JPH06139743A - Tape cartridge - Google Patents

Abstract

PURPOSE:To obtain complete dust-proof performance, and simultaneously, to surely regulate the depth of inserting when the main body case is pressed in the magnetic recording device. CONSTITUTION:A dust cover 21 closing an inside including the lower side of the tape 2 and the opening upper surface of a pocket 19 in an opening area of the pocket 19 in a case front surface is fitted between a main body case 1 and a front lid 10. The dust cover 21 opens and closes linked with the opening and closing action of the front lid 10. Recessed parts 40 are made at the both sides of lower edge at the front board 11 of the front lid 10. Ribs 34 for regulating the height of a tape are integrally projected at the both outside positions of the pocket at the front edge of the bottom wall 4 of the main body case 1. The front edge surfaces of the respective ribs 34 are regulating surfaces 34a abutting on the magnetic recording device and regulating the depth of inserting in the magnetic recording device. The respective ribs 34 face to the recessed parts 40 and the regulating surfaces 34a are positioned at the middle position of the thickness of the front board 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cartridge in which a tape loading pocket is largely recessed in the center of the front surface of a main body case and a front lid for protecting the tape is provided on the front surface of the case.

[0002]

2. Description of the Related Art A conventional technique of this type of tape cartridge will be described with reference to the accompanying drawings. A tape loading pocket 19 is formed in the center of the front and right sides of a main body case 1 containing a tape 2. , In the body case 1,
The front cover 10 that closes the front surface of the front cover 10 from left to right is mounted so that the front cover 10 can be opened and closed.
Providing notches 40 on the left and right of the lower end,
At the front edge of the bottom wall 4 of the body case 1, the pocket 19
Restricting surfaces 34a, 34a for restricting the depth of pushing into the magnetic recording device at the left and right outer positions of the notch 4 respectively.
Forming to face 0/40 is, for example, Jitsuko Sho 52
It is publicly known for video shown in Japanese Patent Publication No. 8407.

[0003]

In such a tape cartridge, the pocket 19 is formed in a large concave shape, and the front lid 10 is formed so as to cross the front surface of the pocket 19.
The tape 2 is threaded on the back side of the. Therefore, when not in use, dust easily enters from the upper and particularly the lower opening surface of the pocket 19 and adheres to the tape 2. It is easy to damage the tape by touching the tape 2 directly with your fingertips. As described above, in the conventional embodiment, the tape protection when not in use depends only on the front lid 10 that closes the outside of the front surface of the tape 2, and this point is a one-handed drop.

A further problem is that in the so-called VHS type, the regulating surface 34a is located at a position retracted from the inner rear surface of the front plate 11 to the rear side of the case, and the dust enters the front lid 10 through the notch 40. This is the point of sticking to the tape. Further, as the tape cartridge is frequently loaded / unloaded in / from the magnetic recording device, the regulation surface 34a is damaged by the contact with the receiving member on the magnetic recording device side. However, in the so-called beta type, the restricting surface 34a is set so as to be flush with the outer front surface of the front plate 11 or slightly project therefrom, and the restricting surface 34a is exposed forward through the notch 40. Therefore, the scratches are noticeably unsightly. And regulatory side 34
There is a possibility that a may be easily damaged by hitting other objects, which may cause a deviation in the pushing depth of the tape cartridge into the magnetic recording device and cause serious trouble.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to obtain a tape cartridge having excellent tape protection performance by dually preventing dust when not in use. Another object of the present invention is to obtain a tape cartridge capable of effectively and reliably controlling the depth of pushing the main body case into the magnetic recording device. Still another object of the present invention is to obtain a tape cartridge which can effectively prevent cutting and damage due to contact with other substances on the regulation surface.

[0006]

According to the present invention, a main body case 1 is provided.
In a tape cartridge in which tape loading pockets 19 are provided in the center portion on the left and right sides of the front surface of the main body 1 and a front lid 10 for closing the front surface of the main body case 1 from left to right is openably and closably mounted. Between the body case 1 and the front lid 10, a dust cover 21 that closes the inner side including the lower side of the tape 2 and the opening upper surface of the pocket 19 in the opening region of the pocket 19 is provided. The front lid 11 of the front lid 10 is provided with cutouts 40, 40 on the left and right sides of the lower end, and the bottom wall 4 of the main body case 1 is attached. At the front end edge, the restriction surfaces 34a, 34a for restricting the depth of pushing into the magnetic recording device are formed at the left and right outer positions of the pocket 19 so as to face the notches 40, 40, respectively. Rukoto, it is a requirement that each regulating surface 34a is positioned in the middle of the wall thickness of the front plate 11.

[0007]

When the tape is not used, the outside of the front surface of the tape 2 is closed by the front lid 10. At the same time, in the opening area of the pocket 19, the inner side including the lower side of the tape 2 is closed by the dust cover 21, and the dust cover 21 prevents dust and the like from entering from the lower surface side of the opening of the pocket 19. To do. Further, the dust cover 21 also closes the upper opening surface of the pocket 19. When the tape cartridge is loaded in the magnetic recording device, the regulation surfaces 3 provided on the left and right of the front end of the bottom wall 4 of the main body case 1.
4a and 34a are received by the receiving member of the magnetic recording device through the notches 40 and 40 of the front lid 10, and the pushing depth of the main body case 1 is restricted by the contact.

Next, when the front lid 10 is opened upward in the magnetic recording apparatus, the dust cover 21 is also opened in conjunction with this operation, and the tape 2 can be loaded in front of the main body case 1. In the unused state in which the front lid 10 is closed, each regulation surface 34a is located in the middle of the thickness of the front plate 11 of the front lid 10. This means that the restriction surfaces 34a are not located rearward of the inner rear surface of the front plate 11, and the restriction surfaces 34a do not protrude from the outer front surface unless they are flush with the outer front surface of the front plate 11. Means

[0009]

According to the present invention, the tape loading pocket 1 is formed in the center of the front surface of the main body case 1 on the left and right sides.
Even if 9 is largely recessed, the front lid 10 and the dust cover 21 can well prevent dust from adhering to the tape 2. It is also possible to prevent the tape 2 from being touched by other objects such as fingertips, and the tape can be protected. The body case 1 has the pocket 19 at the center of the front surface, and at the left and right outer positions of the pocket 19, the regulation surfaces 34a, 34a are provided on the front end edge of the bottom wall 4 of the body case 1, and the regulation surfaces 34a, 34a are covered with the front lid. Since the notches 40, 40 provided on the front plate 11 of the magnetic recording medium 10 are exposed, the restricting surfaces 34a, 34a are notched in the receiving member on the magnetic recording device side when the main body case 1 is pushed into the magnetic recording device and loaded. It is received via the parts 40 and 40,
The body case 1 can be securely set to the regular pushing position.

Moreover, since the regulation surface 34a is dimensioned so as to be positioned in the middle of the wall thickness of the front plate 11, the notch 40 is in a closed state when not in use, and the notch 40 is interposed therebetween. It is possible to prevent dust from entering the front plate 11 from the outside and adhering to the tape 2. Therefore, the dust cover 2
In combination with 1, the dust can be prevented from entering the inside of the front lid 10 doubly, and the dustproof performance can be perfected. Furthermore, each regulatory aspect 3
4a is not exposed in the exposed state on the outer front surface of the front plate 11 through the notch 40. Therefore, firstly, the regulation surface 3
Even if 4a is damaged due to contact with the receiving member on the magnetic recording device side, it is difficult for the user to see the damage on the restricting surface 34a, and the unsightly appearance can be eliminated. Secondly, since each regulation surface 34a does not come into contact with another object before the front plate 11, the breakage due to the contact of the regulation surface 34a with another object can be prevented, and the tape for the magnetic recording device can be prevented. It is possible to prevent the occurrence of serious troubles such as the deviation of the pushing depth of the cartridge.

[0011]

DETAILED DESCRIPTION The drawings illustrate a small video tape cartridge. 1 and 2, reference numeral 1 is a main body case. This is a plastic upper and lower case 1a-1
b is screwed together to form a lid, and tapes 2
Has a tape reel 3 on which is wound. The tape reels 3 and 3 are located on the respective left and right drive shaft insertion holes transparently provided on the bottom wall 4 of the body case 1, and the center of rotation is pushed down by the leaf spring 7 fixed to the inner surface of the top wall 6 of the body case 1. Being energized. When the main body case 1 is loaded into the magnetic recording device, the drive shaft on the magnetic recording device side is moved from the lower side to the reels 3 through the insertion holes.
Fit and engage with the hub hole of. There are tape path restricting pins 9, 9 at the front left and right positions inside the main body case 1.
The tape 2 is led out to the front of the case via 9.

A front cover 10 for protecting the tape, which closes the front surface of the main body case 1, is pivotally mounted so as to be opened and closed. The front lid 10 includes a front plate 11 that closes the front surface of the main body case 1 across the left and right, connecting pieces 12 and 12 extending rearward from both left and right ends of the front plate 11, and both connecting pieces 1.
A plastic molded product having pivot shafts 13 and 13 projecting from the inner surface of 2 and 12 so as to face each other.
12 is externally fitted to the front end recessed portions 15a and 15a of the left and right side walls 15 and 15 of the main body case 1, and the pivots 13 and 13 are fitted into pivot support holes 16 and 16 provided in the recessed portions 15a and 15a, respectively. It is pivotally supported, and is rotatable about this pivot shaft 13 between a posture in which the front surface of the main body case 1 is closed and a posture in which the front face is opened. Has been done.

The front lid 10 when the tape cartridge is not used
Is closed and covers and protects the outer front surface of the tape 2. When the tape cartridge is loaded into the magnetic recording device, the front lid 10 is opened, and the tape loading member on the magnetic recording device side protrudes from below into the pocket 19 which is formed in a recessed shape in the central portion of the front edge of the body case 1. Then pull out the tape 2 to the front of the case. In addition, in the gap 20 between the front end recessed portion 15a of the right side wall 15 of the main body case 1 and the right side connecting piece 12 of the front lid 10, the front lid 10 is closed in a closed posture when the above-mentioned torsion spring 17 and the tape cartridge are not used. A means for locking the lid is incorporated.

At the location of the pocket 19, a dust cover 21 is swingably and pivotally connected to the inside of the front lid 10 via a shaft 22, and the dust cover 21 holds the lower side of the tape 2 when not in use. The inside and the opening upper surface of the pocket 19 are sealed to prevent dust from entering from the upper and lower opening surfaces of the pocket 19 and adhering to the tape 2. The dust cover 21 is connected to the cam grooves 23 provided on the left and right side surfaces of the pocket 19, and when the front lid 10 is opened, the dust cover 21 does not interfere with the tape 2 at all and moves upward together with the front lid 10. Moving. That is, FIG.
Further, in FIG. 4, dust cover mounting pieces 25, 25 are integrally hung from the upper end side of the front plate 11 at positions near both left and right sides of the front plate 11 of the front lid 10.
The shafts 22, 22 projecting from the left and right ends of the upper and lower intermediate portions of the dust cover 21 are pivotally supported on the shaft 25. Pin-shaped cam followers 2 from the left and right ends near the lower end of the dust cover 21.
6 and 26 are provided in a protruding manner, and the cam followers 26 and 26 are engaged and connected to the cam grooves 23 and 23, respectively.

In FIG. 5, the left and right side surfaces of the pocket 19 having the cam groove 23 are provided on the side wall 27 extending from the front portion of the upper wall 6 of the upper case 1a and the tape path regulating pin on the bottom wall 4 of the lower case 1b. 9 and a side wall 28 standing upright. When the upper and lower cases 1a and 1b are connected, the rear end surface 29 of the vertically extending side wall 27 and the forwardly stepped end surface 30 formed on the inner side surface of the standing side wall 28 on the pocket side are slightly wider than the diameter of the cam follower 26. And the rear end surface 29 and the stepped end surface 30 form the front and rear edges of the cam groove 23.

On the upper wall 6 of the upper case 1a, the rear end surface 29 of the side wall is formed.
A rectangular notch 31 continuous with the upper end of the cam groove 23 is formed toward the pocket 19 side. When the upper and lower cases 1a and 1b are joined to form a cam groove 23, the notch 31 is formed at the upper end of the cam groove 23. Are butt-connected and connected. That is, the upper end of the cam groove 23 is provided with the notch 3 on the upper surface of the upper case 1a.
It becomes an open state through 1. Through the notch 31, the cam follower 26 of the dust cover 21 is pushed from above to the cam groove 2
It is dropped into 3 and is engaged. A chamfered portion 32 having an upward spread shape is formed on the upper end edge of the stepped end surface 30 forming the rear edge of the cam groove 23, and the rear end edge 3 of the notch 31 is formed due to a manufacturing error.
Even when the stepped end surface 30 slightly protrudes forward from the step 3, the cam follower 26 can be smoothly slid into the cam groove 23 through the chamfered portion 32 without being caught by the upper end edge of the stepped end surface 30. .

In FIG. 5, the tape path restricting pins 9 and 9 whose outer peripheral surfaces are partially arcuate are integrally formed at the left and right outer positions of the pocket 19 from the front edge of the bottom wall 4 of the main body case 1 to be higher than the vertical width of the tape 2. It has been planted. Further, from the front end edge of the bottom wall 4 of the main body case 1, the pins 9 and the front end recessed portions 15a.
Ribs 34 for tape height regulation are integrally provided so as to extend between the ribs 5a and 5a. Thus, in the illustrated example, as shown in FIGS. 1 and 2, the upper and lower cases 1a and 1b are screwed at the front left and right two positions, the front and rear left and right central positions, and the rear left and right two positions. At each screw fastening point, as shown in FIGS. 4 and 5, a boss 36 having a screw insertion hole 35 is projectingly provided from the case bottom wall 4, and a boss 38 having a screw lower hole 37 is provided on the case upper wall 6 with a screw insertion hole. 35, and tapping screws 39 are inserted from the lower case 1b side into the insertion holes 35 and screwed into the screw holes 37, respectively.

When assembling the tape cartridge, first, the left and right tape reels 3 on which the tape 2 is wound on the lower case 1b are guided by guiding the tape 2 to a predetermined tape path. At this time, the tape 2 is guided and supported by the left and right tape path regulating pins 9 9 which are provided upright from the lower case 1b side. Next, the lower case 1b is covered with the upper case 1a, and the upper and lower cases 1a and 1b are screw-coupled with each other by the tapping screw 39 as described above. Then, in general, the front lid 10
The dust cover 21 is pivotally connected in advance via a mounting piece 25 and a shaft 22, and the front lid 10 is guided to the main body case 1 side from above and pivoted by fitting the pivot shaft 13 and the pivot hole 16. The cam followers 26 of the dust cover 21 are connected to each other.
Is inserted into the cam groove 23 on the main body case 1 side from above via the notch 31 and engaged.

The tape path regulating pins 9 and 9 are the lower case 1b.
Since it is erected from the side, the tape 2 can be assembled along the predetermined tape path by the pins 9 and 9 without the need for a temporary support member when assembling the tape. Therefore, the tape 2 passed through the front surface of the case is stretched without slack between the left and right tape path restricting pins 9, and the height of the tape is restricted by the interposition of the rib 34 in the illustrated example. As a result, since the front cover 10 has the dust cover 21, the front cover 10 is guided from the front side of the case and is not attached to the main body case 1 but is guided from the upper side of the case. It is possible to reliably prevent the upper end 21 of the tape 2 from abutting and interfering with the upper end edge of the tape 2, and to prevent the lower end edge portion of the tape 2 from being caught by the front lid 10 and the dust cover 21. The rib 34 not only regulates the tape height at the time of assembling the tape, but also loads the tape cartridge into the magnetic recording device and separates the tape 2 from the tape path regulating pin 9 by the vertical guide member on the magnetic recording device side. The height of the tape running is also regulated when guiding the running.

The left and right ribs 34 are provided so as to project upward from the front edge of the bottom wall 4 of the main body case 1.
The vertical front end face of No. 4 is a regulating surface 34a for pushing in and regulating the depth.
・ 34a. That is, on the front plate 11 of the front lid 10, the ribs 34, 34 restricting surfaces 34a.
The notches 40, 40 facing each other are formed so that when the tape cartridge is pushed into the magnetic recording device, the receiving member on the magnetic recording device side has the notches 40, 40.
The control surfaces 34a, 34a are received via the control surfaces, and the pushing depth of the main body case 1 into the magnetic recording device is restricted by two points on the left and right sides.

Further, the regulation surface 34a is positioned within the range of the thickness of the front plate 11 when the front lid 10 is in the closed posture. That is, each regulation surface 34a is located in the notch 40 between the inner rear surface and the outer front surface of the front plate 11. Therefore, even if the regulation surface 34a is repeatedly received by the receiving member on the magnetic recording device side and is damaged, the damage is not completely visible from the front outside. Further, each notch 40 is in a state of being closed by the rib 34 when not in use, and dust is removed through the notch 40 from the front lid 1.
It can be well prevented from penetrating inside 0 and adhering to the tape 2. At the same time, since the rib 34 functions as a reinforcing rib and the regulating surface 34a does not project from the outer front surface of the front plate 11, the regulating surface 3 by abutting against another object.
It is possible to effectively prevent breakage and damage of 4a.

Although the whole of the illustrated example is as described above, the present invention is not limited to this. For example, the tape path restricting pins 9 and 9 may also serve as screwing bosses. The upper and lower cases 1a and 1b may be joined at several points by ultrasonic welding. It is not necessary that the standing side wall 28 on the side of the lower case 1b having the forwardly facing stepped end surface 30 for forming the cam groove 23 is connected to the tape path regulating pin 9. Further, in the illustrated example, the side walls 27 and 28 provided on the upper and lower cases 1a and 1b are combined to form the cam groove 23, but the complete cam groove 23 is formed only by the side wall 28 which is provided upright on the lower case side. Naturally, the form to do is also considered. Furthermore, the upper surface plate 21a of the dust cover 21 is not limited to the left-right width that covers the upper surface of the pocket 19, but may also cover the upper surface of the main body case 1 including the upper surface of the pocket 19 across the left and right depending on the design and other circumstances.

In addition, in the illustrated tape cartridge, it is expected that the tape 2 will not come into contact with the tape path regulating pins 9 and 9 when the tape is running in the magnetic recording device, but only when the tape 2 is fast-forwarded and fast-returned. Tape 2 to pin 9
It is needless to say that the pin 9 may be used to guide the running of the tape 2 even during magnetic recording and reproduction, as a matter of course.

[Brief description of drawings]

FIG. 1 is an overall plan view.

FIG. 2 is a perspective view of the entire appearance.

3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is an exploded perspective view of a main part.

[Explanation of symbols]

 1 Main body case 1a Upper case 1b Lower case 2 Tape 3 Tape reel 4 Bottom wall of the main body case 9 Tape path regulation pin 10 Front lid 11 Front lid front plate 19 Pocket 21 Dust cover 34 Rib 34a Regulation surface 40 Notch

Claims (1)

[Claims] 1. A tape loading pocket 19 is provided in a central portion on the left and right of the front surface of the main body case 1, and a front lid 10 for closing the front surface of the main body case 1 across the left and right sides can be opened and closed. It is attached to the main body case 1 and the front lid 10 between the pocket 19
The dust cover 2 that closes the inner side including the lower side of the tape 2 and the upper surface of the opening of the pocket 19 in the opening area of the
1 is mounted so as to open and close in conjunction with the opening and closing operation of the front lid 10, and the front plate 11 of the front lid 10 is provided with cutouts 40 at the lower left and right sides.
40 are provided, and the pocket 19 is provided at the front edge of the bottom wall 4 of the main body case 1.
Restricting surfaces 34a, 34a for restricting the depth of pushing into the magnetic recording device at the left and right outer positions of the notch 4 respectively.
A tape cartridge characterized in that it is formed so as to face 0.40, and each regulation surface 34a is located in the middle of the thickness of the front plate 11.