JPH0452846Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a cassette double loading prevention device having means for preventing double insertion of tape cassettes.

[Prior Art] When a tape cassette is inserted into a cassette holder through the cassette insertion opening in a direction parallel to a plane perpendicular to the axis of the reel hub, the cassette holder moves in the direction of the axis of the reel hub and plays. A cassette-type tape drive device (for example, a tape recorder mounted on a vehicle) is known, which operates in the following operating states.

[Problems to be solved by the invention] However, in the conventional cassette-type tape drive device configured as described above, after the cassette holder moves from the tape cassette receiving position to the operating position, the tape cassette receiving position does not change. If a cassette is inserted by mistake, the tape cassette will be received in the space, and there is a risk that both cassettes in the erroneously inserted cassette operating position will not be able to be removed.

Furthermore, if a tape cassette is accidentally and forcibly inserted twice, there is a risk that the tape cassette inserted later will come into contact with various moving parts, damaging the parts or the tape cassette.

As a means to solve this problem, Japanese Patent Application Laid-open No. 61-22465 discloses a slider equipped with a blocking part to prevent double loading of cassettes.
A frame member is provided to move perpendicularly to the substrate, and when a cassette is transferred into the apparatus, the blocking portion is moved into the cassette insertion slot against a spring force to prevent insertion of a new cassette. It has been shown that

However, in such a configuration, when the cassette is not loaded, the blocking portion is located above the cassette insertion opening, which inevitably increases the size of the main body of the playback device in the height direction. In addition, since the slider provided with the blocking part is moved into the cassette insertion slot against the spring force, a large amount of power is required to move the blocking part, which increases the load of the cassette loading operation. There is.

This invention was made with the aim of solving these problems, and it can prevent a different tape cassette from being accidentally inserted when the cassette holder is in the operating position, and it also prevents the playback device from being inserted. To provide a cassette double loading prevention device that does not increase the size of the cassette and does not require power to prevent erroneous insertion of a cassette.

[Means for solving the problem] The cassette double mounting prevention device according to this invention has the following features:
In order to solve the above problem, a double insertion prevention piece that is movable together with the head mounting member is provided inside the cassette insertion slot, and when the head moves toward the tape contact position, the double insertion prevention piece moves into the insertion path of the tape gusset. The tape cassette is placed in the same position as the tape cassette, and is configured to prevent the insertion of other tape cassettes.

[Operation] When the tape cassette is inserted into the cassette holder through the cassette insertion opening, the cassette holder moves together with the tape cassette from the tape cassette receiving position to the operating position, and then a space is created at the receiving position.

However, as the head moves to the tape contact position, the double insertion prevention piece is located in the tape cassette insertion path, and the prevention piece prevents the insertion of another tape cassette.

[Embodiment] First, an embodiment in which a cassette type tape drive device according to the invention is applied to a vehicle-mounted tape recorder will be described with reference to FIGS. 1 to 4.

FIG. 1 is a plan cross-sectional view perpendicular to the reel hub axis of the cassette-type tape drive device according to the invention, showing the state before a tape cassette is inserted, and FIG. 2 shows the state after the tape cassette is inserted. .
FIG. 3 is a longitudinal sectional side view of the cassette type tape drive device taken along the tape cassette insertion line, and FIG. 4 is a vertical sectional front view taken in the right angle direction after the cassette is inserted.

In the same figure, the reference numeral 1 is the casing of the cassette type tape drive, and this casing 1
A cassette insertion slot 2 is provided on the front wall of the cassette.

Further, a chassis 100 is provided within the casing 1, and a cassette holder 4 is supported on the upper surface side of the chassis 100 so as to be movable up and down, with the cassette holder 4 being pivotally attached to the tip of a support plate 6. The cassette holder 4 is provided with a cassette receiving portion 5 that opens at the same height as the cassette insertion port 2. A cassette 3 inserted from the cassette insertion slot 2 is inserted into the cassette holder 4.
is being introduced. The support plate 6 is pivotally supported at the rear end of the chassis 100. In other words, the support plate 6 is connected to the chassis 10 through the pin 101.
It is rotatably attached to 0. By the rotation of the support plate 6, the cassette holder 4 is raised and lowered as described above. A pack slider 8 is provided on the top plate 4a of the cassette holder 4 so as to be able to reciprocate in the cassette insertion direction, and a tape cassette contact piece 8a is vertically provided at the rear end of the pack slider 8. Furthermore, a rotating plate 103 is provided on the support plate 6 and is rotatable around the pin 102. A reversing spring 9 is attached between the pack slider 8 and the tip of the rotating plate 103. The reversing spring 9 functions to return the back slider 8 toward the front until the back slider 8 is moved back by a predetermined distance or more due to insertion of the tape cassette 3 into the cassette holder 4. When the pack slider 8 is moved to the rear by a predetermined distance or more, the reversing spring 9 is reversed, and the pack slider 8 is now pulled to the rear. At that time, pack slider 8
The hook-shaped portion 8b at the front end of the tape cassette 3 is engaged with the tape reel hole 3a, and the tape cassette 3 is also rapidly drawn inward. At this time, the tape cassette 3 or the tape cassette contact piece 8a of the pack slider 8 abuts against a locking member (not shown), and the locking of the support plate 6 by this locking member is released. When this lock is released, the support plate 6 is rotated counterclockwise in FIG. 3 by a spring (not shown), and the cassette holder 4 is accordingly moved to the lower operating position as shown by the chain line in FIG. I am made to do so.

Further, a reel receiver 11 and a capstan 14 are attached to the chassis 100 below the cassette holder 4. In this cassette type tape drive device, when the cassette holder 4 assumes the operating position, the tape reel hole 3a and capstan hole 3b of the tape cassette 3 are fitted into the reel receiver 11 and the capstan 14, respectively. ing.

Furthermore, a head mounting plate 13 to which the head 12 is attached is attached to a side position on the chassis 100 so as to be movable forward and backward. This head mounting plate 13
The operating direction of the tape cassette 3 is set perpendicular to both the insertion direction of the tape cassette 3 and the axial direction of the reel hub, and when the cassette holder 4 takes the operating position, the head 12 is moved to the head mounting plate 13 by a head moving mechanism (not shown). With this, the tape cassette 3 moves in a direction close to the tape cassette 3, thereby putting the cassette type tape drive into an operating state (for example, a play operating state).

In addition, at the left end of the front end of the mounting plate 13, as shown in FIGS.
is bent substantially vertically upward. This double insertion prevention piece 15 is located inside the cassette insertion opening 2, that is, near the front wall of the casing 1,
Its upper end is located at approximately the same height as the cassette insertion opening 2.

This double insertion prevention piece 15 is indicated by a solid line in FIG.
When the cassette holder 4 is in a position where the tape cassette 3 can be received and the head mounting plate 13 has returned to the right position in FIG. 4, as shown by the chain lines in FIG. 4, the tape cassette 3 cannot be inserted. It is located away from the tape cassette insertion path so that it does not get in the way.

When the tape cassette 3 is inserted, the cassette holder 4 is lowered to the operating position, and the head mounting plate 13 approaches the tape cassette 3 together with the head 12, as shown by solid lines in FIGS. 2 and 4, respectively. When the tape cassette 3 is moved in the direction shown in the figure, it moves into the insertion path of the tape cassette 3, and other tape cassettes 3 are inserted from the cassette insertion slot.
The double-intrusion prevention piece 15 prevents the insertion of the double-instrument.

Next, the overall operation of the cassette type tape drive device constructed as described above will be explained.

When the tape cassette 3 is inserted through the cassette insertion port 2 in the state shown in FIG. 3, the tape cassette 3 is inserted into the cassette holder 4 through the cassette receiving portion 5. When the tape cassette 3 is inserted into the cassette holder 4 to a certain extent, the leading end of the tape cassette 3 comes into contact with the rear end piece 8a of the pack slider 8, and the hooked part 8b fits into the tape reel hole 3a of the tape cassette 3. engaged. And furthermore,
When tape cassette 3 is inserted,
The pack slider 8 is moved toward the back of the casing 1 against the opening force of the reversing spring 9. As the pack slider 8 moves, the reversing spring 9 is gradually compressed, and finally the reversing spring 1
1 is reversed beyond its dead center, and thereafter the tape cassette 3 is drawn to the rear end of the chassis 100 by the force of the reversing spring 8. in this way,
When the tape cassette 3 is pulled in to the rear end of the chassis 100, the support plate 6 is unlocked from the locking member (not shown). When the lock is released, the support plate 6 is rotated counterclockwise by a spring (not shown) as shown by the chain line in FIG.
Accordingly, the cassette holder 4 is moved downward in the axial direction of the reel receiver 11 from the tape cassette 3 receiving position, and the tape cassette 3 is set to the operating position shown by the chain line in FIG. 3 and the solid line in FIG. . As a result, the head mounting plate 13 is moved to the position shown in FIGS. 2 and 4 by a head moving mechanism (not shown), and the head 12 comes into contact with the tape to perform playback, etc. Furthermore, as the head mounting plate 13 moves, the double insertion preventing piece 15 integrally provided on the mounting plate 13 also moves into the cassette insertion path, as shown by solid lines in FIGS. 2 and 4.

The cassette type tape drive device configured in this way can provide the following effects.

That is, according to the above-mentioned cassette type tape drive device, when the cassette holder 4 is in the operating position, the double insertion prevention piece 15 is located in the insertion path of the tape cassette 3, so that there is no possibility of accidentally inserting another tape cassette. Even so, the tape cassette is prevented from being inserted by the double insertion prevention piece 15, so that double insertion of the tape cassette 3 is prevented.

Note that the double insertion part stopper 15 of the present invention is not limited to being formed by bending a part of the head mounting plate 13, but can be formed by, for example, screwing, gluing, or bonding members of similar shape.
It may be attached to the head mounting plate by a method such as welding, or a column-shaped member may be attached by a method such as screwing or caulking.

Further, in the above embodiment, the double insertion prevention piece 15 is located at a position slightly away from the inner wall surface around the cassette insertion opening 2, but the double insertion prevention piece 15 is slidably contacted with the inner wall surface around the cassette insertion opening 2. You can. In addition, if the head mounting plate and double insertion prevention piece are elastically connected, even if the double insertion prevention piece is strongly pressed when a cassette is inserted incorrectly, the negative effect of the pressing force on the head installation plate will be alleviated. can.

[Effects of the invention] According to the invention, at the same time as the cassette holder assumes the operating position, the double insertion prevention piece moves together with the head attachment member in a direction approaching the tape cassette and is positioned within the insertion opening of the tape cassette. do.

Furthermore, since the double insertion prevention piece of the present invention is set at the same height as the cassette insertion slot, it moves into the cassette insertion path of the playback device, requiring extra power to prevent incorrect cassette insertion. When the cassette holder moves to the operating position without
It is possible to provide a cassette double insertion prevention device that can prevent erroneous insertion of another cassette.

[Brief explanation of the drawing]

FIG. 1 is a plan sectional view of the cassette-type tape drive according to the invention taken along a plane perpendicular to the reel receiving axis before the tape cassette is inserted, and FIG. 2 is a plan sectional view after the tape cassette is inserted. FIG. 3 is a longitudinal sectional side view of the cassette type tape drive device along the tape cassette insertion line, and FIG. 4 is a longitudinal sectional front view taken in a direction perpendicular to the tape cassette insertion line, showing the state after the cassette has been inserted. 2...Cassette insertion slot, 3...Tape cassette, 4...Cassette holder, 11...Reel holder, 12...Head, 13...Head mounting member, 15...Double insertion prevention piece.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cassette insertion opening into which a tape cassette is inserted in a direction perpendicular to the axis of the reel receiver, and a tape cassette that is movable in the direction of the axis of the reel receiver. a cassette holder that can take a position for receiving a tape cassette inserted from the cassette insertion slot and an operating position for mounting the tape cassette on the reel holder; A cassette type tape drive device comprising: a head mounting member that moves the head to a tape contact position where the head comes into contact with the tape in the tape cassette; A double insertion prevention piece is provided that is positioned inside the cassette insertion slot only when the head mounting member moves to the tape contact position as the cassette holder moves to the operating position. Double loading prevention device for cassettes. (2) The double insertion cassette according to claim 1, wherein the double insertion prevention piece is slidably provided using an inner wall surface around the cassette insertion opening as a guide surface. Prevention device.