JPH059861B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cassette holder applied to a device for recording and reproducing signals using a tape cassette, such as an audio, video or data recorder. This invention relates to a cassette holder having means for preventing erroneous insertion for regulating the insertion direction of the cassette holder.

Conventional configurations and their problems In recent years, recording and reproducing devices using tape cassettes such as audio, video, and data recorders have diversified in usage and functions, and as a result, it has become difficult to attach the tape cassette to the device itself. Diversification of status is taking place.

For example, a videotape recorder (
In the so-called front loading of VTRs, a tape cassette is inserted into the front of the device with the tape stretched on the front facing the front, and the tape cassette is inserted into the main device. Insert the tape cassette into the raised cassette holder with the tape stretched across the front facing forward, and then complete the installation of the tape cassette into the main unit by pushing down the cassette holder toward the main unit. You can see things.

Generally, in order to allow insertion only in this predetermined direction, that is, the insertion direction with the tape stretched on the front facing forward (hereinafter referred to as the +Y direction), a protrusion is provided near the cassette insertion opening of the cassette holder. Notches are provided on the front surface of the tape cassette at positions that are asymmetrical with respect to the entire cassette. Then, for the normal insertion operation, the protrusion enters the notch according to the insertion operation of the tape cassette into the cassette holder, and the tape stretched on the front side is inserted as the rear side (hereinafter referred to as -Y direction). ), the convex part and the notch of the tape cassette do not correspond, so the tape cassette cannot be completely inserted into the cassette holder, and the insertion is incorrect. A method is used to communicate this to the user.

Furthermore, for insertion in the direction parallel to the longitudinal direction of the tape stretched on the front side (hereinafter referred to as the X direction) and insertion in the direction parallel to the width direction of the tape stretched on the front side (hereinafter referred to as the Z direction). However, an asymmetric outer shape with respect to the insertion direction is formed, such as a groove that restricts the insertion direction.

On the other hand, such a tape cassette is used in a conventional rack-type audio tape recorder as shown in FIG. When attempting to apply the tape cassette 2 to a device in which the notation 6 recorded on the tape cassette 2 can be read even after installation, the tape cassette 2 must be inserted into the cassette holder 3 in the -Y direction. After the first action shown by arrow 4, the mounting is completed by the second action shown by arrow 5, which pushes the cassette holder 3 toward the main unit 1. At this time, in the second operation, it is possible to determine whether the insertion of the tape cassette 2 into the cassette holder 3 is normal or incorrect due to the mis-insertion prevention shape provided in the thickness direction of the tape cassette 2, but in the first operation, i.e. , Regarding insertion in the -Y direction, since there is no mechanism to prevent incorrect insertion, the user will only be able to detect incorrect insertion after going through the process up to the second operation, and there are two steps to determine the insertion direction. This method has the problem of requiring the following operations.

Next, when reading the label 6 affixed to the tape cassette 2 while it is installed in the main unit, in the conventional structure, the tape cassette 2 is inserted into the main unit from the horizontal direction and the device is completed by moving it in the vertical direction. The user needs to shift his/her viewpoint to the top of the main device. On the other hand, +Y indicated by the arrow in Figure 1
If the main unit 1 is inserted from the opposite direction, there is a problem in that the printing direction of the label 6 and the direction of data characters such as recorded contents are reversed.

Purpose of the Invention The present invention is intended to solve the above-mentioned problems, and is to provide a tape cassette having a groove on the outside of the cassette case for preventing incorrect insertion parallel to the first insertion direction. It is possible to insert the tape cassette into the cassette holder in the second insertion direction and attach it to the main unit, and furthermore, before the second operation of pressing and moving the tape cassette to a predetermined position on the main unit in the stored state, to the cassette holder, It is an object of the present invention to provide a cassette holder that can prevent erroneous insertion in the first operation of inserting a tape cassette.

Structure of the Invention The present invention includes a cassette detecting section that comes into contact with the insertion tip of the tape cassette during a first operation and moves with the insertion of the tape cassette, and a cassette detecting section that engages with one end of the cassette detecting section. a rotating member that rotates as the tape cassette moves; and an intrusion member that is provided at one end of the rotating member and enters into the cassette holder as the rotating member rotates; The tape cassette is configured to allow the rotation member to rotate, and to allow the entry member to enter into the groove of the tape cassette.

DESCRIPTION OF THE EMBODIMENTS The present invention will now be described with reference to the attached examples.

FIG. 2A is a schematic perspective view of an embodiment of the tape cassette applied to the present invention, seen from the top, and FIG. It is. Note that only the main parts of the present invention will be explained here.

2 is a cassette case body which houses the tape 7 and reels 8 and 9 for winding the tape. A tape 7 shown by a dashed line is connected at its ends to two tape winding reels 8 and 9 and stretched over the front surface of the cassette case. 10 is tape 7
This is a shielding member to protect the product from dirt, etc. When the tape cassette is attached to the main unit, it rotates in the direction of arrow 11 and becomes open, exposing the tape 7 inside, but otherwise it is in the closed state, and if there is no other object on the tape 7. This prevents contact between the two. The chamfered portions 10-a and 10-b formed on the shielding member 10 are provided for the purpose of preventing incorrect insertion when inserting into the main device from the X direction indicated by the arrow in the figure. .

The concave groove 12, which is parallel to the +Y direction in the drawing and gives the tape cassette an asymmetrical external shape, is located in the direction in which the tape cassette 2 is inserted into the main unit.
This insertion detection groove only allows insertion from the +Y direction, and insertion is completed when the convex part provided at the bottom of the cassette holder (not shown) fits into the groove 12.If the tape cassette is inserted incorrectly, teeth,
Since the grooves are asymmetrically provided, the grooves 12 do not enter into the convex portion of the cassette holder, but come into contact with the outer shape of the tape cassette, making it impossible to insert the tape cassette. The concave groove in the tape width direction (Z direction in the figure) that gives the tape cassette an asymmetrical external shape is a groove to prevent incorrect insertion in the Z direction. This is provided to prevent incorrect insertion. The recess 14 in the outer shape of the cassette tape is used to insert a post for pulling out the stretched tape 7 to the tape running system within the main unit. Reference numeral 6 denotes a label pasted on the tape cassette 2, on which the recorded contents of the signals recorded on the tape 7, data characters, etc. are written.

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

FIG. 3 is an exploded perspective view showing the structure of the main parts of the cassette holder 3 according to the embodiment of the present invention, with a partial cross section shown for ease of understanding. 16
20 is the bottom plate of the cassette holder; 20 is the pin 21-a installed on the side plate 21 of the cassette holder 3;
This is a tape cassette detection section that is guided by 21-b and is attached to be freely movable in the direction of arrow 22. The spring 23 is stretched between the pin 21-a and the tape cassette detection section 20, and is used to bias the tape cassette detection section 20 in the opposite direction to the arrow 22 when the tape cassette 2 is not inserted. It is something. The rotating member 24 has a pin 21-c set up on the cassette holder side plate 21 as a fulcrum,
Pin 20 planted in tape cassette detection section 20
-a is engaged with the elongated hole 24-b, rotates in conjunction with the movement of the pin 20-a, and the cassette holder side plate 21
It has a pin 24-a that is an intrusion member that enters into the inside through the upper notch 25 and into the groove 13 (see FIG. 2B) that is asymmetrically formed in the tape width direction of the tape cassette 2. . In addition, 26 in the figure
27 corresponds to the upper plate 15 of the cassette holder 3 shown in FIG. This is a window section through which the user can confirm that the device is attached to the main device.

The operation of the cassette holder constructed as described above will be explained below.

FIG. 4 is a side view showing the state immediately before the tape cassette 2 is inserted into the cassette holder 3. That is, when the tape cassette 2 is inserted into the cassette holder 3 from the -Y direction shown in the figure, the rear surface 2-a of the tape cassette 2 comes into contact with the tape cassette 2, and the tape cassette detection section 20 is moved in the -Y direction. move it. Accordingly, the rotating member 24, which is engaged with the elongated hole 24-b formed on the rotating member 24 and the pin 20-a set up on the tape cassette detection section 20, is connected to the cassette holder. Side plate 2
The pin 24-a, which is set on the rotating member 24, is formed at an asymmetrical position in the height direction of the cassette. By entering the recessed groove 13, the insertion is completed as shown in FIG.

However, as shown in FIG. 6, if there is no concave groove 13 in the tape width direction at a position l from the rear surface 2-a of the tape cassette, that is, the insertion direction is not the correct direction for the main unit, but the insertion direction is incorrect. In the case of the insertion operation, 24-a comes into contact with the bottom in the insertion direction, making it impossible to rotate about 21-c as a fulcrum.
The tape cassette detection section 20 is prevented from moving in the -Y direction, thereby restricting insertion of the tape cassette.

Effects of the Invention The cassette holder of the present invention comes into contact with the front part of the tape cassette in the insertion direction and moves along with the tape cassette during the first operation of inserting the tape cassette into the cassette holder in a direction perpendicular to the tape width direction. A moving tape cassette detection section, and an intrusion member that engages with the tape cassette detection section, rotates in the height direction of the cassette case as the tape cassette moves, and enters a groove in the outer shape of the cassette case. By providing the cassette holder with an erroneous insertion prevention means constituted by the above, the insertion direction can be restricted even when the tape cassette is inserted from a direction that does not have an erroneous insertion prevention groove parallel to the insertion direction. This allows the user to directly view the label on the tape cassette, the remaining amount of tape, etc. when the tape cassette is attached to the main unit.It also allows the user to insert the tape cassette from the Y direction. I can,
Its practical effects are great.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional rack type tape cassette inserted into the main unit; Fig. 2A is a front perspective view of the tape cassette used in the present invention; FIG. 3 is an exploded perspective view showing a partial cross section of the main part of the cassette holder according to the present invention, FIGS.
6 are side views showing the principle of preventing incorrect insertion of the cassette holder of the present invention. 1... Main unit, 2... Cassette case, 3...
...Cassette holder, 6...Label, 7...Tape, 12...Mirror insertion detection concave groove when inserting the tape into the main unit with the tape stretching direction facing forward, 13...Merroneous insertion detection regarding insertion in the tape height direction Concave groove, 2
0... Tape cassette detection section, 24... Rotating member, 24-a... Intrusion member.

Claims (1)

[Claims] 1. Following the first operation of inserting a tape cassette with a groove extending in the thickness direction that is asymmetrically formed on the outside and with the tape stretched on the front surface in a direction perpendicular to the thickness direction, A cassette holder that completes mounting of the tape cassette at a predetermined position on the main unit by a second operation of moving the tape cassette in a stored state toward the main unit, wherein the tape cassette is inserted at the insertion tip during the first operation. a cassette detection section that comes into contact with the tape cassette and moves with the insertion of the tape cassette; a rotating member that engages with one end of the cassette detection section and rotates as the cassette detection section moves; an intrusion member that is provided at one end and enters into the cassette holder by rotation of the rotary member, the rotary member is rotatable in accordance with the insertion direction of the tape cassette, and the intrusion member is moved into the cassette holder. A cassette holder characterized by being able to enter into a concave groove of a tape cassette.