JPH0766604B2 - Cassette tape player - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called card type tape cassette tape reproducing machine which is thinner than a commercially available compact tape cassette (thickness 8 mm).

[0002]

2. Description of the Related Art The present applicant has proposed a tape reproducing apparatus of this type as disclosed in Japanese Patent Laid-Open No. 3-25782, and a card-type tape cassette as Japanese Patent Laid-Open No. 3-16073. Those described and Japanese Patent Application No. 2-
No. 318850 was proposed.

Since the cassette is thin, the magnetic head cannot enter the cassette case, and the tape running portion is opened when the cassette is loaded (see the embodiment). As the opening means, in the tape reproducing machine of the above-mentioned publication, a projecting plate 60 is provided on the front surface in the insertion direction of the tape cassette A as shown by the chain line in FIG.
With this insertion, the closing plate (shutter) 18 is retracted by the projecting plate 60 to open the tape running portion 16.

However, in this means, since the tape 1 exists in the traveling direction of the projecting plate 60 with respect to the tape cassette A,
It is very difficult to adjust the position of the projecting plate 60.
There is a high possibility that the projecting plate 60 touches the tape 1 and is damaged.

Since this type of card cassette A is thin in terms of sound quality and the like, it must be held (set) more firmly in the tape player. Therefore, in the above publication, both side portions of the tape cassette A are supported by the guides 58.

In view of the above points, an object of the present invention is to firmly hold the tape cassette and to open the closing plate without touching the tape.

[0007]

In order to solve the above-mentioned problems, according to the present invention, in a tape reproducing machine for loading and reproducing the above-mentioned known card type tape cassette, a tape cassette loading portion of its casing. On both sides of the magnetic head, guides in the insertion direction of the tape cassette are provided separated by the lateral width of the tape cassette, and the guide groove of this guide has a cross-sectional shape in which the case front side end portion is fitted exactly.
And, the length of the guide is set so that when the tape cassette is inserted into the casing and set, the guide end surface abuts the closing plate against its front edge or its projection and retracts to open the opening. I did.

In addition, the guide groove of the guide has a cross-sectional shape in which the end portion on the front side of the case fits snugly, and the front edge or projection of the closing plate does not interfere with the insertion of the end portion on the front side of the case into the guide groove. When the tape cassette is set by inserting the tape cassette into the casing, the projection comes into contact with the front edge of the closing plate or the projection and retracts to open the opening. It is also possible to set the configuration to.

[0009]

In the cassette tape reproducing apparatus according to the present invention having the above-described structure, the tape cassette is loaded with the guide as a guide, as in the conventional case. At this time, the end face or the projection of the guide abuts the closing plate, the closing plate retracts as the cassette is inserted, and the tape running portion, that is, the front opening is opened, and the magnetic head faces it.

[0010]

EXAMPLE First, the card type tape cassette A will be described. As shown in FIGS. 1 and 7 to 10, the case 1
0 is a base portion 11 forming the inside, and the surface of the base portion 11
It is composed of a front plate 12a and a back plate 12b that cover the back surface. The base portion 11 is divided at the center surface in the thickness direction, and both divided members and the front plate 12a or the back plate 12b are integrally molded with a synthetic resin.
a and 13b have the same shape. The size of the case 10 is the largest size that can be accommodated in a case (half) of a compact cassette that has been commercially available in the past. Also, the length and width of the magnetic tape 1 accommodated therein are the same as those of the magnetic tape of the compact cassette.

The base portion 11 is formed with both hub winding portions 14 and 15 of the magnetic tape 1 and a traveling path 17 extending from the hub winding portions 14 and 15 to a front opening 16 through which both ends of the front surface of the case 10 are inserted. The front surface portion 11a and the rear surface portion 1
1b is continuous between the hub winding portions 14 and 15.

A pair of tape guides 21 are provided on the front surface of the base 11 so that a head pad 22 is fitted between the tape guides 21. The tape guide 21 causes the magnetic tape 1 to swing. It smoothly runs without recording, and recording / reproducing is performed by supporting the running magnetic tape 1 with a head pad 22 and slidingly contacting the magnetic head.

Further, a closing plate 18 of a flat rectangular tube is fitted on the front surface of the case 10 so as to be movable back and forth.
This closing plate 18 is divided so that one side can be opened,
This one side is opened and fitted into the case 10, and then a stop plate 18a with a projection 18c is adhered to the one side so that the case 10 cannot be removed (see FIG. 8). That is, the closing plate 18 fits into the recesses 12c on the front and back surfaces of the case (see FIG. 7). The stop plate 18a may be only a flat plate having no protrusion 18c (when the slit 10a described later is formed).

The base portion 11 behind the head pad 22
Is provided with a leaf spring 20, and both ends of the leaf spring 20 contact the contact pieces 18b of the closing plate 18 to push the closing plate 18 to the front side. Therefore, the closing plate 18 always closes the opening 16 to protect the magnetic tape 1. On the other hand, the closing plate 1
When 8 retreats against the leaf spring 20, the upper and lower surfaces of the opening 16 are opened and the magnetic head 56 and the pinch roller 5 described later are opened.
7 can be inserted.

On the rear surface of the rear surface portion 11b of the base portion 11, a recording erasure prevention means 40 is provided as shown in FIGS. The recording erasure prevention means 40 is provided with a plug 4 in the hole 41.
2 is inserted, and by removing the plug 42, the claw (the same as the conventional one) of the tape recorder (reproducing device B) is inserted into the hole 41 and recording becomes impossible. In the figure, 23 is a stainless steel pad.

The above is the configuration of the tape cassette A. Next, a cassette tape player according to the present invention in which the tape cassette A is loaded will be described.

As shown in FIG. 1, the reproducing apparatus B comprises a main body 50 having a space S for accommodating the tape cassette A and a lid 51 attached to the front edge of the main body 50 so as to be openable and closable. Although not shown in the figure, the main body 50 has a built-in one that exhibits a function as a tape recorder such as a motor and an electronic circuit. The hubs 1a and 1b of the tape cassette A are fitted to the bosses 52 and 52 on the left and right in the middle of the space S, respectively.
The bosses 52, 52 are provided in the same manner as in the past.
The tape 1 is wound by the rotation of. Further, a microphone terminal 53, an earphone terminal 54, and operation switches 55 for recording, fast-forwarding, playing, etc. are provided on the peripheral side surface of the main body 50.

On the inner front surface of the lid 51, a magnetic head 56,
A pinch roller 57 is provided, and guides 58, 58 having an L-shaped cross section are provided on the side of the pinch roller 57 so as to be separated by the lateral width of the tape cassette A. The groove 58a in the guide 58 has a cross-sectional shape in which the front end portion of the tape cassette A is fitted. Therefore, the tape cassette A is inserted between the guides 58, 58 without rattling. On the other hand, the closing plate 1
Since the projection 18c of No. 8 projects from the side surface of the tape cassette A, when the tape cassette A is inserted into the guides 58, 58 as shown in FIG.
8c abuts against the end surface 58b of the guide 58 and retracts, and the front opening 16 is opened. This open front opening 16
The magnetic head 56 faces and contacts the tape 1. If the operation switch 55 is operated in this set state, recording,
Playback etc. can be performed. Therefore, the length h of the guide 58
In the set state, the front opening 16 is open, that is, the obstruction plate 18 so that the magnetic head 56 faces without any trouble.
Set to retract.

The guide 58 may be formed only by a member having a U-shaped cross section shown in FIG. Further, in any of the L-shaped cross section and the U-shaped cross section, as shown in FIGS. 4 and 5, a protrusion 59 may be provided in the groove 58a, and the closing plate 18 may be retracted by the protrusion 59. At this time, the distance between the two guides 58, 58 is increased by a larger amount by the amount of protrusion of the protrusion 59 than the above, but as shown by the chain line in FIG. If provided, the space between the two guides 58, 58 may be the same as described above. In the case of the protrusion 59, the lateral movement of the tape cassette A is restricted by the contact between the protrusion 59 and the side surface of the case 10. However, in the case of FIG. 4 in which the slit 10a of FIG. When the side of case 10 touches (protrusion 5
There is also a case where the protrusions of 9 and the guide 58 are not separated from each other. Therefore, the projection 59 or the inner surface of the groove 58a is performed. By the way, the movement of the tape cassette A in the thickness direction is restricted by the contact between the case 10 and the inner surface of the guide 58 in the width direction of the groove 58a. By the above movement regulation, the tape cassette A is supported without rattling the guide 58, and
It is set in the main body 50 by closing 1. In addition, the position of the protrusion 59 is set when the tape cassette A is set.
Needless to say, the closing plate 18 is set to be retracted to a position where it does not interfere with the magnetic head 56.

In the above-described embodiment, the closing plate 18 is fitted in the recessed portion 12c on the front and back surfaces of the case. However, if the recessed portion 12c is not formed, the entire end surface of the closing plate 18 should project from the entire circumference of the case 10. Becomes Therefore, as shown in FIG.
When the tape cassette A is inserted into the guide 58, the closing plate 1
The end surface of 8 comes into contact with the end surface of the guide 58 and moves backward.
In this case, the length h of the guide 58 is shorter than that described above.

[0021]

According to the present invention, the tape cassette is surely supported by the guide without rattling and the blocking plate is retracted by the guide or the projection of the guide, so that the tape interferes with the tape. There is nothing to do. Therefore, the tape is not damaged as in the conventional case.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment with a lid opened.

FIG. 2 is an explanatory view of loading a tape cassette of the same embodiment.

FIG. 3 is a perspective view of a main part of another embodiment.

FIG. 4 is a perspective view of a main part of another embodiment.

FIG. 5 is a perspective view of a main part of another embodiment.

FIG. 6 is a side view of a main part of another embodiment.

FIG. 7 is a perspective view of a tape cassette.

FIG. 8 is an exploded perspective view of the tape cassette.

9 is a sectional view taken along line XX of FIG.

10 is a sectional view taken along line YY of FIG.

FIG. 11 is an enlarged view of the main part of the tape cassette.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic tape 1a, 1b Reel hub 10 Case 11 Base part 11a Front surface part 11b Rear surface part 12a Front plate 12b Back plate 13a, 13b Integrated molded product 14, 15 Hub winding part 16 Opening 17 Travel path 18 Closure plate 18c Protrusion 20 Plate Spring 21 Tape guide 50 Reproduction machine main body 51 Lid 52 Reel boss 55 Operation switch 56 Magnetic head 57 Pinch roller 58 Guide 58a Groove 59 Protrusion

Claims (2)

[Claims] 1. A case 10 for accommodating therein a roll-shaped magnetic tape 1 wound between a pair of reel hubs 1a, 1b.
Is composed of a base portion 11 that forms the inside thereof, and front and back plates 12a and 12b that cover the front and back surfaces of the base portion 11, and the base portion 11 includes the winding portions 14 of the reel hubs. 1
5, a traveling path 17 is formed from both ends of the front surface of the case to the front opening 16 into which the magnetic head 56 and the like are inserted. The base portion 11, the front plate 12a, and the back plate 12b correspond to the opening 16. The magnetic tape guide 21 is provided on the front surface of the base portion 11 with the magnetic tape 1 interposed therebetween, and the obstruction plate 18 covering the opening is directed to the rear surface on the front and back surfaces of the case 10. And movably attached,
Further, in a cassette tape reproducing machine for reproducing by loading a tape cassette provided with a spring 20 for urging the closing plate 18 in the opening closing direction between the closing plate 18 and the case 10, the casing 50, 51 Guides 58, 58 in the insertion direction of the tape cassette A are provided on both sides of the magnetic head 56 of the tape cassette A loading section S, separated by the lateral width of the tape cassette A, and a guide groove 58a of the guide 58 is provided.
Has a cross-sectional shape such that the end portion on the front surface side of the case 10 fits snugly, and the length h of the guide 58 is set by inserting the tape cassette A into the casing 50.
A cassette tape reproducing apparatus is characterized in that the closing plate 18 is set in contact with the front edge of the closing plate 18 or the projection 18c thereof to retract the closing plate 18 to open the opening 16. 2. The cassette tape reproducing apparatus according to claim 1, wherein the guide groove 58a of the guide 58 is provided in the case 1
0 has a cross-sectional shape in which the front end portion fits snugly, and a protrusion 59 is provided in the guide groove 58a that abuts the front edge of the closing plate 18 or the protrusion 18c without hindering insertion of the front end portion of the case 10. When the tape cassette A is inserted and set in the casings 50 and 51, the position of the protrusion 59 causes the protrusion 59 to move the closing plate 18 to its front edge or its protrusion 1.
A cassette tape player, which is set so as to open the above-mentioned opening 16 by abutting against 8c and retracting.