JPH03183082A - Tape cartridge - Google Patents

Abstract

PURPOSE:To stably execute temporary assembly by dropping the lock arm of an erroneous erasing preventing valve from an upper direction, loading the lock arm and engaging a longitudinal groove and a projecting part over an upper end on the inner deep wall of the erroneous erasing preventing hole provided in a lower case. CONSTITUTION:An erroneous erasing preventing hole 11 is recessed on the left end side of a rear wall 10b of a lower case 1b so as to go into the case. When an erroneous erasing preventing valve 12 is assembled, at first, it is integrated into the lower case 1b together with necessary parts such as tape reels 2 and 3 or a guide member 5. At such a time, the erroneous erasing preventing valve 12 is dropped from the upper direction into the erroneous erasing preventing hole 11. Next, when the lower case 1b is covered with an upper case 1a, in the erroneous erasing preventing hole 11, the erroneous erasing preventing valve 12 is housed so that a lateral arm part 16a of a lock arm 16 can be elastically deformed vertically at a slight interval in a void 14 formed between the lower end of a rear wall 10a of the upper case 1a and an upper end face 13a of an inner deep wall 13. Afterwards, a housed state can be obtained so that the lower end of this rear wall 10a can be positioned at the slight interval just on a main wall 15.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tape cartridge equipped with an erroneous erasure prevention means for identifying whether or not recording is possible on the main body case.
This allows the accidental erasure prevention valve to be temporarily assembled into the lower case of the main body case without coming off or shifting its position.

[Conventional technology]

Conventional accidental erasure prevention means include an accidental erasure prevention valve that is recessed into the rear wall of the main body case, and the accidental erasure prevention valve is inserted into this accidental erasure prevention hole and extends between the recordable position and the unrecordable position. It is built in so that it can be slid in the left and right directions. Further, a moderation means is provided for holding the erroneous erasure prevention valve at a recordable position and a recordable position.

[Problem to be solved by the invention]

In the main body case, which is formed by joining the upper and lower cases in a lid-like manner, an accidental erasure prevention valve is first built into the lower case side together with the necessary parts. Therefore, an accidental erasure prevention hole is provided on the rear wall of the lower case, but conventional accidental erasure prevention valves are temporarily assembled around the accidental erasure prevention hole in the lower case, and then assembled on the line until the upper case is covered. Problems were observed where the data could come off upwards or backwards from the accidental erasure prevention hole in the lower case due to impact or other causes, or it could become misaligned from side to side.

In particular, the moderation means for holding the erroneous erasure prevention valve in either the recordable position or the recordable position does not work effectively in the temporarily assembled state.

Therefore, even though the accidental erasure prevention valve is expected to be fully assembled so that it is in the recordable position, when it is temporarily assembled to the lower case, it is misaligned horizontally and shifted to the recordable position. There was a problem in that the product had to be re-checked after it was finished, leading to a situation where it was actually assembled.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a tape cartridge in which an erroneous erasure prevention valve can be reliably temporarily assembled into an erroneous erasure prevention hole in a lower case without coming off or shifting its position.

Nevertheless, another object of the present invention is to provide a tape cartridge cartridge in which the accidental erasure prevention valve is simply dropped and installed in the corresponding part of the lower case, and the assembly can be developed into automatic mechanization. .

[Means to solve the problem]

For example, as shown in FIG. 1, the present invention provides upper and lower cases 1a.
・Lower case 1b of main case 1 formed by butting 1b together
An erroneous erasure prevention hole 11 is recessed in the rear wall 10 so as to extend into the inside of the case, and an erroneous erasure prevention valve 12 is inserted into the erroneous erasure prevention hole 11 in the right and left direction across the recordable position and the unrecordable position. It is assumed that the tape cartridge is installed in a slidable manner.

Furthermore, the inner back wall 13 of the erroneous erasure prevention hole 11 of the lower case 1b is provided at a position that is biased toward the inside of the case than the rear wall 10a of the upper case 1a.

On the other hand, the accidental erasure prevention valve 12 has a main wall 5 on which the recorder-side detection member P acts, and a locking arm 6.
6 is formed into a piece shape having a horizontal arm portion 16a that integrally projects inward from the main wall 15 and a vertical arm portion 16b that is bent and connected downward from the arm portion 16a. The locking arm 16 of the accidental erasure prevention valve 12 is slidable along the inner inner wall 13 with its locking arm 16 straddling the upper end of the inner inner wall 13 . Furthermore, in a state where the accidental erasure prevention valve 12 is located at either the recordable position or the recordable position,
A vertical groove 24 is formed on one side of the inner surface of the inner inner wall 13 and the locking arm 16, and a protrusion 25 that engages with the vertical groove 24 when the accidental erasure prevention valve 12 is dropped from above is formed on the other side. The vertical groove 24 and the protrusion 25 are required to be able to engage and disengage freely as the accidental erasure prevention valve 12 slides.

Furthermore, moderation means can be provided between the locking arm 16 and the inner wall 13 to position and hold the accidental erasure prevention valve 12 at the recordable position and the recordable position, respectively. As the moderation means, the locking arm 16 is formed to be elastically deformable in the vertical direction using the connecting base of the horizontal arm portion 16a with the main wall 15 as a fulcrum, and is connected to the horizontal arm portion 16a and deep inside. A moderation convex portion 21 and a moderation concave portion 23 are provided on the upper end surface 13a of the wall 13, respectively, so that the moderation convex portion 21 and the moderation concave portion 23 engage and disengage from each other through elastic deformation of the locking arm 16 as the accidental erasure prevention valve 12 slides. . Thus, the longitudinal grooves 24 and protrusions 25, which engage and disengage with each other as the accidental erasure prevention valve 12 slides, are formed on the vertical arm portion 16b and the inner surface of the inner inner wall 13 to form the longitudinal grooves 24 and protrusions 25 of the moderation uneven portions 23 and 21. The longitudinal grooves 24 may be provided in correspondence with the positions thereof, and the vertical length of the longitudinal grooves 24 may be set larger than the depth of engagement between the moderation uneven portions 23 and 21.

[Effect]

The erroneous erasure prevention valve 12 is dropped into the inner back wall 13 of the erroneous erasure prevention hole 11 of the lower case 1b with its locking arm 16 straddling it from above. At this time, a temporarily assembled state is created in which the vertical groove 24 and the protrusion 25 are engaged.

In this temporarily assembled state, the main wall 15 of the accidental erasure prevention valve 12 is located outside the inner back wall 13, and the vertical arm portion 16b of the locking arm 16 is located on the inner surface of the inner back wall 13. Therefore, the vertical arm portion 16b functions to prevent the accidental erasure prevention valve 12 from being removed upward or falling backward even if the accidental erasure prevention valve 12 is subjected to an impact by the vertical length that covers the inner inner wall 13.

The longitudinal groove 24 and the protrusion 25 ensure that the erroneous erasure prevention valve 12 is in either the recordable position or the unrecordable position when both are properly engaged. And the vertical groove 24
The protrusion 25 does not impede the dropping of the accidental erasure prevention valve 12 from above, and prevents the accidental erasure prevention valve 12 from shifting in the left and right lateral directions even if it receives an impact in the temporarily assembled state. It works like that.

Since the unevenness portions 23 and 21 for moderation are provided between the horizontal arm portion 16a of the accidental erasure prevention valve 12 and the inner back wall 13 of the lower case 1b, the accidental erasure prevention valve 12 was temporarily assembled in the lower case 1b. auxiliary function of positioning the erroneous erasure prevention valve 12 to a recordable position or a recordable position in the state,
Particularly, in the fully assembled state after the upper case la is placed on the lower case 1b, it acts to position and shift the accidental erasure prevention valve 12 to the above two positions.

〔Effect of the invention〕

Therefore, according to the present invention, the locking arm 16 of the accidental erasure prevention valve 12 is dropped from above and attached to the inner back wall 13 of the accidental erasure prevention hole 11 provided in the lower case 1b, while straddling the upper end of the inner wall 13. At this time, it is only necessary to engage the vertical groove 24 and the protrusion 25.
Temporary assembly is easy, and automatic mechanization of assembly can be easily achieved.

Even if subjected to impact on the assembly line, the vertical arm portion 16b of the locking arm 16 effectively prevents the accidental erasure prevention valve 12 from coming out upward from the accidental erasure prevention hole 11 or falling backward. At the same time, the erroneous erasure prevention valve 12 can be reliably maintained at a predetermined recordable position or recordable position without any displacement.

In addition, since the uneven portions 23 and 21 for moderation are provided between the horizontal arm portion 16a of the locking arm 16 and the upper end surface 13a of the inner inner wall 13, the uneven engagement between these uneven portions 23 and 21 causes Even in the product after this assembly, the erroneous erasure prevention valve 12 can be reliably shifted to the recordable position or the recordable position.

〔Example〕

The drawings illustrate a VH3-C type tape cartridge, and in Figures 2 and 3, the main body case l.
is made by connecting upper and lower plastic cases 1a and 1b together with screws or the like.

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 wound onto the take-up tape reel 3 via guide members 5 provided on the left and right sides of the front end inside the case. A tape loading pocket 6 is recessed between both guide members 5, 5, and the front outside of the tape 4 that crosses this pocket 6 is covered with a front lid 7 attached to the main body case 1 when not in use. .

The rear wall 10 of the main body case 1 is formed by abutting the rear walls 10a and 10b of the upper and lower cases 1a and 1b, and has a sliding type accidental erasure prevention means 9 at the left corner of the rear wall 10 of the main body case 1.

The erroneous erasure prevention means 9 includes an erroneous erasure prevention hole 11 recessed in the rear wall 10b of the lower case 1b.
1, the accidental erasure prevention valve 12 is located at the recording (recording) possible position and recording (
It is built in so that it can be slid laterally to the left and right across the recording disabled position.

In FIGS. 1, 4, and 6, the accidental erasure prevention hole 11 is recessed in the left end side of the rear wall tob of the lower case 1b, and is recessed inward of the case. It is formed into a horizontally long rectangular shape when viewed from the front, including the setting position of the removal-type accidental erasure prevention valve and extending to the left 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. The inner back wall 13 is set in a position that is biased toward the inside of the case than the rear wall 10a of the upper case 1a located above, and when the upper case la is placed over the lower case 1b, as shown in FIG. As shown, the lower end of the rear wall 10a on the upper case la side and the upper end surface 13a of the inner back wall 13 face each other in a staggered manner, and a gap 14 is formed between these faces.

In FIGS. 1, 6, and 7, the accidental erasure prevention valve 12 is a plastic molded product, and has a vertical position that prevents the lever-type detection member P on the recorder side from entering the accidental erasure prevention hole ll. It has a main wall 15, a horizontal arm 16a is horizontally protruded inward from the upper end of the main wall 15, and a vertical arm L6b is bent downward from the projecting end of the arm 16a. A continuous hook-shaped locking arm 16 is formed integrally with the main wall 15. The main wall 15 has a rectangular shape approximately the same size as the break-off 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 together with necessary parts such as the tape reels 2 and 3 and the guide member 5. At this time, the erroneous erasure prevention valve 12 is dropped into the erroneous erasure prevention hole 11 from above. Now, as shown in FIGS. 1 and 4, the horizontal arm portion 16a is positioned on the upper end surface 13a of the inner inner wall 13, and the vertical arm portion 16b is positioned on the inner surface side of the inner inner wall 13. Let me straddle you. Then, the outer surface of the main wall 15 is assembled flush with the outer surface of the rear wall 10b.

Next, when the upper case 1a is placed over the lower case 1b, as shown in FIG.
The horizontal arm portion 16a of the locking arm 16 is housed in the gap 14 formed between the upper end surface 13a and the upper end surface 13a so as to be elastically deformable in the vertical direction with a slight gap therebetween.
A state in which the lower end of a is located directly above the main wall 15 with a slight gap is obtained. In addition, the outer surface of the main wall 15 of the accidental erasure prevention valve 12 is flush with the outer surface of the rear walls 10a, 10b of the upper and lower cases 1a, 1b within the accidental erasure prevention hole 12, so that when the recorder is loaded, The sensing members P can be slid smoothly on their outer surfaces to ensure reliable sensing of whether or not recording is possible.

By sliding the locking arm 16 in the left and right directions along the inner back wall 16, the accidental erasure prevention valve 12 moves between the recordable position on the right end side in the accidental erasure prevention hole 11 and the recordable position on the right end side in the accidental erasure prevention hole 11, as shown in FIG. As shown in FIG. 5, it is possible to switch from the left end side to the unrecordable position.

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 surface 13a, it is prevented from falling off toward the outer surface of the opening of the erroneous erasure prevention hole 11. however,
If the straddle depth is small, there is a possibility that the lower end of the main wall (5) of the accidental erasure prevention valve 12 may tilt in a direction in which the lower end of the main wall (5) protrudes from the bottom of the accidental erasure prevention hole 11. In order to reliably prevent the accidental erasure prevention valve 12 from tilting and maintain its vertical position, a concave groove 18 is provided in the left-right direction at the bottom of the accidental erasure prevention hole 11 as shown in FIG. A convex portion 19 provided on the inner side of the lower end of the main wall 15 of the prevention valve 12 is fitted into the concave groove 18.

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, it is possible to erase the accidental erasure. This allows the prevention valve 12 to be slid more easily.

As shown in FIGS. 1 and 4, the horizontal arm 16
A moderation convex portion 21 is provided on the lower surface side of a. - side, internal wall 1
Moderation recesses 23 are formed at three locations on the left and right sides of the upper end surface 13a of No. 3. Therefore, when the accidental erasure prevention valve 12 is completely switched to the recordable position and the recordable position, the moderation convex part 21 connects with the main wall 15 of the horizontal arm part 16a in the vertical direction with the base as the fulcrum. It engages with each moderation recess 23 through elastic deformation, and restricts free lateral movement of the accidental erasure prevention valve 12. In this state, the rear wall 10 of the upper case 1a
A is close to the upper end of the main wall 15 of the accidental erasure prevention valve 12 and prevents the valve I2 from floating up.

However, when the moderation uneven portions 23 and 21 are engaged only, the locking arm 16 is moved away from the inner back wall 13 due to impact on the assembly line when the accidental erasure prevention valve 12 is temporarily assembled to the lower case 1b. If it floats up, the erroneous erasure prevention valve 12 will still be displaced in the left and right lateral directions.

In order to prevent misalignment of the erroneous erasure prevention valve 12 in the left and right directions in this temporarily assembled state, as shown in FIGS. A vertical groove 24 is provided at a position that is longer in the vertical direction than the engagement depth of the moderation uneven portions 23 and 21. On the other hand, vertical arm portion 1
6b is provided with a linear protrusion 25 that engages with the vertical groove 24.

In this way, the erroneous erasure prevention valve 12
When in the recordable position or the recordable position on a, the vertical groove 24 and the protrusion 25 engage to prevent the accidental erasure prevention valve 12 from shifting in the left-right direction.

The vertical groove 24 is formed downward from the upper end of the inner back wall 13, and the erroneous erasure prevention valve 12 is formed on the inner back wall 13 at a predetermined position.
When it is dropped and installed, the protrusion 25 smoothly engages in the vertical groove 24.

The concave and convex portions 23 and 21 for moderation, the vertical groove 24, and the protrusion 25 are each tapered so that the accidental erasure prevention valve 12 can be slid with a light operating force. It is preferable to set the taper more gently than the taper of 23 because it allows for smoother sliding operation.

When the accidental erasure prevention valve 12 is switched to the recordable position, as shown in FIG. 3 and FIG. An operation groove 26 into which a fingertip or the like can be inserted is formed in. Furthermore, even in the state shown by the two-point line 4a in FIG. 3 and in the state where the accidental erasure prevention valve 12 is switched to the unrecordable position as shown in FIG. An operation groove 27 into which a fingertip or the like can be inserted is formed between the hole 11 and the left end wall. Thus, even when the outer surface of the main wall 5 of the accidental erasure prevention valve 12 is flush with the outer surface of the case rear wall 10,
By placing the fingertips on these operating grooves 26 and 27, the user can easily slide the erroneous erasure prevention valve 12.

As shown in FIGS. 1 and 6, a joining claw 28 is integrally provided upwardly projecting from the left end of the accidental erasure prevention hole 11 of the lower case 1b. The tip of this joining claw 28 is inserted into a hole 29 provided in the rear wall 10a of the upper case la from inside the upper case, so that the upper and lower cases la and 1b are integrally joined at the corner portion. The operating groove 27 is formed below the connecting claw 28 to make effective use of the narrow space.

[Another example]

As a moderation means for the accidental erasure prevention valve 12, contrary to the above embodiment, a moderation recess 23 is provided in the horizontal arm portion 16a, and a moderation convex portion 21 is provided on the upper end surface 13a of the inner inner wall 13. Good too. Further, this moderation means may be formed between the accidental erasure prevention valve 12 and the upper case 1a in the fully assembled state. Furthermore, the above-mentioned vertical groove 24 and protrusion 25 function as a moderation means for holding the accidental erasure prevention valve 12 in the recordable position and the recordable position in the fully assembled state in which the upper and lower cases 1a and 1b are coupled, It is also possible to omit the moderation means consisting of the above-mentioned uneven portions 23 and 21.

The vertical groove 24 may be provided on the vertical arm portion 16b, and the protrusion 25 may be provided on the inner surface of the inner deep wall 13. Further, it is sufficient that the positioning means consisting of the vertical groove 24 and the protrusion 25 are engaged when the accidental erasure prevention valve 12 is shifted to either the recordable position or the recordable position at least in the temporarily fixed state. .

In the accidental erasure prevention valve 12, the vertical arm portion 16 of the locking arm 16
By forming the section a longer downwardly than that of the above embodiment and increasing the straddling depth with respect to the inner deep wall 13, the engagement between the convex part 19 of the main wall 15 and the groove 18 of the bottom can be omitted. Good too.

[Brief explanation of drawings]

Figures 1 to 7 show an embodiment of the tape cartridge according to the present invention, with Figure 1 being a longitudinal sectional side view of the main parts, Figure 2 being an overall internal plan view, and Figure 3 being a rear view. , Figure 4 is a plan view with the accidental erasure prevention valve held in the recordable position, Figure 5 is a plan view with the accidental erasure prevention valve held in the unrecordable position, and Figure 6 is an exploded perspective view. , FIG. 7 is a perspective view of the accidental erasure prevention valve seen from behind. 1... Main case, 1a... Upper case, 1b... Lower case, 10... Rear wall of main case, 10a... Rear wall of upper case. , tab... Rear wall of lower case, 11... Erroneous erasure prevention hole, 12... Erroneous erasure prevention valve, 13... Inner back wall, 15... Earthen wall, 16... Locking arm, 16a ・ ・ ・ 16b ・ ・ 2 L ・ ・ ・ ・ 23 ・ ・ ・ ・ 24 ・ ・ ・ 25 ・ ・ ・ ・ P ・ ・ ・ ・ ・ ・ Horizontal Arm part, - Vertical arm part, - Convex part for moderation, - Concave part/vertical groove for moderation, - Projection, - Detection member. Same inventor

Claims (1)

[Claims] 1. The main case (1) consists of upper and lower cases (1a) and (1b) that are joined together with lids, and the rear wall (10b) of the lower case (1b) is provided with an accidental erasure prevention hole ( 1
1) is recessed into the case, and an accidental erasure prevention valve (12) is built into the accidental erasure prevention hole (11) so that it can be slid left and right across the recordable position and the unrecordable position. For tape cartridges that are equipped with
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.
includes a main wall (15) on which the main wall (15) acts, and a locking arm (16), and the locking arm (16) is a horizontal arm (16a) that projects inward from the main wall (15). and the horizontal arm (1
Vertical arm part (16b) bent downward from 6a)
The accidental erasure prevention valve (12) has a locking arm (16) that straddles the upper end of the inner inner wall (13) and extends along the inner inner wall (13). It is slidable, and when the accidental erasure prevention valve (12) is located at either the recordable position or the recordable position, the inner back wall (13)
) and one of the locking arms (16) is provided with a vertical groove (24).
), and the other side is provided with a protrusion (25) that engages with the vertical groove (24) by dropping the accidental erasure prevention valve (12) from above, and these vertical grooves (24) and the protrusion (25) ) refers to a tape cartridge characterized in that it can be freely engaged and disengaged with the sliding operation of an erroneous erasure prevention valve (12). 2. A moderation means is provided between the locking arm (16) and the inner wall (13) for positioning and holding the accidental erasure prevention valve (12) at a recordable position and a recordable position, respectively; As a means, the locking arm (16) has a horizontal arm portion (16a).
It is formed so that it can be elastically deformed in the vertical direction using the connecting base as a fulcrum to the main wall (15) of
a) and the upper end surface (13a) of the inner inner wall (13), the locking arm (1
A moderation convex portion (21) and a moderation concave portion (23) that engage and disengage through elastic deformation of 6) are provided, and the vertical arm portion (16)
b) and the inner surface of the inner inner wall (13), there are vertical grooves (2) that engage and disengage from each other as the accidental erasure prevention valve (12) slides.
4) and the protrusion (25) are connected to the moderation uneven portions (23, 21).
2. The tape according to claim 1, wherein the vertical groove (24) has a vertical length set to be larger than an engagement depth between the moderating uneven portions (23, 21). cartridge.