JPH0356928Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a tape cartridge equipped with a front cover with a back cover for protecting the tape. Measures have been taken to prevent the lid from pushing up and to prevent the front lid from bending and deforming.

[Conventional technology]

3 and 4 illustrate conventional tape cartridges. Tape reels 3, 3 on which tape 2 is wound are rotatably arranged on the left and right sides inside the main body case 1 of this device. Tape outlet ports 4, 4 are formed in the left and right cylindrical portions of the front surface of the main body case 1 in a front-opening shape,
A tape loading pocket 5 is provided at the center of the front surface of the main body case 1, extending between the left and right tape outlet ports 4 and extending inwardly into the case. And tape 2 is one tape reel 3
From there, the tape 31 is led out to the front of the pocket 5 through the outlet 4 at the front thereof, introduced into the tape outlet 4 on the other side, and wound onto the tape reel 3 at the rear thereof.

There are tape outlet ports 4, 4 on the front side of the main case 1.
A front cover 6 is attached to cover and protect the front side of the tape 2 stretched between them. This front lid 6
A front wall 6a that closes the front surface of the main body case 1 over the entire left and right length thereof, left and right side pieces 6b, 6b connected rearward from the left and right ends of the front wall 6a, and each inner surface of the left and right side pieces 6b, 6b. A pivot 7 protruding from the
7, and its left and right side pieces 6b, 6b are the left and right side walls 8,
8, and the pivots 7, 7 are fitted into shaft holes provided in the left and right side walls 8, 8, respectively, thereby being pivoted. The front cover 6 can now be rotated around the pivot shaft 7 between the lower closed position that covers the front side of the tape 2 and the upper open position that opens the front side, and is mounted on one of the pivot shafts 7. A spring member not shown in the drawings is always biased to allow the valve to close.

A back cover 11 is attached to the rear side of the front cover 6 at the location where the tape loading pocket 5 is present. When not in use, this back cover 11 covers the back side of the tape 2, that is, the inner side including its lower side, and the top side of the opening of the pocket 5, to prevent dust that enters from the top and bottom opening sides of the pocket 5 from adhering to the tape 2. This prevents the user's hand from accidentally touching the tape 2 from the bottom side of the opening of the pocket 5.

Here, the back cover 11 is a plastic molded product having a generally T-shaped cross section, and includes an inclined wall 11a that covers the back side of the tape 2, and a sloped wall 11a that is connected to the upper end of the inclined wall 11a and covers the opening upper surface of the pocket 5. a ceiling wall 11b that closes off a ceiling wall 11b, rotating shafts 12, 12 protruding from the vicinity of the center in the vertical direction at the left and right ends of the inclined wall 11a, and sliding shafts protruding from below from the rotating shafts 12, 12 at the left and right ends of the inclined wall 11a. It has shafts 13, 13,
Rotating shafts 12, 12 are rotatably connected to shaft pieces 14, 14 protruding from the rear side of the front lid 6, respectively, and sliding shafts 13, 13 are connected to left and right side walls 5a, 5a inside the pocket 5. Approximately S-shaped guide groove 1 provided
6 and 16, respectively, so as to be slidable.

The front cover 6 can be opened and closed from a lower closed position shown by a solid line in FIG. 4 to an upper open position A, respectively. When the front cover 6 is rotated upward around the pivot shaft 7 from the closed position, the back cover 11 is rotated around the rotation axis 12 and the sliding shaft 13 is slid upward along the guide groove 16. The tape 2 is moved upward and opened together with the front lid 6 as shown by the broken line B in FIG. 4, and the front and back sides of the tape 2 are exposed by opening both lids 6 and 11.

Here, the left and right ends of the front cover 6 are supported on the main case 1 side via pivots 7, 7, but they are formed thinly from plastic material, and moreover, the back cover attached to the rear side 11 is merely in a normally installed state in which the sliding shaft 13 is freely slidably inserted along the guide groove 16. Therefore, for example,
When handling, the front cover 6 in the closed state may be strongly pressed by a user's finger, and in such a case, a pressing force F acts on the front cover 6 from the front inward of the case, and as a result, as shown in FIG. As shown by the imaginary line C inside, the sliding shaft 13 of the back cover 11 slides along the guide groove 16 as it approaches and escapes upward. As a result, the front lid 6 is deformed in an arc shape near the center in the left-right direction toward the inside of the pocket. This bending of the front cover 6 causes the rear side of the front cover 6 to contact and interfere with the tape 2, causing damage and deformation of the tape 2.

Therefore, in order to solve this problem, a device as shown in FIG. 5 has been proposed. Where,
A surface 17 perpendicular to the rear end surface of the ceiling wall 11b of the back cover 11
a, 17b are formed in two stages, upper and lower, while the vertical surface 17 is formed on the front end surface of the upper wall 18 of the main body case 1.
Vertical surface 19a that butts and abuts a, 17b,
19b is provided. Thus, when the pressing force F acts on the back cover 11 in the direction of the arrow through the front cover 6 and the back cover 11 is pressed in the same direction, the vertical surfaces 17a, 17
The pressing force F is received by the surface contact between b, 19a, and 19b, thereby suppressing the phenomenon of the back cover 11 pushing up and preventing the front cover 6 from bending.

[Problem that the invention attempts to solve]

However, in this improvement plan, the vertical surfaces 17a, 17b are formed within the thickness of the ceiling wall 11b of the back cover 11, and since the thickness is originally small, the contact area between the vertical surfaces 17a, 17b, 19a, 19b is small. It's small. Therefore, with a slight pressing force F, the rear end surface of the ceiling wall 11b of the back cover 11 comes off the front end surface of the upper wall 18 of the main body case 1 and looms upward, making it impossible to fully achieve the intended purpose. do not have. In other words, the pressing force F acting on the back cover 11 through the front cover 6 is received by the contact surface between the rear end surface of the ceiling wall 11b of the back cover 11 and the front end surface of the upper wall 18 of the main case 1, which this comes into contact with. Ceiling wall 11b
I realized that there was a limit due to the thickness constraints.

This invention focuses on this fact, and the pressing force F
Even when the front cover 6 acts on the back cover 11 through the front cover 6, the back cover 11 can be sufficiently counteracted to prevent the back cover 11 from moving upward, thereby preventing the front cover 6 from bending and the tape from being damaged or deformed. It is something to do.

[Means for solving problems]

In order to achieve the above object, in the present invention, a front cover 6 that covers the front side of the tape 2 led out to the front of the main body case 1 is pivotally attached to the main body case 1 so as to be rotatable in opening and closing around a pivot 7. A back cover 11 that covers the back side of the tape 2 is pivotally connected to the rear side so that it opens and closes in conjunction with the opening and closing rotation of the front cover 6, and when the back cover 11 is closed, the rear end of the ceiling wall 11b of this is connected to the main body. The tape cartridge is assumed to be in contact with or close to the front end of the upper wall 18 of the case 1.

In addition, in the present invention, when the front cover 6 and the back cover 11 are in a closed state, when the pressing force F acts on the back cover 11 through the front cover 6, the rib 20 is attached to the ceiling wall of the back cover 11 in order to receive this through surface contact. It is provided in a cylindrical location different from that between the rear end of 11b and the front end of the upper wall 18 of the main body case 1. That is, as shown in FIG. 1, a vertical wall surface 21 provided below the upper wall 18 of the main body case 1
Rib 20 having a vertical surface 20a in surface contact with
is provided below the ceiling wall 11b of the back cover 11. Note that the vertical contact length Y of the vertical surface 20a of the rib 20 with the vertical wall surface 21 can be set to be larger than the thickness X of the ceiling wall 11b.
Even a slight pressing force F is advantageous in that it can prevent the back cover 11 from pushing up. Rib 20 to back cover 11
It is optional to provide it continuously over almost the entire length in the left-right direction, or to provide it intermittently in that direction.

[Effect]

In the above configuration, when the pressing force F acts on the front lid 6 in the direction of the arrow and the back lid 11 is pressed in the same direction, the vertical surface 20a of the rib 20 comes into contact with the vertical wall surface 21 on the side of the main case 1, Due to the frictional force generated between the contact surfaces, the back cover 11 strongly resists the pressing force F without pushing up. Therefore,
The front cover 6, which is subjected to the pressing force F, no longer bends due to the tension action of the back cover 11.

[Effect of idea]

According to the present invention as described above, the pressing force F acting from the front cover 6 is received by the surface contact between the vertical surface 20a of the rib 20 and the vertical wall surface 21 on the main body case 1 side. The pressing force F can prevent the back cover 11 from pushing up, and can effectively prevent the front cover 6 from bending. Therefore, damage and deformation of the tape 2 caused by the bending of the front cover 6 can be prevented.

〔Example〕

An embodiment of the present invention will be described based on FIGS. 1 and 2.

The overall configurations of the main body case 1, front cover 6, and back cover 11 are substantially the same as those of the conventional case described above, so only the points that are different from the conventional back cover 11 will be described.

In the back cover 11, ribs 20 having vertical surfaces 20a are integrally formed at both left and right ends of the rear corner where the inclined wall 11a and the ceiling wall 11b intersect. On the other hand, on the main body case 1 side, a vertical wall surface 21 is formed near the upper end of the rear wall 5b inside the pocket 5 so as to correspond to the vertical surface 20a of the rib 20 when the back cover 11 is closed. vertical plane 2
The effective contact height dimension Y between the contact surface between 0a and the vertical wall surface 21a is the thickness X of the ceiling wall 11b of the back cover 11.
Set larger than . The vertical surface 20a and the vertical wall surface 21 may or may not be in contact with each other under normal conditions, but they must be set so that they always come into contact at least when a pressing force F in the direction of the arrow is applied from the front cover 6. Needless to say, it won't happen.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the tape cartridge according to the present invention, FIG. 1 is an enlarged sectional view of the main part of the tape cartridge, and FIG. 2 is a bottom view of the front end of the tape cartridge. Department. 3 and 4 illustrate a conventional tape cartridge, with FIG. 3 being an internal plan view and FIG. 4 being an enlarged sectional view of the main parts. FIG. 5 is a sectional view of main parts showing another conventional example. 1...Body case, 2...Tape, 3...Tape reel, 5...Pocket, 6...Front lid, 7...
Pivot of front cover, 11... Back cover, 11a... Inclined wall of back cover, 11b... Ceiling wall of back cover, 12... Rotation axis of back cover, 13... Sliding axis of back cover, 16... ...Guide groove, 18...Top wall of main body case, 20...Rib,
20a... Vertical surface of the rib, 21... Vertical wall surface on the side of the main body case.

Claims (1)

[Scope of utility model registration request] Tape 2 led out to the front of main case 1
A front cover 6 that covers the front side of the tape 2 is pivoted around a pivot 7 so as to be able to open and close freely, and a back cover 11 that covers the back side of the tape 2 is attached to the rear side of the front cover 6 and is linked to the opening and closing rotation of the front cover 6. The tape cartridge is pivotally connected to open and close with the back cover 11 closed, and the rear end of the ceiling wall 11b is in contact with or close to the front end of the upper wall 18 of the main case 1. Lid 6
and a vertical surface 20a that comes into surface contact with a vertical wall surface 21 provided on the lower side of the upper wall 18 of the main case 1 when a force F is applied to the front lid 6 to press it backward when the back lid 11 is in the closed state. A tape cartridge characterized in that a rib 20 having a shape is provided on the lower side of a ceiling wall 11b of a back cover 11.