JPS6124079A - Cassette recorder - Google Patents

Abstract

PURPOSE:To attain automatic opening of a cover by providing a cassette loading and guide means loading and guiding a tape cassette in the direction of major plane, a lock release section having a tip angle section and a spring energizing means energizing a loaded cassette toward the lock release section. CONSTITUTION:In loading the cassette, the cassette is pressed downward by a plate spring 19 and enters in the direction of arrow A and overrides the lock release section 22 against the force of a spring 20. The cassette main body 1 uses the lock release section 22 for the positioning in a guide section 18 and the lock release section 22 uses the force of the spring 20 to depress the rear side of a cover side part 5 to move the cover 4 toward the arrow A thereby releasing the locking of the cover 4 to the closed position. When the guide part 18 is moved in a direction vertical to the cassette loading direction and set to the prescribed position of playing, it contacts with the lower ridge of the cover 4 on the way of setting to open the cover 4. In ejecting the cassette toward the arrow D, one end 20 of the plate spring 19 contacts the right edge of the cover 4 on the way of ejection, the cover 4 is turned counterclockwise and closed automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette recorder using a tape cassette with a lid.

Conventional configurations and their problems In recent years, there has been a demand for audio tape cassettes with lids to protect the tapes.

Audio tape cassette.

B Since it is necessary to be able to use both sides, the structure is different from the one-sided one conventionally used in video cassettes, etc., and the opening/closing mechanism of the cassette recorder that uses it is also different. Therefore, a new cassette recorder that is compatible with new cassettes has become necessary.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a cassette recorder having a cassette insertion mechanism that can automatically open and close the lid of a newly proposed tape cassette with a lid.

Structure of the Invention The present invention provides a cassette insertion guide means for inserting and guiding a tape cassette in the direction of its main plane, a locking release portion having a chevron-shaped tip provided on the insertion guide means, and a locking release portion for unlocking the inserted cassette. This is a cassette recorder equipped with a spring biasing means that biases the spring toward the cassette, and the locked state can be released by simply inserting the cassette.
The cassette lid is opened during the subsequent setting operation in a direction perpendicular to the main plane of the cassette.

Further, when ejecting the cassette, it is possible to raise the cassette in the open state and automatically close it at the tip of the cassette biasing spring when the cassette is ejected in the horizontal direction.

DESCRIPTION OF EMBODIMENTS FIG. 1 is a top view of an embodiment of a chief cassette with a lid used in an embodiment of the present invention, in which 1 is the cassette body, 2 is the upper half of the cassette, 3 is the lower half of the cassette, and 4 is the cassette lid. , 5 is a side of the cassette lid 4, 6 is a lid opening/closing projection provided on the front side of the cassette lid, 7 is a recess provided on the upper and lower surfaces of the cassette, 8 is a cassette lid rotation shaft, and 9 is a rotation shaft 8. The fitting hole is formed with a substantially V-shaped guide wall tapering toward the rear at the abutting portion of the upper cassette half 2 and the lower cassette half 3. 1o is a spring whose one end is applied to the cassette lid rotation support shaft 8, and always urges the cassette lid 4 backward. FIG. 2 is a side view thereof.

Figure 3 is a front view showing the open state of the lid.
is an opening, and 14 is a recess provided in the opening surface. FIG. 4 is a top view showing the inside of the cassette, in which the tape 17 of the reel and reel is housed and is the opening section. 6th
The figure is a partially detailed view showing the lid in the closed state, and the dotted line shows the open state.

The tape cassette with a lid constructed as described above requires a spring 1 to open the cassette lid 4 in the closed state shown in FIGS. 1 and 2.
It is necessary to pull the lid 4 forward from the opening surface in a direction substantially perpendicular to the opening surface against the force of o. After that, the front lower edge of the lid 4 or the lid opening/closing projection 6 may be pushed upward. Since the lid 4 is biased backward by the spring 10, it rises along the front surface of the opening, and when it rises more than half way, it rotates clockwise while sliding as a fulcrum at the upper part of the front edge of the opening, and comes into close contact with the top surface of the cassette. That's how it fits. When closing, move the cassette lid 4, which is in the state shown in Figure 3, forward along the top surface of the cassette main no. 72, and it will move in the opposite direction to the previous one to close the opening and fit in as shown in Figure 1. The state will be as follows. Although the lid 4 can be opened downward, when actually used in a device, it opens in one direction, for example, upward, regardless of whether the cassette is on the A side or the B side.

The recess 7 is provided at a position corresponding to the protrusion 16 of the lid in the open state, so that the lid 4 is in close contact with the upper surface of the cassette body 1 in the open state. In addition, a gentle slope is formed in front of the recess 7 to allow the lid 4 to return smoothly from the open position to the closed position. The recess 7 does not necessarily need to be provided;
It may be brought into contact with the upper surface of the cassette body 1 via the convex portion 15 .

This makes it easier to use the upper and lower edges of the lid 4 as abutting portions from the open state to the closed state. Furthermore, by reversing the relationship between the concave and convex portions, the concave portion 7 on the cassette body can be omitted.

Since the locking mechanism is constructed in this manner, it is only necessary to once pull the lid 4 forward from the opening of the cassette body 1 to release the lock, and then rotate the lid 4.

FIG. 6 is a side sectional view showing the main parts of the cassette insertion guide section of the cassette recorder according to the first embodiment of the present invention.
is a cassette insertion guide with an insertion slot on the right side. Reference numeral 19 urges the upper surface of the inserted cassette downward by a leaf spring attached to the clay wall of the guide section 18. Reference numeral 20 is the front end of the leaf spring 19, which urges the front of the cassette downward and also serves as an abutting part for closing the ejected cassette lid. '21
The other end of the leaf spring 19 urges the rear part of the inserted cassette downward. Reference numeral 22 denotes a lock release part having a tip ridge shape provided on the lower surface of the guide part 18, and is provided on both left and right sides of the guide part 18 corresponding to the position of the lid side part 6 of the cassette to be inserted. . Reference numeral 23 denotes a lid opening abutting portion for opening the lid in an unlocked state. FIG. 7 is a front view thereof.

With this configuration, when the cassette is inserted from the insertion slot, the cassette 1 will be inserted into the leaf spring 1 as shown in FIG.
The lock releasing portion 22 moves up against the force of the spring 2o and enters the state shown in the figure while being pressed downward. The cassette main body 1
At the same time as the positioning within 8 is achieved, the unlocking part 22 presses the rear of the lid side part 6 by the force of the spring 20, moves the lid 4 in the direction of the arrow, and locks the lid 4 in the closed position. Release.

From this state, the guide section 18 is moved in the direction of arrow B, that is, in a direction substantially perpendicular to the direction of insertion of the cassette, and set to a predetermined performance position.
The lid 4 is brought into contact with the lower edge of the lid 4, and the lid 4 is opened, resulting in the state shown in FIG.

When ejecting a cassette, the cassette first rises in the direction of arrow C in FIG. Rotate counterclockwise to close automatically.

FIG. 10 is a partial top view of another embodiment of the cassette used in the second embodiment of the present invention, in which 24 is a protrusion provided on the side 5 of the lid 4, 25 is a step provided on the cassette body, It protrudes from the side of the lid.

FIG. 11 is a side sectional view showing a second embodiment of the present invention using such a cassette. The insertion position regulating part (not shown) provided in the guide part 18 and the step part 25 come into contact with each other to regulate the insertion position, and
Due to the force of the leaf spring 20, the back surface of the protrusion 24 forms a mountain-shaped portion 22.
, and the lid 4 is unlocked.

As described above, according to this embodiment, the lid can be unlocked already when the cassette is inserted, so the amount of movement required for setting is extremely small compared to a system in which both unlocking and opening are performed at the time of setting. It is something that can be done. or,
According to the second embodiment, since the contact portion with the chevron-shaped portion is close to the front of the lid, smooth ejection is possible without having to again collide with the chevron-shaped portion when ejecting from the open state.

Effects of the Invention The present invention provides a cassette insertion guide means for inserting and guiding a tape cassette in the direction of its main plane, a locking release part having a ridge-shaped tip provided on the insertion guide means, and a locking release part for the inserted cassette. By providing a spring biasing means that biases the spring toward the cassette, the locking state of the lid can be released by simply inserting the cassette, and following this operation, the lid can be released from the locked state by simply inserting the cassette. An excellent cassette recorder has been realized in which the lid can be opened automatically when moving in a direction perpendicular to the cassette recorder, and one biasing spring can also be used to automatically close the lid when ejecting. It is possible.

[Brief explanation of drawings]

FIG. 1 shows the use of the cassette recorder according to the present invention. ), Figure 2 is a side view of the newly proposed tape cassette with a lid, Figure 3 is a front view showing its open state, Figure 4 is a top view of the newly proposed tape cassette with a lid.
The figure is a top view showing the inside, FIG. 5 is a side cross-sectional view of the main part in the closed state, and FIG. figure,
Fig. 7 is a front view thereof, Fig. 8 is a side sectional view showing the cassette inserted state, Fig. 9 is a side sectional view showing the lid open state, and Fig. 10 is a side sectional view showing the cassette inserted state.
1...Cassette body, 4...Cast and throat lid, 5...Name of agent Patent attorney Satoshi Nakao and one other person Figure 3 42 Figure 4

Claims (5)

[Claims] (1) Open the cassette opening on one side of the cassette body.
The U-shaped cassette lid opens and closes by rotating vertically.
A cassette recorder using a tape cassette that is released from the locked state in the closed position by pulling it apart in a direction substantially perpendicular to the opening surface in the closed state,
A cassette insertion guide means for inserting and guiding a cassette in the direction of its main plane, a lock release part having a tip ridge-shaped part provided on the insertion guide means, and a spring biasing force for pushing the inserted cassette toward the lock release part. A cassette recorder comprising a cassette insertion guide device comprising a spring biasing means. (2) The chevron-shaped tip fits between the rear edge of the cassette lid and a step provided on the outside of the cassette body, thereby pulling the cassette lid forward and releasing the locked state of the cassette lid. A cassette recorder according to claim 1, characterized in that: (3) The locked state is released by the chevron-shaped tip portion coming into contact with a protrusion provided on the side surface of the cassette lid or the rear edge of the cassette lid. cassette recorder. (4) After the locked state is released by insertion of the cassette, the cassette lid is opened by moving the cassette in a direction substantially perpendicular to the main plane direction of the cassette. The cassette recorder described in item 1. (5) The cassette recorder as set forth in claim 1, wherein the cassette lid which is ejected in the open state is closed by the energizing means for energizing the cassette.