JPH03183088A - Tape cartridge - Google Patents

Abstract

PURPOSE:To obtain a stable temporary assembly state without dropping out an erroneous erasing preventing valve from an erroneous erasing preventing hole by dropping the erroneous erasing preventing valve from the upper direction of the erroneous erasing preventing valve into a lower case and previously assembling the valve over a lock arm on an inner deep wall. CONSTITUTION:On a rear wall 10 of a lower case 1b in a main body case 1, an erroneous erasing preventing hole 11 is recessed so as to go into the inner direction of the case and an erroneous erasing preventing valve 12 is integrated into this preventing hole 11 so as to be slid laterally to right and left over unrecordable and recordable positions. In the erroneous erasing preventing hole 11 of the lower case 1b, an inner deep wall 13 is provided at a position so as to be deviated to the inner direction of the case rather than a rear wall 10a of an upper case 1a. On the other hand, the erroneous erasing preventing valve 12 is assembled so as to freely slid along the inner deep wall 13 over the inner deep wall 13 of the lower case 1b. Thus, the preventing valve 12 is equipped with a main wall 15, to which a detecting member P on a recorder side is operated, and on this main wall 15, a lock arm 16 is provided over the inner deep wall 13. Then, this lock arm 16 is hook-shaped so that a tip 16a is bent downward.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape cartridge provided with means for preventing accidental erasure for identifying whether recording is possible or not.

[Conventional technology]

This type of accidental erasure prevention means includes a non-removable method in which the accidental erasure prevention valve provided on the rear wall of the main body case is broken off, and a switching method in which a slidable accidental erasure prevention valve opens and closes the accidental erasure prevention hole. . The switching type of erroneous erasure prevention means has the advantage of being reusable any number of times by switching the erroneous erasure prevention valve, so the switching type is now replacing the non-removal type.

In this case, an accidental erasure prevention hole is formed in the rear wall of the main body case, which is formed by butting the upper and lower cases together, and extends inward into the case, and an accidental erasure prevention valve is installed in the accidental erasure prevention hole to indicate the recordable and unrecordable positions. It is built in so that it can be slid horizontally and horizontally.

(Problems to be Solved by the Invention) However, the conventional switching type accidental erasure prevention valve is designed to be larger in circumference than the accidental erasure prevention hole provided on the rear wall of the lower case. It does not come out of the accidental erasure prevention hole until the upper case is butted together.

Therefore, in the pre-assembled state where the accidental erasure prevention valve is pre-assembled to the lower case, the accidental erasure prevention valve comes off from the accidental erasure prevention hole in the lower case during the process of covering the lower case with the upper case, and this happens automatically. The reality is that this is a bottleneck in assembly.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a tape cartridge in which an accidental erasure prevention valve can be reliably temporarily assembled in a lower case by effectively utilizing a narrow space, and the assembly can be automated advantageously.

Another object of the present invention is to provide a tape cartridge 7 which has a simple structure and can reliably position and hold the erroneous erasure prevention valve in the recordable position and the unrecordable position.

[Means to solve the problem]

As shown in FIG.
0, an accidental erasure prevention hole 11 is recessed into the case, and an accidental erasure prevention valve 12 is installed in this accidental erasure prevention hole 11.
The present invention assumes that a tape cartridge is incorporated in the tape cartridge so that it can be slid in the left and right directions between a non-recordable position and a recordable position.

Then, an inner back wall 13 is provided in the erroneous erasure prevention hole 11 of the lower case 1b so that it is located at a position that is biased toward the inside of the case than the rear wall lOa of the upper case 1a. On the other hand, the erroneous erasure prevention valve 12 is assembled so as to be slidable along the inner inner wall (3) of the lower case 1b. The main wall 15 has a locking arm 16 that straddles the inner wall 13, and the locking arm 16 has a tip 16.
A is formed into a piece shape that bends downward.

Furthermore, a moderation means is provided between the erroneous erasure prevention valve 12 and the rear wall 10a of the upper case 1a for positioning and holding the erroneous erasure prevention valve 12 in the recordable position and the unrecordable position, respectively. The moderation means is provided on the upper part of the locking arm 16 of the accidental erasure prevention valve 12.
An elastic arm 20 that is elastically deformable in a direction perpendicular to the sliding direction of the accidental erasure prevention valve 12 is integrally formed, and an accidental erasure prevention valve is provided at the tip of the elastic arm 20 and the inner surface of the rear wall 10a of the upper case 1a. It is required that a moderation convex portion 21 and a moderation concave portion 23 that engage and disengage from each other as a result of the sliding movement of the moderation section 12 are respectively provided.

[Effect]

The accidental erasure prevention valve 12 is pre-assembled by dropping it into the lower case 1b from above the accidental erasure prevention hole 11 and placing the locking arm 16 across the inner inner wall 13.

This provides a stable temporary assembly state in which the erroneous erasure prevention valve 12 does not come out of the erroneous erasure prevention hole 11.

Furthermore, the accidental erasure prevention valve 12 is reliably stopped and held at the recordable position and the recordable position, respectively, by the engagement between the moderation convex part 21 and the moderation concave part 23.

〔Effect of the invention〕

The accidental erasure prevention valve 12 of the present invention is arranged so that its locking arm 16 is straddled over the two ends of the inner inner wall 13 of the lower case ↓b.
It can be slid freely along the Therefore, the accidental erasure prevention valve 12
It can be easily and stably temporarily assembled into the narrow accidental erasure prevention hole 11 of the upper case 1b by dropping it from above, and it can be temporarily assembled from the accidental erasure prevention hole 11 through the accidental erasure prevention hole 11 to the rear of the case due to vibration etc. on the assembly line until the upper case 1a is covered. Falling down on my side, I feel helpless.

As a result, the assembly of the erroneous erasure prevention j↑12 to the lower case 11) can be carried out efficiently through the process and the covering process of the upper case 1a, making it possible to effectively mechanize the assembly. We can make it happen.

An elastic arm 20 is provided at the tenth part of the locking arm 16 of the accidental erasure prevention valve 12, and the tip of the elastic arm 20 and the rear wall 1 of the case 1a are connected to each other.
．． By utilizing the inner surface of Oa, a moderation convex portion 21 and a moderation concave portion 23 are provided between the two, which engage and disengage with each other as the accidental erasure prevention valve 12 slides, so the structure is simple. The erroneous erasure prevention valve 12 can be reliably switched to and held at the recordable position and the recordable position by sliding the valve 12.

〔Example〕

The figure shows an example of a V) (S type tape cartridge, and 1 is a main body case. This main body case 1 is formed by butting and joining plastic -L lower cases 1a and 1b.

A feeding tape reel 2 and a take-up tape reel 3 are arranged on the left and right sides inside the main body case 1. The tape 4 drawn out from the feeding tape reel 2 is transferred to the take-up tape reel 3 via guide rollers 5 provided on the left and right sides of the front end of the space.
It is wound up. A hole (not shown) for tape loading is recessed between both guides 5 and 5, and the front outer side of the tape 4 that crosses this gap is the main body. When not in use, it is covered by the front lid 7 of the case ↓ (=j).

The rear wall 10 of the main body case 1 is the lower case 1a! The rear walls 10a and 10b of the main body case l are butted against each other, and the rear wall 10 of the main body case l has a sliding type accidental erasure prevention means 9 at the left corner.

The erroneous erasure prevention means 9 includes an erroneous erasure prevention hole 1 recessed in the rear wall 10b of the lower case 1b.
1, set the accidental erasure prevention valve 12 to the recording (recording) disabled position and the recording (
It is built in so that it can be slid horizontally and horizontally across the recording possible position.

In FIGS. 5 and 6, the erroneous erasure prevention hole 11 is recessed in the left end side of the rear wall 10b of the lower case 1b and extends into the case. It is formed into a horizontally long rectangular shape when viewed from the front, including the setting position of the erasure prevention valve and extending leftward from this setting position.

At the inner depth of the erroneous erasure prevention hole 11, an inner inner wall 13 partitioned from the tape reel storage area is formed integrally with the rear wall 10b. As shown in Fig. 1, the inner back wall 13 is set in a position that is biased inward from the rear wall 10a of the upper case 1a located above it, and the upper case 1a is placed over the lower case 1b. The lower end of the rear wall 10a on the rear side of the upper case and the upper end of the inner inner wall I3 face each other in a staggered manner, with a gap 14 being formed between the upper and lower sides.

In FIG. 1 and FIG. 6, the erroneous erasure prevention valve (2 is a plastic molded product, and a vertical main wall 15 that prevents the lever-type detection member P on the recorder side from entering the erroneous erasure prevention hole 1I). has a tip 1 on the upper end side of the upper wall 15.
A locking arm 16 in the shape of a piece, 6a bent downward, extends integrally toward the inside of the case. The main wall 15 has a rectangular shape that is approximately the same size as a break-and-remove type accidental erasure prevention valve in a conventional tape cartridge.

When assembling the accidental erasure prevention valve 12, it is first assembled into the lower case 1b along with necessary parts such as the tape reels 2 and 3 and the guide roller 5. At this time, the erroneous erasure prevention valve 12 is dropped into the erroneous erasure prevention hole 11 from above. This is the 8th
As shown in FIG. 9 and FIG.
When straddled over the upper end, the inner surface side of the main wall 15 is the inner back wall 13.
The outer surface of the main wall 15 is in contact with the outer surface of the lower case rear wall 10.
It is temporarily assembled flush with the outer surface of b.

Next, when the upper case 1a is placed over the lower case 1b, as shown in FIG.
The root portion of the locking arm 16 fits into the gap 14 formed between the rear wall 10a and the upper end with a slight gap, and the lower end of the rear wall 10a fits directly above the main wall 15 with a slight gap. A state of convergence is obtained, which is located at Therefore, the accidental erasure prevention valve 1
2, the sliding movement is light and a preferable fit state is obtained in which the slide does not come up from the erroneous erasure prevention hole 11.

In addition, in the accidental erasure prevention valve 12, the outer surface of the main wall 15 is the rear wall 10a of the upper and lower cases 1a1b within the accidental erasure prevention hole 12.
Since it is flush with the outer surface of the recorder 10b, even when it is loaded into the recorder, the detecting member P on the recorder side does not slide smoothly on the outer surface of the recorder, thereby ensuring a reliable detecting operation as to whether or not recording is possible.

The accidental erasure prevention valve 12 moves its locking arm 16 along the inner back wall 13 in the left-right and lateral directions to a recordable position on the right end side of the accidental erasure prevention hole 11 (solid line state in FIG. 3).
and the unrecordable position on the left side (as shown by the imaginary line in Figure 3)
You can switch between.

At this time, the locking arm 16 of the accidental erasure prevention valve 12 is connected to the inner back wall 13.
Since it straddles the upper end of the erroneous erasure prevention hole 11, it is prevented from falling off toward the outer surface of the opening of the erroneous erasure prevention hole 11. However, when the straddle depth is small, the accidental erasure prevention valve 12
There is a possibility that the lower end of 5 may be tilted in the direction of protruding from the bottom of the erroneous erasure prevention hole 11. In order to reliably prevent such tilting of the accidental erasure prevention valve 12 and more reliably maintain its vertical position,
In the figure, a groove 18 is provided in the bottom 17 of the accidental erasure prevention hole 11 in the left-right direction, and a convex portion 19 provided on the inside of the lower end of the main wall 15 of the accidental erasure prevention valve 12 is fitted into the groove 18. It is.

In this case, if the locking arm 16 is suspended from the inner back wall 13 so as to form a slight gap between the protrusion 19 of the accidental erasure prevention valve 12 and the bottom of the groove 18, accidental erasure can be prevented. This allows the valve 12 to be slid easily.

Positioning and holding means for holding the accidental erasure prevention valve 12 at each switching position is provided between the accidental erasure prevention valve 12 and the inner surface of the rear wall 10a on the upper case 1a side. As shown in FIGS. 6 and 8, this positioning and holding means is formed by integrally forming an elastic arm 20 extending rightward from the upper left end of the locking arm 16 of the accidental erasure prevention valve 12. The elastic arm 20 is the left end locking arm 1
6 and allows elastic deformation in a direction perpendicular to the sliding direction using the base as a fulcrum. A moderation convex portion 21 is provided at the tip of the elastic arm 20. On the other hand, as shown in FIGS. 4 and 7, a pair of left and right vertical ribs 22 are provided on the inner surface of the rear wall 10a of the upper case 1a, and a moderation recess 23 is provided on one side of each rib 22. Form. When the accidental erasure prevention valve 12 is completely switched to the unrecordable position and the recordable position, the moderation convex portion 21 engages with each moderation concave portion 23, allowing the accidental erasure prevention valve 12 to move freely horizontally. Regulate movement. The recessed portion between the left and right vertical ribs 22 may be filled in.

When the accidental erasure prevention valve 12 is switched to the recordable position, as shown in FIGS. An operating groove 25 is formed between which a fingertip or the like can fit, which abuts against the regulating protrusion 24 .

Furthermore, even when the accidental erasure prevention valve 12 is switched to the unrecordable position as shown by the imaginary line in FIG. An operation a27 is formed in which a fingertip or the like is inserted between the fingertips and the like by coming into contact with the provided regulating convex portions 26. Thus, even when the outer surface of the main wall 15 of the accidental erasure prevention valve 12 is flush with the outer surface of the case rear wall 10, the sliding operation of the accidental erasure prevention valve 12 can be performed by hooking your fingertips on the operation grooves 25 and 27. Made it easy to do.

As shown in FIGS. 1 and 6, a coupling boss 28 is provided protruding from the left corner inside the lower case Ib. A coupling boss 29 protruding downward from the inner surface of the upper case 1a is fitted into the coupling boss 28, and a screw 30 is inserted from the bottom side of the lower case 1b.
By screwing into the connecting bosses 28 and 29, the left corner portions of the upper and lower cases 1a and 1b are integrally connected.

In FIG. 1, since the inner inner wall I3 is formed in a narrow place of the lower case 1b, its wall thickness is naturally restricted and tends to be thin, and the supporting function of the accidental erasure prevention valve 12 is likely to be lost. Therefore, even if the inner back wall 13 is thin, in order to prevent it from tilting and deforming inward of the case, the base of the coupling post 28 is connected to the inner back wall 13 by a connection part 31 that is integrally formed therewith. Formed. A sliding space 32 is formed above the connecting portion 31 between the inner surface of the inner inner wall 13 and the coupling boss 28, which allows the accidental erasure prevention valve 12 to slide to the unrecordable position.

[Another example]

In the accidental erasure prevention valve 12, the locking arm 16 is located at the tip 1 of the locking arm 16.
6a is formed to be longer downward than in the above embodiment, and the inner back wall 13 is
By increasing the straddling depth, the engagement structure between the protrusion 19 of the main wall 15 and the groove 18 of the bottom can be omitted.

In the moderation means of the accidental erasure prevention valve 12, contrary to the above embodiment, the moderation convex portion 21 may be provided on the inner surface of the rear wall LOa of the upper case 1a, and the moderation concave portion 23 may be provided at the tip of the elastic arm 2O. can.

[Brief explanation of drawings]

Figures 1 to 9 show an embodiment of the tape cartridge according to the present invention, Figure 1 is a longitudinal cross-sectional side view of the main parts with the accidental erasure prevention valve installed, and Figure 2 is the overall appearance. Perspective view, Figure 3 is a front view of the accidental erasure prevention valve seen from the outside of the case, Figure 4 is a bottom view of a portion of the inner surface of the upper case, and Figure 5 is a plan view of the accidental erasure prevention hole in the lower case. , Fig. 6 is an exploded perspective view, Fig. 7 is a perspective view of a part of the upper case viewed from below, Fig. 8 is a front view with the accidental erasure prevention valve installed in the lower case, and Fig. 9 is the 9 is a sectional view taken along the line IX-IX in FIG. 8. FIG. 1...Body case, 1a...Top case, ■b...Bottom case, 10...Back wall of main case, 10a...Back of top case Wall, 10b... Rear wall of lower case, 11... Accidental erasure prevention hole, 12... Accidental erasure prevention valve, 13... Inner back wall, 15... ... Main wall, 16 ... Locking arm, 20 ... Elastic arm, 21 ... Convex part for moderation, 23 ... Concave part for moderation, P ... ...Detection member. Inventor: Yamanaka Figure 2 Lower case Figure 4 Figure 7

Claims (1)

[Claims] 1. Rear wall (10b) of the lower case (1b) of the main case (1) formed by butting together the upper and lower cases (1a) and (1b)
An accidental erasure prevention hole (11) is recessed into the inside of the case, and an accidental erasure prevention valve (12) is installed in the accidental erasure prevention hole (11) horizontally across the recordable position and the unrecordable position. In a tape cartridge that is built in so that it can be slid in the direction, the inner back wall (1
3) is located inward of the case from the rear wall (10a) of the upper case (1a), and the accidental erasure prevention valve (12) is connected to the detection member (P) on the recorder side.
It has a main wall (15) on which the main wall (15) acts, and a hook-shaped locking arm (16) that projects inward from the main wall (15) and has a downwardly bent tip (16a), Accidental erasure prevention valve (1
The locking arm (16) of 2) is slidable along the inner inner wall (13) by straddling the upper end of the inner inner wall (13), and is able to slide freely along the inner inner wall (13), and the locking arm (16) straddles the upper end of the inner inner wall (13). ) rear wall (10
A moderation means is provided between the inner surface of the accidental erasure prevention valve (12) and the inner surface of the accidental erasure prevention valve (12) for positioning and holding the accidental erasure prevention valve (12) in the recordable position and the recordable position, respectively. Locking arm (16
) is integrally formed with an elastic arm (20) that is elastically deformable in a direction orthogonal to the sliding direction of the accidental erasure prevention valve (12), and the tip of the elastic arm (20) and the upper case (
10) An accidental erasure prevention valve (1) is installed on the inner surface of the rear wall (10a).
2) The moderation convex parts (
21) and a moderation recess (23).