JPH08287647A - Tape cartridge - Google Patents

Abstract

PURPOSE: To prevent a fingertip from being erroneously injured and a tape cartridge from being dropped at the time of handling the tape cartridge by preventing the fingertip or clothes from being caught by chamfering the top part of an upper cover. CONSTITUTION: A front cover 7 and an upper cover 8 to interlockingly open/ close are provided on the front part of a main body case 1. At the time of closing the cover, rear corner parts 21 on both sides of the rear edge of the upper cover 8 are made so as to position on the horizontal outer sides of a step-down surface 20 which is provided on the horizontal side wall of the front part of main body case 1. A chamfered surface 22 for removing a top end of the rear corner part 21 of the upper cover 8 is formed into the curved surface. Further, the chamfered surface 22 is formed out of one or more planes. By this constitution, the fingertip and clothes are not caught nor injured even though they are allowed to be in contact with the chamfered part 22 provided on the rear corner part 21 of the upper cover 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cartridge having a front case and a top cover for protecting a tape on a front portion of a main body case.

[0002]

2. Description of the Related Art A tape cartridge of this type is disclosed, for example, in Japanese Unexamined Patent Publication No. 7-29353, in which a pair of support shafts are provided on the left and right connecting plates of the front cover, and the front cover is attached to the main body case via the support shaft. It is pivotally supported and supports the entire front lid so that it can open and swing. The upper lid is connected at its front both sides to the upper portion of the front lid in a bendable manner. Further, a pair of slide pins are provided on the left and right guide pieces of the upper lid, and these are guided by a V-shaped guide groove provided on the front side wall of the main body case. When the front lid is fully opened, the upper lid rides above the upper wall of the main body case. Since it is necessary to secure a movement area of the guide piece when opening and closing the upper lid, a stepped-down surface is formed on the front side lateral wall of the main body case, and a guide groove is provided therein.

[0003]

As described above, in the tape cartridge in which the step side drop surface is provided on the front side wall of the main body case, the corners on both sides of the rear edge of the upper lid in the closed state of the side cover of the step side drop surface. It is located outwardly in a protruding state. Moreover, the rear corner is sharply pointed. Therefore, when handling the tape cartridge, a fingertip or clothes may be caught on the rear corner. In some cases, it may cause scratches.

An object of the present invention is to prevent the fingertips or clothes from catching on the rear corners of the upper lid even if the fingertips or clothes come into contact with the rear corners of the upper lid during handling. To provide.

[0005]

To this end, according to the present invention, as shown in FIG. 1, a front cover 7 and a top cover 8 which are opened and closed in conjunction with each other are provided on the front part of a main body case 1, and the top cover 7 is opened when the cover is closed. In the tape cartridge in which the rear corners 21 on both sides of the rear edge 8 are located laterally outward of the step-down surface 20 provided on the front lateral side wall of the main body case 1, the rear corners 21 are formed on the rear corners 21 of the upper lid 8. It is characterized in that a chamfered surface 22 for removing the tip apex of the portion 21 is formed. Specifically, the chamfered surface 22 is formed as a curved surface. Further, the chamfered surface 22 is formed by one or more flat surfaces.

[0006]

The chamfered surface 22 provided on the rear corner 21 of the upper lid 8 is
Even if fingertips or clothes come into contact with the rear corner portion 21, they should not be caught in the rear corner portion 21. If the chamfered surface 22 is formed as a curved surface, even if the rear corner portion 21 is intentionally rubbed against the skin, it is not damaged.

[0007]

According to the present invention, the rear corner portion 21 of the upper lid 8 is provided with the chamfered surface 22 for removing the apex of the tip so that fingertips or clothes are not caught on the rear corner portion 21. It is possible to avoid a situation where the fingertip is accidentally scratched or the tape cartridge is removed during handling.

[0008]

1 to 4 show an embodiment of a tape cartridge according to the present invention. This tape cartridge is for a video, and its main body case 1 is made by screwing upper and lower plastic cases together in a lid-fitting manner, and a pair of reels 3 around which a tape 2 is wound are rotatably arranged inside the left and right sides of the case. I am doing it. The tape 2 pulled out from one reel 3 is guided by the tape guides 5 provided at the front left and right tape outlets 4 of the main body case 1 and wound on the other reel 3.

A tape loading pocket 6 is provided in the center of the front surface of the main body case 1, that is, between the left and right tape outlets 4. The upper and lower surfaces and front surface of the pocket 6 are open. The tape 2 led out to the front surface of the main body case 1 is covered and protected by the front lid 7 and the upper lid 8 when not in use.

The front lid 7 includes a pocket 6 and a tape outlet 4.
A front plate 10 that covers the front surface of the main body case 1 including the front surface of the opening of the left and right sides, and a connecting piece 11 that is integrally connected so as to extend from the left and right ends of the front plate 10 to the rear of the case. The support shafts 12 are provided on the inner surface of the member 11 so as to project inwardly. Both left and right connecting pieces 11,
It is located along the outer side of both lateral side walls of the front part of the main body case 1, and pivotally supports the support shaft 12 in shaft holes provided in each lateral side wall. As a result, the front lid 7 can be opened and closed about the left and right support shafts 12 between the positions where the front surfaces of the left and right tape outlets 4 and the pocket 6 are closed and the upper open position. A torsion coil spring 13 is attached to one of the support shafts 12 of the front lid 7 (see FIG. 3), and the spring 13 constantly urges the front lid 7 to rotate in a closed posture.

As shown in FIG. 3, the upper lid 8 is a top plate 14 that covers the upper surface of the pocket 6 and the upper walls of the left and right tape outlets 4.
And a pair of guide pieces 15 continuously extending downward from the left and right ends of the upper plate 14, and slide pins 16 are provided inwardly facing each other on the inner surfaces of the rear ends of both guide pieces 15. The upper lid 8 is interlocked with the opening / closing operation of the front lid 7, and the position where the upper surface plate 14 closes the upper surface of the pocket 6 and the pocket 6
The opening / closing operation is performed from the upper surface of the opening to the open position where the main body case 12 is retracted to the top wall. Therefore, the front ends of both connecting pieces 15 of the upper lid 8 are rotatably connected to the left and right end surfaces of the upper end of the front plate 10 of the front lid 7 via pins 17.

A guide means for retracting the upper surface plate 14 of the upper lid 8 rearward from the upper surface of the opening of the pocket 6 is provided in conjunction with the upward opening operation of the front lid 7. This guide means is composed of the left and right slide pins 16 and a guide groove 19 recessed in the front-rear direction on the left and right front lateral side walls of the main body case 1. As shown in FIG. 3, the guide groove 19 is formed on the step-down surface 20 inside the outer surface of each of the left and right lateral side walls of the upper case, and has a generally "V" shape.

In the unused state, the front lid 7 and the upper lid 8 are closed as shown in FIG.
1 and the guide plate 15 are adjacent to each other in the same plane. In this state, the rear corners 21 located on both sides of the rear edge of the upper lid 8 are located in a state of protruding laterally outward from the step-drop surface 20. Therefore, in the present invention, in order to prevent the fingertips or clothes from being caught on the rear corner portion 21, the chamfered surface 22 is provided on the rear corner portion 21 to remove the tip apex.

In FIG. 4, the chamfered surface 22 is a rear corner portion 21.
Is rounded from the side of the top plate 14 as indicated by a radius R1, and the rear edge surface 15a of the guide plate 15 is formed by an arc surface as indicated by a radius R2. The real value of R1 is 2 mm.

This chamfered surface 22 is shown in FIGS. 5 and 6 (a).
It can be formed by changing the shape as shown in (c). In FIG. 5, the rear edge 14a of the top plate 14 and the top plate 1
4 and the ridge 14b of the guide plate 15 and the rear edge 15 of the guide plate 15.
round each of b and b as shown by radii R3 to R5,
The chamfered surface 22 is formed into a three-dimensional curved surface.

In FIG. 6 (a), each of the ridge 14b and the rear edge 15b of the guide plate 15 is chamfered into a flat shape,
The chamfered surface 22 was formed in a chevron shape.

In FIG. 6 (b), as shown in FIG. 6 (a), each of the ridges 14b and the trailing edge 15b is chamfered in a plane, and the ridges of the adjacent chamfered walls are removed in a triangular shape. To be chamfered surface 22.

In FIG. 6 (c), the apex of the rear corner 21 is chamfered so as to be cut obliquely, and this is chamfered 22.
And

[Brief description of drawings]

FIG. 1 is a side view of a front portion of a tape cartridge.

FIG. 2 is a plan view of the inside showing the schematic structure of the tape cartridge.

FIG. 3 is a side view showing a state in which a front lid and an upper lid are partially opened.

FIG. 4 is a plan view and a side view of a main part of an upper lid showing details of a chamfered surface.

FIG. 5 is a trihedral view of a main part of an upper lid showing a modified example of a chamfered surface.

6A to 6C are explanatory views showing further different modified examples of chamfered surfaces.

[Explanation of symbols]

 7 Front lid 8 Upper lid 20 Stepped surface 21 Rear corner 22 Chamfered surface

Claims (3)

[Claims] 1. A front lid 7 and an upper lid 8 which are opened and closed in conjunction with each other are provided at a front portion of the main body case 1, and when the lid is closed, rear corner portions 21 on both sides of a rear edge of the upper lid 8 are provided. In the tape cartridge located on the lateral outer side of the step-down surface 20 provided on the front side wall of the above, a chamfered surface 22 for removing the tip apex of the rear corner 21 is formed at the rear corner 21 of the upper lid 8. A tape cartridge characterized by being present. 2. The tape cartridge according to claim 1, wherein the chamfered surface 22 is a curved surface. 3. The tape cartridge according to claim 1, wherein the chamfered surface 22 is formed by one or more flat surfaces.