JPS592097B2 - Tape recorder operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder operating device, and more particularly to a tape recorder operating device suitable for use in a micro-sized tape recorder.

In a conventional tape recorder, for example, when the playback button is moved backward to cancel the playback mode, the stop button is pressed to unlock the playback button.

Therefore, a stop button is definitely required. If other operation buttons are provided for the release operation in this way, the number of operation buttons increases, which increases the number of erroneous operations. The present invention has been made to correct these problems, and provides (a) a drive mechanism for a tape recorder that is slid from a backward movement position to a forward movement position against the biasing force of a return spring to reproduce the drive mechanism of a tape recorder; (b) a lock that engages with the locked portion of the regeneration slider that has moved to the forward movement position and holds the regeneration slider in the forward movement position against the biasing force of the return spring; (c) an auxiliary slider that is slidably mounted relative to the playback slider and integrally includes an operating section; and (d) this auxiliary slider and the playback slider. (e) a locking plate movably attached to the regeneration slider; (f) When the operating section is operated to its forward movement position, the regeneration slider and the auxiliary slider integrally move forward while their relative positions are regulated by the spring. (g) When the operating section is operated from its forward position to its backward position, the auxiliary slider is moved against the spring. The slider slides in the backward movement direction relative to the regeneration slider held in the forward movement position, and the engaging portion integrally provided on the slid auxiliary slider engages the lock plate release lever. is pressed, the lock plate is moved via the pressed lock plate release lever, and the regeneration slider is returned to the return position by the urging force of the return spring and the spring. be.

An embodiment in which the present invention is applied to an ultra-small tape recorder will be described below with reference to the drawings.

As shown in FIG. 1, the main body 1 of this tape recorder is formed to be extremely small, and is small enough to fit into a dress shirt pocket.

A playback button 3 and a recording button 4, which also serve as a stop button, are provided on one side 2 of the main body 1. Further, a fast forward button 6 and a rewind button 7 are provided on another side surface 5 orthogonal to this side surface 2. Furthermore, various jacks 8 are arranged on this side. Further, a force set mounting section 11 having a take-up reel shaft 9 and a delivery reel shaft 10 is provided on the upper surface of the tape recorder main body 1, and is covered by a lid 12 which can be opened and closed and also serves as a force set holder. It is becoming more and more popular.

A large number of small holes 13 are provided on the side of the force set mounting portion 11, and are configured to guide sound reproduced from a speaker (not shown) provided inside to the outside. On the other hand, the force set 15 used in this table recorder is
As shown in the figure, it is an ultra-small force set called a microcassette.

A pair of reels are rotatably housed in the force set 15, and a magnetic tape 16 is housed in these reels with both ends fixedly attached. This magnetic tape 1
6 is connected to the force set 15 by means of guide means in the force set 15.
It is hung inside the front opening 17 of. Also, on both sides of this force set 15, a pair of break-off claws 18 are provided to prevent accidental erasure.
is provided, and when this cut-off claw 18 is broken off, erasure of the signal of the track corresponding to this break-off claw 18 is prevented as will be described later. Next, the reproduction operation mechanism related to the reproduction button 31 will be explained with reference to FIGS. 2 and 3. The reproduction button 3 is fixed to the auxiliary slider 21.

A pair of elongated holes 22 are formed in this auxiliary slider 21, and a pin 23a, which is fixed to a reproduction slider to be described later,
23b, and thereby the auxiliary slider 2
1 is supported so as to be slidable left and right in FIG. 2 with respect to the reproduction slider. This slider 211 has a pin 24 protruding from it, and this pin 24 and the pin 23b
A bow spring 25 is tensioned between the slider and the reproducing slider, thereby urging the auxiliary slider 21 to move back to the left in FIG. 2 with respect to the reproduction slider. A reproduction slider 26 is provided below the auxiliary slider 21.

This reproduction slider 26 is longer than the auxiliary slider 21, and a pin 27 is fixed to its right end.
This pin 27 engages with a long hole formed in the chassis. A long hole 28 is formed at the left end of the slider 26, and is fitted into a pin 29 fixed to the chassis. Therefore, this reproduction slider 26 is supported on the chassis so as to be slidable left and right in FIG.
A tension spring 31 for backward movement is tensioned between a pin 30 protruding from the slider 26 and a pin 30a fixed to the chassis, so that the slider 26 moves in the backward movement direction (to the left in FIG. 2). energized. Also, this slider 26
A protruding portion 32 for pressing an intermediate slider, which will be described later, and a locked portion 33 for locking the slider 26 in the forward movement position are integrally formed on the side of the slider 26. Further, a lock release lever 35 is provided above the auxiliary slider 21.

This lock release lever 35 is rotatably supported by a pin 23bI fixed to the reproduction slider 26. One end 36 of the lock release lever 35 is received in a notch 37 formed in the playback button 3, and faces a projection 34 formed in the auxiliary slider 21.
Further, a pin 39 is implanted in the other end portion 38 of the lever 35. A rotatable lever 40 is attached to the side of the lock release lever 35 with a pin 41 fixed to the chassis.
It is arranged in a supported state.

A tension spring 4 is connected between one end of this lever 40 and the chassis.
2 is tensioned, and this lever 40 is urged to rotate clockwise about a pin 41 in FIG. A locking portion 43 is bent at the tip of the lock lever 40 to engage with the locked portion 33 of the reproducing slider 26 to lock the reproducing slider 26. A portion of the lock portion 43 is cut out in an L-shape to form a pressing portion 44, and the pressing portion 44 is configured to press a rotor slider to be described later. Next, the recording operation mechanism related to the recording button 4 will be explained with reference to FIGS. 2 and 3. The recording button 4 is slidably held in a guide hole 47 formed in the playback button 3. Moreover, a long hole 48 formed in the recording button 4 fits into a pin 50 implanted in the protrusion 49 of the auxiliary slider 21. Therefore, this recording button 4 is supported by the auxiliary slider 21 so as to be slidable in a direction perpendicular to the longitudinal direction of the auxiliary slider 21.
The recording button 4 also includes a locked portion 51 for locking the recording button 4 in the forward position, and a pressing portion 52 for pressing a recording slider, which will be described later, via a pressing lever.
are installed in succession. Note that a lock portion 51a is formed by being bent integrally with the chassis in correspondence with the locked portion 51.
is provided, thereby locking the recording button 4 in the forward position. This recording button 4
In FIG. 2, a pressing lever 53 is disposed on the upper side.

This pressing lever 53 is rotatably supported by a pin 54 implanted in the auxiliary slider 21. On the top surface of this lever 54 is a pin 5 for pressing a recording slider, which will be described later.
5 is implanted, and a pressed portion 56 that comes into contact with a pressing portion 52 provided on the recording button 4 is provided on the lower surface. Further, a fish-shaped lever 57 is provided below the recording button 4.

This lever 57 is connected to a pin 5 implanted in a switching slider 58.
9, and is urged to rotate counterclockwise in FIG. 2 about a pin 59 by a coil spring 60. One end of this lever 57 has the pin 3
A pressed part 61 is provided to be pressed to zero, and a contact part 63 is formed at the other end to come into contact with the bent piece 62 of the slider 58 to limit rotation by the coiled spring 60. has been done. On the other hand, a pair of elongated holes 64 are provided in the switching slider 58.
is formed and is fitted into a pair of pins 65 fixed to the chassis, thereby holding the slider 58 slidably relative to the chassis. A U-shaped bent plate spring 66 is fixed to the lower side of the switching slider 58, and the plate spring 66 is fitted into an operating piece 68 of a circuit switching switch 67. For this purpose, the switch 67 is configured to be switched by sliding the switching slider 58. Further, a tension spring 70 is installed between the bent piece 69 bent downward at the end of the slider 58 and the pin 65, so that the slider 58 is biased to slide to the left in FIG. ing. Next, the head substrate 73 disposed above the reproducing slider 26 in FIG. 2 will be explained with reference to FIG. 2. The head substrate 73 is formed of a steel plate.

This head board 73 (l) has a long hole 74 and a U-shaped notch 75, which are fitted into pins 76 fixed to the chassis. A board 73 is supported slidably in the vertical direction as shown in FIG.
is stretched, thereby connecting the head board 73 to the second
In the figure, it is urged to slide downward. This head board 7
A recording/reproducing head 80 is supported on the recording head 3 via an auxiliary plate 79.

Also, on this pad board 73 is a head arm support stand 8.
A head arm 83 is rotatably supported by a pin 82 implanted in a support base 81 (l). In Fig. 2, the head arm 83 is biased to rotate clockwise.
This pin 85 passes through an opening 86 formed in the head board and extends downward, and comes into contact with a protrusion of a recording slider, which will be described later.
This restricts the rotation of the clockwise direction. An erasing head 87 is fixed to the tip of this head arm 83. Further, the second opening 86 formed in the head substrate 73
A first reference surface 88, a second reference surface 89, and an inclined surface 90 that connects these two reference surfaces are formed at the left end in the figure, and a gear switching lever, which will be described later, is formed by these. is rotated via a pin implanted in this lever.

A protruding pressing portion 91 is formed at the upper left portion of the head board 73 in FIG. 2, and is adapted to press an idler switching slider to be described later. A head board pressing lever 94 is provided on the left side of the head board 73 in FIG.

This pressing lever 94 is rotatably supported on the chassis by a pin 95, and has one V-shaped tip 96.
A tension spring 97 is tensioned between the pin 23a and the pin 23a. For this purpose, the pressing lever 94 is urged to rotate counterclockwise about a pin 95 in FIG. 2. The other tip 98 of this lever 94 is in contact with a pin 99 implanted in the head board 73, thereby transmitting the rotation biasing force of the lever 94 by the tension spring 97 to the head board 731. is configured to do so. Further, an auxiliary lever 100 is provided below the lever 94.
This auxiliary lever 100 is rotatably supported by a pin 101 installed in the chassis. The pin 102 implanted in the auxiliary lever 100 is inserted into a notch 103 formed in the reproduction slider 26, and the auxiliary lever 100 is configured to rotate as the reproduction slider 26 moves. ing. And this rescue lever 100
A pinch lever 104 is disposed above and rotatably supported by the pin 1011.

One end of the pinch lever 104 is formed into a U-shape, and a pinch roller 106 is rotatably supported via a pin 105. Further, a tension spring 10 is connected between the other end and a pin 107 formed on the auxiliary lever 100.
8 is tensioned, and urges the pinch lever 104 to rotate counterclockwise about the pin 101 in FIG. However, if the lever 104 is rotated by more than a predetermined amount due to the tension spring 108, the pin 104 installed in the auxiliary lever 100
9. Next, the recording slider 112 provided on the right side of the head board 73 in FIG. 2 will be explained with reference to FIGS. 2 and 4.
3 and a long hole 114 are formed, into which a pin 115 implanted in the chassis is fitted and supported so as to be slidable in the vertical direction l in FIG.

A tension spring 1161 hooked on the protruding piece of the slider 112 is pulled downward, and as a result, the lower edge 117 of the slider 112 in FIG. 2 is fixed to the pressing lever 53. pin 5
It is in contact with 5. Further, a protrusion 118 is integrally formed at the upper left portion of the slider 112 in FIG. This protrusion 118 comes into contact with the pin 85 fixed to the head arm 831, and when the slider 112 is moving backward (in the downward position in FIG. 2), the head arm 83 is rotated forward by the coil spring 84. It prevents movement. The right side of the recording slider 112 in FIG. 2 extends upward through a bent portion 119. A right side portion 120 near the upper end constitutes a stopper to prevent the rewind button 7 from being pressed during recording operation, and this portion 120 is provided protruding downward in FIG. The protrusion 121 constitutes a stopper for preventing the fast forward button 6 from being pressed during recording operation. Further, a pin 122 is implanted at the upper end of the slider 112, and is configured to be able to come into contact with and separate from a protrusion of a detection lever (to be described later) of a break-off claw 18 for preventing accidental erasure of the force set 15. . Furthermore, this slider 112 is provided with an abutment part 123 bent upward, and when the detection lever detects that the break-off claw 18 of the cassette cutter 5 is broken off, this contact part 123 is bent upward. The detection lever contacts the contact portion 123 to prevent the recording slider 112 from moving forward. A detection lever 124 provided on the side of the recording slider 112 is rotatably supported by a pin 125 against the chassis, and is supported by a coil spring 126 around the pin 125 as shown in FIG. It is biased to rotate counterclockwise. This detection lever 124 is provided with a detection section 127 for detecting the presence or absence of the break-off claw 18 for preventing accidental erasure of the force set 15, and the side opposite to this detection section 127 is provided with the A protrusion 128 is provided that comes into contact with a pin 122 provided on the recording slider 112. Due to this protrusion 128, if the recording slider 112 does not move forward, the detection lever 124
Rotation around center 25 is restricted by coil spring 126. Further, a stepped portion 129 is provided at the lower part of the detection lever 124 in FIG. This stepped portion 129 comes into contact with the contact portion 123 of the recording slider 112 as the detection lever 124 rotates ζ when the detection portion 127 detects that the break-off claw 18 is not present in the force set 15. This forward movement of the recording slider 112 is prevented to prevent switching to the recording mode. Next, the intermediate slider 132 disposed at the bottom of the recording slider 112 will be explained with reference to FIGS. 2 and 4. A pair of long holes 133 and 134 are formed in this slider 132. is the pin 115, and the long hole 134 is the pin 135 fixed to the chassis.
are fitted together.

For this purpose, the intermediate slider 132 is placed in a second position relative to the chassis.
In the figure, it is supported slidably in the vertical direction. A step 136 is formed on the side of the intermediate slider 132, and a bent piece of a lock slider, which will be described later, engages with this step 136, thereby causing the slider to slide downward in FIG. Forced. Also, the second intermediate slider 132
In the figure, the protrusion 32 of the reproduction slider 26 is shown at the bottom.
An inclined portion 137 and a flat portion 138 are continuously formed to face each other. Further, in FIG. 2, the upper portion of the intermediate slider 132 serves as a pressing portion 139 for pressing a pin of an intermediate lever, which will be described later. - The intermediate lever 140 disposed at the upper part of the intermediate slider 132 in FIG.
It is rotatably supported on the chassis around 41.

There are two pins 142 and 143 on the bottom surface of this lever 140.
has been planted. The first pin 142 is for abutting against the pressing portion 139 of the intermediate slider 132,
Further, the second pin 143 is for pressing a switching slider to be described later. Pin 14 of this intermediate lever 140
A switching slider 144, which is slidably operated by a switch 3, is disposed at the upper part in FIG. is fitted against the As a result, the slider 144 is supported so as to be slidable left and right in FIG. The bent portion 147 formed on the side of the slider 144 and the pin 1 fixed to the chassis
A tension spring 149 is tensioned between the slider 148 and the intermediate lever 140, thereby urging the slider 144 to slide to the right in FIG. The pressed part 15 is pressed by the pin 143 of
It is 0. Further, a protruding piece 151 is formed on the side of the bent portion 147. This protruding piece 151 can come into contact with a rapid feed slider to be described later. Further, a U-shaped leaf spring 152 is fixed to the lower surface of the slider 144. This plate spring 152 is connected to the recording/reproducing circuit and a switch 15 for switching between 0N and 0FF of the motor, which will be described later.
The switch 153 is connected to the operating section 154 of No. 3, and as the slider 144 slides, the switch 153 is switched between ON and OFF. Next, the rewind operation mechanism and the fast forward operation mechanism will be explained with reference to FIGS. 2 and 4.

The rewind button 7 is fixed to the right end of the rewind slider 157 in FIG. Note that an L-shaped bent piece 158 is fixed to this rewind button 7. Rewind slider 1
571 has a pair of elongated holes 159 formed therein, which are fitted into the pins 148 and 160 fixed to the chassis, thereby supporting the unwinding slider 157 so as to be slidable left and right in FIG. has been done. Further, a locked portion 161 is formed on the side of this slider 157, and the tip of this slider 157 forms a pressing portion 162 of a head board push-back lever to be described later. Further, an operating lever 163 is rotatably supported on the pin 148. A thin pin 164 is fixed to the upper side of this lever 163, and a thick pin 165 is fixed to the lower side. A projecting piece 166 formed on the side of the unwinding slider 157 can come into contact with the thin pin 164. Next, a description will be given of the fast-forward slider 167 to which the fast-forward button 6 is fixed, which is arranged in parallel with the rewind button 7. A pair of elongated holes 168 are formed in this fast-forward slider 167. is fitted onto a pair of pins 169 fixed to the chassis, whereby the slider 167 is supported across the chassis so as to be slidable left and right in FIG. The bent piece 170a connected to the side of the slider 167 and the pin 1
A tension spring 170 for reciprocating movement with respect to 69 is tensioned, and the slider 167 is urged to slide to the right in FIG. Further, on the side of the slider 167, there is a locked portion 171 for locking the slider 167 in the forward movement position, and a protrusion 1 of the switching slider 144.
A bent piece 172 for pressing 51 is formed. The tip of this slider 167 forms a pressing portion 173 of a head board push-back lever, which will be described later. A lock slider 174 is provided above both sliders 157 and 167. A pair of elongated holes 175 are formed in this lock slider 174, and the pin 11
5 and 135, thereby being slidably supported on the chassis in a direction perpendicular to the sliders 157 and 167, that is, in the vertical direction in FIG. A tension spring 177 is stretched between the bent piece 176 formed on the slider 174 and the chassis, and the slider 174 is urged to slide downward in FIG. 2. Also, this bent piece 17
6 is in contact with the stepped portion 136 of the intermediate slider 132. Further, a pair of bent lock portions 178 and 179 are formed on the sides of the slider 174.
These lock portions 178 and 179 are connected to the locked portion 161 of the rewind slider 157 and the fast forward slider 1.
These sliders 157 and 161 are respectively engaged with the locked portions 171 of the sliders 67 to lock the sliders 157 and 161 in the forward movement position. Further, as shown in FIG. 2, the lock slider 174 has a pressed portion 180 bent upward at its lower end and comes into contact with the pressed portion 44 of the lock lever 40. On the left side of this lock slider 174 in FIG.
is installed. This lever 181 is rotatably supported on the chassis by a pin 182. A semicircular pressing portion 183 is formed at one end of this lever 181, and this pressing portion 183 allows the head board 7
It is configured to press 3. Also this lever 1
A pair of pressed parts 184 and 185 are formed at the other end of 81. The first pressed portion 184 is the rewinding slider 15
The second pressed part 185 is pressed by the pressing part 173 at the tip of the fast-forward slider 167, and the levers 181 are rotated by these 6. It is configured. The reason why the second pressing part 185 is lower than the first pressing part 184 is to compensate for the difference in stroke amount due to the difference in distance between the pressing point of the lever 181 and the pin 182. In FIG. 2, the head board push-back lever 181 is provided with an operation slider 188 for switching the reel shafts 9 and 10. This operation slider 188 is arranged so that it overlaps with the switching slider 144.
44. And this slider 18
A pair of elongated holes 189 are formed in the slider 8, and the pair of pins 146 are fitted into the slider 18.
8 is slidable left and right against the chassis in Figure 2.
I support this. A pressed portion 190 is formed at the right end of the slider 188 in FIG. 2, and is in contact with a thick pin 165 fixed to the operating lever 163C. Further, an L-shaped bent piece 191 is formed on the side of this lever 188, and the bent piece 191 is bent so as to operate a slide cam to be described later.
A tension spring 192 is stretched between the tip of the bent piece 191 and the pin 146, thereby urging the slider 188 to slide to the right in FIG. Next, the drive mechanism of the capstan and reels 9 and 10 will be explained. In Fig. 2, the motor 1 on the left side is
96 are arranged.

A pulley 197 and a flywheel 198 for smooth rotation are fixed to the output shaft of the motor 196. On the other hand, in Fig. 2, the gear switching lever 1 is located approximately in the center.
99 are arranged. This lever 199 is rotatably supported by a pin 200 fixed to the chassis, and a tension spring 202 is stretched between the protrusion 201 of this lever 199 and the pin 30a fixed to the chassis. The lever 199 is connected to the pin 20 in FIG.
It is urged to rotate clockwise around 0. However, the rotation of this lever 199 by the tension spring 202 is restricted by the pin 203 implanted in this lever 199 coming into contact with the first reference surface 88 of the opening 86 of the head board 73. . And this gear switching lever 199
A support shaft 204 is attached to the support shaft 204, and a gear 205, a pulley 1J206, and a friction ring 207 are rotatably supported on the support shaft 204.

Note that these gears 205, pulleys 206, and friction wheels 2
07 are fixed to each other so that the three parts rotate together. and Puno 197 of the motor 196
A belt 208 is stretched between the pulley 206 and the pulley 206, and transmits the rotation of the motor 196 to the pulley 1J206. In addition, the rotational axis of the motor 196 and the pulley 1j206
The rotation axes of the belt 208 are perpendicular to each other.
A guide wheel 209 is provided to prevent the wheel from coming off the wheels 97 and 206, and a flywheel 21 is placed on the side of this friction wheel 207, which regulates the running path of the belt 208.
0 is placed.

This flywheel 210 is fixed to a capstan 211, and the capstan 211 is rotatably supported with respect to the chassis. Therefore, the capstan 211 is configured to be rotationally driven when the friction wheel 207 and the flywheel 210 come into contact with each other. Further, a friction ring 212 having a much smaller diameter than the flywheel 210 is fixed to the capstan 211. This friction wheel 2
An idler 213 is disposed on the side of 12. This idler 213 is rotatably supported by a pin 215 implanted in one end of an L-shaped idler lever 214.
This idler lever 214 is rotatably supported by a pin 217 fixed to the tip of an auxiliary lever 216. A bow tension spring 219 is connected between the bent piece 218 of this auxiliary lever 216 and the other end of the idler lever 214.
is tensioned, which causes the idler lever 214 to
is urged to rotate counterclockwise in FIG. 2 about a pin 217 with respect to the auxiliary lever 216. Further, the auxiliary lever 216 is rotatably supported by a pin 220 fixed to the chassis. An idler switching slider 221 is provided on the side of the auxiliary lever 216. A pair of elongated holes 222 are formed in the slider 221, and these are fitted into a pair of pins 223 fixed to the chassis. A tension spring 226 is provided between the bent piece 224 formed on the upper part of the slider 221 in FIG. This biases the auxiliary lever 216 to rotate in the counterclockwise direction about the pin 220 in FIG. , can come into contact with a pressing portion 91 formed on the upper left side of the head board 73 in FIG. 2. A tension spring 22 is provided between the slider 221 and the chassis.
8 is tensioned, and the slider 221 is urged to slide downward in FIG. On the other hand, the second gear of the gear 205
A carrier 231 that can engage and disengage the gear 205 is disposed on the right side in the figure.

This carrier 231 is rotatably supported at the tip of a carrier support lever 232 via a support shaft 233, and this carrier support lever 232 is rotatably supported by a bearing portion of a delivery reel shaft 10, which will be described later. There is. A bent piece 23 formed on the side of this support lever 232
A tension spring 235 is tensioned between the carrier 231 and the support lever 232 in the clockwise direction in FIG.
is urged to rotate in the direction of meshing with the gear 205. Next, a driving mechanism for the reel shafts 9 and 10 will be explained with reference to FIGS. 2, 5, 6, and 7.

An auxiliary chassis 238 for supporting the reel shafts 9 and 10 is further provided on the chassis. A pair of bearings 239 and 240 are fixed onto this auxiliary chassis 238. Support shafts 241 and 242 are fixedly supported by these bearings 239 and 240, respectively. That is, bearings 239, 240 and support shafts 241, 24
No rotational movement occurs between the two. Gears 243 and 244 are fitted to the fixed support shafts 241 and 242, respectively, so as to be rotatable and slidable in the axial direction.

Note that annular grooves 245 and 246 are formed on the outer circumferential surfaces of the boss portions of these gears 243 and 244 that extend downward. Further, boss portions 247, 248 are formed on the upper portions of these gears 243, 244. And this gear 24
Friction rings 249 and 250 are rotatably fitted to the outer circumferential surfaces of the boss portions 247 and 248 of No. 3 and 244, respectively. The lower surfaces of these friction wheels 249, 250 are in contact with felts 251, 252 fixed to the ground surface of the gears 243, 244, and are configured to be frictionally driven by the gears 243, 244, respectively. There is. Also, these friction wheels 24
Engagement pins 253 and 254 are fixed to 9 and 250, respectively. Furthermore, the reel shafts 9 and 10 are rotatably fitted to the upper end sides of the support shafts 241 and 242.

A pair of rings 255, 256 are attached to these reel shafts 9, 10, respectively, in the axial direction of the support shafts 241, 242 to prevent them from sliding or falling off.
Engagement claws 257 and 258 are formed on the outer peripheral surfaces of these reel shafts 9 and 10 for transmitting rotational force to the pair of reels housed in the force set 15, and engagement claws 257 and 258 are formed on the lower portions thereof. Gear portions 259 and 260 that engage with the engagement pins 253 and 254 of the friction rings 249 and 250 are formed. For this reason, the rotational force of the friction rings 249, 250 is applied to the force set 15 through the engagement pins 253, 254, the gear portions 259, 260, and the engagement claws 257, 258.
The signal is transmitted to a pair of reels. Compression springs 261, 262 are interposed between the reel shafts 9, 10 and the friction wheels 249, 250, thereby causing the friction wheels 249, 250 and the gears 243, 244, respectively.
are pressed downward in the axial direction of the support shafts 241 and 242. Further, caps 263 and 264 are fitted to the upper ends of these reel shafts 9 and 10, respectively.
, 10. Next, to explain the single drive switching mechanism of the reel shafts 9 and 10, a pair of bent pieces 265 are formed on the auxiliary chassis 238, and a pair of pins 2 are attached to these bent pieces 265.
66 is fixed.

A pair of elongated holes 268 of a slide cam 267 fit into these pins 266, whereby the slide cam 267 is supported so as to be slidable left and right in FIG. 2 relative to the auxiliary chassis 238. A pair of cam portions 269 and 270 are formed on this slide cam 267. These cam portions 269 and 270 each have a first reference surface 269a.
, 270a and second reference surfaces 269b, 270b. Further, a bending piece 271 is formed on this slide cam 267, and a tension spring 272 is tensioned between this bending piece 271 and the pin 266. In the figure, it is slidably biased to the right. Further, a bent pressed portion 273 is formed on the upper surface of the slide cam 267.
This pressed portion 273 is pressed by the bent piece 191 of the operation slider 188, and the slide cam 267 is thereby slidably operated. Further, a pair of pins 274 and 275 are implanted and fixed on the auxiliary chassis 238 in correspondence with the reel shafts 9 and 10, respectively.

L-shaped operation pieces 276 and 277 are respectively supported on these pins 274275 so as to be slidable in the axial direction of the pins 274 and 275 in FIG. The tip of one of these operation pieces 276 and 277 is connected to the gear 24, respectively.
3,244 in annular grooves 245, 246.
Also, a pin 28 is attached to the other end of the operating pieces 276, 277.
0,281 are fixed, and these pins 280,2
81 are the cam portions 269 of the slide cam 267, respectively;
, 270. Therefore, the operating pieces 276 and 277 are configured to be operated by the cam action of the slide cam 267, respectively. For example, the pin 280 is connected to the second reference surface 269b of the cam portion 269 of the slide cam 26r.
, the operating piece 276 is pushed down against the compression spring 278. Therefore, at this time gear 24
3 and the friction ring 249 are connected to the support shaft 2 by the compression spring 261.
41, and thus the engagement pin 253 is separated from the gear portion 259 of the reel shaft 9, and the transmission of rotational force from the gear 243 to the reel shaft 9 is cut off. become. On the other hand, when the pin 280 is on the first reference surface 269a of the cam part 269, the operating piece 276 is on the ground, the gear 243 and the friction ring 249 are also in the upper position, and therefore the engagement pin 253 is engaged with the gear part 259. are doing. Therefore, rotational force is transmitted from the gear 243 to the reel shaft 9. Next, the operation of the micro tape recorder with the above configuration will be explained. 1 Switching operation to playback mode To switch to playback mode, simply operate the playback button 3 to the right in the stop mode shown in FIG.

As a result, the reproduction mode shown in FIG. 8 is obtained. That is, when the playback button 3 is pushed to the right, the auxiliary slider 21 fixed to the playback button 3 also moves to the right. In addition, in the stop mode, the auxiliary slider 21 and the reproduction slider 26 are mutually tensioned by the tension spring 25, so that the pins 23a and 23b implanted in the reproduction slider 26 are connected to the elongated holes of the auxiliary slider 21, respectively. 22 is in contact with the left end in FIG. 2'. Therefore, when the auxiliary slider 21 moves to the right, the reproduction slider 26 simultaneously moves to the right in FIG. 2 against the tension spring 31, and reaches the position shown in FIG. During this movement of the playback slider 26, the locked portion 33 of the slider 26 overcomes the locking portion 43 of the lock lever 40, and the playback slider 26 is locked at this position. Further, as the playback slider 26 moves to the right, the protruding portion 32 of the slider 26 comes into contact with the inclined portion 137 at the tip of the intermediate slider 132, causing the intermediate slider 132 to move upward from FIG. Press to
The protruding portion 32 of the reproduction slider 26 is connected to the intermediate slider 13.
This slider 13 is in contact with the flat part 138 of No.2.
2 stops forward movement.

At this time, since the stepped portion of the intermediate slider 132 is engaged with the bent piece 176 of the lock slider 174, as the intermediate slider 132 moves forward, the lock slider 174 also moves forward against the tension spring 1771. become. For this reason, as will be described later, the rewind button 7 and the fast forward button 6 are not locked in the playback mode, and pressing these buttons 6 and 7 results in so-called queue mode and review mode. By moving the intermediate slider 132 upward, the pressing portion 139 of the slider 132 presses the pin 142 of the intermediate lever 140, and the lever 140 is rotated counterclockwise about the pin 141 in FIG. let

By rotating this intermediate lever 140, a pin 143 implanted in this lever 140 is moved to the switching slider 1.
This slider 144 is pressed by pressing the pressed portion 150 of 44.
is moved to the left in FIG. 2 against the tension spring 149. For this purpose, the slider 144 operates the operating section 154 via the leaf spring 152, thereby causing the switch 153 to
closes. Therefore, power is supplied to the recording/reproducing circuit and the motor 196 starts rotating. Further, due to the rightward movement of the reproduction slider 26, the head substrate is pressed via a tension spring 97 which is stretched between one tip 96 of the head substrate pressing lever 94 and the slider 26. As shown in FIG. 8, the lever 94 rotates counterclockwise ζ around a pin 95, and the other end 98 of the lever 94 presses a pin 99 implanted in the head board 73.

As a result, the head substrate 13 moves upwardly against the tension spring 78, as shown in FIG. Accordingly, the recording/reproducing head 80 supported on the head substrate 73 also moves forward, enters the force set 15 through the front opening 17 of the force set 15, and comes into contact with the magnetic tape 16. However, the erasing head 87 supported by the head board 73 via the head arm support stand 81 and the head arm 83 cannot move forward because the pin 85 formed on the head arm 83 is in contact with the protrusion 118 of the recording slider 112. As a result, the head arm 83 is unable to rotate counterclockwise about the pin 82 relative to the head base plate 73. Further, as the head board 73 moves forward, the pin 203 embedded in the gear switching lever 199 moves from the first reference surface 88 of the opening 86 of the head board 73 to the second reference surface 89 side.

Due to this, the gear switching lever 199 is operated by the tension spring 202.
As a result, the friction ring 207 rotates clockwise about the pin 200 as shown in FIG. For this reason, the rotation of the motor 196 is controlled by the pulley 197.
, the belt 208, the pulley 206, the friction wheel 207, and the flywheel 210 to the capstan 211, and the capstan is rotationally driven. Also, the head board 7
3, the pressing part 91 of the head board 73 presses the protruding part 227 of the idler switching slider 221,
The idler switching slider 221 moves upward against the tension spring 228, as shown in FIG.

For this purpose, the protruding piece 225 of the auxiliary lever 216 is pulled via the tension spring 226, whereby the auxiliary lever 216 rotates counterclockwise about the pin 220 as shown in FIG. For this purpose, the idler 213 supported by the auxiliary lever 216 via the idler lever 214 comes into contact with the friction ring 212 and the gear 243. Note that in this reproduction mode, the slide cam 267 is not operated and is in the same state as in the stop mode.

That is, as shown in FIG.
0 is in contact with the first reference surface 269a of the cam portion 269 of the slide cam 267, and is in contact with the pin 28 of the operation piece 277.
1 is in contact with the second reference surface 270b of the cam portion 270. Therefore, the gear 243 is in the upper position, and the friction wheel 243 is in the upper position.
The pin 253 of 9 is engaged with a gear portion 259 of the reel shaft 9. On the other hand, the gear 244 is in the lower position, and the friction wheel 250
The pin 254 is not engaged with the gear portion 260 of the reel shaft 10, and the reel shaft 10 is not driven one rotation. Therefore, the rotation of the motor 196 is caused by the pulley 197,
Belt 208, pulley 206, friction ring 207, flywheel 210, friction ring 212, idler 213, gear 24
3. It is transmitted to the reel shaft 9 on the take-up side via the friction ring 249, pin 253 and gear part 259, and the reel shaft 9
In the figure, it is rotated clockwise. Also, due to the forward movement of the reproduction slider 26, the notch 1 of this slider 26 is
The pin 102 contained in the pin 103 is also pushed, so that the auxiliary lever 100 rotates counterclockwise about the pin 101 as shown in FIG.

For this reason, the pin 10 implanted on this lever 100
9 moves to the right as shown in FIG. 8, the pinch roller 106 attached to the tip of the pinch lever 104 comes into contact with the capstan 211 via the magnetic tape 16. As shown in FIG. For this purpose, the magnetic tape 16 is driven to run at a predetermined speed. The mode is switched to the playback mode as described above, and the magnetic tape 16 in the force set 15 runs at the same speed as the surface speed of the capstan 211.
The material is sequentially delivered from the reel fitted to the delivery reel shaft 10 and wound onto the reel fitted to the take-up reel shaft 9.

The recording/reproducing head 80, which is in sliding contact with the running magnetic tape 16, reproduces the audio signal recorded on the tape 16. Next, the operation of canceling the reproduction mode, that is, the operation of switching from the reproduction mode to the stop mode, will be explained with particular reference to FIG.

Canceling the playback mode is achieved by pushing the playback button 3 to the left in the playback mode shown in FIG.

That is, as shown in FIG. 9, the auxiliary slider 21 to which the regeneration button 3 is fixed has its elongated hole 22 connected to the pin 23a,
23b, it is slidably supported relative to the reproduction slider 26. As shown in FIG. 8, in the reproduction mode, the pins 23a and 23b
Moreover, the reproduction slider 26 is locked by a lock lever 40. Therefore, when the playback button 3 is pushed to the left, the auxiliary slider 21 along with the playback button 3 moves to the left with respect to the playback slider 26 against the tension spring 25, as shown in FIG. For this purpose, the protrusion 34 of the auxiliary slider 21 presses one end 36 of the lock release lever 35 rotatably supported by the pin 23b, and moves the lever 35 around the pin 23b as shown in FIG. Rotate it clockwise. For this purpose, the other end 38 of this lever 35 presses against the lock portion 43 of the lock lever 40, and this lever. -40 is rotated counterclockwise about the pin 41 against the tension spring 42 as shown in FIG. Therefore, the engagement between the lock portion 43 of the lock lever 40 and the locked portion 33 of the regeneration slider 26 is released, and the regeneration slider 26 is pulled back by the tension spring 31 for backward movement and moves back to the left in FIG. . By this backward movement of the playback slider 26, an operation opposite to the switching from the stop mode to the playback mode described above is performed, and the playback mode is switched to the stop mode.

That is, the auxiliary lever 100 moves back due to the back movement of the regeneration slider 26, which causes the pinch roller 106 to move back via the pinch lever 104, causing the capstan 211 to move back.
distance from. Also, since the head board pressing lever 94 moves back, the head board 73 moves back by the tension spring 78.
The recording/reproducing head 80 exits through the front opening 17 of the force set 15. Further, the gear switching lever 199 moves back counterclockwise around the pin 200, and the friction ring 207 and flywheel 210 are separated from each other. Also, idler switching slider 2
21 is moved back by the bow tension spring 226, and for this purpose the idler 213 is moved by the auxiliary lever 216 and the idler lever 2.
14 and moves back away from the friction ring 212 and gear 243. Furthermore, the intermediate slider 132 is moved back by the tension spring 177 via the lock slider 174 due to the return movement of the reproduction slider 26; For this purpose, both the intermediate lever 140 and the switching slider 144 are connected to the tension spring 1.
49, the switch 153 opens and the motor 1
96 and the recording/reproducing circuit are stopped. As described above, the reproduction mode shown in FIG. 8 is switched to the stop mode shown in FIG. 2. 2. Switching to Recording Mode Switching to the recording mode can be performed by pressing the playback button 3 to the right while keeping the record button 4 pressed in the stop mode shown in FIG.

In this way, the recording mode shown in FIG. 10 is obtained. When the record button 4 is pressed in the playback mode shown in FIG. 8, the locked portion 51 of the record button 4 comes into contact with the lower side of the lock portion 51a in FIG. 10 connected to the chassis. Therefore, the recording button 4 does not move completely forward, and the recording button 4 is not locked. For this reason, even if the recording button 4 is operated in the playback mode, it is not possible to switch to the recording mode. On the other hand, when the play button 3 is pressed to the right while the record button 4 is held down, the locked portion 51 of the record button 4 is locked by a lock portion 51a connected to the chassis.

Further, by pressing the playback button 3 to the right, the locked portion 33 of the playback slider 26 is locked by the locking portion 43 of the lock lever 40, similar to the operation of switching to the playback mode. When the recording button 4 moves forward, the pressing part 52 of the recording button 4 presses the pressed part 56 of the pressing lever 53 supported by the auxiliary slider 21, and moves this lever 53 around the pin 54. Rotate counterclockwise as shown in Figure 10.

For this purpose, the pin 55 implanted in the lever 53 presses the lower edge 117 of the recording slider 112 in FIG. 10 to move the slider 112 upward in FIG. 10 against the tension spring 116. . Therefore, the protrusion 118 of this slider 112 also moves upward. For this reason, the head arm 83, whose rotation was restricted by the protrusion 118 via the pin 85, rotates clockwise about the pin 82 as shown in FIG. 10 by the coil spring 84. An erase head 87 supported at the tip of the head 83 enters the force set 15 through the front opening 17 of the force set 15 and comes into sliding contact with the magnetic tape 16. Also recording slider 1
12 moves upward, the right side portion 120 of the slider 112 moves to a position opposite to the bending piece 158 fixed to the rewind button 7.

At the same time, the protrusion 121 of this slider 112 is connected to the fast forward button 6.
Move to a position facing the For this reason, the rewind button 7 or the fast forward button 6 cannot be pressed in this recording mode. That is, in the recording mode, even if the rewind button 7 or the fast forward button 6 is pressed by mistake, the system is configured so that the mode cannot be switched to the rewind mode or the fast forward mode. Further, by the forward movement of the recording button 4, the recording button 4 presses a fish-shaped lever 57 supported by a switching slider 58, and moves this lever 57 around a pin 59 as shown in FIG. direction against the coil spring 60.

For this reason, the pressed portion 61 of the fish-shaped lever 57 faces the pin 30 fixed to the reproduction slider 26. In this state, the reproduction slider 26 moves to the right as shown in FIG. 10, so the pin 30 presses the pressed portion 61 of the fish-shaped lever 57 and moves this lever 57 to the right. Since this fish-shaped lever 57 is supported by a pin 59 fixed to the switching slider 58, movement of this lever 57 causes the switching slider 58 to move to the right against the tension spring 70. Therefore, the operating piece 68 of the switch 67, which is associated with the switching slider 58 via the leaf spring 66, is operated to switch the circuit switching switch 67, and the recording/reproducing circuit changes from the playable state to the recordable state. Change. Further, at the same time as switching to the playback mode by moving the playback slider 26 to the right, the intermediate slider 13
2. The switch 153 is closed via the intermediate lever 140 and the switching slider 144.

Further, the forward rotation of the head board pressing lever 94 causes the head board 73 to move forward, and in conjunction with this, the gear switching lever 199
rotates clockwise and the friction wheel 207 and flywheel 21
The idler 213 contacts the friction ring 212 and the gear 243. Furthermore, the pinch roller 106 comes into contact with the capstan 211 via the auxiliary lever 100. As described above, the stop mode is switched to the recording mode, and the magnetic tape 16 is driven to run at a predetermined speed.
A predetermined audio signal will be recorded.

If the break-off claw 18 (see Fig. 1) for preventing accidental erasure of the record set 15 is broken off, the detection lever 124 rotates to the position shown by the imaginary line in Fig. 10 and enters the recording mode. This prevents the switching operation.

In other words, the recording slider 112 is moved in conjunction with the forward movement of the recording button 4.
moves forward, so that the pin 122 on this slider 112
also move. For this purpose, the coil spring 12 of the detection lever 124
6, forward rotation in the counterclockwise direction about the pin 125 in FIG. 10 is permitted. Since the force set 15 does not have the break-off pawl 18, the detection part 127 of the lever 124 enters the force set 15, and the step part 12 of this lever 124
9 makes contact with the contact portion 123 of the recording slider 112. Therefore, in this state, the recording slider 112 is prevented from moving further forward, and switching to the recording mode is no longer possible. Note that the operation for canceling the recording mode, that is, the operation for switching from the recording mode to the stop mode, is performed in substantially the same manner as the operation for canceling the playback mode shown in FIG.

That is, the regeneration button 3 is moved back to the left in FIG. 10, the auxiliary slider 21 is moved to the left with respect to the regeneration slider 26, and the lock release lever 35 is moved clockwise in FIG. 9 around the pin 23b. As a result, the lock lever 40 is rotated counterclockwise in FIG. let By this backward movement of the playback slider 26, the record button 4 moves to the left, and the locked part 51 and the locked part 5 of the record button 4 are moved to the left.
The engagement with 1a is released.

For this purpose, the recording slider 112 has a tension spring 11 for double movement.
It is pulled by 6 and moves back. For this purpose, the head arm 83
The erasing head 87 is rotated counterclockwise about the pin 82 in FIG. Further, when the recording button 4 is released from the lock, the fish-shaped lever 57 is rotated counterclockwise in FIG. 10 about the pin 59 by the coil spring 60. Pressed portion 61 of lever 57
The contact between the pin 30 and the pin 30 is released.

Therefore, the switching slider 58 supporting the lever 57 via the pin 59 is moved to the first position by the reciprocating tension spring 70.
In Figure 0, it moves back to the left. This results in a switch 67 associated with this slider 58 via a leaf spring 66.
is switched, and the recording/reproducing circuit is switched from a recordable state to a reproducible state. It should be noted that the backward movement of the reproduction slider 26 other than those described above is the same as the case of switching from the reproduction mode to the stop mode.

Switching to Rewind Mode The rewind mode is obtained by pressing the rewind button 7 in the stop mode shown in FIG.

That is, when the rewind button 7 is pressed, the locked portion 161 of the rewind slider 157 pushes up the lock portion 178 of the lock slider 174, as shown in FIG. And lock part 1
78 relatively over the locked portion 161, the lock slider 174 is moved back by the tension spring 177, and the lock portion 178 of this slider 174 moves over the rewinding slider 15.
The rewinding slider 157 engages with the locked portion 161 of No.7.
is locked. Also, due to the forward movement of this rewinding slider 157, the protrusion 166 of this slider 157 is moved to the operating lever.
In order to press the pin 164 of 3-163, this lever 1
63 rotates counterclockwise around a pin 148 as shown in FIG.

For this purpose, the pressed portion 150 of the switching slider 144 is pressed by the pin 164, and the slider 144 is pressed by the tension spring.
1149 to the left as shown in FIG.
A switch 153 associated with this slider 144 via a leaf spring 152 is closed. For this purpose motor 196
starts rotating, and power is also supplied to the recording/reproducing circuit. Further, as the operating lever 163 rotates, the thick pin 165 installed on the lower side of the lever 163 presses the pressed portion 190 of the operating slider 188.

For this purpose, the operating slider 188 moves to the left against the tension spring 192, and the bent piece 191 of the slider 188 moves to the left.
presses the pressed portion 273 of the slide cam 267. Therefore, the slide cam 267 moves from the state shown in FIG.
The state will change to the one shown in the figure. That is, as shown in FIG. 12, the pin 280 of the operating piece 276 contacts the second reference surface 269b of the cam portion 269 of the slide cam 267, and the pin 281 of the operating piece 277 contacts the cam portion 270.
contacts the first reference surface 270a. For this purpose, the operating piece 276 moves downward along the pin 274 against the compression spring 278.

The gear 243 equipped with the annular groove 245 with which the tip of the operating piece 276 is engaged moves downward along the support shaft 241, and along with this, the friction ring 249 is also moved downward by the compression spring 261. Moving. For this reason, the engagement between the pin 253 implanted in the friction ring 249 and the gear portion 259 of the reel shaft 9 is released, and rotational force is no longer transmitted from the gear 243 to the reel shaft 9. On the other hand, since the operation piece 277 moves upward, the gear 244 and the friction ring 250 are connected to the support shaft 277.
2, the pin 254 embedded in the friction ring 250 engages with the gear part 260, and the rotation of the gear 244 is transmitted to the reel shaft 10 via the friction ring 250.
The reel shaft 10 is in a state where it can be rotated one rotation counterclockwise in FIG. 11.

Moreover, when switching to the rewind mode, the head board 73 is not moved forward, but remains in the backward movement position. Therefore, gear switching lever 199 also does not rotate, and gear 205 supported by this lever 199 is engaged with carrier 231. For this purpose, the rotation of the motor 196 is caused by the pulley 197, belt 208, pulley 206, gear 205, carrier 231, etc. Gear 244, friction wheel 250
, is transmitted to the reel shaft 10 via the engagement pin 254 and the gear portion 260 of the reel shaft 10. Therefore, the reel shaft 10
The magnetic tape 16 is wound at high speed onto the delivery reel in the force set 15 which is engaged with the rewind mode. Next, the operation of canceling the rewind mode, that is, the operation of switching from the rewind mode to the stop mode will be explained with reference to FIG.

To cancel this rewind mode, the playback button 3 may be pressed and moved further to the left from the stop position, as shown in FIG.

Note that in this rewind mode state, the playback button 3 remains in the stop mode state, and as shown in FIG. is in contact with the left end of the elongated hole 22. In this state, when the auxiliary slider 21 is pushed to the left via the playback button 3 and moved, the auxiliary slider 21 moves relative to the playback slider 26 against the tension spring 25, and the protrusion of the auxiliary slider 21 moves. 34 presses one end 36 of the lock release lever 35. For this reason, the lock release lever 35 rotates clockwise around the pin 23b implanted in the regeneration slider 26, and the lever 3
5 pin 39 presses the lock lever 40. Therefore, the lock lever 40 rotates counterclockwise about the pin 41 as shown in FIG. The pressing portion 44 at the tip of this lever 40 is the pressed portion 180 of the lock slider 174.
Press to move the slider 174 upward in FIG. For this purpose, this lock slider 174
The lock portion 178 of the rewind slider 157 is separated from the locked portion 161 of the rewind slider 157, thereby releasing the lock of the rewind slider 157. Note that unlocking of the rewind button 7 can also be achieved by operating the playback button 3 in the rewind mode to switch to the playback mode.

That is, when the playback button 3 is operated, the protrusion 32 of the playback slider 26 moves the intermediate slider 132 forward, but at this time, the bent piece 176 of the lock slider 174 engages with the stepped portion 136 of the intermediate slider 132. Therefore, the lock slider 174 also moves forward and the rewind button 7 is unlocked. Moreover, the rewinding slider 157 is connected to the tension spring 14.
9 and the tension spring 192 via the operating lever 163, it moves backward when the lock is released.

Further, the switch 1153 is opened by the backward movement of the switching slider 144, and the power supply to the motor 196 and the recording/reproducing circuit is cut off. Furthermore, as the operation slider 188 moves back in conjunction with the back movement of the rewinding slider 157, the slide cam 267 also moves back by the tension spring 272. For this reason, the operation pieces 276 and 277 are
The state shown in FIG. 2 is switched to the state shown in FIG. 6, and the pin 253 engages with the gear portion 259 of the reel shaft 9,
54 is detached from the gear portion 260 of the reel shaft 10. This brings the reel shaft 9 on the winding side into a state where it can be driven to rotate again. 4. Switching operation to fast-forward mode Switching to fast-forward remote mode can be accomplished by pressing the fast-forward button 6 in the stop mode shown in FIG.

By doing this, the stop mode is switched to the fast forward mode shown in FIG. 145. That is, when the fast forward button 6 is pressed, the fast forward slider 167 to which the button 6 is fixed moves forward, and the locked portion 171 of the fast forward slider 167 pushes up the locking portion 179 of the lock slider 174. Then, when the lock portion 179 relatively passes over the locked portion 171, the lock slider 174 moves back by the tension spring 177, and the lock portion 179 of this slider 174 crosses the locked portion 171 of the fast-forward slider 167. When engaged, the fast forward slider 1674 is locked. Further, as the slider 167 moves forward, the bent piece 172 of the slider 167 pushes the protruding piece 151 of the switching slider 144, causing the switching slider 144 to move to the left against the tension spring 149 as shown in FIG. move it to

As a result, the changeover switch 153 is operated and closed, and power is supplied to the motor 196 and the recording/reproducing circuit. Note that when switching to this fast forward mode, the head board 73 is not moved forward as in the case of switching to the rewind mode, and therefore the gear switching lever 199 does not rotate and is supported by this lever 199. The gear 205 is engaged with the carrier 231.

Furthermore, when switching to this fast forward mode, the slide cam 267 is not operated, and as shown in FIG.
3 is engaged with the gear portion 259 of the reel shaft 9, and the pin 254 is disengaged from the gear portion 260 of the reel shaft 10. For this purpose, the rotation of the motor 196 is controlled by the pulley 197 and the belt 208.
, the pulley 1J206, the gear 205, the carrier 231, the gear 244, the gear 243, the friction ring 249, the pin 253, and the gear part 259, and are transmitted to the reel shaft 9 on the winding side. Therefore, the magnetic tape 16 is wound at high speed onto the take-up reel in the cassette 15 which is engaged with the reel shaft 9, and the fast forward mode is established. Next, the operation of canceling the fast-forward mode, that is, the operation of switching from the fast-forward mode to the stop mode, will be explained.

This fast-forward mode can be canceled by moving the playback button 3 further to the left from the stop position in the same way as the rewind mode cancellation operation (see FIG. 13). That is, the regeneration button 3 is moved to move the auxiliary slider 21 relative to the regeneration slider 26, the lock release lever 35 is rotated, and the lock slider 174 is released from the tension spring 17 via the lock lever 40.
7 to unlock the fast-forward slider 167. As a result, the rapid feed slider 167 is moved back by the tension spring 170, and the switching slider 1
44 is moved back by a tension spring 149. For this purpose, the switch 153 is switched open, and the power supply to the motor 196 and the recording/reproducing circuit is cut off. Through the above steps, the mode is switched to the stop mode. Switching operation to review mode Switching to the review mode shown in FIG. 15 is achieved by pressing the rewind button 7 in the playback mode (see FIG. 8).

Note that this review mode is for rewinding the magnetic tape 16 by a small amount in the reproduction mode. Therefore, in the review mode, the device remains in this mode and is not locked. That is, when the rewind button 7 is pressed in the play mode state, the operation slider 1 is moved by the tension spring 192.
The rewinding slider 157, which is slidably biased in the backward movement direction via the operating lever 163 and the tension spring 19,
2 to the left in FIG.

At this time, the lock slider 174 is pushed by the stepped portion 136 of the intermediate slider 132 that is moving forward and is moving upward in FIG. This slider 157 is not locked. As the rewinding slider 157 moves forward, the protruding piece 166 of the slider 157 moves against the pin 16 of the operating lever 163.
4 and rotates the lever 163 counterclockwise in FIG. 15 about the pin 148.

For this purpose, the pin 165 of this operating lever 163 presses the operating slider 188 and moves this slider 188 to the left in FIG. 15 against the tension spring 192. Therefore, the bent piece 191 of this slider 188 presses the pressed portion 273 of the slide cam 267 and the slide cam 26
7 to the left in FIG. For this purpose, the operation pieces 276 and 277 are operated, respectively, and the reel shaft 9,
10 changes from the state shown in FIG. 6 to the state shown in FIG. 12, as in the case of switching to the rewind mode. That is, the pin 253 fixed to the friction ring 249
is detached from the gear portion 259 of the reel shaft 9, and the friction ring 2
A pin 254 fixed to the reel shaft 10 engages with a gear portion 260 of the reel shaft 10. Therefore, the gear 243 is connected to the reel shaft 9.
The rotation of the gear 244 is not transmitted to the reel shaft 10.
The rotation is now in a state where it can be transmitted. Further, due to the forward movement of the rewinding slider 157, the pressing portion 162 of the slider 157 is pressed against the pressed portion 18 of the head board push-back lever 181.
4 to rotate this lever 181 counterclockwise in FIG. 15 about the pin 182.

For this purpose, the pressing portion 183 of this lever 181 presses the upper edge of the head board 73 in FIG. Accordingly, the head board 73 moves back downwardly in FIG. 15 against the tension spring 97 associated with the head board 73 via the pin 99 and the head board pressing lever 94.
When the head board 73 moves back, the pressing part 91 of the head board 73 is separated from the protrusion 227 of the idler switching slider 221, and the idler switching slider 221 is moved by the tension spring 22.
8 makes a return movement.

As a result, the auxiliary lever 216 rotates clockwise in FIG. 15 about the pin 220, and the idler 213 supported by the lever 216 via the idler lever 214 moves, causing the idler 213 to ring 21
2 and gear 243. Further, due to the backward movement of the head board 73, the bent piece 73a formed integrally with the head board 73 presses the pressed portion 104a of the pinch lever 104, and the lever 104 is pulled by the tension spring 10.
8 and rotate counterclockwise about the pin 101 in FIG.

As a result, the pinch roller 106 is connected to the capstan 211.
This pinch roller 106 and capstan 2
The running drive of the magnetic tape 16 by the magnetic tape 11 is released. Further, due to the backward movement of the head board 73, the pin 203 of the gear switching lever 199 is moved to the second position of the opening 86 of the head board 73.
The pin 203 is relatively moved from the reference surface 89 side to the first reference surface 88 side, and the pin 203 is pressed by the first reference surface 88 .

Therefore, the gear switching lever 199 rotates around the pin 200 in the first position.
Rotates counterclockwise in Figure 5. For this purpose, the friction wheel 207 supported by this lever 199 is separated from the flywheel 210, and the gear 205 also supported by the lever 199 meshes with the carrier 213. Therefore, the rotation of the motor 196 is transmitted to the reel shaft 10 on the delivery side via the pulley 197, belt 208, pulley 206, gear 205, carrier 231, gear 244, friction ring 250, pin 254 and gear section 260. The reel shaft 10 is driven once in the counterclockwise direction in FIG.

As a result, the magnetic tape 16 is rewound to the delivery reel in the cassette 15 that is engaged with the reel shaft 10, and the review mode is activated. Note that in this review mode, the rewind button 7 is not locked as described above, so when the user releases his or her finger from the rewind button 7, the review mode is canceled.

That is, the review mode is switched to the playback mode. In other words, when you release your finger from the rewind button 7, the rewind slider 157 to which this button 7 is fixed releases the tension spring 1.
92 controls the operation slider 188 and the operation lever 16.
It is returned via 3. And this rewind slider 15
As the operation slider 188 moves back together with the slide cam 7, the slide cam 267 also changes from the state shown in FIG. 12 to the state shown in FIG. As a result, the reel shaft 9 can be rotationally driven, and the transmission of rotational force between the reel shaft 10 and the friction ring 250 is cut off. Further, due to the backward movement of the rewinding slider 157, the pressing force on the head board push-back lever 181 is also released, so that the head board 73 returns to the forward movement position. Along with this, the gear switching lever 19
9 also rotates and the gear 205 separates from the carrier 231,
Friction ring 207 contacts flywheel 210. Further, as the head board 73 returns to the forward position, the idler switching slider 221 moves forward, and the two auxiliary levers 216 rotate forward, so that the idler 213 moves between the friction ring 212 and the gear 2.
43, the magnetic tape 16 enters the playback mode, and the signals recorded on the magnetic tape 16 in the portion rewound by the review operation are played back again. 6 Switching operation to queue mode FIG. 16 shows the queue mode.

Switching to the queue mode is performed by pressing the fast forward button 6 in the playback mode (see FIG. 8). Note that this cue mode is used when the magnetic tape 16 is used in the playback mode.
This is a small amount of fast-forwarding. Therefore, in this queue mode, the device remains in this mode and is not locked. That is, as shown in Fig. 16, when the fast forward button 6 is pressed in the playback state, the fast forward button 6 is pressed and the fast forward button 6 is pressed.
The feed slider 167 moves forward against the tension spring 170 for backward movement. At this time, the lock slider 174 has already been moved forward, so the fast-forward slider 167 is not locked, as in the review mode. When the fast-forwarding slider 167 moves forward, the pressing portion 173 of the slider 167 presses the pressed portion 185 of the head board push-back lever 181, causing the lever 181 to move counterclockwise around the pin 182 as shown in FIG. direction.

Therefore, similarly to the switching operation to the review mode, the lever 181 pushes the head board 73 and causes it to move back. This backward movement of the head board 73 causes the pressing portion 9 of this board 73 to
1 is separated from the protrusion 227 of the idler switching slider 221, the idler 213 is moved away from the friction ring 212 and the gear 2.
Stay away from 43. At the same time, the gear switching lever 199 also rotates due to the backward movement of the head board 73, the friction ring 207 separates from the flywheel 210, the gear 205 meshes with the carrier 231, and the pinch roller 106 separates from the capstan 211. . Therefore, the rotation of the motor 196 is transmitted to the reel shaft 9 via the pulley 197, belt 208, pulley 1J206, gear 205, carrier 231, gear 244, gear 243, friction ring 249, pin 253 and gear part 259, and the reel shaft 9 is rotated. The shaft 9 rotates clockwise in FIG. 16 at high speed.

For this purpose, the force set 15 fitted with this reel shaft 9
The magnetic tape 16 is wound up at high speed on the take-up reel inside, and the queue mode is brought out. As already mentioned, the fast-forward button 6 is not locked in this queue mode, so when the fast-forward button 6 is released, the fast-forward slider 167 is moved back by the tension spring 170.

As a result, the pressing force on the head board push-back lever 181 is also released, so that the head board 73 returns to the forward movement position. Along with this, the gear switching lever 199 also rotates and the gear 205
is separated from the carrier 231, and the friction ring 207 comes into contact with the flywheel 210. Further, as the head board 73 returns to the forward position, the idler switching slider 221 moves forward, and the auxiliary lever 216 moves forward, causing the idler 213 to move forward.
comes into contact with the friction ring 212 and the gear 243 to enter the reproduction mode, and subsequently the signal recorded on the magnetic tape 16 is reproduced. Next, the features of the ultra-compact tape recorder described above are summarized as follows.

First, a playback button 3 and a recording button 4 are provided on one side 2 of the tape recorder main body 1, and a fast forward button 6 and a rewind button 7 are provided.
is provided on the other side 5, so that the main body 1 can be held with one hand and various mode switching operations can be performed using the thumb and forefinger.

Furthermore, there is no need to particularly check the various operation buttons, and so-called blind operation is possible. In addition to the basic tape recorder operations such as playback, recording, rewinding, and fast forwarding, you can now also operate the review 1 and queue 1 functions.Additionally, new operation buttons have been added for the review 1 and queue 1 operations. Not yet.

That is, if you press the rewind button 7 in the playback mode, you can get the review mode, and in the playback mode, you can press the fast forward button 6.
It is configured so that you can enter queue mode by pressing . This makes it possible to quickly and reliably locate the beginning of the magnetic tape 16. In addition, in the recording mode, as the recording slider 112 moves forward, the right side portion 120 and protrusion 121 of the slider 112 prevent the forward movement of the rewind button 7 and the fast forward button 6, respectively, thereby preventing switching to the review mode and queue mode. I'm trying to prevent it.

Further, the unlocking operation of the fast forward button 6 and the rewind button 7 is performed by using the relative movement of the auxiliary slider 21 to the playback slider 26, which is related to the backward movement of the playback button 3, to release the lock release lever 35 and the lock lever. This is accomplished by moving the lock slider 174 forward via the lock slider 140.

This reduces the number of operation buttons and makes operations more convenient. Note that unlocking of the fast forward button 6 and the rewind button 7 can also be realized by operating the playback button 3 in the fast forward mode or rewind mode to switch to the playback mode. That is, when the playback button 3 is operated, the protrusion 32 of the playback slider 26 moves the intermediate slider 132 forward, but at this time, the bent piece 176 of the lock slider 174 moves forward.
Since the lock slider 174 is engaged with the stepped portion 136 of the intermediate slider 132, the lock slider 174 also moves forward and the fast forward button 6 and rewind button 7 are unlocked. Also play button 3
The lock can be released by moving the regeneration button 3 in the backward movement direction, utilizing the movement of the auxiliary slider 21 relative to the regeneration slider 26, and moving the lock lever 40 backward with the lock release lever 35. It is becoming a reality.

For this reason, the number of operation buttons does not increase and it becomes possible to easily operate with one hand. Further, a recording button 4 is provided close to the playback button 3, and these operation buttons 3, 4
The directions of movement are perpendicular to each other.

Then, if you move only playback button 4, it becomes playback mode,
Further, when the playback button 3 is moved while the record button 4 is pressed, the recording mode is set. Therefore, it is possible to hold the tape recorder main body 1 with one hand and switch to the playback mode and the recording mode with one finger. As explained above, according to the present invention, there is provided an auxiliary slider that integrally has an operation section and is slidable relative to the reproduction slider, and the auxiliary slider and the reproduction slider are Due to the spring stretched between the auxiliary slider and the reproducing slider, when the operating section moves in the forward direction, both move in unison, and the reproducing slider is held in the forward direction by the lock plate. and is configured to be held in a moving position.

On the other hand, for the movement of the operating section in the backward movement direction, the auxiliary slider first slides in the backward movement direction against the spring by utilizing the relative movement of the auxiliary slider with respect to the reproduction slider, This sliding causes the engaging part integrally provided on the auxiliary slider to press the lock plate release lever movably attached to the regeneration slider, and this pressing causes the lock plate release lever to be released. The reproducing slider held at the forward movement position is returned to the return movement position by the biasing force of the spring and the return spring. According to the invention, therefore:
By operating one operating section, the playback slider can be moved forward and held at the forward movement position, or can be returned to the backward movement position.

Therefore, there is no need to provide a separate operation part, such as a stop button, for the backward movement of the playback slider, unlike in the conventional case.
The operating device of the tape recorder can be simply configured, and the tape recorder can be made smaller. Furthermore, as described above, since the number of operating sections is reduced, it is less likely that other operating sections will be operated by mistake, and erroneous operations will be prevented.

[Brief explanation of drawings]

The drawings show an embodiment in which the present invention is applied to an ultra-small tape recorder, in which Fig. 1 is an external perspective view of this tape recorder, Fig. 2 is an enlarged plan view of the operating mechanism, and Fig. 3 is a reproduction FIG. 4 is an enlarged exploded perspective view of the rewind and fast-forward operation section, FIG. 5 is an enlarged perspective view of the reel shaft and its switching mechanism, and FIG. 6 is an enlarged perspective view of the reel shaft switching operation section. 7 is a sectional view taken along line 6 in FIG. 6, FIG. 8 is an enlarged plan view of the operating mechanism in playback mode, and FIG. 9 is a rear view.
10 is an enlarged plan view of the operating mechanism in recording mode, FIG. 11 is an enlarged plan view of the operating mechanism in rewind mode, and FIG. 12 is an enlarged plan view of the operating mechanism in rewind mode. FIG. 13 is an enlarged plan view of the operating mechanism showing the rewind mode release operation, FIG. 14 is an enlarged plan view of the operating mechanism in fast forward mode, and FIG. 15 is a rear view of the operating section of the reel shaft in rewind mode. FIG. 16 is an enlarged plan view of the operating mechanism in the review mode. FIG. 16 is an enlarged plan view of the operating mechanism in the queue mode. Also, in the symbols used in the drawings, 3 is the play button (
21 is an auxiliary slider, 25 is a tension spring, 26 is a regeneration slider, 31 is a tension spring (return spring), 33 is a locked part, 34 is a protrusion (engaging part), 3
5 is a lock release lever (lock plate release lever), and 40 is a lock lever 1 (lock plate).

Claims (1)

[Scope of Claims] 1 (a) A playback slider 26 that is slid from a backward movement position to a forward movement position against the biasing force of a return spring 31 to switch the drive mechanism of the tape recorder to a playback mode; (b) A locking plate 40 is provided which engages with the locked portion 33 of the reproduction slider 26 that has moved to the forward movement position and holds the reproduction slider 26 in the forward movement position against the biasing force of the return spring 31. In the tape recorder, (c) an auxiliary slider 21 that is slidably mounted relative to the playback slider 26 and integrally includes the operation section 3; and (d) this auxiliary slider 21 and the playback slider 26. This playback slider 26
and (e) a lock plate release lever 35 movably attached to the reproduction slider 26. ) When the operating section 3 is operated to its forward movement position, the relative position is regulated by the spring 25, and
The reproducing slider 26 and the auxiliary slider 21 integrally move in the forward direction, and the reproducing slider 26 is held at its forward position by the lock plate 40, and (g) the operating section 3 is moved to its forward position. When the auxiliary slider 21 is operated from the forward position to the backward movement position, the auxiliary slider 21 slides in the backward movement direction against the spring 25 relative to the reproduction slider 26 held at the forward movement position. Auxiliary slider 21 moved
The engaging portion 34 integrally provided presses the lock plate release lever 35 and moves the lock plate 40 via the pressed lock plate release lever 35, thereby releasing the return spring 31 and the spring 25. An operating device for a tape recorder configured to return the playback slider 26 to a backward movement position by a biasing force.