JPS6093690A - Tape cassette - Google Patents

Abstract

PURPOSE:To constitute a brake means with the small number of parts by molding a supply side brake and a take-up side brake unitedly with a brake releasing part body enabled to be operated from the external through hinge parts. CONSTITUTION:A brake chip 8 is constituted by molding the brakes 8d, 8e on the supply side and the take-up side unitedly with both the brades of the T- shaped brake releasing part body 8a through hinge parts 8b, 8c at their leading parts and the brakes 8d, 8e can be turned around the hinge parts 8d, 8c respectively. In the brake means, the brake releasing part body 8a of the brake chip 8 is pushed by a pin through a transparent hole formed on the bottom of a half case 9 and the body 8a is moved in the arrow direction. Consequently, force turning the brakes in a direction separating the brakes from reels 1, 2 is applied and engagement between the brakes 8d, 8e and the locking grooves 1a, 2a of reels 1, 2 are unlocked.

Description

[Detailed description of the invention] The use of rC]- is to apply force to the tape cassette of ``Video Record Gaizuki'', and 4.1- relates to its brake mechanism. be.

Conventional structure and its starting points Conventionally, in this 4111 tape cassette,
In order to prevent the magnetic tape from loosening during transportation, a brake mechanism with a structure as shown in FIG. 1 has been used to prevent rotation of the reel on which the magnetic tape is wound. In Fig. 1, 1 is the IJ-le on the supply side that winds up the magnetic tape, 2 is the reel on the take-up side where the magnetic tape is wound on this supply-side reel 1, and the outer periphery of these reels 1 and 2 is has a plurality of engagement grooves 1a.

2a is provided.

3.4 is the locking groove 1a of each of the reels 1 and 2.

The brakes 3 and 4 can be rotated around the shaft, and the brakes 3 and 4 can be rotated in the direction of locking into the locking grooves 1a and 2a of the reels 1 and 2 by the brake springs 5 and 6. is constantly being watched.

7 is a brake release lever that the rear ends of the brakes 3 and 4 come into contact with; by operating this brake release lever 7 from the outside, the brakes 3 and 4 rotate around their shafts;
The reels 1 and 2 are unlocked from the locking grooves 1a and 2a.

By the way, in the case of this conventional tape cassette, as shown in Figure 1, there are many parts that make up the brake mechanism, and there are many parts that make up the brake mechanism, such as a storage shaft that allows the parts to be stored in the case. The drawback was that it had to be set up separately, which made the tweeting case complicated.

1-) of January 2013 is intended to solve these conventional drawbacks, and to make it possible to construct a brake mechanism with a small number of 7m products.

In order to achieve this objective 1-1, the present invention integrates a supply side brake and a takeoff side brake into the main body of the brake part, which can be operated from the outside, via a hinge part. It uses a brake piece provided by +1111.

With this configuration, the only parts constituting the brake mechanism are the brake lever and the brake spring, reducing the number of parts.

Description of Example 1!11 Hereinafter, explanation will be given using the drawings of FIG. 2 and FIG. In addition, Figures 2 and 3
In the figure, the same parts as in FIG. 1 are given the same numbers.

In the figure, 8 is a brake piece made of synthetic resin such as polypropylene, and as shown in FIG. The structure is constructed by integrally molding the brakes sd and se on the supply side and the take amplifier side through the brakes ad and se.
is a retrospective door centered around the hinge parts 8b and 8c. The bent hinge portions sb and sc are constructed by providing square grooves. Furthermore, this brake piece 8 is fitted with a guide rib 1o provided on the nof case 9. 1jsf is provided. A guide wall 11 is provided to surround the brake release portion main body 8a of the brake piece 8.

12 is the brake ad and se of the brake piece 8.
, 2 is a brake spring that is always biased in the direction of the locking grooves 1a and 2a. 13a, 13b.

13c and 13d are guide ribs implanted in the half case 9.

In the brake mechanism of this structure, the brake j
By pressing the brake release part 1# of 8 and the part body 8a, the brake 19 removal part main body 8a moves in the direction of the arrow in FIG.
Do J. This causes the brake 8d.

A force is applied to the reel 8e via the hinge portions sb and sc to rotate it in the direction of rotation from the reel 1°2, and the brakes ad,
se bird 1/shi 1, 2 lll upper stop seedlings 1a, 2a and 1
The thread IL will be removed.

As with the effect of the original sound, the brake ++ iil? +", H'1i% One brake and a brake are integrally molded through the hinge part, so there are 1316 items or 1 brake spring included. 2 points, and also has the effect of simplifying the assembly work.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the main structure of a tape cassette from 6c onwards, Fig. 2 is a perspective view showing the main structure of a tape cassette according to an embodiment of Misfire-1, and Fig. 3 is a perspective view of the same tape cassette. FIG. 3 is a perspective view showing main parts. 1.2... Reel, 1a, 1b... A thread stopper, 8... Brake piece, 8a...
・Brake release part body, sb, sc...Hinge part, 8d, 8e...Brake.

Claims (1)

[Claims] It has a reel on the reel side and take-up side that winds the magnetic tape, and a brake mechanism to prevent rotation of the reel when not in use.
The supply side brake and take-up side brake are hinged to the brake release part body that can be operated from 115.
; A tape cassette with a flake formed by integral molding through the cassette.