JPH0210636Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a cassette lid device that covers a tape cassette half (hereinafter abbreviated as "half") installed in a cassette tape recorder.

Structures of conventional examples and their problems In recent years, there has been a significant demand for miniaturization and thinning of audio equipment such as cassette tape recorders, but on the other hand, problems have arisen due to the structure of each part following the structure of conventional large equipment. There are quite a few.

A conventional cassette lid device will be explained below. FIG. 1 is a perspective view of a conventional cassette lid device, in which 1 is a chassis of a cassette mechanism, 2 is a lid rotatably supported on a bearing 1a of the chassis 1, and is used to hold a tape cassette. A kangaroo pocket 2a is integrally molded. To insert the half, insert the half along the groove of the kangaroo pocket 2a and close the lid 2 by hand. Further, in order to take out the half, it is sufficient to lift the lid 2 by hand.

However, according to the above-mentioned conventional configuration, it is originally difficult to insert the half into the groove of the kangaroo pocket 2a when inserting the half, and as the device becomes smaller and thinner, the dimensional margin of each part decreases. Furthermore, there was a drawback in that the operability during insertion was poor and the half easily got caught. Another drawback is that when the lid 2 is touched during tape play, the kangaroo pocket 2a tends to come into contact with the half, causing the half to move, making the tape run unstable and often causing problems such as deterioration of sound quality.

Next, FIG. 2 is a side view showing another conventional cassette lid device, in which 4 is a chassis, 5 is an eject lever rotatably supported on the chassis 4, 6 is an operating lever that reciprocates; 7 is half.

In this structure, when the operating lever 6 is pushed in using the eject button, the protrusion 6a engages the eject lever 5 and operates to eject the half 7. When the eject button is released, each member returns to its position before being ejected by the return spring 8. In this case, the lid of the device (not shown) has a structure that allows it to be opened and closed freely regardless of the operation of the ejector lever 2.

According to the above structure, the ease of mounting and operating the half is good, but in order to avoid ejection during performance, the operation lever 6 has to be operated to switch between stopping and ejecting, and the structure of the ejector itself is the drive mechanism for the tape. In many cases, the eject button, eject lever, etc. become a constraint on the layout and design of the equipment.
In addition, when the half 7 is ejected, the lid body often stops with being lifted up, and taking out the half 7 requires an additional operation such as opening the lid body. .

Purpose of the invention This invention solves the above-mentioned conventional problems.
It is an object of the present invention to provide a cassette lid device in which the operation of attaching and detaching the halves is simple and the degree of freedom in arranging the parts of the device is large.

Composition of the invention The invention includes a lid body that is rotatable with respect to the chassis,
Equipped with an eject lever, the engaging arm provided on the lid engages with the eject lever midway through the rotation stroke of the lid and rotates together with the eject lever. This is a cassette lid device that allows the half to be taken out by opening the body.

DESCRIPTION OF EMBODIMENTS FIG. 3 is an overall perspective view showing the internal structure of a device using a cassette lid device according to an embodiment of the present invention, and FIGS. 4 and 5 each show the structure of the main parts. The exploded perspective view and FIGS. 6 to 8 are side views for explaining the operation.

In each figure, 11 is a chassis, 12 is a lid body,
Reference numeral 13 denotes an eject lever, which has a mounting seat 11a provided at one end of the chassis 11, a support shaft hole 11b and a cam groove 11c, and a receiving seat 11 at the other end.
Only the receiving hole 11e is provided in the receiving hole 11e. On the other hand, a fulcrum groove 1 is provided on the surface of the lid body 12 facing the mounting seat 11a.
2a, a long hole 12b, and a reversing shaft 12c, and a protruding shaft 12d is formed on the surface facing the seat 11d. Next, the ejector lever 13 is provided with a mounting groove 13a at a position opposite to the spindle hole 11b, a through hole 13b at a position opposite to the cam groove 11c, and a protrusion 13c at a position abutting the half. There is.

In the lid device having the above configuration, first, the support shaft 14 is inserted into the support shaft hole 11b, and the mounting groove 1 of the eject lever 13 is inserted into the support shaft hole 11b.
3a into the fixing groove 14a of the support shaft 14, then insert the cam shaft 15a into the toggle arm 15 into the cam groove 1.
1c and the large diameter part of the through hole 13b, and the hook of the eject spring 16 is inserted into the support shaft 14 and the camshaft 15.
Hook it onto the tip of a and secure it. Next, insert the reversing shaft 12c into the through hole 15b of the toggle arm 15, insert the fulcrum groove 12a into the gap between the mounting seat 11a and the head of the support shaft 14, and then insert the protruding shaft 12d of the lid 12 into the receiving seat 1.
1d and the deflection of the lid 12 to open the receiving hole 11e.
If the screw 17 is inserted into the mounting seat 11a through the elongated hole 12b, the lid 12 will no longer fall off from the chassis 11. Finally, the return spring 18 is hung between the tip of the eject lever 13 and the chassis.

The operation of the cassette lid device of this embodiment constructed as described above will be described below.

Since the camshaft 15a is biased toward the support shaft 14 by the eject spring 16, the lid body 12 is biased toward either the opening side or the closing side depending on the position of the reversing shaft 12c. Cam groove 11c and through hole 13
b is molded in the same shape except for the relief part 11g of the cam groove 11c, and the parallel part 11f is formed in the same shape as the camshaft 15a.
Since the vertical movement of the camshaft 15a is suppressed, the camshaft 15a is in the parallel portion 11 as shown in FIG. 6 when the lid body 12 is closed.
If set to position f, the eject lever 13 will not move.

In FIG. 7, when the cam shaft 15a reaches the left end of the cam groove 11c with the lid 12 opened by an opening angle θ ₁ , the lid 12 is biased in the opening direction, but the ejector lever 13 does not rotate because the circumferential direction of rotation does not act on it, and it also does not move because it is biased in the downward direction by the return spring 18. When the lid body 12 is rotated to an opening angle of θ ₁ or more, the camshaft 5a enters the relief portion 11g, but since there is no relief in the through hole 13b of the eject lever 13, it resists the spring force of the return spring 18. The half 19 is then rotated upward and discharged by the kick-out portion 13c.

Further, when the lid 12 is rotated to the opening angle θ ₂ as shown in FIG. 8, the camshaft 15a reaches the upper end of the relief portion 11g, and the rotation of the lid 12 and the ejector lever 13 is blocked. When you release your hand from the lid 12, the ejector lever 13 returns to its original position due to the action of the return spring 18, and the lid 12 assumes the position of the opening angle θ ₁ (the state shown in Figure 7), allowing you to remove the half. And it can be installed without any problem.

In the embodiment, the lid body 12 and the ejector lever 1 are
Although both rotation axes of No. 3 are the same, they may be separated from each other.

As described above, according to this embodiment, the half is completely ejected only by the opening operation of the lid, making it easy to remove the half.Moreover, since the half is not ejected until halfway through the opening operation, the half is not ejected until the middle of the opening operation. There is no risk of adversely affecting the running of the tape. In addition, since there is no member such as a kangaroo pocket that restricts the insertion position of the half, when installing the half, it is easy to insert the half roughly into the space inside the lid and close the lid, allowing the half to be installed correctly at the predetermined playing position. This allows for extremely good operability in both insertion and removal of the half.

Furthermore, since all of the above configurations can be placed on the top surface of the tape drive mechanism, they can be completely separated from the tape drive mechanism, meaning that they can be adopted for any type of tape drive mechanism, and there is no need to place parts such as an eject button. Design restrictions and external design restrictions can also be reduced.

Effects of the invention The present invention increases the degree of freedom in arrangement and appearance by combining the eject lever with the chassis and lid body, and has a structure in which the eject operation is performed only in the latter half of the opening operation range of the lid body. It is possible to realize an excellent cassette lid device that can achieve the effect that the operation of attaching and detaching the half is extremely easy.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional cassette lid device, FIG. 2 is a side view of another conventional example, FIG. 3 is an overall perspective view of a cassette lid device according to an embodiment of the present invention, and FIG. 4 , FIG. 5 are exploded perspective views showing essential parts of this embodiment, and FIGS. 6 to 8 are side views for explaining the operation. 11... Chassis, 11c... Cam groove, 11f
... Parallel part, 11g ... Relief part, 12 ... Lid body,
12c...Reversal axis, 13...Eject lever,
13b...Through hole, 15...Toggle arm, 15a
...Camshaft, 16...Eject spring.

Claims (1)

[Scope of utility model registration request] A lid body is rotatably supported on the chassis, an eject lever is also rotatable and is biased in the closing direction by a return spring, and one end is rotatably supported on the lid body. , a cam shaft passing through a cam groove formed in the chassis and a through hole formed in the eject lever at the other end, and a toggle arm that performs a toggle operation, the cam groove being connected to the edge. 1. A cassette lid device comprising a relief part that extends in the circumferential direction of rotation of the electric lever, and a parallel part that runs in the radial direction, and the through hole is only in the parallel part.