KR800000331B1 - Recording and/or reproducing apparatus mode control system - Google Patents

Abstract

A recording and/or reproducing apparatus which uses a recording medium, comprises an end detecting part which detects the end of said recording medium by stopping the reel fixture (25), a transferring device which has three auto-operations (auto shut-off, auto-rewind, auto-repeat), and other operation assisting parts related to the rotation driving of the record medium.

Description

Recorder

The figure shows an embodiment in which the present invention is applied to a radio cassette cassette recorder.

1 is a plan view of the main part in the stop mode of this tape recorder.

2 is a cross-sectional view taken along the line II-II of FIG.

3 is a cross-sectional view taken along line III-III of FIG.

4 is a cross-sectional view taken along the line IV-IV of FIG.

5 is a perspective view of a lock plate

6 is a longitudinal cross-sectional view of the reel zone.

FIG. 7 is a diagram of FIG.

Eighth is a first-line X-ray

9 is a plan view of the main part in the auto shutoff operation.

FIG. 10 is a 9th view of X-ray

FIG. 11 is a view of the 13th and XI-XI lines described later

12 is a plan view of the main portion of the switch slider 110 in a state where one end (1 段) is advanced.

Fig. 13 is a plan view showing main parts of the end detection state of the recording mode in the Otori wind operation;

14 is a plan view of the main portion of the pressure slider 86 in the state shown in FIG.

Fig. 15 is a plan view of the main parts showing the shut-off operation in the ortori wind operation.

16 is a cross-sectional view taken along line XVI-XVI of FIG. 18 to be described later.

FIG. 7 is a plan view of the main part in a state in which the switching slider 110 is advanced two steps.

18 is a plan view showing main parts of the end detection state of the recording mode in the orthotopic operation;

19 is a plan view of the main portion of the pressure slider 86 in a double acting state in the state shown in FIG. 18;

Fig. 20 is a plan view showing the main portion of the end detection state of the rewind in the auto repeat operation.

FIG. 21 is a plan view of the main portion of the pressure slider 86 in a double acting state in the state shown in FIG.

Fig. 22 is a plan view showing the main portion of the end detection state of the regeneration mode in the orthotopic operation;

23 is a plan view of the main portion showing the state of prevention of shut-off in a cue and a review

Fig. 24 is a plan view of the main parts showing the release of the prevention operation of the shut-off prevention mechanism in the feeding and rewinding mode.

The present invention relates to a recording / playback apparatus adapted to record and / or reproduce using a recording medium.

In a cassette-type tape recorder, in the recording or reproduction mode, the magnetic tape is pulled out from the rail of the side to be sent out sequentially and wound around the rail of the winding side. When the magnetic tape is completely sent out from the rail on the sending side, it stops automatically by manual or end detection. If the magnetic tape is to be reproduced once more, the magnetic tape must be rewound to the discharge side rail using the tape recorder as the rewinder mode.

In order to alleviate such inconvenience of operation, a tape recorder that automatically switches to rewind mode in connection with end detection is considered. However, the end detection in this type of tape recorder has almost been done by a tape counter, and adopts a method of operating the tape recorder's operating lever by a plunger solenoid based on this end detection. Therefore, there is a drawback that the counter must be set again for the end detection by the length of the magnetic tape, and the cost increases because the apparatus is large in order to install the plunger solenoid.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and includes an end detector which detects the end of the recording medium by stopping the rail, an auto shut-off and an auto rewind. And an operating mechanism operating in relation to the traveling drive portion of the recording medium, wherein the switching operation unit performs three switching operations of the recording medium. When the termination is detected, the recording / playback apparatus main body is configured to perform auto shut-off, ortho-wind, and ortho-rite respectively by the operation mechanism based on the switching operation of the switching operation unit. A recording and reproducing apparatus is provided. Therefore, according to the present invention, since the end detection is surely performed irrespective of the length of the recording medium such as a magnetic tape, and the operation mechanism is operated in relation to the driving section of the recording medium without using a plunger solenoid. The device is not on a large scale and costs are relatively low. In addition, since the orbitite operation is also possible, it is possible to provide a recording and reproducing apparatus that is easier to use.

Next, an embodiment in which the present invention is applied to a cassette tape precoder with a radio will be described with reference to the drawings.

1 is a plan view of the main part of the tape recorder, in which the eject button 2, the rewind button 3, the stop button 4, the play button 5, and the feed button are provided on the front of the mechanism 1; (6) and the recording buttons 7 are arranged side by side in a row. These operation buttons (2), (3), (4), (5), (6), and (7) are all sliding materials in the sliding holes 8 formed in the mecha deki 1. Maintained. For example, the rewind button 3 will be described with reference to FIG. 2. The rewind button 3 is held in the sliding hole 8, and one end of the coil spring 9 incorporated in the button 3 is closed. We are in contact with stone piece 10 addressed to Mekadeki (1). As a result, the rewind button 3 is biased in the double acting direction. At the distal end of the rewind button 3, a right-angled triangular blood lock portion 11 is spoken, and the fatigue portion 11 abuts against the stopper 12 formed integrally with the mecadic key 1. The double acting position is fixed.

In addition, since the stripper 12 is made by integrally molding the synthetic resin together with the mecha deki 1, the stripper 12 is elastically deformable, and as shown in FIG. 3, the rewind button 3 can be inserted. In this case, the pike part 11 is pressed and deformed, and the upper part rides over the pike part 11. By employing such a structure, the number of labors of assembly is reduced and the number of parts is reduced. In addition, when this stripper 12 is broken, the metal bar 13 can be inserted as shown in FIG. In addition, this bar 13 is supported by the support part (not shown) formed in the mecadéki 1.

Next, the lock plate 14 for locking the operation buttons 3, 4, 5, 6, and 7 will be described based on FIG. 2 and FIG. The plate 14 is supported by the pin 15 formed on both sides of the plate 15 with a pivoting material, and locked by the spring spring l6 about the pin 15 in FIG. It is rotated clockwise or clockwise. Five protrusions 17, 18, 19, 20, and 21 are formed on the upper surface of the lock plate 14. The first projection 17 engages with the fatigue portion 11 of the rewind button 3 to lock the button 3. The second projection 18 is pressed by the fatigue portion of the stop button 4 so that the lock plate 14 is counterclockwise about the pin 15 in FIG. 2 against the spring spring 16. In addition, the stop 18 is roughly a two-sided triangular shape so that the stop button 4 is not locked. The third projection 19 is for locking the playback button 5. The fourth projection 20 is for locking the feeding button 6. The fifth protrusion 21 is for locking the recording button 7.

The heights of the protrusions 17, 18, 19, 20, and 21 are different, and the protrusions 18 are the highest, followed by the protrusions 19, and then the protrusions 17 and the protrusions. (20) is the third highest. And the protrusion 21 is comprised lowest.

Priority of operation buttons 3, 4, 5, 6, and 7 by the difference in height of these projections 17, 18, 19, 20, and 21 If the height of the projection is high, the operation button corresponding to this operation button has priority over the operation button corresponding to the low projection. In addition, the lock plate 14 has a pin 22 protruding downward to perform a shut-off operation, whereby the lock plate 14 is rotated as if the stop button 4 was pressed. It is supposed to be.

Next, the tape end detecting mechanism disposed below the rail stand 25 of the take-up shaft will be described with reference to FIG. 6. A support shaft 27 is fixed to the auxiliary substrate 26. And the said rail stand 25 is supported by this rare axis material by the rare electron material, and the holding | maintenance is given by the E ring 28. As shown in FIG. The cap 29 is attached to the upper plate of the rail stand 25 so as to rotate integrally with the rail stand 25. In addition, a boss 30 is formed on the bottom of the rail stand 25. The boss 30 has a ply slider 31 for preventing noise, a spring receiver 32, a coil spring 33, and an intermediate part. The lever 34 is fitted. An arm 35 is formed in the spring support 32, and a pin 37 implanted in the intermediate lever 34 is fitted to the small hole 36 formed in the arm 35. The ring 38 is press-fitted at the lower end of the boss 30 of the rail stand 25 so that the intermediate lever 34 is prevented from falling off the boss 30 at the flange portion of the ring 38. It is.

A detection lever 39 is disposed below the intermediate lever 34, and is supported by a rotational material with the support shaft 27 as a point. The pin 40 formed to protrude downward from the intermediate lever 34 fits the small hole 41 formed in the detection lever 39. As shown in Fig. 1, roughly cross-shaped grooves 42 are formed at the end of the detection lever 39 opposite to the end where the small hole 41 is formed. A pin 44 into which the swing lever 43 is implanted fits into the groove 42. The groove 42 has a pocket 45 for importing the pin 44 when the rail stand 25 is electrostatically rotated (counterclockwise in FIG. 1). A pocket 46 for importing the pin 44 when inverting (rotating clockwise in FIG. 1), and for importing the pin 44 when the rail stand 25 is stopped. The pocket 47 is provided.

In addition, the detection lever 39 is supported by the fixed support shaft 27 as shown in FIG. 6, and does not directly contact the rotating rail 25, and thus, the swing lever 43 through the pin 44. FIG. Lateral pressure applied by) is received by the support shaft 27. Therefore, the load is not applied to the rail stand 25, and the rotation of the rail stand 25 is smooth and the power consumption is reduced.

The swing lever 43 is pivotally supported by a branch pin 48 that is fixed to the mechadeki 1, and is half-turned around the pin 48 in FIG. 1 by the coil spring 49. As shown in FIG. It is rotating clockwise. And cam gear 50 is arrange | positioned at the side part of this rocking lever 43. As shown in FIG. The cam gear 50 is associated with the primary wheel 51 through the belt and the gears (both not shown), and is configured to rotate by this. The cam portion 52 of the cam gear 50 is in contact with the side of the swing lever 43. For this reason, the swing lever 43 is configured to swing when the cam gear 50 rotates.

An intermediate lever 55 is disposed on the side of the swing lever 43. The intermediate lever 55 is supported by the rotation material by the point pin 56 fixed to the auxiliary substrate 26, the tip of the intermediate lever 55 is in contact with the pin 57 fixed to the swing lever 43. have. The pin 58 is implanted in the other end of the intermediate lever 55. And the stop lever 59 is arrange | positioned so that the front end may contact the pin 58 of this intermediate lever 55. As shown in FIG. This lever 59 is supported by the point pin 60 by the rotation material, and is rotated counterclockwise about the pin 60 in FIG. 1 by the coil spring 61. As shown in FIG.

The drive gear 62 is arrange | positioned above this stop lever 59. As shown in FIG.

)개시시에 있어서의 충격을 완화하기 위해 기어(62)의 외주부를 변형가능도록 하고 있는 것이다. 또한 상기 피니온(66)은 상기 프라이휘일(51)이 고착되어 있는 캡스턴(67)에 똑같이 고착되어 있다. 또한 상기 구동기어(62)의 허브(hub)의 하면에는 일체로 핀(68)이 형성되어 있으며, 또 하면에는 캠(69)이 일체로 형성되어 있다. 그리고 상기 스톱레버(59)의 선단은 이기어(62)의 허즈에 형성된 핀(68)과 당접 및 이간(離間)가능도록 배치되어 있다.This gear 62 is supported by the support shaft 63 for rotation. A part 64 is formed in a part of the outer circumference of the gear 62, and the opening 65 is formed in the side part in circular arc shape. The circular opening 65 of the arc is engaged with the gear 62 and the pinion 66 (

The outer peripheral portion of the gear 62 is deformable in order to alleviate the shock at the start. In addition, the pinion 66 is similarly fixed to the capstan 67 to which the primary wheel 51 is fixed. A pin 68 is integrally formed on the lower surface of the hub of the drive gear 62, and a cam 69 is integrally formed on the lower surface of the hub. The end of the stop lever 59 is disposed so as to be abutted and spaced apart from the pin 68 formed on the huge of the gear 61.

On the upper side of the drive gear 62, a shut-off lever 70 is formed which roughly b-shaped. The shut-off lever 70 is pivotally supported by a fixed support shaft 71, and is further rotated counterclockwise in FIG. 1 around the support shaft 71 by the coil spring 72. As shown in FIG. . For this reason, one arm 73 of this lever 70 is always pressed against the cam 69 of the electric drive gear 62 and is in contact with it. Moreover, the edge part 74 is formed in the front-end | tip of the other arm of this lever 70. As shown in FIG.

The rewind slider 75 is arranged on the left side in the first diagram of the shutoff lever 70. A pair of long holes 76 are formed in the slider 75, and the long holes 76 are fitted to a pair of pins 77 secured to the mecha deki 1 to form a medeki 1 ) Is supported by sliding materials. The rewind slider 75 is slid by the coil spring 78 in the double acting direction (downward in FIG. 1). In addition, the rewind slider 75 is fixed to the rewind button 3, and when the rewind button 3 is pressed, the rewind slider 75 is configured to move upward in FIG.

A lock incision 79 is formed at the side of the rewind slider 75, and the rewind slider 75 at the time of the ortori winding is described later by the end 80 of the incision 79. ) Is supposed to be logged. In addition, a cam groove 81 is formed in the rewind slider 75. The cam groove 81 is formed with a horizontal portion 82 and an inclined portion 83. The horizontal portion 82 of the cam groove 81 engages the pins of the pressure slicer to be described later to move the rewind slider 75 to perform the rewind operation, and the inclined portion 83 receives the pressure slider to be described later. It is intended to rotate at the same time.

Next, the switching operation part arranged in the side part of this rewind slider 75 is demonstrated based on FIG. 1, FIG. 7, and FIG. In addition, the switching operation unit is configured not only to perform three switching of auto shutoff, ortho winder and orthorite, but also to shut off the radio attached to the tape recorder.

That is, a pressure slider 86 for pressing the rewind slider 75 is disposed below the rewind slider 75. The slider 86 is provided with a pair of long holes 87 and 88, and the long holes 87 and 88 are fixed to the pin 90 fixed to the auxiliary substrate 89 and the switching lever described later. Each of the pins 91 is fitted to each other and is supported by sliding materials in the vertical direction in FIG.

Moreover, the tip of this slider 86 is inserted into the opening 89b formed in the bending piece 89a of the said auxiliary engine 89, and guides this slider 86 by this. have. In this slider 86, a pair of pins 92 and 93 are implanted, respectively. One of the pins 92 protrudes upward and is imported into the cam groove 81 of the rewind slider 75. The other pin 93 protrudes downward and faces the end 74 of the shut-off lever 70. In addition, a coil spring 94 for double acting is provided between the slider 86 and the auxiliary substrate 89, whereby the slider 86 moves in the double acting direction (downward in FIG. 1). It is sliding.

In FIG. 1 of this press slider 86, the shut-off slider 95 is arrange | positioned at the left side. The slider 95 is provided with a long hole 96 and a bent hole 97. The pins are formed on the pin 98 on which the auxiliary substrate 89 is implanted and the pins formed on the switching slider described later ( 99 are fitted to each other so that the slider 95 is supported to be slidable. A coil spring 100 is provided between the slider 95 and the auxiliary substrate 89, whereby the slider 95 is slid in the double acting direction. Moreover, the to-be-pressed part 101 is formed in L shape at the front-end | tip of this slider 95 integrally. In addition, at the side of the slider 95, an operation unit 102 for contacting the pin 22 of the log plate 14 to rotate the lock plate 14 is formed.

Moreover, the switching lever 103 which forms roughly L shape is arrange | positioned under this shutter off slider 95. As shown in FIG. This lever 103 is supported by the said 96 by the rotation material, The pin 91 is planted and fixed to the front end, and is fitted in the long hole 88 of the said pressure slider 86. As shown in FIG. Moreover, the width | variety of this long hole 88 is formed comparatively large, and the pin 91 is regrettable with the margin with respect to this long hole 88 in the width direction. The pin 104 is fixed to the other end of the lever 103, and the pin 104 abuts on one side of the switching slider described later.

Moreover, the lock lever 105 is arrange | positioned at the upper part in FIG. 1 of this switching lever 103. As shown in FIG. This lever 105 is supported by the support pin 106 fixed to the auxiliary engine 89 by the rotation material, and is rotated clockwise around this pin 106 by the coil spring 107. As shown in FIG. A lock pin 108 for engaging the end portion 80 of the rewind slider 75 to lock the rewind slider 75 is attached to this lever 105. Further, the pin 105 is implanted and fixed to the lever 105. The pin 109 abuts against a protrusion piece of the switching slider described later, and the lever 105 is formed by the coil spring 107. Regulates meetings.

Next, a description will be made of the switching slider 110 for switching between the pressing slider 86 and the shut-off slider 95. In the switching slider 110, a long hole 111 is formed, and the long hole 111 is formed. The front end portion 113 of the slider 110 is fitted to the gaggles 115 formed on the bent piece 114 of the auxiliary substrate 89 while being fitted with the bent piece 112 formed on the auxiliary substrate 89. By this, the slider 110 is supported by the sliding mechanism in the direction shown in FIG. This slider 110 is slid downward by the coil spring 116 in FIG. In addition, the slider piece 117 is integrally addressed to the slider 110, and the protrusion piece 117 is in contact with the pin 109 on the lock lever 105. Moreover, the said pin 99 is formed in the L imaginary arm 118 formed in this slider 110, and this pin 99 is fitted in the bending hole 97 of the said shutter off slider 95. As shown in FIG. Further, the contact portion 119 formed at a right angle on one side of the slider 110 is in contact with the pin 104 of the switching lever 103. Moreover, in FIG. 1 of this slider 110, the to-be-pressed part 120 integrally formed in the lower end part is in contact with the operation lever mentioned later.

In addition, a bending piece 121 is formed in the switching slider 110 as shown in FIG. Two bending parts 122 and 123 are formed in the bent piece 121. The fatigue part 122 is for switching this tape recorder in an ortori-winded state, and the fatigue part 123 is for switching this tape recorder in an orthotopic state. And the lock lever 124 is arrange | positioned so that engagement with these lock parts 122 and 123 is possible. The lock lever 124 is supported by the auxiliary engine 89 through the branch pins 125 through the rotational material. The lock lever 124 is rotated counterclockwise in FIG. 7 around the branch pins 125 by the loule spring 126. There is no meeting. The lock portion 127 is bent at the distal end of the lock lever 124 and is configured to engage with the fatigue portions 122 and 123. At the other end of the lock lever 124, the pressing portion 128 for performing the unlocking operation is bent and formed.

In FIG. 7, the operation lever 131 is disposed on the right side of the lock lever 124. This operating lever 131 is supported by a rotational material by a support shaft 132 fixed to the auxiliary substrate 89, and is rotated around the support shaft 132 in FIG. 7 by the coil spring 116. It is rotating in the direction.

Moreover, the pin 133 is fixed to this lever 131 at the tip of the arm extended below. The pin 133 is configured to be in contact with the to-be-pressed portion 120 of the switching slider 110. In addition, in FIG. 7 of this lever 131, the pressing part 134 is formed in the front-end | tip of the arm which extends to the left, and presses the to-be-pressed part 128 of the said lock lever 124. FIG. Moreover, the operation handle 131a is protruded to this lever 131, and this lever 131 is switched.

The radio release lever 135 is disposed below the switching slider 110. The lever 135 is pivotally supported by the pin 136 fixed to the auxiliary substrate 89, and is also clockwise about the pin 136 in FIG. 1 by the coil spring 137. As shown in FIG. There is no meeting. In addition, an arm 138 is integrally addressed to the lever 135, and the arm 138 faces the pin 93 implanted in the pressure slider 86. Moreover, the projection piece 139 is made to this lever 135, and is in contact with the lock lever mentioned later.

That is, as shown in FIG. 8, the lock lever 140 is disposed on the side of the radio release lever 135, and is supported by the pin 140 installed on the auxiliary board 89 of the lever 140 with rotation material. The coil spring 142 rotates in a counterclockwise direction about the pin 141 in FIG. A pin 143 is formed at the tip of the arm on the hind side of the lever 140, and the pin 143 is in contact with the protrusion piece 139 of the radio release lever 135. Moreover, the pin 144 is formed in the front-end | tip of the other arm of this lever 140, and this pin 144 locks this lock lever 140. As shown in FIG.

That is, the lock slider 145 is disposed on the side of the lever 140 so as to be slidable, and the three lock parts 146, 147, 148 and the pin 114 of the slider 145 are provided. It is supposed to be possible to engage. Among these, the lock section 446 is for switching the tape recorder to a mixed state and locking it, and the lock section 147 is for switching the tape recorder radio to an off state and locking it. 148 is for switching over and locking this radio. In addition, a pair of long holes 149 are formed in the liner 145, are fitted with a pair of bending elements 150 formed on the auxiliary substrate 89, and supported by a sliding material. In Figure 8 is slid to the right on the right. Moreover, the to-be-pressed part 152 is formed in this slider 145, and it is comprised so that it may be operated by the radio switching lever 153 mentioned later.

The radio switching lever 153 is supported by the support shaft 132 as a rotating material, and is rotated clockwise about the support shaft 132 in FIG. 8 by the coil spring 151. A pair of pins 154 and 155 are addressed to the lever 153. One pin 154 is configured to be in contact with the pressure member 152 of the electric lock slider 145, and the other pin 155 is in contact with the pressure member 140a of the lock lever 140. It is configured to be possible. The lever 153 has an operation knob 156 for switching operation.

Next, the shut-off prevention mechanism at the time of switching to the cue and the levour mode will be described with reference to FIG. 1. In the rewind slider 75, a pressing portion 159 formed by bending is provided. And the intermediate lever 160 is arrange | positioned at this press part 159 so that the front-end | tip 161 may oppose. The lever 160 is pivotally supported by the point pin 162 fixed to the mechadeki 1, and is counterclockwise around the pin 162 in FIG. 1 by the coil spring 163. As shown in FIG. It is rotated in the direction. The other end of the lever 162 is integrally formed with a restricting portion 164, and the pressing portion 165 is integrally formed with the side portion.

In FIG. 1 of the intermediate lever 160, a second intermediate lever 166 is disposed on the right side, and is supported by the moving material by the branched 167. As shown in FIG. The lever 166 is pivotally rotated clockwise about the pin 167 in FIG. 1 by the coil spring 168, and one end 169 of the feeding slider is fixed to the feeding button 6. The pressing portion 171 at the tip of 170 is abutted. Moreover, the bending piece 172 of this lever 166 is comprised so that the side part of the electric intermediate lever 160 may be pressed.

The shutoff detection control lever 173 is disposed so as to overlap the lever 166. The regulating lever 173 is supported by the point pin 167 as a rotational material and is urged clockwise by the coil spring 174, but the rotation in the same direction is integrally addressed to the lever 166. The bent piece 175 is regulated by contacting the restricting portion 164 of the intermediate lever 160. In addition, a to-be-pressed part 176 is formed at the tip of this lever 173, and it is comprised so that it may be pressed by the pushing part 165 of the said intermediate lever 160. FIG. On the other end of the lever 173, a curved pressing portion 177 is provided, which presses the pin 178 of the detecting lever 39 to open the detecting lever 39. The rotating force in the counterclockwise direction in Fig. 1 is applied to the support axis 27.

Next, a description will be made of the jersey lever 181 provided below in FIG. 1 of the intermediate lever 160. The lever 181 is pivoted on the pin 182 secured to the mechanic key 1. It is supported by itself, and its one end is abutted with the grooved part 183 which is bent and integrally formed in the lower part of the said lock lever 124. As shown in FIG. At the other end of the lever 181, an incision 184 is formed in the shape of a 't' shape, and this incision 184 is a bending of the regeneration slider 15 fixed to the regeneration button 5. It is associated with a piece 186. Therefore, the support lever 181 does not rotate unless the play button 5 is pressed to play the play slider 185. Therefore, one end of the lever 181 is prevented 183 of the lock lever 124. In this case, the lock lever 124 cannot lock the switching slider 110. In other words, if the play button 5 is not pressed, the operation lever 131 is operated so that the switching to the orator winder or the orthorite is not performed.

Next, the switching mechanism of the recording and reproducing circuit switching switch 187 associated with the recording button 7 will be described. The recording button 7 is a pressurized portion 189 of the conversion lever 188 having a roughly triangular shape. ). The conversion lever 188 is pivotally supported by the pin 190 fixed to the mecha deki 1 and is also connected to the recording slider 192 by the pin 191. A long hole 193 is formed in the recording liner 192, and the long hole 193 is fitted to the pin 194 fixed to the mecha-deki 1, and is supported by sliding material left and right in FIG. .

The bent piece 195 formed on the slider 192 is in contact with the tip portion 197 of the second conversion lever 196.

The second conversion lever l96 is supported by the pin 198 as a rotating material. The protruding protrusion 199 formed at the other end of the lever 196 is in contact with the tip of the switch switching slider 20. The slider 200 is provided with a pair of long holes 201, and a pair of bent 203 formed in the auxiliary engine 202 fits the long holes 201 so that the slider 200 is a brace only 202. It is supported by sliding material. A coil spring 204 is provided between the slider 200 and the second conversion lever 196. The leaf spring 205 is fixed to the slider 200, and the leaf spring 205 imports the operator 206 of the circuit selector switch 187.

The coil spring 204 also serves as a feedback spring of the switch switching slider 200 and a feedback spring of the recording slider 192. Moreover, even if the recording slider 192 drifts more than the stroke necessary for activating the switch switching slider 200, the extra stroke of the recording slider 192 is directly operated by the switch switching slider 200. Is not converted, and is absorbed into the coil spring 204. Therefore, the number of parts is reduced by the switching mechanism of the recording / reproducing circuit switching switch 187, and the amount of dynamics of the slider 192 and the slider 200 can be set freely, thereby increasing the degree of freedom in design. There is an effect that no excessive force is applied to the slider 192 and the slider 200.

Next, the operation of this tape recorder with the above configuration will be described.

(1) Auto insert off operation

In this tape recorder, a Philip type compact cassette is used, but in this cassette, both plates of the magnetic tape are attached to a pair of rails and stored in the cassette. Therefore, when the cassette is mounted and these rails are engaged with the pair of rail stands 24 and 25 of the tape recorder to drive the tape, the tape is completely wound on one rail. A large load is applied to the rails 24 and 25 by the tape tension. In connection with this, the torque limiter interposed in the drive mechanisms of the rails 24 and 25 revolves, and the rails 24 and 25 stop. This shut-off operation detects the stops of the rails 24 and 25 and performs the detection based on the detection. The tape recorder operates in any mode of recording, playback, feeding and rewinding. . Next, the auto-sumoff operation in the reproduction mode will be described.

In order to perform this shut-off operation, the operation lever 131 is left in the state rotated counterclockwise as shown in FIG. In this state, the pin 133 of the lever 131 is on the left side in FIG. 7, and therefore the switching slider 110 is in the reciprocating position. Therefore, as shown in FIG. 1, the pin 104 of the switching lever 103 is in contact with the contact portion 119 of the slider 110, whereby the pin 91 of the lever 103 is provided with a long hole 88. In FIG. 1 by the coil spring 94 of the pressure slider 86 engaged with the thruster 86, rotation in the clockwise direction centering on the pin 90 is prevented. Therefore, the pin 92 of the pressure slider 86 does not face the horizontal portion 82 of the cam groove 81 of the rewind slider 75, and the pin 92 cannot press the rewind slider 75. It is in a state. In addition, since the switching slider 110 is in the reciprocating position, the pin 99 of the slider 110 engages with the straight portion of the bending hole 97 of the shut-off slider 95 as shown in FIG. This slider 95 does not rotate about the pin 98, and therefore, the to-be-pressed part 101 of this slider 95 opposes the pin 93 of the said pressure slider 86, and this pin ( 93) can be pressed.

In the above state, the state in which the rolling stand 25 on the winding side stops and the shut-off operation is performed will be described based on FIG.

The paulownia lever 43 is oscillated about the point pin 48 against the coil spring 49 by the cam portion 52 of the cam gear 50, and is provided at the tip of the lever 43. The pin 44 engages with the groove 42 of the detection lever 39. In the regeneration mode, since the rail stand 25 is rotated counterclockwise in FIG. 9 with respect to the support shaft 27, the detection lever 39 passes through the pin 40 of the intermediate lever 34. FIG. The counterclockwise rotation moment is received by the rail stand 25 (see FIG. 6). Therefore, the pin 44 of the swing lever 43 reciprocates between the right end and the pocket 45 in FIG. 9 of the groove 42 with the swing of the lever 43.

By the way, when the tape is completely wound on the rail in the cassette engaged with the rail band 25, the rail band 25 is stopped by the tension of the tape. For this reason, the rotation moment is not transmitted to the detection lever 39. Therefore, the pin 44 reciprocates between the right end of the groove 42 of the detection lever 39 and the pocket 47 with the swing of the swing lever 43. Since the pocket 47 is formed deeply toward the support shaft 27, when the pin 44 enters the pocket 47, the swing lever 43 is largely half-centered around the point pin 48 in FIG. 9. Rotate clockwise, and with this, the pin 57 of the swing lever 43 presses one end of the intermediate lever 55 to turn the lever 55 counterclockwise around the point pin 56 in FIG. Rotate in the direction.

By this operation, the pin 58 at the other end of the lever 55 presses the side of the stop lever 59, and the stop lever 59 is driven against the coil spring 61 to FIG. Rotate clockwise around the point pin (60). For this reason, the pin 68 of the drive gear 62 is separated from the tip of the stop lever 59, and the drive gear 62 is free to rotate. The drive gear 62 is integrally formed with a cam 69, and is in contact with one arm 73 of the shutoff lever 70. In addition, since the shutoff lever 70 is rotated in the counterclockwise direction in the state shown in FIG. 1 about the support shaft 71 by the coil spring 72, one side of the lever 70 The arm 73 gives the cam 69 a clockwise rotational force about the support axis 63 in FIG. 1 so that the cam 69 is in contact with a portion having a small radius. Accordingly, the drive gear 62 integrally formed with the cam 69 rotates clockwise about the support shaft 63.

Then, the pinion 66 facing the engagement portion of the drive gear 62 meshes with the drive gear 62. The pinion 66 is fixed to the capstan 67 together with the free wheel 51, and rotates counterclockwise around the capstan 67 in FIG. 1 as long as the power switch is included.

Therefore, when the furion 66 and the drive gear 62 are engaged with each other, the drive gear 62 is driven to rotate by the pinion 66. The cam 69 of the drive gear 62 then rotates clockwise about the support shaft 63. As a result, one arm 73 of the shut-off lever 70 is pushed by the cam 69, and the lever 70 moves clockwise about the support shaft 71 against the coil spring 72. It is driven and brought into the state shown in FIG.

When the shutoff lever 70 rotates, the end portion 74 formed at the tip of the lever 70 presses the pin 93 of the pressure slider 86 to move the slider 86. FIG. Move upward as shown in. This pin 93 presses the pressure-pressed portion 101 of the shutoff slider 95 and moves the slider 95 upward as shown in FIG. Thereby, the operation part 102 of this slider 95 pulls the pin 22 of the lock board 14, and this lock plate 14 is made against the spring spring 16 centering on the pin 15, and is made. Rotate counterclockwise in 2 degrees. For this reason, the playback button 5 locked by the projection 19 (see FIG. 5) of the lock plate 14 doubles and the tape recorder is switched from the playback mode to the stop mode.

As described above, the shutter opening operation detects the stop of the rail stand 25 on the winding side, releases the lock by the lock plate 14 and switches to the stop mode based on the detection. Shut-off operation is performed also in all the modes whose mode state is maintained by the lock of the lock plate 14, that is, the recording mode, the feeding mode, and the rewind mode, in addition to the above-described reproduction mode.

In addition, since the switch of the radio can be shut off, even when the radio is received and recorded on the tape, the shut off operation is performed when the tape is completely wound up. That is, the pin 93 of the pressure slider 86 opposes the arm 138 of the radio release lever 135, and when the pin 93 is pushed by the shutoff lever 70, the radio release lever Reference numeral 135 is rotated counterclockwise in FIG. 9 about the pin 136 against the coil spring 137. For this reason, the radio release lever 135 and the protrusion 139 push the protrusion 143 of the lock lever 140 so that the lock lever 145 is clockwise as shown in FIG. 10 around the pin 14l. Rotate to

Therefore, the engagement between the pin 144 of the lever 140 and the lock portion 148 of the lock slider 145 is released so that the lock slider 145 is moved to the right side as shown in FIG. 10 by the coil spring 15l. do. As a result, the pin 144 of the lock lever 140 engages with the lock portion 147 of the lock slider 145, and at the same time, the radio contact lever 153 of the pushed portion 152 of the lock slider 145 is connected. The pin 154 is pushed so that the lever 153 rotates counterclockwise as shown in FIG. 10 around the support shaft 132. In response to the double acting of the lock slider 145, the radio switching switch (not shown) is switched and shut off.

(2) Otori Winder Operation

This Otori winder operation is performed when the tape is wound up on the rail in the cassette that engages with the rail band 25 on the winding side in the recording or playback mode. Rewinds to a rail that is engaged with). Automatic rewinding in this manner can immediately play back the tape, which is very convenient for use.

In order to perform the Otori winder operation, the operation lever 131 is operated by the operation knob 131a to rotate only one step as shown in FIG. As a result, the switching slider 110 is pressed against the pin 133 of the lever 131 and swings to the left in response to the coil spring 116 in FIG. 11, and with the fatigue portion 122 of the slider 110. The slider 110 is locked in a state where the lock portion 127 of the lock lever 124 is engaged.

Therefore, in this state, as shown in FIG. 12, the contact part 119 of this slider 110 also fluctuates by the fluctuation | variation of the said switching slider 110, and this contact part 119 and the pin 104 are by this. The pressure-reducing lever 103 in contact with the through () becomes rotatable. For this reason, the push slider 86 engaged through the lever 103 and the pin 91 rotates only slightly in the clockwise direction as shown in FIG. 12 around the pin 90 by the coil spring 94. . The pin 92 of the slider 86 then comes in a position opposite the horizontal portion 82 of the cam groove 81 of the rewind slider 75.

However, as only the first step of the switching slider 110, the pin 99 of the slider 110 is still engaged with the straight portion of the bending hole 97 of the shut-off slider 95. The slider 95 does not rotate about the pin 98, and the pressed portion 101 of the slider 95 is still facing the pin 93 of the push slider 86, and the pin 93 It is in a state that can be pressed by.

In the above state, the state in which the rolling band 25 on the winding side stops and the Otori winder operation is subsequently performed will be described based on FIG.

The swing lever 43 swings about the point pin 48 against the coil spring 49 by the cam portion 52 of the cam gear 50. Furthermore, the swing lever 43 is provided at the tip of the lever 43. The pin 44 engages with the groove 42 of the detection lever 39. In the recording mode, since the rail stand 25 is rotated counterclockwise in FIG. 13 with respect to the support shaft 27, the detection lever 39 passes through the pin 40 of the intermediate lever 34. FIG. The counterclockwise rotation moment is received from the rail stand 25 (see FIG. 6). Therefore, the pin 44 of the swing lever 43 reciprocates between the right end and the pocket 45 in FIG. 13 of the groove 42 with the swing of the lever 43.

By the way, when the tape is completely wound on the rail in the cassette engaged with the rail band 25, the rail band 25 is stopped by the tension of the tape. For this reason, the rotation moment is not transmitted to the detection lever 39. Therefore, the pin 44 reciprocates between the right end of the groove 42 of the detection lever 39 and the pocket 47 with the swing of the swing lever 43. Since the pocket 47 is deeply formed toward the support shaft 27, when the pin 44 enters the pocket 47, the swing lever 43 is largely half-centered around the point pin 48 in FIG. 13. It rotates clockwise, and with this, the pin 57 of the swing lever 43 presses one end of the intermediate lever 55 to turn this lever 55 about the point pin 56 in FIG. Rotate clockwise.

By this operation, the pin 58 at the other end of the lever 55 presses the side portion of the stop lever 59, and the stop lever 59 is held against the coil spring 61 so as to be point pin (Fig. 13). Rotate clockwise around 60). For this reason, the pin 68 of the drive gear 62 is separated from the tip of the stop lever 59, and the drive gear 62 is free to rotate. The drive gear 62 is integrally formed with a cam 69, and is in contact with one arm 73 of the shut off lever 70. Moreover, since the shut off lever 70 is rotated in the counterclockwise direction in the state shown in FIG. 1 about the support shaft 71 by the coil spring 72, one arm of this lever 70 is rotated. Reference numeral 73 imparts a clockwise rotational force about the support shaft 63 in FIG. 1 so that the cam 69 is in contact with the portion of which the radius of the cam 69 is small. Accordingly, the drive gear 62 integrally formed with the cam 69 rotates clockwise about the support shaft 63.

Then, the pinion 66 facing the engagement portion 64 of the drive gear 62 meshes with the drive gear 62. The pinion 66 is fixed to the capstan 67 together with the primary wheel 51, and rotates counterclockwise about the capstan 67 in FIG. Therefore, when the pinion 66 and the drive gear 62 engage, the drive gear 62 is driven to rotate by the pinion 66. The cam 69 of the drive gear 62 then rotates clockwise about the support shaft 63. As a result, one arm 73 of the shut-off lever 70 is pushed by the cam 69, and the lever 70 moves clockwise around the support shaft 71 against the coil spring 72. It is driven to come to the state shown in FIG.

When the shutoff lever 70 rotates, a portion near the end 74 formed at the front end of the lever 70 presses the pin 93 of the pressure slider 86 to move the slider 86 to FIG. 13. Move upward as shown in. As described above, the slider 86 is moved clockwise around the pin 90 by the coil spring 94 in FIG. 13, and the pin 92 implanted in the slider 86 is rewinded. Since it opposes the horizontal portion 82 of the cam groove 81 of the slider 75, the rewind slider 75 is pushed through the pin 92 by the movement of the pressure slider 86 and shown in FIG. Move upward as shown.

Then, the lock lever 105, which is in contact with the side of the rewind slider 75 through the pin 108, is rotated clockwise as shown in FIG. 13 by the coil spring 107 about the point pin 106. Thus, the pin 108 of the lever 105 engages with the end portion 80 of the rewind slider 75. As a result, the rewind slider 75 is locked against the coil spring 78 for double acting. As a result, the tape recorder becomes a rewind mode so that the tape wound on the rail engaged with the rail stand 25 on the winding side is rewinded to the rail engaged with the rail stand 24 on the supply side.

In addition, the rewind button 3 fixed to the slider 75 also moves by the rewind of the rewind slider 75. Therefore, the pike portion 11 of the rewind button 3 passes over the protrusion 17 of the lock plate 14 (see FIGS. 2 and 5), and thus the lock plate 14 is rotated. As a result, the locking of the recording button 7 which is locked by the protrusion 21 of the lock plate 14 is released. This is because the projection 21 for locking the recording button 7 of the lock plate 14 is formed lower than the projection l7 for locking the rewind button 3. Therefore, the playback button 5 locked by the projection 19 formed higher than the projection 17 is not unlocked by the rotation of the lock plate 14 accompanying the thrust of the rewind slider 75.

The recording slider 192 doubles by unlocking the recording button 7, and the switch switching slider 200 associated with the slider 192 and the second conversion lever 196 is shown in FIG. 13. Move upwards as shown. Therefore, the switch 187 associated with the slider 200 and the leaf spring 205 switches the recording / playback circuit from the recordable state to the playable state.

In addition, since the radio switch can be switched off by the pressing slider 86, the radio shuts-off operation is performed when the tape is completely wound even when the radio is received and recorded on the tape. That is, the arm 138 of the radio release lever 135 is formed long, and even if the pressing slider 86 rotates clockwise by the coil spring 94, the pin 93 of the pressing slider 86 Opposite the arm 138 of the radio release lever 135, and when this pin 93 is pushed by the shutoff lever 70, the radio release lever 135 is directed against the coil spring 137. The pin 136 is rotated counterclockwise in FIG. 13. For this reason, the protrusion piece 139 of the radio release lever 135 presses the protrusion 143 of the lock lever 140, and at the same time as the shut-off operation, the lock lever 140 is centered on the pin l41. Rotate clockwise as shown in the figure.

Therefore, the engagement between the pin 144 of the lever 140 and the lock portion 148 of the lock slider 145 is released so that the lock slider 145 is moved to the right by the coil spring 151 as shown in FIG. do. As a result, the pin 144 of the lock lever 140 engages with the lock portion 147 of the lock slider 145, and at the same time, the pin of the radio switching lever 153 is pressed against the pressing portion 152 of the lock slider 145. The lever 153 rotates counterclockwise as shown in FIG. 10 around the support shaft 132 by pressing 154. In response to the double acting of the lock slider 145, a radio switching switch (not shown) is switched and shut off.

13 shows the state when the drive gear 62 is rotated by about 270 ° C in the state shown in FIG. 1, but the drive gear 62 is rotated by approximately 90 ° to remain again and the pin 68 of the gear 62 is rotated. ) Contacts the tip of the stop river 59 to stop the rotation. In connection with this, the shutoff lever 70 is also pulled by the coil spring 72 and rotates counterclockwise about the pin 71. For this reason, the pressing slider 86 pushed through the pin 93 of the shut-off lever 70 is pulled by the tension spring 94 for double return and doubles as shown in FIG. At the time of double acting, the pin 92 of the slider 86 is guided to the inclined portion 83 of the cam groove 81 of the rewind slider 75, which is locked by the lock lever 105, so that the slider 86 is moved. Is rotated counterclockwise against the coil spring 94 in FIG. Therefore, the double-pressed pressure slider 86 is double-rotated as shown in FIG. 14, and the pin 92 of the slider 86 faces the horizontal portion 82 of the cam groove 81 of the rewinder slider 75. FIG. It is not.

As described above, when the rewind slider 75 is swung and locked by the lock lever 105, an ortori wind operation is performed. Even during the operation of the Otori wind, the swing lever 43 swings around the point pin 48 by the cam portion 52 of the cam gear 50 against the coil spring 49. Furthermore, the lever 43 The pin 44 provided at the tip of the () is engaged with the groove 42 of the detection lever 39. In the Otori wind mode, since the rail stand 25 is rotated clockwise in FIG. 15 with respect to the support axis 27, the detection lever 39 moves the pin 40 of the intermediate lever 34. FIG. The clockwise rotation moment is received from the rail stand 25 (see FIG. 6). Accordingly, the pin 44 of the swing lever 43 reciprocates between the right end and the pocket 46 in the fifteenth of the groove 42 with the swing of the lever 43.

By the way, when the tape wound on the rail in the cassette engaged with the rail zone 25 is completely rewinded, the rail zone 25 is stopped by the tension of the tape. For this reason, the rotation moment is not transmitted to the detection lever 39. Therefore, the pin 44 reciprocates between the right end of the groove 42 of the detection lever 39 and the pocket 47 with the swing of the swing lever 43. Since the pocket 47 is deeply formed toward the support shaft 27, when the pin 44 enters the pocket 47, the swing lever 43 is largely half-centered around the point pin 48 in FIG. 15. Rotate clockwise, and with this, the pin 57 of the swing lever 43 pushes one end of the intermediate lever 55 so that the lever 55 is half-centered around the point pin 56 in FIG. Rotate clockwise.

By this operation, the pin 58 at the other end of the lever 55 presses the side portion of the stop lever 59, and the stop lever 59 moves against the coil spring 61 to FIG. Rotate clockwise around the point pin (60). For this reason, the drive gear 62 is freely rotated apart from the pin 68 of the drive gear 62 and the tip of the stop lever 59. The drive gear 62 is integrally formed with a cam 69, and is in contact with one arm 73 of the shutoff lever 70. In addition, since the shutter auto lever 70 is rotated counterclockwise in the state shown in FIG. 1 about the support shaft 71 by the coil spring 72, one arm of the lever 70 is rotated. Reference numeral 73 imparts a clockwise rotational force about the support axis 63 in FIG. 1 so that the radius of the cam 69 is in contact with the small portion. Therefore, the drive gear 62 integrally formed with the air cam 69 rotates clockwise about the support shaft 63.

Then, the pinion 66 facing the engagement portion 64 of the drive gear 62 meshes with the drive gear 62. The pinion 66 is fixed to the capstan 67 together with the primary wheel 51. The pinion 66 is rotated counterclockwise around the capstan 67 in FIG. Therefore, when the pinion 66 and the drive gear 62 engage, the drive gear 62 is driven to rotate by the pinion 66. The cam 69 of the drive gear 62 then rotates clockwise about the support shaft 63. As a result, the arm 73 on the other side of the shut-off lever 70 is pressed by the cam 69, and the lever 70 moves clockwise around the support shaft 71 against the coil spring 72. Is driven into the state shown in FIG.

When the shutoff lever 70 rotates, the end portion 74 formed at the tip of the lever 70 presses the pin 93 of the pressure slider 86 to cause the slider 86 to move. When the slider 86 swings, the pin 92 fixed to the slider 85 presses the arm 105a of the lock lever 105 to urge the lever 105 against the coil spring 107 so that the point pin ( 106, it rotates counterclockwise in FIG. For this reason, the engagement between the pin 108 of the lever 105 and the end portion 80 of the rewind slider 75 is released, and the lock of the rewind slider 75 is released. Therefore, the rewind slider 75 doubles by the coil spring 78 for double acting, and the rewind state is released.

In addition, the pin 92 implanted in the slider 86 at the time of the sliding of the pressing slider 86 by the shut-off lever 70 is formed with the horizontal portion 82 of the cam groove 81 of the rewind slider 75. Although the inclined portion 83 passes through the axial portion of the incision, the pin 93 of the pressure slider 86 engages with the end 74 of the shutoff lever 70 and the slider 86. ), The pin 92 of the slider 86 causes the cam groove of the rewind slider 75 to be prevented from rotating in the clockwise direction about the pin 90 by the tension spring 94. It does not enter into the incision which the horizontal part 82 and the inclined part 83 of 81 are formed.

In addition, the pushed part 101 of the shutter-off slider 95 is pushed through the pin 93 by a rotation about the support shaft 71 based on the end detection of the shut-off lever 70, and the slider ( 95) swings upward in FIG. 15 against the coil spring 100. FIG. Thereby, the operation part 102 of this slider 95 pulls the pin 22 of the lock board 14, and this lock plate 14 is made against the spring spring 16 centering on the pin 15, Rotate counterclockwise in 2 degrees. For this reason, the reproduction button 5 which was locked by the projection 19 (refer FIG. 5) of the lock plate 14 doubles and this tape recorder is switched to the stop mode.

As described above, in the recording or reproducing mode, when all the roll band tapes are wound, the end wind is detected by stopping the rail bands 25, and the rewind operation is performed in connection with this. After the tapes are all rewinded to the rails, the shutter is shut off to set the stop mode. Therefore, it becomes very convenient when continuing to play back the tape.

(3) orthotopic operation

This orbitite operation is an operation in which the rewound and playback are repeated indefinitely after the tape is wound on the rail engaging with the rail band 25 on the winding side in the recording or playback mode. If you play it repeatedly, it can be done automatically without any human hands.

In order to perform the orbitalite operation, the operation lever 131 is operated by the operation knob 131a and rotated in two stages as shown in FIG. As a result, the switching slider 110 is pressed against the pin 133 of the lever 131, and swings to the left against the coil spring 94 in FIG. 16, so that the fatigue part 123 of the slider 110 is moved. And the slider 110 are locked in a state where the lock portion 127 of the lock lever 124 is engaged.

In this state, therefore, as shown in FIG. 17, the contacting unit l19 of the slider 110 is driven by the swinging of the switching slider 110, whereby the contacting unit 119 and the pin 104 are formed. The switching lever 103 that is in contact with the through () becomes rotatable. For this reason, the pressure slider 86 engaged through the lever 103 and the pin 91 is connected to the pin (by the coil spring 94). 90) Rotate slightly clockwise as shown in FIG. The pin 92 of the slider 86 then comes in a position opposite the horizontal portion 82 of the cap groove 81 of the rewind slider 75.

In addition, due to the two-stage fluctuation of the switching slider 110, the pin 99 of the slider 110 engages the bent portion of the bending hole 97 of the shut-off slider 95, and thus the shutter-off slider Reference numeral 95 is rotated counterclockwise in FIG. 17 with the pin 98 as the center, and the pressed portion 191 of the slider 95 faces the pushed rider 86 and the pin 93. Get out of position. Therefore, even if the pressure slider 86 moves, the shut-off operation is not performed.

In the above state, a state in which the rail stand 25 on the winding side is stopped and the orbitalite operation is performed will be described with reference to FIG. 18.

The swing lever 43 swings about the point pin 48 against the coil spring 49 by the cam portion 52 of the cam gear 50. Furthermore, the swing lever 43 is provided at the tip of the lever 43. The pin 44 engages with the groove 42 of the detection lever 39. In the recording or reproducing mode, since the rail stand 25 is rotated counterclockwise in FIG. 18 with respect to the support axis 27, the detection lever 39 is the pin 40 of the intermediate lever 34. The counterclockwise rotation moment is received from the rail stand 25 (see FIG. 6). Therefore, the pin 44 of the swing lever 43 reciprocates between the right end and the pocket 45 in FIG. 18 of the groove 42 with the swing of the lever 43.

By the way, when the tape is completely wound on the rail in the cassette engaged with the rail band 25, the rail band 25 is stopped by the tension of the tape. For this reason, the rotation moment is not transmitted to the detection lever 39. Therefore, the pin 44 reciprocates between the right end of the groove 42 of the detection lever 39 and the pocket 47 with the swing of the swing lever 43. Since the pocket 47 is deeply formed toward the support shaft 27, when the pin 44 enters the pocket 47, the swing lever 43 is largely half-centered around the point pin 48 in FIG. 18. Rotate clockwise, and with this, the pin 57 of the swing lever 43 presses one end of the intermediate lever 55 to turn the lever 55 counterclockwise around the point pin 56 in FIG. Rotate in the direction.

By this operation, the pin 58 at the other end of the lever 55 pushes the side portion of the stop lever 59, and the stop lever 59 is held against the coil spring 61 so as to be point pin (Fig. 18). Rotate clockwise around 60). For this reason, the pin 68 of the drive gear 62 is separated from the tip of the stop lever 59, and the drive gear 62 is free to rotate. The drive gear 62 is integrally formed with a cam 69 and is in contact with one arm 73 of the off lever 70. In addition, since the shutter oppressor 70 is rotated counterclockwise in the state shown in FIG. 1 around the support shaft 71 except the coil spring 72, one side of the lever 70 The arm 73 gives the cam 69 a clockwise rotational force about the support axis 63 in FIG. 1 so that the radius of the cam 69 comes into contact with the small portion. Accordingly, the drive gear 62 integrally formed with the cam 69 rotates clockwise about the support shaft 63.

Then, the pinion 66 facing the engagement portion 64 of the drive gear 6 ions engages with the drive gear 62. The pinion 66 is fixed to the capstan 67 together with the primary wheel 51. The pinion 66 is rotated counterclockwise around the capstan 67 in FIG. Therefore, when the pinion 66 and the drive gear 62 are engaged with each other, the drive gear 62 is driven by the pinion 66 to rotate. The cam 69 of the drive gear 62 then rotates clockwise about the support shaft 63. Thereby, one arm 73 of the shut-off lever 70 is pushed by the cam 69, and this lever 70 moves clockwise around the support shaft 71 against the coil spring 72. It is driven to come to the state shown in FIG.

When the shutoff lever 70 rotates, the end portion 74 formed at the tip of the lever 70 presses the pin 93 of the pressure slider 86 to rotate the slider 86. FIG. Move upward as shown in. As described above, the slider 86 is rotated in the clockwise direction by the coil spring 94 about the pin 90 in FIG. 18, and the pin 92 implanted in the slider 86 is rewinded. Since the horizontal portions 82 of the cam grooves 81 of the slider 75 are opposed to each other, the rewind slider 75 is pushed through the pin 92 by the movement of the pressure slider 86 as shown in FIG. Move upward

The locksaver 105, which is in contact with the side of the rewind slider 75 through the pin 108, is rotated clockwise as shown in FIG. 18 around the point pin 106 by the coil spring 107. Thus, the pin 1008 of the lever 105 engages with the end portion 80 of the rewind slider 75. As a result, the rewind slider 75 is locked against the coil spring 78 for double acting.

As a result, the tape recorder becomes a rewind mode, and the tape wound on the rail engaged with the rail stand 25 on the winding side is rewinded to the rail engaged with the rail stand 24 on the supply side.

In addition, the rewind button 3 is moved by the rewind slider 75, which is fixed to the slider 75. Thus, the fatigue portion 11 of the rewind button 3 passes over the protrusion 17 of the lock plate 14 (see FIGS. 2 and 5). For this reason, although this lock board 14 rotates, the lock of the recording button 7 which was locked by the protrusion 21 of this lock board 14 is released by this. This is because the projection 21 for locking the recording button 7 of the lock plate 14 is lower than the projection 17 for locking the rewind button 3. Therefore, the playback button 5 locked by the projection 19 formed higher than the projection 17 is not unlocked by the rocking of the lock plate 14 accompanying the thrust of the rewind slider 75.

The recording slider 192 doubles by unlocking the recording button 7, and the switch switching slider 200 associated with the slider 192 and the second conversion lever 196 is shown in FIG. 18. Move upwards as shown. Therefore, the switch 187 associated with the slider 200 and the leaf spring 205 switches the recording / playback circuit from the recordable state to the playable state. In addition, since the radio switch can be switched off by the pressing slider 86, the radio shuts off when the tape is completely wound even when the radio is received and recorded on the tape. That is, the arm 138 of the radio release lever 135 is formed long, even if the pressure slider 86 rotates clockwise by the coil spring 94, the pin 93 of the pressure slider 86 is a radio. Opposite the arm 138 of the release lever 135, and when this pin 93 is pressed and moved by the shovel lever 70, the radio release lever 135 is held against the coil spring 137. The pin 136 is rotated counterclockwise in FIG. 18. For this reason, the protrusion piece 139 of the radio release lever 135 presses the protrusion 143 of the lock lever 140, and at the same time as the shut-off operation, the lock lever 140 is moved around the pin 141. Rotate clockwise as shown at 10 degrees.

Therefore, the engagement between the pin 144 of the lever 140 and the lock portion 148 of the lock slider 145 is released so that the lock slider 145 is moved to the right side as shown in FIG. 10 by the coil spring 151. Go to. As a result, the pin 144 of the lock lever 140 engages with the lock portion 147 of the lock slider 145, and at the same time, the pin 154 of the radio switching lever 153 is connected to the pressure-pressed portion 152 of the lock slider 145. ), The lever 153 rotates counterclockwise as shown in FIG. 10 around the support shaft 132. In response to the double acting of the lock slider 145, a radio switching switch (not shown) is switched and shut off.

18 shows the state when the drive gear 62 is rotated about 270 ° in the state shown in FIG. 1, the drive gear 62 is rotated about 90 ° again, and the pin of the gear 62 is rotated. 68 contacts the tip of the stop lever 59 to stop the rotation. In connection with this, the shutoff lever 70 and the coil spring 72 are pulled and rotated counterclockwise about the pin 71. For this reason, the press slider 86 pressed by the shutter oppressor 70 through the pin 93 is pulled by the tension spring 94 for double acting, and doubles as shown in FIG. At the time of double acting, the pin 92 of the slider 86 is guided to the inclined portion 83 of the cam groove 81 of the rewind slider 75 which is locked by the lock lever 105. The slider 86 is rotated counterclockwise against the coil spring 94 in FIG. 19 around the pin 90. Therefore, the double-acting pressure slider 86 is double-rotated as shown in FIG. 19, and the pin 92 of the slider 86 is different from the horizontal portion 82 of the cam groove 81 of the rewind slider 75. It is not facing.

When the rewind slider 75 is swung and locked by the lock lever 105 as described above, the winding operation is performed. Even during this rewind operation, the swing lever 43 swings around the point pin 48 by the cam portion 52 of the cam gear 50 against the coil spring 49. Furthermore, the swing lever 43 The pin 44 provided at the tip is engaged with the groove 42 of the detection lever 39. In the rewind state, since the rail stand 25 is rotated in the tense direction in FIG. 20 with respect to the support shaft 27, the detection lever 39 is clockwise through the pin 40 of the intermediate lever 34. Of the swing lever 43, the pin 44 of the swing lever 43 moves to the position of FIG. 20 of the groove 42 with the swing of the lever 43. As shown in FIG. Therefore, the right end and the pocket 46 are reciprocated.

By the way, when the tape wound on the rail in the cassette engaged with the rail zone 25 is completely rewinded, the rail zone 25 is stopped by the tension of the tape. As a result, the rotation moment is not transmitted to the detection lever 39. Therefore, 44 accompanied by the swing of the swing lever 43 reciprocates between the right end of the groove 42 of the detection lever 39 and the pocket 47. Since the pocket 47 is deeply formed toward the support shaft 27, when the pin 44 enters the pocket 47, the swing lever 43 is largely half-centered around the point pin 48 in FIG. 20. Rotate clockwise, and consequently, the pin 57 of the swing lever 43 presses one end of the intermediate lever 55 to move the lever 55 counterclockwise around the point pin 56 in FIG. Rotate in the direction.

By this operation, the pin 58 at the other end of the lever 55 presses the shaft portion of the stop lever 59, and the stop lever 59 is moved against the coil spring 61 to FIG. In the clockwise motion around the point pin (60). For this reason, the drive gear 62 is free to rotate. The drive gear 62 is integrally formed with a cam 69, and is in contact with one arm 73 of the shutoff lever 70. Moreover, since the shutter oppressor 70 is rotated in the counterclockwise direction in the state shown in FIG. 1 about the support shaft 71 by the coil spring 72, one arm of the lever 70 is rotated. Reference numeral 73 imparts a clockwise rotational force about the support shaft 63 in FIG. 1 so that the radius of the cam 69 is in contact with the small portion. Accordingly, the drive gear 62 integrally formed with the cam 69 rotates clockwise about the support shaft 63.

Then, the pinion 66 facing the engagement portion 64 of the drive gear 62 meshes with the drive gear 62. The pinion 66 is fixed to the camston 67 together with the primary wheel 51. The pinion 66 is rotated counterclockwise around the camston 67 in FIG. . Therefore, the pinion 66 and the drive gears 62 and 62 mesh with each other, and the drive gear 62 is driven to rotate by the pinion 66. The cam 69 of the drive gear 62 then rotates clockwise about the support shaft 63. Thereby, one arm 73 of the shut-off lever 70 is pushed by the cam 69, and this lever 70 moves clockwise around the support shaft 71 against the coil spring 72. When it is driven, it is in the state shown in FIG.

When the shutoff lever 70 rotates, the end portion 74 formed at the tip of the lever 70 presses the pin 93 of the pressure slider 86 to cause the slider 86 to move. When the slider 86 is swinging, the pin 92 fixed to the slider 86 presses the arm 105a of the lock lever 105 to depress the lever 105 against the coil spring 107 so that the point pin ( 106, it rotates counterclockwise in FIG. Therefore, engagement between the pin 108 of the lever 105 and the end of the rewind slider 75 is released, and the lock of the rewind slider 75 is released. Therefore, the rewind slider 75 doubles by the double-coiled coil spring 78, and the rewind state is released.

In addition, the pin 92 identified in the slider 86 at the time of the sliding of the pressing slider 86 by the shutter oppressor 70 is formed with the horizontal portion 82 of the cam groove 81 of the rewind slider 75. Although the inclined portion 83 passes through the side of the cut, the pin 93 of the pressure slider 86 engages with the end 74 of the shut-off lever 70 Since the slider 86 prevents the rotation of the slider clockwise about the pin 90 in the clockwise direction in FIG. 20 by the tension spring 94, the pin 92 of the slider 86 is described above. The horizontal portion 82 and the inclined portion 83 of the cam groove 81 of the rewind slider 75 do not enter the cutout.

At this time, since the shutter off slider 95 is rotated counterclockwise as shown in FIG. 20 by the pin 99 of the switching slider 110, the shutter-off lever 70 ) Is not rotated, and the sharp slider 95 is not pressed by the pin 93 of the pressure slider 86. Therefore, the shift operation is not performed based on the end detection of the rewind.

As described above, the lock of the rewind slider 75 is released, but the pressure slider 86 which releases the lock of the rewind slider 75 is accompanied by a double rotation of the shut off lever 70 and the coil spring 94. Double acting by In this double acting state, as shown in FIG. 21, since the shutter oppressor 70 is separated from the pin 93 of the pressure slider 86, the pin 90 of the pressure slider S6 by the lever 86 is reduced. In FIG. 21 centering on), the regulation of rotation as a clockwise direction is cancelled. For this reason, the pressure slider 86 rotates clockwise centering around the pin 90 by FIG. 21 by the coil spring 94, and the pin 92 of this slider 86 of the rewind slider 75 is carried out. It moves to the position which opposes the horizontal part 82 of the cam groove 81. As shown in FIG. Thereby, it is set as the state which can be rewound again by the next thrust of the press slider 86. FIG.

Also, even during the rewind operation, the play button 5 remains locked by the lock plate 14, so that when the rewind slider 75 is unlocked, the tape recorder is switched to the regeneration state, and the reel zone on the supply side is The tape rewinded to the rail engaging with (24) is sequentially sent out and reproduced.

In this regeneration operation state, the swing lever 43 swings about the point pin 48 against the coil spring 49 by the cam portion 52 of the cam gear 50. Furthermore, the lever 43 The pin 44 provided at the tip of the locker engages the groove 42 of the detection lever 39. In the regeneration mode, since the rail stand 25 is rotated counterclockwise in FIG. The counterclockwise rotation moment is received from the rail stand 25 (see FIG. 6). Therefore, the pin 44 of the swing lever 43 is connected to the right end and the pocket 45 in FIG. 22 of the groove 42 with the swing of the lever 43. I am reciprocating between.

By the way, when the tape is completely wound on the rail in the cassette engaged with the rail band 25, the rail band 25 is stopped by the tension of the tape. As a result, the rotation moment is not transmitted to the detection lever 39. Therefore, the pin 44 reciprocates between the right end of the groove 42 of the detection lever 39 and the pocket 47 with the swing of the swing lever 43. Since the pocket 47 is deeply formed toward the support shaft 27, when the pin 44 enters the pocket 47, the swing lever 43 is largely half-centered around the point pin 48 in FIG. 22. Rotating clockwise, with this, the pin 57 of the swing lever 43 presses one end of the intermediate lever 55 so that the lever 55 is half-centered around the point pin 56 in FIG. Rotate clockwise.

By this operation, the side of the pin 58 and the stop lever 59 of the other end of the lever 55 is pressed, and the stop lever 59 is held against the coil spring 61, and the branch pin ( Rotate clockwise around 60). For this reason, the pin 68 of the drive gear 62 is separated from the tip of the stop lever 59, and the drive gear 62 is free to rotate. The drive gear 62 is integrally formed with a cam 69 and is in contact with one arm 73 of the shutoff lever 70. Moreover, since the shutter oppressor 70 is rotated in the counterclockwise direction in the state shown in FIG. 1 about the support shaft 71 by the coil spring 72, one arm of the lever 70 is rotated. Reference numeral 73 imparts a clockwise rotational force about the support axis 63 in FIG. 1 so that the cap 69 is in contact with the small portion of the cam 69. Accordingly, the drive gear 62 integrally formed with the cam 69 rotates clockwise about the support shaft 63.

Then, the pinion 66 facing the engagement portion 64 of the drive gear 62 meshes with the drive gear 62. The pinion 66 is fixed to the capstan 67 together with the primary wheel 51, and rotates counterclockwise about the capstan 67 in FIG. 1 as long as the power switch is included. Therefore, when the pinion 66 and the drive gear 62 engage, the drive gear 62 is driven to rotate by the pinion 66. The cam 69 of the drive gear 62 then rotates clockwise about the support shaft 63. Thereby, one arm 73 of the shut-off lever 70 is pushed by the cam 69, and this lever 70 moves clockwise around the support shaft 71 against the coil spring 72. It is driven to come to the state shown in FIG.

When the shutoff lever 70 rotates, the end portion 74 formed at the tip of the lever 70 presses the pin 93 of the pressure slider 86 to move the slider 86 as shown in FIG. Move to. As described above, the slider 86 is rotated in the clockwise direction by the coil spring 94 about the pin 90 in FIG. 22, and the pin 92 implanted in the slider 86 is Since it opposes the horizontal portion 82 of the cam groove 81 of the rewind slider 75, the rewind slider 75 is pushed through the pin 92 by the movement of the pressure slider 86 and shown in FIG. Move upward as shown.

Then, the lock lever 105, which is in contact with the side of the rewind slider 75 through the pin 108, is rotated clockwise as shown in FIG. 22 by the coil spring 107 about the spot plate 106. Thus, the pin 108 of the lever 105 engages with the end portion 80 of the rewind slider 75. As a result, the rewind slider 75 is locked against the coil spring 78 for double acting. As a result, the day precoder becomes a rewind mode again, and the tape which has been wound on the rail engaged with the rail stand 25 on the winding side is rewinded to the rail engaged with the rail stand 24 on the supply side.

As described above, in the orthotopic operation, the rewind and playback operations can be repeated indefinitely following the end of the recording or playback mode. Therefore, when the same tape is repeatedly played back, it can be performed automatically without any human hands, which is very convenient.

As mentioned above, although the shutter-off operation, the orbit winding operation, and the orificate operation of the tape recorder have been described, the tape recorder is provided with a mechanism for preventing the shut-off operation during the cue and the viewing.

Next, it demonstrates based on FIG.

The cue and the view mode respectively feed or rewind the tape temporarily by pressing the feeding button 6 or the rewind button 3 in the playback mode. The tape running is temporarily stopped at the time of switching to these cues or revues. However, since the shutter-off operation is difficult at this time, a shut-off prevention mechanism for the cue and revue is provided.

The revue operation is pushed out by pressing the rewind button 3 to lightly swung the rewind slider 75 fixed to the button 3. In addition, the cue operation is exhibited by lightly moving the feeding slider 170 which is fixed to this button 6 by pressing the feeding button 6. When the rewind slider 75 swings, the pressing section 159 provided on the slider 75 presses the front end 161 of the intermediate lever 160 to move the lever 160 against the coil spring 163. Thus, in FIG. 23, the point pin 162 is rotated clockwise.

On the other hand, when the feeding slider 170 is moved, the pressing section 171 of the slider 170 presses one end 169 of the second intermediate lever 166 to push the lever 166 to the coil spring 168. ) Rotates counterclockwise in FIG. 23 centering on the pin 167. As a result, the bending piece 172 of the lever 166 presses the intermediate lever 160 to rotate the lever 160 clockwise about the pin 162 as well. In this way, the operation of the cue and the revue are both detected as the clockwise rotation in FIG. 23 centering on the pin 162 of the intermediate lever 160.

Then, by the clockwise rotation in FIG. 23 centering on the pin 162 of the intermediate lever 160, the restricting portion 164 of the lever 160 moves downward in FIG. Accordingly, the shutoff detection control lever 173, which was contacted through the bent piece 175 by the restricting portion 164 and regulated rotation, is rotated around the point pin 167 by the coil spring 174. Rotate in the counterclockwise direction. Then, the pressing portion 177 of the lever 173 presses the pin 178 mounted on the detection lever 39, and the detection lever 39 is implanted in FIG. Give rotation moment clockwise. Accordingly, the detection lever 39 is in the same state as the regeneration mode, and the pin 44 of the swing lever 43 is the right end and the pocket 45 in FIG. 23 of the groove 42 of the detection lever 39. The reciprocating motion is performed between the two and, and the pocket 47 does not enter.

Therefore, during the switching operation to the poo or revue, the end detection is not performed even if the tape is temporarily stopped, and the shut-off operation is not performed. The shut-off prevention mechanism at the time of the cue or the lavatory operation is particularly effective during the levitation operation. This is because the reel stage 25 is always stopped once when the lave right operation is performed in the reproduction mode, and the rail stand 25 is always stopped.

In addition, this prevention mechanism is configured to operate during cue and revue operation, but not during feeding and rewinding. That is, in the feeding and rewind mode, the feeding button 6 and the rewind button 3 are pushed to the locked state by the lock plate 14, respectively, but the feeding slider 170 and the rewind slider 75 are thereby pushed. As shown in FIG. 24, the thrust is greatly increased compared to the operation of the cue and the revue.

Therefore, these sliders 170 and 75 rotate the intermediate lever 160 greatly, either directly or through the second intermediate lever 166, respectively. When the intermediate lever 160 rotates clockwise largely around the point pin 162 against the coil spring 163 as shown in FIG. 24, the pressing portion 165 of the lever 160 detects the shut-off. The pressing member 176 of the regulating lever 173 is pressed to rotate the regulating lever 173 against the coil spring 174 counterclockwise in FIG. 24 with respect to the point pin 167. For this reason, the press part 177 of this lever 173 is spaced apart from the pin 178 of the detection lever 39. As shown in FIG. Therefore, the detection lever 39 does not receive the rotation moment by the control lever 173, and the prevention of the shutoff detection is released. As a result, when the rail stand 25 is stopped in the feeding or rewind mode, end detection is performed, and the shut-off operation, the ortho wind winding operation, and the orbital feeding operation are sequentially performed.

In this tape recorder, since the mechanism related to the auto shut-off, the ortho wind and the orbitite operation and the feeding operation mechanism are configured to operate independently of each other, the orbitite and the ortori wind Even when recording, reproducing or rewinding is performed by switching to, the cue operation can be performed by pressing the feeding button 6, which is very easy to use.

However, when the rewinding operation is performed by switching to orifice or ortori wind, the rewind slider 75 to which the rewind button 3 is fixed is locked by the lock plate 105 in the energized state. The rewind operation cannot be pressed by pressing the rewind button 3. In addition, during the rewind operation in the oritolite or the orthowind, the rewind slider 75 is greatly moved, and thus the head substrate (not shown) regrets sufficiently, so that the tape and the head are brought into contact with each other. No reverberation sound occurs.

As mentioned above, although the Example which applied this invention to the tape recorder was described, this invention is not limited to the said Example, A various change is possible based on the technical idea of this invention.

For example, the present invention can be applied to various recording and reproducing apparatuses such as cassette type video tape recorders in addition to tape recorders.

As apparent from the foregoing description, the present invention provides an end detection unit for detecting the end of the recording medium by stopping the reel, three switching operation units such as auto shutoff, ortho wind, and orthophyte; And an operating mechanism that operates in relation to the traveling drive portion of the recording medium, and when the end of the recording medium is detected by the end detecting portion, by the operating mechanism on the basis of a switching operation of the switching operation portion. The recording / playback apparatus main body is configured to perform auto shut-off, ortho wind, and orbitite operations respectively.

Therefore, according to the present invention, the three operations of auto shutoff, ortho wind and orthorite are automatically performed only by the switching operation, and a very convenient recording and reproducing apparatus can be provided.

In addition, since the end detection is performed by stopping the rail, unlike the use of a tape counter or the like, the end detection can be surely performed regardless of the length of the recording medium or the conveying speed.

In addition, since the operation mechanism operates in relation to the drive system of the recording medium, in particular, there is no need to provide driving means such as a plunger solenoid, and the apparatus is not large and can be configured inexpensively.

Claims (1)

In the recording and reproducing apparatus, which is shown in the drawing and configured to perform recording and / or reproducing by using a recording medium as described above in the main text, an end detection unit for detecting the end of the recording medium by stopping the rail. And an switching mechanism for switching three types of auto shutoff, ortho winding and orthotopic, and an operation mechanism that operates in relation to the driving drive of the recording medium. When the end of the recording medium is detected by means of the switching operation of the switching operation unit, the recording / reproducing apparatus main body performs each operation of auto shut-off, ortho wind and orthotopic by the operation mechanism. And a recording / playback apparatus characterized by the above-mentioned.

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