JPS642274Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a brake mechanism for a tape recorder.

Figures 1 and 2 are plan views showing the main parts of the brake mechanism of a conventional tape recorder. Figure 1 shows the brake fully applied, and Figure 2 shows the pawl of the brake member being in the Shows the state where it hits the tip of the reel teeth.

In the drawing, A is the brake member, which has two arms 1,
2, a mounting hole 4 is provided in the joint 3 of the two arms 1 and 2, and the shaft is supported rotatably but without play on a support 5 established on the chassis (not shown). has been done. 6 is a supply reel, 7 is an intermediate gear that is always meshed with the gear of the take-up reel 8, and 9 and 10 are claws provided on the arm 2. When the brake is applied, as shown in the first figure, the other arm 1 and A spring 11 stretched between the chassis (not shown) allows the pawls 9 and 10 to be connected to the gears of the supply reel 6.
The intermediate gears 7 are biased in the direction and mesh together.

However, as shown in FIG. 2, if the pawl 9 of the arm 2 of the brake member A collides with the tooth tip of the supply reel 6 during the braking operation, the brake member A uses the support 5 as its fulcrum. As a result, the pawl 10 and the intermediate gear 7 are temporarily disengaged and the brake becomes ineffective. Although not shown, even if the pawl 10 of the arm 2 of the brake member A collides with the tooth tip of the intermediate gear 7, the brake member A rotates counterclockwise about the support 5 as a fulcrum.
This time, the claw 9 and the gear of the supply reel 6 became disengaged, and there was another drawback that the brake temporarily did not work.

The present invention aims to improve such conventional drawbacks, and an object of the present invention is to provide a brake mechanism for a tape recorder that is simple in structure and reliable in operation.

The present invention will be explained below with reference to FIGS. 3 and 4.
FIG. 3 shows a state in which the brake corresponding to FIG. 1 is fully applied, and FIG. 4 shows a state in which one claw of the arm of the brake member is in contact with the tooth tip of the supply reel.

Note that the same parts as in FIGS. 1 and 2 are given the same numbers, and detailed explanations will be omitted.

In order to achieve the above-mentioned object, the present invention has improved the conventional example by providing sufficient play between the support column 5 and the mounting hole 4 of the brake member A, and
A spring 12 is provided between the two claws 9 and 10 to apply an elastic force in the direction of the arrow perpendicular to the center line of the supply reel 6 and the intermediate gear 7.

Next, to explain the operation of the brake mechanism of the present invention, in the state shown in FIG.
The middle of the pawls 9, 10 is pressed in the direction of the arrow, and the two pawls 9, 10 mesh with the gears of the supply reel 6 and the intermediate gear 7, and the brake is completely applied. Next, during the brake operation,
As shown in FIG. 4, the claw 9 of the arm 2 of the brake member A
If it hits the tooth tip of the supply reel 6, make sure that there is enough play between the mounting hole 4 of the brake member A and the support 5, and press the middle of the pawls 9 and 10 with the spring 12. 4, the brake member A rotates clockwise (in the direction of the arrow) in FIG. 4, and the arm 2 also rotates in the same direction, so that the pawl 10 tightly meshes with the intermediate gear 7, exhibiting a braking effect.

Although not shown, the pawl 10 of the brake member A
Even if the brake member A collides with the tooth tip of the intermediate gear 7, the brake member A rotates around the tooth tip of the intermediate gear 7 as a fulcrum in the same way as described above, and the pawl 9 and the gear of the supply reel 6 mesh to provide a reliable brake. It can be effective.

In the playback state of the tape recorder, the leg portion 14 of the brake member A is pushed upward in FIG. 3 and rotated to release the brake.

As mentioned above, the present invention allows the brake member to be integrally molded, so the structure is simple and manufacturing costs can be reduced. This has the effect that a reliable braking effect can always be exerted even when the vehicle is hit.

[Brief explanation of the drawing]

Figures 1 and 2 are plan views showing the brake mechanism of a conventional tape recorder. Figure 1 shows the brake in a fully effective state, and Figure 2 shows the pawl of the brake member on the tip of the supply reel's teeth. Indicates the state in which this occurs. 3 and 4 are plan views showing the brake mechanism of the tape recorder of the present invention. FIG. 3 shows the brake in a fully effective state, and FIG. 4 shows that the pawl of the brake member is connected to the tooth of the supply reel. Indicates the state of being hit first. A... Brake member, 1, 2... Arm, 3... Connection part, 4... Mounting hole, 5... Support column, 6... Supply reel, 7... Intermediate gear, 8... Take-up reel, 9 , 10...nail, 11, 12...spring,
13... Legs.

Claims (1)

[Scope of utility model registration request] An arm is provided with two claws that mesh with and disengage from both gears provided in the supply reel mechanism and the take-up reel mechanism, and one end of the arm is provided with a mounting hole that has sufficient play with the support. A brake mechanism for a tape recorder, characterized in that the arm is provided with a pressing means that has a point of action between the claws and urges the claws in the direction of meshing with the gear.