JPS5822820B2 - cassette tape player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the invention of a cassette-type tape player, which is capable of recording and playing back by reversing the running direction of the tape, and is capable of automatically repeating tape playback and one-cycle playback as appropriate. It is possible to select and play the tape and appropriately judge whether or not continuous recording is possible, thereby smoothly realizing a preferable recording operation in accordance with the conditions of each cassette tape.

Tape players that record and play back cassette-type tapes have been known for a long time, and auto-reverse systems in which the tape running direction is reversed for playback and recording are also generally known.

In other words, since it enables automatic continuous playback or continuous recording of multiple channels, it can be said to be preferable in terms of usage. There is a disadvantage that the recording continues, and during recording, it automatically continues, resulting in duplicate recording, and although it is an auto-reverse system, it is not always suitable for use.

Even if it is preferable to automatically continue recording or playing continuously with a lid on, it is natural that users may not want to play the same recording repeatedly, especially when recording. Although it is clear that recording is strictly prohibited, and in cases where there is a risk of duplicate recording, the benefits of automatic continuous recording are almost completely lost.
Until now, such a relationship has not been properly resolved.

The present invention has been devised after repeated studies in view of the above-mentioned actual situation, and in order to perform recording as well as playback in a tape player that follows the above-mentioned auto-reverse method, the present invention is performed in one cycle for the playback. One-cycle playback, which is ejected later, and automatic continuous playback (auto repeat) can be selected as appropriate, and regarding the above-mentioned recording, it is possible to determine whether or not recording operations can be performed on the installed cassette, and whether or not automatic continuous recording is possible. This system allows smooth recording to be performed in accordance with the cassette situation and effectively prevents duplicate recording and other erroneous operations.

To explain embodiments of the present invention as shown in the attached drawings, the external appearance of the tape player according to the present invention is as shown in FIG. 301 is arranged, and the top cover 3 is placed on the top surface.
02 is applied, and the height and the size of the decorative frame 301 are the same as those of a tape player using a conventional rear jet type tape cartridge. Therefore, this rear jet type tape player It is clear that it can be installed at the same location on the vehicle.

However, an opening 303 for inserting the drawer body 200 is formed in the front surface of the housing 1, and the opening 30
An operation section 304 for ejecting and an operation section 305 for adjusting volume and sound quality are provided on both sides of the housing 1. Furthermore, partition walls 306 are provided on both sides inside the housing 1. A top plate 307 is attached to the top surface, and one side of this top plate 307 has a slightly lower terminal plate mounting area 310 due to a bent portion 311, so that the partition wall 30 as described above is formed.
6. Both sides of 306 form storage chambers 308 and 309.

The drawer body 200 that is installed and removed between the partition walls 306 and 306 as described above is shown in FIG. By bending the substrate 208, the hanging walls 209 and 209 hanging down on both sides are placed on appropriate trochanters 98 and slidably operated, and on the front side there is a fast-forwarding plate 209, which is clearly shown in FIG. Rewind direction selection buttons 201 and 202, a recording button 203, a continuous/discontinuous switching operation section 204, and a channel switching operation section 205 are exposed and arranged on the surface of the decorative plate 206.

However, on the upper surface of the substrate 208 as described above, springs 19 are arranged on both sides, and a sliding plate 2 that is movable by a trochanter 20 is provided.
A pinch roller holder 14 is attached with a recording/reproducing head 10, erasing heads 11, 12, and a spring 13 on the top side of the sliding plate 210, and is energized.
are arranged in a row as shown in the figure, and the pinch roller 15 attached to the holder 14 is opposed to the capstan shaft 16 protruding from the base plate 208 so as to be appropriately pressed against the capstan shaft 16.

A large opening 211 is formed in the center of the sliding plate 210 to expose the capstan shaft 16 and the positioning pin 17 of the cassette 50, and the reel shaft of the cassette 50 is fitted therein.

The drive shafts 18, 18 also protrude from the opening 212 of the sliding plate 210, respectively.

Support members 213 are provided oppositely on both sides of the front of the board 208.
A rotating shaft 214 is rotatably horizontally suspended between these supporting members 213 and 213, and the supporting member 2 of the rotating shaft 214 is
Husband engaging pieces 215 are attached to positions protruding outward from 13, and these engaging pieces 215 have bent ends to form engaging portions 216 that protrude laterally. A stopper 217 is fixed to the stopper 2.
17 is provided with a spring 218 to form an engaging portion 21 as described above.
6 is always urged to rotate downward, and this rotational force is stopped at a predetermined position by pressing the stopper 217 against the surface of the substrate 208.

Furthermore, a motor 1 is attached to the front side of one side of the rotating shaft 214, and serves as a tape drive and other drive sources as will be described later.

The portion where the drive shafts 1B, 18 and the positioning pin 17 as described above are arranged is a loading/unloading area for the cassette 50, and a push-up lever 91 for the cassette 50 is provided in front of the cassette loading/unloading area. That is, this push-up lever 91 is connected to the support seat 9 attached to the front of the cassette loading/unloading area.
It is pivoted 92 on the side surface of the cassette 50, and one end thereof is bent to form an engaging portion 93 that engages with the bottom surface of the loaded cassette 50, and the other end is provided with a drawer body 200 as described above. A protrusion 94 that engages and disengages with the interlocking piece 95 that engages and disengages during the disengagement operation, and a locking protrusion 96 that engages and locks the sliding plate 210 are formed.

The intermediate portion of the interlocking piece 95 is pivotally attached to the upper surface of the support seat 9.
90, an engaging portion 194 for engaging and disengaging with the protrusion 94 as described above is formed in a bent manner at the tip thereof, and a top plate 307 is formed at the other end as shown in FIG. An inclined folding section 193 that operates by engaging with a swinger 192 attached with a bullet 191 is attached to the bent portion of the slider. The details of the cassette pushing up and sliding plate locking functions described above are shown in detail in FIGS. 3 to 6.

That is, first of all, in its structure, the idler 192 is made of synthetic resin and has an inclined guide portion 196 formed on its lower surface, and a tension spring 195 is provided between the interlocking piece 95 and the support seat 9. Since the interlocking piece 95 is always rotated clockwise, the push-up lever 91
A winding strip 197 is interposed between the support seat 9 and the right side of the push-up lever 91 when viewed from the front side.
That is, the aforementioned locking protrusion 96 portion is always subjected to an operating force that pushes it downward.198.
Reference numeral 199 indicates a column that supports the support seat 9 on the substrate 208 in a stable state.

However, regarding the effects of such a structure, see the third section.
6, and when the cassette 50 is simply placed on the drawer body 200 or ejected, the engaging portion 93 is pushed up as shown in FIG. The engaging portion 194 is also disengaged, but if the cassette 50 with one side pushed up is dropped from this state, the engaging portion 93 of the push-up lever 91 will be pushed down, as shown in FIG. In this state, the protrusion 94 side is pulled up against the elasticity of the winding strip 1970 and is engaged with the engaging portion 194. In this state, the sliding plate 2 of the locking protrusion 96
The locked state for 10 is also released.

However, when the drawer body 200 is pushed in after the cassette 50 is completely installed in this manner, the outer surface of the inclined folding portion 193 and the outer surface of the guide portion 196 are joined, forming a relationship as shown in FIG. The child 192 is pushed out in the direction of the arrow shown in the figure and enters. At this time, the engagement between the protrusion 94 and the engagement part 194 is made so that the interlocking piece 95 acts reliably as a fixed body, and the engagement relationship is released. Although this is not the case, the drawer body 20
0 is inserted and the required regeneration is completed, this drawer body 20
When extracting and ejecting the bullet 0, the folding portion 193 and the guide portion 196 are joined at their inclined inner surfaces, as shown in FIG. Since it is connected to the part 311 and functions as a semi-rigid body, the interlocking piece 9
5 is rotated counterclockwise as shown by the arrow in FIG. The engagement relationship with the portion 194 is released.

When the engagement relationship between the protrusion 94 and the engagement part 194 is disengaged, the winding strip 194 acts to push down the protrusion 94 and the locking protrusion 96 side of the push-up lever 91, and the locking protrusion 96 slides. It engages with and locks the plate 210.

A terminal plate 221 is attached to a position close to the rotating shaft 214 on the board 208, and another terminal plate 222 is attached on the motor 1, and these terminal plates 221.
222, an opening 223.222 is provided in the top plate 307.
Contact piece mounting seats 225 and 226 are arranged for 224,
The contact pieces 227 and 228 of the mounting seats 225 and 226 are exposed.

Further, other openings 229° and 230 are formed in the top plate 307,
A presser roller 231 is disposed in one of the openings 229 so as to press the upper surface of the inserted drawer body 200, and a power switch 232 is disposed in the other opening 230. , this power switch 232 has a detection part 233 attached to the tip of the middle bullet piece 232a, and detects the protrusion 50a of the cassette 50 fitted in the drawer part 200 pushed in as described above, and turns on the power. In other words, the power switch 232 is first connected to the terminal plate 221 and the contact piece 227 after the contact is formed and maintained.
is closed.

Furthermore, a plunger 234 is provided at the back of the top plate 307 as shown in FIG. 1, and a locking portion 236 is formed at the tip of a locking/disengaging piece 235 attached to the rod, and the base end is pivotally connected. 237, such engaging/disengaging pieces 235 face the protrusions 238 on the base plate 210 of the drawer body 200, and engage with each other at the final push-in position of the drawer member, and are activated by energizing the plunger 234. This engagement relationship is released.

As is clear from FIGS. 7 to 9, on the bottom surface of the substrate 208, there are first and third slides attached to the feed direction selection buttons 201 and 202, together with the first slide piece 3. Moving pieces 4 and 5 are attached to each other in a superposed manner, and these three sliding pieces 3, 4, and 5 have first elongated holes 31, 41, and 51, respectively.
, second elongated hole 32, 42, 52, third elongated hole 33, 4
3, 53 and a fourth elongated hole 34, 44, 54 are formed, and the second and third sliding pieces 4, 5 have a bent portion 45°5 on the side.
5 is provided, and a protrusion 3 is provided on the side of the front end of the first sliding piece 3.
6 is provided on the substrate 2 as shown in FIG.
As shown in FIG.
29, and two inclined protrusions 38, 48 and 58 are protruded from the other side edges of the first to third valley sliding pieces. Slanted protrusion 38°48
．． 58 is a trochanter 4 provided on the bottom surface of the sliding plate 210.
0 to push out the sliding plate 210 against the elasticity of the springs 1919.

Engaging protrusions 46 are provided on the sides of the tips of the second and third sliding pieces 4 and 5.
56 are provided in a protruding manner, and switch operation protrusions 47 and 57 are bent at the respective ends, and springs 75 and 74 are attached to these sliding pieces 4 and 5 at spring mounting portions 49 and 59, respectively. An acting force is applied to each of the sliding pieces 4 and 5 to cause them to protrude toward the front side and return to their original positions.

A brake piece 6 is further attached to the lower surface of the third sliding piece 5, and the brake piece 6 has a guide hole 61°61 and a guide mechanism 62 perpendicular to its length direction.
, 62 are formed, and a pressure receiving part 63 is bent and provided on the intermediate side thereof, and two brake parts 64 and 64 are similarly bent and formed on the other side opposite to the pressure receiving part 63.

As shown in FIGS. 7 and 8, a tension spring 65 is provided on the brake plate 6 and acts to draw the pressure receiving portion 63 inward. The actuating portion 6 is one end of the brake actuating piece 66 supported by the support 6γ.
B is facing, and this brake actuating piece 66
A spring 69 is disposed on the pivot portion 67 of the brake lever 69 so as to follow the pressure receiving portion 63, and a protrusion 70 formed at the other end of the brake operating piece 66 is provided with a spring 69 as described above. Momentary operating portions 4a and 5a provided on the sides of the second and third sliding pieces 4 and 5 are exposed, and their sliding provides instantaneous operation to the brake actuating piece 66. The brake parts 64, 64 of the brake plate 6 are momentarily applied to the rotating wheel 80 attached to the drive shaft 18 at the friction material 80a, such as rubber, on the periphery thereof to stop their rotation, and then the rotation is stopped again. It's meant to be liberating.

A balance operation piece 7 is provided in front of the brake plate 6, and the balance operation piece 7, which is attached at a pivot hole 72, has an arm 73 formed on one side and a fork end 71. Further, springs 74 and 75 of the same strength are provided oppositely on both sides of the pivot hole 72, and the fork end 71 as described above is connected to the rotating ring 80 as shown in FIG.
It engages with a shaft 78 formed at one end of an interlocking piece 76 provided on the side of 80 degrees, and rolling elements 77 are rotatably attached to both ends of such an interlocking piece 76, respectively. Furthermore, an elastic member 79 having the same strength is provided symmetrically to the interlocking piece 76 and the fixing pin 79a.

In addition to the rotary wheels 80 and 80 shown in FIGS. 7 and 8 described above, there is also a first rotary ring shown in FIG.
As is clear from FIG. 4, there is provided a sliding member 8, which has first to fourth openings 81, 82, 83° 84 as shown in the drawing. A movable piece 86 is positioned in a recess 85 formed on the intermediate side of the movable piece 86, and two fixing points 88, 88 formed on one side of the sliding member 8 described above. A spring 87 having the same strength as the husband and husband is stretched between the two fixed points 90°90 formed on the other side of the sliding member 8 and the first operating point located on the sliding member 8. A spring 89, 89 of the same strength is also provided between the first operating member 180 and the first operating member 18.
A locking protrusion 186 bent and formed at the tip of a second operating member 185 further disposed relative to the first operating member 18
It is adapted to engage with a perforation 181 provided at the proximal end of 00.

Further, a transmission wheel 183 is rotatably provided on a support shaft 182 vertically disposed on the first operating member 180.
Another one for the support shafts 187 and 188 planted at 85.
Two transmission wheels 184 and a gear portion 189 are each provided rotatably.

Furthermore, the engaging protrusion 186 in this second member 185 and the support shaft 1
Another engaging protrusion piece 179 is bent downward and formed between the movable piece 87 and the movable piece 87.
6 and is adapted to be engaged with an engagement recess 178 provided in the middle of 6.

A coaxial gear portion 177 is formed on the transmission ring 184, and this gear portion 177 is engaged with the aforementioned gear portion 189 during assembly.

Regarding the transmission wheels 183, 184 and gear portion 189 as shown in FIG. 11, the conversion gear body 150 and intermediate gear 160 as shown in FIGS. 11 and 12 are further included as shown in FIG. The second opening 81 and the second opening 81 and 82 are arranged in the second opening 81 and 82.

That is, the conversion gear body 150 has arc-shaped partial notches 151, 151 disposed oppositely on its circumferential side, and these partial notches 15
A gear part 152:152 is formed on the circumferential side between 1 and 151,
Moreover, the annular protrusion 1 has a cam protrusion 153 on its lower surface.
54, and the intermediate gear 160 is connected to the gear portion 15.
2 or falling into the partial notch 151 to release the interlocking relationship, and a pulley part 162 is integrally molded coaxially with this gear part 161. .

Furthermore, the upper surface of the conversion gear body 150 has an eccentric annular portion 155 and a
Plunger operating protrusions 1 arranged oppositely at an interval of 80°
56° 156 are arranged opposite to each other, and these operation protrusions 156 are separately attached to the plunger 140 attached to the bottom surface of the base plate 208.
It acts on the operating member 142 arranged against.

That is, the suction plate 143 of the operating member 142 is positioned to appropriately protrude from the operating member 142 with respect to the suction portion 141 of the plunger 140, and the operating member 142 is pivotally supported on the bottom surface of the base plate 208 by a pivot 144. te spring 145
The suction plate 143 has a tensile force that constantly pulls the suction plate 143 apart, and the suction plate 143 is kept at a constant distance from the suction part 141 by a suitable stopper provided on the base plate 208. Further, the other side of the operating member 142 has a tail end 14 that engages with the plunger operating protrusion 156 described above.
The conversion gear body 1 is rotated by the operating protrusion 156
Pressure-receiving portions 147 that receive the outward extrusion action of 50 are formed, respectively.

Further, the eccentric annular portion 155 described above is fitted into the opening 81, and therefore, when the conversion gear body 150 having such an eccentric annular portion 155 is rotated, the sliding member 8
is adapted to be moved and operated in its length direction, and a separate substrate 2 is provided for the annular protrusion 154 described above.
The bullet piece 149 of the rotation direction detection switch 148 attached to the rotation direction detection switch 148 is exposed, and is adapted to receive detection switching operation as appropriate by the action of the cam protrusion 153.

That is, the conversion gear body 15 shown in FIGS. 12 and 13
To explain the operation related to 0 etc., as is known, the plunger 140 is actuated by energization of the detection circuit that detects the end of the tape wound on the cassette, and the suction plate 143 is activated.
When the operation member 142 is pulled by the suction part 141, the operating member 142 rotates counterclockwise. Due to the load difference between the springs 87 and 89 caused by the displacement, the conversion gear body 150, which had stopped rotating in the deflected state, is momentarily rotated and engaged with the drive gear 161, and is driven to rotate dynamically.

At this time, the operating section 156 pushes out the pressure receiving section 147 of the operating member 142 to the outside during the rotation, thereby allowing the gear sections 161 and 152 to be accurately aligned without being affected by residual magnetic force or other influences.
The eccentric annular portion 155 is rotated 180° to cause the sliding member 8 to slide, automatically reversing the feeding direction and performing an auto-reverse operation.

The general interlocking relationship between the transmission wheels and gear members as described above is summarized in FIG. 13, that is, the third and fourth openings in the sliding member 8 as described above There are two flywheels 165 in the 83 and 84 parts, respectively.
166 is provided, the central axis of which forms the capstan shaft 16 on the substrate 208 described above.

That is, the belt 164 that is suspended around the driving shaft of the motor 1 is hooked around the pulley portion 162 of the intermediate gear 160, and then is suspended around one flywheel 165, and then guided to the other flywheel 166 and then suspended. The hook is rotated so as to return to the driving shaft of the motor 1, and drives these rotating members 160, 165, and 166 as shown by arrows, for example.

In other words, in such a configuration, the flywheel 165
, 166, pinch-up and take-up in the 15th
As shown in the figure, each flywheel is operated by a separate flywheel to divide the rotational load, thereby stabilizing the entire mechanism and preventing mechanical noise from the take-up side from being transmitted to the capstan side. Furthermore, the conversion switching operation using the rotary cam is performed by using the intermediate pulley body 162 provided to appropriately route the belt 164 around the flywheel 165, as described above. It is clear that when the eccentric annular portion 155 rotates by 1500 rotations of the gear converter, the sliding member 8 is moved to the right or left in the drawing.

Transmission wheels 183, 184 on the first and second operating members 180, 185 mounted with 87, 87 and 89, 89
The gear portion 189 is moved to the right or left in FIG. 13 depending on the amount of movement of the sliding member 8 as described above, and therefore the transmission wheel 183 is formed on the flywheel 165 or 166. Concentric rings 175, 176
As mentioned above, the transmission wheel 184, between which the belt 163 is suspended and the small ring portion 183a of the transmission wheel 183, is connected to either of the small ring portions 183a and the transmission wheel 184 is joined to the small ring portion 183a of the transmission wheel 183, and its rotation is transmitted. The small wheel part 169 (see FIG. 10) that drives the gear part 189 and is coaxial with the gear part 189 moves the left and right rotating wheels 80 by the movement of the second operation part body 185 as described above.
, 800, and the contacting rotating wheel 80 is 1
Depending on which of these rotary wheels 80, 80 is selected, the tape in the cassette 50 fitted to the drive shafts 18, 18 can be forwarded or rewinded. As mentioned above, when performing such a switching operation, depending on whether the continuous or non-continuous operation unit 204 is operated as shown in FIG. It is determined whether the first channel is played back continuously, or the first channel is played back by the first and second tracks, and the second channel is played by the third and fourth tracks, and then stopped. and plunger 1
Even if the suction plate 143 is still pulled due to the residual magnetism caused by
It is forced to leave by receiving the action of 6.

The above-mentioned FIG. 14 shows a configuration according to the present invention shown in the above-mentioned FIG. 13 in which a rolling element 77 is further arranged to achieve the purpose of rapid forwarding, that is, as already shown in FIG. 7. An interlocking piece 76 is provided at the rotating wheel 8080 portion, and this interlocking piece 76 engages with a fork portion 71 formed at the tip of the balance operation piece 7 at the shaft rod 78 portion.

The balance operation piece 7 has a shaft installed in its pivot hole 72, and is connected to the first to third sliding pieces 3 as shown in FIG.
4.5, and the interlocking piece 76 can be operated by sliding the sliding pieces 3, 4, and 5.

That is, when the feed direction selection button 201 is pressed to move the second sliding piece 4 forward, the spring 75 attached to one side thereof expands and moves the interlocking piece 76 to the left in FIG. , whereby the rolling elements 77 are connected to the flywheel 16
5 and the rotating wheel 80 on the right side in the figure, and the rotation by the flywheel 165 is directly transmitted to the rotating wheel 80 on the right side. When moving the sliding piece 5 forward, the spring 74 attached to the other side extends, and the balance operating piece 7 rotates clockwise in FIG. On the contrary, the interlocking piece 76 is moved to the right in FIG.
The rotation of the flywheel 166 is directly transmitted to and driven by the rotary wheel 80, thereby achieving a fast forwarding effect in any case.

As described above, when the selection buttons 201 and 202 are operated, braking by the brake pieces 6 is instantaneously applied.

As shown in FIG. 10, two inverted U-shaped notches 350 are formed on the side surface of the cassette 50.
First, the side with 50 is brought into contact with the sliding plate 210 surface, and the 10th
The holding piece 250 is inserted into the opening 242 formed in the middle of the hanging wall 209 of the substrate 208 as shown in FIG. In FIG. 10, the capstan shaft 16, positioning pin 17 and drive shaft 18 are locked to the upper edge of the right end in the figure.
are fitted into the required cassette fitting holes 266, 267 and 268 to form a stable mounting relationship.

Incidentally, on the sides of such a substrate 208, there are bullet pieces 252 and 253 whose upper ends are bent inward so as to come into contact with the side surfaces of the cassette 50 mounted thereon.
These projecting pieces 253 are provided at positions immediately corresponding to the projecting pieces 351 in the inverted U-shaped notch 350 of 0, and these projecting pieces 253 are provided with switches SW4 as described later. The cassette 50 fitted in this manner is normally fitted with its protruding pieces 351 pushing out the bent portions 254 of the bullet pieces 252 and 253, so that the cassette 50 can be used freely by forming the required circuit including erasing. However, if you want to permanently preserve the recording on the tape in the cassette 50, you can break off the protrusion 351 that corresponds to the recording track. Piece 35
Since the cassette 50 from which part 1 has been broken does not push out the bullet pieces 252 and 243 even if it is installed as shown in FIG. Therefore, the erase circuit formed by these will not be established, and even if the erase head surfaces 11 and 12 are erroneously guided, the recordings of those tracks will not be erased.

A schematic electrical circuit configuration according to the present invention is shown in FIG.

That is, a conductor ring 280 is attached to the above-mentioned rotating wheel 80 formed coaxially with one drive shaft 18, and this conductor ring 28
An elastic contact piece 281 is disposed at 0 to form a detection section 340 as shown at the left end in FIG.

That is, this detection section 340 is connected to a power source via a detection circuit front section 341, but such a circuit includes a detection circuit rear section 342, an auto-reverse electromagnetic plunger 140 (see FIG. 12, etc.), and an eject plunger. 234 [1st
] between them, a one-way start switch SW1, a switch SW2 for detecting the tape feeding direction displayed in the push buttons 201 and 202. SW2'
, a changeover switch SW as a playback mode selection means that is switched by operating the continuous/discontinuous switching operation section 204 described above;
3. Switch S as means for detecting whether automatic reversal continuous recording is possible or not
W4, reverse recording selector switch SW5' which is switched when recording is possible in the forward direction and the recording button 203 is operated
The partition wall 306 has a recording circuit changeover switch (not shown, provided on a printed circuit board, etc.) which is interlocked and switched by a movable piece 316 provided on the partition wall 306 as shown in FIG. Operation unit 20
Program switches SW7, which are activated by the channel switching operation by the program switch 5, are arranged as shown in the figure.

However, to explain the operation of the device with such a configuration, the drawer body 200 is pulled out, the cassette 50 is inserted, and the drawer body 200 is inserted again to form a one-stage locked state, and playback is performed by operating the operation unit 204. When the drawer body 200 is further inserted and the protrusion 238 is locked in the locking part 236 while the continuous or discontinuous state is selected, the power switch is turned on, and the switch SW1 is momentarily turned on and off, and the above-mentioned When the tape is in the rewinding state in the running state before loading, the plunger 140 operates to switch the tape forward to feed it in the forward direction to obtain one-way starting performance, and also to provide regeneration to the motor and others. All the necessary circuits are closed to start recording and playback, and a signal is given to the front stage part 341 of the detection circuit by rotating the drive shaft 18 and rotating the detection part 340 by one drive of the motor as described above. The output thereof is turned OFF, the subsequent stage section 342 is also turned OFF, and each switch sw-5w7 is also in the state shown in FIG. 16, so that the desired reproduction can be performed continuously or discontinuously.

However, when such playback progresses and the end of the tape in the cassette 50 is reached, the rotation of the conductor ring 2800 of the detection section 340 is momentarily stopped, an ON signal appears at the output of the detection circuit front section 341, and the potential changes to the rear section 342. As a result, the latter part 342 of this detection circuit is turned ON, and the plunger 1
40, switch sw3. A current flows through sw, , ' and the rear section 342 to operate the plunger 140 and switch each mechanism and electric circuit so as to drive the plunger 140 from the forward feeding state to the rewinding direction.

However, in such a case, the above-mentioned switching operation section 20
If 4 had been made discontinuous, the switch would have been switched to the reverse direction as described above, and at the tape end of this rewinding and playback operation, the switch SW2' would have been closed to the upper contact in the figure, so the plunger 234 would have been closed. energize the
The locking of the hook portion 236 to the protrusion 238 is released, and the drawer body 200 is pulled out to the first stage loading state (i.e., standby state), and the main switch is thereby turned OFF.
be done.

When the program switch SW7, which is switched by the operation unit 205, is operated during playback as described above, the detection circuit latter part 342 is turned on for a time determined by the time constant determined by the resistor R and the capacitor C, and in the case of continuous playback, the switch S
W2. The plunger 140 is operated regardless of SW2' for continuous regeneration, and when switch SW3 is discontinuous, 1
During the cycle, switch SW2' turns plunger 140,2
34 and then turn on sequentially and eject after auto-reverse.

In addition, when the recording changeover plate 21 is operated, the switch SW5 is turned off, and the switch SW5' is switched upward in the figure to be connected to the switch SW4. In this state, the inserted cassette 50 is turned off. Projection piece 3
As mentioned above, the switch SW4 is switched depending on the presence or absence of the protruding piece 351, and when the protruding piece 351 is present due to the bullet piece 253, the switch SW4 comes into contact with the lower contact as shown in FIG. If not, it will come into contact with the plunger 234 side on the upper side in the figure.

That is, in the former case, the switch SW2' operates the plunger 140 once in the normal feeding state as shown in the figure, and then the plunger 140 is activated in the reverse feeding state, and the switch SW2' is switched to the upper contact point shown in the figure. 234 is activated to perform auto-ejection, and recording is performed in forward and reverse feed conditions.In addition, in the case of the latter stage, auto-ejection is performed at the tape end signal after recording in the forward direction. .

According to the present invention as explained above, a 2-reel type cassette is used, and playback and recording are automatically continued using an auto-reverse system.
When playing back the tape, it is possible to select either one-cycle playback or automatic continuous playback as appropriate, taking advantage of the advantages of the auto-reverse method, and realizing preferable playback operations according to the user's wishes. When recording, it determines whether the installed cassette is recordable or not and disables the recording operation itself, or disables automatic reversal and continuous recording to completely prevent duplicate recording, and also immediately responds to the recordable status of the installed cassette. This invention enables a recording operation that appropriately utilizes the advantages of the t-) IJ verse system, and is an industrially highly effective invention.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a partially cutaway perspective view of the top cover of the tape end according to the present invention, and FIG. FIG. 3 is a perspective view of the push-up lever and interlocking piece showing the pack in its pulled out state, FIG. 4 shows its cassette loaded state, and FIG. 5 shows its state. FIG. 6 is a similar perspective view showing the operating relationships in the deck loaded state, FIG. 7 is a plan view of the interlocking piece, the sliding piece with the push button, and the brake piece, and FIG. FIG. 9 is a plan view showing the operating state of the sliding piece and the brake piece; FIG. 9 is a perspective view showing the disassembled state of each sliding piece and the sliding plate;
Fig. 10 is a perspective view showing the state in which the cassette is attached to the drawer-like member, and Fig. 11 is an exploded view showing the relationship between the sliding member, the first and second operating members, and each conductive member disposed thereon. FIG. 12 is a plan view showing the arrangement relationship of the conversion gear body and each member related thereto on one end side of this sliding member, and FIG. Fig. 14 is an explanatory diagram schematically showing the arrangement and driving relationship of each part in the sliding member portion, and Fig. 15 is an explanatory diagram showing the fast-forward switching operation relationship. 16 are schematic diagrams showing the electrical circuit configuration of the device according to the present invention. The main reference numerals in these drawings are as follows. 1 is a motor, 14 is a pinch roller holder, 15 is a pinch roller, 16 is a capstan shaft, 50 is a cassette, 14
0 is an auto-reverse plunger, 234 is an auto-eject plunger, 280 is a conductor ring for detecting tape ends, etc., 281 is an elastic contact piece thereof, and these form a detection part 340, and 341 is a front stage of the detection circuit. 342 is the rear part, SWl is a one-way start switch, SW2 is a switch which is a tape running direction detection means together with SW2', SW3 is a switch which is a playback state selection means, SW4 is a switch which is an automatic reversal continuous recording permission/impossibility detection means, and SW5. ' indicates a switch which is a recording operation means.

Claims (1)

[Claims] A drive shaft is attached to each reel of a 12-reel type cassette, and an interlocking system using a drive source such as a motor is installed on each flywheel having a capstan shaft and the drive shaft, and each In the device in which the interlocking relationship between the flywheel and the drive shaft is switched to reverse the tape running direction and perform recording or playback, the switching operation is performed by a tape end detection means of the cassette and a detection signal from the tape end detection means. A playback mode selection means for automatically ejecting the cassette or automatically reversing the tape running direction via a recording/playback changeover switch and a means for detecting whether automatic reversal continuous recording is possible or not are arranged in parallel in the operating circuit. , furthermore, a tape running detection means is connected between the eject detection side of the playback mode selection means and the automatic reversal continuous recording enable detection side of the automatic reversal continuous recording enable/disable detection means, and the playback mode selection means is connected to the eject detection side and the automatic reversal continuous recording enable/disable detection side of the playback mode selection means. A cassette-type tape player characterized in that a recording operation means for controlling and operating the cassette-type tape player is connected.