JPH0944949A - Cassette loading device of tape recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a tape cassette from jumping out at the time of ejection with a simple constitution in a tape recorder loading/ejecting the tape cassette to a cassette holder by using a reversing spring. SOLUTION: On a turning lever 5 turning in respect to the loading/ejecting operation of the tape cassette T and reversing the reversing spring 8 by being turned with the thrusting operation of the eject lever 6, an engaging part 5c is provided, which is engaged with the thrust-operated eject lever 6 to interrupt the turn on the way and disengaged by the recovering movement of the eject lever 6 according to the release of thrusting operation. The movement of a slider 4 holding the engagement of the tape cassette while being connected to the turning lever 5 is interrupted, then the tape cassette is prevented from being deviated from the slider by suppressing the mobile inertial force of tape cassette at the time of ejection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape recorder which uses a reversing spring to insert and remove a tape cassette into and from a cassette holder, and more particularly to a cassette loading device which prevents the cassette from unintentionally ejecting at the time of ejection. Regarding the device.

[0002]

2. Description of the Related Art Cassette type tape recorders for vehicles are
Generally, it has a cassette holder that is vertically movable. Then, when the cassette holder is in the raised position, the tape cassette inserted from the front opening is pulled into the inside, and then the cassette holder is lowered, and the tape cassette housed inside is mounted on the reel shaft. . The tape cassette is taken out by raising the cassette holder to separate the tape cassette from the reel shaft, and then extruding the tape cassette from the cassette holder so that a part of the tape cassette projects from the front opening.

By the way, the insertion / removal (loading / ejection) of the tape cassette with respect to the cassette holder is performed by utilizing the force of a reversing spring, for example. Specifically, the tape cassette is engaged with a slider provided so as to be movable in the insertion / removal direction of the cassette, and the reversing spring attached to the slider is reversed. Then, by utilizing the force of the reversing spring, the slider is moved from the eject position on the front opening side of the cassette holder to the loading position in the inner part of the cassette holder, or conversely from the loading position to the eject position, whereby the tape is moved. It is designed to load and eject cassettes. The reversal of the reversing spring is controlled by the forced movement of the slider accompanying the insertion of the tape cassette into the cassette holder or the operation of the eject lever. The vertical movement of the cassette holder described above is closely related to the loading and ejecting operation of the tape cassette with respect to the cassette holder.

[0004]

When the eject lever is operated to eject the tape cassette to invert the reverse spring, the slider moves from the loading position to the eject position under the force of the reverse spring. When it reaches the eject position, its movement is suddenly stopped. Then, there is a possibility that the tape cassette, which is engaged with the slider and moved to the eject position together with the slider all at once, is detached from the slider due to the moving inertial force and is ejected from the cassette holder.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a cassette loading device for a tape recorder which can effectively prevent unintended ejection of the cassette at the time of ejecting. It is in.

[0006]

A cassette loading device for a tape recorder according to the present invention is provided so as to be movable back and forth in the insertion / removal direction of a tape cassette with respect to a cassette holder, and engages with the tape cassette to internally mount the tape cassette. A slider that moves between a loading position that is pulled in and an eject position that causes the tape cassette to project to the outside, and a rotating lever that engages one end of the slider and that rotates in conjunction with the movement of the slider. The eject lever urged in the eject direction of the tape cassette and the eject lever and the rotating lever are bridged and the rotating lever is loaded in accordance with the relative positional relationship between these levers. A reversing spring for selectively urging one of the eject position and the eject position. And a pressing portion for pressing the rotating lever to rotate the rotating lever to a position for reversing the reversing spring when the eject lever is pushed in the loading direction against the spring, The rotation lever is engaged with the eject lever in the pushing operation position to prevent its rotation in the middle, and the engagement with the eject lever is released by the return movement associated with the release of the pushing operation of the eject lever. It is characterized in that an engaging portion is provided.

Further, the turning lever receives the reversing force of the reversing spring, engages with the eject lever until the slider reaches the loading position, and moves the eject lever in the eject direction by the force of the spring. It is characterized in that a locking portion for preventing the above is provided.

[0008]

According to the present invention, when the eject lever is pushed in and the rotating lever is rotated by the pressing portion to rotate the rotating lever, the relative movement of the eject lever and the rotating lever is thereby caused. The positional relationship changes and the reversing spring reverses. Then, the slider starts to move from the loading position to the eject position by receiving the force of the reversing spring, so that the rotating lever tries to rotate further. However, since the engaging portion of the rotating lever engages with the eject lever at the pushing position and its rotation is blocked midway, the movement of the slider toward the eject position is temporarily stopped at the midway position.

After that, when the pushing operation of the eject lever is released, the return movement of the eject lever by the spring releases the engagement between the eject lever and the rotating lever. As a result, with the rotation of the rotation lever, the slider again starts moving toward the eject position.

Therefore, the slider does not move from the loading position to the eject position all at once due to the reversal of the reversing spring, but is temporarily stopped at the middle position of rotation of the rotating lever,
Since the eject lever is moved to the final eject position when the pushing operation is released, the moving inertial force applied to the tape cassette is significantly reduced even if the force of the reversing spring is strong. As a result, an unintentional force for releasing the engagement is not applied to the engaging portion between the slider and the tape cassette.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cassette loading device for a tape recorder according to the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a schematic structure of a main part of an apparatus according to the present invention. Reference numeral 1 is a chassis forming a main body of the apparatus. The cassette holder 2 for accommodating and holding the tape cassette T has a box frame shape in which the tape cassette T is inserted / removed along the longitudinal direction from the front opening portion, and the lower surface thereof is largely opened.
The cassette holder 2 is suspended from the front edge of a lifter 3 which is attached to the chassis 1 so as to be rotatable in the vertical direction in the inner part of the chassis 1, and is vertically movable with respect to the chassis 1. A guide groove 3a is provided at the center of the lifter 3 along the longitudinal direction of the cassette holder 2.
A slider 4 is movably provided on the. The front end portion of the slider 4 is extended continuously into the guide groove 3a so as to be able to enter the clearance groove 2a provided in the cassette holder 2, and can be elastically deformed upward in the clearance groove 2a. ing. The tape cassette T is inserted into the cassette holder 2 while elastically deforming the front edge of the slider 4, and the front edge rides over the upper surface of the tape cassette T and elastically returns to engage with the hub hole of the tape cassette T. . The slider 4 holds the tape cassette T between the front edge portion that engages with the hub hole and the rear end portion that abuts against the longitudinal end portion of the tape cassette T, and the front opening portion side of the cassette holder 2 Between the eject position and the loading position at the back.

The eject position is a position in which the tape cassette T is projected from the front opening of the cassette holder 2 by about half as shown in the plan view of FIG. 2, and the loading position is shown in the plan view of FIG. This is the position where the tape cassette T is completely retracted to the inside of the cassette holder 2 and stored.

On the upper surface of the lifter 3, there is provided a rotating lever 5 in which a pin 4a protruding above the slider 4 is engaged with a forked arm. This turning lever 5
Rotates in conjunction with the slider 4 moving in the guide groove 3a. Further, the base portion of the rotating lever 5 is provided with first and second control arm portions 5a and 5b extending toward the side opposite to the tip bifurcated arm portion. Control arm 5a
An engaging portion 5c is provided at the end of the. The engagement portion 5c is formed by bending the end portion of the first control arm portion 5a upward.

On the other hand, an eject lever 6 is provided on the side wall surface of the chassis 1 so as to be movable in the inserting / removing direction of the tape cassette T with respect to the cassette holder 2. This eject lever 6 is formed by bending a vertical portion extending in the longitudinal direction along the side wall surface of the chassis 1 and an upper end thereof bent inward, and the main body portion is located on the upper surface side of the cassette holder 2 and the lifter 3. It consists of a horizontal part. A part of the horizontal portion is formed so as to project outward on the side opposite to the cassette holder 2. Then, the eject lever 6 is attached to the cassette holder 2 by the tension spring 7 that is hung between the eject lever 6 and the chassis 1.
Of the tape cassette T, that is, in the eject direction of the tape cassette T. By pushing the eject lever 6 against the tension spring 7, the tape cassette T is ejected as described later.

The vertical portion of the eject lever 6 controls the vertical movement of the cassette holder 2 with respect to the chassis 1.
Two lift grooves 6a, 6b and a holding groove 6c for stably holding the lowered cassette holder 2 in the lowered position are provided. The lift grooves 6a, 6b and the holding groove 6c have tongue pieces 2b, 2c projectingly formed on the side plate of the cassette holder 2.
Further, the tongue pieces 3b projectingly formed on the front edge side of the lifter 3 are respectively inserted. The cassette holder 2 is moved up and down by guiding the tongues 2b and 2c through the lift grooves 6a and 6b as the eject lever 6 moves. Further, by pressing the tongue piece 3b of the lifter 3 which has lowered the cassette holder 2 downward by the pressing groove 6c, the cassette holder 2 is stably held at the lowered position via the lifter 3.

Further, a reversing spring 8 made of a torsion coil spring is stretched between a portion of the horizontal portion of the eject lever 6 which extends to a position above the cassette holder 2 and a substantially middle portion of the rotating lever 5. There is. The reversing spring 8 reverses in accordance with the relative positional relationship between the eject lever 6 and the rotating lever 5 to direct the tip bifurcated arm of the rotating lever 5 toward the rear side or the front side of the cassette holder 2. The slider 4 is selectively urged to rotate, whereby the slider 4 is moved to and positioned at the loading position or the eject position.

Further, a pressing pin (pressing portion) 6d is attached downward to a portion of the horizontal portion of the eject lever 6 which is projected to the side opposite to the cassette holder 2. The pressing pin 6d presses the first control portion 5a of the rotating lever 5 to rotate the rotating lever 5 when the eject lever 6 is pressed against the tension spring 7.

The rear side step of the overhanging portion of the horizontal portion of the eject lever 6 where the pressing pin 6d is provided serves as an abutting portion 6e engageable with the engaging portion 5c of the rotating lever 5. There is. The abutting portion 6e engages with the engaging portion 5c of the rotating lever 5 when the eject lever 6 is in the pushing operation position,
It plays the role of blocking the rotation of the rotation lever 5 which is about to rotate toward the front side of the cassette holder 2 under the force of the reversing spring 8 during the rotation.

The second control arm portion 5b of the rotating lever 5 is provided at the connecting portion between the vertical portion and the horizontal portion of the eject lever 6.
Is provided with a hole 6f into which the entry can be made. Then, when the second control arm portion 5b is entering the hole portion 6f with the rotation of the turning lever 5, the contact between the edge portion of the hole portion 6f and the second control arm portion 5b causes Further movement of the eject lever 6 biased by the tension spring 7 is prevented.

Reference numeral 9 in FIG. 1 denotes a reel shaft provided below the cassette holder 2 and provided on the chassis 1. By lowering the cassette holder 2, the cassette holder 2
By mounting the hub hole of the tape cassette T loaded into the reel shaft 9 on the reel shaft 9, the tape cassette T is mounted. Since the reel shaft 9 and its drive system are not directly related to the gist of the present invention, description thereof will be omitted.

Next, the loading / ejecting operation of the tape cassette T in the cassette loading apparatus configured as described above will be described with reference to FIGS. 2 to 8.

2 to 7 are exploded views showing the operating state of the apparatus of the embodiment. FIG. 2 shows the eject state.
FIG. 3 shows a state when the tape cassette T is pushed in against the reversing spring 8, and FIG. 4 shows a loading completed state. Further, FIG. 5 shows the cassette holder 2 when the loading of the tape cassette T into the cassette holder 2 is completed.
6 is a view for explaining the descending operation of the eject lever 6, FIG. 6 shows a state when the eject lever 6 is pushed, and FIGS. 7 and 8 show a state in which the eject lever 6 prevents the pivot lever 5 from pivoting.

In the ejecting state shown in FIG. 2, the cassette holder 2 is positioned at the raised position, and the tape cassette T can be inserted and removed through the front opening. At this time, the eject lever 6 is engaged with the second control arm portion 5b of the rotary lever 5 that has entered the hole 6f, and is retained at a predetermined pushing position against the tension spring 7.

In this ejected state, the tape cassette T is inserted from the front opening, the tape cassette T is engaged with the slider 4, and the tape cassette T is further pushed. Against it, it moves toward the inner part (loading position), and the rotation lever 5 rotates accordingly. When the tape cassette T is continuously pushed in, the slider 4 eventually reaches the middle portion of the guide groove 3a as shown in FIG.
The distance between both ends of the reversing spring 8 spanned between the eject lever 6 and the rotating lever 5 is set to the minimum (the reversing spring 8 is compressed). When the tape cassette T is pushed in slightly beyond this position, the force of the reversing spring 8 which has been acting toward the eject position side until now is reversed and acts toward the loading position side. Then, the slider 4 is moved to the loading position shown in FIG. 4 by the force of the reversing spring 8 and the tape cassette T is completely pulled into the cassette holder 2.

When the loading of the tape cassette T into the cassette holder 2 is completed, the second control arm portion 5b of the rotating lever 5 which is rotated by the movement of the slider 4 comes out from the hole 6f of the eject lever 6. , The engagement with the eject lever 6 is released. Then, as shown in FIG. 5A, the eject lever 6 which has been held at the predetermined pushing position moves to the eject direction of the tape cassette T (right side in FIG. 5) by the force of the tension spring 7. Then, the eject lever 6 moves along with the movement of the lift groove 6a,
Guide the tongue pieces 2b, 2c of the cassette holder 2 downward with 6b,
As shown in FIG. 5B, the cassette holder 2 is moved to the lowered position. After that, as the eject lever 6 completes the lowering of the cassette holder 2, the tongue piece 3b of the lifter 3 is pushed in the holding groove 6c.
Is pressed downward to stably hold the cassette holder 2 in the lowered position.

As described above, the loading of the tape cassette T into the cassette holder 2 and the tape cassette T
The cassette holder 2 which has completed the loading of the tape is lowered in association with each other, and the mounting of the tape cassette on the reel shaft 9 is completed. Then, in this state, the tape cassette T is reproduced.

On the other hand, the tape cassette T mounted on the reel shaft 9 and in the reproducing position is ejected (taken out) by pushing the eject lever 6 against the tension spring 7 toward the inner side.

When the eject lever 6 is pushed inward, the holding groove 6c is first disengaged from the tongue piece 3b of the lifter 3 in the initial stage of its movement to release the holding of the lifter 3 and the cassette holder 2. After that, the lift grooves 6a, 6b guide the tongues 2b, 2c of the cassette holder 2 upward with the movement of the eject lever 6 to the inner side, and the cassette holder 2 is raised. The raising of the cassette holder 2 is performed by the initial movement of about 1/3 of the total pushing movement amount of the eject lever 6.

After the cassette holder 2 is lifted to a predetermined raised position, when the eject lever 6 is further pushed inward, the pressing pin 6d provided on the horizontal portion of the eject lever 6 causes the rotation lever to rotate. The first control arm 5a of 5 is brought into contact with the first control arm 5a and is pressed to rotate the rotation lever 5. Then, the turning lever 5 is turned while the second control arm portion 5b is inserted into the hole portion 6f of the eject lever 6. With the rotation of the rotation lever 5, the slider 4 moves with the tape cassette T toward the eject position. At the same time, the relative positional relationship between the rotating lever 5 and the eject lever 6 changes, and the reversing spring 8 stretched between them is gradually compressed.

In this way, when the rotation lever 5 is rotated by the movement of the eject lever 6 to move the reversing spring 8 beyond the position where it is in the maximum compression state as shown in FIG. Inversion spring acting toward
The force of 8 is reversed and acts toward the eject position.
That is, when the eject lever 6 is pushed to rotate the revolving lever 5 to a position where the reversing spring 8 is reversed, the revolving lever 5 starts to rotate under the force of the reversing spring 8, and the tape cassette T The slider (4) engaged and held by is further moved toward the eject position.

However, when the rotating lever 5 is rotated to a predetermined position as shown in FIG. 7, the engaging portion 5c of the rotating lever 5 comes into contact with the eject lever 6 in the pushing operation position as shown in detail in FIG. It abuts the contact portion 6e, and further rotation of the rotation lever 5 is prevented. That is, the rotation lever 5 is prevented from rotating by the eject lever 6 during the rotation. As a result, the slider 4, which has been moved toward the eject position side by the turning lever 5, is stopped at the midway position before reaching the eject position. In this way, a stopper 2d is provided above the front edge of the slider 4 which is stopped midway, just so as to straddle the escape groove 2a. Upward elastic deformation is prevented.

After that, when the pushing operation of the eject lever 6 is released, the eject lever 6 receives the force of the tension spring 7 and is regulated by the contact of the rotary lever 5 with the second control arm portion 5b. Go back up. By this return movement of the eject lever 6, the engagement between the engaging portion 5c of the rotating lever 5 and the contact portion 6e of the eject lever 6 is released, so that the rotating lever 5 receives the force of the reversing spring 8. Rotate the slider 4 until it is positioned at the eject position. As a result, the tape cassette T engaged and held by the slider 4 is shown in FIG.
2 is moved from the mid-ejection position shown in FIG. 2 to the eject position shown in FIG. 2, and substantially half of the position is projected outward from the cassette holder 2 to complete the ejection.

As described above, in this apparatus, when the eject lever 6 is pushed to eject the tape cassette T from the cassette holder 2, the rotating lever 5 is pushed by the eject lever 6 and the reversing spring 8 is pushed. Is rotated to a position where it is reversed, and thereafter, the rotating lever 5 is rotated by the force of the reversing spring 8. However, since the rotary lever 5 is provided with the engaging portion 5c that engages with the eject lever 6 that is being pushed in and prevents its rotation,
The rotation lever 5 is ejected during the rotation.
The rotation is blocked by. Then, when the eject lever 6 is returned along with the release of the pushing operation of the eject lever 6, the rotation blocking of the rotation lever 5 is released by this, and the rotation lever 5 is rotated again.

As a result, the movement of the slider 4 which moves from the loading position to the eject position in accordance with the rotation of the rotation lever 5 is temporarily stopped at the middle position of the movement. Then, after that, by releasing the pushing operation of the eject lever 6, the slider 4 moves from its midway position to the eject position.

Therefore, since the moving inertial force applied to the tape cassette T along with the movement of the slider 4 is temporarily suppressed at the stop position on the way, the slider 4 is moved to the eject position from the above stop position. The moving inertial force does not become excessively large. Moreover, at the position where the slider 4 is stopped, the stopper 2d prevents the upward deformation of the front edge of the slider 4, so that the tape cassette T is temporarily stopped when the slider 4 is stopped during the movement. Even if the moving inertial force applied is large,
The tape cassette T will not come off from the slider 4.

Therefore, the moving inertial force applied to the tape cassette T is applied to the tape cassette T and the slider as in the conventional device in which the slider 4 is moved from the loading position to the eject position at once by the force of the reversing spring 8. There is no such a problem that the tape cassette T is disengaged from the slider 4 and jumps out of the cassette holder 2 when the slider 4 reaches the eject position and exceeds the engaging force with the tape holder 4.

Further, the rotary lever 5 is provided with an engaging portion 5c for engaging with the eject lever 6 in the pushing operation position, and in particular, the end portion of the first control arm portion 5a is bent upward, The rotation of the rotation lever 5 can be controlled by a simple structure called "engagement portion 5c", and the movement of the slider 4 at the time of ejection can be restricted to effectively prevent the tape cassette T from jumping out.

Further, in this apparatus, the tape cassette T
The second control arm portion 5b of the rotary lever 5 interlocked with the movement of the slider 4 prevents the eject lever 6 from returning from the predetermined position until the slider 4 reaches the loading position during loading. . Therefore cassette holder 2
Before the completion of loading the tape cassette T with respect to the tape cassette T, the cassette holder 2 is not moved downward by the vertical movement mechanism (lift grooves 6a, 6b) of the cassette holder 2 provided on the slide lever 6, and the tape cassette for the reel shaft 9 is not moved. The T can be securely attached.

The present invention is not limited to the above embodiment. For example, the position where the rotation of the rotating lever 5 is blocked midway and the movement of the slider 4 is restricted may be immediately after the reversing spring 8 is reversed by the rotating lever 5.
Further, instead of the stopper 2d provided on the cassette holder 2, it is useful to provide a stopper having a similar function on the front edge portion of the lifter 3. Also, on the side of the front edge of the slider 4,
When located in the escape groove 2a of the cassette holder 2, the guide moves away from the edge of the escape groove 2a, and when positioned in the guide groove 3a of the lifter 3, the guide goes under the edge of the guide groove 3a to prevent its elastic deformation. It is also useful to provide a piece.

Further, in the embodiment, the vertical movement of the cassette holder 2 is controlled by the lift grooves 6a and 6b provided in the eject lever 6, but another member interlocked with the movement of the rotary lever 5 and the eject lever 6 is used. The vertical movement of the cassette holder 2 may be controlled. Further, the reversing spring 8 can be directly stretched between the eject lever 6 and the slider 4 and deformed so as to control the movement of the slider 4. Other,
Various modifications can be implemented without departing from the scope of the present invention.

[0042]

As described above, according to the present invention, in the cassette loading device of the tape recorder in which the reversing spring is used to insert and remove the tape cassette into and from the cassette holder, it is possible to control the ejection of the tape cassette. Since the rotation of the moving lever is engaged with the eject lever which is pushed to rotate the rotating lever and is blocked during the rotation, the movement of the slider that holds the tape cassette is temporarily stopped. By suppressing the moving inertial force applied to the tape cassette, it is possible to effectively prevent the tape cassette from protruding from the cassette holder. Moreover, the tape cassette can be prevented from popping out with a simple structure in which an engaging portion that can be engaged with the eject lever that is being pushed into the rotating lever is provided, so that the practical advantage thereof is great.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a cassette loading device of a tape recorder according to an embodiment of the present invention.

FIG. 2 is a plan view showing an ejected state of the embodiment apparatus.

FIG. 3 is a plan view showing a tape cassette insertion state in the apparatus of the embodiment.

FIG. 4 is a plan view showing a completed loading state of the tape cassette in the apparatus of the embodiment.

FIG. 5 is a side view of an essential part for explaining the vertical movement of the cassette holder in the apparatus according to the embodiment.

FIG. 6 is a plan view showing a pushing operation state of the eject lever in the embodiment apparatus.

FIG. 7 is a plan view showing a rotation restriction state of a rotation lever by an eject lever in the embodiment apparatus.

FIG. 8 is a perspective view of essential parts showing in detail a rotation restriction state by engagement of an eject lever and a rotation lever in the embodiment apparatus.

[Explanation of symbols]

1 ... Chassis, 2 ... Cassette holder, 2a ... Escape groove, 2b, 2c
... tongue piece, 3 ... lifter, 3a ... guide groove, 3b ... tongue piece, 4 ... slider, 5 ... turning lever, 5a ... first control arm portion, 5b ... second control arm portion (locking portion) , 5c ... Engaging portion, 6 ... Eject lever, 6a, 6b ... Lift groove, 6c ... Holding groove, 6d ... Push pin, 6e
… Abutment part, 6f… Hole part, 7… Tension spring, 8… Inversion spring, 9
… Reel shaft, T… Tape cassette.

Claims (2)

[Claims] 1. An eject lever (6) movably provided in a tape cassette (T) with respect to a cassette holder (2) and biased in an eject direction of the tape cassette; and an eject lever (6) for the cassette holder. The tape cassette is movable in the insertion / removal direction, and moves between a loading position where the tape cassette is engaged with the tape cassette and is pulled inside the cassette holder, and an eject position where the tape cassette is projected to the outside. A slider (4), a rotary lever (5) that engages with the slider at one end and rotates in conjunction with the movement of the slider, and is suspended between the rotary lever and the eject lever. And a reversing spring (8) for selectively urging the rotating lever to one of the loading position and the ejecting position. Pressing portion for rotating to a position for reversing the reversing spring presses the rotating lever when pushed in the loading direction against the (6
d), the rotation lever engages with the eject lever that has been pushed, and its rotation is blocked midway, and the return lever is engaged with the ejection lever when the pushing operation is released. An apparatus for loading a cassette of a tape recorder, comprising: an engaging portion (5c) for releasing. 2. The cassette loading device for the tape recorder according to claim 1, wherein the rotating lever receives the reversing force of the reversing spring accompanying the movement of the slider from the eject position to the loading position, and the slider is moved. A cassette loading device for a tape recorder, comprising: a locking portion (5b) that engages with the eject lever until it reaches a loading position and prevents the eject lever from moving in the eject direction.