JPH0872961A - Tape cassette storage case - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent damage and deformation of the projections for positioning the tape cassette (for shock absorption). [Structure] A tape cassette housing case 1, a case main body 2 for housing a tape cassette 111, a lid 3 for opening and closing an opening of the case main body 2, and the case main body 2
Is integrally formed on the bottom plate 2a of the case main body 2
Supply reel 1 for tape cassette 111 stored inside
12 and the reel center hole 1 of the take-up reel 113
It is composed of protrusions 4 and 5 for positioning the tape cassette, which are hollow and penetrate into 14 and 115. The root portion 6 of each of the protrusions 4 and 5 is provided with a recess 11 for reinforcement that is curved in the radial direction.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is generally used for storing or transporting large and heavy tape cassettes such as digital video tape cassettes and digital data tape cassettes used in broadcasting stations. The present invention relates to a tape cassette storage case called a cassette carrying case.

[0002]

2. Description of the Related Art Commercially available tape cassettes have become large in size in order to improve image quality and extend recording time. For example, a tape cassette for digital recording / playback has a width of 366 m.
m, a vertical width of 206 mm, and a thickness of 33 mm,
Its weight is also extremely large.

As a tape cassette housing case for housing the above-mentioned tape cassette for business use, the one shown in FIG. 4 is known.

FIG. 4 shows a conventional tape cassette storage case 1.
It is a perspective view of 01.

The tape cassette housing case 101 includes a case body 102 for housing a tape cassette 111 such as a digital video tape cassette, and the case body 102.
The lid 103 for opening and closing the opening of the case body 1 and the case body 1
02, a pair of tape cassette positioning protrusions 10 formed integrally with the bottom plate 102a.
4, 105 are provided.

Protrusion 10 for positioning the tape cassette
4, 105 are formed in a cylindrical shape having a diameter smaller than the diameters of the reel center holes (hub holes) 114, 115 of the supply reel 112 and the take-up reel 113 of the tape cassette 111.

Then, when the tape cassette 111 is inserted into the case main body 102, as shown in FIGS.
5 is the supply reel 11 of the tape cassette 111
2 and the reel center hole 11 of the take-up reel 113
The tape cassette 111 is protected from a shock or the like at the time of dropping by entering into 4, 115 and restricting the movement of the tape cassette 111.

Incidentally, 116 is a magnetic tape, 117, 11
8 is a supply reel 112 and a take-up reel 1
13 upper and lower flanges, 119 and 120 are upper and lower shells of the tape cassette 111, 121 is a reel holder provided on the upper shell 119, 122 is a reel spring, and 1 is a reel spring.
23 is a reel plate.

[0009]

By the way, the conventional tape cassette storage case 101 is the same as the tape cassette 1 described above.
The protrusion 10 for positioning the tape cassette 10 when the tape cassette 11 is accidentally dropped while being transported in a housed state.
Strong impact force is applied to 4,105 (especially magnetic tape 1
Since the reel on which 16 is wound has a large weight, the impact force applied to the protrusion is also large), and there are the following problems.

(1) When a strong impact force is applied when dropped,
The root portions 106 of the protrusions 104 and 105 are damaged.

When the root portions 106 of the protrusions 104 and 105 are damaged, the protrusions 104 and 105 lose the tape cassette positioning function, and the tape cassette 11 is dropped when dropped.
Cause 1 breakage.

In particular, when the case body 2 is formed of plastic by blow molding, the projections 104 and 105 are formed.
Since the thickness T ₁ of the root portion 106 of the base is thinner than the thickness T ₂ of the other portions (in the case of blow molding, the base portion 106 whose shape changes rapidly is thinly drawn). In the extended state), the root portion 106 is easily damaged.

(2) When a strong impact force is applied, the protrusion 104,
As for 105, not only the root portion 106 is damaged, but also the body portion 107 above it may be deformed.

The present invention solves the above-mentioned conventional problems, prevents damage and deformation of the root portion of the projection for positioning the tape cassette, and protects the tape cassette from a stronger impact force. It is made for the purpose of providing.

[0015]

According to a first aspect of the present invention, there is provided a case main body for accommodating a tape cassette, a lid for opening and closing an opening of the case main body, and a bottom plate of the case main body. In the tape cassette storage case, a protrusion for positioning the tape cassette is provided, which is integrally formed with the bottom plate and has a hollow projection for positioning the tape cassette that enters the reel center hole of the tape cassette stored in the case body. A recess for reinforcement was provided at the root of the.

According to a second aspect of the present invention, in the tape cassette housing case of the first aspect, a reinforcing recess is formed from the root of the hollow projection for positioning the tape cassette to the tip of the body. .

According to a third aspect of the present invention, in the tape cassette storage case of the first or second aspect, the reinforcing recesses are provided on the circumferential surface of the projection for positioning the tape cassette at three locations at substantially equal angular intervals in the circumferential direction. The above is formed.

[0018]

In the tape cassette storage case according to the first aspect, the base portion of the projection for positioning the tape cassette is reinforced by the recess for reinforcement, and damage to the base portion due to impact or the like when dropped is suppressed.

In the tape cassette storage case according to the second aspect, the reinforcing recess prevents deformation of not only the root of the protrusion but also the body above the root.

According to another aspect of the tape cassette storage case of the present invention, even if the impact force is applied from any direction on the peripheral surface of the protrusion, any one of the recessed portions provided at three or more locations at substantially equiangular intervals. It exerts a reinforcing function to prevent damage and deformation of protrusions.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view of the tape cassette storage case of the present invention with the lid open. The tape cassette housing case 1 includes a plastic case body 2 for housing the tape cassette 111, a lid 3 for opening and closing an opening of the case body 2, and a bottom plate 2a of the case body 2. A pair of projections 4 and 5 for positioning the tape cassette are provided integrally with the bottom plate 2a.

The projection 4 for positioning the tape cassette
5 is the supply reel 11 of the tape cassette 111
2 and the reel center holes (hub holes) 114, 115 of the take-up reel 113 are formed in a cylindrical shape having a smaller diameter than the hole diameter.

Then, when the tape cassette 111 is inserted into the case main body 2, as shown in FIG. 2, the projections 4 and 5 for positioning the tape cassette are provided with the supply reel 112 and the take-up reel of the tape cassette 111. The tape cassette 111 is protected from an impact at the time of dropping by entering the reel center holes 114 and 115 of the 113 and restricting the movement of the tape cassette 111.

Incidentally, 116 is a magnetic tape, 117, 11
8 is a supply reel 112 and a take-up reel 1
13 upper and lower flanges, 119 and 120 are upper and lower shells of the tape cassette 111, 121 is a reel holder provided on the upper shell 119, 122 is a reel spring, and 1 is a reel spring.
23 is a reel plate.

The case body 2 and the projections 4 and 5 for positioning the tape cassette are formed in a hollow shape by blow molding.

Therefore, as explained in the section of the conventional example, the wall thickness T ₁ of the root portion 6 of the projections 4 and 5 is equal to the upper body portion 7
And it becomes thinner than the thickness T ₂ of the bottom plate 2a, consisting root portion 6 the mechanical strength is weak is easily broken.

While preventing damage to the root portion 6,
It is the recess 11 for reinforcement that prevents the body portion 7 from being deformed.

As shown in FIG. 1, the reinforcing recess 1 is formed.
The reference numeral 1 denotes an arcuate shape on the peripheral surfaces of the hollow tape cassette positioning projections 4 and 5 from the root portion 6 to the tip of the body portion 7 and in a direction perpendicular to the bottom plate 2a. It is formed by recessing in.

The reinforcing recess 11 is formed in an arcuate surface having a curvature smaller than the radius of the cylindrical tape cassette positioning projections 4 and 5.

Therefore, the total length of the reinforcing recess 11 in the circumferential direction is larger than that in the case where the recess 11 is not formed, whereby the mechanical strength of the part where the recess 11 is formed is higher than that of the other part. Is also reinforced.

The reinforcing recesses 11 are formed at three locations on the circumferential surface of the cylindrical tape cassette positioning projections 4 and 5 at equal angular intervals (120 °).

The tape cassette storage case 1 of the embodiment is constructed as described above.

Therefore, the portion of the lower portion of the recesses 11 ... 11 located at the root portion 6 of the projections 4, 5 reinforces the root portion 6 and a strong impact force is applied to the projections 4, 5. Also in this case, the root portion 6 is prevented from being damaged.

The portions of the projections 4, 5 above the recesses 11 ... 11 located on the body portion 7 reinforce the body portion 7 and a strong impact force is applied to the projections 4, 5. Even if
The body portion 7 is prevented from being dented or bent.

Further, the depressions 11 ... 11 have an angle of about 120 °.
Since the protrusions 4 and 5 are formed at three places on the peripheral surface with an angular interval of, even if an impact force is applied from any direction of the protrusions 4 and 5, at least one of the three protrusions The recess 11 effectively acts to prevent damage to the root 6 of the projections 4 and 5 and deformation of the body 7.

In the embodiment, the case where three recesses 11 ... 11 are formed with an angular interval of 120 ° is shown.
The number of recesses 11 may be one, two, or four or more.

The width of the recess 11 is set to an appropriate value in consideration of the diameters of the protrusions 4 and 5.

Further, the shape of the recess 11 may be a shape other than the arc shape as long as it does not hinder the molding.

[0040]

The tape cassette storage case of the present invention has the following effects.

(1) In the tape cassette storage case of claim 1, the root portion of the projection for positioning the tape cassette can be reinforced to prevent the root portion from being damaged by an impact force when dropped. .

(2) In the tape cassette housing case of claim 2, it is possible to suppress damage to the root portion of the projection for positioning the tape cassette, and to suppress dents and deformations of the body portion above the root portion. .

(3) In the tape cassette housing case of claim 3, even when an impact force is applied in any direction of the projection for positioning the tape cassette, three or more recesses formed at substantially equiangular intervals are formed. At least one of them effectively acts to prevent damage to the root portion and deformation of the body portion.

[Brief description of drawings]

FIG. 1 is a perspective view of a state in which a lid is opened.

FIG. 2 is a cross-sectional view of a state in which a tape cassette is stored.

FIG. 3 is an enlarged cross-sectional view of a main part.

FIG. 4 is a perspective view of a conventional example.

FIG. 5 is a cross-sectional view of a state in which a conventional tape cassette is stored.

FIG. 6 is a cross-sectional view showing a problem of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Tape cassette storage case 2 ... Case main body part 2a ... Bottom plate 3 ... Lid part 4, 5 ... Protrusion for positioning tape cassette 6 ... Root part 7 ... Body part 11 ... Reinforcement recess 111 ... Tape cassette

Claims (3)

[Claims] 1. A case main body for accommodating a tape cassette, a lid for opening and closing an opening of the case main body, and a bottom plate of the case main body formed integrally with the bottom plate. The tape cassette has a hollow protrusion for positioning the tape cassette that is inserted into the center hole of the reel of the tape cassette housed in the case body. The protrusion for positioning the tape cassette has a recess for reinforcement at its root. A tape cassette storage case that is characterized by: 2. The reinforcing recess according to claim 1, wherein the reinforcing recess is provided on the circumferential surface of the hollow tape cassette positioning projection, from the root to the tip of the body.
A tape cassette storage case characterized by being formed. 3. The reinforcing recess according to claim 1 or 2, wherein the reinforcing recesses are provided at three or more locations on the peripheral surface of the projection for positioning the tape cassette at substantially equal angular intervals in the circumferential direction. A tape cassette storage case.