JPS5914953Y2 - magnetic tape cartridge - Google Patents

Description

[Detailed description of the invention] This invention targets a magnetic tape cartridge with a structure in which a front cover is attached to the front of the main body case so that it can be opened and closed, and the method for assembling the front cover to the main case has been improved. be.

That is, in conventional video magnetic tape cartridges, as shown in FIG. 4, a front cover 4 that can be freely opened and closed on the front of the main body case 1 is pivoted to close the main body case 1, and when not in use, the front cover 4 is used to cover the case. The outside of the front surface of the magnetic tape 2 led out to the front is covered and protected.

When the magnetic tape 2 is loaded into the video camera, the front cover 4 is opened upward and the magnetic tape 2 can be pulled out of the case.

However, in order to assemble the front cover 4, pivot holes 11.11 are provided in the left and right side walls 10.10 of the main body case 1, and pins 12.12 are provided protruding from the left and right side pieces 4a, 4a of the front cover 4. , these pins 12 are designed to engage in each pivot hole 11, and the front cover 4 is guided from the front side of the main body case 1, and the left and right side pieces 4a, 4a of the front cover 4 are elastically opened outward. Each pin 12 had to be properly engaged in each pivot hole 11 while being deformed, and this work was rather troublesome.

In addition, a spring for urging the front cover 4 to close is also attached to the pin 12, which complicates the structure and reduces assembly workability.

Further, a large amount of space is required on the front left and right sides of the main body case 1 in order to assemble the front cover 4, which has the disadvantage of reducing the effective space within the main body case.

This invention eliminates such conventional disadvantages and makes the structure and assembly work of assembling the front cover to the main body case extremely easy, and extra space is not required on the main body case side for assembling the front cover. The present invention is intended to provide a magnetic tape cartridge that does not require a magnetic tape cartridge.

The details will be explained according to the drawings.

FIG. 1 shows an example of a video magnetic tape cartridge, in which a pair of tape reels 3, 3 on which magnetic tape 2 is wound is mounted inside a main body case 1 made of plastic, and the front side of the main body case 1 is A front cover 4 is attached to the front cover 4 so that it can be opened and closed freely.

The magnetic tape 2 is led out from one reel 3 to the front of the case and then wound onto the other reel 3. When not in use, the front cover 4 is placed outside the front of the magnetic tape 2 led out to the front of the case. The basic structure is such that the magnetic tape 2 is covered and protected, and when loaded into the video unit, the front cover 4 opens and the magnetic tape 2 can be pulled out from the front of the case.

Now, FIG. 2 shows an example of the front cover assembly 5, in which the center part of the upper edge of the front cover 4 is rotatably supported on the front edge of a plate-shaped mounting piece 6, and the pivot axis thereof is A torsion spring 8 is attached to 7, and the spring 8 urges the front cover 4 to close downward, and the entire structure has a hinge structure.

The front lid assembly 5 is assembled to the main body case 1 by positioning and fitting the mounting piece 6 into the recess 9 formed in the front center portion of the upper surface of the main body case 1.

The mounting piece 6 is preferably made of plastic of the same material as the main body case 1 and is fixed to the recess 9 of the main body case 1 by ultrasonic welding.

Alternatively, the mounting piece 6 is adhesively fixed to the main body case 1 with adhesive.

In such a case, the front cover 4 is attached to the main body case 1 via the mounting piece 6.
The lower end of the front cover 4 is in contact with the front edge of the lower end of the main case 1 as shown in Fig. 3, and the front of the case is closed. and
The outside of the magnetic □ tape 2 is coated.

When loaded into the video camera, the front cover 4 rotates upward against the spring 8, allowing the magnetic tape 2 to be pulled out from the front of the case without any trouble.

In the illustrated example, side pieces 4a are provided at both left and right ends of the front lid 4.

4a are provided in a row, but these side pieces 4a, 4a may be omitted.

Further, the mounting piece 6 may have a horizontal length equal to the horizontal width of the main body case 1 and be fixed across the front edge of the upper surface of the case.

Furthermore, a mechanism for locking the front cover 4 in the closed state and a mechanism for releasing the lock for the front cover 4 are provided in the main body case 1.
If you try to assemble it, it will become even more complete.

As explained above, according to this invention, the front cover 4 can be attached to the main body case 1 by simply fixing the mounting piece 6 of the prepared front cover assembly 5 to the front edge of the upper surface of the main body case 1.
mounted on.

Therefore, the workability of assembling the front cover 4 can be significantly improved.

Moreover, the assembly structure is a simple hinge structure, and there is no need to provide a special space on the main body case side for assembling the front cover, which has the advantage of allowing a large effective space inside the main body case. have

[Brief explanation of drawings]

Fig. 1 is an external perspective view of a magnetic tape cartridge according to the present invention, Fig. 2 is a perspective view showing the entire front cover assembly which is a component of the present invention, and Fig. 3 is an assembled state of the front cover assembly. It is a longitudinal side view of the main part shown. FIG. 4 is an external perspective view of a conventional magnetic tape cartridge. 1...Body case, 2...Magnetic tape, 3...Tape reel, 4...Front lid,
5...Front lid assembly, 6...Mounting piece, 7...Pivot shaft, 8...Spring, 9...
・・・・・・Concavity.

Claims (1)

[Scope of utility model registration request] A magnetic tape in which a front cover 4 which can open and close the front of the main body case 1 is attached to the main body case 1 by forcing the cover to close, and the front cover 4 covers the outside of the front surface of the magnetic tape 2 led out to the front of the case. In the cartridge, a front lid assembly 5 is prepared in which the upper end of the front lid 4 is rotatably supported on the front end of a plate-shaped mounting piece 6, and a spring 8 is attached to the pivot shaft 7. By fixing the mounting piece 6 of the assembly 5 to the front edge of the upper surface of the main body case 1, an assembly structure is formed in which the front cover 4 is biased to close on the front surface of the case via the spring 8. A magnetic tape cartridge featuring