JPS638546B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape cassette adapter used when, for example, a tape cassette smaller than a standard type is installed in a standard type recording/reproducing machine, and the present invention relates to a tape cassette adapter that is used when a tape cassette smaller than a standard type is attached to a standard type recording/reproducing machine. By providing a small tape cassette storage section in the case body, and providing an operating mechanism for opening and closing the front lid of the case body and a mechanism for maintaining the front lid in the open state, it is possible to easily remove tape from the stored small tape cassette. To provide an adapter for a tape cassette in which there is no fear that the tape will be damaged by a front cover when it is pulled out to form a predetermined tape path.

If you want to use a small tape cassette used in a recording/playback machine such as a video tape recorder in a recording/playback machine that is larger than this small tape cassette, for example, a standard type tape cassette, you must use a small tape cassette. You will need an adapter to convert it to a standard tape cassette. If the tape path of a small tape cassette is configured the same as that of a standard tape cassette, this adapter may simply serve as a housing. Even though it is small, it is not that small because the tape path is the same as that of a standard type tape cassette. Therefore, in order to make a small tape cassette substantially smaller, for example, the supply reel in the small tape cassette must be In order to make the distance from the take-up reel smaller than that of a standard type tape cassette, and to record and play back a small tape cassette configured in this way on a standard type recording/playback machine, an adapter can be used to connect the small tape cassette to the standard type. The tape path must be changeable to accommodate standard types of recording/playback equipment.

The present invention has been made in accordance with the above object, and examples thereof will be described below.

Figure 1 is a perspective view of a tape cassette that is smaller than a standard type tape cassette that is used, for example, in a standard type recording/reproducing machine, with its front lid open, and Figure 2 is a perspective view of the upper half of this small cassette. FIG. 3 is a sectional view.

In the figure, A is a small cassette, and the frame of this small cassette A consists of an upper half 1, a lower half 2, and a front cover 3 for protecting the tape. It is rotatably attached to the upper part by a support shaft 4. One end of the sliding piece 7, which is held so as to be able to slide in the groove by being pressed by a substantially U-shaped spring 6 inserted into a groove 5 bored in the side surface of the upper half 1, is attached to the front cover 3. When the front cover 3 is in the closed state, the front cover 3 is maintained in that state, and when the front cover 3 is opened, the open state is maintained.

A supply reel 8 and a take-up reel 9 are arranged in the small cassette A, and the distance between the supply reel 8 and the take-up reel 9 is such that the distance between the supply reel 8 and the take-up reel 9 is a standard type that cannot be installed only in the small cassette A. The distance is shorter than the distance between the supply reel disk and the take-up reel disk of the recording/reproducing machine.
Further, the magnetic tape 10 is arranged such that it runs along a predetermined running path between the supply reel 8 and the take-up reel 9. That is, the magnetic tape 10 is moved from the supply reel 8 to the guide pole 11.
a, 12a, 12b, and 11b, and then wound onto the take-up reel 9. An uneven groove 14 is formed on the lower surface of the lower flange 13 of the supply reel 8, and an uneven groove that meshes with the uneven groove 14 is also formed at a predetermined position of the lower half 2 corresponding to the uneven groove 14 of the lower flange 13. 15 is formed, and the supply reel 8 is biased toward the lower half 2 by the action of a leaf spring 16 attached to the upper half 1, and the uneven grooves 14 and 15 mesh with each other, and the supply reel 8 is fixed to prevent the magnetic tape wound on the supply reel 8 from loosening. When the small cassette A is installed in the recording and reproducing machine, the supply reel 8 is lifted by the supply reel disk 90 of the recording and reproducing machine by a specified amount toward the half 1 side against the repulsive force of the leaf spring 16. , the engagement between the uneven grooves 14 and 15 is released and rotation becomes possible. That is, in the lower half 2 at a position corresponding to the supply reel 8, there is a hole 17 for inserting the supply reel disk 90 of the recording/reproducing machine.
is formed, and the supply reel disk 90 is inserted into the supply reel 8. The take-up reel 9 also has a shaft 18 fixed to the lower half 2.
The shaft 18 is inserted into the shaft 18 and is rotatable around the shaft 18.

A brake mechanism is disposed on the take-up reel 9 so that the take-up reel 9 does not rotate when the small cassette A is not installed in the recording/reproducing machine. This brake mechanism consists of a brake 20 that presses the upper surface of the peripheral edge of the lower flange 19 of the take-up reel 9. This brake 20 is inserted into a shaft 21 formed integrally with the lower half 2, and is mounted on a spring. In the state where it is pressed and energized by the action, the shoe portion 20a of the brake 20 comes into pressure contact with the surface of the lower flange 19, so that the take-up reel 9 does not rotate and the magnetic tape does not loosen.
Note that when the small cassette A is attached to a recording/reproducing device or an adapter described later, a force is applied that resists the repulsive force of the spring, the shoe portion 20a of the brake 20 is separated from the lower flange 19 surface, and the take-up reel 9 is rotated. Be able to move. The rotation of the take-up reel 9 is as follows:
Unlike the system of the supply reel 8, teeth 2 formed on the peripheral side surface of the lower flange 19 of the take-up reel 9
This is done by means of a driving force transmission medium meshing with 2. Therefore, a notch 23 is formed in the lower half 2 so that the driving force transmission medium can mesh with the teeth 22 when the small cassette A is attached to a recording/reproducing machine or an adapter to be described later.

FIGS. 4a and 4b are schematic illustrations of the tape cassette adapter according to the present invention, and FIGS. 5a and 5b are illustrations of the main parts.

In the figure, reference numeral B designates an adapter having an external shape that is approximately the same as that of a standard type tape cassette.This adapter B consists of a frame body consisting of a front lid 30, an upper half 31, and a lower half 32, and has a storage section for storing a small cassette A. is configured.

Reference numeral 33 denotes an operating lid that is provided on the back of the adapter B so that it can be opened and closed by a support shaft 34. When this operating lid 33 is opened, a sliding lever 35 that is slidably provided by a known means is opened. Move to the left in FIG. 4a, press one end of the L-shaped lever 37 provided around the support shaft 36, rotate clockwise, and connect the connector 38 connected to the other end. Move it upward in Figure 4a, and then connect the connector 38.
Since the projection 40 provided on the support shaft 39 of the front lid 30 is connected to the tip of the front lid 30, the front lid 30 can be opened by the above operation.

41 is a member having a generally concave cross section, and this member 41 is fixed to the inner wall surface between the small cassette storage section and the rear surface of the adapter, and is connected to the sliding lever 3.
5 is provided so as to be able to slide on the underside of the member 41. This member 41 and the sliding lever 35
A spring 42 connects a predetermined position between the two, and the tensile force of the spring 42 biases the sliding lever 35 to the left in FIG. It is configured. That is, the front lid 30
Even if the spring 4 is rotated from the open state to the closed direction by its own weight or other force, the spring 4
The open state is maintained by the force of 2.

43 is a guide frame 4 inside the tip of the operation lid 33.
This is a locking member for the operation lid 33 disposed on the adapter B, and the tip of the locking member 43 is configured so that it can be hooked into a recess in the frame of the adapter B.
Incidentally, 45 is a spring, and the locking member 43 is always urged to pop out due to the force of this spring.

In the adapter configured as described above, when a force is applied to the locking member 43 that resists the force of the spring 45 to release the locking of the operating lid 33 by the locking member 43, the tension of the spring 42 The sliding lever 35 slides to the left in FIG. 4a, rotates the L-shaped lever 37 clockwise, moves the connector 38 upward, and opens the front cover 30 to maintain it in the fully open state. become. That is,
When the operating lid 33 is unlocked, the front lid 30 will automatically open fully, and will remain fully open, so the front lid 30 will open regardless of the opening angle of the operating lid 33. It is always open, and when the tape is pulled out from the small cassette, the tape hits the front lid and gets damaged, making it unusable.

For example, as shown in FIG. 6, this tape pull-out mechanism is such that when the magnetic tape is set in the adapter with the front lid 3 of the small cassette A open without pulling out the magnetic tape from the small cassette A, the magnetic tape is inserted into the notch 24 of the small cassette A. Loading levers 51, 52 that come into position, these loading levers 51, 52
Guide rollers 53, 54 provided at the tip of the
An operating lever 55 is provided at a position where it can be operated when the operating lid 33 is opened. When the operating lever 55 is moved from the two-dot chain line position to the solid line position in FIG. 6, the loading levers 51 and 52 move from the two-dot chain line position to the solid line position. It is connected to an operating lever 55 as a driving force transmission medium section for rotating the magnetic tape in the small cassette A to the position and pulling it out by guide rollers 53 and 54 to form a predetermined tape path. Connectors 56 and 57, an L-shaped lever 58 connected to the connector 56, a lever 59 connected to the L-shaped lever 58, and a lever 6 connected to the lever 59.
0, a gear 61 provided integrally with the lever 60, a gear 6 provided integrally with the loading lever 51;
2 and a gear 61, a rotary lever 64 connected to a connector 57, and a loading lever 52. and,
When the operating lever 55 is rotated from the two-dot chain line position to the solid line position, the connector 57 is moved, and the rotary lever 64 is rotated clockwise around the support shaft. Therefore, the loading lever 52 moves around the spindle from the position shown by the two-dot chain line to the position shown by the solid line, and the magnetic tape is pulled out from the small cassette by the guide roller 54, and the connector 5
6, the L-shaped lever 58 rotates clockwise about the spindle, moving the lever 59 to the right in FIG. As a result, the belt 63
, the loading lever 51 is rotated clockwise from the two-dot chain line position to the solid line position, the magnetic tape is pulled out from the small cassette by the guide roller 53, and the standard type magnetic tape is pulled out by the guide rollers 53 and 54. A tape path that is substantially the same as the tape path of the tape cassette is now formed. As mentioned above, when the operation lever 55 is operated, the operation cover 33 is in an open state, so the front cover 30 of the adapter B is always open, and the loading lever 51 is not activated when forming a tape path. The magnetic tape safely forms a tape path without colliding with the front lid 30 and without being damaged, and after forming the tape path, the operation lid 33 is closed and the front lid 30 is kept closed.

7 and 8 are schematic illustrations of other embodiments of the tape cassette adapter according to the present invention.

In the same figure, C is an adapter consisting of a frame similar to that of the previous embodiment, and this adapter has a storage section for storing a small cassette, and further includes a tape as explained in FIG. 6 of the above embodiment. A withdrawal mechanism is provided.

An operating lid 73 is provided on the back of the adapter C so that it can be opened and closed by a support shaft 74. When this operating lid 73 is opened, a sliding lever 75 that is slidably provided is moved to the left in FIG. direction, supporting shaft 76
Press one end of the L-shaped lever 77 provided at the center and rotate it clockwise to move the connector 78 connected to the other end upward in FIG. Since the protrusion 80 provided on the support shaft 79 of the front cover 70 is connected to the front cover 70, the front cover 70 is configured to be opened by the above operation.

81 is a spring attached to bias the sliding lever 75 in the right direction in FIG. 7, and the force of this spring 81 always applies a force in the closing direction to the operating lid 73 In the natural state, the operating lid 73
is in the closed position.

Reference numeral 82 denotes a sliding lever locking member disposed on the adapter below a predetermined position of the sliding lever 75, and a hooking portion 83 of this locking member 82 is fitted into a hole 84 formed in the sliding lever 75. By doing so, the sliding lever 75 is prevented from moving. That is, when the operating lid 73 is fully opened against the force of the spring 81 and the front lid 70 is fully opened, the hooking portion 83 of the locking member 82 engages with the hole 84 of the sliding lever 75.
The sliding lever 75 is positioned so that even if a slight force in the closing direction is applied to the front lid 70, the front lid does not move and remains fully open. . Therefore, if the front cover 70 is not fully opened once, the latch 8 of the lock member 82 will close.
3 does not fit into the hole 84 of the sliding lever 75, and the sliding lever is not regulated by the locking member, the operating cover 73 is closed by the force of the spring 81, and the operating lever cannot be operated. If the tape is pulled out from the small cassette by operating the tape pull-out mechanism, the tape cannot be drawn out.

Note that 85 is a spring that biases the hooking portion 83 in a direction to push it out, and 86 is a cap that prevents the hooking portion 83 from jumping out from the frame.

Note that when a relatively large force is applied to the operating lid 73, the upper part of the hooking part 83 of the locking member 82 has a substantially hemispherical shape. The latch part 83 is pushed in against the force, the fitted state between the hole 84 and the latch part 83 is released, and the operating cover 73 is automatically closed by the force of the spring 81, and the front cover is closed. 70 will also be closed.

That is, in the above embodiment, the front cover is automatically set to the fully open state when an attempt is made to open the operating cover, whereas in this embodiment, the front cover must be fully opened. The operating lid is configured to close.

In either configuration, the tape in the small cassette can be pulled out when the front lid is fully open, so there is no possibility that the tape will be damaged by hitting the front lid of the adapter when forming a tape path. This allows for good tape path formation, and since the operation lid is regulated to be fully open, the operation lid does not get in the way when operating the operation lever to operate the tape pull-out mechanism. Moreover, the operability is also improved.

As mentioned above, the tape cassette adapter according to the present invention is an adapter with a front cover used when a tape cassette smaller than a standard type tape cassette is attached to a standard type recording or reproducing machine. It is equipped with an operating mechanism that opens and closes the front cover, and a holding mechanism that locks the operating mechanism to maintain the open state of the front cover opened by the operation of the operating mechanism, so that it is possible to easily store small tapes. When the tape is pulled out from the cassette to form a predetermined tape path, there is no risk of the tape being damaged by the front cover, and the tape path forming operation is smooth.

[Brief explanation of the drawing]

Figures 1 to 3 are illustrations of a small cassette, Figures 4a, b, and 7 are illustrations of the main mechanism of an embodiment of the tape cassette adapter according to the present invention, and Figure 6 is an illustration of the tape pull-out mechanism. Figures 5a, b and 8
The figure is an explanatory diagram of the main part. A...Small cassette, B, C...Adapter, 3
0,70...Front lid, 33,73...Operation lid, 3
5,75...Sliding lever, 37,77...L-shaped lever, 38,78...Connector, 42,81
...Spring, 43, 82...Lock member.

Claims (1)

[Claims] 1. An adapter with a front lid used when a tape cassette smaller than a standard type tape cassette is attached to a standard type recording or playback machine, and includes an operating mechanism for opening and closing the front lid, and an operation mechanism for opening and closing the front lid, and 1. A tape cassette adapter comprising a holding mechanism that locks the operating mechanism to maintain the open state of the front cover opened by operating the mechanism.