JPS6163956A - Cassette recorder - Google Patents

Abstract

PURPOSE:To open a cassette cover at the extremely short stroke of a cassette by setting slidably a cassette cover lock/release member to the lower chassis of a recorder and opening the cover when a cassette is loaded. CONSTITUTION:The cassette over lock/release member 32 is set slidably to the slide guide shaft 33 of the lower chassis 21 of the cassette recorder. The resetting force is given to the member 32 by a weak spring 34. When a cassette 1 is inserted to the cassette recorder, the side part 5 of a cover 4 is allowed to contact with the upper part of the member 32. Then the lock of the cover 4 is released at its closed position. When the cassette 1 is moved down further, the lower edge of the cover 4 is pushed up by the member 32. At the same time, the member 32 moves to complete a cover opening action. Thus it is possible to lock and release the cover 4 at an extremely short cassette stroke with a simple structure.

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 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 that perform high-density recording to avoid fingerprints and dust.The authors have already proposed the use of such tape cassettes with lids for video recording. Ta.

The following pseudonyms have already proposed 7'j: 4. A cassette recorder that uses a tape cassette with 'i' and 'g' to automatically release the difference in conjunction with the mounting operation of the cassette in a predetermined playing position (i position) will be described.

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, 5 is the lid side part, 6
7 is a protective plate that prevents the lid 4 from being opened by the user.

Fig. 2 is a perspective view showing the lid in its open state; 8 is a protruding strip for forming a locking recess on the opening surface 14; 9.1o is a cutting machine for forming the opening; 11 12.13 is an opening. Fig. 3 shows the part 11111 in the locked state.
i is a top view.

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

FIG. 5 shows the relationship with a recorder which automatically opens the lid of a tape cassette with a lid constructed in this way during the mounting operation. In Figure 6, 19ba/futobin, 2Q
When the cassette 1 is moved in the direction of arrow B for installation, the shift bin 19 is first inserted into the shift bin insertion hole 6, and the shift bin 19 moves the lid side part 5 in the direction of arrow B. ] This releases the locked state of the lid 4.

When the lid 4 is further moved in the direction of the arrow, the lower medium of the lid 4 which is pulled aGt'' from the opening surface comes into contact with the kick bin 2o, and the lid 4 is pushed up and rotated by more than 45 degrees (in the direction of the arrow C), and the leaf spring 1
It is automatically opened by the force of 8 to obtain the open state shown in FIG.

However, with the above configuration, the lid 4 can be removed only by the mounting operation.
The problem was that it required a long stroke to install, which involved releasing the lock by shifting and then opening the lid with a kick bin.

Purpose of the Invention The present invention further improves the cassette 71-recorder of JE, and provides a cassette that requires less movement when installed, has an extremely simple configuration, and can realize miniaturization and thinning of the device. The purpose is to provide a recorder.

Structure of the Invention The present invention uses a tape cassette in which a U-shaped lid that rotates vertically to open and close a cassette opening engages with a recess in the opening surface and is locked in the closed position. A cassette mounting means that can be moved almost vertically to be mounted at a cassette playing position, and a tape cassette Swallow f to be mounted.
It is a cassette recorder equipped with a cassette lid lock release and lid opening member that is placed on standby in the capital F direction, and the painless IE release and lid release member area can be moved while abutting at least one side of the cassette body. By doing so, the locking/unlocking and opening of the lid can be completed in one continuous operation, and the construction can be made extremely simple.

Description of examples FIG. 6 shows a cassette according to the first embodiment of the present invention.

This shows the side of the recorder. In FIG. 6, 1 is a tape cassette, 4 is a lid, and 6 is an M flii section 2.
1 upper part 21/yarn, 22 upper part/yarn/, 23 cassette holder upper plate, 24 cassette holder lower plate, 25 cassette pressing spring that urges the cassette 1 downward in the cassette holder, 26 holder upper plate When the cassette is ejected, the cassette H that comes out with its lid open collides with the abutting portion provided in the cassette and is automatically closed. 27. 28 is a guide shaft of the cassette holder, 29 is a column connecting the upper and lower parts,
30 is a cassette position i4 determining bin, 31 is a cassette rear height regulating bin, 32 is a painless release and cover opening part, 33 is a sliding guide shaft thereof, 34 is a weak spring that provides a return force, 3
Reference numeral 5 denotes a reel stand for supplying or winding up the tape in the cassette, and FIG. 6 shows the closed tape cassette inserted into the cassette holder.

FIG. 7 shows the cassette mounting operation in progress, and the cassette holder is moved in a direction perpendicular to the main plane of the cassette by the guide shafts 27 and 28, and the lower edge of the indigo part 5 is attached to the painless release/lid opening member 32. FIG. 6 is a diagram showing a state in which the lid is released from being locked in the closed position by contacting the lid portion.

FIG. 8 is a diagram showing a state in which the mounting operation has further progressed, and as the cassette holder descends, the lower edge of the lid 4 is pushed up and opened, but the painless release/lid opening member resists the force of the weak spring 34. move and complete the opening action while escaping. FIG. 9 is a diagram showing a state in which the opening operation is completed. In this way, in the above embodiment, the lid is continuously unlocked and opened by simply moving the painless release/lid opening member slightly, and furthermore, the abutment part at the time of opening is close to the pivot shaft. Therefore, the installation stroke is extremely small and the opening can be performed reliably.

FIG. 10 is a top view showing a portion of the painless release/lid opening member, and 36 is a connecting portion for integrally forming the left and right pair;
37 is a guide hole for movement.

FIG. 11 is a side view of a cassette recorder showing a second practical example of the present invention. This figure shows the relationship between the cassette L- and the painless positive release/lid opening member in a system in which the tape cassette is manually mounted directly at the playing position or in a rotary cassette holder system with a fulcrum at the rear.

Reference numeral 37 is a cassette rear pushing spring that pushes the rear of the cassette mounted at a predetermined performance position to position the cassette. Therefore, in order to obtain reliable positioning, the force of the return spring 34 of the painless release/lid opening member 32 must be extremely weak, negligible compared to the force of the spring 37. Alternatively, if the painless positive release/lid opening member is locked and held near the maximum displacement position, and the locked state is released in conjunction with ejecting the cassette, the influence of the spring 34 during use of the cassette can be completely eliminated. Can be removed.

Incidentally, the present invention includes the painless release/lid opening member 32 and the cassette 1.
11, the painless release/lid opening member 32 is fixed on the chassis 21, and the cassette 1 is moved by the cassette pushing spring 37. Figure 12 is a side view of a cassette recorder in a third practical example of the present invention, which is equipped with a rotating mounting device similar to that shown in Figure 11. However, this is an actual example when the cassette direction is reversed. In the same figure, 38 is a cassette holder, 39 is a protrusion provided on the inner surface of the cassette holder 38 for automatically closing the open cassette lid 4 when ejecting the cassette, and 4o is a cassette holder that always holds the cassette downward. A biasing spring 41 is a cassette insertion opening of the cassette holder 38;
2 is a lower plate of the cassette holder, 43 is a pivot shaft of the cassette holder 38, 44 is an oil receiving plate, and 4S is a spring that always urges the cassette holder upward. Like this, the cassette lid 4
Even when the lid can be completely attached from the downward position, the painless release/lid opening member 32 and the lower edge of the side part 5 of the lid 4 should start colliding at the correct position, so that at least the lid 1Jj11 part 5 at the beginning of the collision starts. The upper surface of the painless release/lid opening member 32 must be parallel to the lower edge or be higher at the rear.

FIG. 13 shows a painless release/lid opening member 32 according to the present invention.
FIG. 6 is a top view showing another embodiment of the holding and guiding method. In the figure, 46 is a rotating arm, 47 is a pivot shaft thereof, 48 is a stopper, and the painless release/opening member 32 is provided at the tip of the rotating arm 46 when it is bent. FIG. 14 is a side view thereof. The amount of movement of the painless release/lid opening member 32 during operation is extremely small, and it is also possible to utilize part of the circular arc movement by the rotating arm. In short, any guide can be used as long as it can provide guidance close to a linear movement in the front-rear direction, and is not limited to the above-mentioned guide.

The optimal position for the painless release/lid opening member to start colliding with the lower edge of the lid side is in front of the position of the pivot shaft 16 of the lid 4, which allows not only the release of the lid but also the subsequent opening. must be able to be performed smoothly. Therefore, although not shown, restrictions on inserting a cassette into a cassette holder etc. should be placed at an appropriate level.
Of course, it is necessary to hold it accurately using the 4-determining method.

Effects of the Invention The present invention uses a tape cassette in which a U-shaped lid that rotates vertically to open and close a cassette opening engages with a recess in the opening surface and is locked in the closed position. A cassette mounting means that is moved almost vertically to be mounted at the cassette playing position, and a tape cassette to be mounted*
A cassette lid lock release/lid opening member is placed on standby at the bottom of t+1++, and at least one of the cassette lid release/lid release member or the cassette body can be moved painlessly by collision at the time of mounting, so that the mounting operation is performed. Only a very short stroke is required, and the locking and releasing can be performed successively and extremely smoothly during abutment with one component. The number of additional parts is extremely small and the configuration is simple, making it possible to realize an excellent cassette recorder that can be applied to any cassette mounting method.

[Brief explanation of drawings]

Figure 1 is a perspective view of the tape cassette with lid in the closed state;
Figure 3 is a perspective view showing the lid in its open state, Figure 3 is a partial side sectional view showing the lid in a locked state, Figure 4 is a partial top view showing the inside of the cassette, and Figure 6 is the already proposed psychokinesis set lid. FIG. 6 is a partial side view showing the opening mechanism and its relationship with the cassette recorder; FIG. Figure 7. FIG. 8 is a side view showing the installation process in progress, FIG. 9 is a side view showing the completed installation state, FIG. 10 is a top view showing the painless release/lid opening member, and FIG. FIG. 12 is a side view of the cassette recorder in the second embodiment of the present invention, FIG. 13 is a side view of the cassette recorder in the third embodiment of the present invention, and FIG. 13 is the second embodiment of the painless release and lid opening member of the present invention. The top view of the embodiment, FIG. 14, is its ff111 side view. 1...Cassette body, 4...Lid, 6...
...Lid side, 19...7 foot pin, 2o
...Kick pin, 21...Lower shunt, 3o...Cassette positioning pin, 32...
...Painless release and lid opening member, 33...Sliding guide shaft, 36...Reel stand. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 6 Figure 7

Claims (4)

[Claims] (1) Using a tape cassette in which the U-shaped lid that rotates vertically to open and close the cassette opening engages with a recess in the opening surface and is locked in the closed position, the tape cassette in the closed state is A cassette mounting means that is moved in a direction substantially perpendicular to a plane to mount the cassette at a playing position, a cassette lid lock release and lid opening member that is placed in standby below the lid side of the tape cassette to be loaded, and a cassette lid holder. The cassette lid is unlocked from the closed position due to collision between the lock release and lid opening member and the cassette lid during installation, and the lid is opened by the lid lock release and lid release member as the subsequent mounting operation progresses. A cassette recorder characterized in that it is configured to be (2) When the lid lock release/lid opening member collides with the cassette lid, at least one of the lid lock release/lid release member or the cassette body moves in the front and back direction. A cassette recorder according to claim 1. (3) Claim 1, characterized in that the distal end of the lid lock release/lid opening member and the lower edge of the lid side are brought into contact slightly in front of the lid rotation support shaft. The cassette recorder mentioned. (4) The cassette recorder according to claim 2, wherein only the lid lock release/lid opening member is moved and is locked and held near its maximum movement position.