JPS62172555A - Ejection device for magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To simplify the ejection by receiving the pushing of an ejection member at any time, storing the operation, opening a cassette holder automatically at the end of unloading and releasing the storage. CONSTITUTION:The locking of a cassette holder 102 is released by a hook 110 so long as the magnetic tape is drawn initially or the unloading is finished and a cassette is ejected. Further, the ejection is received in any timing of the stopping of loading end, during loading or unloading. That is, in depressing the operation section 121 of an EJ crank, the EJ crank is locked in the ejection bias state. Thus, the cassette holder 102 is released from the engagement of the hook 110 at the end region of the unloading of the magnetic and the locking of the biased state of the EJ crank is released. Thus, the ejection is simplified.

Description

[Detailed Description of the Invention] (,) Technical Field The present invention relates to an ejecting device for a magnetic recording/reproducing device.
More specifically, it is a magnetic recording and reproducing device that has a so-called loading device that allows a magnetic tape stored in a wound state inside a cassette to be pulled out to a position near a magnetic head or capstan located outside the cassette. The present invention relates to an ejecting device.

(b) Prior art The ejecting device for this type of magnetic recording/reproducing device is as follows:
In the conditions shown in ~■, the eject operation is not performed in order to protect the magnetic tape. That is, ■During the loading operation to pull out the magnetic tape from the cassette.

■ Unloading operation in which the magnetic tape that has been loaded is pulled into the cassette and stored.

■A state in which the magnetic tape is running.

Then, press operation of the eject operation button (eject operation) is accepted only when the magnetic tape in the loading completion state is stopped, and mechanically detects that the operation button has been pressed until the unloading completion state is reached. memorize it,
At the same time as unloading is completed, the cassette can be ejected, and at the same time, the memory that the operation button was pressed is cleared.

However, in the eject device of such a magnetic recording/reproducing device, the reception of the push operation of the eject operation button is only permitted when the magnetic tape is stopped running. Sometimes, even if I press the eject button, the eject operation does not occur.

There is a problem that the operability is poor.

In addition, in this type of conventional eject device, if the eject operation button is pressed immediately (or almost at the same time) after stopping the magnetic tape with the stop button, the cassette holder that holds the cassette will not be released and the cassette will be ejected. The cassette holder may not be able to be ejected, or the memory member may not be able to store the cassette even after the eject operation, and the cassette holder may remain slightly raised from the closed position (bottomed position 2). Sometimes,
If the magnetic tape is run in this state, the running height of the magnetic tape will not be at a fixed position, and proper recording and playback will not be possible. Further, in order to restore the floating cassette holder to its normal state, the cassette holder must be pressed again to the closed position, which is troublesome.

(c) Purpose The present invention has been made to solve the above-mentioned problems, and its purpose is to accept an eject push operation immediately after a cassette is installed in a magnetic recording/reproducing device, and to accept the eject push operation. To provide an eject device for a magnetic recording/reproducing device that mechanically retains memory and automatically opens a cassette holder when unloading is completed to enable removal of cassettes 1 to 1 and release the memory. It's about doing.

(d) Structure In order to achieve the above object, the present invention provides a magnetic recording and reproducing device having a loading device that pulls out a magnetic tape stored in a wound state in a cassette to a position near a capstan arranged outside the cassette. In the ejecting device of
and a trigger member that assumes the second position when the magnetic tape is pulled out, and a locking portion for locking the cassette holder that holds the cassette in the closed position, A hook member whose lock can be released only when one member is in a first position, and an eject operation that biases the hook member by a predetermined amount and applies a biasing force to the hook member in a direction to release the lock. and a memory member that maintains the biased state of the eject operating member when the trigger member is in the second position and releases the biased state when the trigger member assumes the first position. It is characterized by this.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, a magnetic tape 11 is stored in a wound state in a cassette 10, and an opening 12 for drawing out the tape is formed in the front surface of the cassette 10. Such a cassette 10 can be attached to a magnetic recording/reproducing device 13, and a multi-channel magnetic head 14, 15 is fixed to this magnetic recording/reproducing device 13. The magnetic recording/reproducing device 13 also includes a magnetic head 14.
Capstans 16 and 17 are provided on the downstream side of the magnetic head 15 and on the upstream side of the magnetic head 15, respectively. Furthermore, a motor 18 for driving tape loading is provided at the bottom of the magnetic recording/reproducing device 13, and the driving force of this motor 18 is as follows.

As shown in detail in FIG. 3, the driving force is transmitted to the shifter cam gear 20 via the driving force transmission system 19. That is, the rotational force of the motor 18 is the motor output shaft 19a→
Bevel gear 19b → Bevel gear 19c → Transmission shaft 19d →
The signal is transmitted to the shifter cam gear 20 through a transmission path from the spur gear 19e to the shifter cam gear 20.

Further, in FIG. 1, a support shaft 21.31 is installed below the mounting position of the cassette 10 of the magnetic recording/reproducing device 13, and a shifter cam gear 20 is rotatably attached to this support shaft 21. ing. This shifter cam gear 20 has a fan-shaped tooth surface 22, and this tooth surface 22 meshes with the spur gear 19e, which is the output part of the driving force transmission system 19. A fixing pin 23 is fixed on the shifter cam gear 20 as shown in FIG. 4, and one end of a tension spring 24 is attached to the fixing pin 23. Further, a support shaft 25 is installed on the outer side of the shifter cam gear 20, and a shifter driving arm 26 is rotatably attached to the support shaft 25, and is used to drive a shifter holder 40, which will be described later. A drive roller 25a is rotatably mounted. The other end of the above-described tension spring 24 is attached to one arm of the shifter drive arm 26, giving the shifter drive arm 26 a clockwise rotational habit.

On the other hand, the shifter cam gear 30 rotatably supported by a support shaft 31 installed at a position symmetrical to the support shaft 21 has a shape symmetrical to the shifter cam gear 20, and its tooth surface 32 is similar to the tooth surface 22. It meshes with the Furthermore, the above-mentioned fixing pin 23, tension spring 24, support shaft 25, drive roller 25a,
At positions symmetrical to the shifter drive arm 26, a fixing pin 33, a tension spring 34, a support shaft 35, and a drive roller 35a are provided.
, a shifter drive arm 36 is provided, and the shifter drive arm 3
6 is given a counterclockwise rotational habit.

Further, as shown in FIG. 4, the shifter cam gear 20 is provided with a guide elongated hole 20a so as to substantially follow the tooth surface 22. An implanted driven pin 44 is slidably fitted therein, and a shaft support 41 having a shaft hole is formed at the other end of the shifter holder 40.

A shaft 42 is implanted and fixed in the shaft hole of the shaft support 41, and the lower part of the shaft 42 fits into the arc-shaped shifter guide groove 13a to be guided during the loading operation. Further, a tape shifter 43 is rotatably attached to the upper middle part of the shaft 42 via a ball bearing (not shown in the figure), and further near the upper end (in FIG. 3) and the lower end of the shaft 42. The middle part is magnetic tape 1
In the final drawer area of No. 1, it comes into contact with a V-groove 59 of an adjustment plate 52 and a V-groove 58 formed in a stopper body 51, which will be described later, to regulate its position.

A shifter holder 60 symmetrical to the shifter holder 40 is also provided on the shifter cam gear 30 side, and includes a shaft support 61, a shaft 62, .
A tape shifter 63 and a driven pin 64 are respectively provided, and a guide elongated hole 30a is provided in the shifter cam gear 30.
(not shown) is formed.

The shifter stopper 50 described above has a stopper body 51 fixed to the magnetic recording/reproducing device 13, as shown in detail in FIGS. A V-groove 58 is formed to lock the lower end and regulate the position, and a V-groove 59 formed at the tip of the adjustment plate 52 is formed at the top end to lock the upper end of the shaft 42 and regulate the position. It is provided.

The adjustment plate 52 is formed of an inverted leaf spring material, and the tip (lower end) of its falling portion is fixed to the stopper body 51 by a fixing screw 53.

The intermediate portion is moved in the horizontal direction in the drawing of the V-groove 59 of the adjustment plate 52 against the biasing force of the adjustment plate 52 itself in the counterclockwise direction when the fixing screw 53 of the adjustment plate 52 is set in the center. An adjustment screw 54 is attached for fine adjustment. Also,
A long hole 57 is drilled in the flat surface of the adjustment plate 52, and a screw is inserted into the long hole 57 to fix the adjustment plate 52 in the direction perpendicular to the page in FIG. 3, and in the left-right direction in FIG. Eccentric screw 56 for fine adjustment in the twisting direction using 53 as a fulcrum
is engaged. In addition, a fixing screw 5 for fixing the adjustment plate 52 after fine adjustment is provided at the intermediate part between the elongated hole 57 and the V-groove 59.
5 is provided.

A shifter stopper 70 similar to the shifter stopper 50 is provided at a symmetrical position on the left side of the magnetic recording/reproducing device 13, and this shifter stopper 70 is also connected to the stopper body 71. Adjustment plate 72, fixing screw 73, adjustment screw 74,
Fixing screw 75, eccentric screw 76, long hole 77, Vil178
It is composed of ゜79.

On the other hand, a spindle 81 is fixed in front of the magnetic heads 14 and 15 of the magnetic recording and reproducing device [13, and the middle portion of a pinch roller arm 80 is rotatably supported on this spindle 81. A support shaft 82 is fixed to the tip of the support shaft 80, and a pinch roller 83 is rotatably supported on the support shaft 82. Further, a support shaft 91 is fixed at a position symmetrical to the support shaft 81, and a pinch roller arm 9, which is symmetrical to the above-mentioned one, is attached to the support shaft 91.
0 is supported, and this pinch roller arm 90 also has a support shaft 92 . A pinch roller 93 is attached.

A tension spring 95 is passed between both pinch roller arms 80 and 90, and the tension spring 95 causes the first
In the initial position shown in the figure, the two pinch roller arms 8
It acts to draw 0.90 into a state where they are almost facing each other.

On the other hand, the magnetic recording/reproducing device i! ! 13, the eject device f! 100 are provided. This ejector f
iloo is a magnetic recording/reproducing device 13 as shown in FIG.
It has a support shaft 101 fixed to a base, and a sliding cassette holder 102 for holding the cassette 10 is rotatably supported on this support shaft.

This cassette holder 102 is given the ability to rotate in the opening direction, that is, in the counterclockwise direction around the support shaft 101, by a tension spring 103, and a lock hole 102a bored at its tip serves as a hook member to be described later. hook 1
10. Further, on the lower surface of the magnetic recording/reproducing device 2!13, as shown in detail in FIG. 6, a crack shaft 104 is supported by means not shown. This crankshaft 104 is provided with a hook 110 that can rotate once. This hook 110 is
It is made by bending a plate material, and an engagement notch 112 as a locking portion that fits and locks into the lock hole 102a of the above-mentioned cassette holder 102 is formed in the vertical two-pronged portion on the negative side. has been done. In addition, a trigger plate 130 as an L-rigger member, which will be described later, is provided at the rising part on the other side.
An engagement piece 111 is formed that can freely move forward and backward with respect to the engagement notch 136. Engagement piece 1 at the base of this hook 110
One end of a hook spring 113 is attached near 11.

Further, one side and the other side of an EJ crank 120 as an eject vibration member made by bending a plate material into a U-shape are rotatably attached to the crankshaft 104. Figure 1, Figure 2
As shown in the figure, an operating section 121 is formed to protrude from the right side of the magnetic recording/reproducing device 13 and is manually operated. The other end of the hook spring 113 described above is attached to the intermediate portion 122 of this EJ crank 120, and the hook 110
and EJ crank 120 are given a rotational habit in a direction that brings them closer to each other. Furthermore, the same EJ crank 120,
A tension spring 123 urges the EJ crank 120 in a clockwise direction about the crankshaft 104.

Further, a support shaft 1 fixed to the main body of the magnetic recording/reproducing device 13 is provided.
35 is provided with a slidable trigger plate 130 via a guide elongated hole 131.

This trigger plate 130 has the above-mentioned shifter cam gear 2.
An operation piece 132 that is pressed and operated by the end face of 0 is formed. Further, an operation piece 133 is also formed, and the operation piece 13
3, the microswitch 134 is pressed.

Further, a trigger crank 140 is rotatably attached to a support shaft 142 fixed to an immovable member.

The tension spring 143 provides a clockwise rotational habit about the support shaft 142.

Therefore, the above-mentioned trigger plate 130 has a habit of moving to the left. A memory L//<-150 based on the inside of an engaging portion 141 formed at the tip of the trigger crank 140 is rotatably supported by a support shaft 154 with respect to a stationary member. This memory lever 150 has a - arm 151 and an other arm 152, and is given a counterclockwise rotational habit by a spring 153. Further, the above-mentioned one arm 151 is adapted to be pressed and operated by the engagement portion 141 of the above-mentioned trigger crank 140, and the other arm 152 is adapted to be operated by the microswitch 1.
55 and locks the EJ crank 120 at the engaging portion under conditions described later.

Reference numeral 96 indicates the end of the shifter cam gear 20.

That is, it is a microswitch that is pressed when the magnetic tape is driven to the magnetic tape withdrawal completion position (preparation position).

Here, the trigger plate 130 and the trigger crank 140 will be referred to as a trigger member, and the position taken when the loading device is in the initial state where no magnetic tape is pulled out and in the unloading completed state is defined as the first position. The position taken when the tape is pulled out will be referred to as the second position.

The ejecting device of the magnetic recording/reproducing apparatus according to this embodiment configured as described above is in the initial position shown in FIG.
The tape shifter 43.63 and the pinch rollers 83, 93 are in a stationary state located within the inner opening 12 of the magnetic tape 11 of the cassette 10. In this state, as shown in FIG. 7(A), since the operating piece 132 of the trigger plate 130 is in the first position suppressed to the right by the end of the shifter cam gear 20, the engagement notch 136 is closed. hook 11
This engaging piece 111 faces the lock hole 1 of the cassette holder 102.
When the engagement notch 112 of the hook 110 is engaged with the hook 110, the engagement notch 112 of the hook 110 is completely retracted from the engagement notch 136. Further, the trigger crank 140 is operated by the operating piece 132 to engage the engaging portion 1 as shown in FIG. 8(A).
41 is depressed and rotated counterclockwise around the support shaft 142, one arm 151 of the memory lever 150 is pressed by the engaging portion 141, and the - arm 151 rotates around the support shaft 154. Rotate clockwise as shown in FIG. 9(A).

Therefore, when the operating part 121 of the EJ crank 120 as an eject operating member is pushed against the tensile force of the tension spring 123 to perform injection, the EJ crank 120 rotates counterclockwise around the crankshaft 104. Rotate to . With this rotation, the hook 110 rotates counterclockwise about the crankshaft 104 via the hook spring 113, as shown by the two-dot chain line in FIG. Then, the lock hole 102a of the cassette holder 102, which was locked by the engagement notch 112, is disengaged, and the cassette holder 102 is released by the biasing force of the tension spring 103, so that the cassette can be taken out.

Further, when the motor 18 is energized in the above-mentioned stationary state (initial state fi), the rotation of the motor 18 forms a driving force transmission system of the bevel gear 19b.

19c and a transmission shaft 19d to the spur gear 19e, and the spur gear 19e causes the shifter cam gear 20 to rotate counterclockwise around the support shaft 21. Along with this, the shifter cam gear 30 also rotates clockwise around the support shaft 31. Then, shifter drive arm 2
The driven pin 44 installed at one end of one shifter holder 40 is suppressed by the tip of the shifter holder 40, and the shaft 42 attached to the other end of the shifter holder 40 is guided to the arc-shaped shifter guide groove 13a. Therefore, it moves outward and downward.

At the same time, one end of the other shifter holder 60 is driven by the shifter driving arm 36, and the other end is guided by the shifter guide groove 13b and moves. For this purpose, the magnetic tape 11 is pulled out by the tape shifter 43.63.

With the start of the loading operation of the loading device, the pressure on the operation piece 132 of the 1-rigger plate 130 by the end of the shifter cam gear 20 is gradually released, so that the trigger plate 13.0 is Due to the clockwise rotation of the trigger crank 140 by the spring 143, the left side is rotated as shown in FIGS. 7(B) and 8(B).
That is, it moves from the first position to the second position.

At this time, the engagement notch 136 of the trigger plate 130 moves to a position away from the area facing the engagement piece 111 of the hook 110. Therefore, as shown in FIG. 9(B), the engaging portion 141 of the trigger crank 140 and the memory lever 15
A gap is created between the arm 151 of 0 and the arm 151 of 0.

As the magnetic tape 11 is drawn out in this manner, the side portion of the pinch roller arm 80 is suppressed by the drive roller 25a against the tensile force of the tension spring 95, and the pinch roller arm 80 is
0 rotates clockwise around the support shaft 81. At the same time, the pinch roller arm 90 is also rotated counterclockwise about the support shaft 91 by the drive roller 35a.

As the shifter cam gear 20 further rotates, the lower end and upper end of the shaft 42 abut against the V-grooves 58 and 59, and accordingly, the micro switch 96 is moved by the end of the shifter cam gear 20. Pressed. At this time, the driven pin 44 is inserted into the guide elongated hole 20a.
There is a slight gap in the longitudinal direction of the shifter cam gear 20, and since it is moved only by the shifter drive arm 26, the shifter cam gear 20 may slightly overrun due to the delay in operation until the micro switch 96 controls the motor 18 to stop. Even if there is a slight dimensional error, it is absorbed by the guide slot 20a and the tape shifter 4
Precise positional control of 3 is provided by V-grooves 58,59. For example, even if there is some play in the shaft 42 of the tape shifter 43, the play is absorbed because the upper and lower ends of the shaft 42 are suppressed by the tensile force of the tension spring 24 in the V-grooves 58 and 59. Similarly to the above, the position of the tape shifter 63 is also regulated by the V grooves 78 and 79.
3 positioning is performed accurately.

In this situation, the pinch roller arm 80.90
Each of the driving rollers 25a is a driving roller 25a.

35a, the pinch rollers 83 and 93 are further rotated from the above-mentioned state, and the pinch rollers 83 and 93 approach the capstans 17 and 16.
It enters the Q-ready state (see Figure 2).

Thereafter, the capstan motor, reel drive motor, etc. are rotationally driven by the tape constant speed drive control means (not shown), and at the same time, the ends of the pinch roller arms 80 and 90 are rotated clockwise and counterclockwise by the solenoid. As a result, the pinch rollers 83 and 93 and the capstan 17°1
The magnetic tape 11 is sandwiched between each of the magnetic heads 15 and 6 under appropriate pressure, and the magnetic tape 11 runs at a constant speed in proper contact with the magnetic heads 15 and 14, thereby enabling desired magnetic recording and reproduction.

Therefore, when the operating section 121 of the EJ crank 120 is pressed in this state, the EJ crank 120 is rotated one degree counterclockwise, and the intermediate portion 122 of the EJ crank 120 is rotated as shown in FIG.
), the memory lever 150 is locked in the biased state by an engaging portion formed on the other arm 152. At this time, the microswitch 155, which has been in a state of being suppressed by the other arm 152 of the memory lever 150, is held in a state where its pressing operation is released. Also, at this time, 1
- The engagement notch 136 of the rigger plate 130 is connected to the hook 110
Since it has moved away from the first position corresponding to the engagement piece 111 and moved to the second position, it is in a state where it is in contact with the flat side edge portion of the trigger plate 130.

Then, based on the contact information of the microswitch 155,
Or when the magnetic tape 11 is running, switch 15
A control circuit (not shown) is activated by the contact information 5 and the operation information of the travel stop push button, and the motor 18 is energized so that the shifter cam gear 20 rotates clockwise (in the opposite direction to that described above). The shifter cam gear 20 rotates clockwise due to the reverse rotation of the motor 18, and when the end of the shifter cam gear 20 is pushed in the area where the unloading of the 6J1 tape is completed, as shown in FIG. ), the engagement piece 111 falls into the engagement notch 136 by the tensile force of the hook spring 113. Then, the locking state between the engagement notch 112 and the lock hole 102a is released, and the cassette holder 102 is rotated counterclockwise around the support shaft 101 by the tensile force of the tension spring 103, and is in the open state, that is, ejected. Then, the cassette can be removed.

At the same time, the trigger crank 140 is rotated as shown in FIG. 8(C).
The state shown in FIG. 8(E) shifts from the state shown in FIG. unlock.

At the same time, the EJ crank 120, which had been held in a biased state until then, is also released from the lock by the memory lever 150, and the crankshaft 104 is moved by the tensile force of the tension spring 123.
Rotate clockwise around , return to the initial state,
Along with this, the engagement notch 112 of the hook 110 also returns to the above-mentioned initial state.

Here, in order to finely adjust the setting angle of each of the tape shifters 43 and 63, taking the tape shifter 43 as an example, the protrusion length of the V groove 59 with respect to the reference V groove 58 can be adjusted by using the fixing screw 55. This can be done by moving the loosening adjustment screw 54 forward or backward.On the other hand, fine adjustment of the torsion angle of the V groove 59 that communicates with the V groove 58 serving as the reference can be done by moving the fixing screw 54 forward or backward.
This can be done by rotating the eccentric screw 56 with the screw 5 loosened.

When the fine adjustment performed in this manner is completed, the fixing screw 55 is tightened and fixed, thereby fixing the position and angle of the V-groove 59 with respect to the V-groove 58 serving as a reference.

This fine-tuning work.

This can be done comprehensively while the magnetic tape 11 is actually running.

Furthermore, fine adjustments to the tape shifter 63 can be made by rotating each of the adjustment screw 74 and the eccentric screw 76 in the same manner as described above.

On the other hand, when drawing the magnetic tape 11 in the normal recording/reproduction state into the cassette 10, the motor 18 is energized with the opposite polarity to that during the loading operation described above, and the shifter cam gears 20 and 30 are accordingly turned on. Rotate it in the opposite direction as before. When the shifter cam gear 20 rotates clockwise around the support shaft 21, the other shifter cam gear 30 meshing therewith also rotates counterclockwise around the support shaft 31. Then, the pinch roller arms 80 and 90 are gradually released from the suppressing action by the drive rollers 25a and 35a, and are rotated clockwise and counterclockwise by the restoring force of the tension spring 95, respectively, and the pinch roller 83 , 93 to the opening 12 side.

In parallel with such an operation, the shifter holders 40 and 60 move the shifter cam gears 20 and 30 with the driven pins 44 and 64 implanted at one end pressed toward one side of the guide elongated holes 20a and 30a. The tape shifters 43 and 63 attached to the other end are pulled upward in FIG.
8. Retract from 79 and shifter guide grooves 13a and 13
b, into the opening 12 of the cassette 10, and returns to the initial state as shown in FIG. While this operation is in progress, the magnetic tape 11 that has been pulled out of the opening 12 of the cassette 10 is wound into the cassette 10 by controlling the reel drive motor by a slack tape winding control means (not shown). It will be done. Then, when the micro switch 134 is pressed by the end of the shifter cam gear 20 via the trigger plate 130,
A control means (not shown) operates to stop the motor 18, and the series of operations ends.

According to this embodiment configured and operated in this way,
To remove a cassette, for example, by pressing the EJ crank 120 as an eject operation member once, the cassette can be ejected at any timing, not only when the loading is completed and stopped, but also during the loading operation and the unloading operation. After accepting the operation and waiting for the unloading of the magnetic tape to finish, the cassette holder can be opened automatically.Also, even if you press the eject button while the magnetic tape is running, the stop button for stopping the magnetic tape running can be pressed. Since you only need to operate the , operability can be dramatically improved. In other words, there is no need to perform troublesome operations such as pressing the eject operating member many times or waiting for the eject operating member to return to the initial state.

In addition, in this embodiment, the magnetic tape 11 is in an initial state where it is pulled in (including a state where unloading is completed).
The cassette holder 102 can be unlocked by the hook 110 and the cassette 10 can be taken out only when the cassette holder 102 is in the Accidents that could damage the tape 11 can be completely avoided.

Furthermore, since the cassette holder 102 is opened by mechanically releasing the hook 110 that locks the cassette 1-holder 102 using an EJ crank 121, magnetic recording and playback can be performed even when there is no power source (or at a location). If the device is in its initial state, it is convenient to be able to freely attach and detach cassettes.

In addition, accidents that occur when the eject operation button is pressed immediately or almost simultaneously after stopping the magnetic tape with the stop button found in conventional eject devices, such as poor memory of the eject press operation and floating of the cassette holder, can occur. Such accidents cannot occur at all in this embodiment, and therefore, the running height position of the magnetic tape is always stabilized at a predetermined position, and proper recording and reproduction can be performed.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.

For example, in the above embodiment, the EJ crank 120 as the eject operation member is configured to be directly operated, but an eject button that can be operated externally is provided separately, and the EJ crank 120 is driven via this eject button. You can do it like this.

(a) Effect As described above, according to the present invention, the push operation of the eject operation member is accepted at any time, the push operation is memorized, and the cassette holder is automatically opened when unloading is completed. At the same time, since the above-mentioned memory is cleared, the cassette eject operation can be performed extremely easily, and in the initial state, it is possible to attach and detach the force cell 1- at any time even in a place where there is no power supply. Therefore, it is possible to provide an extremely practical ejecting device for a magnetic recording/reproducing device.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the overall configuration of a magnetic recording/reproducing apparatus according to the present invention, FIG. 2 is a plan view for explaining the operation of the same embodiment, and FIG. 3 is a part of FIG. 1. FIG. 4 is an enlarged side view, FIG. 4 is a partially enlarged plan view, FIG. 5 is a side view showing the structure of the main part of the present invention, and FIG. 6 is an enlarged view of the structure of the main part of the invention. Exploded perspective views shown in FIGS. 7(A) to (D),
Figures 8 (A) to (E) and Figures 9 (A) to (D) are
FIG. 3 is a schematic enlarged plan view for explaining the operation. 10...Cassette, 11...Magnetic tape, 13...Magnetic recording/reproducing device, 14.15...Magnetic head, 16.17... ...capstan. 18...Motor. 20.30...Shifter cam gear, 26.36
・・・・・・Shifter drive arm, 40.60・・・・・・
shifter holder. 43.63... Tape shifter, 50.70.
...Shifter stopper. 80.90...Pinch roller arm. 83.93...Pinch roller. 100...Eject device. 102...Cassette holder, 103...
...Tension spring, 110...Hook, 113.123,143,153...Spring. 120...EJ crank, 123...Tension spring, 130...Trigger plate, 134.155...Micro switch, 136
...Engagement notch, 140...Trigger crank, 150...
...Memory lever. Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] (1) In an ejection device of a magnetic recording/reproducing device that has a loading device that pulls out a magnetic tape stored in a wound state in a cassette to a position near a capstan located outside the cassette, the loading device pulls out the magnetic tape. a trigger member that takes a first position when the magnetic tape is in an initial state and an unloading completed state, and takes a second position when the magnetic tape is pulled out;
a hook member having a locking portion for locking a cassette holder holding a cassette in a closed position, the locking being able to be released only when the trigger member is in a first position; an eject operating member that is biased by a predetermined amount and applies a biasing force to the hook member in a direction to release the lock; and an eject operating member that maintains the biased state of the eject operating member when the trigger member is in a second position. An ejecting device for a magnetic recording/reproducing device, comprising: a memory member that releases the holding when the trigger member assumes a first position.