JPS6235194Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette lid device for a magnetic recording/reproducing device, and its purpose is to facilitate the assembly of a cassette pressing spring.

A conventional cassette pressing spring was installed as shown in FIG. That is, the cassette holding plate spring 3 was attached to the cassette lid 1 using a crimping pin 2 or a screw. However, in this mounting configuration, fastening members such as caulking pins and screws must be prepared separately, and fastening work such as tightening and screwing must be performed, resulting in problems in terms of cost and workability. In addition, as the lid was repeatedly opened and closed, the spring attachment loosened, making it impossible to obtain sufficient pressing force, and chattering occurred when the cassette was not attached.

Therefore, the present invention is intended to eliminate such conventional drawbacks, and a second embodiment of the invention will be described below.
This will be explained with reference to the drawings that follow. In the figure, 4,
5 is the cabinet of the tape recorder, 6 is a resin cassette lid (cassette holder in this embodiment) whose one end is rotatably attached to the shaft 7 of the cabinet 4, and 8 is fixed to the bosses 9 and 10 of the cabinet 5 with screws. 11 and 12 are a cassette front end locking rib and a cassette rear abutment rib, which are implanted on the mechanism board 8, and 13 is a cassette.

The cassette lid 6 is constructed as shown in FIG. 3, with reference numeral 14 a top plate, 15 and 16 side plates having cassette support pieces 15a and 16a, 17 a pair of arms supported by the shaft 7, and 18 Reference numeral 19 indicates a guide rib having a stepped portion 18a against which the rear end of the cassette 13 comes into contact, and 19 indicates a rib for attaching a cassette presser spring, which are integrally molded. This cassette pressing spring mounting rib 19 has support pieces 20, 2 each having an L-shaped cross section.
1, 22 and support pieces 20, 21 and support pieces 21, 2
Projections 23 and 24 located between the two are integrally provided with a space between them. Left, right, both support pieces 2
0 and 22 are provided so that their grooves face each other, and the center support piece 21 is provided so that its groove faces the cassette side. Reference numeral 25 denotes a linear spring, whose both ends are locked in the grooves of the support pieces 20 and 22 in a bent state, the central part is locked in the groove of the support piece 21, and the part between the support pieces is protruded. It is secured and attached at parts 23 and 24.

After inserting the cassette 13 into such a cassette lid and rotating it, the cassette 13 will be in the state shown in FIG. The step portion 11a of the rib 18 and the step portion 18a of the rib 18 restrict the back and forth movement, and the device is mounted in a stable state.

As explained above, according to the cassette lid device of the magnetic recording/reproducing apparatus of the present invention, a rib having at least three supporting pieces is provided on the top plate of the cassette lid, and linear springs are bent to engage these supporting pieces. The cassette presser spring can be assembled by simply stopping it.
Special fastening members and troublesome fastening work can be omitted, and the cassette presser spring can be installed at low cost with one touch. Furthermore, since the cassette pressing spring is a straight spring, no bending is required, and it has the advantage of being easy to handle during installation. In addition, since the linear spring is slackened between the protrusions provided between the three supporting pieces and the central supporting piece, it is possible to shape the linear spring so that the central part thereof has a convex shape.
The tape cassette can be reliably brought into contact with the tape cassette housed in the cassette lid, and the tape cassette can be held down.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a conventional cassette lid device, FIG. 2 is a side sectional view of a cassette lid device according to an embodiment of the present invention, and FIG. 3 is a rear perspective view of the main parts of the device.
FIG. 4 is a front view of the same. 6...cassette lid, 13...cassette, 19...
...Rib, 20, 21, 22...Support piece, 25...
Straight spring.

Claims (1)

[Scope of utility model registration request] Three support pieces each having an L-shaped cross section are provided at a predetermined interval on a rib provided on the top plate of the cassette lid, and protrusions are provided between each of the support pieces, and the center support piece and the two protrusions When the linear spring is bent, both ends of the linear spring are locked to the support pieces on both sides, thereby forming a convex shape near the center of the linear spring and locking it to the center support piece. A cassette lid device for a magnetic recording/reproducing apparatus, wherein the cassette is pressed by the substantially central portion of the linear spring having a convex shape.