always attached to the lower case 1b side after the tape 2 is attached, but this attachment may be done before the tape 2 is attached.

Incidentally, although the upper case 1a and the lower case 1b are referred to for convenience of explanation, in the example shown, the lower case 1 is referred to as the upper case 1a after the tape 2 is attached to the upper case 1a side.
In the case of adopting the form of covering the upper and lower cases 1a and 1b, the front and back positions of the side wall front ends 7a and 8a of the upper and lower cases 1a and 1b are set opposite to the illustrated example.

The tape 2 is generally expected to be a magnetic tape with a transparent leader tape or trailer tape connected to both ends, but it may also be a cleaning tape for cleaning the head on the player side.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the tape cartridge according to the present invention, FIG. 1 is a plan view of the main part, and FIG. 2 is a partial plan view of FIG. 1 explaining the tape running path. 3 is a side view, and FIG. 4 is a partially cutaway plan view of the tape cartridge to which the present invention is directed. 5 to 7 show a conventional example, FIG. 5 is a plan view of the main part, FIG. 6 is a partial plan view of FIG. 5 explaining the tape running route, and FIG. 7 is a side view. be. DESCRIPTION OF SYMBOLS 1... Cartridge case, 1a... Upper case, 1b... Lower case, 4... Tape drawer opening, 6... Tape guide member, 7... Side wall of upper case, 7a... Side wall of upper case. Front end, 8... Side wall of the lower case, 8a... Front end of the side wall of the lower case.

Claims (1)

[Claims for Utility Model Registration] A tape guide member 6 is provided in the tape drawer opening 4 of the cartridge case 1, which is formed by joining the upper and lower cases 1a and 1b in a butted manner, and the upper and lower cases 1a and 1b are butted against each other. In a tape cartridge whose tape running path is the space formed between the front ends 7a, 8a of the side walls 7, 8 and the tape guide member 6, the position of the front end 7a of the side wall 7 of the upper case 1a is lower than the position of the lower case 1b. The tape cartridge is characterized in that the position of the front end 8a of the side wall 8 of the lower case 1b is shifted rearward, and the front end 8a of the side wall 8 of the lower case 1b is located further back than the rear end of the tape guide member 6.