JPH117748A - Single reel type magnetic tape cartridge - Google Patents

Abstract

(57) [Problem] To improve a lock mechanism of a lid for opening and closing a loading port for taking in and out a tape to prevent the lid from being unlocked and being opened by an erroneous operation. SOLUTION: A loading port 5 is closed by a swingably supported lid 7. A pair of lock bodies 29 are provided above and below the inner surface of the lid 7.
And a holding portion 30 for engaging and capturing the lock body 29 is provided on the case body 1 side. A pin hole 34 for a release pin P is provided facing the holding unit 30. The pin holes 34 are provided separately on the upper wall 23 and the bottom wall 21 of the case body 1. Thus, the lid 7 cannot be opened unless the upper and lower lock bodies 29 are simultaneously unlocked by operating the release pins P from different positions in different directions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as a magnetic recording medium for an external storage device of a computer, for example.
The present invention relates to a single reel type magnetic tape cartridge.

[0002]

2. Description of the Related Art A magnetic tape cartridge of this kind is known from Japanese Patent Application Laid-Open No. 8-63940. In this case, a single reel is accommodated in a case body having a rectangular box shape, and a connecting tool for pulling out the tape is provided at a paying-out end of the tape wound on the reel. The connector faces the loading opening on the front of the case. The loading opening can be opened and closed by a lid provided on the case body.

The lid is opened and urged to swing by a torsion coil type spring, and is provided with a lid lock mechanism for keeping the lid closed. The lock plate of the lid lock mechanism is provided so as to be exposed on the outer surface of the rocking base end of the lid, and when the lock plate is pressed and operated in the manner of pressing and pressing the switch button, the lid opens and rocks vigorously.

[0004]

In the lid lock mechanism described above, since the lock plate is exposed on the outer surface of the lid, the lock plate may be erroneously unlocked when handling the tape cartridge. That is not a problem on the left. However, even when the lock plate is inadvertently unlocked, the lid automatically opens and swings due to the spring force. May be damaged. A part of the tape may loosen from the loading opening due to a drop impact, or fragments of the lid or foreign matter may jump into the case body and damage the tape. Since the lid is easily opened just by operating the lock plate, there is also a disadvantage that the user is susceptible to mischief.

SUMMARY OF THE INVENTION An object of the present invention is to provide a single reel type magnetic tape cartridge which can surely prevent the lid from being opened carelessly and can prevent the lid from being opened by mischief. Another object of the present invention is that the lid lock cannot be unlocked unless there is a clear intention to open the lid, and the opening for loading is opened when the lid is unlocked and the lid is not opened unless the lid is unlocked. To prevent accidental opening and operation of the lid when handling the tape cartridge.

[0006]

In the magnetic tape cartridge of the present invention, a loading port 5 for opening and closing a connecting member 4 fixed to a pay-out end of a tape 3 is opened on a peripheral side surface of a case main body 1. A lid 7 for closing the mouth 5 is supported by the case body 1 so as to be openable and closable. A lid lock mechanism is provided between the case body 1 and the lid 7 to lock and hold the lid 7 in a closed state. The lid lock mechanism includes a plurality of lock bodies 29 provided on the lid 7 side and a plurality of holding parts 30 provided on the case body 1 corresponding to each lock body 29. In the closed state of the lid, a plurality of pins which engage with each other and face either one of the lock body 29 and the holding portion 30 that lock and hold the lid 7 so that the lid 7 cannot be opened, and allow the release pin P for unlocking to enter. A hole 34 is provided. The plurality of pin holes 34
Among the upper wall 23, the bottom wall 21, and the peripheral side wall 22 facing the loading port 5, the case main body 1 is formed so as to be dispersed on a plurality of different face walls.

Specifically, the lid 7 is formed in an L-shaped cross section by a lid side wall 24 and a lid front wall 25 which cover the loading opening 5 from the side and front sides at the front corner of the case body 1. The lid side wall 24 pivotally supports the rear end thereof via a pin 27 provided on the case body 1 so as to be horizontally swingable. The lid lock mechanism includes a pair of elastically deformable upper and lower lock bodies 29 projecting up and down on the inner surface of the lid front wall 25, and holding portions 30 provided on the inner surfaces of the upper wall 23 and the bottom wall 21 of the case body 1, respectively. It consists of. The holding portion 30 also has an engagement hole 32 formed as a pin hole 34 and penetrating the top wall 23 and the bottom wall 21 in and out.
A guide groove 33 is provided for guiding the claw portion 31 provided at the tip of the lock body 29 toward the engagement hole 32.

[0008]

Since the lid lock mechanism is constituted by the plurality of lock bodies 29 and the holding parts 30 provided corresponding to the lock bodies 29, the engagement state between the plurality of lock bodies 29 and the holding parts 30 can be simultaneously determined. Unless it is released, the lid 7 cannot be opened. Further, pin holes 34 for release pins P are provided separately on a plurality of different surface walls of the case body 1 such as the top wall 23 and the bottom wall 21, and the release operation direction of each release pin P is 3
Since it is different for every four, the unlocking operation of the lid 7 can be made more difficult. That is, even if the lock release operation of the lock body 29 and the holding unit 30 is mistakenly performed, the lid 7 can be securely closed and held. Even when the magnetic tape cartridge falls to the floor due to carelessness or the like, it is possible to prevent the lid 7 from being opened by a drop impact.

[0009]

1 to 5 show a single reel type magnetic tape cartridge according to an embodiment of the present invention. In FIG. 2, the magnetic tape cartridge has a rectangular box-shaped case body 1 formed by joining upper and lower cases 1a and 1b.
Accommodates a single reel 2 inside, and a tape 3
Is wound. A connecting member 4 for pulling out the tape 3 is fixed to the feeding end of the tape 3. The connecting tool 4 is arranged so as to face the loading port 5 opened at the front left corner of the case main body 1 and is engaged and held by a pair of elastic holding claws 6. The loading port 5 can be opened and closed by a swingable lid 7.

As shown in FIG. 5, a boss 9 of the reel 2 is opened upward, and a driving ring 10 for transmitting the rotational force of a driving body of the tape drive to the reel 2, a reel presser 11, and a reel A spring 12 for pressing and holding down the presser 11 is housed. The drive ring 10 is received by a seat 13 provided on the inner bottom of the boss 9, and is vertically slidable with respect to the seat 13, but is supported such that relative rotation is impossible. An adsorption plate 14 made of an iron plate, which is magnetically attracted by the driving body, is fixed to the lower surface of the seat 13.

To prevent tape slack when not in use, FIG.
As shown in the figure, the reel lock mechanism is arranged by utilizing the space at the front right corner of the case body 1. The reel lock mechanism includes a lock claw 16 that swings around a pin 15.
And a torsion coil-shaped spring 17 for urging the lock claw 16 toward the reel 2 side, and a gear tooth-shaped lock tooth 18 provided on the periphery of the lower flange of the reel 2. A release piece 19 protrudes from the lower surface of the middle part of the lock claw 16,
By operating a groove provided in the release piece 19 with a release pin inserted from the lower surface side of the lower case 1b, the lock claw 16
Can swing counterclockwise against the urging force of the spring 17 to release the locked state.

As shown in FIG. 1, the loading opening 5 is formed by diagonally notching the front left corner of the bottom wall 21 of the lower case 1b, and furthermore, the peripheral side walls 22 of the upper and lower cases 1a and 1b between the notch ends.
Is formed by notching. The upper wall 23 of the upper case 1a covers the upper surface of the loading port 5 without being cut. In order to protect the connecting tool 4 and the tape 3 facing the loading port 5, the loading port 5 can be opened and closed.
Closed with.

In FIG. 1 and FIG. 3, the lid 7 has a lid side wall 24 bent in an L shape and a lid front wall 25, and a cylindrical boss 26 provided at the rear end of the lid side wall 24 is pin 27. By pivoting, the loading port 5 is closed and closed (the state shown in FIG. 2), and from this position, the loading port 5 is opened by swinging in the clockwise direction (the state shown in FIG. 1). Can swing. The pins 27 are integrally erected from the lower case 1b, are inserted into the bosses 26, and are received on the upper case 1a side.

In order to lock the lid 7 in the closed position, a lid lock mechanism is provided between the lid 7 and the case body 1. The lid lock mechanism includes a pair of upper and lower lock bodies 29 protruding in a cantilever shape from above and below the inner surface of the lid front wall 25 so as to be parallel to the lid side wall 24, and the case body 1 corresponding to the lock bodies 29.
And a pair of holding portions 30 provided on the upper wall 23 and the bottom wall 21. Each lock body 29 is formed of a belt-like body that can be elastically deformed in the vertical direction, and a claw portion 31 is provided at a protruding end thereof.

The holding portion 30 is composed of an engagement hole 32 into which the claw portion 31 falls and engages, and a guide groove 33 inclined from the side edges of the upper wall 23 and the bottom wall 21 toward the engagement hole 32. As shown in FIG. 4, the engagement hole 32 also serves as a pin hole 34 that allows the release pin P for unlocking to enter, and is formed so as to penetrate the upper wall 23 and the bottom wall 21 in and out. Guide groove 3
3 guides the claw portion 31 toward the engagement hole 32 when the lid 7 is closed as shown in FIG. 3, and prevents the lock body 29 from being caught on the upper wall 23 and the bottom wall 21.

In the closed state of the lid, as shown in FIG. 4, the claw portions 31 of the upper and lower lock bodies 29 engage with the engaging holes 32 facing each other to prevent the lid 7 from opening and swinging. . To unlock the lid lock mechanism, the release pin P is simultaneously inserted from the outside into the upper and lower pin holes 34, and the upper and lower claws 31 are engaged with the engagement holes 32 against the elasticity of the lock body 29.
You need to push it out. Specifically, a pair of lock bodies 2
The cover 7 can be opened only by simultaneously operating the cover 9 in different directions from different directions and opening the cover 7 while maintaining the state. Therefore, even if one of the upper and lower lock members 29 is unlocked by mistake or intentionally, the lid 7 does not open.

In addition to the above-described embodiment, as shown in FIG. 6, lock bodies 29 are provided above and below the inner surface near the tip of the lid front wall 25,
The holding portions 30 can be provided on the top wall 23 and the bottom wall 21. Also, one of the holding portions 30 is provided on the peripheral side wall 22,
Another one may be provided on the bottom wall 21 or the upper wall 23. The lid 7 can be formed in a flat plate shape depending on the opening position of the loading port 5, and in the case of the flat cover 6,
In addition to supporting the lid 7 so that it can swing open and close, the lid 7 may be supported so that it can slide open and close. The holding portion 30 can be formed of an independent member that can be slid or rocked like the lock claw 16 for reel lock. In this case, the holding portion 30 is unlocked with a release pin P. Is also good.

[0018]

According to the present invention, a lid lock mechanism is constituted by a plurality of lock bodies 29 and a holding portion 30, and each lock body 29
Unless the engagement state between the and the holding portions 30 is simultaneously released, the lock release operation cannot be performed. Moreover, the release operation direction of the release pin P is made different for each pin hole 34,
It is difficult to unlock the lock members 29 or the holding portions 30 at the same time. Therefore, it is possible to reliably prevent the lid 7 from being opened due to a malfunction of the lid lock mechanism or the like, and it is possible to prevent foreign substances from entering the case due to the opening of the lid 7.
It is also possible to prevent the lid 7 from being easily opened by dropping on the floor or colliding with another object.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a lid lock mechanism.

FIG. 2 is an internal plan view of the magnetic tape cartridge.

FIG. 3 is a cross-sectional plan view showing a state where the lid is being opened and closed.

FIG. 4 is a sectional view taken along line AA in FIG. 2;

FIG. 5 is a sectional view taken along line BB in FIG. 2;

FIG. 6 is a cross-sectional plan view showing another embodiment of the lid lock mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case main body 4 Connecting tool 5 Loading port 7 Lid 29 Lock body 30 Holding part 31 Claw part 32 Engagement hole 34 Pin hole P Release pin

Claims (2)

[Claims] 1. A loading opening 5 for opening and closing a connecting tool 4 fixed to a feeding end of a tape 3 is opened on a peripheral side surface of the case body 1, and a lid 7 for closing the loading opening 5 is formed by the case body 1. A magnetic tape cartridge which is supported so as to be openable and closable and has a lid lock mechanism provided between the case body 1 and the lid 7 for locking and holding the lid 7 in a closed state, wherein the lid lock mechanism is provided on the lid 7 side. A plurality of lock bodies 29 provided
And a plurality of holding portions 30 provided on the case main body 1 corresponding to the lock members 29. In the closed state of the cover, the lock members engage with each other to lock and hold the cover 7 in a non-openable manner. A plurality of pin holes 34 that allow entry of a lock release pin P are provided to face either one of the holding member 29 and the holding portion 30, and the plurality of pin holes 34 face the loading port 5. A single-reel type magnetic tape cartridge formed by being distributed on a plurality of different face walls among the top wall 23, bottom wall 21 and peripheral side wall 22 of the main body 1. 2. A lid side wall 24 and a lid front wall 25 which cover the loading port 5 from the side and front sides at the front corner of the case main body 1 are formed in an L-shaped cross section. The rear end of the lid 24 is supported by a pin 27 provided on the case main body 1 so as to be horizontally swingable. A lid lock mechanism is provided on a pair of upper and lower elastically deformable upper and lower surfaces of the front wall 25 of the lid. A lock body 29 and a holding portion 30 provided on each of inner surfaces of the upper wall 23 and the bottom wall 21 of the case body 1. The holding portion 30 also serves as a pin hole 34 and has a top wall 23 and a bottom wall. 2. An engaging hole (32) formed through the inside and outside of the lock member (21), and a guide groove (33) for guiding the hook (31) provided at the tip of the lock body (29) toward the engaging hole (32). Reel type magnetic tape cartridge.