JPH10188391A - Switch mechanism and recording medium cassette holding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the switch mechanism capable of enhancing detecting accuracy. SOLUTION: This device is equipped with a basic body part 103 equipped with a detecting part 106 to be pressed by a 1st pressing means and a movable contact point 107 to be turned when this detecting part 106 is pressed and a flexible board 104 formed with a fixed contact point 116 to be in contact with the movable contact point 107 when this contact point 107 is turned. Then, the basic body part 103 is provided with a 1st turning fulcrum and a 2nd turning fulcrum of the movable contact point 107, and when the movable contact point 107 is pressed by the 1st pressing means, this contact point 107 is turned around the 1st turning fulcrum, and when this contact point 107 is further pressed, the contact point 107 is turned around the 2nd turning fulcrum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a mechanism for preventing erroneous recording of a tape cassette, a switch mechanism for detecting the presence / absence of a tape cassette, and the like, provided on a recording medium holding means for holding a tape cassette, and a function for detecting these. The present invention relates to a recording medium holding device.

[0002]

2. Description of the Related Art For example, a recording and / or reproducing apparatus for a tape cassette using a magnetic tape as a recording medium has an outer housing, a cassette holder mounted in the outer housing for holding the tape cassette, and a holder for the tape holder. And a lid for opening and closing the recording / reproducing unit for recording and / or reproducing the tape cassette. In such a recording and / or reproducing apparatus, the tape cassette is loaded into the cassette holder with the lid opened, and the tape cassette is mounted on the recording / reproducing unit by closing the lid in this state. . Then, the recording and / or reproducing device is operated by, for example, pressing a reproduction button provided on the outer housing.
As the magnetic tape runs, the magnetic head enters the front surface of the tape cassette and the magnetic head comes into contact with the magnetic tape, thereby reproducing audio data.

[0003] Such a recording and / or reproducing apparatus detects the presence or absence of a tape cassette for the reason that, for example, a reproduction button is pressed in a state where a lid is opened and the apparatus is not operated. A switch is provided on the cassette holder. As shown in FIG. 13, the detection switch 200 includes a cap 202 formed of a conductive rubber material and attached to the flexible substrate 201. The cap 202 has an outer peripheral contact 203 on the outer peripheral side and a convex contact 204 formed in a convex shape in a central region.
Are formed. The outer contact 203 is formed on the outer side conductive pattern 2 formed on the flexible substrate 201.
05 is attached by an adhesive or the like. Convex contact 2
Reference numeral 04 denotes a non-contact state which is positioned corresponding to the inner conductive pattern 206 formed on the inner peripheral side of the outer conductive pattern 205. Such a detection switch 200
When the tape cassette is loaded in the cassette holder,
The convex contact 204 is pressed by one side surface of the tape cassette and is brought into contact with the conductive pattern 206 to establish conduction, thereby detecting that the tape cassette is loaded in the cassette holder.

Further, as another detection switch 210,
There is one as shown in FIG. This detection switch 21
Reference numeral 0 denotes a rotary lever 211, not shown, which is rotatably supported on a support shaft provided on the cassette holder. The pivot lever 211 has a shaft hole 212 formed at one end to be fitted to the support shaft. A pressing portion 213 having a convex shape is provided on one main surface at the other end, and a protrusion 214 is provided on the other main surface. On the other hand, as shown in FIG.
An upper film 216, a conductive film 217 formed on the back side of the upper film 216, a lower film 219 formed via a spacer 218, and a copper formed on a surface of the lower film 219 on the upper film 216 side. Pattern 220
It is composed of Such a detection switch 220
When no tape cassette is loaded in the cassette holder, the protrusion 214 of the rotating lever 211 is in a state of non-contact with the flexible substrate 215. Then, when the tape cassette is loaded into the cassette holder, the pressing portion 213 of the rotating lever 214 is pressed by one side surface of the tape cassette, and the protruding portion 214 comes into contact with the flexible substrate 215 to move the upper film 216. By pressing the conductive film 217 and the copper pattern 220 to make contact with each other, conduction is achieved, and it is detected that the tape cassette is loaded in the cassette holder.

[0005]

As shown in FIG. 13, the detection switch 200 comes into contact with the convex contact 204 of the cap 202 on one side of the tape cassette, and then the convex contact 204 contacts the inner conductive pattern. The stroke before contacting 206 was large. Since the tape cassette has individual differences in its size, if the tape cassette is slightly small, the convex contact 204 and the conductive pattern 20
In some cases, contact with the tape cassette 6 could not be made, and the state in which the tape cassette was loaded could not be detected. Further, since the cap 202 is formed of the rubber material as described above, the cap 202 may be deformed when the tape cassette keeps pressing the convex contact 204 for a long time. In such a case, the cap 202 remains in contact with the conductive pattern 206 even when the tape cassette is removed from the cassette holder, and detects that the tape cassette is not loaded in the cassette holder. You will not be able to do it. Further, since the outer contact 203 is attached to the conductive pattern 205 on the outer peripheral side with an adhesive or the like, the cap 202 requires a large mounting area. Furthermore, the stroke of the cap 202 when the detection switch 200 is pressed more strongly from the state where the convex contact 204 and the conductive pattern 206 are in contact with each other (hereinafter, referred to as overstroke) is small.

In the case of the detection switch 210, as shown in FIGS. 14 and 15, an upper film 216 and a lower film 219 must be bonded around the contact portion with an adhesive. It gets bigger. Also,
The upper film 216 may be deformed when the tape cassette is loaded in the cassette holder for a long time and the state in which the protrusion 214 is pressed continues. Therefore, similarly to the case of the detection switch 200, it may not be possible to detect a state where the tape cassette is not loaded in the cassette holder. When a leaf spring is used for the detection switch 210 instead of the conductive film 217 formed on the back side of the upper film 216, a large force is required for the leaf spring to contact the copper pattern 220. It will be. As described above, it is difficult to accurately detect a leaf spring that requires a large force to achieve conduction. Furthermore, since the detection switch 210 requires the rotation lever 211 to perform detection, the number of components is increased and the production cost is increased. Further, the detection switch 210 cannot make the rotating lever 211 have an overstroke.

[0007] In particular, about one quarter of a normal tape cassette.
In the case of a recording and / or reproducing apparatus for recording and / or reproducing a small-sized tape cassette, the mounting density of components is high, and the detection accuracy of the presence or absence of the tape cassette is particularly required. Further, in this recording and / or reproducing apparatus, downsizing of the detection switch is required in order to improve portability.

Accordingly, an object of the present invention is to provide a switch mechanism and a recording medium holding device capable of improving the accuracy of detection.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a switch mechanism according to the present invention is configured such that a detection unit pressed by a first pressing means and a detection unit is rotated when the detection unit is pressed. And a wiring substrate on which a fixed contact to be contacted when the movable contact is rotated is formed. The base portion is provided with a first rotation fulcrum and a second rotation fulcrum of the movable contact, and the movable contact has the first rotation fulcrum when pressed by the first pressing means. It is turned around the center, and when pressed further, it is turned around the second turning fulcrum.

Further, the recording medium holding device according to the present invention comprises:
In order to solve the above-described problems, a cassette holding unit that holds a recording medium cassette and is rotatably supported on a chassis, a detection unit pressed by the recording medium cassette, and the detection unit is pressed. And a flexible substrate on which a fixed contact to be contacted when the movable contact is rotated is provided. The flexible substrate supports the flexible substrate and is rotated by a cassette holding means. A supporting member which is pressed by the pressing means on the cassette holding means side and is elastically displaced in a direction approaching the base portion; and a detecting means provided on at least one side of the cassette holding means. In the detecting means, a first rotation fulcrum and a second rotation fulcrum of the movable contact are provided on the base portion, and the movable contact is provided with the first rotation fulcrum when pressed by the recording medium cassette. It is pivoted about the fulcrum, and when further pressed, it is pivoted about the second pivot.

Further, in order to solve the above-mentioned problems, a recording medium holding device according to the present invention holds a recording medium cassette and is rotatably supported with respect to a chassis; A base unit including a detection unit pressed by the medium cassette and a movable contact that is rotated when the detection unit is pressed; a flexible substrate on which a fixed contact that is contacted when the movable contact is rotated is formed; A supporting member that supports the flexible substrate and is pressed by the pressing means on the cassette holding means side by a rotating operation of the cassette holding means and is elastically displaced in a direction approaching the base portion. First and second detecting means for detecting the state of the recording prevention mechanism, a detecting unit pressed by the recording medium cassette, and a movable unit which is turned when the detecting unit is pressed. A flexible substrate on which a fixed contact is formed to be contacted when the movable contact is rotated, and a support that supports the flexible substrate and is pressed against the fixed wall by rotating the cassette holding means. And a third detecting means for detecting a state where the recording medium cassette is loaded in the cassette holding means. And the first, second and third detecting means are:
A first rotation fulcrum and a second rotation fulcrum of the movable contact are provided on the base, and the movable contact is rotated about the first rotation fulcrum when pressed by the recording medium cassette. When it is further pressed, it is turned around the second turning fulcrum.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a recording and / or recording apparatus to which a switch mechanism and a recording medium cassette holding device according to the present invention are applied.
Alternatively, the playback device will be described in detail with reference to the drawings. This recording and / or reproducing apparatus is a recording and / or reproducing apparatus for a small tape cassette having a size of about one-fourth of a normal tape cassette.

As shown in FIG. 1, a tape cassette 1 used in this recording and / or reproducing apparatus has a magnetic tape 3 wound around a cassette body 2 having a rectangular main surface formed of a synthetic resin material. The tape reels 4 and 5 are rotatably housed. The cassette main body 2 has a magnetic tape 3 extending from the tape reels 4 and 5 extending on the front side thereof. Specifically, on the front side of the cassette body 2, recording / reproducing openings 6 and 7 into which a magnetic head serving as a recording and / or reproducing mechanism enters, and a pinch roller opening 8 into which a pinch roller enters. The magnetic tape 3 faces outward. Further, openings 9 and 10 into which the holding member on the recording and / or reproducing apparatus enters are provided outside the recording and reproducing openings 6 and 7.

The cassette main body 2 has a reel shaft insertion hole 13 facing the reel shaft holes 11 and 12 into which the tape reel driving mechanisms provided on the tape reels 4 and 5 are fitted. , 14 are provided. In the cassette main body 2, a capstan shaft hole 15 into which a capstan shaft is inserted is provided at the center of the front surface, and positioning holes 16 into which positioning pins are fitted are provided on both sides of the capstan shaft hole 15. , 17 are provided.

Further, the cassette body 2 is provided with erroneous recording prevention mechanisms 18 and 19 on both side surfaces on the back side.
The erroneous recording prevention mechanisms 18 and 19 include holes 20 and 21 provided in the cassette body 2 and cut pieces 22 and 23 provided to close the holes 20 and 21. In such erroneous recording prevention mechanisms 18 and 19, the cut pieces 22 and 23 are provided in the cassette body 2 and the holes 20 and 2 are provided.
In a state in which the tape cassette 1 is closed, the detection mechanism of the recording and / or reproducing apparatus described later in detail detects that the tape cassette 1 is in a state where recording on the magnetic tape 3 is possible. When the cut pieces 22 and 23 are cut off from the holes 20 and 21 and the lid is opened, the erroneous recording prevention mechanisms 18 and 19 record and / or indicate that the tape cassette 1 is in a recording-disabled state. Detected by the detection mechanism on the playback device side.

Then, the recording and / or
Alternatively, as shown in FIG. 2, the reproducing device 30 includes a recording / reproducing unit 31 that constitutes a recording / reproducing unit of the tape cassette 1.
And a speaker unit 32 detachably attached to the recording / reproducing unit 31.

The recording / reproducing unit 31 has a tape cassette 1 with the rear end in the long side direction of the tape cassette 1 as an insertion end.
And a main body 33 that constitutes a recording / reproducing unit for recording and / or reproducing the magnetic tape 3 contained in the tape cassette 1 and a lid 34 that closes the recording / reproducing unit in an openable and closable manner. You.

The recording / reproducing unit 31 has an outer casing made of a metal material such as aluminum (Al), and has a rectangular parallelepiped shape slightly larger than the outer shape of the tape cassette 1 as a whole. And the main body 33
Is provided with an operation unit 35 on the front side thereof. The operation unit 35 includes push buttons, and includes a recording button 36 for performing an operation of recording an audio signal on the magnetic tape 3 of the tape cassette 1, a pause button 37 for temporarily stopping a recording or reproducing operation, and Consists of The operation unit 35 is configured to, when pressed, press a diaphragm switch provided on a flexible substrate disposed in the main body 22.

An erroneous operation prevention shutter 38 is mounted on the main body 33 of the operation section 35. The erroneous operation prevention shutter 38 is slidably assembled over a first position covering the operation unit 35 and a second position facing the operation unit 35 outward. That is, the erroneous operation prevention shutter 38 slides the operation unit 35 to the second position facing the outside only when the user performs a recording operation or a pause operation of the recording operation, that is, the left direction in FIG. Sliding to prevent incorrect operation.

The body 33 is provided with an unlocking knob 39 for the lid 34 for rotating the lid 34 near the operation section 35 to open the recording / reproducing section. The lock release knob 38 slides along a guide hole 40 provided on the front side of the main body 33. The lock release knob 38 is urged leftward in FIG. 2 by a spring (not shown), and is located on the left side of the guide hole 40. In this state, although not shown, there is a locked state in which the locking claw on the main body 33 side is engaged with the engaging portion on the lid body 34 side. Then, the lock release knob 38 is slid rightward in FIG. 2 against the elastic force of the spring to release the lock state between the lock claw on the main body 33 side and the engagement portion of the lid 34. The lid 34 opens the recording / reproducing unit.

On one side of the main body 33, an earphone / microphone jack 41 is provided on the back side where the lid 34 is supported.
Is provided. This earphone / microphone jack 41
For example, when the speaker unit 32 is detached from the recording / reproducing unit 31, the user can listen to audio data reproduced by inserting an earphone. Also provided on this side surface are a volume knob 42, a tape speed switching knob 43, and an identification unit 44 that is lit only during recording.

On the other hand, the operation part 4 is provided on the main surface of the lid 34.
5 are provided. The operation unit 45 includes a rewind button 46 for performing a rewind operation of the magnetic tape 3 of the tape cassette 1 mounted on the recording / reproducing unit, and a fast-forward for similarly performing a fast-forward operation of the magnetic tape 3 of the tape cassette 1. A button 47, a stop button 48 for stopping operations such as playback and recording, and a playback button 49 for starting playback operations
And a hold knob 5 for holding the operation of the device.
0, a counter button 51 for performing a reset operation of a counter for displaying the progress of the magnetic tape 3, and a second setting for setting the apparatus to start recording only when the microphone picks up a sound of a certain volume or more. The operation buttons 46 to 49 are, similarly to the operation unit 35 described above, pressed when these operation buttons 46 to 49 are operated by pressing the diaphragm switch provided on the flexible substrate provided in the main body 22. Is configured to be pressed.

A liquid crystal display panel 53 is provided on the lid 34.
Is provided. On the liquid crystal display panel 53, for example, a mark indicating the current state of the apparatus, for example, a reproduction and recording state, a mark indicating the remaining amount of a battery serving as a power supply, and a running amount of the magnetic tape 3 are displayed. The tape counter is displayed.

The speaker unit 32 includes an earphone / microphone jack 41 of the recording / reproducing unit 31, a volume knob 4
2. Tape speed switching knob 43 and identification unit 44
Is removably attached to the side surface on which is not provided.
The speaker unit 32 includes a speaker device therein. And the speaker unit 3
Numeral 2 outputs audio data recorded on the magnetic tape 3 of the tape cassette 1 mounted on the recording / reproducing unit only when it is mounted on the recording / reproducing unit 31. Although not shown, the speaker unit 32 is provided with a DC IN jack on a side surface.

The recording / reproducing unit 31 described above
The speaker unit 32 is provided with a power supply unit. The power supply of the recording / reproducing unit 31 is configured so that one AA battery can be loaded, and the power supply of the speaker unit 32 is configured so that one AA battery can be loaded. In addition, it is configured such that power can also be supplied from the DC IN jack provided in the speaker unit 32 described above. That is, the recording and / or reproducing apparatus 30 has three power supplies: a power supply for the recording / reproducing unit 31, a power supply for the speaker unit 32, and a power supply for the DC IN jack. When a battery is loaded only in the recording / reproducing unit 31, the recording / reproducing device 30 is supplied with power from the battery, and both the recording / reproducing unit 31 and the speaker unit 32 are used. When a battery is loaded in both, power is supplied from both of them, and when a battery is loaded in either the recording / reproducing unit 31 or the recording / reproducing unit 31, both batteries are loaded. Or the recording / reproducing unit 31 and the speaker unit 3
DC even if no battery is loaded in any of 2
When the IN jack is connected to the speaker unit 32, power is supplied from the DC IN jack preferentially.

Such a recording and / or reproducing apparatus 30
When the recording / reproducing unit 31 is used only, the size of the recording / reproducing unit 31 is slightly larger than the size of the tape cassette 1 to be used. Further, when reproducing the audio data recorded on the magnetic tape 3 of the tape cassette 1, the recording and / or reproducing apparatus 30 can attach the speaker unit 32 to output the audio, thereby improving the convenience. . Further, the recording and / or reproducing device 3
0 is the DC IN even if a battery is loaded in the power supply unit of the recording / reproducing unit 31 or the speaker unit 32.
When power is supplied from the jack, this is used preferentially, and consumption of battery power is prevented.

Next, as shown in FIG. 3, the recording / reproducing unit 31 is provided with a cassette holding device 60 in which the tape cassette 1 is held. The cassette body 2 includes a chassis 61 provided with a tape drive mechanism for running the magnetic tape 3 of the placed tape cassette 1;
A cassette holder 62 rotatably supported by the chassis 61 and holding the tape cassette 1 is provided. Then, the cassette holding device 60 is mounted on the cassette holder 6.
A recording / reproducing unit 63 for recording and / or reproducing the tape cassette 1 in a state in which the tape cassette 2 is closed downward in FIG.
Is configured. Then, in the cassette holding device 60, the tape cassette 1 is inserted with its rear side in the longitudinal direction as an insertion end, and the recording / reproducing opening 6 of the tape cassette 1,
7, the front side provided with the pinch roller openings 8, 9 and the openings 9, 10 is inserted so as to correspond to the front side of the cassette holding device 60.

The chassis 61 is made of a metal material such as aluminum and has a size substantially the same as the outer shape of the tape cassette 1.
Are positioned and mounted so that audio data recorded on the magnetic tape 3 of the tape cassette 1 can be reproduced. That is, the recording / reproducing section 63 has a reel shaft hole 1 of the tape cassette 1 spaced apart from the central area thereof.
The reel shafts 64 and 65 fitted to the first and the second 12 are provided. The reel shafts 64 and 65 are rotated by receiving a driving force from a driving motor, and rotate the tape reels 4 and 5 of the tape cassette 1. In the recording / reproducing section 63, positioning pins 66 and 67 are provided upright on the front side of the recording / reproducing section 63 so as to be separated from the front side of the tape cassette 1. The positioning pins 66 and 67 are fitted into positioning holes 16 and 17 provided on the front side of the tape cassette 1. Further, the recording / reproducing section 63 has a capstan shaft 68 erected at the center on the front side. The capstan shaft 68 is fitted into a capstan shaft hole 15 provided on the front side of the tape cassette 1.

The recording / reproducing section 63 is provided with a pinch roller 69 at the center on the front side thereof so as to face the capstan shaft 68. The pinch roller 69 is supported by a support lever 71 that supports the pinch roller 69. The support lever 71, the support pins 72 erected on one of the corners of the front of the chassis 61 as a rotation fulcrum, in FIG. 3 X _1, X ₂
It is supported to be rotatable in the direction. Then, the support lever 71, in this rotation fulcrum, and is urged in the X ₁ direction in FIG. 3 by a torsion spring (not shown). Then, the pinch roller 69, when recording and / or reproducing of the magnetic tape 3 is rotated in the X ₁ direction in FIG. 3, the pinch roller opening 8 of the tape cassette 1
The magnetic tape 3 is pressed into the capstan shaft 68 and runs at a constant speed. Further, the pinch roller 69, when the case and the magnetic tape 3 to high speed for fast forward, etc. of the magnetic tape 3 is in a stopped state is rotated in the X ₂ direction in FIG. 3, it is locked by a lock mechanism (not shown) Pinch It is retracted from the roller opening 8.

On both sides of the pinch roller 69,
Magnetic heads 73 and 74 are arranged. Although not shown, the magnetic heads 73 and 74 are linked via a link mechanism to the pivoting operation of the support lever 71 of the pinch roller 69. When the magnetic tape 3 is traveling at a constant speed in one direction to perform recording and / or reproduction, one of the magnetic heads 73 and 74 is used for recording and reproduction of the tape cassette 1. The tape enters the tape cassette 1 through the openings 6 and 7 and contacts the magnetic tape 3. That is, when the magnetic tape 3 is traveling in one direction, the magnetic head 73 enters through the recording / reproducing opening 6, and when the magnetic tape 3 is traveling in the other direction. Then, the magnetic head 74 enters from the recording / reproducing opening 7.

[0031] Thus, the magnetic head 73 and 74 is linked to the rotation of the pinch roller 69, the pinch roller 69 is rotated in the X ₁ direction in FIG. 3, an opening for the pinch roller of the tape cassette 1 When the magnetic head has entered the inside of the tape cassette 1 from the section 8, any of the magnetic heads has entered either the recording / reproducing opening 6 or the recording / reproducing opening 7. Also, the magnetic heads 73 and 74
When the pinch roller 69 is retracted from the pinch roller opening 8, the pinch roller 69 is retracted from the recording and reproducing openings 7, 8. Therefore, when the magnetic tape 3 is in a stopped state, the pinch roller 69 and the magnetic heads 73 and 74 are in a retracted state.
3, 74 do not hinder the eject operation of the tape cassette 1.

A regulating wall 75 is provided upright on the rear side of the chassis 61. This restriction wall 75 is formed integrally with the chassis 61. And this regulation wall 7
Reference numeral 5 indicates that when the tape cassette 1 is mounted on the recording / reproducing section 63, the rear side surface of the tape cassette 1 is abutted.

The chassis 61 has a regulating wall 75.
The battery container 76 is attached to the back side where is provided. The battery housing 76 has a battery housing 77 sized so as to store one AAA battery. The battery housing 77 is provided with a positive terminal 78 and a negative terminal 79 on opposing surfaces in the short side direction. In such a battery housing 76, one outer wall 80 in the long side direction is fixedly attached to the rear side of the chassis 61 to form a fixed wall.

The chassis 61 is provided with a pair of support pieces 81 and 82 facing each other on the rear side. The support piece 81 is provided integrally on one side edge of the chassis 61, and the support piece 82 is provided integrally with the regulating wall 75. These support pieces 81 and 82 are provided with a screw hole at the center thereof. And these support pieces 81, 82
, The cassette holder 62 is rotatably supported.

Further, the chassis 61 is provided with a lock mechanism 83 for locking the rotation of the cassette holder 62. The lock mechanism 83 includes a lock lever 84 that is slidable, although not described in detail, and a tension spring (not shown) and the like. And this lock lever 84
It is urged to the rear side of the chassis 61 by a tension spring. A lock claw 85 provided at one end of the lock lever 84 is provided. When the lock claw 85 is engaged with the engaging portion on the cassette holder 62 side, the cassette holder 62 is closed. State is maintained. By operating the above-described lock release knob 39, the lock lever 84 is slid to the front side, and the engagement state between the lock claw 85 and the engagement portion on the cassette holder 62 side is released, whereby the cassette holder 62 is released. It is opened.

The cassette holder 62 has a main surface portion 86 having substantially the same size as the main surface of the tape cassette 1, a first holding portion 87 and a second holding portion 88 erected on the main surface portion 86. Is provided. The first holding portion 87 includes a rising wall 89 formed by rising from a side edge of the main surface portion, and a holding piece 91 provided on the rising wall 89 for holding the main surface of the tape cassette 1. The second holding portion 88 is composed of a rising wall 92 formed by rising on the main surface portion 86 and a holding piece 93 provided on the rising wall 92 for holding the main surface of the tape cassette 1. These rising walls 89, 92 regulate the lateral displacement of the tape cassette 1 mounted on the recording / reproducing section 63,
When the cassette holder 62 is rotated upward, the holding pieces 91 and 93 lift the tape cassette 1 upward in accordance with this movement.

Further, a support piece 94 is provided on the back side of the cassette holder 62, and a screw hole is formed in the center thereof. These support pieces 94 are attached to the chassis 6.
The cassette holder 62 is rotatably supported by being aligned with the support pieces 81 and 82 on one side, and having screws 95 inserted into respective screw holes.

The above-mentioned lid 34 is attached to such a cassette holder 62, so that the lid 34 is rotated in accordance with the rotation of the cassette holder 62.
4 is rotated.

The cassette holder 62 thus configured has first and second detection mechanisms 100 and 101 for detecting whether or not the tape cassette 1 is in a state where recording on the magnetic tape 3 is possible. Are provided on the back side of the first and second holding portions 87 and 88 of the cassette holder 62. That is, these detection mechanisms 100 and 101 detect the state of the erroneous recording prevention mechanisms 18 and 19 provided on the side surface of the tape cassette 1. Since the first detection mechanism 100 and the second detection mechanism 101 have substantially the same configuration,
Hereinafter, the first detection mechanism 100 will be described in detail, and the second detection mechanism 100 will be described.
Regarding the detection mechanism 101, the same members as those of the first detection mechanism 100 are denoted by the same reference numerals, and the details are omitted.

As shown in FIG. 4, the first detection mechanism 100 includes a base 103 mounted on the inside of the cassette holder 62, a flexible substrate 104, and a support member 105 for supporting the flexible substrate 104. Consists of

The base portion 103 is formed by punching a conductive metal plate such as stainless steel and plating the surface thereof with gold. The base unit 103 includes a detection unit 106 which is formed so as to elastically displaced in FIG. 4 X ₃ direction, the movable contact is brought into contact with the fixed contact of the flexible board 104 10
And 7. The detecting unit 106 is formed by bending a metal piece into a mountain shape and forming a vertex 108. A movable contact 107 is formed in the base 103 by forming a punched hole 109. That is,
The movable contact 107 is formed so as to be continuous with the metal piece, and the connecting portion 110 of the movable contact 107 is used as a first rotation fulcrum, and the corner portion 111 of the detection unit 105 is used as a second rotation fulcrum in FIG. X ₃ is rotated in the direction. That is, the first rotation fulcrum is rotated by the torsion of the connecting portion 110, and the second rotation fulcrum is rotated by the bending of the corner portion 111. Then, the first rotation fulcrum and the second rotation fulcrum
Since the rotation fulcrum is rotated by twisting, the operating force is reduced. In addition, since the movable contact 107 is disposed close to a second fixed contact 116 of the flexible substrate 104 described later, a stroke from when the switch is turned off to when the switch is turned on can be shortened. , Detection can be performed accurately.

Further, the base portion 103 is provided with two projecting contacts 112 on the back surface side where the detecting portion 106 is not provided. Furthermore, the notch 113
Is provided, and a support hole 114 is provided in the protruding piece provided on the peripheral edge.

The flexible substrate 104 is formed by applying a wiring pattern to a synthetic resin material having flexibility. As shown in FIG. 4, the flexible substrate 104 has a first fixed contact 115 that contacts a protruding contact 112 provided on the base 103, and a movable contact 1 on the base 103.
07 is formed. The first fixed contact 115 is always located in the state of being contacted with突接point 112, the second fixed contact 116 are in contact only when the movable contact 107 is rotated in the X ₃ direction in FIG. 4 You.

The support member 105 includes a support portion 117 for supporting the base portion 103, a mounting piece 118 provided continuously with the support portion 117, and a pressing piece 119 provided continuously with the support portion 117. Be composed. The support portion 117 includes
Locking portions 120 and 121 are provided. Locking part 12
Reference numeral 0 denotes a state in which the flexible substrate 104 is disposed between the base portion 103 and the support portion 117, and the engaging portion 121 is engaged with the notch portion 113 of the base portion 103, and the engaging portion 121 is engaged with the support hole 114. You. Thereby, the flexible substrate 104
It is sandwiched and supported by the base 103 and the support member 105. Further, a mounting hole 122 is formed in the mounting piece 118. Further, this mounting piece 118 is X ₄ in FIG.
And it is elastically displaceable so formed or X ₅ direction. Also,
The pressing piece 119 is formed by bending from the support part 117.

The first detecting mechanism 10 thus configured
0, the support member 105 is on the outer side, the base portion 103 is on the recording / reproducing portion 63 side, as shown in FIG.
A screw is inserted into the mounting hole 122 of the mounting piece 118 of
Rising wall 8 of first holding portion 87 of cassette holder 62
It is screwed to 9 and fixed. The first detection mechanism 100 will be described with reference to a case where the tape cassette 1 is not inserted while the lid 34 is opened. In this case, the first detection mechanism 100
As shown in FIG. 6, the detecting unit 106 is not pressed by the tape cassette 1. Also, the mounting piece 118 is in a state where the pressing piece 119 is not pressed by the support member 81. Therefore, the movable contact 107 of the base 103 is brought into a non-contact state with the second fixed contact 116. When the tape cassette 1 is closed in a state in which the tape cassette 1 is not loaded in the cassette holder 62, the first detection mechanism 100 stops when the mounting piece 118 is pressed by the support member 81 of the chassis 61, and the movable contact 107 is the second
Is maintained in a state of non-contact with the fixed contact 116 of FIG.

Next, a case where the tape cassette 1 capable of recording on the magnetic tape 3 from which the cut piece 22 of the erroneous recording prevention mechanism 18 of the tape cassette 1 has not been cut is loaded into the cassette holder 62 will be described. . In this case, as shown in FIGS. 5 and 6, when the tape cassette 1 is loaded into the cassette holder 62 and closed, as shown in FIGS.
From that, a first pivot point detecting unit 106 is pressed, i.e., are about the connecting portion 110 is elastically displaced in X ₃ direction state. The pressing piece 119 is elastically displaced in X ₄ direction is pressed by the support member 81 of the chassis 61. Then, the movable contact 107 and the second fixed contact 116
And it has a displacement in the X ₃ direction detection unit 106, the support member 8
Is contacted by the displacement of the first X ₄ direction, detects that the tape cassette 1 is in a state capable of recording on the magnetic tape 3. Further, for example, when the tape cassette 1 slightly larger due to an error there is prepared a standard size is loaded, the detection unit 106, X ₃ direction in time around the second corner portion 111 is a pivot point Move. Thereby, the stroke when the movable contact 107 and the second fixed contact 116 are further pressed after the contact, that is, the overstroke can be increased. Therefore, even when there is a difference in the size of the tape cassette 1 or the cassette holder 62 due to a manufacturing error or the like, the erroneous recording prevention mechanism 18 can be accurately detected.

Then, the tape cassette 1 from which the recording on the magnetic tape 3 from which the cut piece 22 of the erroneous recording prevention mechanism 18 of the tape cassette 1 has been cut off is disabled is placed in the cassette holder 62.
Will be described. In this case, as shown in FIG. 5 and FIG.
Even when the tape cassette 1 is inserted in a state in which the tape cassette 4 is closed, there is no cut piece 22 in the hole 20 of the erroneous recording prevention mechanism 18, so that the detection unit 106 is not pressed and elastically displaced. Contact 107 and second fixed contact 11
6 is in a non-contact state. Therefore, the first detection mechanism 100 detects that the tape cassette 1 is in a state where recording on the magnetic tape 3 is impossible. The pressing piece 11
9 is is elastic pressed X ₄ direction to the support member 81 of the chassis 61 displacement, until the movable contact 107 and second stationary contact 116 is a non-contact state without being displaced.

The cassette holder 62 is provided with a third detection mechanism 130 for detecting whether or not the tape cassette 1 is inserted. The third detection mechanism is provided on the back side of the cassette holder 62, as shown in FIG.

In the case of the second detection mechanism 101,
The pressing piece 119 is elastically displaced by the mounting piece 90 of the support piece 82.

The third detecting mechanism 130 is provided, for example, in FIG.
As shown in FIG. 5, the base member 133 is attached to the inside of the cassette holder 62, the flexible substrate 104, and a support member 135 that supports the flexible substrate 104.

The base portion 133 is formed by punching a conductive metal plate such as stainless steel and plating the surface with gold. The base unit 133 includes a detection unit 136 which is formed so as to elastically displaced in X ₆ direction in FIG. 8, and a movable contact 137 Metropolitan to be contacted with the second fixed contact 146 of the flexible substrate 104. This detector 136
Has a vertex 138 formed by bending a metal piece into a mountain shape. The base portion 133 has a punched hole 13.
9, the movable contact 137 is formed. That is, the movable contact 137 is formed so as to be continuous with the metal piece, and the connecting portion 140 of the movable contact 137 is used as a first rotation fulcrum, and the corner 141 of the detection unit 136 is used as a second rotation fulcrum. It is rotated in the X ₆ direction 8. That is, the first rotation fulcrum is rotated by the torsion of the connecting portion 140, and the second rotation fulcrum is rotated by the bending of the corner portion 141. In addition, the first rotation fulcrum and the second rotation fulcrum are rotated by twisting, so that the operating force is reduced. In addition, the movable contact 137
Since the switch is disposed close to the fixed contact of the flexible substrate 104, the stroke from when the switch is turned off to when the switch is turned on can be shortened, and the detection can be performed accurately.

The base 133 is provided with two projecting contacts 142 on the back side where the detecting section 136 is not provided. Further, a notch 143 is provided on the periphery of the base 133.
Is provided, and a support hole 144 is provided in the protruding piece provided on the peripheral edge.

The flexible substrate 104 is formed by applying a wiring pattern to a synthetic resin material having flexibility as in the case of the first and second detection mechanisms 100 and 101 described above. First fixed contact 145
And a second fixed contact 146 contacting the movable contact 137
Are formed. The first fixed contact 145 is always in contact with the salient contact 142 and the second fixed contact 1
46, the movable contact 137 is in contact only when it is rotated in the X ₆ direction in FIG.

The support member 105 is formed in a plate shape and provided with locking portions 150 and 151. Locking part 150
Is engaged with the notch 143 of the base 133 and the locking part 151 is engaged with the support hole 144 in a state where the flexible substrate 104 is arranged between the base 133 and the base 133. Thus, the flexible substrate 104 is sandwiched and supported by the base portion 133 and the support member 135.

Then, such a third detection mechanism 130
As shown in FIG. 3 described above, is mounted on a substrate 153 which is mounted via a hinge 152 on the back side of the main surface 86 of the cassette holder 62. That is, the substrate 153 is mounted rotatably on X ₇ direction in FIG. In addition, the substrate 153 is located adjacent to the outer wall 80 of the battery housing 76 attached to the back side of the cassette holder 62.

Such a third detection mechanism 130 is provided in FIG.
The case where the tape cassette 1 is not inserted while the lid 34 is open will be described with reference to FIG. In this case, the third detection mechanism 130 is connected to the cassette holder 62
Is pivoted upward, whereby the board 153 is opened outward via the hinge portion 152, and the lower side of the board 153 protrudes outward from the chassis 61. Then, the movable contact 137 of the base 133 is brought into a non-contact state with the second fixed contact 146. Thereby, the cassette holder 6
2 that no tape cassette 1 is loaded.

Next, the case where the tape cassette 1 is loaded in the cassette holder 62 will be described. In this case, as shown in FIG. 10, when the tape cassette 1 is loaded in the cassette holder 62 and closed, as shown in FIG. 10, the detection unit 136 is pressed and the first rotation fulcrum, that is, is a state of being elastically displaced in X ₆ direction around the part 140. On the other hand, the board 153 is abutted against the outer wall 80 of the battery housing 76 attached to the chassis 61. Here, the outer wall 80 has a battery housing 76 fixed to the chassis 61 and forms a fixed wall. Therefore, the third detection mechanism 130 is sandwiched between the back surface of the tape cassette 1 and the outer wall 80, the movable contact 137 contacts the second fixed contact 146, and the tape cassette 1 is loaded into the cassette holder 62. Detect that.

For example, when the tape cassette 1 of a standard size but slightly larger than this is loaded, the detection unit 136 detects the corner unit 1 serving as the second rotation fulcrum.
41 rotates in the X ₆ direction about the. Thereby, the stroke when the movable contact 137 and the second fixed contact 136 are further pressed after the contact, that is, the overstroke, can be increased. Therefore, even when there is a difference in the size of the tape cassette 1 or the cassette holder 62 due to a manufacturing error or the like, the presence or absence of the tape cassette 1 in the cassette holder 62 can be accurately detected.

The first, second, and third detection mechanisms 100, 101, and 130 described in detail above are formed on the same flexible substrate 104. As shown in FIGS. 11 and 12, the flexible substrate 104 is formed by applying a wiring pattern to a synthetic resin material having flexibility as described above using a copper wire or the like. The flexible substrate 104 is cut out based on a rectangular shape substantially similar to the main surface portion 86 of the cassette holder 62. The rewind button 46, the fast-forward button 47, the stop button 48, and the above-described rewind button 46 are provided on the first surface 160 of the flexible substrate 104 which is attached to the main surface portion 86 of the cassette holder 62.
Four diaphragm switches 161 to 164 are provided corresponding to the reproduction button 49. Further, a plurality of locking holes 165 are formed in the first surface 160.
Then, a second surface 167 is provided via the first surface 160 and the fold line 166, and the second surface 167 is provided.
And a connecting piece 169 is provided via a fold line 168. Further, a first piece 171 is provided on the second surface 167 via a fold line 170. The first piece 171 has a connection portion 172 provided with the first detection mechanism 100. An external connection portion 173 for electrically connecting to another printed circuit board or the like is formed at an end of the connection piece 169.
Piece 174 is formed. The second piece 174 is provided with a connection portion 175 where the third detection mechanism 130 is provided. Further, on the first surface 160, a third piece 176 provided with a connection portion 177 to which the second detection mechanism 101 is attached is provided via a fold line 178 on a side where these are not provided.

In such a flexible substrate 104, the second surface 167 is bent 180 degrees leftward in FIG. 11 via the fold line 166, and the first piece 171 is
70 is bent 90 degrees to the right in the figure, and the connection piece 169 is further bent 90 degrees downward in the figure via the fold line 168. Further, the third piece 176 is bent 90 degrees downward in the figure via the fold line 178. As a result, the flexible substrate 104 is folded to the same size as the main surface portion 86 of the cassette holder 62, and the connection portion 172 provided with the first detection mechanism 100 and the second detection mechanism 101 The connecting portion 177 to be attached and the connecting portion 175 to which the third detecting mechanism 130 is provided are the first and second detecting mechanisms 100 and 1.
01 and 130 are provided at predetermined locations. Then, the folded flexible substrate 104 corresponds to FIG.
As shown in FIG. 7, a locking pin 180 provided on the main surface portion 86 of the cassette holder 62 is hooked and attached to the plurality of locking holes 165.

As described above, the first, second, and third detection mechanisms 100, 101, and 130 are the same flexible substrate 1
Because it is provided on the recording apparatus 04, it is possible to improve the space efficiency by folding it, improve the mounting density of components, and further reduce the size of the recording and / or reproducing apparatus 30.

The recording and / or reproducing apparatus 30 having the recording / reproducing unit 31 as described above includes the first, second, and third
Of the base units 103, 1 of the detection mechanisms 100, 101, 130
33 is formed having a first rotation fulcrum and a second rotation fulcrum. Here, the first rotation fulcrum is the corner portions 111, 1
The connecting portion 1 is compared with the second turning fulcrum which is turned by the bend 41.
Since the movable contact is rotated by the twist of 10, 140, the operation force is weakened. Therefore, the detection of the erroneous erasure prevention mechanisms 18, 19 of the magnetic tape 3 of the tape cassette 1 and the detection of the presence or absence of the tape cassette 1 are performed. Can be performed accurately. In addition, the movable contacts 107 and 137 are
Since it is formed by making the holes 09 and 139, they can be provided close to the second fixed contacts 116 and 146, and the stroke, which is the interval until the switches are turned on and off, can be shortened. Furthermore, since the second pivot point has a larger operating force than the first pivot point, the overstroke can be increased. Therefore, even when there is a difference in the size of the tape cassette 1 or the cassette holder 62 due to a manufacturing error or the like, the erroneous recording prevention mechanism 18 can be accurately detected. For example, when the tape cassette 1 of a standard size but slightly larger than this is loaded, the detecting unit 10
6, 136 are corner portions 111 which are second pivot points;
It rotates around 141 to prevent erroneous detection due to this difference in size. Such an effect is particularly effective for the recording and / or reproducing apparatus 30 having a small size and excellent portability. That is, as the device becomes smaller, a manufacturing error in the size of the cassette holder 62 or the tape cassette 1 in manufacturing has a particularly large influence.

Furthermore, the first, second, and third detection mechanisms 100, 101, and 130 need only replace the base portions 103 and 133 when replacing their components. Simplified. The first, second, and third detection mechanisms 100, 101, and 130 include the detection unit 1
By simply changing the shapes of 06 and 136, the mounting position can be changed to various places, and the present invention can be applied to detection mechanisms for various uses.

As described above, about a quarter of a normal tape cassette is used.
Although the recording and / or reproducing apparatus 30 for a tape cassette having a size of has been described in detail, the present invention is not limited to this. For example, a disc-shaped recording medium such as an optical disc, a magneto-optical disc, etc. The present invention may be applied to a recording and / or reproducing apparatus for a stored disk cartridge. In addition, the present invention may be applied not only to a small-sized recording and / or reproducing apparatus but also to a recording and / or reproducing apparatus having a normal size.

[0065]

According to the switch mechanism of the present invention, the first pivot point and the second pivot point of the movable contact are provided,
The movable contact is turned around a first turning fulcrum when pressed by the first pressing means, and is turned around a second turning fulcrum when further pressed. Therefore, it is possible to shorten the stroke, which is the interval from when the movable contact comes into contact with the fixed contact to achieve conduction, and to increase the overstroke, which is the stroke when the movable contact is further pressed after coming into contact with the fixed contact. can do.
In addition, this switch mechanism can simplify the work of replacing parts by simply replacing the base when replacing parts. Further, it is possible to easily provide switch mechanisms corresponding to various places simply by changing the shape of the detection unit.

Further, according to the recording medium holding device of the present invention, the detecting means is provided with the first turning fulcrum and the second turning fulcrum of the movable contact on the base, and the movable contact is provided with the recording contact. When pressed by the medium cassette, it is rotated about the first rotation fulcrum, and when further pressed, it is rotated about the second rotation fulcrum. This makes it possible to shorten the stroke, which is the interval until the movable contact comes into contact with the fixed contact to achieve conduction, and to reduce the overstroke, which is the stroke when the movable contact is further pressed after coming into contact with the fixed contact. For example, the presence / absence of a recording medium cassette and the presence / absence of a cut-out piece of an erroneous recording prevention mechanism of the recording medium cassette can be accurately detected. Also,
Since the overstroke of the detecting means can be increased, the recording medium holding device can accurately detect even if there is a manufacturing error in the size of the recording medium cassette or a manufacturing error in the size of the cassette holding means.

Furthermore, according to the recording medium holding device of the present invention, the state of the erroneous recording prevention mechanism of the recording medium cassette can be accurately detected by the first and second detecting means, and the third detecting means can be detected. Thus, the presence or absence of the recording medium cassette can be accurately detected.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a tape cassette.

FIG. 2 is an overall perspective view of a recording and / or reproducing apparatus described in an embodiment.

FIG. 3 is an exploded perspective view of a cassette holding device of the recording and / or reproducing device.

FIG. 4 is an exploded perspective view of first and second detection mechanisms provided in the cassette holding device.

FIG. 5 is a perspective view of a main part of the cassette holding device provided with the first and second detection mechanisms.

FIG. 6 is a cross-sectional view of first and second detection mechanisms for explaining an OFF state.

FIG. 7 is a cross-sectional view of first and second detection mechanisms for explaining an ON state.

FIG. 8 is an exploded perspective view of a third detection mechanism provided in the cassette holding device.

FIG. 9 is a cross-sectional view of a third detection mechanism for explaining an off state.

FIG. 10 is a cross-sectional view of a third detection mechanism for explaining an ON state.

FIG. 11 is a plan view of a flexible substrate.

FIG. 12 is a plan view of the cassette holder.

FIG. 13 is an exploded perspective view of a conventional detection switch.

FIG. 14 is an exploded perspective view of another conventional detection switch.

FIG. 15 is a sectional view of a main part of the detection switch.

[Explanation of symbols]

1 tape cassette, 2 cassette body, 3 magnetic tape, 18, 19 erroneous recording prevention mechanism, 20, 21 hole,
22, 23 cut pieces, 30 recording and / or reproducing device,
Reference Signs List 31 recording / reproducing unit, 32 speaker unit, 33 main body, 34 lid, 60 cassette holding device, 61 chassis, 62 cassette holder, 63 recording / reproducing unit, 76 battery storage unit, 77 battery storage unit, 80
Outer wall, 100 first detection mechanism, 101 second detection mechanism, 103 base portion, 104 flexible substrate,
105 support member, 106 detector, 107 movable contact, 110 connecting part, 111 corner, 112 salient contact, 115 first fixed contact, 116 second fixed contact, 130 third detection mechanism, 133 base part, 135
Support member, 137 movable contact, 140 connecting part, 14
Reference Signs 1 corner portion, 142 protruding contact, 145 first fixed contact, 146 second fixed contact

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 25, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

The body 33 is provided with an unlocking knob 39 for the lid 34 for rotating the lid 34 near the operation section 35 to open the recording / reproducing section. The lock release knob 39 slides along a guide hole 40 provided on the front side of the main body 33. The lock release knob 39 is urged leftward in FIG. 2 by a spring (not shown), and is located on the left side of the guide hole 40. In this state, although not shown, the locking claw on the main body 33 side is in a locked state in which it is engaged with the engaging portion on the lid body 34 side. Then, the lock release knob 39 is slid rightward in FIG. 2 against the elastic force of the spring to release the lock state between the lock claw on the main body 33 side and the engagement portion of the lid 34. The lid 34 opens the recording / reproducing unit.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

The recording / reproducing unit 31 described above
The speaker unit 32 is provided with a power supply unit. The power supply of the recording / reproducing unit 31 is configured so that one AA battery can be loaded, and the power supply of the speaker unit 32 is configured so that one AA battery can be loaded. In addition, it is configured such that power can also be supplied from the DC IN jack provided in the speaker unit 32 described above. That is, the recording and / or reproducing apparatus 30 has three power supplies: a power supply for the recording / reproducing unit 31, a power supply for the speaker unit 32, and a power supply for the DC IN jack. When a battery is loaded only in the recording / reproducing unit 31, the recording / reproducing device 30 is supplied with power from the battery, and both the recording / reproducing unit 31 and the speaker unit 32 are used. When a battery is loaded in both, power is supplied from both of them. When a battery is loaded in either the recording / reproducing unit 31 or the speaker unit 32, a battery is loaded in both. Or the recording / reproducing unit 31 and the speaker unit 3
DC even if no battery is loaded in any of 2
When the IN jack is connected to the speaker unit 32, the power supply from the DC IN jack is preferentially supplied.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Change

[Correction contents]

The base portion 103 is formed by punching a conductive metal plate such as stainless steel and plating the surface thereof with gold. The base unit 103 includes a detection unit 106 which is formed so as to elastically displaced in FIG. 4 X ₃ direction, the movable contact is brought into contact with the fixed contact of the flexible board 104 10
And 7. The detection unit 106 is formed by bending a metal piece into a mountain shape and forming a vertex 108. A movable contact 107 is formed in the base 103 by forming a punched hole 109. That is,
The movable contact 107 is formed so as to be continuous with the metal piece, and the connecting portion 110 of the movable contact 107 is used as a first pivot, and the corner 111 of the detection unit 106 is used as a second pivot. X ₃ is rotated in the direction. That is, the first rotation fulcrum is rotated by the torsion of the connecting portion 110, and the second rotation fulcrum is rotated by the bending of the corner portion 111. Then, the first rotation fulcrum and the second rotation fulcrum
Since the rotation fulcrum is rotated by twisting, the operating force is reduced. In addition, since the movable contact 107 is disposed close to a second fixed contact 116 of the flexible substrate 104 described later, a stroke from when the switch is turned off to when the switch is turned on can be shortened. , Detection can be performed accurately.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction contents]

Then, the tape cassette 1 from which the recording on the magnetic tape 3 from which the cut piece 22 of the erroneous recording prevention mechanism 18 of the tape cassette 1 has been cut off is disabled is placed in the cassette holder 62.
Will be described. In this case, as shown in FIG. 5 and FIG.
Even when the tape cassette 1 is inserted in a state in which the tape cassette 4 is closed, there is no cut piece 22 in the hole 20 of the erroneous recording prevention mechanism 18, so that the detection unit 106 is not pressed and elastically displaced. Contact 107 and second fixed contact 11
6 is in a non-contact state. Therefore, the first detection mechanism 100 detects that the tape cassette 1 is in a state where recording on the magnetic tape 3 is impossible. The pressing piece 11
9 is is elastic pressed X ₄ direction to the support member 81 of the chassis 61 displacement is not displaced until the movable contact 107 and second stationary contact 116 is in a state of contact.

[Procedure amendment 5]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

FIG. 3

Claims (7)

[Claims] 1. A base unit having a detection unit pressed by a first pressing unit and a movable contact that is turned when the detection unit is pressed, and is contacted when the movable contact is turned. A wiring substrate on which a fixed contact is formed; a first rotation fulcrum and a second rotation fulcrum of the movable contact are provided on the base; and the movable contact is pressed by first pressing means. A switch mechanism characterized in that the switch mechanism is rotated about a first rotation fulcrum when pressed, and is rotated about a second rotation fulcrum when further pressed. 2. The switch mechanism according to claim 1, wherein the wiring board is formed of a flexible board, and the flexible board is supported by a support member. 3. The apparatus according to claim 2, wherein the support member is formed so as to be elastically displaceable, and is elastically displaced in a direction approaching the base portion by being pressed by a second pressing means. Switch mechanism. 4. A cassette holding means for holding a recording medium cassette and rotatably supported on a chassis, a detecting portion pressed by the recording medium cassette, and being rotated when the detecting portion is pressed. A movable contact, a flexible substrate on which a fixed contact to be contacted when the movable contact is turned is formed, and the cassette holding means supporting the flexible substrate and rotating the cassette holding means. A supporting member that is pressed by the pressing means on the side and elastically displaces in a direction approaching the base part; and a detecting means that is provided at least on at least one side of the cassette holding means. A first rotation fulcrum and a second rotation fulcrum of the movable contact, and the movable contact is provided with a first rotation fulcrum when pressed by the recording medium cassette. A recording medium cassette holding device, wherein the recording medium cassette holding device is rotated about a moving fulcrum, and is further rotated about a second rotation fulcrum when further pressed. 5. The recording medium cassette holding device according to claim 4, wherein said detecting means is provided on both sides of said cassette holding means. 6. A cassette holding means for holding a recording medium cassette and rotatably supported by a chassis, a detecting section pressed by the recording medium cassette, and being rotated when the detecting section is pressed. A movable contact, a flexible substrate on which a fixed contact to be contacted when the movable contact is turned is formed, and the cassette holding means supporting the flexible substrate and rotating the cassette holding means. First and second detecting means for detecting a state of an erroneous recording preventing mechanism provided on the recording medium cassette, the supporting means being provided with a supporting member which is pressed by the pressing means on the side and elastically displaced in a direction approaching the base portion; A base unit having a detection unit pressed by the recording medium cassette and a movable contact turned when the detection unit is pressed; and a fixed unit contacted when the movable contact is turned. A state in which a flexible substrate on which contacts are formed, a support member that supports the flexible substrate and is pressed against a fixed wall by a rotating operation of the cassette holding means, and a recording medium cassette is loaded in the cassette holding means And a third detecting means for detecting the following. The first, second, and third detecting means are provided on the base portion,
A first rotation fulcrum and a second rotation fulcrum of the movable contact are provided, and the movable contact is rotated about the first rotation fulcrum when pressed by the recording medium cassette, and further pressed. The recording medium cassette holding device is rotated about a second rotation fulcrum when the recording medium cassette is rotated. 7. The first, second and third detecting means,
7. The recording medium cassette holding device according to claim 6, wherein the recording medium cassette holding device is formed on the same flexible substrate.