JPH0743821Y2 - Digital audio cassette - Google Patents

Description

TECHNICAL FIELD The present invention relates to a digital audio cassette.

2. Description of the Related Art Conventional digital audio cassettes are shown in FIGS.
As shown in the drawing, an upper shell 1 and a lower shell 2 having a front edge 2'and a cutout 2 "are fixed to each other by screws, and upper and lower sheets 4 and 4 (however, the upper sheet is not shown). And a pair of hubs 5 and 5 rotatably arranged between the upper and lower shells 1 and 2, the magnetic tape 6 wound around both the hubs 5 and 5, and the left and right sides so that they can slide in the arrow A direction. The side edges are supported inside the left and right side walls of the lower shell 2, and a spring (not shown) imparts a rearward movement bias so that the pair of protrusions 8a, 8a abut on the peripheral surfaces of the hubs 5, 5. A hub brake 8 that is moved forward when the cassette is loaded on the deck, and a left and right side edges of the hub brake 8 that are slidably supported outside the left and right side walls of the lower shell 2 in the direction of arrow A. In addition, a forward biasing force is applied by a slider spring 9 which is preferably a leaf spring. Magnetic tape 6 by the upright portion 10a of the front edge when the cassette is detached from the deck have
A slider 10 for supporting the drawer portion 6a of the slider and adapted to be pushed backward when the cassette is loaded in the deck.
When the cassette is separated from the deck by being pivotally attached to the left and right ends of the front edge of the upper shell 1 and a closing bias is applied by a spring (not shown), the pull-out portion 6a of the magnetic tape 6 is pulled out.
Lid that covers the housing and is rotated or opened upward when the cassette is loaded in the deck to expose the drawer portion 6a.
11 and a window 1a for checking the remaining amount of tape formed on the upper shell 1.
, The slider spring 9 is of a cantilever type, and the supporting portion 2a for supporting it is the running of the magnetic tape 6 of the lower shell 2 as shown in FIG. Since the magnetic tape 6 is provided near the area, the magnetic tape 6
However, there is a problem that the magnetic tape 6 may be damaged by coming into contact with the supporting portion 2a and that it is difficult to take dust-proof measures in the running area of the magnetic tape 6. Further, in order to attach the spring 9, the supported portion of the spring 9 is fitted into the supporting portion 2a so as not to rotate, and the tip portion of the spring 9 is bent while the projection 10 on the front edge of the slider 10 is bent.
There was a problem that the installation work was very troublesome because it had to be hung on b. Further, since the spring 9 is of a cantilever type, its tip portion is easy to move up and down and the tip portion is in contact with the protrusion 10b only at one place, the spring 9 comes off from the protrusion 10b and the lower shell 2 and the like. There is also a problem that it is easily pinched between the slider 10 and the slider 10. Further, in order to solve the above-mentioned problems, the tip of the spring 9 may be fixed to the protrusion 10b, but still the slider 10 is given a certain turning force to move the slider 10. There was a fundamental drawback of the cantilever type, which caused creaking.

In view of the above problems, the present invention is capable of preventing damage to a magnetic tape by a slider spring, easily preventing dust in a traveling area of the magnetic tape, and easily attaching a slider spring. It is an object of the present invention to provide a digital audio cassette that prevents the slider from sliding off and the pinch between the lower shell and the slider and allows the slider to slide extremely smoothly.

In the digital audio cassette according to the present invention, a slider spring is fitted between a positioning boss provided at the center of the front edge of the lower shell having a front edge and a notch and a wall of the front edge of the lower shell. By forming a central bent portion and a pair of legs whose tip is slidably contacted with the upright portion of the front edge of the slider, and by interposing it between the upright portion and the front edge of the lower shell, The slider spring is completely separated from the running area of the magnetic tape, and the slider spring is installed by simply fitting it from above between the upright portion of the slider front edge and the front edge of the lower shell. The slider spring is configured so that the contact end of the slider spring with the upright portion of the front edge of the slider does not easily move up and down and the slider can move smoothly.

Embodiment Hereinafter, the present invention will be described in detail by referring to the embodiment shown in FIGS. 3 and 4 and the same members as those in the above-mentioned prior art will be designated by the same reference numerals. It is formed to extend over almost the entire length of the ten leading edges. Further, the slider spring 9 is formed in a V shape and is interposed between the upright portion 10a of the slider 10 and the front edge 2'of the lower shell 2 and at the center of the front edge 2'of the lower shell 2. The central bent portion of the slider spring 9 is fitted between the positioning boss 2b provided on the above portion and the wall of the front edge 2'of the lower shell 2 and sandwiched between the upper and lower shells 1 and 2. . or,
The tip of the slider spring 9 is bent back in an arc shape as is clear from the drawing.

The digital audio cassette according to the present invention is constructed as described above, and since the slider spring 9 is completely separated from the running area of the magnetic tape 6, the magnetic tape 6 is not damaged by the slider spring 9. It is also easy to take dust-proof measures in the running area. Also, the slider spring 9
Slide the slider 10 upright while slightly bending the tip of the slider outward.
The attachment of the slider spring 9 is completed simply by fitting it from above between the front edge of the lower shell 2 and 10a, so the attachment work is extremely easy. Further, since the pair of tip portions of the slider spring 9 are in contact with the upright portion 10a of the slider 10 and do not give a turning force to the slider 10, the movement of the slider 10 becomes smooth. Further, since the tip of the slider spring 9 is unlikely to move up and down, the slider spring 9 comes off and the lower shell 2 of the tip is removed.
No pinching between the slider and the slider 10 occurs.

Effect of the Invention As described above, the digital audio cassette according to the present invention does not damage the magnetic tape surface by the spring for the slider, easily protects the running area of the magnetic tape from dust, and easily installs the spring for the slide. Therefore, there is an important practical advantage that the slider spring can always move smoothly without the slider spring coming off or being pinched between the lower shell and the slider.

[Brief description of drawings]

FIG. 1 is a perspective view of a conventional digital audio cassette,
FIG. 2 is a plan view of the conventional example with the upper shell 1 removed, and FIG. 3 is a plan view of the digital audio cassette according to the present invention with the upper shell 1 removed.
The figure is a perspective view of the state in which the digital audio cassette of the above embodiment is disassembled into the lower shell 2 and the slider 10. 1 ... Upper shell, 2 ... Lower shell, 2 '... Leading edge, 2 "
...... Notch, 2b ...... Positioning boss, 4 ...... Lower sheet,
5 ... Hub, 6 ... Magnetic tape, 9 ... Slider spring, 10 ... Slider, 10a ... Upright part.

Claims (1)

[Scope of utility model registration request] 1. A digital audio cassette equipped with a slider, which is slidably mounted on a lower shell having a front edge and a cutout portion, and is biased forward by a slider spring. Is a central bent portion fitted between the positioning boss provided in the central portion of the front edge of the lower shell and the wall of the front edge, and the tip is folded back in an arc shape to center the front edge of the slider. It is composed of a substantially V-shaped leaf spring with a pair of legs slidably contacting a vertical portion formed continuously with the vertical portion, and is interposed between the vertical portion and the front edge of the lower shell. A digital audio cassette characterized by that.