JPH0618954Y2 - Storage box for tape cartridges - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a storage box used for storing and storing tape cartridges, and is an improvement in the pivotal support structure between the body and the lid.

[Conventional technology]

The basic configuration of the storage box to which the present invention is applied will be described with reference to FIG.
A pocket 13 for inserting and supporting a part of the tape cartridge A and the index card B is provided at the rear portion on the inner surface side of the lid 4, and the left and right side walls 14 and 15 of the pocket 13 are connected to the rear end portions 7a of the left and right side walls 7.8 of the body 1. -A lid 4 is fitted between 8a, and a lid 4 is pivotally attached to the body 1 so as to be freely opened and closed around a pivot shaft 2 and 3.

In such a storage box, as shown in FIG. 5, the inner surfaces of the left and right side walls 7 and 8 of the body 1 and the outer surfaces of the left and right side walls 14 and 15 of the lid 4 are in direct surface contact with each other and are in sliding contact with each other. Not only does the operation of opening and closing the lid 4 become heavy due to an unpleasant sound, but also while the lid 4 is being opened and closed frequently, the sliding surface of the lid 4 is scratched and the appearance becomes worse.

Therefore, as shown in FIG. 6, the left and right side walls 14 and 15 of the lid 4 are
On the left and right side walls 7.8 of the body 1, pivot shafts 2 and 3 slightly longer than the depth of the shaft holes 16 and 16 are provided so as to project from the shaft holes 16 and 16. By abutting the tips of 2.3 on the bottom wall 20 of each shaft hole 16, the pocket 13
It is known to form a slight gap S between the outer surface of the left and right side walls 14 and 15 and the inner surface of the left and right side walls 7 and 8 of the body 1 (Japanese Utility Model Publication No. 56-136371).

[Problems to be solved by the device]

However, in the conventional example shown in FIG. 6, the thickness of the left and right side walls 14 and 15 on the lid 4 side is naturally limited, and the shaft hole 16
Becomes shallower by the thickness of the bottom wall 20. In particular, since the bottom wall 20 receives the thrust load of the pivot shafts 2 and 3, the thickness of the bottom wall 20 cannot be made very thin. As a result, shaft hole 1
The depth of 6 became shallower, and when the storage box was dropped, the pivot shafts 2 and 3 came off the shaft holes 16 and 16 and were easy to disassemble. On the other hand, if the bottom wall 20 of the shaft hole 16 is made thin and the depth of the shaft hole 16 is large, a weak bearing structure that cannot withstand the thrust load is caused.

The object of the present invention is to provide a bearing structure that allows the pivotal shafts 2 and 3 on the body 1 side to be fitted as deeply as possible to prevent them from coming off and to withstand thrust loads sufficiently. To get a storage box.

[Means for Solving the Problems]

In the storage box of the present invention, the pivots 2.3 are projected from the inner surfaces of the left and right sidewalls 7 and 8 of the body 1, while the pivots are attached to the outer surfaces of the left and right sidewalls 14 and 15 of the pocket 13 of the lid 4. The shaft holes 16 and 16 into which 2 and 3 are inserted are provided. Thus, each axial hole 16 is formed such that the rear portion 16a of the inner peripheral surface thereof is biased closer to the outer surface 17b than the inner surface 17a of the rear side wall 17 of the pocket 13.

[Action]

A part of the inner depth of each of the shaft holes 16 and 16 is applied to the rear side wall 17 of the pocket 13, and the thrust load of the pivot shafts 2 and 3 is directly or indirectly received by the rear side wall 17.

[First Embodiment] FIGS. 1 to 3 show a first embodiment of a storage box according to the present invention.

In Fig. 2, the storage box of the present invention is a plastic body 1
And a plastic lid 4 pivotally attached to the left and right pivot shafts 2 and 3 so as to be rotatable.

In the body 1, a front side wall 6 and left and right side walls 7 and 8 are erected from the front side end and the left and right side ends of the bottom wall 5. On the inner surface of the bottom wall 5, anti-rotation pawls 11 and 11 that engage with the internal hub 10 and 10 via the drive shaft insertion holes 9 and 9 on the side of the tape cartridge A are provided on the left and right of the central portion. .

The lid 4 is formed with a pocket 13 in the rear portion on the inner surface side of the rectangular upper wall 12 into which the tape cartridge A and the index card B can be inserted and removed from the front, and the left and right side walls 14 and 15 of the pocket 13 are of the body 1. The left and right side walls 7.8 extending rearward from the rear edge 5a of the bottom wall 5 are fitted between the rearward extending portions 7a and 8a. Then, the pivot shafts 2 and 3 projecting from the left and right rear extending portions 7a and 8a are attached to the pocket 13
Round shaft holes 16 provided near the rear ends of the left and right side walls 14 and 15
・ By fitting in 16, the lid 4 and the body 1 are connected to the pivot shaft 2
-It is pivotally attached so that it can be opened and closed relatively around 3.

In FIGS. 1 and 3, the shaft hole 16 is formed to the depth of the thickness t of each of the left and right side walls 14 and 15 of the pocket 13. However, the rear portion 16a of the inner peripheral surface of each shaft hole 16 has a larger outer surface 17 than the inner surface 17a of the rear sidewall 17 of the pocket 13.
It is formed so as to be biased toward b, and a part of the bottom of the shaft hole 16 is closed by a part 17c of the rear wall 17 in the left-right direction. In the illustrated example, the inner surface 17 a of the rear side wall 17 coincides with the substantially central position of the shaft hole 16. Therefore, each shaft hole 16 penetrates like a half moon in a side view.

The pivot shafts 2 and 3 project from the inner surfaces of the left and right side walls 7 and 8 of the body 1 slightly longer than the depth of the shaft hole 16,
. 16 respectively, and the shaft end surfaces 2a and 3a thereof are received by a part of the end surface 17c of the bottom of each shaft hole 16, so that each inner surface of the left and right side walls 7 and 8 of the body 1 and the left and right side walls 14 of the pocket 13
A slight gap S is formed between each outer surface of 15.

When the bottom of the shaft hole 16 is configured in this way, the shaft hole 1
Since the depth of 6 can be formed as deep as the thickness t of the left and right side walls 14 and 15, the pivot shafts 2 and 3 are attached to the shaft holes 16 and 16.
You can't get out of it easily. Further, the thrust load can be sufficiently supported by the rear side wall 17. In addition, unlike the case where the shaft hole 16 is entirely formed in a penetrating shape, a part of the inner depth is closed, so that the flow of the plastic material is improved at the time of molding and a weld line is formed. It also suppresses and contributes to strength improvement.

[Second Embodiment] FIG. 4 shows a second embodiment of the present invention. In this case, each axial hole 16 has a depth slightly smaller than each thickness t of the left and right side walls 14 and 15 of the pocket 13. This is different from the first embodiment in that the inner side of the shaft hole 16 is formed with a thin bottom wall 20. However, other configurations such as the point that the rear portion 16a of the inner peripheral surface of the shaft hole 16 is formed closer to the outer surface 17b than the inner surface 17a of the rear side wall 17 of the pocket 13 are substantially the same as those of the first embodiment. .

According to the second embodiment, even if the bottom wall 20 is made thin so as to make the depth of the shaft hole 16 as deep as possible, the thrust load of the pivot shafts 2 and 3 is the same as that of the first embodiment. Since it is supported by the rear side wall 17, the bottom wall 20 does not break through.
Then, the bottom wall 20 is inserted into the pocket 13 through the shaft hole 16.
It also prevents dust from entering the inside. In addition, the presence of the bottom wall 20 makes the flow of the plastic material during molding
It is more favorable than that of the embodiment, and is advantageous in increasing the strength around the shaft hole 16 by eliminating the generation of weld lines.

[Effect of device]

According to the storage box of the present invention, the shaft hole 1 into which the pivot shafts 2 and 3 of the body 1 are fitted in the left and right side walls 14 and 15 of the pocket 13 of the lid 4.
Regarding the provision of 6 and 16, each axial hole 16 is formed so that the rear portion 16a of the inner peripheral surface is biased toward the outer surface 17b rather than the inner surface 17a of the rear side wall 17 of the pocket 13. Therefore,
The thrust load of the pivot shafts 2 and 3 can be sufficiently opposed by the rear side wall 17. Further, since the shaft hole 16 can be deeply formed to the wall thickness of the left and right side walls 14 and 15 or to a depth close to this, a bearing structure excellent in reliability in which the pivot shafts 2 and 3 do not come off can be obtained. Have advantages.

[Brief description of drawings]

FIGS. 1 to 3 show a first embodiment of a storage box according to the present invention. FIG. 1 is a cross-sectional plan view of essential parts, FIG. 2 is a perspective view with a lid open, and FIG. FIG. 4 is a perspective view of a main part of a lid. FIG. 4 is a cross-sectional plan view of essential parts showing a second embodiment of the present invention. FIG. 5 and FIG. 6 are cross-sectional plan views of essential parts showing different conventional storage boxes. 1 ... Body, 2.3 ... Pivot axis, 4 ... Lid, 7.8 ... Left and right side walls of body, 13 ... Pocket, 14.15 ... Left and right side walls of pocket, 16 ... Shaft hole, 16a: rear part of inner peripheral surface of shaft hole, 17: rear wall of pocket, 17a: inner surface of rear wall of pocket, 17b: outer surface of rear wall of pocket. A: Tape cartridge.

Claims (1)

[Scope of utility model registration request] 1. A lid 4 having a pocket 13 in which a part of a tape cartridge A is inserted and supported from the front side, is a pocket 1.
The left and right side walls 14 and 15 of 3 are attached to the left and right side walls 7 and 8 of the body 1.
It is fitted in between and is pivotally attached to the pivot shafts 2 and 3 so as to be freely opened and closed, and the pivot shafts 2 and 3 are projected from the inner surfaces of the left and right side walls 7 and 8 of the body 1, while Shaft hole 1 into which pivot shafts 2 and 3 fit
6 and 16 are provided on the outer surfaces of the left and right side walls 14 and 15 of the pocket 13, respectively, and the rear portion 16a of the inner peripheral surface of each shaft hole 16 is biased closer to the outer surface 17b than the inner surface 17a of the rear side wall 17 of the pocket 13. A storage box for a tape cartridge, which is characterized by being formed.