JPH0828093B2 - Tape car ledge - Google Patents

Description

The present invention relates to a tape cartridge having a tape loading pocket on the front side of a main body case and a front lid for opening and closing the pocket, More specifically, it is an improvement of the locking mechanism that keeps the front lid closed when not in use.

[Conventional technology]

Conventionally, as this type of tape cartridge, for example, there is one as shown in FIGS. 9 and 10. The front cover 6 for protecting the tape is pivotally attached to the front side of the main body case 1 so as to be openable and closable about the horizontal axis 7, and
A mechanism for locking the front lid 6 in the closed posture is provided between the side piece 6b of the above and the side wall 9 of the main body case 1.

As shown in FIG.
Are arranged substantially parallel to each other along the inner surfaces of the side wall 9 and the side piece 6b,
The lock claw 13 held at the tip of the lock tool 10 is provided on the side piece 6b of the front lid 6.
The release projection 14 at the rear end is engaged with a recess 21 provided on the inner surface of the main body 1 and projects outward from the opening 16 of the side wall 9 of the main body case 1. A leaf spring 22 is interposed between the locking tool 10 and the boss 19 on the inner surface of the main body case 1, and the spring force causes the locking tool 10 to move.
Is always urged to move to the lock position along the inner surface of the side wall 9. Thus, when this is loaded in the deck, the unlocking operation member on the deck side pushes the unlocking projection 14 inwardly of the case, so that the lock claw 13 of the lock tool 10 is recessed in the front lid 6.
Move in parallel to the unlocked position.

In this way, when the locking mechanism of the front lid 6 is such that the locking tool 10 moves in parallel between the locked position and the unlocked position, a locking tool 10 such as another conventional example shown in FIG. 11 is used.
The lock claw is more fixed than the cantilever type in which the rear end 10a is fixed to the main body case 1 and the lock claw 13 at the front end is engaged and disengaged with the recess 21 of the front lid 6 with the rear end 10a as a fulcrum. The pushing stroke required to remove 13 from the recess 21 is small, and the greatest advantage is that it can be compactly stored even in a narrow space.

However, if the release projection 14 is insufficiently pushed by the release operation member on the deck side, the lock of the front lid 6 cannot be completely released. Therefore, as shown in FIG. 10, the lock pawl 13 is inclined at an angle α, and the lock pawl 13 is still at the open position (K position shown in FIG. 9) of the front lid 6 on the deck side. A releasing method is adopted in which safety and certainty are ensured, in which the opening is forcibly opened with a constant force even when engaged with the recess 21 without completely disengaging it.

[Problems to be solved by the invention]

However, when the front lid 6 is forcibly opened as described above, as shown in FIG. 10, the lock claw 13 hooked in the recess 21 at the position where the front lid 6 is forcibly opened is the case. As the force F _{1 in the} front direction of the case is applied to the lock 10 by being pulled forward and the force F ₂ is applied to the direction of the unlock position at the same time, the lock 10 shifts to the position indicated by the imaginary line L and falls off. There was a problem in that it would not be able to return to the initial locked position and would remain in the misaligned state.

Therefore, according to the present invention, the lock tool 10 having the lock claw 13 and the release projection 14 is provided on the side wall 9 of the main body case 1.
In the tape cartridge in which the lock surface is engaged with the front lid 6 in a posture parallel to the side wall 9 on the inner surface side of the tape cartridge and the unlock position which is disengaged from the front lid 6, the lock tool is displaced and dropped. The purpose is to prevent.

[Means for solving problems]

In the present invention, the lock 10 does not move to the front of the case even when the front cover 6 is forcibly opened when loaded on the deck. For that purpose, a position regulating means for regulating the movement of the lock tool 10 toward the front of the case is provided between the main body case 1 and the lock tool 10. However, as the position regulating means, it is necessary to adopt a means that does not hinder the locking tool 10 from moving substantially parallel to the locking position and the unlocking position. For example, one of the lock tool 10 and the main body case 1 is provided with a position regulating rib 18 parallel to the moving direction of the lock tool 10, and the other side is provided with a groove 15 fitted into the rib 18.
Should be provided. Further, the position regulating means may be set so as to match the center position S of the release projection 14 of the lock tool 10 so that the lock tool 10 can be moved in parallel smoothly without trouble such as being twisted at the position of the position regulating means. It is possible and preferable.

〔The invention's effect〕

As described above, the present invention includes the main body case 1 and the locking device 10.
Since the locking device 10 can be moved substantially parallel to the thickness direction of the side wall 9 of the main body case 1 by the position restricting means provided between the locking device 10 and the front side of the case, Even when the lid 6 is forcibly opened, there is no problem that the locking tool 10 is displaced or comes off, and a highly reliable front lid locking function can be exerted.

〔Example〕

1 to 5 show an embodiment of the tape cartridge according to the present invention.

In FIG. 2 and FIG. 3, the main body case 1 is made up of an upper case 1a and a lower case 1b that are abutted against each other and integrally connected to each other.
4 is rotatably arranged. The tape 2 is one reel 3 to the tape loading pocket 5 on the front side of the case.
And is wound on the other reel 4.

A front lid 6 is pivotally mounted on the front side of the main body case 1 so as to cover and protect the front side of the tape 2 led out to the tape loading pocket 5 when it is not used, so that the front lid 6 can be opened and closed.

The front lid 6 is a plastic molded product having a main wall 6a that covers the front surface of the main body case 1 in the left-right direction, and side pieces 6b and 6b that are connected from the left and right ends of the main wall 6a toward the rear of the case. . Left and right side pieces 6b, 6b are pivotally attached to the upper case 1a via a horizontal shaft 7.7, and the front lid 6 is opened and closed around the shaft 7.
A torsion coil spring 8 is attached to one of the horizontal shafts 7, one end of which is engaged with the front lid 6 side and the other end of which is engaged with the upper case 1a side so that the front lid 6 always rotates in the closing direction. Being energized.

On the inner surface of one side wall 9 of the main body case 1, a lock tool 10 for holding the front lid 6 in a closed posture is housed in a narrow space in front of the central portion of the side wall 9 in the front-rear direction.

In FIG. 5, the lock 10 is a plastic molded product, and has a base 11 made of a flat rectangular plate having a relatively wide width in the vertical direction and the front-back direction, and a front end of the base 11 from the center in the vertical direction to the front. Flexible arm that is extended
2, the lock claw 13 is provided at the tip of the arm 12 at an angle α as shown in FIG.
A pyramidal release projection 14 is provided on the lower side of the outer surface of the base 11, and a groove 15 is formed in a part of the upper edge of the base 11 so as to be located directly above the release projection 14.

1 and 3, the locking device for the upper case 1a
An opening 16 is provided in a part of the side wall 9 at a position where the side wall 10 is accommodated, and a position regulating rib 18 is formed on the inner surface of the upper wall 17 of the opening 16 so as to run in the thickness direction of the side wall 9. The boss 19 is provided so as to be in the upper position, and the boss 19 is projected downward from the inner surface of the upper wall 17, and the boss 19 and the side wall 9 are connected to the rib 20.
It will be connected. The boss 19 includes an upper case 1a and a lower case 1b.
The rib 18 is provided between the base of the boss 19 and the side wall 9 for screwing in the screw when they are butted against each other and screwed together. A recess 21 is provided on the inner surface of the side piece 6b of the front lid 6.

Thus, as shown in FIGS. 1 and 4, the lock 10 is installed so as to follow the inner surface of the side wall 9 of the upper case 1a,
The release projection 14 is projected from the opening 16, the groove 15 is slidably fitted in the position regulating rib 18, and the lock claw 13
Is engaged with the recess 21 of the front lid 6. A V-shaped leaf spring 22 is interposed between the base portion 11 and the rib 20 of the lock tool 10, and the spring force constantly urges the lock tool 10 along the inner surface of the side wall 9 to project the release projection 14. State and engagement state of the lock claw 13,
That is, it is urged to move to the lock position C (see FIG. 1).

Now, when loading on the deck and pressing the release projection 14 inward of the case by the release operation member on the deck side, the entire locking tool 10 moves in parallel from the locked position to the unlocked position D (see FIG. 1), The lock claw 13 is disengaged from the recess 21 of the front lid 6. At this time, since the lock 10 engages the groove 15 with the position regulating rib 18, even if the front lid 6 is forcibly opened on the deck side, the lock 10 moves to the front of the case and is positioned. It does not slip or fall off.

When the pressing force by the release operation member is released, the lock 10 is pushed back to the original lock position C along the inner surface of the side wall 9 by the leaf spring 22, and the lock claw 13 is recessed in the front lid 6.
And the release projection 14 projects from the opening 16.

In this embodiment, the position restricting means consisting of the groove 15 and the position restricting rib 18 is set so as to coincide with the center position S of the release projection 14 as shown in FIG. 4, that is, on the pushing action line of the lock 10. Therefore, the locking tool 10 is unlikely to twist the groove 15 into the position regulating rib 18, and can smoothly move in parallel between the lock position C and the unlock position D. That is, as shown in FIG. 4, in the twisting phenomenon, a reaction force due to a sliding resistance between the position regulating rib 18 of the groove 15 acts on the point of application of the force F acting on the lock 10 to cause the lock 10 to move. Twisting is likely to occur because the moment acts and tilts. However, by setting the groove 15 at the center position S of the release projection 14 on which the force F acts as described above, the moment does not act and the lock 10 moves smoothly.

However, depending on the loading mode on the deck, the release projection 14 may be pushed diagonally from the front side in the projecting direction without being pushed straight by the release operation member on the deck side. In such a case, As shown in FIG. 4, a reaction force due to the sliding resistance between the groove 15 and the position regulating rib 18 acts on the point of application of the force F acting on the lock tool 10, and a moment acts on the lock tool 10 to incline ( Twisting is likely to occur in the phantom line W in FIG. 4).

Therefore, in order to eliminate this twisting phenomenon, m (groove 15
Width) -1 (thickness of rib 18) ≈0, and tapers 15a and 15a are provided at the opening end of the groove 15 on the side facing the side wall 9 so as to expand outward. At that time, when the groove 15 is formed in a parallel shape as shown in FIG. 6, the locking tool 10 is twisted at a slight angle of θ ₁ , while as shown in FIG.
_The lock 10 can be tilted to an angle θ ₂ larger than ₁ . Therefore, the lock tool 10 can be freely deflected and smoothly moved regardless of the pushing direction. Further, as shown in FIGS. 4 and 5, a rib 23 is extended to the opening end of the groove 15 opposite to the side where the taper 15a is formed, and then the taper 15b is formed on the rib 23b.
・ It is preferable to attach 15b.

Further, as shown in FIGS. 1 and 5, in the lock tool 10, a rib 24 is projectingly provided on the lower end side of the surface of the base 11 opposite to the surface on which the release projection 14 is provided. The rib 24 is slidably placed on the upper surface of the pedestal 25 raised from the inner bottom surface of the lower case 1b as shown in FIG.
Translates more stably.

In addition, as a method of providing the taper 15a in the groove 15,
As shown in the figure, the tapers 15a and 15a may be provided in parallel with each other.

[Another embodiment]

As shown in FIG. 8, the position restricting means composed of the groove 15 and the position restricting rib 18 may be set at a position biased rearward of the release projection 14.

In the case of this embodiment, the release projection 14 is pressed to lock the device.
Since the above-mentioned problem that the groove 15 is twisted by the position regulating rib 18 when the 10 is released from the front lid 6 is likely to occur, the taper 15a is formed on one open end of the groove 15 as in the case of the above-described embodiment.
Is more preferably provided.

Further, as a means for urging the lock 10 to move to the lock position, an integrally formed spring may be provided in the lock 10 instead of the leaf spring 22 or together with the leaf spring 22.

The position restricting means is not limited to the combination of the groove 15 and the position restricting rib 18, and may be one that restricts not only the forward and backward movement of the lock 10 but also the forward movement thereof. Good.

[Brief description of drawings]

FIGS. 1 to 5 show an embodiment of the tape cartridge according to the present invention, and FIG. 1 shows A- in FIG.
A sectional view taken along the line A, FIG. 2 is a plan view of the inside of the upper case, FIG. 3 is a side view showing a partially cutaway state, FIG. 4 is a sectional view taken along the line BB in FIG. 3, and FIG. It is a perspective view of a tool. FIG. 6 is a sectional view of a main portion showing another embodiment of the present invention. FIG. 7 is a sectional view of a main part showing still another embodiment of the present invention. FIG. 8 is a cross-sectional view of a main part showing still another embodiment of the present invention. 9 and 10 show a conventional tape cartridge, FIG. 9 is an external side view, and FIG. 10 is an internal plan view of the main part of the upper case. FIG. 11 is an internal plan view of a main part showing another conventional tape cartridge. 1 …… Main body case, 6 …… Front lid, 7 …… Horizontal axis, 9 …… Side wall, 10
...... Lock tool, 13 ...... Lock claw, 14 ...... Release protrusion, 15 ......
Groove (position control means), 16 ... Opening, 18 ... Rib (position control means).

Claims (3)

[Claims] 1. A front cover 6 is mounted on the front side of a main body case 1 so as to be openable and closable about a horizontal shaft 7. The front cover 6 is held on the inner surface of a side wall 9 of the main body case 1 in a closed posture. The locking tool 10 is arranged substantially parallel to the side wall 9, and the locking tool 10 has a lock claw that is detachably attached to the front lid 6 at its tip.
13 and a release projection 14 that can be retracted and retracted with respect to the opening 16 provided in a part of the side wall 9, and the lock position C for engaging the lock pawl 13 with the front lid 6 and the lock pawl 13 are moved forward. It can be moved substantially parallel to the thickness direction of the side wall 9 to the unlock position D that is removed from the lid 6, and the lock tool 10 has a spring member, and is always biased to move in the lock position direction by this spring force. A tape cartridge, characterized in that, between the lock tool (10) and the main body case (1), there is provided a position restricting means for restricting the lock tool (10) holding the parallel movement and moving to the front of the case. 2. The position regulating means is a release projection 14 of the lock 10.
The tape cartridge according to claim 1, wherein the tape cartridge is provided so as to match the center position of the tape cartridge. 3. A position regulating rib provided on one of the lock 10 and the main body case 1 in the thickness direction of the side wall 9 as the position regulating means.
3. The tape cartridge according to claim 1 or 2, comprising 18 and a groove 15 provided on the other side so as to be slidably fitted to the position regulating rib 18.