JPS596534Y2 - tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder, and its purpose is to greatly simplify the biasing means for the head substrate and the vinyl roller, thereby facilitating assembly.

In conventional tape recorders, the biasing means for the head base plate and the vinyl roller were constructed of a plurality of springs, making assembly difficult.

First, regarding the head substrate, there are two types: a tension spring or torsion spring that biases the substrate in the direction in which the head is pressed against the tape, and a leaf spring that presses the substrate toward the main substrate to eliminate wobbling of the head substrate. There are two springs, and for the pinch roller there is a torsion spring that biases the pinch roller lever in the direction in which the pinch roller is pressed against the capstan, and at least three springs are used in total.

Generally, when installing a spring, it is necessary to attach it against the elastic force of the spring, so the large number of springs means that it takes time to install, and conventional tape recorders are troublesome to assemble.

Therefore, the present invention attempts to eliminate these conventional drawbacks at once, and specifically, attempts to use one torsion spring to perform the functions of three conventional springs.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a main part of the cassette tape recorder of this embodiment, and FIG. 2 is a rear view thereof.

In the figure, 1 is a main board (mechanism board), and a head board 4 is slidably guided in the directions of arrows A and B by shafts 2 and 3 implanted in this main board 1.

Reference numeral 5 denotes a magnetic head (recording/reproducing head) attached to the head substrate 4.

Reference numeral 6 denotes a Vinci roller lever rotatably supported around a shaft 7 implanted in the main substrate 1, and a Vinci roller 9 is rotatably supported on the shaft 8.

10 is a capstan.

A protrusion 6a and a locking piece 4a that engage with each other are provided at the tip of the Vinci roller lever 6 and the side edge of the head substrate 4.

A pin 11 is implanted on the main board 1 between the pinch roller lever 6 and the head board 4, and a wound portion 12a of a torsion spring 12 is loosely fitted onto this pin 11.

One end 12b of this torsion spring 12 is attached to a Vinci roller lever.
The pinch roller lever 6 is pressed against a protrusion 6b provided on the rear surface of the pinch roller lever 6, and applies a clockwise rotational force to the pinch roller lever 6 in FIG.

On the other hand, the other end 12C of the torsion spring 12 is pressed against a locking piece 4b provided on the side edge of the head board 4,
is biased in the direction of arrow B.

Further, the corner portion 12d formed by bending the other end portion 12c of the torsion spring 12 is pressed against the vicinity of the center of the head substrate 4, and presses the head substrate 4 toward the main substrate 1 side, thereby forming the head 5.
The height position is stably maintained.

Next, reference numeral 13 denotes a pin implanted in the front end of the head substrate 4, and this pin 13 is engaged with a V-shaped notch 14a provided at the end of the lever 14.

This lever 14 is rotatable around a shaft 15 embedded in the main board 1, and is rotated by operating a fast forward/rewind button 16 in the fast forward direction (arrow D).

17 indicates a magnetic tape. Next, the operation of the above embodiment will be explained.

First, in the stopped state, the head board 4 is held in a position where it is pushed back in the direction of arrow A against the biasing force of the torsion spring 12, and the binding piece 4a of the head board 4 also separates the vinyl roller 9 from the capstan 10. It is held in the same position.

When a play button (not shown) is operated, the head board 4 moves forward in the direction of arrow B, and the head 5 comes into contact with the cassette tape 17 as shown in FIG. , the magnetic tape 17 starts running at a constant speed in the direction of the arrow.

When the button 16 is operated in the direction of arrow C or D in this playback state, the pin 13 is pushed back in the direction of arrow A, and the head board 4 is also pushed back a little against the force of the spring 12, thereby locking it. The vinyl roller 9 is connected to the capstan 1 by the piece 4a.
0 is released.

Since the tape high-speed feeding mechanism is operated by operating the button 16, the tape recorder enters a high-speed running state, so-called cue state or review state, while maintaining the playback state, that is, with the head 5 remaining in contact with the tape 17.

Needless to say, when the button 16 is returned to the center position, the playback state is resumed.

As explained above, according to the tape recorder of the present invention, 1
Biasing the head board in the sliding direction with individual torsion springs,
Since the three functions of pressing the head substrate toward the main substrate and urging the capstan of the Vinci roller can be performed, the structure is greatly simplified and can be assembled easily and at low cost.

[Brief explanation of the drawing]

FIG. 1 is a plan view of essential parts of a tape recorder according to an embodiment of the present invention, and FIG. 2 is a rear view of the tape recorder. 1... Main board, 4... Head board, 6
......Binch roller lever, 12...Torsion spring, 12 d...Corner part.

Claims (1)

[Scope of utility model registration request] A head board is slidably provided on the main board, and a Vinci roller lever is rotatably provided, a pin is implanted on the main board between the head board and the Vinci roller lever, and a torsion spring is wound around this pin. The same parts were engaged, one end of the torsion spring was brought into pressure contact with the pinch roller lever, the other end was brought into pressure contact with a locking piece provided on the head substrate, and the other end of the torsion spring was bent to form the shape. 1. A tape recorder characterized in that a head substrate is pressed against a main substrate by a corner portion.