JP2003263877A - Cassette adapter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cassette adapter capable of surely preventing the idling state of reels. <P>SOLUTION: The cassette adapter is provided with an endless pseudo tape which is set around the reels under prescribed tension through the opening of a housing to be inserted with a capstan and a pinch roller and is driven at a substantially specified speed by the capstan and the pinch roller. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette for inputting a signal from a recording medium other than a compact cassette tape (hereinafter abbreviated as a cassette tape) used in a cassette tape reproducing apparatus for vehicles, etc. from an external device. It is about adapters.

[0002]

2. Description of the Related Art Among car-mounted audio devices, a cassette tape reproducing device is installed in many cars as a most popular audio device together with a radio tuner. With the spread of compact discs (CDs) in recent years, the demand for compact disc playback devices has expanded as high-end audio equipment for vehicles. However, it was difficult to add a compact disc playback device because it was not included in the standard equipment of new cars. Moreover, the compact disc reproducing device is more expensive than the cassette tape reproducing device. This has hindered its widespread use of compact disc reproducing devices for vehicles.

For this reason, when listening to music or the like from a compact disc in a vehicle not equipped with the compact disc reproducing device, a portable compact disc reproducing device is brought into the vehicle, and the compact disc reproducing device is mounted in an on-vehicle audio device. I was playing a compact disc by connecting to a cassette tape player. In general,
Since the in-vehicle audio equipment is not provided with an additional input terminal or the like, a signal output method using a cassette adapter is adopted as a means for outputting a signal from the compact disc reproducing device to the in-vehicle audio equipment. In the signal output method using this cassette adapter, the output signal from the compact disc reproducing device is input to the cassette adapter which is a cassette type output unit. Then, this cassette adapter is inserted into the cassette tape insertion opening of the cassette tape reproducing device which is an on-vehicle audio device. As a result, the output signal of the portable compact disc reproducing device is input to the on-vehicle audio equipment via the cassette adapter.

As a conventional technique as described above, there is a method disclosed in Japanese Patent Publication No. 4-56391. FIG. 14 is a plan view showing a conventional cassette adapter disclosed in Japanese Patent Publication No. 4-56391. The housing 112 of the cassette adapter 110 shown in FIG.
Has the same shape as the cassette tape housing (cassette case). This cassette housing 1
A two-channel magnetic head 140 is provided in the opening 126 on the front surface (the lower surface in FIG. 14) of 12.
From the cutout 146 of the housing 112, the two-core conductor 1
42 is pulled out. One end of the lead wire 142 is connected to the audio circuit in the housing 112,
A plug 144 is provided at the other end of 2. The plug 144 is configured to be connected to a headphone jack of a compact disc reproducing device (not shown).
FIG. 15 is an electric circuit diagram showing an audio circuit provided in the housing 112.

When listening to music or the like on a compact disc in the vehicle using the conventional cassette adapter 110 configured as described above, the plug 144 at the other end of the lead wire 142 is connected to the headphone jack of the compact disc reproducing device. . Next, the cassette adapter 110 is inserted into the cassette tape insertion opening of the cassette tape reproducing device mounted on the vehicle. The magnetic head 140 of the cassette adapter 110 mounted in the cassette insertion slot faces the reproducing head of the cassette tape reproducing device. When the compact disc reproducing device is set to the reproducing state in such a state, the output signal of the compact disc reproducing device is input to the audio circuit shown in FIG.
Sent to 40. Since the magnetic head 140 faces the reproducing head of the cassette tape reproducing apparatus, the signal input to the magnetic head 140 leaks and is transmitted to the reproducing head of the cassette tape reproducing apparatus.

[0006]

[Patent Document 1] Japanese Patent Publication No. 4-56391

[0007]

When reproducing a compact disc using the conventional cassette adapter having the above-described structure, the magnetic head of the cassette adapter for outputting a signal and the reproduction of the cassette tape reproducing apparatus for receiving the signal. Signals are transmitted most efficiently when the head gaps between the heads are closest to each other. However, if the centers of both heads are offset in the tape running direction, the efficiency of signal transmission is greatly reduced. Also, if the heights of both head cores that determine the widthwise position of the tape running track do not match, not only the efficiency of signal transmission decreases, but also the magnetic head on the transmission side of the left channel, There was a problem that the playback sound from the left channel crosstalked to the right channel when approaching the playback head.

A general cassette tape reproducing apparatus including an on-vehicle cassette tape reproducing apparatus is provided with a rotation detector for detecting the rotation operation of the reel and a tape detector for detecting the presence of the tape. These rotation detectors and tape detectors continue to operate even when the magnetic tape of the mounted cassette tape is cut, or the tape is wrapped around the rotating body such as the capstan due to abnormal tape running and the cassette tape cannot be taken out. It is provided to prevent such accidents. A cassette tape reproducing device having such a detector automatically determines that the tape is broken when the reel rotation operation is stopped or when the tape is no longer in a predetermined position, and automatically stops the device. Or, the cassette tape is automatically ejected. In the conventional cassette adapter, in order to prevent such an automatic stop or automatic ejection state, the tape reel is configured to be constantly rotated, or the tape reel is braked to indicate that the tape reel is not in the idling state. Various attempts have been made.

An auto-reverse mechanism is often used in a general cassette tape reproducing apparatus including a vehicle-mounted cassette tape reproducing apparatus. This auto reverse mechanism
When the tape reaches the end while one track is being played and the tape cannot run in the same direction, the tape running direction is reversed to continue playing the other track. In a cassette tape reproducing apparatus having such an auto-reverse mechanism, for example, a 4-track head is used as a reproducing head, and the lower two tracks are used when going forward and the upper two tracks are used when returning. There was something I did. Further, for example, there is a cassette tape reproducing apparatus in which a two-track head is used as a reproducing head, and when the end of the tape is detected, the head makes a half rotation to move the head core to the track position at the time of reversal. In order to make the cassette adapter compatible with the cassette tape reproducing apparatus having such an auto-reverse mechanism, it is necessary to use a 4-track head as the magnetic head of the cassette adapter or a mechanism for reversing the 2-track magnetic head. there were. However, when a 4-track head is used as the magnetic head of the cassette adapter, there is a problem that the cassette adapter becomes expensive. Further, it is virtually impossible to provide a mechanism for reversing the head in the cassette adapter.

Therefore, most conventional cassette adapters use a magnetic head having a two-track head core. Therefore, when the cassette adapter is inserted into the conventional cassette tape reproducing device, the track position of the reproducing head differs from the track position of the magnetic head for signal output of the cassette adapter depending on the tape running direction or the mounting direction of the cassette adapter at that time. There is a case. In this case, since the signal cannot be transmitted from the signal output magnetic head of the cassette adapter to the reproducing head of the cassette tape reproducing device, music or the like was not output from the speaker connected to the cassette tape reproducing device. In such a case, since the cassette player does not hear the voice or the like from the speaker in spite of the reproduction state, it may be determined that the cassette adapter is out of order.

An object of the present invention is to provide a cassette adapter which has means for preventing the reel from idling in the cassette adapter and for reliably rotating the reel.
Another object of the present invention is to reverse the tape running direction in a cassette tape reproducing apparatus having an auto-reverse mechanism when the track position of the magnetic head of the cassette adapter is different from the track position of the reproducing head of the cassette tape reproducing apparatus. Another object of the present invention is to provide a cassette adapter that can match the track position of the magnetic head of the cassette adapter with the track position of the reproducing head.

[0012]

In order to achieve the above-mentioned object, the cassette adapter of the present invention has a shape that can be mounted interchangeably with a cassette tape reproduced in a cassette tape reproducing apparatus. A housing in which openings for inserting a capstan and a pinch roller of the reproducing device are formed on the left and right, respectively, and a housing built in the housing and arranged to face a reproducing head for reproducing a cassette tape of the cassette tape reproducing device. A magnetic head for signal output for performing signal transmission to the reproducing head, two left and right reels having a reel hub driven by a reel driving mechanism of the cassette tape reproducing device,
Substantially by being wound around the two left and right reels with a predetermined tension through an opening of the housing into which the capstan and the pinch roller are inserted, and being pinched and driven by the capstan and the pinch roller. And an endless pseudo tape driven at a constant speed. In the cassette adapter of the present invention configured as described above, the endless pseudo tape is driven at a substantially constant speed by the capstan and the pinch roller of the cassette reproducing apparatus, and the reel around which the pseudo tape is wound rotates without slipping. To do. Therefore, the cassette tape reproducing device equipped with the cassette adapter of the present invention does not erroneously determine that the tape has run out, and does not perform the erroneous operation of automatically stopping or ejecting the cassette adapter.

A cassette adapter according to another aspect of the present invention is
A dummy tape piece for accommodating the magnetic head so as to maintain a predetermined positional relationship with the housing and engaging with a tape guide of the cassette tape reproducing device to guide the magnetic head to a position facing the reproducing head. And a head cover having. When the cassette adapter of the present invention thus constructed is mounted in the cassette tape reproducing device, the dummy tape piece of the cassette adapter is inserted and guided in the tape guide of the cassette tape reproducing device. Therefore, the magnetic head for signal output is arranged at an accurate position in the tape width direction with respect to the reproducing head of the cassette tape reproducing apparatus.

A cassette adapter according to another aspect of the present invention is
The openings formed in two places for inserting the capstan and the pinch roller of the cassette tape reproducing device into the housing are configured such that the pseudo tape is sandwiched and driven in any of these openings.
In the thus constructed cassette adapter of the present invention, the pseudo tape is driven at a substantially constant speed by the capstan and the pinch roller of the cassette reproducing apparatus.

A cassette adapter according to another aspect of the present invention is
A member having a high friction coefficient is provided on an outer peripheral portion of the reel which is in contact with the pseudo tape, and the pseudo tape is configured to be driven without sliding. A cassette adapter according to another aspect of the present invention provides protrusions at equal intervals on an outer peripheral portion of the reel that contacts the pseudo tape, forms perforations on the pseudo tape at positions corresponding to the protrusions, and the protrusions and the perforations are formed. The reel is driven by engaging and moving the pseudo tape.

A cassette adapter according to another aspect of the present invention is
The pseudo tape has a tension applying means which is wound around the pseudo tape, and the pseudo tape is always wound around the two reels at a substantially constant tension. The cassette adapter of the present invention thus constructed rotates the reel without the pseudo tape sliding. A cassette adapter according to another aspect of the present invention includes an intermediate reel having a gear that meshes with gears formed on the outer circumferences of the two reels and that interlocks the reels. In the cassette adapter of the present invention configured as described above, the two reels are interlocked with each other and do not idle.

A cassette adapter according to another aspect of the present invention is
The pseudo tape is wound around the two reels and the intermediate reel, and the gear ratios of the reel and the intermediate reel are set so that the peripheral speeds of the tape contact surfaces of the reel and the intermediate reel match. . In the cassette adapter of the present invention configured as described above, the reel around which the pseudo tape is wound and the intermediate reel rotate without sliding.

While the novel features of the invention are nothing other than those particularly pointed out in the appended claims, the invention, together with other objects and features, is to be understood in conjunction with the drawings, both as to structure and content. It will be better understood and appreciated from the following detailed description of.

DETAILED DESCRIPTION OF THE INVENTION A preferred embodiment of the cassette adapter of the present invention will be described below with reference to the accompanying drawings. << First Embodiment >> FIG. 1 is a plan view showing the internal structure of a rear case of the cassette adapter according to the first embodiment of the present invention, with the front case removed. FIG. 2 is a perspective view showing the internal structure of the back case of the cassette adapter of the first embodiment as in FIG. FIG. 3 is an exploded perspective view of the cassette adapter of the first embodiment.

[Structure of Cassette Adapter] The housing 120 of the cassette adapter 1 of the first embodiment is formed by joining the back case 2 and the front case 4. The back side case 2 and the front side case 4 have two holes 6 and 8 for the left and right reel shafts and holes 10 and 1 for inserting the capstan.
2 and the like, and has the same shape as a general cassette tape. As shown in FIG. 1, three pins 14 are erected on the joined back case 2 and front case 4, and the three tape rollers 16 a, 16 are attached by the pins 14.
b and 16d are pivotally supported. Further, two pins 18 are erected on both sides of the magnetic head 58.
The tape rollers 20a and 20b are axially supported by.

As shown in FIGS. 2 and 3, the housing 1
Two hollow reels 24, 2 provided on the left and right in the 20
6, a non-slip reel rubber 22 made of chloroprene rubber, silicone rubber, or the like is attached to the outer periphery of the rubber 6. Inside each of the reels 24 and 26, three protrusions 24a and 26a (see FIG. 3) projecting parallel to the reel rotation axis are formed, and these protrusions 24a and 26a are provided inside the reels 24 and 26, respectively. Reel hub 2 to be installed
It is configured to engage with 8, 30. Reel 24,
There is some clearance between the outer peripheral surfaces of the reel hubs 28 and 30 mounted inside 26 and the inner surfaces of the reels 24 and 26, and they are inserted into the outer peripheral surfaces of the reel hubs 28 and 30, respectively. Three notches 28a and 30a are formed at positions corresponding to the protrusions 24a and 26a.

Spaces 24b and 26b inside the reels 24 and 26 are arranged so that the driving force from a reel shaft (not shown) of the cassette tape reproducing apparatus to which the cassette adapter 1 is mounted is smoothly transmitted to the reels 24 and 26. Six protrusions 28b and 30b are formed on the inner peripheral surfaces of the reel hubs 28 and 30 mounted therein, respectively. Protrusions 28b, 3 formed on the inner peripheral surfaces of the reel hubs 28, 30
0b has some play in the rotation axis direction and the radial direction of the reels 24 and 26, and is formed so that the driving force from the reel shaft of the cassette tape reproducing device is smoothly transmitted to the reels 24 and 26. ing.

The reels 24 and 26, on which the reel hubs 28 and 30 are mounted, have outer peripheral surfaces of ribs 34 and 36 formed around the holes 6 and 8 of the rear case 2 and inner peripheral surfaces 24c and 26c of the reels 24 and 26. And are engaged and rotatably supported. As shown in FIG. 3, the tension lever 38 provided on the outer periphery of the right reel 26 is rotatably supported by three ribs 40 formed on the back case 2. Further, the tension lever 38 is used for the left reel 24.
A roller 42c at the left end of the tension lever 38 is pivotally supported by a pin 42 that is erected between the right reel 26 and the right reel 26. A tension spring 44 is provided on the right side of the tension lever 38, and the tension spring 44 urges the tension lever 38 to rotate clockwise.

The housing 120 configured as described above
Endless pseudo tape is inside reels 24, 2
6, and is wound around rollers 16a, 16b, 16c, 20a. The pseudo tape 46 is an endless tape made of a material such as polyethylene terephthalate having a thickness of 40 to 80 μm and has the same width as a cassette tape which is normally used. As shown in FIG. 2, after the pseudo tape 46 is wound around the outer periphery of the left reel 24 in the counterclockwise direction, it is wound around the roller 16a in the clockwise direction, wound around the rollers 16b and 20a in the counterclockwise direction, and wound around the roller 16c in the clockwise direction. Wrap around, rollers 20b, 16
It is wound around the outer periphery of the d and the right reel 26 in the counterclockwise direction, and is wound so as to return to the outer periphery of the left reel 24.

The roller 16 at the left end of the tension lever 38
Since c is pushed upward (in the X2 direction in FIG. 1) by the urging force of the tension spring 44, a constant tension is applied to the pseudo tape 46 wound around the roller 16c. As shown in FIG. 1, the pseudo tape 46 is arranged so as to pass through the capstan insertion holes 10 and 12 and the pinch roller insertion openings 64b and 64c, like the magnetic tape of a general cassette tape. . Therefore, the pseudo tape 46 is the cassette adapter 1
1 is sandwiched between a capstan and a pinch roller of a cassette tape reproducing apparatus to be mounted, and is driven to the right in FIG. 1 at an almost constant speed by driving the capstan. Details of the operation when the cassette adapter 1 is attached to the cassette tape reproducing apparatus will be described later.

FIG. 4 shows the cassette adapter 1 of the first embodiment.
6 is a perspective view showing the configuration of a head cover 54 that holds the magnetic head 58 in FIG. The head cover 54 is arranged on the front side (lower side in FIG. 1) of the back case 2,
Dummy tape pieces 50 and 52 having a certain length are integrally formed on both ends of the head cover 54. A magnetic head 58 is fixed inside the head cover 54 via a pedestal 56 (FIG. 5). The fixed position of the magnetic head 58 is located on the extension of the dummy tape pieces 50 and 52 formed at both ends of the head cover 54.
Eight head cores 58a and 58b are arranged. In other words, the dummy tape pieces 50 and 52 and the magnetic head 58.
Is substantially the same as the positional relationship between the magnetic tape and the magnetic head in a general cassette tape.

Dummy tape piece 5 in the first embodiment
The shapes of 0 and 52 are set such that the width thereof is within the allowable dimension in the standard of the magnetic tape of the general cassette tape used in the cassette tape reproducing apparatus. Therefore, when the cassette adapter 1 is attached to the cassette tape reproducing device, the dummy tape pieces 50 and 52 are formed within the standard of the magnetic tape, and thus are securely held by the tape guide of the reproducing head. Further, since the taper portions 50a and 52a are formed on the upper and lower end surfaces of the dummy tape pieces 50 and 52, respectively, the dummy tape pieces 50 and 52 have a shape that can be easily inserted into the tape guide of the cassette tape reproducing apparatus. . As shown in FIG. 4, two concave head guides 66, 68 are formed on the front surface of the head cover 54, and the surface of each head guide 66, 68 facing the reproducing head is formed with an appropriate radius of curvature. Has been done. An opening is provided between the two head guides 66, 68, and the head cores 58a, 5 at the center of the front surface of the magnetic head 58 are provided in this opening.
8b is arranged. The magnetic head 58 is arranged such that the positions of the head cores 58a and 58b are on the extensions of the dummy tape pieces 50 and 52.

The radius of curvature of the curved surface formed on the surface of the head guides 66, 68 facing the reproducing head is set to be slightly larger than the radius of curvature of the front surface of the reproducing head of the cassette tape reproducing apparatus into which the cassette adapter 1 is inserted. ing. The head guides 66 and 68 guide the center line of the magnetic head 58 and the center line of the companion reproducing head when the curved surfaces contact the reproducing head.
In this way, the head guides 66, 68 are used for the magnetic head 5
It is provided in order to minimize the head gap between both the recording medium 8 and the reproducing head. The radius of curvature of the reproducing head of the cassette tape reproducing apparatus is appropriately set and differs depending on the model and the product, so that the head guides 66, 68 of the first embodiment can be adapted to have the expected maximum radius of curvature.
The radius of curvature of the curved surface formed on the front surface of the is set.
With this configuration, the magnetic head 58 of the cassette adapter 1 surely faces the reproducing head, and has a predetermined head gap or less. The magnetic head 58 of the first embodiment has the same track configuration as the reproducing head of the cassette tape reproducing device to which the cassette adapter 1 is attached.

Here, the magnetic head 58 is attached to the head cover 5
A method of fixing the No. 4 will be described. FIG. 5 is an exploded perspective view showing the magnetic head 58 and the head cover 54 in the cassette adapter 1 of the first embodiment. In FIG.
When the magnetic head 58 is housed in a metallic shield case, it is first attached to a predetermined position of the metallic pedestal 56 by spot welding. After the spot welding, the heights of the head cores 58a and 58b of the magnetic head 58 from the bottom surface of the shield case are measured, and when the magnetic head 58 is housed in the head cover 54, the head cores 58a and 58b.
The height of the pedestal 56 is adjusted by bending both ends of the pedestal 56 so that the position of “b” becomes the specified position. Next, the pedestal 56 is inserted into the head cover 54, and the holes 56a and 56b of the pedestal 56 are tapped into the head cover 54.
Push it into 4b and fix it. In this way, the pedestal 56
Is fixed at a predetermined position inside the head cover 54, and the magnetic head 58 is fixed inside the head cover 54. In this way, the position of the magnetic head 58 fixed in the head cover 54 is such that the head cores 58a and 58b are located on the tape with respect to the magnetic tape, assuming that the magnetic tape is present instead of the dummy tape pieces 50 and 52 of the head cover 54. It is set to a predetermined position in the width direction and the tape running direction, and the gap between the head cores 58a and 58b and the magnetic tape is set to a predetermined distance.

The fixing method of the magnetic head 58 is not limited to the above method, and for example, the taper pin 54 as described above.
Without forming a and 54b on the head cover 54, a bent leaf spring is arranged below the pedestal 56 to which the magnetic head 58 is fixed, screws are passed through the holes 56a and 56b of the pedestal 56, and the pedestal 56 is fastened to the bottom plate of the head cover 54. You may fix it. In this case, the height of the magnetic head 58 is changed according to the degree to which the screws are tightened to adjust the height of the head cores 58a and 58b of the magnetic head 58 with respect to the dummy tape pieces 50 and 52. After adjusting in this way, the screw is coated with a fixing agent for preventing loosening. As another fixing method, a spacer having a desired thickness is selected from spacers having different thicknesses, and the spacer is attached to the pedestal 5 to which the magnetic head 58 is fixed.
6 and the head cover 54, the magnetic head 58
Is fixed to the head cover 54.

As described above, when fixing the magnetic head 58 and the head cover 54 in the first embodiment, when the magnetic head 58 is attached to the head cover 54, the dummy tape pieces 50 and 52 are supposed to be magnetic tapes and are extended. It suffices that the head cores 58a and 58b be arranged at positions within the tape width of No. 3, and that the head gap between the magnetic head 58 and the reproducing head be within a predetermined relative distance defined in the standard.
A protective sheet 80 for protecting the head cores 58a and 58b is attached to the front surface of the magnetic head 58 of the first embodiment so as not to be scratched when it comes into contact with the reproducing head.

The head cover 54 formed as described above
Is held inside the housing 120 by the head spring 62 (FIG. 2) so as to be movable up, down, left and right to some extent. The rear case 2 has three pins 60a, 60
b and 60c are planted, and the hole 62a formed in the head spring 62 is penetrated and held by the pin 60a in the center. Also, the left and right pins 60
b and 60c support the left side surface and the right side surface of the head spring 62, and restrict the left and right movements of the head spring 62.

The head spring 62 has three spring pieces 6
2b, 62c and 62d are provided to hold the head cover 54. As shown in FIG. 2, two spring pieces 6 of the head spring 62 are provided on the back surface of the head cover 54.
The heads of the head cover 54
Is pressed to the front side (downward in FIG. 1). That is, the spring pieces 62b and 62c of the head spring 62 urge the head cover 54 in the direction of the opening 64a on the front surface of the housing 120 (the arrow X1 direction in FIG. 1). The protrusion of the head cover 54 thus urged is prevented by the projection 65 formed on the front surface side of the back case 2. Also, the spring piece 62d of the head spring 62
Touches the upper surface of the head cover 54 and urges the head cover 54 in the direction of arrow Z1 in FIG. 2 so as to press the head cover 54 toward the back case 2.

As described above, the head cover 54 having the magnetic head 58 is movably and elastically held by the three spring pieces 62b, 62c and 62d of the head spring 62. The head cover 54 incorporating the magnetic head 58 as described above is attached to the back case 2 together with other components, and the front case 4 is covered. The cassette adapter 1 of the first embodiment is assembled by holding the internal parts between the front case 4 and the back case 2 and fixing them with screws (not shown). In the cassette adapter 1 assembled in this way, the dummy tape pieces 50 and 52 of the head cover 54 are arranged at the positions where the magnetic tape should run in a normal cassette tape.

The cassette adapter 1 shown in FIGS. 1 and 2.
The internal electric circuit board 70 has an audio circuit for giving a signal input from an external device such as a compact disk reproducing device to the magnetic head 58. In addition, the electric circuit board 70 has a lead wire with a plug at its tip (not shown).
Are connected in the same manner as in the above-mentioned prior art. This lead wire is a lead wire outlet 2a on the left side of the back case 2 shown in FIG.
Alternatively, it can be led out from the lead wire outlet 2b on the right side. The two lead wire outlets 2a and 2b are prepared so as to cope with the case where the cassette tape insertion ports of the cassette tape reproducing device in which the cassette adapter 1 is mounted have different insertion directions. The plug provided at the tip of the lead wire is connected to a device for inputting a signal to the cassette adapter 1, for example, an output jack (for example, a headphone jack) of a compact disc reproducing device. The signal from the compact disk reproducing device is input to the audio circuit and output to the magnetic head 58 described above.

[Operation of Cassette Adapter] Next, the operation of the cassette adapter 1 of the first embodiment configured as described above will be described. The operation description below is the operation when the cassette adapter 1 of the first embodiment is mounted in the cassette tape reproducing apparatus having the reproducing head instead of the cassette tape. When the cassette adapter 1 of the first embodiment shown in FIG. 1 is mounted on the cassette tape reproducing apparatus, the housing 120 composed of the front case 2 and the rear case 4 is attached.
A reel shaft (not shown) of the cassette tape reproducing device is inserted into the reel shaft holes 6 and 8. The reel shaft engages with the six protrusions 28b and 30b formed on the inner peripheral surfaces of the reel hubs 28 and 30 to rotate and drive the reel hubs 28 and 30. At the same time as the above rotational driving operation, the housing 1
The capstan (not shown) of the cassette tape reproducing device inserted into the capstan insertion hole 12 of the housing 20 has a front opening 64c of the housing 120 via the pseudo tape 46.
It comes into contact with a pinch roller (not shown) inserted from.
The pseudo tape 46 is sandwiched between a capstan and a pinch roller of a cassette tape reproducing device, and is sent out to the right in FIG. 1 by the rotation of the capstan. This pseudo tape 4
By the movement of 6, the left and right two reels 24 and 26 in the housing 120 rotate. Pseudo tape 46 is reel 2
Since it is in contact with the anti-slip reel rubber 22 provided on the outer peripheral surfaces of the reels 4, 26, the left and right reels 24, 26
Rotates at about the same speed without sliding.

The three protrusions 24a and 26a formed on the inside of the reels 24 and 26 respectively correspond to the reel hubs 28 and 3 respectively.
Since it engages with the three notches 28a, 30a of 0, the reel hubs 28, 3 are rotated by the rotation of the reels 24, 26.
In 0, rotation torque is applied and the motor rotates. As described above, since the driving force of the pseudo tape 46 acts on the reel hubs 28 and 30, the reel shaft of the cassette tape reproducing device is prevented from idling at a high speed. Therefore, in the cassette tape reproducing apparatus having the sensor that detects whether the reel shaft rotates normally, the cassette tape drive mechanism does not automatically stop. In the cassette adapter 1 mounted in the cassette tape reproducing device as described above, the signal from the portable compact disc reproducing device is electrically transmitted through the plug and the conductor connected to the output terminal (headphone terminal) of the compact disc reproducing device. It is input to the audio circuit of the circuit board 70. The signal input to the audio circuit is converted into a desired signal and applied to the magnetic head 58.

The operation when the cassette tape reproducing apparatus is in the reproducing state with the cassette adapter 1 mounted in the cassette tape reproducing apparatus as described above will be described with reference to FIG. FIG. 6 is a diagram for explaining the coupling state of the magnetic head 58 and the reproducing head of the cassette tape reproducing apparatus. FIG. 6A is a side sectional view showing the reproducing head 90 of the cassette tape reproducing device inserted into the opening 64 a of the cassette adapter 1. As shown in FIG. 6 (a), when the cassette tape reproducing device is in the reproducing state, the reproducing head 90 has the opening 64 a of the cassette adapter 1.
In the direction of arrow X2 at. This forward movement is an operation for the reproducing head 90 of the cassette tape reproducing device to come into contact with the magnetic tape of the originally inserted cassette tape.

In the forward movement of the reproducing head 90,
Tapered portions 50a, 52a of dummy tape pieces 50, 52
Engages with the tape guide 92 of the cassette tape reproducing device, and the dummy tape pieces 50 and 52 are guided by the tape guide 92 to desired positions. If the positions of the magnetic head 58 and the reproducing head 90 in the tape width direction (vertical direction) are different, the dummy tape pieces 50 and 52 move while being guided by the tape guide 92, and the magnetic head 58 and the reproducing head 90 move in the tape width direction. Are placed at the positions corresponding to each other. For example, if the tape guide 92 is located slightly above the dummy tape pieces 50 and 52 (Z2 direction in FIG. 6A), the tape guide 92 will be placed on the dummy tape pieces 5.
Abutting the lower taper portions 50a and 52a of 0 and 52,
The dummy tape pieces 50 and 52 move upward. With the upward movement of the dummy tape pieces 50 and 52, the magnetic head 58 moves upward (Z2 direction in FIG. 6A). Therefore, the head core 58a of the magnetic head 58,
The position of 58b is a position facing the position of the head core of the reproducing head 90.

When the head cover 54 having the magnetic head 58 moves to a desired position as described above, the upper surface of the head cover 54 is biased by the spring piece 62d of the head spring 62 in the direction of arrow Z1 so as to be pressed against the back case 2. (See FIG. 2). In the movement operation of the head cover 54, when the width dimension of the dummy tape pieces 50, 52 is narrower than the width dimension of the tape guide 92, the head cover 54 is constantly pressed by the spring piece 62d of the head spring 62 toward the reference surface side of the tape guide 92. Therefore, the magnetic head 58 is held at an accurate head position with respect to the reproducing head 90.

FIG. 6B is a plan view showing a case where the centers of the reproducing head 90 and the magnetic head 58 are displaced from each other in the tape running direction. As shown in FIG. 6B, when the center of the reproducing head 90 is deviated from the center of the magnetic head 58, the reproducing head 90 moves forward in the direction of the arrow X2 so that the reproducing head 90 moves to the front surface of the head cover 54. It abuts on one of the formed head guides 66. When the reproducing head 90 comes into contact with the head guide 66, the head cover 54 receives a force with respect to the reproducing head 90 in the direction along the radius of curvature of the front surface of the head guide 66 (the direction of arrow A in FIG. 6B). Therefore, as shown in FIG. 6C, the head cover 54 holding the magnetic head 58 moves to a position where the central axes of the magnetic head 58 and the reproducing head 90 coincide with each other in the tape running direction.
FIG. 6C is a plan view showing a case where the centers of the reproducing head 90 and the magnetic head 58 are aligned in the tape running direction.

As described above, when the cassette adapter 1 of the first embodiment is mounted on the cassette tape reproducing apparatus, the signal to be transmitted from the magnetic head 58 of the cassette adapter 1 is reproduced by the magnetic field of the reproducing head 90 of the cassette tape reproducing apparatus.
, The dummy tape pieces 50 and 52 provided on the front surface of the head cover 54 holding the magnetic head 58 are inserted into the tape guide 92 of the reproducing head 90, and the magnetic head 58 is aligned with the reproducing head 90. Be seen. In this way, the head cover 54 guides the magnetic head 58 to the correct position in the tape width direction with respect to the reproducing head 90 by the engagement between the dummy tape pieces 50 and 52 and the tape guide 92. Further, the contact between the head guides 66 and 68 and the reproducing head 90 guides the head cover 54 to the correct position in the tape running direction. As a result, the magnetic head 58 and the reproducing head 90 have the shortest distance between both head cores, and can be arranged without displacement in both the tape width direction and the tape running direction.

In the first embodiment, since the head cover 54 having the magnetic head 58 is movably held by the head spring 62, the cassette adapter 1
Reproducing head 90 of cassette tape reproducing device inserted in
The position adjustment with respect to is easy. Further, since the head cover 54 having the magnetic head 58 in the first embodiment is biased by the spring piece 62d of the head spring 62 in the direction of being pressed against the back case 2, the tape guide 92 of the reproducing head 90 and the dummy tape piece. The magnetic head 58 and the reproducing head 90 can be accurately aligned by forming a gap between the magnetic head 58 and the reproducing head 90. This is because when the magnetic tape is inserted into the cassette tape reproducing device, the magnetic head 58 is based on the lower end of the magnetic tape.
This is used because the alignment of is performed.

<< Second Embodiment >> Next, a second embodiment of the cassette adapter of the present invention will be described with reference to the accompanying drawings. FIG. 7 is a perspective view showing the configuration of the head cover in the cassette adapter of the second embodiment of the present invention, FIG. 7 (a) is a perspective view showing a state before assembly, and FIG. 7 (b) is It is a disassembled perspective view after an assembly. The cassette adapter of the second embodiment has substantially the same configuration as the cassette adapter of the first embodiment except for the head cover 72 described later, and those having the same functions and configurations are designated by the same reference numerals. Attach. Hereinafter, parts different from the first embodiment will be described. As shown in FIG. 7A, a space 74 for accommodating the magnetic head 58 is formed in the central portion of the head cover 72. The space 74 is formed to be slightly larger at least in the vertical and horizontal directions of the magnetic head 58.

In the head cover 72 of the cassette adapter of the second embodiment, dummy tape pieces 76 and 78 are formed at both front ends as in the first embodiment.
The taper portion 7 is formed on the upper and lower end surfaces of the dummy tape pieces 76 and 78.
6a and 78a are formed so that they can be easily inserted into the tape guide of the cassette tape reproducing device. Inside the dummy tape pieces 76 and 78, ribs 80 and 82 are formed so as to project in opposite directions. The ribs 80, 82 position the magnetic head 58 inserted from the back surface of the head cover 72. A head spring guide 84 for guiding the spring piece 62d (see FIG. 2) of the head spring 62 is provided on the upper surface side of the head cover 72 of the second embodiment. In the cassette adapter of the second embodiment, the components other than the head cover 72 are the same as the components of the cassette adapter of the first embodiment described above, so the description thereof will be omitted.

Next, a method of assembling the head cover 72 in the second embodiment having the above structure will be described. The magnetic head 58 is inserted from the rear side into the space 74 of the head cover 72 shown in FIG. 7A, and the magnetic head 58 is brought into contact with the inner surfaces of the ribs 80 and 82 to determine the position of the magnetic head 58 in the front-rear direction. . Next, the dummy tape pieces 76, 7
The position of the magnetic head 58 with respect to 8 is determined. At this time,
The head cores 58a and 28b of the magnetic head 58 are accurately positioned on the extension of the dummy tape pieces 76 and 78 so as to face each other with a predetermined distance. After positioning the magnetic head 58, an adhesive is put in the gap between the magnetic head 58 arranged in the cavity 74 and the wall surface of the cavity 74 to form the magnetic head 5.
Fix 8 The magnetic head 58 and the head cover 72
In fixing with, it is possible to use a known fixing technique, for example, first of all, partially fixing each other with an instant adhesive, and then pouring a two-component adhesive into the remaining gap and fixing it over time. it can. The head cover 72 thus assembled can be used in place of the head cover 54 of the first embodiment described above, and is mounted so that the head spring guide 84 is on the upper side.

FIG. 8 shows a head cover 72 of the second embodiment.
It is a top view which shows the state which attached to the cassette adapter. In FIG. 8, the spring piece 62d of the head spring 62 is inserted into the groove of the head spring guide 84, and the head cover 72 is biased by the spring piece 62d in the direction in which it is pressed against the back case 2. Further, as in the case of the first embodiment described above, when the reproducing head 90 of the cassette tape reproducing apparatus in which the cassette adapter is mounted enters the cassette adapter in the reproducing state,
The tape guide 92 integrally formed with the support member 91 of the reproducing head 90 and the dummy tape pieces 76 and 78 are engaged,
The head cover 72 is guided to a desired position.

In the cassette adapter of the second embodiment having the above-mentioned structure, the operation when the cassette adapter is mounted in the cassette tape reproducing apparatus is the same as that of the first embodiment. Therefore, the same operation as that in which the dummy tape pieces 76 and 78 of the second embodiment are provided in place of the dummy tape pieces 50 and 52 in FIG. 6B for explaining the first embodiment is performed. As a result, the magnetic head 58 is arranged with respect to the reproducing head 90 in the tape running direction as shown in FIG. When the reproducing head 90 comes into contact with either of the front surfaces of the left and right ribs 80 and 82, the head center lines of both the magnetic head 58 and the reproducing head 90 are moved, as in the case shown in FIG. The head cover 72 moves so that the positions match.

In the cassette adapter of the second embodiment, the spring piece 64d of the head spring 62 engaged with the head spring guide 84 is formed to have a narrow width so as to bend in the left and right directions. Therefore, the head cover 72
It is possible to follow the leftward and rightward movement of the spring member by the bending of the spring piece 64d. Further, as shown in FIG. 8, the head cover 72 includes spring pieces 62 b, 6 of the head spring 62.
2c shows the front-back direction of the housing (arrow X in FIG. 8).
1 and the direction of the arrow X2) are elastically held so as to be slidable. Therefore, the head cover 72 moves due to the contact with the approaching reproducing head 90, and the magnetic head 5 moves.
8 is arranged at a desired position with respect to the reproducing head 90.
As described above, according to the second embodiment, the head cover 7
Positioning of the magnetic head 58 with respect to the second magnetic head can be easily performed by the ribs 80 and 82, and a cassette adapter can be obtained in which the position of the magnetic head 58 with respect to the reproducing head 90 is automatically adjusted during the reproducing operation. .

<< Third Embodiment >> Next, a third embodiment of the cassette adapter of the present invention will be described with reference to the accompanying drawings. The components having substantially the same functions and configurations as those of the cassette adapters of the first and second embodiments described above are designated by the same reference numerals, and the description thereof will be omitted. FIG. 9 shows the reel 24 in the cassette adapter of the third embodiment,
It is a top view which shows the drive mechanism of 26. Although the components other than the drive mechanism are omitted in FIG. 9, these components have substantially the same configuration as the cassette adapter of the first and second embodiments described above. As shown in FIG. 9, the cassette adapter according to the third embodiment includes reels 24 and 26.
Gears 24d and 26d are formed on the. An intermediate reel 25 having a gear 25a that meshes with these two gears 24d and 26d is provided between the two reels 24 and 26.

The endless pseudo tape 46 is wound around the left and right reels 24, 26 and the intermediate reel 25. As shown in FIG. 9, the pseudo tape 46 is wound around the outer circumference of the left reel 24 in the counterclockwise direction, then around the outer circumference of the intermediate reel 25 in the clockwise direction, and the rollers 20b,
The outer circumference of 16d is wound counterclockwise. The pseudo tape 46 is composed of the roller 16d and the reel 2 on the right side.
6 is wound around the tension roller 116 in the clockwise direction, is wound around the outer circumference of the right reel 26 in the counterclockwise direction, and is returned to the left reel 24. The tension roller 116 between the roller 16d and the right reel 26 applies tension to the pseudo tape 46.

The roller 116 is rotatably supported by a pin 142 provided on the tension lever 138.
The tension lever 138 is the tension spring 144.
Is urged in the arrow Y direction in FIG. For this reason,
Tension is applied to the pseudo tape 46 by the biasing force of the tension spring 144. Therefore, in the third embodiment, there is no mechanism for applying tension to the pseudo tape 46 such as the roller 16d, the tension lever 38, and the tension spring 44 used in the first embodiment. Further, in the third embodiment, the rollers 16a,
16b and 20a are not provided.

Since the gear 25a of the intermediate reel 25 meshes with the gears 24d and 26d of the reels 24 and 26, the intermediate reel 25 is configured to rotate in synchronization with the reels 24 and 26. The gear ratios are set so that the peripheral speeds of the respective outer peripheral surfaces around which 46 is wound are matched. Therefore, the reels 24 and 26, around which the endless pseudo tape 46 is wound, rotate at the same peripheral speed as the cassette adapter of the first embodiment. Therefore, the pseudo tape 46 does not slide on the outer peripheral surface of each reel 24, 26, and the reels 24, 26 are surely rotated by the movement of the pseudo tape 46. Also in the third embodiment, as in the first embodiment, the reel rubber 2 for preventing slippage between the pseudo tape 46 and the reel is used.
2 (see FIG. 3) are provided.

FIG. 10 is a sectional view showing the vicinity of the intermediate reel 25 in the third embodiment. As shown in FIG.
The intermediate reel 25, which has a gear 25a that meshes with the gears 24d and 26d of the reels 24 and 26, is rotatably supported by a pin 23 formed on the back case 2. The intermediate reel 25 is formed with a hub portion 25b having a center hole into which the pin 23 is inserted and a side wall portion 25c surrounding the hub portion 25b. The intermediate reel 25 is provided with a stopper piece 27 for preventing reverse rotation. The stopper pieces 27 for preventing reverse rotation prevent reverse rotation of the left and right reels 24, 26, and are provided for rotating the reels 24, 26 only in the same direction. As shown in FIG. 9, a holding portion 27 a bent in a triangular shape is formed on one end side of the stopper piece 27 for preventing reverse rotation, and the holding portion 27 a is press-fitted into the hub portion 25 b of the intermediate reel 25. It is fitted. A tip contact portion 27b formed so as to ride over the side wall portion 25c of the intermediate reel 25 is formed on the other end side of the stopper piece 27 for preventing reverse rotation. The tip contact portion 27b is configured to move within a movable range between a position at which the gear 24d of the left reel 24 can be engaged and a position at which the stopper 29 can be contacted.

The reverse rotation preventing stopper piece 27 arranged as described above is attached to the hub portion 25b of the intermediate reel 25 so as to rotate with the rotation of the intermediate reel 25 in the movable range. However, the stopper piece 27
When a force equal to or greater than a predetermined rotation torque is applied to the stopper piece 27 in the direction opposite to the rotation direction of the intermediate reel 25, the holding portion 27a slides on the hub portion 25b of the intermediate reel 25. Sandwiches the hub portion 25b. Therefore, when the intermediate reel 25 rotates clockwise in FIG. 9, the tip end contact portion 27b of the stopper piece 27 abuts the stopper 29, and the holding portion 2 of the stopper piece 27.
7a slides on the hub portion 25b of the intermediate reel 25. On the contrary, when the intermediate reel 25 rotates counterclockwise in FIG. 9, the tip contact portion 27b of the stopper piece 27 engages with the gear 24d of the left reel 24, and the left reel 24 is prohibited from rotating. It

[Operation of stopper piece for preventing reverse rotation] The operation of the stopper piece 27 will be described in detail below. 11 and 12 are plan views showing the operations of the reels 24 and 26 and the intermediate reel 25 in the cassette adapter of the third embodiment configured as described above. 11 and 1
2, only the main components for explaining the operation of the reels 24, 26 and the intermediate reel 25 are shown.

The endless pseudo tape 46 shown in FIG.
Is traveling in the direction of arrow B. Therefore, the right reel 26 and the left reel 24 rotate counterclockwise, and the intermediate reel 25 rotates clockwise. At this time, the gears 24d and 26d of the reels 24 and 26 mesh with the gear 25a of the intermediate reel 25, and the reels 24 and 26 and the intermediate reel 25 are engaged.
Are rotating at the same peripheral speed. Thus, the intermediate reel 2
When 5 is rotating clockwise, the stopper piece 27 rotates clockwise due to the frictional force with the hub portion 25b of the intermediate reel 25. However, the tip abutting portion 27b of the stopper piece 27 abuts the stopper 29 which is one end of the movable range, and the clockwise rotation is stopped. Even after the rotation of the stopper 29 is stopped, the intermediate reel 2
Since No. 5 rotates with a driving force having a constant rotational torque, the intermediate reel 25 continues the rotating operation without generating noise. Therefore, slippage occurs between the hub portion 25b of the intermediate reel 25 and the holding portion 27a of the stopper piece 27, and the intermediate reel 25 continues to rotate in the clockwise direction as the pseudo tape 46 runs. This operating state is shown in FIG.

As described above, the holding portion 27a of the stopper piece 27 is press-fitted into the hub portion 25b of the intermediate reel 25, but the stopper piece 27 has a certain rotational torque or more.
, The holding portion 27a and the hub portion 25b are attached so as to slide due to the force. The constant rotation torque for driving the intermediate reel 25 means the pseudo tape 4
6 is generated by the driving force that is carried by being held by the capstan and the pinch roller of the cassette tape reproducing device, and the stopper piece 27 is in the middle when the tip contact portion 27b of the stopper piece 27 is in contact with the stopper 29. It refers to the rotational torque that can slide with the reel 25. The rotation torque of the intermediate reel 25 is the same as that of the pseudo tape 46 and the reel 2.
It is determined by the frictional force between 4, 26 and the intermediate reel 25, and it is sufficient if the stopper piece 27 and the intermediate reel 25 can rotate together in the movable range of the stopper piece 27.

The endless pseudo tape 46 shown in FIG.
Is traveling in the direction of arrow C. Therefore, the right reel 26 and the left reel 24 rotate clockwise, and the intermediate reel 25 rotates counterclockwise. At this time, the gears 24d and 26d of the reels 24 and 26 mesh with the gear 25a of the intermediate reel 25, and the reels 24 and 26 and the intermediate reel 2
5 is rotating at the same peripheral speed. Thus, when the intermediate reel 25 is rotating counterclockwise, the stopper piece 2
7 rotates counterclockwise due to the frictional force with the hub portion 25b of the intermediate reel 25. As a result, the front end contact portion 27b of the stopper piece 27 comes into contact with the gear 24d of the left reel 24 which is one end of the movable range. Since the gear 24d of the reel 24 rotates clockwise, the tip contact portion 27
The b and the gear 24d act in a biting direction. As a result,
The clockwise rotation of the left reel 24 is prohibited, and the counterclockwise rotation of the intermediate reel 25 is stopped. At the same time, the rotation of the right reel 26 is stopped via the gear 25a of the intermediate reel 25. This rotation stopped state is shown in FIG.

[Operation of Cassette Adapter] Next, the operation when the cassette adapter of the third embodiment configured as described above is mounted in the cassette tape reproducing apparatus having the automatic reverse mechanism will be described. In the following description, a case where a signal to be transmitted from the magnetic head 58 having two tracks is transmitted to the reproducing head of the cassette tape reproducing apparatus by a magnetic field will be described. First, a case where the reels 24 and 26 operate in the forward rotation direction (counterclockwise direction in FIG. 11) as shown in FIG. 11 will be described.
During the operation in the normal rotation direction, the position of the head core of the magnetic head 58 and the position of the head core having the reproducing function of the reproducing head are on the same track, that is, the same position. In this case, the pseudo tape 46 of the cassette adapter is in a state of traveling in the direction of arrow B in FIG. 11, the intermediate reel 25 rotates clockwise as described above, and the intermediate reel 25 continues according to the traveling of the pseudo tape 46. Then it is spinning. Also, 2
The two reels 24 and 26 are also interlocked and continuously rotating in the counterclockwise direction. Therefore, the magnetic head 5 for signal transmission
The signal to be transmitted from 8 can be continuously transmitted to the reproducing head of the cassette tape reproducing apparatus.

On the other hand, the reels 24 and 26 are rotated in the reverse direction (see FIG.
2 in the clockwise direction), the magnetic head 58
The position of the head core and the position of the head core having the reproducing function of the reproducing head are not on the same track. In this case, the pseudo tape 46 is in the state of traveling in the direction of arrow C in FIG. 12, and as described above, the intermediate reel 25 rotates counterclockwise and the stopper piece 27 and the gear 24d are engaged with each other.
The rotation of the reels 24 and 26 is prohibited. Therefore, the same judgment as when the auto-reverse mechanism of the cassette tape reproducing apparatus detects the tape end is performed, and the tape running is switched to the forward rotation direction. By this switching operation, the position of the head core of the magnetic head 58 and the position of the head core having the reproducing function of the reproducing head coincide with each other, and they are on the same track. As a result, the pseudo tape 46 is indicated by the arrow B in FIG.
Since the intermediate reel 25 runs in the direction, the pseudo tape 46
Continue to rotate clockwise according to the running of. Therefore, the signal is transmitted from the magnetic head 58 for signal transmission to the reproducing head of the cassette tape reproducing apparatus by the magnetic field.

On the other hand, when the cassette adapter of the third embodiment is mounted on the cassette tape reproducing device with the back side facing,
Similar to the operation shown in FIG. 12, the magnetic head 5
The auto-reverse mechanism operates so that the position of the head core 8 is aligned with the position of the head core of the reproducing head. Therefore, in the cassette adapter of the third embodiment, the problem of the conventional cassette adapter that the signal transmission cannot be performed and the reproduction cannot be performed when the cassette adapter is mounted on the back side can be avoided. As described above, the third
In a state where the cassette adapter of the example of FIG.
When the position of the head core of the reproducing head is a position where a signal cannot be transmitted from the magnetic head 58, rotation of the reel is prohibited and the tape running direction is reversed. When the magnetic head 58 for signal output is capable of transmitting a signal to the reproducing head of the cassette tape reproducing device in the state where the cassette adapter of the third embodiment is mounted in the cassette tape reproducing device,
The reel continues to rotate and reproduces the signal from the cassette adapter. For this reason, the cassette adapter of the third embodiment can be applied to a cassette tape reproducing device having an auto-reverse mechanism even if the magnetic heads of two tracks are used.

<< Fourth Embodiment >> Next, a fourth embodiment of the cassette adapter of the present invention will be described. First mentioned above
In the first embodiment or the second embodiment, the reels 24, 2
Although the reel rubber 22 (see FIG. 3) was provided on the contact surface of No. 6 with the pseudo tape, in the cassette adapter of the fourth embodiment, the endless pseudo tape is made of a material having a high friction coefficient without using the reel rubber. The friction coefficient between the reel and the pseudo tape is increased. Therefore, the reel reliably rotates without slipping due to the running operation of the pseudo tape. Hereinafter, a specific pseudo tape having a high friction coefficient will be described with reference to the attached FIG. It should be noted that components having substantially the same functions and configurations as those of the cassette adapters of the first, second, and third embodiments described above are designated by the same reference numerals, and the description thereof will be omitted. . FIG. 13 is the fourth
Right reel 26 in the cassette adapter of the embodiment
It is a perspective view showing a pseudo tape 47. Configurations other than the configuration shown in FIG. 13 are similar to those of the first embodiment and the second embodiment described above.
And the cassette adapter of the third embodiment.

As shown in FIG. 13, on the outer circumference of the reel 26, a plurality of substantially conical projections 26e are arranged at equal intervals. Although only the reel 26 on the right side is shown in FIG. 13, conical protrusions are similarly formed on the reel on the left side at equal intervals. The endless pseudo tape 47 wound around the outer periphery of the reel 26 has a large number of perforations 47a at intervals that match the distance between the centers of the protrusions 26e.
Are formed at equal intervals. Therefore, the perforation 47a of the endless pseudo tape 47 is
6, the reel 26 is securely rotated by the running operation of the pseudo tape 47. Since the cassette adapter of the fourth embodiment is constructed in this way,
In the cassette adapter of the fourth embodiment, the sliding state between the tape and the reel is surely prevented. In the fourth embodiment, the shape of the perforations 47a is such that the pseudo tape 47 is engaged with the protrusions 26e of the reels 24 and 26 even if the intervals between the plurality of protrusions 26e and the intervals between the plurality of perforations 47a are slightly different. Is preferably oval.

The reel 26 provided with the protrusion 26e and the pseudo tape 47 having the perforations 47a in the fourth embodiment are the cassette adapters of the first embodiment, the second embodiment, and the third embodiment described above. And can be operated in the same manner. The cassette adapter illustrated in each of the above-described embodiments is an example of the present invention, and the cassette adapter of the present invention can be modified in various ways. For example, the shape and quantity of parts are not limited to those illustrated. It is not limited. The cassette adapter of the present invention is the first
It is possible to appropriately combine and use the respective portions shown in the embodiments to the fourth embodiment.

In each of the above-described embodiments, the compact cassette tape and the device using the same have been described, but the present invention is not limited to the compact cassette tape, and is applicable to other cassette tapes and devices using the same. Further, the source of the signal input to the cassette adapter of the present invention is not limited to the compact disc reproducing device, but can be any device that can generate an audio signal. In the above-described embodiment, the reverse rotation preventing stopper means composed of the intermediate reel, the stopper piece, the stopper, etc. is used as the reel reverse rotation preventing means, but the reel supporting portion of the housing for rotatably supporting the reel is used. The same effect can be obtained even if a one-way clutch is provided. Although the invention has been described with a certain degree of detail in the preferred form, the present disclosure of the preferred form should be varied in details of construction, and combinations of elements and changes in the order of the invention are claimed. It can be realized without departing from the scope and concept.

[0067]

As described above, in the cassette adapter of the present invention, the endless pseudo tape is driven at a substantially constant speed by the capstan and the pinch roller of the cassette reproducing apparatus, and the reel around which the pseudo tape is slid is slid. Since the cassette tape reproducing apparatus equipped with the cassette adapter does not erroneously determine that the tape is cut, the cassette tape reproducing apparatus does not perform the erroneous operation of automatically stopping or automatically ejecting the cassette adapter.

Since the cassette adapter of the present invention is provided with the reverse rotation preventing means, when the cassette adapter is mounted in the cassette tape reproducing apparatus having the automatic reverse mechanism, the magnetic head for signal output reproduces the cassette tape. When the signal cannot be transmitted to the reproducing head of the device, the rotation of the reel is automatically prohibited and the tape running direction is reversed, and the magnetic head for signal output can be transmitted to the reproducing head of the cassette tape reproducing device. Can be placed in position. The cassette adapter of the present invention is
Since multiple projections are formed on the outer peripheral surface of the reel and multiple perforations are formed on the endless pseudo tape so as to engage with these projections, the reel is reliably rotated by the running operation of the pseudo tape, Sliding with the reel is reliably prevented.

[Brief description of drawings]

FIG. 1 is a plan view showing an internal configuration of a housing of a cassette adapter according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an internal configuration of a housing of the cassette adapter according to the first embodiment.

FIG. 3 is an exploded perspective view showing the configuration of the cassette adapter of the first embodiment.

FIG. 4 is a perspective view showing a head cover having a magnetic head in the cassette adapter of the first embodiment.

FIG. 5 is an exploded perspective view showing a head cover having a magnetic head in the cassette adapter of the first embodiment.

FIG. 6 is an explanatory diagram showing a combined state of a magnetic head in the cassette adapter of the first embodiment and a reproducing head of a cassette tape reproducing device.

FIG. 7 is a perspective view (a) showing a head cover having a magnetic head in a cassette adapter of a second embodiment of the present invention and an exploded perspective view (b) showing a head cover of the cassette adapter of the second embodiment. .

FIG. 8 is a plan view showing a combined state of a magnetic head in a cassette adapter of a second embodiment and a reproducing head of a cassette tape reproducing device.

FIG. 9 is a plan view showing a reel drive mechanism in the cassette adapter according to the third embodiment of the present invention.

FIG. 10 is a sectional view showing the vicinity of an intermediate reel in the third embodiment.

FIG. 11 is a plan view showing the operations of the reel and the intermediate reel in the forward rotation direction in the cassette adapter according to the third embodiment.

FIG. 12 is a plan view showing the operations of the reel and the intermediate reel in the reverse rotation direction in the cassette adapter of the third embodiment.

FIG. 13 is a perspective view showing a reel and a pseudo tape on the right side of the cassette adapter according to the fourth embodiment of the present invention.

FIG. 14 is a plan view showing a conventional cassette adapter.

FIG. 15 is an electric circuit diagram of a conventional cassette adapter.

[Explanation of symbols]

1 cassette adapter 2 back case 4 front case 24 reel 26 reels 38 Tension lever 44 Tension spring 46 pseudo tape 50 dummy tape pieces 52 Piece of dummy tape 54 head cover 58 magnetic head 62 head spring 66 Head guide 68 Head guide 120 housing

Claims (8)

[Claims] 1. A housing having a shape compatible with a cassette tape to be reproduced in a cassette tape reproducing apparatus, and having openings for inserting a capstan and a pinch roller of the cassette tape reproducing apparatus formed on the left and right sides, respectively. A magnetic head for outputting a signal, which is built in the housing and is arranged to face a reproducing head for reproducing the cassette tape of the cassette tape reproducing device and which transmits a signal to the reproducing head; The left and right two reels having a reel hub driven by the reel drive mechanism, the capstan and the pinch roller are passed through the inside of the opening of the housing, and the left and right two reels are wound around with a predetermined tension. Substantially by being driven by being sandwiched by a capstan and pinch roller A cassette adapter, comprising: an endless pseudo tape driven at a constant speed. 2. The magnetic head is housed so as to maintain a predetermined positional relationship with the housing, and is engaged with a tape guide of the cassette tape reproducing device so that the magnetic head faces the reproducing head. The head cover further comprises a dummy tape piece for guiding.
The listed cassette adapter. 3. An opening formed at each of two positions for inserting a capstan and a pinch roller of a cassette tape reproducing apparatus into the housing is driven by sandwiching the pseudo tape at any one of these openings. The cassette adapter according to claim 1, which is configured. 4. The cassette adapter according to claim 1, wherein a member having a high coefficient of friction is provided on an outer peripheral portion of the reel which is in contact with the pseudo tape. 5. The reels are provided with protrusions at equal intervals on an outer peripheral portion thereof in contact with the pseudo tape, perforations are formed on the pseudo tape at positions corresponding to the protrusions, and the protrusions and the perforations are engaged with each other. The cassette adapter according to claim 1. 6. The method according to claim 1, further comprising a tension applying means around which the pseudo tape is wound, wherein the pseudo tape is always wound around the two reels with substantially constant tension. Cassette adapter. 7. The cassette adapter according to claim 1, further comprising an intermediate reel that has a gear that meshes with gears formed on the outer circumferences of the two reels and that interlocks the reels. 8. The pseudo tape is wound around the two reels and the intermediate reel so that the peripheral speeds of the tape contact surfaces of the reel and the intermediate reel coincide with each other.
The cassette adapter according to claim 7, wherein a gear ratio between the reel and the intermediate reel is set.