JP2795732B2 - Tape cartridge - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a tape cartridge having a front cover for protecting a tape on a front surface of a main body case.

[Conventional technology]

A conventionally known VHS-C type tape cartridge is a second type.
As shown in the figure, a tape loading pocket 6 is provided on the front surface of the main body case 1, and a front lid 7 is attached to an eave wall 12 covering the upper surface of the pocket 6. The front lid 7 includes a single-plate-shaped front plate 9 and a pair of side plates 10 protruding from left and right ends thereof. A support shaft 11 protruding from the inner surface of the side plate 10 is supported by an eave wall 12. In addition, the entire front lid 7 can be opened and closed by swinging up and down. And
When the plate 9 is in the closed state, the pocket 6 and the eaves wall
The tape 4 is protected by covering the front surface of the tape 12.

[Problems to be solved by the invention]

The front plate 9 formed in a single sheet has a small thickness,
With the help of the large span between them, they easily bend and deform when subjected to an external force in a direction perpendicular to the plate surface. The fact that the front plate 9 bends and deforms inward does not cause much actual harm. However, as shown in FIG. 7, when the front plate 9 is pushed into the pocket 6 and the upper edge 9a of the front plate 9 goes under the lower surface of the eaves wall 12, the front cover 7 is opened when the deck is loaded. Can cause serious damage to the deck.

Even if the front panel 9 gets caught on the eaves wall 12, anyone can relatively easily resolve the abnormal state as long as they notice it. However, since this kind of tape cartridge is small in size as a whole and the amount of the front plate 9 caught in the eaves wall 12 is small, it is easy to overlook the abnormality of the front cover 7.

Therefore, an object of the present invention is to eliminate the possibility that the front plate gets into the lower surface of the eaves wall and catch the front plate, thereby improving the functional reliability of the tape cut ridge.

[Means for solving the problem]

In the present invention, even if the front plate 9 is pushed into the lower surface of the eaves wall 12, the self-recovery can be returned to a normal state as long as the external force is released, and the front plate 9 is fixed in a hooked state. There is to prevent.

Specifically, a tape loading pocket 6 is provided on the front surface of the main body case 1, and a tape protecting front lid 7 is mounted on an eaves wall 12 covering the upper surface of the pocket 6 so as to be vertically swingable. In the tape cartridge, when the front cover 7 is in the closed state, the passage of the tape 4 and the
At least one of corners adjacent to the upper end surface 15 of the front plate 9 and the front end surface 14 of the eaves wall 12 faces rearward of the case. On the inclined surface 16 that slopes downward.

[Action]

At least one corner of the upper end surface 15 of the front plate 9 and the front end surface 14 of the eaves wall 12 is formed as an inclined surface 16 inclined downward toward the rear of the case, because the front plate 9 is When pushed into the lower surface of the front panel 12, the upper edge of the front panel 9 is prevented from being caught on the eaves wall 12, and the contact between the inclined surface 16 and the opposing wall is directed to eliminate the bending deformation of the front plate 9. This is for generating a reaction force and positively causing the front panel 9 to self-return.

〔The invention's effect〕

In the present invention, at least one of the front plate 9 and the eave wall 12 of the front lid 7 is provided with an inclined surface 16 that is inclined downward toward the rear of the case. Even if you are intentionally pushed into
Since the upper edge can be prevented from being caught on the eaves wall 12, the self-return to a normal state can be achieved only by releasing the external force acting on the front plate 9. As a result, it is possible to prevent the front plate 9 from being used in a state of being caught on the eaves wall 12 due to evil play, oversight, etc., and to improve the functional reliability of the tape cartridge.

〔Example〕

1 to 4 show an embodiment of the tape cartridge according to the present invention.

In FIG. 2, reference numeral 1 denotes a main body case in which an upper case 1a and a lower case 1b are connected in a lid-like manner. A tape reel 2 for feeding and a tape reel 3 for winding are arranged on the left and right inside the main body case 1, and the tape 4 led out from the tape reel 2 for feeding is placed on the left and right of the front end of the case. It is wound up on a tape reel 3 for winding up via provided guide members 5. A pocket 6 for tape loading is recessed between the two guide members 5, and the front outer side of the tape 4 traversing the pocket 6 is covered with a front lid 7 attached to the main body case 1 when not in use. .

The front lid 7 has a single-plate-shaped front plate 9 and a pair of side plates 10 protruding from left and right ends of the front plate 9, and a support shaft 11 protruding from an inner surface of each side plate 10 in an opposed manner. It consists of molded plastic products. The pair of support shafts 11 are pivotally supported by an eave wall 12 that covers the upper surface of the pocket 6, and one of them is provided with a spring 13 that closes and biases the front cover 7.

When the front cover 7 is closed, the front plate 9 is located forward of the case from the passage of the tape 4 and the front end surface 14 of the eaves wall 12 and covers the respective front surfaces. In this state, the front panel 9
Is pushed into the case, the entire plate surface is bent and deformed and penetrates into the lower surface of the eaves wall 12 as shown in FIG.

Even if the front panel 9 is pushed into the lower surface of the eaves wall 12 as described above, in order to be able to return to its original state by the deformation stress of the panel surface, the rear corner side of the upper end face 15 of the front panel 9 An inclined surface 16 was provided at the bottom. The inclined surface 16 is formed so as to be inclined downward toward the rear of the case, and is formed over substantially the entire length of the upper end surface 15 excluding the vicinity of the side plate 10.

In a state where the front plate 9 extends under the lower surface of the eaves wall 12, at least two inclined surfaces 16 intersect with the front end surface 14 of the eaves wall 12, as shown in FIG. At this crossing point, a contact reaction force is generated in a direction to eliminate the bending deformation of the front plate 9. Therefore, when the pushing force is released, the front plate 9 immediately returns to the original state, and the front plate 9 is not caught on the eaves wall 12. Absent.

(Another embodiment example)

The present invention can be implemented in the forms shown in FIGS. 5 and 6, respectively.

FIG. 5 differs from the above-described embodiment in that the inclined surface 16 is formed at the front end corner of the eaves wall 12.

In FIG. 6, inclined surfaces 16 are formed at both the front end corner of the eaves wall 12 and the upper end surface 15 of the front plate 9.

 In addition to the above, the inclined surface 16 can be formed as a curved surface.

[Brief description of the drawings]

1 to 4 show an embodiment of the tape cartridge according to the present invention. FIG. 1 is a sectional view taken along line AA in FIG. 2, FIG. 2 is an overall plan view, and FIG. FIG. 4 is a sectional view taken along the line BB in FIG. 3 showing a deformed state of the front plate. FIG. 5 is a vertical sectional side view showing another embodiment of the present invention. FIG. 6 is a vertical sectional side view showing still another different embodiment of the present invention. FIG. 7 is a vertical sectional side view showing an abnormal use state of the conventional tape cartridge. 1 ... body case, 4 ... tape, 6 ... pocket (for tape loading), 7 ... front lid, 9 ... front panel, 12 ... eaves wall, 14 ... front end face, 15 ... top End face, 16 …… Slope.

Claims (1)

(57) [Claims] 1. A tape loading pocket (6) is provided on a front surface of a main body case (1), and an eaves wall (12) covering an upper surface of the pocket (6) has a front lid (7) for protecting a tape. The front lid (7) is a single-plate front cover that covers the passage path of the tape (4) and the front surface of the eaves wall (12) when the lid is closed. A face plate (9), and at least one of corners adjacent to each other between an upper end surface (15) of the front plate (9) and a front end surface (14) of the eaves wall (12) is directed toward the rear of the case. A tape cut ridge formed on an inclined surface (16) inclined downward.