JPS589252A - Auto reverse mechanism of cassette tape player - Google Patents

Abstract

PURPOSE:To perform auto reverse operation accurately with relatively simple constitution, by engaging a rotary displacing member, provided to an intermittent gear, with an auto reverse switching member, and sliding the switching member through the rotation of the intermittent gear. CONSTITUTION:In the opening 81 of an auto reverse switching member 8, an intermittent gear 150 having a rotary displacing body 155 which engages the opening is arranged. On the circumferential side of the gear 150, a gear 152 engaging an intermedium gear 161 is formed and notched partially. The gear 150 is at a standstill while an operation projecting part and a tail part 146 engage it at an interval of 180 deg.. When a plunger 140 operates with a tape end signal, an operating member 142 swivels counterclockwise to disengage the projecting part 156, and the intermittent gear 150 is driven by a motor to engage the gear 161. Consequently, the rotating displacement body 155 is rotated by 180 deg. to slide the switching member 8, thus performing switching in a feed direction. Thus, the auto reverse operation is performed accurately.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the invention of an auto-reverse mechanism in a cassette-type tape player, which is capable of reversing the running direction of the tape and playing it with a single sound. This is a relatively simple and low-cost structure that allows accurate switching of the tape running direction.

A type of tape player in which the tape run is automatically reversed at the tape end signal or the like is conventionally known as the ``auto release'' method. i.e. each tape end”′
It can be said that it is a highly advantageous mechanism in practical use because it allows automatic and continuous playback of the tape or sickle sound without the need to reverse the tape feeding direction one by one. The switching operation applicable to the auto-reverse system uses a special switching operation driving mechanism such as an electromagnetic plunger to perform the reversal switching. In addition to requiring wiring for the electromagnetic plunger, special cams and other intermediate operating members and their backward operating members are installed because it is common to switch between the two using only the forward motion when the electromagnetic plunger is energized. It is necessary to do so, and the configuration thereof must be considerably complicated.

In addition, the operation requires a considerable amount of output because each member is instantaneously switched as described above, and there is a disadvantage that the plate switching operation is shocking. It is unavoidable.

The present invention was developed after consideration to eliminate the disadvantages of the conventional ones as described above, and it realizes auto-reverse switching operation using a motor, which is an indispensable drive source in tape players of this type. Therefore, the configuration can be made relatively simple and the cost can be preferably reduced as shown in FIG.
However, it is possible to smoothly realize reliable switching operation with a large operating force due to the 4-motor drive.

Embodiments of the present invention will be described with reference to the attached drawings.The external appearance of one example of a nine-tape player equipped with the mechanism according to the present invention is as shown in FIG. 1 with a portion of its top cover cut away. A decorative frame 3 is provided on the front of the outer casing 300.
01 and the top N has a top cover $02, and the height and size of the decorative frame 301 are similar to that of a conventional rear jet tape cartridge. It is the same as a tape player using a rear jet type tape player (To#), so it is obvious that it can be installed at the landing position of a vehicle in the same way as this rear jet type tape player. According to this embodiment, a ninth opening 303 for opening the drawer body 200 is formed on the front surface of the casing 1, and an ejecting operation section is provided on both sides of the opening 3(3). 304
An operation section 305 for adjusting the volume and sound quality is provided.
Further, inside the housing 1, partition walls 306 are provided on both sides,
A top plate 3◎1 is installed on the top surface of these partition walls 306 and 306, and the two sides of this top plate 307 have a slightly lower terminal plate mounting area 310 due to a bent part 311, and the above-mentioned method is provided. Both sides of the partition wall 30B and $08 are storage chambers 308 and 3.
I have completed 09.

The state in which the drawer body 200KIII is installed and removed between the partition walls 30g and 301i as described above and the decorative board 206 on the front side of the drawer body 200KIII is removed is as shown in FIG.
The board 2011, which has been bent into a shape, is rotated by the side control so that the hanging walls 2011 and 209 hanging down on both sides are rolled all over the place, and the faWk operation is carried out by riding on the child 98.
For clarity, please also refer to <Forwarding> Direction Selection Buttons 201, 20
2. Brass sound button 203. Continuous/discontinuous switching operation section 204
And a decorative board 20 such as the channel switching operation part 205
iiK is placed in an exposed manner. However, a spring 1s is arranged on the upper surface of the substrate 208 and the side of the substrate 208 as described above, and
A sliding plate 210 that is movable with a trochanter 20 is attached to the upper side of the sliding plate 210, and a head 10 for both bell sound and reproduction. Erasing heads 11, 12 and springs 13 are disposed and energized, such as nine pinch roller holders 14 are arranged in a row as shown, and nine pinch rollers 15 attached to the holders 14 are mounted on the substrate 208. It is provided in a protruding manner and is placed opposite to the nine shafts 11iK so that it can be appropriately pressed. A large opening 211 is formed in the center of the slide @ 210 to expose the capster/shaft 16 of ζ and the positioning ring 1T of the cassette 50, and the drive shaft 18 which is used as the reel shaft of the cassette 50 is formed. .18 is also the aneurysm plate 210 respectively.
It protrudes from the opening 212 of. Support members 213 are provided oppositely on both sides of the front of the substrate 21) II, and a rotating ring 214 is rotatably horizontally suspended between the supporting members 213 and 2130, and the supporting member 213 of the rotating ring 214) Husband engaging pieces 215 are attached at the nine positions that protrude outward, and these retaining pieces 215 bend their tips to form laterally centered nine retaining parts 216. Fix the Kti stopper 217, and attach the spring 2 to this stopper 217.
18 is arranged so that the engaging portion 216 as described above is always biased downward K11m1, and this rotational force is stopped at a predetermined position by the stopper 211 being pressed against the surface of the board 208. It is made up like this. Furthermore, a motor 1 is attached to the front of one side of the rotary wheel 214, and serves as a tape drive, an auto-reverse drive, and other drive sources as will be described later.

Drive shafts Ill, III and positioning pin y1 as described above
7 is a cassette 500 loading/unloading area, and a lever 91 is installed in front of the cassette loading/unloading area to push up the cassette 50. That is, this push lever 91 is used to load/unload the cassette. It is attached to the front of the area and pivoted to the side box of the nine support seats, and one end of it is loaded with nine cases).
An engaging portion 93 that engages with the bottom surface of 50 is bent and formed,
Moreover, at the other end there is a drawer body 20040 as described above.
An interlocking piece that works to engage and disengage when removing bales! A locking center portion 6 is formed that has a locking effect on the center portion s4 that engages and disengages from I5 and the sliding plate 210. The intermediate part of the interlocking piece ($5) is pivotally attached to the upper surface of the support piece (9) as shown in Figure 3.4, and its tip engages and disengages with the protrusion 94 as described above. A retaining portion 1s4 is formed by bending and hanging down, and at the other end, as shown in FIG. The folding part 113 is attached, and the structure of the inclined folding part 1s3, the floater 1@201m part, and the above-mentioned cassette pushing up and sliding plate locking function related thereto will be described in detail in Chapters 3 to 3.
Details are shown in FIG. , that is, first of all, its composition *
The sliders 1 and 2 are inclined on their lower surfaces, and the guide portions 1 and 6 are
is formed, and the nine plastic resin parts are also Q, and the interlocking piece s
Between S and the support seat 9, there is a tension spring 1s5, and since there are 9 pieces, the interlocking piece s5 always rotates with a clockwise rotational force, and furthermore, the push-up lever 1 and the supporting seat 9 are connected to each other. A winding strip 117 is interposed between the lever 11 and the right side of the push-up lever 11 when viewed from the front, that is, the above-mentioned 9-lock center portion 96, which always receives an operating force that pushes it downward. It is structured as follows), 1!18. III indicates a column that stably supports the support seat 9 on the substrate 2011.

However, regarding the effects of such a structure, see the third section.
In the case of commuting as shown in FIG.
As shown in the figure, the engaging part s3 is pushed up and in good condition, and both the central part 94 and the engaging part 194 are disengaged. When an object is dropped, the engaging portion 93 of the push-up lever s1 is pressed down to the state shown in FIG. 4, and the protrusion 94 is pulled up against the elasticity of the spring spring 191 and engaged. When it is locked to the part 114, the locking protrusion 3.01 is in the ζ0 state.
1. The sick state with respect to the moving plate 210 is also released, and when the drawer body 2e is pushed in after the Elk cut 50 is completely attached, the outer image of the inclined folding portion 11B and the outer image of the guide portion 1s. and 1Jlh1! The slider 1-2 is pushed out and entered in the direction of the disclosure arrow while forming the relationship shown in 5th laK, and at this time, the shaft 111B14 and the engaging portion
4, the interlocking piece s5 acts reliably as a fixed member, and there is no chance for the engagement to be released, but after the drawer member 200 is pushed in and the required regeneration is completed This drawer body 2 (10) is extracted and ejected from the pigeon house with a 6th
As shown in the figure, the above-mentioned folding part 193 and the guide part 1$6 are welded together on both sides of the slanted sides. 311 and functions semi-rigidly, the interlocking piece 95 will now pull the spring 185! l) It must be rotated counterclockwise against the force as indicated by the arrow in said no. The engagement relationship between the protrusion 94 and the engagement portion 194 is released, and the winding strip 184 acts to push down the protrusion s4 of the push-up lever s1 and the locking center portion 96. , locking protrusion 96
is engaged with the sliding plate 210 to lock the ξ angle.

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 rear pieces 227, 228 of the mounting seats 225, 226 are exposed. Further, the top plate 307 has other openings 229 and 230.
is formed, and a presser trochanter 231 is disposed in one of the openings 229, and the drawer body 20@0 is inserted into the opening 229.
), and the other O opening 231
) K Hiro power switch 232 is arranged, and the detection part body 233 is attached to the tip 114 of the bullet piece 232a in the middle thereof, and the detection part body 233 is fitted into the drawer body 200 pushed in as described above. Cassette) 50F) Central Sea
Terminal board 2
21 and the contact piece 227, the power switch 232 is closed while a contact state is first formed and maintained. Furthermore, top plate 3
At the center of 070 is a plunger 234 as shown in FIG.
is attached to the rod and forms a distal end Kn locking portion 236 of the companion piece 235, and the proximal end is pivotally attached to the 23
7, and such an engaging/disengaging piece 235 is attached to the drawer body 200.
The protrusions 23@ on the base plate 210 are engaged with each other at the final push-in position of the front drawer member, and the plunger 2
By energizing 34, the bonding relationship with 34 is released.

As is clear from FIGS. 7 to 9, on the bottom of the above-described nine bases 1 [20], the second slide plate 3 is attached to the feed direction selection buttons 201 and 202, together with the first sliding piece 3. Each of the third sliding pieces 4.5 is overlaid and broken, and these three
Sliding pieces 3.4, SKa No. 10 slots 31.41, respectively.
51, a second elongated hole 32.42.52, a third elongated hole 33', 43.5'3, and a 40th elongated hole 34.44.54 are formed, and the second and third sliding pieces 4 .5゛ has a folded part 4 on the side.
5.55 is provided, and a center piece 36 is provided on the side of the front end of the first sliding piece 3, and as shown in Fig. long hole °24
As shown in Figure 1s1, the inner piece is adapted to engage with a central portion 123 assembled in the inner piece. 2- on each side edge of
) are located at the center, and these inclined protrusions 38.48.58' are all provided on the bottom surface of the sliding plate 210 and act on the nine trochanter 40. Sliding plate 2
1 (I is pushed out against the spring 1-1 ISO elasticity.' At the tips of the second and third sliding pieces 4.5 □ On the sides, there are centering pieces 4 @ and S @. Center part and switch operation center part 4
1.5T is bent at the end, and springs 15.74 are attached to the spring mounting portions 49.59 for these sliding pieces 4 and SK. On the other hand, the work "Shikata", which returns to the center on the front side, is emphasized.

A brake piece 6 is further attached to the lower surface of the 30th sliding piece 5.
- Guide hole 61.61 and guide structure 6 orthogonal to the a direction
2.62 is formed, and a pressure receiving part 63 is provided in the middle part thereof, and the brake parts @4 and I4 of 2-) are similarly worn on the other part 4 and 4, respectively. It is formed by For the brake 1[1iK, as shown in Fig. 7.8, a tension spring @5 is provided and acts to pull the inside of the pressure receiving part 63 inward. is pivoted @7, and the actuating portion 611, which is one end of the nine brake actuating pieces 66, is faced), and this brake actuating piece @l! A spring 6- is arranged at the pivot point 1i7 of Ka and is configured to follow the pressure receiving part 83,
Further, instantaneous operation parts 4m and 5m are provided on the sides of the second and third sliding pieces 4.5 formed at the other end of the brake actuating piece 66 and able to press against the nine protrusions 70. The sliding movement of the brake plate 6 gives an instantaneous action to the brake actuating piece 66, thereby causing the brake disc 6 to move
4.@4 is instantaneously applied to the co-rotating wheels 110 attached to the drive shaft 18 at 80 m of friction material such as rubber around the periphery of i to stop their rotation, and then released again. ing. A balance operation piece 1 is provided in front of the play plate 6, and is attached at a pivot hole 72.An arm portion T3 is formed on this balance operation piece 1, and a fork end 11 is formed on the balance operation piece 1. In addition, the springs 74 and 75 of the same strength are provided oppositely on both sides of the pivot hole T2, and as shown in FIG. The interlocking piece 76 is located at an angle of 800 mm and is formed at one end of the moving piece 76 to engage with the nine-axis rod 711.
7 can be mounted freely and rotatably, and is it a 4-crest interlocking piece? 1iK
An elastic member 1s having the same strength is provided symmetrically between the fixing pin 711m and the fixing pin 711m.゛Above 9.7.
Rotating wheels i o, g shown in Fig. 8.

In addition, as shown in FIG. 11 and also with reference to FIG. 14, a 1) 0 automatic reverse switching member 8 is provided on the bottom side of the drawer body 200. The sliding member 111 has first to fourth openings 81.82.83.84.
is arranged as shown in the figure, and a wire diameter moving piece II6 is positioned in a recessed part 85 formed in the middle part thereof, and a wire diameter moving piece II6 is formed in the same manner as this moving piece 86 and the above-mentioned auto reverse switching member 8. A spring 87 having the same strength is stretched between the two fixed points 8m1 and 'III, respectively, and the two fixed points 90 and 90 are formed on the other side of the auto reverse switching member 8.
and O) Spring ss and 5s of the same strength are also located between the Q perspective switching member 8 and the 9th first operating member 180.
The engaging protrusion 186 bent at the tip of the second operating member 185 which is arranged opposite to the first operating member 180 is provided at the base end of the first operating member 11100. It is configured to engage with the gate plate 181. Also the first
A transmission wheel 183 is rotatably provided on the nine support shafts 182 vertically disposed on the operation member 180, and another transmission wheel is provided on support shafts 1117 and 1118 installed on the second operation member 185. 184 and a gear shaft 18s are each provided rotatably. Furthermore, the central portion 1 of this second member 185
Another engaging protrusion 179 is bent downward and formed between 86 and the support shaft 181. It is designed to be locked against. A gear portion 177 of a shaft is formed on the transmission ring 184, and during assembly, this gear portion 171 is engaged with the gear shaft 18s described above.

Regarding each transmission wheel 183184 and gear shaft 1asm as shown in FIG. 11, the intermittent gear body 150 and intermediate gear 160 as shown in FIGS. 11 and 12 are also shown in FIG. The openings 81 and 82 are arranged in the first and second openings 81 and 82, respectively. That is, the intermittent gear part 150 has arc-shaped partial notches 151, 151 facing each other on its circumferential side, and the gear part 15 on the circumferential side between these partial notches 151, 151.
2.152 is formed, and the cam center part 15 is formed on the lower surface.
The second intermediate gear 1 forms an annular protrusion 154 having 3
60 engages with the gear portion 152 or has a notch 151 at the bottom portion.
It has a gear part 161 that can be depressed into a part to release its interlocking relationship, and a pulley part 162 is integrally molded coaxially with this gear part 161. Furthermore, a rotation dominant part body 155 is integrally sanded on the upper surface of the intermittent gear part body 150, and a plunger operation center part 15 @, Is is provided oppositely to the rotational displacement part body 155 at an interval of 180'. These operating center portions 156 act on an operating member 142 provided for a plunger 140 separately attached to the bottom surface of the base plate 2080. That is, the plunger 140
For the suction part 141, the suction plate 14 of the operation member 142
3 is positioned at the center of the operating member 142, and the operating member 142 is pivotally supported on the bottom surface of the base plate 208 by a pivot shaft 144, and the suction plate 1 is always moved by the tension of the spring 145.
43, such a pulling plate 14
The stopper is arranged at a constant distance from the suction part 141 provided on the three-layer base plate 208, and is also engaged with the plunger operating protrusion 156 which is attached to the other side of the operating member 142. The mating tail end 146 and the rotated operation part 156 form pressure receiving parts 147 that receive the action of pushing the intermittent gear body 150 outward.

Further, the above-mentioned nine rotational displacement member 155 is fitted into the above-mentioned opening 81, so that the rotational displacement member 15
(c) The intermittent gear body 150 having 5 is rotated.
Therefore, the auto-reverse switching member $ is configured to be moved and operated in its length direction, and a board 208Kjl is attached to the annular central portion 154 according to the company, and a forward rotation direction detection switch 1480 and a bullet piece 14S are attached. The cam protrusion 153 allows the detection switching operation to be carried out as appropriate.

That is, the intermittent gear body 1 shown in FIGS. 12 and 13 as shown in FIG.
50 etc., as is known, the plunger 140 is actuated by the energization of the detection circuit that detects the end of the nine tapes wound around the cassette, and the suction plate '1
43 by the suction part 141, the operating member 142 moves counterclockwise and the tail end 146 as shown in FIG.
The intermittent gear part loses its locking relationship with the operation center part 156, and stops rotating in the deviated state due to the load difference between the nine strokes 87 and II caused by the displacement of the auto-reverse switching member 8 in the locked state. The body 150 is momentarily moved to engage the drive gear 161, and is automatically driven by the motor. This clear operation central part 156 line - operation member 14 during movement.
By pushing out the pressure receiving part 147 of No. 2 to the outside, the gear part 161 can be accurately formed without being affected by residual magnetic force or other influences.
The engagement between
@Rotate and slide the switching member 8 to automatically reverse the feeding direction and perform IJ perspective operation.

The overall interlocking relationship between the respective transmission wheels and gear members as described above is summarized in FIG. Two flywheels 165 are installed in the fourth openings 83 and 114, respectively.
．． 166 is provided, the center axis of which is the substrate 20s described above.
It forms the upper capstan shaft 16. That is, the belt 164 that is suspended around the drive shaft of the motor 1 is passed around the intermediate gear 1600 pulley portion 162, and then is attached to one of the flywheels 1.
65, and then another flywheel 16
6, the hook is rotated so as to return to the driving shaft of the motor 1, and, as an example, drives these rotating members 160, 165, and 166 as shown by arrows in the figure. In such a configuration, the flywheel 165.1g1i is used, and pinch-up and take-up are performed by separate flywheels, respectively, as shown in Figure 15, so that rotation is achieved by dividing the rotational load, thereby stabilizing the entire mechanism. In addition, in order to ensure that the mechanical noise of the take-up is not transmitted to the capstan side, and to ensure that the belt 164 is properly routed around the flywheel 165, a nine intermediate pulley is provided. The unit 162 is used to perform a conversion switching operation using a rotary cam, and when the rotational displacement unit 155 is rotated by the rotation of the intermittent gear unit 15O4D as described above, the switching member moves to the right side as shown in the figure. Or, it is the beak that is moved to the left and performs the auto-reverse switching operation.

Transmission wheel 183.1 on the ninth, eleventh, and twentieth operating members 1110, 1115 deposited with 81, $1 and ss, 8I
@471 and gear shaft 1 $9 are the switching member $ as above.
Depending on the amount of movement, the transmission wheel 183 is moved to the right or left in FIG.
．． 171i, the rotation is transmitted by the above-mentioned energization.
Transmission wheel 1 with belt 163 suspended between it and 83a
84 drives a gear shaft 1119 with its gear portion 111, and a small wheel portion 11t coaxial with this gear shaft 18s! I[1st
1] is the movement of the second operation part body 185 as described above, which comes into contact with either the left or right co-rotating wheels go, and drives the rotary ring 80 that is in contact with it. 80 or 80 is left, depending on the drive shaft 18.
．． As already mentioned, it is possible to select either the forward feed or reverse rewind direction for the tape (9 cassettes) 50 inserted in the cassette 18. Depending on whether the continuous or discontinuous operation section 2 (14) is operated, the tapes of the nine cassettes 50 loaded are played alternately and continuously by the auto-reverse operation, or the tapes of the first and third tracks are played back alternately. channel and second
, the second channel is reproduced by the fourth track, and then stopped.
is still attracted and the turtle operating member 1420 tail end 1
46 is forcibly removed by applying the action of the operating protrusion 156.

In the nine embodiments described above, the rotational displacement body 155 employs a circular protrusion eccentric to the intermittent gear body 150, that is, the rotational displacement body 155 has an eccentric cam shape. However, this rotary displacement member 155 is simply rotated by a drive source, acts on the elongated engagement hole 81 of the auto reverse switching member 8, and slides it. It is clear that the operation is obtained at the eccentric protruding end of the several rotation displacement member 155, and the other parts are 11 degrees reinforced with the intermittent gear member within the thickness. Warehouse rotation displacement body 1
5Sa Depending on the case, it can be of any type with an engaging part protruding from the part corresponding to the eccentric protruding end. The good news is clear. Further, by doing so, the diameter of the rotational displacement member 155 can be reduced, and the engagement hole 81, which is formed near the center of rotation of the intermittent gear member 15G, can also be made narrower.

The above-mentioned Figure 15 shows a configuration in which a rolling element T1 is further arranged in the configuration shown in Figures 1'4 and 9 to achieve the purpose (early retreat), that is, the configuration shown in Figure 1'4 is already achieved. As shown in the figure, there is a rotary ring go, and a hook interlocking piece 7 is attached to the go part.
6 is provided, and this interlocking piece 16 is formed at the tip of the balance operation piece 7 and is connected to the shaft rod 18 with respect to the nine fork portions 11.
The balance operation piece 7 engages with its pivot hole 7.
2 and each fourth elongated hole 34.44.5 in the first to 30th sliding pieces 3.4.5 as shown in FIG. 9 by means of a round shaft.
54, therefore, the interlocking piece 76 can be operated by sliding operation on these sliding pieces 3, 4, and 5. That is, when the feeding direction selection button 201 is pressed to move the 20th sliding piece 4 forward, the nine threads T5 that are attached one step are extended and the interlocking piece 1 is moved to the left in Fig. 7. Therefore, the rolling element 11
The flywheel 165 is in contact with the rotating wheel 8 (IK) on the right side of the figure, and the rotation by the skeleton flywheel 115K is directly transmitted to the same rotating wheel 110 on the right side. When the direction selection button 202 is pressed to move the third ms piece S forward, the spring T4 attached to the other side extends and the balance operation piece T moves into its pivot hole 7.
2 in the clockwise direction in FIG. 9, thereby moving the interlocking piece T6 to the right in FIG. It is brought into contact with the left co-rotating wheel 80, and the rotation of the flywheel 1660 is directly transmitted to this rotary wheel 110 to drive it, thereby achieving an effect on early retreat.

It should be noted that when the selection buttons 201 and 2020 are operated, braking by the Hiro Play Life Piece 6 is instantaneously applied.

As shown in No. 1011, two U-shaped notches 350 are formed in the Confucian straw of Kasetsu) 50, and these notches 350 are mounted on the drawer body 200. The second side is first brought into contact with the surface of the sliding plate 210 and then slid to the right in FIG.
A holding piece 250 formed at the middle part of the substrate 2080@wall 2011 and planted at the nine-mouth 242 part as shown in the figure.
10 of the cassette 50 in FIG.
1i8KIE are combined to form a stable nine-mount relationship. On the side of such a board 2011, there are bullet pieces 252 and 253 attached with the upper end folded inward so as to be in contact with the surface of the nine cassettes 500. Immediate response to the center piece 351 in the υ-shaped notch 350, sand was thrown at the 9th position, and these bullet pieces 25
3Ka is equipped with a switch SW4 as described below, so it is fitted as described above and has 9 cassettes)
50 is sooooj in normal conditions! F$51 has 25 bullets
2. Since the 258 is scissored with the bent part 254 pushed out, it can be used freely by forming the necessary circuits including erasing, but if the recording of the tape in the cassette stI is permanent. If the recording track is stored in a round shape, the center piece 351 that corresponds to that recording track is broken off, and in this way, 1! Even if the cassette 50 with the piece 351 broken off is installed as shown in FIG.
3 is not pushed out, the switch SW4 provided in series with these Kll is not operated, and therefore, at least an erasing circuit is not established due to these Kll, and even if the tracks are accidentally guided to the erasing head surface 11, 12, those tracks are not pushed out. recordings will not be erased.

A schematic electrical circuit configuration according to the present invention is shown in FIG. That is, the conductor 1!2110 is attached to the aforementioned rotary ring 80 formed coaxially with one drive shaft 18, and the elastic contact piece 281 is disposed on this conductor ring 280. A detection unit 340 as shown in FIG. That is, this detection section 340 is the detection circuit front section 3.
41, and this circuit is equipped with a detection circuit rear section 342, an auto-reverse electromagnetic plunger 140 [see Fig. 12, etc.], and an eject plunger 234 [see Fig. 1, etc.]. Between them, there is a one-way start switch 8w1, and a switch 8W for detecting the tape feeding direction displayed in the push buttons 201 and 202.
,,BW,', the above-described continuous, discontinuous switching operation section 20
A switch 8W4 serves as a means for selecting a playback mode which can be switched by the operation of 4, a switch 8W4 serves as a means for detecting whether or not recording is possible in the reverse direction, and a recording button 203 is used when recording is possible in the forward direction.
a reverse recording selector switch SW,' which is switched when the bell tone function is activated, a manual program function stop switch SW during the bell tone function, and a partition wall 3 as shown in FIG.
It has a recording circuit changeover switch (not shown) on a printed circuit board that is interlocked and changed over by a movable piece 316 that is slidably provided on the 06, and is activated by the pause switch 8w6 and the channel changeover operation by the channel changeover operation part 205. The program switches BW and BW are arranged as shown in the figure.

However, to explain the operation of this configuration, the drawer body 200 is pulled out, taken out, the cassette (5G) is loaded, and then the drawer body 200 is inserted again to form a first-stage locked state, and the operation is performed. When the drawer body 206 is further inserted and the protrusion 238 is locked in the locking part 236 with the continuous or non-continuous playback state selected by the operation on the section 204, the power switch is turned on and the switch sw1 momentarily turns 0N. -OFF operation, and when the rewinding state is in the running state before loading as described above, the plunger 140 is operated to switch to feed the tape in the forward direction to obtain one-way starting performance,
Further, all the necessary circuits for playback for the motor 1 and others are closed to start recording and playback, and the drive shaft 18 is rotated by the drive of the motor 1 as described above to rotate the detection unit $40. The signal is given to the front stage section 341 of the detection circuit, its output is turned OFF, and the rear stage section 342 is also turned OFF.
The switches 8W, .about.8W are also in the state shown in FIG. 16, and the required reproduction can be performed continuously or discontinuously.

However, as such playback progresses, when the end of the tape in the cassette 50 is reached, the rotation of the conductor 11280 of the detection section $40 stops momentarily, and the output KON of the detection circuit front section 341
When the signal is requested, a potential is supplied to the rear stage section 342, and this detection circuit rear stage section 342 is turned ON, and the plunger 1401 switch sw, sw,' and the rear stage section 342 are turned on.
A current flows through the plunger 140 to operate the plunger 140, thereby switching 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, if the aforementioned switching operation section 204 had been made discontinuous, it would have been switched to run in the reverse direction as described above, and at the tape end of this rewind playback operation, the switch 8W,' would be connected to the upper contact in the figure. Since it is closed, the plunger 234 is energized and the protrusion 23 of the hook portion 236 is closed.
11 is explained, the drawer body 200 is pulled out to the first stage loading state (ie, standby state), and the main switch is thereby turned off.

The program switch sw? which can be changed by the operation unit 205 during playback as described above. is operated, the detection circuit rear section 342 operates for a time determined by the resistor R and the capacitor C, and in the case of continuous operation, the plunger 140 is operated regardless of the switches 8W, 8W, and '. If the switch gw is discontinuous and plays continuously!
In the cycle, switch 8w,' is plunger 140,2
34 and is turned on sequentially and ejected after auto-reverse.

When the recording switching plate 21 is operated, the switch SWs is turned off, and the switches sw and ' are switched to the upper side in the figure to be connected to the switch 8W. 9 pieces) 50 pieces 3
As already mentioned, the switch 6w can be switched in nine ways depending on the presence or absence of the bullet 51, and when the bullet piece 351 is present on the bullet piece 253, the switch SW4 contacts the lower contact as shown in FIG. If there is no protruding piece 351, 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 sw,' operates the plunger 14G once in the forward feeding state as shown in the figure, becomes a reverse feeding state, and the switch S island' is switched to the upper contact point shown in the figure. When the end of the tape is detected, the plunger 234 is actuated to auto-eject the tape, and recording is made in the forward and reverse feed states.In the latter case, recording is made in the forward feed direction. Auto-ejects at the tape end signal.

As explained above, when the auto-reverse switching mechanism in the cassette tape player of the present invention is used, the desired switching operation can be performed by motor drive.゛The auto-reverse switching mechanism is operated and automatically switched by a rotary deflection member that moves integrally with the intermittent gear body, which eliminates the complicated switching operation mechanism and special operation required in the past. It is industrially effective because it does not require a mechanism and can perform smooth switching operation with a relatively simple and low-cost configuration, and also achieves reliable and shock-free operation with the large operating force generated by the motor drive. This is a great invention.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, in which FIG. 1 is a partially cutaway perspective view of the top cover of a tape player according to the present invention, and FIG. FIG. 3 is a perspective view of the push-up lever and interlocking piece, showing the pulled-out state, FIG. 4 shows the cassette in its correct state, and FIG. Figure 6 is a similar perspective view showing the operating relationships when the deck is in the inserted state, Figure 7 is a plan view of the interlocking piece, the sliding piece with the push button, and the brake piece. Figure 8 is a plan view showing the operating state of the sliding piece and brake piece, Figure 9 is a large oblique view showing the disassembled state of each sliding piece and sliding plate, and Figure 10 is a diagram showing the state of operation of the sliding piece and the sliding plate. FIG. 11 is a 9-sided view showing the state in which the cassette is installed, and FIG. Figure 13 shows the arrangement of the conversion gear body and the various parts connected to it at one end of the sliding member, and Fig. 13 shows its operational relationship, and also shows a side view of the conversion gear body. and the 14th
Figure 1511 is an explanatory diagram schematically showing the arrangement and drive relationship of each part in the sliding member portion, No. 1511 is an explanatory diagram showing the fast forward switching operation, and Figure 16 is an electrical diagram of the device according to the present invention. FIG. 2 is a schematic diagram showing a typical circuit configuration. The reference numerals appearing in these drawings are as follows: 1 is a motor, 8 is an auto-reverse switching unit, 14 is a pinch roller holder, 15 is a pinch roller, 16 is a capstan shaft, 50 is a cassette), 14G is a derailleur/jar for auto-reverse, 150 is an intermittent ear unit, 155 is a □ rotational displacement part, 234 is an auto eject plug/jar, 28
0 is a conductor ring for detecting t such as Tezoe/de, 28
Reference numeral 1 denotes an elastic contact piece thereof, which forms a detection section 340v, 341 a front stage part of the detection circuit, 34'2 a rear stage part,
8W is a switch that is a selection means, and sw,' is a switch that is an operation means. Patent applicant: Tarariono Co., Ltd. Inventor: Isao Hase, A-Tsemifu Patent attorney: Haku Ill ---p! I-
tJ纂 ”' II l /4 @ Den / δ Chi procedural amendment and @ niノ” as, 'a '' 1. Indication of the case Patent application No. 1-6&B, ', No. 2,
Invention 4 Name: 1.'7m'7o?+-Song 1st3λ-tl
Brim - λ44. . 3. Person making the amendment Relationship with the case - Applicant Yoshibe Name (Name) Talalion Co., Ltd. 4. Agent 7. Details of the amendment as per the attached sheet.

Claims (1)

[Claims] A two-reel type cassette is equipped with a drive shaft on each reel, and an interlocking system is provided with each of the seven reel wheels having a capstan shaft and a drive source such as the above-mentioned drive shaft PC+-Y, to create a scissors interlocking system. By switching the connection wkll to each 7' light wheel and drive shaft, the direction of knee-boo movement is reversed, so that the sickle tuning fork continues to move all its life.
In order to move integrally with the intermittent gear body driven by *V, the drive source and the intermittent gear body Mb, an a-dominant body is provided, and *+L is provided on the rotational deviation body. An auto-reverse mechanism suitable for a cassette-type tape player, characterized in that an auto-reverse switching mechanism driven by the cassette-type tape player is provided, and the auto-reverse switching mechanism switches the interlocking relationship.