JPH0419651Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a tape cassette.

Conventional technology Conventionally, this type of tape cassette is shown in Figs. 4 to 6.
The configuration was as shown in the figure. In the figure, a lower cassette 1 houses a pair of reels 2, 2, and a tape 3 wound on one reel 2 is wound on the other reel 2 through an opening 1a. The outer peripheries of the flange portions 2a, 2a of the reels 2, 2 are provided with toothed portions 2b, 2b over the entire circumference, which engage with the brake levers 4, 5 to prevent rotation. The brake levers 4 and 5 are fitted onto shafts 1b and 1c provided on the lower cassette 1, and their tips are connected to the toothed portions 2b and 2b of the reels 2 and 2 by a spring 6 attached to the lower cassette 1, respectively. They mesh together. When the tape cassette is attached to the deck, the release lever 8, which is pivoted to the bearing ribs 1d and 1e, is rotated clockwise by the release pin 7 provided on the deck side, and the back part 8a of the release lever 8 is used to apply the brake. Ends 4a, 5 of levers 4, 5
Press a to rotate the brake levers 4 and 5 inwardly to release the engagement between their tips and the toothed portions 2b and 2b of the reels 2 and 2.
It is configured so that it can rotate freely. still,
The spring 6 is provided between the ribs 1f and 1g integrally provided on the lower cassette 1. Further, the tips of the springs 6 are in contact with the vertical surfaces of the rear surfaces of the brake levers 4 and 5.

Problems to be Solved by the Invention In such a conventional configuration, the brake levers 4 and 5 are usually molded from different colored plastics such as black and white, so they are easy to distinguish.
Each brake lever has a substantially V-shape, so it is easy to misread the up and down direction, and there is a problem that workability when attaching it to the lower cassette 1 is not good.

This invention solves these problems,
It is an object of the present invention to provide a tape cassette equipped with a brake lever shaped so that it is easy to judge the mounting direction when mounting the tape cassette.

Means for Solving the Problem In order to solve this problem, the present invention provides a pair of reels 12 having toothed portions 12b on the outer periphery, and a pair of brake levers 1 corresponding to each reel 12.
4, 15 and this pair of brake levers 14, 1
A spring 13 is pressed and rotated to engage the toothed portion 12b, and a spring 13 is rotated against the elastic force of the spring 13 to separate the pair of brake levers 14 and 15 from the toothed portion 12b. release lever 1
6, each of the brake levers 14, 15 is pressed against the elastic force of the spring 13 by the engagement piece 14b that engages the toothed portion 12b and the release lever 16 when the brake lever is released. The engaging piece 14b and the pressing piece 14c have the same shape and have the same rotationally symmetrical shape even if the brake levers 14 and 15 are turned upside down. .

Effect: With this configuration, it becomes possible to attach the device without considering the vertical direction, thereby improving work efficiency.

Embodiment Hereinafter, the drawings (first
This will be explained based on FIGS.

In the figure, 11 is a lower cassette, and a pair of reels 12, 12 are provided thereon. These reels 1
Teeth-shaped portions 12b, 12b are provided on the outer periphery of the flange portions 12a, 12a of the springs 1, 12.
The tips of the pair of brake levers 14, 15, which are rotationally biased by the lever 3, are engaged with the toothed portions 12b, 12b. The back part 16a of the release lever 16 presses the brake levers 14, 15, and the brake levers 14, 15 and the toothed parts 12b, 12
The method of releasing the mesh of b is the same as in the conventional example.

Here, regarding the brake levers 14 and 15, for example, one brake lever 14 has a rotationally symmetrical shape with the center of symmetry being in a direction perpendicular to the external fitting direction of its shaft portion 14a, as shown in FIG. The engaging piece 14b at one end has the same shape as the pressing piece 14c at the other end. Therefore, the brake lever 14 shown in FIG. 2 has the same shape even if the page is rotated by 180 degrees. The same applies to the brake lever 15. Therefore, this brake lever 14,1 is actually installed in the lower cassette 11.
When attaching the lever 5, if you can identify whether it is the brake lever 14 or the brake lever 15 by its color, you do not need to pay any attention to its vertical direction.

By the way, in order to make the brake levers 14 and 15 substantially vertically symmetrical, in fact rotationally symmetrical,
The shapes of the spring 13 and release lever 16 have also been modified from conventional ones. Therefore, the brake levers 14, 15 cannot be directly attached to a conventional cassette.

Effects of the Invention As described above, according to the present invention, the installation work can be performed without paying attention to the identification of the up and down direction of the brake lever, thereby reducing worker fatigue and improving work efficiency.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the present invention. Figure 1 is a plan view of the brake section of the tape cassette, Figure 2 is a front view of the brake lever, and Figure 3 is the same as that of Figure 1. 4 is a plan view showing the internal structure of a conventional tape cassette, FIG. 5 is an enlarged view of the main part thereof, and FIG. 6 is a sectional view taken along line XX in FIG. 5. 11... lower cassette, 12... reel, 12a
...Flange portion, 12b...Toothed portion, 13...Spring, 14, 15...Brake lever, 14b...
Engagement piece, 14c... Pressing piece, 16... Release lever.

Claims (1)

[Scope of utility model registration request] A pair of reels 12 with toothed portions 12b on the outer periphery
A pair of brake levers 14, 15 corresponding to each reel 12, a spring 13 that presses and rotates the pair of brake levers 14, 15 to engage the toothed portion 12b, and an elasticity of the spring 13. The pair of brake levers 14 are rotated against the force.
a release lever 16 for separating the brake lever 15 from the toothed portion 12b;
4 and 15 are engagement pieces 1 that engage the toothed portion 12b.
4b, and a pressing piece 14c that is pressed against the elastic force of the spring 13 when the release lever 16 releases the brake. , 15 are configured to have the same rotationally symmetrical shape even if they are replaced upside down.