JPS6325561Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an adapter for a small tape cassette, and when the tape loading in the adapter is not completed, the operation knob remains protruding from the outer surface of the adapter, making it impossible to attach it to a recording/playback device. An object of the present invention is to provide an adapter for a small tape cassette that is configured to prevent incorrect installation.

The present applicant has previously proposed a tape cassette that is smaller than the standard tape cassette, and an adapter for use in attaching this small tape cassette to a standard recording/reproducing device. After storing this adapter's small tape cassette and performing tape loading to form a tape path in the adapter that corresponds to the front tape path of the standard tape cassette, proceed as in the case of the standard tape cassette. , attached to a recording/playback device. By the play operation, the tape is pulled out from the adapter and wound around the drum, and the playback operation is performed.

In the above adapter, the operating lever for rotating the loading arm is housed near the back of the adapter and is closed by a locally provided lid. and,
When storing a small cassette in the adapter and loading tape, open the lid and rotate the operating lever in one direction by a specified angle (during this rotation, the operating lever will protrude to the back of the adapter). After completion, the operating lever is further rotated to store it in the adapter and close the lid. During this time, the loading arm is rotated from the unloading position to the loading position and the tape path is formed. .

However, according to this, an adapter equipped with a small cassette cannot visually determine whether the tape is in the small cassette (unloading state) or in the tape path (loading state), and the tape may be unloaded. Even in this state, the adapter is attached to the recording/playback device. Then, the tape loading mechanism within the apparatus becomes idle without engaging the tape, and no matter how long one waits, the reproduced image does not appear, creating a problem in which the operator feels strange. Another problem was that the lid of the adapter had to be opened and closed each time a small cassette was attached to or removed from the adapter, which was troublesome.

The present invention solves the above problems, and one embodiment thereof will be described below with reference to the drawings.

1 and 2 are a plan view of an embodiment of the small tape cassette adapter according to the present invention, and a partial plan view of the main parts thereof with the top plate removed. In the figure, the small tape cassette adapter 1 is
It has substantially the same external dimensions as a standard tape cassette, has a small tape cassette storage section 2 inside, and is further equipped with loading arms 5, 6, etc. each having a pole 3, 4 at its tip. There is. Note that each arm 5, 6 rotates around pins 7, 8 as a fulcrum.

Reference numeral 9 denotes a rotatable operating knob, which has a large-diameter operating portion 9a only in an angular range of, for example, 150° on the outer periphery as shown in FIGS. A pair of day tent recesses 9c, 9d
, and is pivoted to the right of the adapter 1. Before the small cassette is attached, the operating knob 9 is at the counterclockwise rotation limited position as shown in Fig. 2, and the ball 28 held on the intermediate plate (not shown) elastically engages with the day tent recess 9c to clickly position it. The large diameter operation part 9
One end of a protrudes from the right outer surface of the adapter 1.

10 is a special chain with 3 links 11,1
2 and 13 are connected by pins 14 and 15,
The link 11 is pivoted to the arm 5 by a pin 11a, and the link 13 is connected to the operating knob 9 by a pin 13a.
The pins 14, 15, and 13a are supported by a gear (not shown) that rotates integrally with the pin 21, and the pins 14, 15, and 13a are always guided by a J-shaped guide groove 21a (shown in FIG. 2) of the fixed guide plate 21.

22 is a small tape cassette, as shown in Figure 6.
A magnetic tape 23 is stored therein, and a lid 25 is provided on the front surface of the lid 25, which can be opened by rotating upward by 90 degrees using a pin 24 as a fulcrum.

Next, the attachment of the small tape cassette to the adapter and the formation of the tape path will be explained. The small tape cassette 22 is stored in the storage section 2 of the adapter 1 shown in FIG.
is closed.

Subsequently, the user operates the large-diameter operating portion 9a of the operating knob 9 with a fingertip to rotate the operating knob 9 clockwise.
Then, the special chain 10 has each pin 14, 15, 1
3a moves while being guided by the guide groove 21a, the arm 5 is pulled by the chain 10 and begins to rotate clockwise, and at the same time, the arm 6 also rotates counterclockwise via a link and a gear train (both not shown). Start rotating in the direction. As the arms 5 and 6 rotate, the tape 23 is gradually drawn out from the small tape cassette 22 by the poles 3 and 4. Finally, the operating knob 9 rotates to the position shown in Figure 3, the ball 28 is engaged with the other detent recess 9d, and it clicks to a stop, and the arms 5 and 6 rotate to the loading completion position shown in the figure. However, the tape 23 is attached to the balls 3 and 4 which function as guide poles after loading is completed.
is guided to form the front tape path 27 of the standard tape cassette. This allows adapter 1
The device enters a loading complete state as shown in FIG. 3, and becomes ready to be installed in a standard recording/reproducing device. Note that the operation knob 9 actually rotates, for example, 210 degrees from FIG. 1 to FIG. 3, and in the state shown in FIG. I'm sinking down. Therefore, when the adapter 1 is attached to the cassette housing of a recording/reproducing apparatus, the large-diameter operating portion 9a can be smoothly attached to the housing without any abutting interference.

Here, when the operating knob 9 is rotated by an angle less than the predetermined angle of 210 degrees, as shown in FIG. I haven't reached it yet. If the adapter 1 in this state is attached to a recording/reproducing apparatus, the tape 23 cannot be properly loaded into the recording/reproducing apparatus, resulting in the inconvenience that recording, reproduction, etc. cannot be performed. However, according to this embodiment, when the operating knob 9 is in the middle of rotation as shown in FIG. The diameter operating portion 9a is configured to abut against and interfere with the cassette housing of the recording/reproducing device and cannot be mounted on the housing, thereby preventing the above-mentioned inconvenience.

Next, when removing the small tape cassette 22 from the adapter 1 that has been removed from the cassette housing of the recording/reproducing device, first insert the other end of the large diameter operating portion 9a of the operating knob 9 into the notch 2 of the adapter 1, as shown in FIG.
9 to rotate the operating knob 9 counterclockwise and return it to the position shown in FIG. 1, thereby returning the arms 5 and 6 to the position shown in FIG. 1 to complete tape unloading. Therefore, the small tape cassette 22 can be taken out from the adapter 1 in this state.

According to the mechanism of the operating knob 9, the large-diameter operating portion 9a for operation is provided only within a certain angular range of the operating knob 9, so that it sinks inward without protruding from the outer surface of the adapter 1 when tape loading is completed. Therefore, no cover or the like is required on the outer surface of the adapter 1, and the configuration and operation of the operation knob 9 can be simplified.

As described above, according to the adapter for a small tape cassette of the present invention, when a small tape cassette is attached to the adapter and tape loading is not completed, the large diameter operation part of the operation knob for loading operation is connected to the adapter. It remains protruding outward,
This prevents the adapter from coming in contact with the cassette housing of the recording/playback device and preventing it from being installed, so only the adapter that has been loaded can be installed at all times, and if an adapter that has not been loaded is installed, playback will not occur no matter how long you wait. Inconveniences such as not being able to obtain an image can be prevented, and the large-diameter operation part normally only needs to protrude to the outside of the adapter, but only when loading is completed can it sink into the adapter instead of protruding from the outside of the adapter. It has the advantage of simplifying the configuration and operation without requiring a lid to cover the operation knob.

[Brief explanation of the drawing]

1 and 2 are a plan view of one embodiment of the small tape cassette adapter according to the present invention, a partial plan view of the main part of the adapter with the top plate removed, and FIG.
4 and 4 are plan views of the adapter in a fully loaded state and in the middle of loading, respectively. FIGS. 5A to 5C are plan views, bottom views, and side views of the operation knob of the adapter. FIG. 6 is a view of the small tape cassette. FIG. 1...Adapter, 5, 6...Tape loading arm, 9...Operation knob, 9a...Large diameter operation section, 10...Special chain, 21...Guide plate,
22...Small tape cassette, 29...Notch recess.

Claims (1)

[Scope of utility model registration request] This is an adapter for a small tape cassette that is used when a tape cassette smaller than a standard tape cassette is attached to a recording/playback device for the standard tape cassette, and has a large-diameter operating section only in a certain angular range provided on the outside. A rotary operation knob that is rotated in conjunction with the rotation of the operation knob, pulls out the tape from a small tape cassette housed in the adapter, and inserts a tape corresponding to the tape path of the standard tape cassette into the adapter. The large-diameter operating portion of the operating knob sinks inward without protruding from the outside of the adapter only when the tape in the small cassette forms the tape path. , otherwise an adapter for a small tape cassette configured to project outwardly.