KR930000750Y1 - Cassette auto-ejecting device for dat - Google Patents

Abstract

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Description

Automatic Cassette Tape Extraction Device for Digital Audio Tape Recorder

1 is a plan view showing a conventional cassette front loading device with the tray ejected.

2 is a bottom view of the statue.

Figure 3 (a) (b) is a cross-sectional view showing the cassette lifting mechanism portion of the statue.

Figure 4 (a) (b) is a top and bottom perspective view of the in-phase die cassette tape.

5 to 12 is a view showing the configuration and operation of the cassette front loading apparatus according to the present invention, Figure 5 is a full exploded perspective view of the in-phase.

(A) and (b) are side and cross sectional views of the cassette tape before being loaded.

Figure 7 (a) (b) is a side view and a sectional view of the state just before the horizontal movement of the cassette holder is completed and the slider of the cassette is peeled off during the loading of the cassette.

8A and 8B are a side view and a sectional view showing a state in which the cassette tray is overstroked and the cassette slider is peeled off and the cassette tape is moved vertically while the cassette holder is horizontally moved.

Figure 9 (a) (b) is a side view of the cassette is loaded.

(A) and (b) of FIG. 10 show that the cassette tray is overstroked when the horizontal movement of the cassette holder is completed, the cassette slider is closed, and the cassette is ejected from the rubber pressing roll of the cassette holder to be easily picked up by the user. Side view and cross section of the unloading completion.

Figure 11 (a) (b) (c) is a side view showing the position detection switch mechanism according to the present invention, (a) is the upper terminal and the middle terminal of the lift position is connected in the cassette tray ejected state (B) is a side view showing the state in which the middle terminal of the leaf switch is separated from the upper and lower terminals when the cassette tray is loaded, and (c) is the bottom of the middle terminal of the leaf switch when the cassette tray has been loaded. Side view showing contact with terminal.

* Explanation of symbols for main parts of the drawings

70: cassette 73: body

74: slider 77: guide groove

100: main body 101,102,103: first, second, third guide ball

104: base plate 105: both side brackets

106: vertical portion 110: cassette tray

111,112, 1st, 2nd guide hole 113: Both side slide plate

114 door 115 support plate

116: vertical portion 117: guide groove

118: vertical portion 119: guide pin

120: ejection protrusion 120 ': lead-out protrusion

121: rack 130: cassette holder

131: guide pin 132: through hole

133: release projection 134: hook

135: both sides 136: shaft

137: rubber pressing roll 140: lifting plate

141: both sides 142: guide pin

144: guide pin 150: rotating plate

151: shaft 152: both sides

153: connecting groove 160: drive gear

161: Waiting gear 162: Small gear

163: cam groove 164: shaft pin

170: capstan motor 171: power transmission means

172: Worm 180: switch lever

181: shaft pin 182: life switch

183: protrusion 184: tension spring

185: stop pin 186,187: upper and lower terminals

188: middle terminal

The present invention relates to an automatic cassette tape extraction apparatus of a digital audio tape recorder (DAT), and to a cassette tape automatic extraction apparatus of a tray type D for loading a cassette horizontally and vertically.

Conventionally, the DTI mounts the cassette tape with the audio tape on the reel table inside the device, pulls the tape out of the cassette, mounts it on the rotating head drum, and records and plays back the tape while driving the tape with the driving force of the capstan motor. In such a die, the first embodiment of the conventional cassette front loading apparatus for transferring the cassette tape from the outside of the machine to the inside of the machine will be described in detail with reference to FIG. .

In the drawing, 1 is a base plate, 2 is a straight line reciprocating cassette tray, and 3 is moved together with the cassette tray 2 to carry the DA cassette 70 (see also FIGS. 4 and 5). Carrying cassette holder, 4 is a loading motor for loading the cassette tray (2) and the cassette holder (3), 5 is a cassette invoice motor for moving the cassette holder (3) down a certain length after the horizontal movement, 6 is a cassette ( Slider open plate for opening the slider 74 of 70, 7 is a push lever that seats the cassette 70 in the cassette holder 3 when the cassette 70 is loaded, 8 is the cassette when the cassette 70 is unloaded. A takeout lever for taking out 70 from the cassette holder 3, 9 is an operating gear for transmitting a driving force of the cassette lifting motor 5, 10 is interlocked with the operating gear 9 to open the slider release plate 6; Development operating plate to operate, 11 is linked to the operating gear (9) cassette holder ( 3) and the elevating operation plate for lowering the cassette 70, respectively.

Guide rods 12 are fixed to both sides of the base plate 1 in parallel to each other, and linear bearings 14 to which guide rods 12 are inserted are fixed to both side plates 13 of the cassette tray 2. As a result, the cassette tray 2 moves in a straight line on the guide rod 12.

Rotating levers 16 are connected to both side plates 15 of the cassette holder 3 so as to be movable by connecting pins 17, and each pivoting lever 16 is connected to both side plates 13 of the cassette tray 2, respectively. The shaft pin 18 is pivotally rotatable, and the torsion spring 19 that supports the pivoting lever 16 in a clockwise direction is fixed to the shaft pin 18.

The loading motor 4 is fixed to the base plate 1 and the pulley 22 connected to the pulley 20 and the belt 2l fixed to the shaft of the loading motor 4 on the bottom of the base plate 1, A gear 24 connected to the gear 23 integrally therewith, and a pulley 27 connected to the wire 26 on the pulley 25 integral with the gear 24 are installed, and the wire 26 is connected to the cassette tray 2. It is connected to the connecting piece 27 fixed to the.

Accordingly, the cassette tray 2, the cassette holder 3, the rotation lever 16, and the extraction lever 8 linearly move together by the driving of the loading motor 4.

The lifting motor 5 has a pulley 28 fixed to its shaft and connected to the pulley 30 and the belt 31 integrally formed on the worm 29 so that the worm 29 is engaged with the operating gear 9. . The small gear 32 is formed concentrically on the lower surface of the actuating gear 9, and the cam groove 33 is formed around it. The small gear 32 is engaged with the rack 34 formed on one side of the elevating operation plate 11, the cam groove 33 is a shaft pin (below) in the lower operation gear 9 of the base plate (1) Cam pin 37 of the cam lever 36 condensed into the 35 is inserted and the cam pin 37 is a rectangular guide hole 39 of the open operating plate 11 through a through hole 38 formed in the base plate (1) The cam lever 36 and the open operation plate 10 are connected to the tension spring 40.

The slider opening plate 6 is connected to the opening operation plate 10 by a shaft 41, and the slider opening plate 6 and the opening operation plate 10 are connected by a tension spring 42. In addition, the slider opening plate 6 has a two-stage cam step in which the cassette hook piece 43 is formed at the front end and the contact piece 44 is formed at the rear end so that the contact piece 44 has the inclined surface of the elevating operation plate 11. The contact portion 45 is in contact with each other.

On one side of the elevating operation plate 11 of the base plate 1, the pivoting lever 46 is fixed to the support piece 47 protruding from the base plate 1 by the shaft 48 and at the same time as the tension spring 49. The rotary lever 16 is rotated while being pushed and rotated by the protrusions 50 when the elevating operation plate 11 moves forward.

When the cassette tray 2 is loaded, the push lever 7 rotates while contacting the contact plate 41 bent downward in the front part of the base plate 1, and the gear and cam are pushed through the interlock mechanism. The rod 52 is rotated.

The cassette ejection lever 8 is fixed to the support plate 53 fixed between the side plates 13 and 13 of the cassette tray 2 by the shaft pin 54, and the ejection lever 8 and the support plate 53 are ejected. Tension springs 55 which hold the lever 8 counterclockwise are connected, and the inclined cam 56 is fixed to a predetermined portion of the base plate 1 so that the takeout lever 8 is slid.

The loading motor 4 and the cassette lift motor 5 are first, second, third, and fourth position detection switches 61, 62, 63, respectively fixed to a predetermined portion of the base plate 1. The direction of rotation or stopping is determined by the combination of ON and OFF signals.

4 and 5 show a die cassette. As shown in the drawing, the tape cassette 70 has a slider 74 that slides on a main body 73 in which a self-tape 71 is wound around a reel 72. The reel hub nozzle ball 75 is formed at both sides of the main body 73, and the slider 74 has a through hole coinciding with the reel hub exposure hole 75 of the main body 73 when opened. 76) is formed. In addition, guide holes 77 into which the release protrusions 57 of the cassette holder 3 are inserted are formed at both sides of the through hole 76, and at the same time, the lockers 78 protruding from the inside of the main body 73 are formed in both guide grooves 77. Lock holes 79 are inserted into the rear end portion, and the protective cover 80 is hinged to the main body 73, and the locking piece 58 of the cassette holder 3 is attached to the protective cover 80. The groove 81 into which) is inserted is formed.

The die cassette 70 as described above is loaded and unloaded into the die machine by the front loading device. The loading operation is vertically vertical to the step of horizontally moving the inside of the silile machine to the cassette holder 3. It is performed in the step of being seated on the reel table installed in the base plate 1, the slider 74 is opened during horizontal movement, and the protective cover 80 is developed during vertical movement.

Hereinafter, the operation of loading and unloading a cassette by the conventional cassette front loading apparatus as described above will be described in detail.

1 and 2 show that the cassette tray is ejected, in which the protrusion 59 of the connecting piece 27 fixed to the cassette tray 2 is brought into contact with the first position detection switch 61. ON) and the loading motor 4 is stopped.

In this state, when the cassette 70 is inserted into the cassette tray 2 and the cassette tray 2 is slightly pushed inward (backward), the first position detection switch 61 is turned off and the loading motor 4 When the cassette tray 2 is pushed inward with the cassette holder 3 and the cassette 70 by the driving force and the push lever 8 contacts the contact plate 51 and rotates, The push rod 52 moves in the guide hole 60 of the cassette tray 2 through the interlocking mechanism, and the cassette 70 moves slightly inward while being pushed by the push rod 52 to release the cassette holder 3. The projection 57 is inserted into the guide groove 77 thereof to unlock the slider 74. At the same time, the locking piece 58 is inserted into the insertion groove 81, and the locking piece 58 is inserted into the locking piece. A rubber crimping roll (65) attached to the end of the slider (74) and attached adjacent to the connecting pin (17) of the cassette holder (3). The upper surface is pressed down to support it stably.

After the cassette 70 is seated in the cassette holder 3 in such a state, the cassette tray 2, the cassette holder 3, and the cassette 70 continue to move inward with the driving force of the loading motor 4, so that the cassette tray When the projection 66 'formed at one side plate 13 of (2) is turned on by operating the two-position detection switch 62, the loading motor 4 stops and the horizontal movement of the cassette tray 2 is completed. As the cassette lifting motor 5 rotates, the worm 29 and the operating gear 9 rotate to move the lifting operation plate 11 meshed with the small gear 32 of the operating gear 9 to move forward. As the pin 66 falls from the third position detection switch 63, the third position detection switch 63 is turned off, and the slider which is in contact with the cam step 45 as the elevating operation plate 11 moves. As the contact piece 44 of the open plate 6 is lifted, the slider open plate 6 is rotated counterclockwise (based on FIG. 1) with respect to the axis 41, so that the image of the cassette 70 is rotated. As the operating gear 9 continues to rotate with the driving force of the elevating motor 5, the elevating operating plate 11 continuously moves forward, and at the same time, the lower surface of the operating gear 9 has a cam groove 33 and a cam lever ( By the operation of 36, the opening operation plate 10 moves backwards, and the slider opening plate 6 moves backwards together. As such, the slider opening plate 6 moves, so that the clasp 43 of the cassette main body 73 moves. Since the cassette body 73 moves backwards together at this time, the slider 74 is caught by the cassette holder 3 and the movement is stopped, so that the slider 74 is opened so that the through hole 76 and the main body ( The reel hub exposure hole 75 of 33) coincides.

Thereafter, as the operating gear 9 continues to rotate, the cam lever 36 interlocked with the cam groove 33 has its pin 37 in contact with the concentric portion of the cam groove 33 and the rotation is stopped. The plate 10 and the slider open plate 6 are also stopped, but the elevating operation plate 11 continues to move forward, and the projection 50 of the elevating operation plate 11 is rotated as shown in FIG. As the pivoting lever 16 rotates the pivoting lever 16, the cassette holder 3 connected thereto moves vertically downward, and is seated on the reel table coupled to a predetermined portion of the base plate 1. The protrusion 67 protruding from the open operation plate 10 operates the fourth position detection switch 64 so that the cassette lift motor 5 is stopped.

Summarizing the role of the position detection switch in the above process, if the state in which the first to fourth position detection switches 61 to 64 are pressed is ON, the first position detection switch 61 is When it is on, the loading motor 4 and the elevating motor 5 are stopped, and when the first position detection switch 61 is off and the third position detection switch 63 is on, the loading motor 4 is rotated forward to the first position. The motor rotates forward until the detection switch 62 is turned on. If the second position detection switch 62 is turned on while the third position detection switch 63 is turned on, the loading motor 4 stops and the lifting motor 5 rotates. The cassette 70 is seated on the reel table. When the cassette 70 is seated, the fourth position detection switch 64 is turned on by the protruding portion 67 of the elevating operation plate 11 to stop the elevating motor 5 and recognize the seating state of the cassette 70.

In the state where the cassette 70 is seated on the reel table, the tape driving mechanism pulls out the tape 71 embedded in the cassette 70, mounts it on the rotating head drum, and performs recording or reproduction while driving with the driving force of the capstan motor ( Rotating head drum, capstan motor and tape drive mechanism not shown).

When the ejection is performed after the playback and recording as described above, the contact pin 68 of the ejecting lever 8 connected to the cassette tray 2 when the cassette tray 2 is horizontally moved forward is connected. While taking out the inclined cam 56 fixed to the base plate 1 while rotating clockwise with respect to the shaft pin 54, the ejection pin 69 is inserted into the cassette holder 3 by a rubber seating roll 65. By slightly pushing the compressed cassette 70 forward, the cassette 70 can be easily picked up by the user.

The conventional die prote loading device as described above has a very complicated configuration in which the ejection mechanism for ejecting the cassette from the cassette holder can be easily picked up during cassette cassette mode. There is an augmented combination.

The present invention is designed to solve the conventional defect as described above, when the cassette holder is moved horizontally while the cassette holder is horizontally moved, the protrusion of the support plate fixed to the cassette is pushed the cassette while the cassette tray moves over a certain length. It is provided to take out from a holder, and it is for providing the cassette front loading apparatus of DY which a cassette taking-out mechanism is simplified.

Hereinafter, the present invention will be described in detail with reference to FIGS. 5 to 11.

The cassette tape loading apparatus according to the present invention has a main body 100, a cassette tray 110 that moves linearly in and out of the main body 100, and the cassette tray 110 as shown in FIGS. The cassette holder 130 and the elevating plate 140, which is installed in the) and the rotating plate 150 is provided on the rear portion of the main body 100.

In the main body l00, the brackets 105 are fixed to both sides of the base plate 110, and the first guide hole 101 and the second guide hole 102 are arranged in the same straight line on both side brackets 105. Each is formed, and the third guide hole 103 is formed long on the upper side. At the rear end of the first guide hole 101, the vertical portion 106 is integrally formed to be orthogonal.

The mall cassette tray 110 is composed of both side slide plates 113 positioned inside the bracket 105, a door 114 fixed to the front end thereof, and a support plate 115 fixed to the middle portion thereof.

The first guide hole 111 and the second guide hole 1l2 are formed in the same straight line on both side slide plates 113, and a vertical portion 116 is perpendicular to the rear end of the first guide hole 111. The guide pin 119 is integrally formed and fixed to the upper slide plate 113 is inserted into the third guide hole 103 of the bracket 105.

A pair of through holes 132 are formed in the cassette holder 130, and a release protrusion 133 and a locking piece 134 are formed at the rear portion of each through hole 132, respectively, and on both sides of the cassette holder 130. Guide pins 131 fixed in the middle of the rear part are inserted into the first guide holes 111 and 101 of the slide plate 113 and the bracket 105 and are formed on one side 135 of the front load side. 144 is inserted into the guide groove 117 formed on the inner surface of the one-side slide plate 113. The guide groove 117 is integrally formed with the vertical portion 118 at the end, like the first guide hole (111).

The lifting plate 140 has guide pins 142 fixed to the rear ends of both side surfaces 141 so that the guide pins 142 are formed on the slide plate 113 and the brackets 105. Each side is inserted into the 102, and both sides 141 of the elevating plate I40 and both sides 135 of the cassette holder 130 are connected to the shaft bar 136, and the cassette 70 is supported by the shaft bar 136. The rubber pressing roll 137 for fixing is fixed.

The guide surfaces 111, 112, and 119 support the cassette holder 130, the lifting plate 140, and the cassette tray 110 on the bracket 105, guide their horizontal movement, and provide a cassette holder ( Guide 130).

In addition, the guide pins 131 and 142 are horizontally aligned with the cassette holder 130 and the lifting plate 140 by the lengths of the first guide hole 101 and the second guide hole 102 of both side kits 105. And the guide pins 131 and 142 are in contact with the front end or the rear end of the first and second guide holes 101 and 102 of both side brackets 105, and their movement is stopped. The tray 110 may be further moved outward or inward by the length of the horizontal portion of the first and second guide holes 111 and 112 and the guide groove 117 formed on both side slide plates 113.

That is, the horizontal lengths of the first and second guide holes 111 and 112 and the guide groove 117 enable the overstroke of the cassette tray 110.

A takeout protrusion 120 is formed in the middle of the support plate 115 of the cast tray 110, and the inlet protrusion 120 ′ is fixed to both sides of the door 114 of the cassette tray 110.

On the one side bracket 105 of the main body 100, the drive gear 160, which has the air gear 161 and the small gear 162 integrally, and the cam groove 163 is formed on the surface thereof, is compressed by the shaft piece 164 and driven. The small gear 162 of the gear 160 is engaged with the rack 121 formed in the longitudinal direction on one side slide plate 113 of the cassette tray 110, and the base plate of the main body 100 is attached to the standby gear 161. The worm 172 which rotates by receiving the driving force of the known capstan motor installed in the 104 to the power transmission means 171 is engaged.

The power transmission means may use a pulley, a belt, a gear train, and the like, and its structure may be variously configured.

The pivoting plate 150 is fixed to an intermediate portion of the shaft 151 which is installed in a mandrel at the rear end of both side brackets 105 of the main body 100, and the sides of the pivoting plate 150 are 152 Connection grooves 153 into which the inserting portion 143 of the steel plate 140 is inserted are respectively formed, and the cam lever 164 is fixed to one side 152 of the rotating plate 150.

A sliding pin 165 is fixed to the front end of the cam lever 164 and inserted into the inner cam groove 163 of the cam gear 160.

In addition, the switch lever 180 is fixed to the filling pin l81 and the leaf switch 182 is fixed adjacent to the lower side of the first guide hole 101 at the front of the other side bracket 105 of the main body 100. The tension spring 184 which holds the switch lever 180 in a clockwise direction is fixed to the protrusion 183 of the switch lever 180 and the protrusion 107 of the other side bracket 105, and the switch lever 180 is fixed. On the upper side, a stop pin 185 for restricting rotation is fixed.

The leaf switch 162 includes upper and lower terminals 186 and 187 and an intermediate terminal 188, and a front end contact portion 189 of the intermediate terminal 188 includes a vertical portion of the first guide hole 101 ( 106).

The switch lever 180 is pressed by the front end portion 189 of the cassette tray 110 in contact with the first guide pin 131 of the cassette holder 130, and the rear end 190 of the cassette tray 110 is ejected. The middle terminal 188 of the switch 182 is pushed up so that the upper terminal 186 and the middle terminal 188 of the life switch 182 are in contact with each other.

Hereinafter, the operational effects of the present invention will be described.

6 (a) and (b) shows a cassette tray (l10) is completely open in the main body 100, in this state the guide pin 131 and the lifting plate 140 of the cassette holder 130 The guide pins 142 of the brackets 105 are in contact with the right ends of the guide holes 101 and 102 of the bracket 105. As shown in FIG. 11 (a), the guide pins 131 of the cassette holder 130 are switched levers. By pressing the tip of the 180, the rear end 190 thereof pushes the middle terminal 188 of the life switch 182 upwards so that the intermediate terminal 188 and the upper terminal 186 come into contact with the camster motor. When the power supply is cut off at 170 and the intermediate terminal 188 and the upper terminal 186 are in contact with each other, the DAT system control microprocessor recognizes that the cassette tray 110 is open. In this state, the pin 165 fixed to the distal end of the cam lever 164 is located at the concentric portion 166 of the cam groove 163 formed in the drive gear 160. The.

In this way, when the cassette 70 is inserted into the cassette holder 130 in the state where the tray 110 is embanked, and the cassette tray 110 is pushed inward slightly, the guide pin 131 of the cassette holder 130 is pushed inward. The switch lever 180 is rotated about the shaft pin 181 by the tension spring 184 as shown in FIG. 11 (b) so that the rear end 190 of the switch lever 182 is at the middle terminal l88 of the leaf switch 182. Since the intermediate terminal 188 is turned to the neutral position and turned off from the upper terminal (186) and the switch lever 180 is locked to the stop pin (185) so that it can no longer be rotated.

When the upper terminal 186 and the middle terminal 188 of the leaf switch 182 is off in this way, the power is supplied to the capstan motor 170 to rotate and the drive gear 160 interlocked with the circle 172 is counterclockwise. Direction, the cassette tray 110 engaged with the rack 121 by the small gear part 162 of the drive gear 160 is moved inward.

When the cassette tray 110 is moved inward as described above, the cassette holder 130 and the lifting plate 140 containing the cassette 70 are horizontally moved together to move the cassette holder 110 as shown in FIG. 7 (a) (b). The guide pin 131 of 130 is in contact with the bent portion 108, which is an intermediate portion of the horizontal portion 107 and the vertical portion 106 of the first guide hole 101 formed in the bracket 105.

In this case, the cassette holder 130 and the lifting plate 140 no longer move inward and stop, and the vertical parts 106 and 116 of the first guide hole 101 and the tray first guide hole 111 are stopped. A distance S for keeping the slider 74 of the cassette 70 open is maintained therebetween. In this state, if the cassette tray 110 further moves inward as the drive gear 160 continues to rotate, the slider 74 of the cassette 70 is caught by the locking pin 134 and no longer moves, and thus the main body 73 is moved. Only the slider 74 is completely opened until the first guide hole 111 of the tray 110 is moved to the distance S by being pushed inward by the inlet protrusion part l20 'formed inside the door 114, and FIG. (a) (b) state is reached, and at this time, the vertical portions 116 and 106 of the tray first guide hole 111 and the main body first guide hole 101 coincide with each other and the lifting plate 140 is inserted. The part 143 is inserted into the connecting groove 153 of the rotation plate 150.

When the drive gear 160 continues to rotate counterclockwise by the rotational force of the capstan motor 170 in this state, the pin 165 of the cam lever 164 moves the radius change portion l67 of the cam groove 163. Since the cam lever 164 rotates in the clockwise direction with respect to the shaft bar 151, and the rotating plate 150 rotates clockwise with the cam lever 164, the rotating plate 150 rotates in the clockwise direction. As it rotates, the elevating plate 140 rotates clockwise with respect to the guide pin 142 and the cassette holder 130 connected to the shaft 136 moves vertically downward, as shown in FIG. 9 (a) (b). As described above, the cassette 70 contained in the cassette holder 130 is seated on the feed reel table and the take-up reel table provided on the base plate 104.

As such, when the cassette holder l30 is moved downward, its rear end guide pin 131 is guided to the vertical portions 106 and 116 of the guide hole 101 and 111 of the main body 100 and the tray 110, and the tip portion thereof. The guide pin 144 moves downward through the vertical portion 118 of the guide groove l17 formed on the inner surface of the side plate 113 of the tray 110, and the protective cover 80 of the cassette 70 is lowered during the lowering. It is opened by a lid opening means (not shown).

As such, when the loading of the cassette 70 is completed, the guide pin 131 of the cassette holder 130 receives the intermediate terminal 188 of the life switch 182 as shown in FIG. ) Is bent downward from the neutral position is connected to the lower terminal 187 is stopped because the power to the capstan motor 170 is cut off.

When the cassette loading is completed as described above, a mode such as desired play is performed while driving the tape 71 embedded in the cassette 70 by the traveling mechanism installed in the base plate 100, and the cast 70 is to be ejected. Pressing a separate eject button (not shown) installed on the outside of the main body 100, the capstan motor 170 is rotated in the reverse direction is driven 160 is rotated in the clockwise direction to reverse the action of the cassette After the holder 130 moves vertically upward, the holder 130 moves toward the outside of the main body 100 together with the cassette tray 110. At this time, the ejection protrusion 120 of the support plate 115 fixed to the cassette tray 110 is a cassette holder ( Lightly pushing the cassette 70 on 130 is advanced. In this way, when the guide pin 131 of the cassette holder 130 is in contact with the right end of the first guide hole 101 of the bracket 105, it can no longer move forward, the guide holes 111 and 112 of the cassette tray 110. The cassette tray 110 is further advanced by the overstroke of), and the support plate 115 fastened to the cassette tray 110 is also advanced a bit and thus formed in the shaft rod 136 of the cassette holder 130. The cassette 70, which has been compressed by the rubber pressing 137, is pushed out from the cassette holder 130 while being pushed to the ejection protrusion 120 of the support plate 115 so that the user can easily pick up the cassette 70. do.

As described above, the present invention has a simple structure in which the cassette is automatically taken out from the cassette holder by the ejection protrusion of the support plate during the cassette ejection operation, thereby contributing to the miniaturization of the product and improving the productivity by simplifying the assembly process. This also has the advantage of contributing to cost reduction.

Claims (1)

A pair of parallel brackets 105, a cassette tray 110 having a door 114 fixed to a front end of both side slide plates 113, and a support plate 115 fixed to a middle portion thereof, and both side brackets ( The first and second guide holes 101, 111, 102, 112 formed on the 105 and the side slide plate 113, the cassette holder 130 containing the cassette 70, and the shaft It is fixed to both sides of the elevating plate 140 and the cassette holder 130 and the elevating plate 140 connected to the 136 and guides the horizontal movement of the cassette holder 130 and the elevating plate 140, and the cassette holder ( Guide pins 131 and 142 for guiding the vertical movement of 130 and a pivoting plate 150 which is fixed to the rear ends of the both side brackets 105 by the shaft bar 151 and rotates the lifting plate 140. In the provided tray type front loading apparatus of the DA, the cassette ejection protrusion 120 is integrally formed in the middle of the support plate 115 of the cassette tray 110 and the cassette tray 1 10) When unloading, the guide pin 131 of the cassette holder 130 is caught at the right end of the first guide hole 101 of both side brackets 105, and the cassette tray 110 is overstroked. 70) Automatic cassette tape extraction of a digital audio tape recorder, characterized in that configured to be taken out from the cassette holder (130).