JP2581400Y2 - Recording and playback cartridge - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing cartridge in which a recording / reproducing medium, for example, a tape-shaped or disk-shaped recording medium is accommodated in a case.

[0002]

2. Description of the Related Art Generally, an information recording carrier is housed in a case so as to prevent dust or dirt from being scratched during handling, and an insertion hole provided in the case, such as a rotary drive shaft and a recording / reproducing head, is provided. A shutter is provided to cover when not in use and to be opened when in use. The shutter in the conventional cartridge has a substantially U-shape straddling one end surface of the case, is made of a stainless steel plate or a synthetic resin, or is connected to a slider, and the shutter is easily deformed. Therefore, a guide member for guiding the free end of the shutter slidably is provided in the case and incorporated.

[0003]

Conventionally, the guide of the free end of the shutter is provided by attaching a metal plate to the outer surface of the case with a double-sided adhesive tape, attaching a resin plate to the outer surface of the case, or providing the case with the case. There are some types of guides, such as ones that are guided by protrusions.However, the cost of using a structure with a metal plate or resin plate attached is extremely high.For those that are guided by protrusions, it is necessary to make holes in the case to form the protrusions. In the case of a metal plate, there is a problem that the case is shaved and fine powder is generated, which has an adverse effect, and that external dust and dust easily enter the inside of the case. The present invention is intended to precisely eliminate these conventional disadvantages, to prevent the deformation of the shutter, to guarantee a smooth sliding operation, to greatly improve the slidability and assemblability of the shutter, and It is another object of the present invention to provide a safe and reliable recording / reproducing cartridge in an inexpensive form that ensures prevention of case shaving, prevents intrusion of dust, and the like.

[0004]

This invention Means for Solving the Problems] is recorded in the case 2 for containing the regeneration medium 1 to form a slide area 2 ₁ of the shutter 3, the said slide area 2 ₁ provided with a shutter 3 slidably in cartridge configured to open and close the front opening 7, 8 in the case 2, the shutter 3 is configured substantially U-shaped cross section, it is provided along the sliding direction of the shutter 3 in the slide area 2 ₁ Guide groove 1
1 is formed at one end of the shutter 3 and a bent front edge of the U-shaped bent portion 10 is
The shutter 3 is disposed at a position where the shutter 3 does not contact the case with respect to the direction of assembly and insertion into the case 2, and the guide groove 1 is provided.
1 so as not to contact the inner surface.

[0005]

The U-shaped bent portion 10 at one free end of the shutter 3 is held and arranged under the state of being fitted into the concave groove 11 on the case side, and the free end of the shutter is pressed down without being lifted up and guided. The shutter is moved to open and close insertion holes such as a rotary drive shaft, a recording / reproducing head case reference hole, and a capstan insertion hole, thereby preventing deformation and lifting of the shutter.
Moreover, the edge of the bent portion slides without contacting the case,
It is used without the problem of shaving the case and generating fine powder.
In addition, the guide groove 12 for guiding the other end of the shutter plate of the shutter is covered with the guide piece 13 provided on the case, so that the engagement state is maintained, so that dust and the like can enter the case. The recording medium 1 is blocked and used safely without affecting the stored recording medium 1.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 4 by using a DCC type cartridge as an example. Referring to FIGS. slide area 2 ₁ is formed, the the slide area 2 ₁ provided with a shutter 3 slidably opening in the case 2 example, the drive shaft insertion hole 4, case positioning holes 5, capstan insertion holes 6, the front Openings 7, 8
A cartridge configured to open and close the opening, such as, the shutter 3 is configured substantially U-shaped cross section, the guide groove 11 provided along the sliding direction of the shutter 3 in the slide area 2 ₁ The bent leading edge of the U-shaped bent portion 10 to be engaged is disposed at a position where the shutter 3 does not come into contact with the case in the assembly insertion direction of the shutter 3 into the case 2, and does not come into contact with the inner surface of the guide groove 11. It is like that.

In this case, the shutter 3 is formed by bending a metal plate. One end of the shutter abutting on the front surface of the case is folded or rolled up to form a bent portion 10 for locking. and the other end Yes in fitted into the case through the sliding area 2 communicates slit-like guide groove 12 provided in the ₁ as the leading end portion 3 ₁ which stepped, the shutter 3 is case 2 A spring (not shown) provided inside the housing allows it to be opened and closed by being urged in the closing direction. As the guide groove 12, the a stepped portion formed along the slide area 2 ₁ of one edge, the guide piece is engaged supported by dive the free end of the shutter 1
3 are protruded.

The bent portion 10 is provided with its edge turned back. When the shutter 3 is pushed into the case 2 and fitted into the shutter 3, care must be taken so that the cut surface of the edge does not hit the case. Then, the case was shaved to prevent the generation of fine powder, and even after the shutter was assembled, the case was finished with a turn that did not come into contact with the case 2 at the time of the sliding operation, or the case was bent so as not to be rolled up and appear on the surface. The part can be applied to case 2.

[0009] In the embodiment of FIG. 5, a bent portion 10 ₁ involving the leading edge of the shutter 3, and a bent tongue 10 ₂ protruding from the middle of opposing shutter the bent portion 10 ₁ The bent portions 10 ₁ and the bent tongues 10 ₂ are slidably fitted into the guide grooves 11 ₁ and 11 ₂ provided on the case 2 side, respectively, and the edge of each portion does not contact the case. Thus, the case is not scraped, and the shutter 3 is easily slipped on the contact surface of the case 2.

In the embodiment shown in FIG.
To bend the distal edge, bent along the recessed portion of the guide groove 11 ₃ formed on the case 2, which has a bent portion 10 ₃ folded back to the outside, easily engaged with the groove 11 _3, and A case shaving prevention form can also be adopted. In any of the embodiments, when the shutter 3 is pushed into the case,
It is designed so that it can be slid and engaged without shaving the case surface, so that it can be inserted while pushing and expanding the shutter 3 as necessary, and fitted so that there is no play between the case 2 and the case 3. .

The case 2 uses a box body composed of an upper case and a lower case, and a pair of hubs 14 around which the tape-shaped recording / reproducing medium 1 is wound can be rotated around the hub fitting peripheral wall 15. A tape guide 16 of a roller disposed in a tape running path running between the hubs 14, 14;
A partition wall 17, a guide piece 18, and a front outer wall 19 are integrally provided, and the front outer walls 19, 19 are formed with a front opening 7 and a central opening 8 at an interval. Capstan insertion holes 6 are formed in parallel with the holes 5, and window holes corresponding to these are provided in the shutter 3 as necessary.

The illustrated example is an example of a tape cassette, but the present invention can be applied to an example of a disk cartridge such as an optical disk or another hard disk.

[0013]

According to the present invention, the shutter has a substantially U-shaped cross section, and a U-shaped bent portion which engages with a guide groove provided in the sliding area of the case along the sliding direction of the shutter. The shutter is formed at a part of the shutter, and the bent front edge of the U-shaped bent portion is disposed at a position that does not come into contact with the case with respect to the direction of assembling and inserting the shutter into the case, and contacts the inner surface of the guide groove. By not doing so, the fitting and locking grooves can be integrally formed at the same time when the case is formed, so that the entire assembly including the installation of the shutter is easy and the productivity is enhanced, and the shutter is pushed into the case. At the time of assembling when sliding in or when sliding the shutter open and close, the case surface can be shaved and the sliding can be smoothly performed without generating dust, and the edge of the bent portion of the shutter is also formed by the guide groove when sliding. Touch inner surface There is no danger of shaving the case, so there is no danger of shaving the case, and furthermore, it prevents the deformation of the shutter, prevents the intrusion of dust etc. after the shutter is mounted, is safe, has good slidability of the shutter, and stably opens and closes the shutter. Smooth operation, no lifting of the shutter, greatly improved reliability, high mechanical strength, excellent durability, safe handling, good shutter connection, stored information record carrier It is safe to use with no risk of adverse effects on the device or deterioration of the appearance of the case.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a bottom view of the embodiment of FIG.

FIG. 3 is an enlarged vertical sectional view of a part taken along line II of FIG. 1;

FIG. 4 is a plan view of a lower case showing the inside of the case of the embodiment.

FIG. 5 is an enlarged longitudinal sectional view of a part of another embodiment taken along line II of FIG. 1;

FIG. 6 is an enlarged vertical sectional view of a part of another embodiment taken along line II of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Case 2 Tape 2 ₁ Slide area 3 Shutter 4 Drive shaft insertion hole 5 Case positioning hole 6 Capstan insertion hole 7 Opening 8 Opening 10 Locking convex part 10 ₁ Bent part 10 ₂ Bent tongue part 11 Guide concave Groove 11 ₁ concave groove 11 ₂ concave groove 11 ₃ concave groove 12 guide concave groove 13 guide piece 14 hub 16 tape guide

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-3-3181 (JP, A) JP-A-4-90076 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G11B 23/087 520

Claims (3)

(57) [Scope of request for utility model registration] 1. A case 2 for accommodating the recording medium 1 to form a slide area 2 ₁ of the shutter 3, and a shutter 3 slidably to said slide area 2 _1, Case 2
To open and close the front opening 7, 8 in the in the cartridges configuration, the shutter 3 is configured substantially U-shaped cross section, the guide concave provided along the sliding direction of the shutter 3 in the slide area 2 ₁ A U-shaped bent portion 10 that engages with the groove 11 is formed at one end of the shutter 3, and the bent front edge of the U-shaped bent portion 10 is connected to the case 2 by inserting the shutter 3 into the case 2. A recording / reproducing cartridge, wherein the cartridge is arranged so as not to contact the case and does not contact the inner surface of the guide groove 11. Is wherein said shutter 3, a bent portion 10 ₁ formed by bending the one shutter plate tip and bent tongues 10 ₂ protruding from the middle of the shutter 3 opposed to the bent portion 10 ₁ And grooves 11 ₁ and 11 ₂ provided on the case side, respectively.
The cartridge according to claim 1, wherein the cartridge is slidably fitted in the cartridge. 3. The bent portion may be a folded or rolled-up portion of a shutter end abutting on the slide area 2 side of the case 2 so that an edge of the bent portion does not face an inner surface of the concave groove. 3. The cartridge according to claim 1, wherein a gap is formed between the cartridge and the inner surface of the groove.