JPH0728633Y2 - Tape car ledge - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a tape cartridge containing a liner sheet, in which the shape of the pin for regulating the position of the sheet is improved so that the tape may be attached to the sheet regulating pin during assembly. It is designed to prevent it from biting into.

[Conventional technology]

FIG. 2 shows an example of a tape cartridge to which the present invention is applied. This is a case in which the upper and lower plastic cases 1a and 1b are butted against each other and integrally connected by screws 2 etc. Has a drive shaft insertion hole 3.3
A pair of left and right hubs 5, 5 around which the tape 4 is wound on the left and right sides of the main body case 1 are positioned and rotatably accommodated on the drive shaft insertion holes 3, 3 respectively. Liner sheets 6a and 6b are interposed between the inner surfaces of 1a and 1b.

When assembling this, as shown in FIG. 3, first, the lower liner sheet 6b, the left and right hubs 5 and 5 around which the tape 4 is wound, the upper liner sheet 6a, and the like are sequentially installed in the lower case 1b, and then the lower case 1b. The upper case 1a is covered and several places are integrally connected by screws 2 or the like.

The liner sheets 6a and 6b are likely to be displaced during this assembly. Therefore, as shown in FIG. 2, each liner sheet 6a, 6b has holes 7, 7 on the left and right, respectively, and a position regulating portion 8 consisting of holes, notches, etc. at the left and right center rear, of which the lower side As shown in FIG. 3, the liner sheet 6b has left and right holes 7 and 7 on the bosses 9 and 9 protruding from the inner periphery of the drive shaft insertion hole 3 of the lower case 1b, and a position restricting portion 8 on the lower case 1b. The position regulation is performed by fitting the sheet regulation pins 10b protruding from the inner surface. Further, the left and right holes 7 and 7 of the upper liner sheet 6a are provided on the bosses 9 and 9 projecting from the inner circumference of the drive shaft insertion hole 3 and 3 of the upper case 1a, and the position regulating portion 8 is provided on the upper case 1a.
The sheet restricting pins 10a projecting from the inner surface of the are fitted respectively.

[Problems to be solved by the invention]

However, from the inner surface of each of the upper and lower cases 1a and 1b, the seat regulation pin
In the form in which 10a and 10b are projected in a butt shape, the tape 4 tends to be caught by the sheet regulating pin 10a on the side of the upper case 1a during assembly, as shown in FIG. 4 (b). Such a problem is that the sheet regulating pin 10a on the upper case 1a side is formed into a substantially parallel pin shape just like the sheet regulating pin 10b on the lower case 1b side with only a slight draft from the mold. Therefore, when the upper case 1a is put on the lower case 1b to which the tape 4 is previously assembled, the tape 4 is loosened as shown by a chain double-dashed line F in FIG. 2 and is shown in FIG. 4 (a). As the lower case 1b side seat regulation pin 10b
This is because the upper edge of the tape 4 is easily stepped on the tip of the lower sheet regulating pin 10b at the tip of the sheet regulating pin 10a on the upper case 1a side when the tape 4 is snuggled up close to the upper sheet 1a.

Therefore, in the present invention, in the tape cartridge in which the sheet regulating pins 10a and 10b are projected from the inner surfaces of the upper and lower cases 1a and 1b so as to abut each other, the tape 4 is prevented from being caught during the assembling and the assembling workability is improved. The purpose is to

[Means for solving problems]

That is, in the present invention, the seat regulating pin 10a protruding from the inner surface of the upper case 1a is replaced by the seat regulating pin 10b on the lower case 1b side.
It is formed in a tapered shape.

[Action]

The tape 4 previously assembled to the lower case 1b is loosened and the lower case 1b is released.
Even if the seat control pin 10b on the side is snuggled up, the upper case 1
When the upper case 1a is covered with a, the sheet regulating pin 10a on the upper case 1a side is formed by the tape 4 as much as the tape is formed.
There is no need to run away from and touch.

[Effect of device]

According to the present invention, the draft of the sheet regulation pin 10b on the lower case 1b side is set to 0 to 1 degree, while the taper of the sheet regulation pin 10a on the upper case 1a side is set to 3 to 7 degrees. Since it is formed in a taper shape than the sheet regulating pin 10b on the 1b side, the tip of the sheet regulating pin 10a on the upper case 1a side contacts the tape 4 when the upper case 1a is covered on the lower case 1b to which the tape 4 is assembled. Interference can be avoided as much as possible, and edge damage and biting of the tape 4 can be effectively prevented.

〔Example〕

1 to 3 exemplify a tape cartridge according to the present invention. Since the basic structure thereof is the same as the conventional one described above, the same reference numerals are given and the description thereof will be omitted.
Seat restriction pins 10a and 10b provided on the upper and lower cases 1a and 1b
I will explain mainly.

In FIG. 1, the sheet regulating pin 10a protruding from the inner surface of the upper case 1a is provided with a taper relatively larger than the draft of the sheet regulating pin 10b on the lower case 1b side.

That is, as shown in FIG. 4 (a), the taper is such that even when the tape 4 leans slightly toward the sheet regulating pin 10b on the lower case 1b side, the sheet regulating pin 10a on the upper case 1a side does not tape the tape. By setting the upper end edge of No. 4 so as not to step on it, the sheet regulation pin 10a on the upper case 1a side is formed in a taper shape than the sheet regulation pin 10b on the lower case 1b side.

Specifically, when the draft of the sheet restraining pin 10b of the lower case is set to 0 to 1 degree, it is preferable to set the taper of the sheet restraining pin 10a of the upper case to 3 to 7 degrees.

[Brief description of drawings]

1 to 3 exemplify a tape cartridge according to the present invention. FIG. 1 is a longitudinal sectional view of an essential part, FIG. 2 is an overall plan view showing a part of the tape cartridge, and FIG. FIG. 6 is a vertical cross-sectional view showing a state before the upper case is covered on the lower case. FIGS. 4 (a) and 4 (b) show examples of conventional defects.
FIG. 4 (a) is a longitudinal sectional view of an essential part showing a state before covering the upper case, and FIG. 4 (b) is a longitudinal sectional view of an essential part showing a state after covering the upper case. 1 …… Main body case, 1a …… Upper case, 1b …… Lower case, 4…
… Tape, 10a …… Sheet regulating pin on the upper case side, 10b ……
Seat control pin on the lower case side.

Claims (1)

[Scope of utility model registration request] 1. Sheet restraining pins (10a, 10b) projecting from the inner surfaces of the upper and lower cases (1a, 1b) constituting the main body case (1) in a butt shape, and the seat on the lower case (1b) side While the draft of the regulation pin (10b) is set to 0 to 1 degree, the seat regulation pin (10a) on the upper case (1a) side has a taper set to 3 to 7 degrees and is set to the lower case (1b) side. A tape cartridge characterized by being formed in a taper shape than the sheet regulation pin (10b).