JPS60217553A - Cassette recorder - Google Patents

Abstract

PURPOSE:To reduce the quantity of shifting at the time of setting and to make the device thin by providing a device that inserts a part of the cover of a cassette in a concavity of a cassette holder and a device that presses the side of the cover vertically and releases locking. CONSTITUTION:When the cassette 1 is inserted into the cassette holder 23, the side 5 of the cover 4 of the cassette is energized upward by a spring 29, and the rotation shaft 16 of the cover 4 moves along a slanted face of a hole 17 against the force of the spring 29, and locking of the cover 4 is released. When the cassette 1 is lowered and setting operation is started, the cover 4 which comes into contact with a kick pin 31 rotates clockwise more than about 45 deg. while being pushed up. Then, it is rotated automatically by the force of a spring 28 and released perfectly. Thus, locking of the cover is released by only inserting into the cassette holder 23, and the quantity of shifting at the time of setting can be made small, and the device can be made thin.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application: The present invention relates to a cassette recorder using a tape cassette with a lid used for magnetic recording and the like.

2. Description of the Related Art Structures of Conventional Examples and Their Problems In recent years, cassette recorders have been widely used in various fields. In particular, tape cassettes with lids are used in video cassettes for high-density recording to avoid fingerprints and dust. The authors have already proposed such a tape cassette with a lid for audio use.

Below, we will explain a cassette recorder that uses a tape cassette with a lid and that automatically opens the lid in conjunction with the insertion and setting of the cassette, which the authors have already proposed.

FIG. 1 is a perspective view of an embodiment of a tape cassette with a lid in a closed state, in which 1 is the cassette main body, 2 is the upper half of the cassette,
3 is the lower half of the cassette, 4 is the U-shaped lid, 6 is the lid side part, 6
7 is a shift pin insertion hole, and 7 is a protection plate that prevents the lid 4 from being opened inadvertently.

FIG. 2 is a perspective view showing the lid open state, and 8 is an opening surface 14.
9. 10 is a cutting machine for forming an opening. Reference numerals 11, 12 and 13 are openings. FIG. 3 is a partial side sectional view showing the locked state.

FIG. 4 is a partial top view showing the inside of the cassette. Numeral 15 is a magnetic tape, 16 is a pivot shaft of the lid 4, and 17 is a pivot shaft fitting hole provided on the side of the cassette body 1. It has a roughly triangular shape that tapers off. 18 is a leaf spring, and the rotation support shaft 16
is energized towards the rear.

FIG. 6 shows the relationship between a tape cassette with a lid constructed as described above and a recorder that automatically opens the tape cassette when setting the cassette. In Fig. 5, 19 is a shift pin;
20 is a kick pin, and when the cassette 1 is set and moved in the direction of arrow B, the shift pin 19 is first inserted into the shift pin insertion hole 6, and the shift pin 19 shifts the lid side part 6 in the direction of arrow B. This releases the locked state of the lid 4.

As the lid 4 moves further in the direction indicated by the arrow, the lower end of the lid 4, which has been pulled away from the opening surface, comes into contact with the kick bin 20, and the lid 4 is pushed up and rotated by more than 46 degrees (in the direction of arrow C), causing the leaf spring '18 to close. It is automatically opened by force to obtain the open state shown in FIG.

However, with the above configuration, there is a problem in that the setting operation alone requires a large setting stroke to release the lock by shifting the lid 4 and then to open the lid with the kick pin. was.

OBJECTS OF THE INVENTION The present invention is a further improvement of the above-mentioned cassette recorder, and an object of the present invention is to provide a cassette recorder that requires less movement during setting and is effective in making the device thinner.

Structure of the Invention The present invention uses a tape cassette that can be unlocked by pressing the lid side part in the vertical direction, and includes an insertion guide means for guiding the insertion of the cassette in the main plane direction, and an insertion guide means for guiding the insertion of the cassette in the main plane direction. This is a cassette recorder equipped with a lid side push-up means that looks under the cassette insertion path and pushes the lid side upwards, and automatically locks in the closed state just by inserting a cassette. The cassette lid can be unlocked when the cassette is inserted, and the amount of movement required for the cassette setting operation subsequent to the cassette insertion operation can be reduced.

DESCRIPTION OF EMBODIMENTS FIG. 6 is a side view showing the main parts of a cassette recorder in a first embodiment of the present invention. In FIG. 6, 21 is a lower chassis, 22 is an upper chassis, 23 is a cassette holder, 24 is a cassette holder upper plate, 26 is a cassette holder lower plate, 26.27 is a vertical movement guide shaft of the cassette holder and a vertical chassis 22. A support column 28 that connects the cassette holder 21 urges the inserted cassette downward with a leaf spring fixed to the cassette holder upper plate 24. 29 is the cassette holder lower plate 26
A linear spring attached to the lid side 5 of the inserted cassette
energize the lower part upwards. 30 is a contact portion for automatically closing the unset item when the lid 4 is opened, 31 is a kick pin, 32 is a column that connects the upper chassis 22 and the lower chassis 21, and 33 is a setting part. 34 is a pin that regulates the rearward height of the cassette; 35 is a tape knife drive shaft for winding or supplying the tape in the cassette; be.

The operation of the suspicious male side cassette recorder configured as above will be explained below.

First, when the closed cassette 1 is inserted into the opening of the cassette holder 23 in the state shown in FIG. 6, the side part 6 of the lid 4 is pushed upward by the linear spring 29 as shown in FIG. The pivot shaft 16 of the lid 4 is moved along the slope of the fitting hole 17 against the force of the leaf spring 18, and the lid 4 is unlocked, resulting in the state shown in FIG.

Next, when the cassette holder is moved in a direction perpendicular to the main plane of the cassette and enters a so-called setting operation, the lower end of the lid 4, which is in the unlocked state, comes into contact with the kick pin 31, and the lid 4 is pushed upward and clockwise. When it is rotated in the direction of 46 degrees or more, it is automatically rotated by the force of the leaf spring 18 and is completely opened, resulting in the state shown in FIG.

As described above, according to this embodiment, the lock can be released simply by inserting the cassette into the cassette holder, so the entire amount of movement of the subsequent setting operation can be used to open the lid. .

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

FIG. 9 is a side view showing the main parts of a cassette recorder showing a second embodiment of the present invention. This figure differs from the configuration shown in FIG. 8 only in the cassette lid push-up portion. That is, the linear spring 29
Instead, a spring-loaded lever is used. 3
Reference numeral 6 indicates a lid side push-up lever, and 37 indicates a pivot shaft of the push-up lever 36, which is provided on the lower plate 25 of the cassette holder. 38 is the push-up part of the push-up lever 36, 39 is the push-up lever 36
The other end, 4o, is a spring that biases the push-up lever 36 clockwise. With this structure, when the push-up lever 36 enters the setting operation from the unlocked state shown in FIG. 31 and rotates to the open state, but since the other end 39 of the push-up lever 36 is in contact with the lower chassis 21, the push-up part 38 rotates counterclockwise and opens the side of the lid 4. The contact state with 5 is released. Therefore, cassette 1 in the setting state
Since no unnecessary external force acts on the cassette 1 other than the downward urging force by the leaf spring 28, the cassette 1 can be positioned and held securely.

FIG. 10 is a side view of a main part of a cassette recorder showing a third embodiment of the present invention. In the same figure, reference numeral 41 denotes a lid side push-up portion, which is constituted by a protrusion provided on a part of the cassette holder lower plate 25. The lower part of the side part 5 of the lid 4 of the inserted cassette is pushed up by the protrusion 41 to release the lock. With this configuration, the configuration can be extremely simplified.

FIG. 11 shows another embodiment of a cassette in which a protrusion is provided on the side 6 of the cassette lid. 42 is a protrusion provided near the rear end of the cassette lid side portion 6.

FIG. 12 is a side view of a main part showing how the lock is released when a cassette having a protrusion 42 as shown in FIG. 11 is used. At this time, the push-up part 41 pushes up the protrusion 42, so the lid 4 rotates counterclockwise around one of the locking parts, that is, the lower locking part, and the upper locking part is locked. Solve. Therefore, from this state, the setting operation starts and the lid 4 can be easily opened by pushing up the lower end with a kick pin or the like.

FIG. 13 is a side view of an embodiment of a push-up portion that makes it possible to release the lock by rotating the lid 4 as described above also for the lid as shown in FIG. 6. In the figure, reference numeral 43 indicates a chevron-shaped protrusion formed on a part of the cassette holder lower plate 25 to push up the rear of the lid side part 6. This allows the lid 4 to be unlocked by rotation.

FIG. 14 is a side view of the same purpose implemented using a linear spring. 44 is a linear spring formed into a mountain shape.

The above is about releasing the lock by rotation, but when this method is used, the lock can be released with less force than the above-mentioned case of releasing by moving in parallel.

Effects of the Invention The present invention uses a tape cassette that can be unlocked by pressing the lid side part in the vertical direction, and includes an insertion guide stage that guides insertion of the cassette in the main plane direction, and an insertion guide means. By providing a lid side push-up means that looks under the cassette insertion path and moves the lid side upwards, the lid is automatically engaged in the closed position just by inserting the cassette. Since the lock can be released and the subsequent setting operation requires only the opening of the lid, the amount of movement required for the setting operation can be reduced. or,
Since the push-up portion can be formed integrally with the cassette holder or formed of a linear spring or the like, the configuration can be extremely simplified. Alternatively, it is possible to form a lever or the like and use the displacement of the cassette holder during setting operation to retract the push-up part to the non-operating position, making it an excellent cassette that can securely position and hold the cassette. 7) It is possible to realize a recorder.

[Brief explanation of drawings]

No. 11m is a perspective view of the TV cassette with lid in the closed state;
Fig. 2 is a perspective view showing the lid in the open state, Fig. 3 is a partial side sectional view showing the lid in the locked state, Fig. 4 is a partial top view showing the inside of the cassette, and Fig. 6 is the already proposed cassette. A partial side view showing the lid opening mechanism and the relationship between the cassette and the recorder, FIG. 6 is a side view showing the main parts of the cassette recorder in the first embodiment of the present invention, and FIG. 7 is a view showing the completion of insertion of the cassette. FIG. 8 is a side view showing the cassette setting state, FIG. 9 is a side view of the second embodiment of the present invention, and FIG. 10 is a side view of the third embodiment of the present invention. 11 is a side view of another embodiment of the cassette lid side part, and FIG. 12 is a side view of another embodiment of the cassette according to the third embodiment of the present invention.
FIG. 13 is a side view of the main part of the fourth embodiment of the lid side push-up part of the present invention, and FIG. 14 is a side view of the main part of the fourth embodiment of the present invention. It is a side view showing the main part of an example. 1...Cassette body, 4...Lid, 5...
...Lid side part, 16...Rotation shaft, 19.
...Shift pin, 20...Kick pin,
23... Cassette holder, 29... Linear spring, 31... Kick pin, 36...
・Push up lever. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 8 Figure 2 Figure 9 Figure 11 Figure 12 Figure 13 Figure 14

Claims (1)

[Claims] (1) - A cassette body with an opening on the side, a U-shaped lid that opens and closes by rotating the opening in the vertical direction, and a lid body of the U-shaped lid or its The tape is equipped with a locking means that partially fits into the four parts provided on the cassette opening surface to prevent rotation in the closed state, and the lock can be released by pressing the lid side part in the vertical direction. An insertion guide means that uses a cassette to guide the insertion of the cassette in the direction of the main plane, and a lid side push-up that pushes and moves the lid side upwards while looking into the lower surface of the cassette insertion path of the insertion guide means. A cassette recorder comprising means. (2) During the cassette setting operation in the direction perpendicular to the cassette main plane direction after the cassette insertion operation is completed, the recess on the cassette opening surface comes into contact with the lower end of the lid that has been pulled away, and the lid is opened. The cassette recorder according to claim 1, further comprising a lid opening means. (3) The cassette recorder according to claim 1, wherein the lid side push-up means is formed by a protrusion provided on the cassette insertion guide means. (4) The cassette recorder according to claim 1, wherein the lid side push-up means is formed of an elastic body provided in the cassette insertion and guide means or a member biased by an elastic body. (6) The lid side part pushing up part of the lid side part pushing up means is configured to move back from the operating position to the non-operating position in conjunction with the cassette setting operation. The cassette recorder mentioned.