JPS6018388Y2 - case for cassette - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cassette case suitable for use in transporting commercial cassettes such as U-Matic.

Generally, when transporting a tape cassette containing a reel of tape wound therein to, for example, a software manufacturer, etc., it is necessary to move the tape so that the tape wound around the reel in the tape cassette does not loosen. There is.

In the past, a reel rotation prevention device as shown in FIG. 1, for example, has been proposed in order to eliminate such inconveniences as tape slack and damage to the tape.

That is, two detents 2 and 3 are provided on one surface of a thin substrate 1 by press molding.

These anti-rotation parts 2 and 3 are arranged at a predetermined interval so as to correspond to the take-up side and supply side reels 4 in the tape cassette 5 shown in FIG. and extending portions 2b and 3b extending upward from the base portions 2a and 3a.

4a is a bub of the cassette 4, and 4b is a flange.

The extending portion 2b of the detent portion 2 corresponding to the take-up reel 4 has a substantially triangular shape, and is fitted into the cylindrical bub 4a of the reel 4 to form a portion where both abut. The anti-rotation effect is achieved by the frictional force.

Also, the extending portion 3 of the rotation stopper 3 corresponding to the supply reel 4
A protrusion 3c is provided on the upper surface of b, and when the extension part 3b is fitted into the bubble 4a of the reel 4, the protrusion 3c is engaged with the reel driving hole 4c formed at the bottom of the bubble 4a. The rotation of the reel 4 is prevented by matching the rotation of the reel 4.

By the way, in the case of a conventional device with such a configuration, when a large force is applied from the top surface 5a of the tape cassette 5 in the direction of the arrow shown in FIG. There is an inconvenience that the tape cassettes 4 are warped, and this phenomenon becomes noticeable when a large number of tape cassettes 5 are stacked and a load is applied from above, or when the tape cassettes 5 are dropped.

As shown in FIG. 4, the entire structure is almost box-shaped, and the reel rotation prevention parts 2 and 3 are made of a fairly soft material such as foamed polyethylene and are slightly larger than the inner diameter of the bubble 4a of the reel 4. However, when inserting the tape cassette into the case, it requires a relatively large attachment force, resulting in poor work efficiency and overall problems. However, it has the disadvantage of high cost.

The present invention has been developed in view of this point, and is designed to prevent deformation of the tape cassette 5 when a load is applied to it.

An example of the cassette case according to the present invention will be described below with reference to FIG. 5 and subsequent figures.

That is, in the case 10 according to the present invention, the bottom surface 11 faces (or contacts) the bottom surface 5b of the tape cassette 5, and at least one pair of side walls 5c and 5 of the tape cassette 5.
d and both side parts 12a and 12b standing perpendicularly to the bottom part 11; It has a pair of detents 13a and 13b to which a biasing force is applied, and each of these parts 11.12a, 12b (preferably including the pair of detents 13a, 13b) is made of a flexible material. Each of them is hollow and integrally constructed by so-called blow molding.

In this case, the detent parts 13a and 13b have the same shape as shown in the figure, that is, the base part 14, the extension part 15 configured to be biased upward from the base part 14, and the extension part 15 formed at the upper end thereof. This is a case where the formed waist extension part 15 is formed in a bellows type with the projections 16.

As is clear from FIGS. 5 and 6, the case of this example has both ends of the left and right side parts 12a and 12b (the case 10
Continuous front and rear side parts m7a and 17b are formed at both ends in the front and rear direction of the tape cassette 5, respectively, and these are the front and rear sides 5e and 5f of the tape cassette 5.
The tape cassette 5 is in such a state that it is wrapped around the tape cassette 5 from its left and right sides to its front and rear sides.

Further, by making the bending formation (the shape of the corner portion shown in FIG. 6) of the front side portion 17a and the rear side portion 17b different from each other with respect to the left and right side portions 12a and 12b in the front and back directions, the tape cassette 5 is When storing, I try to decide the front and back.

Incidentally, the bottom part 11 has surgical parts 18a and 18b cut inwardly in the front and back thereof. Therefore, when the tape cassette 5 is attached to the case 10 according to this embodiment, a part of the bottom surface 5b of the tape cassette 5 is exposed.

By configuring and placing the exposed portion in this way, the tape cassette 5 can be easily taken out from the case 10.

Further, the bottom surface 11 of the case 10 has reinforcing ribs 19 and 20 on the upper and lower surfaces, respectively.

The reinforcing ribs 19 on the upper surface are formed by grooves having a substantially semicircular cross section in this example, and the reinforcing ribs 20 on the lower surface are formed by protrusions having a substantially semicircular cross section in this example. Moreover, those on the bottom surface are arranged vertically and horizontally, as shown by dotted lines in FIG.

Furthermore, protrusions 21a and 2mb are formed along the left and right edges of the lower surface of the bottom surface portion 11, respectively, and the height (H) of the protrusions from the bottom surface is determined as will be described later.

The reinforcing ribs 19° 20 and the protrusions 2ma, 2mb are both formed integrally with the bottom portion 11 at the same time by the blow molding described above.

FIG. 8 is a linear cross-sectional view of a case formed by blow molding.

Furthermore, as the material of the case according to the present invention, synthetic resin such as polyethylene or polypropylene can be used, and it is formed into a hollow shape by blow molding, but at least a part of the case is provided with ventilation holes (not shown). It is connected to the outside air.

Therefore, when external pressure is applied to this case, that part deforms7, and part of the air inside the case is exhausted to the outside air.When the external pressure is released, the deformed part returns to its original state due to the elasticity of the white self. , outside air will be drawn into the case.

Furthermore, semicircular recesses 22a and 22b are provided on the outer surfaces of the left and right sides 12a and 12b of the case 10, respectively, so that they can be used to hold fingers etc. when lifting the case 10. is being done.

According to the case 10 according to the present invention described above, when the tape cassette 5 is attached to the case 10, the bottom surface 5b of the cassette 5 is brought into contact with the bottom surface 11 of the case 10 as shown in FIG. and 13b are inserted into the reel hub 4a of the cassette 5, respectively.

At this time, the base portions 14 of the detent portions 13a and 13b come into contact with the lower surface of the flange 4b of the reel 4 and push it up.

Also, at this time, the left and right sides 5c and 5d of the cassette 5 are in contact with or opposite to the left and right sides 12a and 12b of the case 10 to protect them.

Since the anti-rotation portions 13a and 13b are each given an upward biasing force, when the cassette 5 is attached to the case 10 and the groove 4 in the cassette 5 rotates due to vibration or the like during transportation, the locking portions Protrusion 16 in matching hole 4C
Since the reel 4 is engaged, the reel 4 does not rotate at all after that.

Furthermore, as shown in FIG.
Assuming that an external force is applied in the direction of the arrow from a, case 10
Since the bottom part 11 of the is formed in a hollow shape, the base part 14 of the rotation stopper part 13a or 13b or both of them is in the tenth position.
As shown in the figure, it can be deflected downward, that is, the upper surface of the bottom part 11 of the case 10 can be deformed.
The roll 4 in the cassette 5 is not deformed as shown in FIG.

Therefore, the reel 4 does not warp, and the entire case 10 is formed in a hollow shape, so even if an impact is applied to the case 10 from the outside during transportation, for example, the case 10 will not bend. It can absorb most of the impact, and does not give a strong impact to the cassette.

Further, although both the left and right sides of the cassette 5 are protected by the presence of the left and right side parts 12a and 12b, as shown in the figure, front and rear wall parts 17a and 17b are connected to the left and right side parts 12a and 12b.
By providing the length Ll of the front and back of the skein l-5
is smaller (I4<L) than the deflection of the case 10, 2 (see Figure 6 for both), and when multiple cases 10 with cassettes 5 attached are placed in a bag or carton,
The front and rear surfaces of the cassette 5 do not come into direct contact with these bags, and these front and rear surfaces can also be almost certainly protected.

Further, the cases 10 are formed so that they can be stacked with each cassette 5 attached as shown in FIG. 11.

In this case, as shown in FIG.
The top surface of the case 10 is the bottom surface portion 11 of the case 10 placed thereon.
The height H of the protrusion 21a and 2 mb is selected so that it comes into contact with the top of the reinforcing rib 20 protruding from the lower surface of the ridge.

As explained above, according to the present invention, when force is applied from the top surface 5a of the cassette 5, this can be effectively absorbed by the bottom surface 11 of the case 10, and therefore the reel 4 will not be warped at all. It has no characteristics.

In the above description, the rotation prevention parts 13a and 13b are also constructed by blow molding integrally with the other bottom surface parts 11, etc., but the rotation prevention parts 13a and 13b are constructed separately from the other parts. After it is formed, it can be bonded to the bottom surface 11 to form a "C" shape, and there is no need to form it into a bellows type structure as shown in the drawings.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a detent device replacing a conventional case, Fig. 2 is a sectional view showing an example of its usage state,
FIG. 3 is a sectional view illustrating its deformed state, FIG. 4 is a perspective view showing another conventional example, FIG. 5 is a perspective view showing an example of the case according to the present invention, and FIG. 6 is a plan view thereof. Fig. 7 is a front view, Fig. 8 is a partial cross-sectional view, Fig. 9 is a cross-sectional side view of the cassette in use, Fig. 10 is a side view showing its deformed state, and Fig. 11 is a stacked state. FIG. 4 is a reel, 5 is a cassette, 10 is a case, 11 is a bottom part, 12a and 12b are both side parts, and 13a913b is a rotation stopper part.

Claims (1)

[Scope of utility model registration request] A bottom surface facing or in contact with the bottom surface of the tape cassette, and both sides standing perpendicularly to the bottom surface so as to be in contact with at least one pair of both side walls of the tape cassette, and each of these parts , each made of a flexible material into a hollow shape and integrally constructed by blow molding, and inserted into the bubble of the reel of the tape cassette on the upper surface of the bottom part,
Further, a rotation stopper is attached to which a biasing force is applied upward from the upper surface, and a protrusion that engages with a retaining hole formed in the bub of the reel of the tape cassette is attached to the upper end of the rotation stopper. A cassette case characterized by: