JPH0753161Y2 - Pack insertion mechanism for tape player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] In the present invention, an electric motor includes a pack engaging member for inserting a cassette pack, an elevator holder for lowering the cassette pack to the level of a reproducing head, and a head base supporting the reproducing head. It was designed to be operated by a common slide lever driven by.

[Industrial application field]

 The present invention relates to a pack insertion mechanism of a tape reproducing device.

[Conventional technology]

In the tape reproducing apparatus, the cassette pack is inserted into the elevator holder to a predetermined position, and then the elevator holder is lowered to lower the cassette pack to the level of the reproducing head. Then, the head base supporting the reproducing head moves forward to come into contact with the tape. In the pack insertion mechanism of the conventional tape reproducing device, the slide lever is driven by the electric motor,
The slide lever operates the pack engaging member and the elevator holder. Further, the head base supporting the reproducing head is operated by an electric motor different from the electric motor of the pack insertion mechanism, a solenoid type plunger, or the like.

[Problems to be solved by the device]

In the tape reproducing apparatus as described above, since an actuator such as an electric motor is separately used for inserting the cassette pack and for bringing the head stand to the reproducing position, not only is the number of actuators increased. , It was necessary to synchronize the operation between the actuators, which made control complicated. Further, even when the operations of the actuators are synchronized with each other, a small timing shift or a loss of waiting time may occur.

The present invention was made to solve the above problems,
It is an object of the present invention to provide a pack inserting mechanism of a tape reproducing device in which a pack engaging member, an elevator holder, and a head stand are operated by one driving means and one slide lever.

[Means for Solving the Problems]

A pack inserting mechanism of a tape reproducing apparatus according to the present invention comprises a head base for supporting a reproducing head, a pack engaging member engageable with the cassette pack for inserting the cassette pack into a predetermined position above the head base, An elevator holder that lowers the cassette pack to the level of the reproducing head at the predetermined position, a rack that is movably provided along a vertical side wall of the chassis, and that engages with a drive pinion, and an elevator holder for moving up and down. A main slide lever having an elongated hole including an oblique portion and a protrusion for driving a head base, and coupled with the main slide lever so as to move substantially integrally with the main slide lever,
A vertical wall portion that overlaps the main slide lever, and a horizontal upper wall portion that is formed by bending the vertical wall portion at a substantially right angle, and the horizontal upper wall portion has a long hole and a continuous long hole. An auxiliary slide lever having a locking recess is formed, and one end of the auxiliary slide lever is connected to the pack engaging member and the other end of the auxiliary slide lever is provided with a pin inserted into the elongated hole of the auxiliary slide lever and the locking recess. The pin engages with the locking recess of the auxiliary slide lever in the initial stage of the movement of the main slide lever and thereafter engages with the elongated hole of the auxiliary slide lever, A first swiveling lever for moving the pack engaging member in the cassette pack insertion direction at an initial stage of movement, and an engagement for connecting to the elevator holder and engaging with a long hole of the main slide lever. And a second swiveling lever that lowers the elevator holder in the middle stage of movement of the main slide lever, and is movable integrally with the main slide lever by engaging with a protrusion of the slide lever. At the same time, the projection engagement lever has an elongated hole including an oblique portion, an engagement portion connected to the head base, and an engagement pin that engages the elongated hole of the projection engagement lever. In the latter stage of the movement of the slide lever, a head base driving swivel lever for moving the head base in the direction toward the reproducing position is provided.

[Action]

In the above structure, the pack engaging member, the elevator holder, and the head stand are respectively connected to the first turning lever, the second turning lever, the protrusion engaging lever, and the head stand driving turning lever, and the main slide lever and The auxiliary slide lever can be moved by a relatively long stroke by the rack, and each of the above members is unique in that it is actuated by the main slide lever and the auxiliary slide lever in the early stage, the middle stage and the latter stage of this long stroke, respectively. With the structure, the pack engaging member, the elevator holder, and the head base can be sequentially operated in timing during the slide stroke of the common main slide lever and the auxiliary slide lever.

〔Example〕

Referring to FIGS. 1 and 2, the chassis of the tape reproducing apparatus includes a lower horizontal wall portion 10 (FIG. 2) and a vertical side wall portion 12.
(Fig. 1) is included. A substantially rectangular head base 16 supporting the magnetic head 14 is arranged along the lower horizontal wall portion 10.
On the lower horizontal wall portion 10, the take-up reels 18,20 for receiving the tape spool of the cassette pack C, the capstans 22,24 and the pinch rollers 26,28 are attached to the lower horizontal wall portion 10. The head base 16 and the bottom portion 10 of the lower horizontal wall are provided with holes for passing the take-up reels 18, 20.

Referring to FIG. 4, the elevator holder 30 has a head base 16
Is provided so as to be located on a plane above. The elevator holder 30 comprises a first part 30a which rises and falls substantially parallel to the lower horizontal wall part 10 of the chassis and a second part 30b which is pivotable about a horizontal pivot pin 31 (Fig. 1). 1
And the second portions 30a, 30b are pivotally attached to each other in an upper position for receiving the inserted cassette pack C, the cassette pack C engaging the take-up reels 18, 20 and the tape at the same level as the magnetic head 14. It can be moved up and down between the lower position and the lower position. A front cover P, which is a part of the outer case of the tape reproducing apparatus, is provided with a door leaf D so that the cassette pack C can be inserted from the door leaf D in the direction of an arrow IN parallel to the vertical side wall portion 12. There is. Tobira D
Is supported at its upper end by a pivot pin, usually the first
As shown by the solid line in the figure, it hangs down from the top to close, but when opened, it can turn inside the tape reproducing device as shown by the chain double-dashed line.

As shown in FIG. 4, a guide groove is provided in the center of the elevator holder 30 in parallel with the insertion direction IN of the cassette pack C.
32 are provided. A pack engagement lever 34 is arranged on the lower surface side of the elevator holder 30 and is guided along the guide groove 32. One end of the pack engaging lever 34 is a pack engaging portion 34a protruding downward, which elastically engages with the upper surface of the tape spool of the cassette pack C or the like to move the cassette pack. Pack engagement lever 34
A pin 34b protruding upward is provided at the other end of the.

A first swivel lever 36 is arranged horizontally above the elevator holder 30. The first pivot lever 36 is rotatably supported on a vertical pivot pin 38 mounted on a horizontal wall 12a extending from the upper end of the vertical side wall portion 12 of the chassis. The first turning lever 36 is provided with a long hole 36a at one end and an upward pin 36b at the other end. The pin 34b of the pack engaging lever 34 is inserted into the elongated hole 36a at one end of the first turning lever 36.

As shown in FIGS. 1 and 4, an auxiliary slide lever 40 is provided along the vertical side wall portion 12 of the chassis.
The auxiliary slide lever 40 includes a horizontal upper wall portion 40a and a vertical wall portion 40b which are formed by bending at an angle at a right angle. The horizontal upper wall portion 40a is provided with an elongated hole 42 and a locking recess 44 continuous with the elongated hole 42, and an upward pin 36 of the first turning lever 36.
b is inserted into the elongated hole 42 and the locking recess 44. The upward pin 36b of the first swivel lever 36 mainly engages with the locking recess 44 during operation, and the auxiliary slide lever 40 is slid in parallel to the insertion direction IN of the cassette pack C, thereby making the first swivel motion. The lever 36 can be swung, so that the pack engaging lever 34 and the cassette pack C engaged with the pack engaging lever 34 can be moved back and forth. Further, when the cassette pack C is inserted, the cassette pack C causes the pack engaging lever 34 to move.
When is pressed, the first pivot lever 36 pivots, which causes the auxiliary slide lever 40 to slide. The vertical wall portion 40b of the auxiliary slide lever 40 extends further toward the front plate P side than the horizontal upper wall portion 40a, and has a horizontal elongated hole 46.

The main slide lever 48 is provided on the layer between the vertical side wall portion 12 of the chassis and the auxiliary slide lever 40.
It will be placed in a stacked relationship with. The main slide lever 48 is coupled to the auxiliary slide lever 40 by a strong spring (not shown) and a suitable stopper that receives a spring force, and moves substantially integrally. This spring absorbs the sliding of the auxiliary slide lever 40 when the cassette pack C is engaged with the pack engagement lever 34 without moving the main slide lever 48. First
As shown in the figure, the main slide lever 48 has an oblique elongated hole 50 and a horizontal elongated hole 52 continuous with the oblique elongated hole 50. The main slide lever 48 is also provided with an elongated hole corresponding to the horizontal elongated hole 46 of the auxiliary slide lever 40.

A second pivot lever 54 is pivotally mounted about the same horizontal pivot pin 31 that pivotally mounts the pivotable second portion 30b of the elevator holder 30. A second swivel lever 54 is in the layer between the main slide lever 48 and the vertical side wall portion 12 of the chassis, and the swivelable second portion 30 of the elevator holder 30.
b is on the opposite side of the vertical sidewall portion 12 of the chassis. A suitable hole (not shown) is provided in the vertical side wall portion 12 of the chassis through which the arm of the second swivel lever 54 extends inwardly so that the second swivel lever 54 and elevator holder 30 And the rotatable second portion 30b of the. A torsion spring (not shown) is arranged on this arm portion, and when the elevator holder 30 is in the upper position, the elevator holder 20 is biased upward to move the elevator holder 30.
Is adapted to urge the elevator holder 30 downwards.

An engagement pin 56 is provided on the surface side of the second turning lever 54. The engagement pin 56 is inserted into the continuous slender long hole 50 and the horizontal long hole 52 of the main slide lever 48, and the engagement position changes while the main slide lever 48 slides. That is, when the main slide lever 48 is in the position relatively slid to the left as shown in FIG. 1, the engaging pin 56 engages with the horizontal elongated hole 52, and thus the second turning lever is provided.
54 does not pivot and the elevator holder 30 remains in the upper position. As the main slide lever 48 slides to the right, the engaging pin 56 comes into engagement with the oblique elongated hole 50, and then the engaging pin 56 pivots downward together with the second pivot lever 54, and the elevator holder 30 is swung to the lower position. The timing at which the elevator holder 30 is swung to the lower position is determined by the stroke of the horizontal elongated hole 52 after the main slide lever 48 starts sliding rightward.

As shown in FIG. 1, a rack 58 and a head stand engaging projection 69 projecting downward are provided at the lower end of the main slide lever 48. The rack 58 is arranged to engage the pinion 62 shown in FIG. 4, which is connected via an intermediate gear (not shown) to a drive gear 66 mounted on the output shaft of the electric motor 64. Therefore, the main slide lever 48 is moved from the electric motor 64 via the pinion 62 and the rack 58.
Can be driven. The auxiliary slide lever 40 slides together with the main slide lever 48.

As shown in FIG. 2, the head base 16 for supporting the magnetic head 14 is disposed on the bottom portion 10 of the lower horizontal wall of the chassis, and the guide groove 68 and the guide pin 70 engage the bottom portion 10 of the lower horizontal wall. On the other hand, it can be moved back and forth in a direction S perpendicular to the insertion direction IN of the cassette pack C. The head base engaging protrusion 60 at the lower end portion of the main slide lever 48 passes in front of the front end portion of the head base 16 and is a long slit provided in the bottom horizontal wall bottom portion 10 of the chassis so as to be positioned below the main slide lever 48. It passes through 72 and extends to the back side of the bottom portion 10 of the lower horizontal wall.

Referring to FIGS. 2 and 3, on the back side of the bottom portion 10 of the lower horizontal wall of the chassis, a protrusion engagement lever 74 and a dogleg drive head-rotating lever 76 are arranged in an overlapping manner. The protrusion engaging lever 74 is formed in a substantially U-shape, and a hole 78 for engaging the head base engaging protrusion 60 and a guide at a position aligned with the hole 78 are formed on the bottom side thereof. Pins 80 and are provided. The head base engaging protrusion 60 passes through the slit 72,
Since the guide pin 80 is also passed through the slit 72, the protrusion engagement lever 74 slides along the slit 72. A horizontal elongated hole 82 is provided on the upper side of the projection engaging lever 74, and an oblique elongated hole 84 is provided from the upper side to the side. These slots 82, 84 are continuous.

One end of the head base driving swivel lever 76 is rotatably supported on the bottom surface 10 of the lower horizontal wall of the chassis by a fulcrum pin 86, and an engaging pin protruding toward the protruding engaging lever 74 side in the middle part.
88 at the bottom of the chassis on the lower horizontal wall at the other end 10
A spring engaging protrusion 90 protruding toward the side is provided. The engaging pin 88 is inserted into the horizontal elongated hole 82 and the oblique elongated hole 84 of the projection engaging lever 74. Further, the spring engaging projection 90 projects through the hole 92 provided in the bottom portion 10 of the lower horizontal wall of the chassis to the surface (FIG. 2) of the bottom portion 10 of the lower horizontal wall, and immediately in front of the front end portion of the head base 14. Extend to. On the other hand, a hole 94 is provided at the center of the head base 16, and a corresponding spring engagement protrusion 96 is provided at the rear end of the hole 94. Connecting spring 98
Are located between the spring engagement lugs 90, 96 and are now located substantially within the holes 94. Therefore, the main slide lever 48
From the above, a connection mechanism to the head base 16 is formed via the head base engagement protrusion 60, the protrusion engagement lever 74, the head base drive turning lever 76, and the connection spring 98. The connecting spring 98 has relatively high rigidity, and can move the head base 14 back and forth in the S direction together with the head base drive turning lever 76. At the forward position, the head base is operated by the operation of a plunger (not shown) for fast-forwarding.
14 can be slightly retracted against the connecting spring 98.

Referring to FIGS. 1 and 4, a door opening / closing pin 106 is horizontally installed on the vertical wall portion 40b of the auxiliary slide lever 40, and a pair of door opening / closing levers 108,
110 is provided. One end of the first door opening / closing lever 108 has a pivot pin 112 fixed to the vertical side wall portion 12 of the chassis.
Be pivoted to. This pivot pin 112 is an auxiliary slide lever 4
0 and main slide lever 48 elongated hole 46 in the sliding direction
And the first door opening / closing lever 108 is supported outside the vertical wall portion 40b of the auxiliary slide lever 40. The pivot pin 112 is in a fixed position, and the presence of the slot 46 in the sliding direction allows the auxiliary slide lever 40 and the main slide lever 48 to slide relative to each other. An elongated hole 114 is provided at the other end of the first door opening / closing lever 108. Also,
The upper surface of the first cover opening / closing lever 108 is formed as a cam surface 116 having a convex portion. This cam surface 116 engages with the door opening / closing pin 106 when the door opening / closing pin 106 slides together with the auxiliary slide lever 40, and the first door opening / closing lever 108 is pivoted up and down around the pivot pin 112. .

The second door lever opening / closing lever 110 has an intermediate portion serving as a shaft portion, and is pivotally attached to a pivot pin 118 fixed to the vertical side wall portion 12 of the chassis. A pin 120 is provided at one end of the second cover opening / closing lever 110, and the pin 120 is inserted into the elongated hole 114 of the first cover opening / closing lever 108. The second door opening / closing lever
The other end of 110 serves as an engaging portion 122 that engages with an extended cylindrical portion d that is extended in the lateral direction from the lower end of the flyer D of the front plate P. The tip of the engaging portion 122 of the second door lever opening / closing lever 110 slightly warps upward, and the extended cylindrical portion d of the door door D
It is designed to wrap around. Further, a spring 124 is provided for urging the second door opening / closing lever 110 so as to move (downward) away from the extension cylindrical portion d of the door D. By this spring 124, the first door opening / closing lever 108
Receives an upward force (a direction in which it engages with the door opening / closing pin 106). Therefore, the spring 124 can be attached to the first door opening / closing lever 108 instead of the second door opening / closing lever 110, or can be a torsion spring instead of the coil spring.

Next, the operation will be described.

In the state of FIG. 1, when the cassette pack C is inserted into the door plate D of the front plate P, the door plate D opens inside the device,
The cassette pack C is engaged with the engaging portion 34a of the pack engaging lever 34, and the cassette pack C is manually pushed to advance the pack engaging lever 26. When the pack engaging lever 26 moves forward, the first turning lever 36 and the auxiliary slide lever 40 move, and the switch of the electric motor 64 is pushed at the position where the auxiliary slide lever 40 has moved slightly. Then, the electric motor 64 starts to operate, and the main slide lever 48 and the auxiliary slide lever 40 are slid rightward in FIG.

When the main slide lever 48 slides, the first swiveling lever 36 swivels counterclockwise in FIG. 4 to move the pack engaging lever 26 forward, and the cassette pack C moves away from the hand and is moved forward by an electric force. When the pack engaging lever 34 reaches a predetermined depth position, the upward pin 36b of the first swiveling lever 36 enters the slot 42 from the engaging recess 44, and
The main slide lever 48 and the auxiliary slide lever 40 can continue to slide with the turning lever 36 stopped at that position. And the second swivel lever
The engaging pin 56 of 54 is an oblong hole of the main slide lever 48.
Now engaged with 50, the second swivel lever 54 swivels downwards to lower the elevator holder 30 to the down position.

The main slide lever 48 and the auxiliary slide lever 40 slide further to the right, and the head base engaging protrusion 60 at the lower end portion of the main slide lever 48 moves the protrusion engaging lever 74 to the right in FIG. 2 (left in FIG. 3). Direction). Immediately after the elevator holder 30 is lowered to the lower position, the engaging pin 88 of the head base driving swivel lever 76 shifts from the horizontal long hole 82 of the projection engagement lever 74 to the diagonal long hole 84 to drive the head base. The swiveling lever 76 swivels clockwise in FIG. 2 to move the spring engaging projection 90 downward. Spring engagement protrusion 90
Moves the head base 16 forward through the connecting spring 98.
Therefore, the magnetic head 12 comes into contact with the tape of the cassette pack C and the tape can be reproduced.

On the other hand, the door opening / closing pin 106 also moves rightward together with the auxiliary slide lever 40. The door opening / closing pin 106 engages with the cam surface 116 of the first door opening / closing lever 108 in the fixed position, and the first door opening / closing lever 108 is moved to the peak of the cam surface 116 of the first door opening / closing lever 108 in FIG. Is pushed down in the clockwise direction, so that the second door opening / closing lever 110 is turned counterclockwise. For this reason, the engaging portion 122 of the second cover opening / closing lever 110 rises and lifts the extension cylindrical portion d to open the cover D, but at this time, the cassette pack C is already in the inner position. Then, when the tobilla opening / closing pin 106 passes the peak of the cam surface 116, the action of the spring 124 causes the first tobira opening / closing lever 106 to return in the counterclockwise direction and the second tobira opening / closing lever 110 to return in the clockwise direction. . Therefore, Tobira D is closed. Tobira D is closed during tape playback.

When the discharge command button provided on the front plate P is pressed, the electric motor 64 operates in the reverse direction to slide the main slide lever 48 and the slide lever 40 to the left. Door opening / closing pin 10
6 moves from right to left, and the first door opener lever 1
It moves along the cam surface 116 of 08 and pushes down the first door opening / closing lever 106, and thus lifts the engaging portion 124 of the second door opening / closing lever 110 to open the door D. The peak position of the cam surface 116 of the first door opening / closing lever 108 is located on the left side, and a long stroke is made to open the door door D while the door opening / closing pin 106 moves from right to left. Therefore, when the cassette pack C is discharged, the door D can be opened for a long time, and the cassette pack C can be discharged from the opened door D.

The elevator holder 30 rises immediately after the door D is opened in association with the slides of the main slide lever 48 and the slide lever 40. Then, the pack engaging lever 26 is retracted. During the retraction of the pack engagement lever 26, the door opening / closing pin 106 is separated from the cam surface 116 of the first door opening / closing lever 108, and the first door opening / closing lever 108 and the second door opening / closing lever 110 are moved by the spring 124. Is urged in the direction to close the door, but the doorbill D engages with the upper surface of the cassette pack C of the lifted elevator holder 30 and continues to open,
Therefore, the cassette pack C can be brought to the ejection position.

[Effect of device]

As described above, according to the present invention, a head base that supports a reproducing head, and a pack engaging member that is engageable with the cassette pack to insert the cassette pack into a predetermined position above the head base, An elevator holder that lowers the cassette pack to the level of the reproducing head at the predetermined position, a rack that is movably provided along a vertical side wall of the chassis, and that engages with a drive pinion, and an elevator holder for moving up and down. A main slide lever having an elongated hole including an oblique portion and a protrusion for driving a head base, coupled with the main slide lever so as to move substantially integrally with the main slide lever, and superposed on the main slide lever. A vertical wall portion and a horizontal upper wall portion formed by bending the vertical wall portion at a substantially right angle;
Further, an auxiliary slide lever having an elongated hole and a recess for engaging with the elongated hole formed in the horizontal upper wall portion, one end of which is connected to the pack engaging member and the other end of which is the auxiliary slide lever. A pin that is inserted into the slot and the locking recess of the lever, the pin engaging the locking recess of the auxiliary slide lever in the initial stage of movement of the main slide lever and thereafter A first swing lever that engages with the elongated hole of the auxiliary slide lever and moves the pack engaging member in the cassette pack insertion direction in the initial stage of the movement of the main slide lever is connected to the elevator holder. And an engaging pin that engages with the elongated hole of the main slide lever, and lowers the elevator holder at a middle stage of movement of the main slide lever.
And a protrusion engaging lever that engages with a protrusion of the slide lever and can move integrally with the main slide lever, and that is connected to the head base with a protrusion engaging lever having an elongated hole including an oblique portion. For driving the head base, which has an engagement portion and an engagement pin which engages with the elongated hole of the projection engagement lever, and which moves the head base in a direction toward the reproduction position in the latter stage of the movement of the main slide lever. Since it is equipped with a swivel lever, it is possible to insert and lower the cassette pack and move the head base forward with a common main slide lever and auxiliary slide lever in a timely manner. It is possible to eliminate the occurrence of such.

[Brief description of drawings]

FIG. 1 is a side view of a tape reproducing apparatus having a pack inserting mechanism according to the present invention, FIG. 2 is a plan view showing a head base portion of the tape reproducing apparatus of FIG. 1, and FIG. 3 is a bottom surface of FIG. FIG. 4 is a bottom view of the portion viewed from the back side, and FIG. 4 is a plan view showing the portion of the elevator holder. 14 ... Magnetic head, 16 ... Head stand, 30 ... Elevator holder, 34 ... Pack engaging lever, 36 ... First turning lever, 40, 48 ... Slide lever, 54 ... Second turning Lever, 60 ... Head stand engaging protrusion, 64 ... Electric motor, 74 ...
Protrusion engagement lever, 76 ...... Swing lever for driving the head base, 98
...... Connecting spring, 106 ...... Tobira open / close pin, 108,110
...... Tobira open / close lever.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kyoma Yoneya 1-2-2 Goshodori, Hyogo-ku, Kobe, Hyogo Prefecture Fujitsu Ten Ltd. (56) Reference JP-A-58-94157 (JP, A) JP-A-59-191162 (JP, A) JP-A-59-82658 (JP, A) Actually developed JP-A-62-113443 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A head base (1) supporting a reproducing head (14).
6), a pack engaging member (34) engageable with the cassette pack for inserting the cassette pack (C) into a predetermined position above the head stand, and the cassette pack at the predetermined position with respect to the reproducing head. An elevator holder (30) for lowering to a level and a rack (5) movably provided along the vertical side wall (12) of the chassis and engaging with the drive pinion (62).
8), an elongated hole (50, 52) including an oblique portion for moving up and down the elevator holder, and a projection (6) for driving the head base.
0) and a vertical wall portion (40b) which is coupled to the main slide lever so as to move substantially integrally with the main slide lever and is overlapped with the main slide lever (40b). A horizontal upper wall portion (40a) formed by bending the wall portion at a substantially right angle, and the horizontal upper wall portion has an elongated hole (42) and a locking recess (44) continuous with the elongated hole. An auxiliary slide lever (40) formed with a pin (36b), one end of which is connected to the pack engaging member and the other end of which is inserted into the elongated hole and the locking recess of the auxiliary slide lever. ), The pin engages with the locking recess of the auxiliary slide lever in the initial stage of the movement of the main slide lever and thereafter engages with the elongated hole of the auxiliary slide lever, At the initial stage of lever movement And a first turning lever (36) for moving the pack engaging member in the cassette pack insertion direction, and an engaging pin (56) that is connected to the elevator holder and engages with the long hole of the main slide lever. ),
A second swing lever (54) for lowering the elevator holder in the middle stage of movement of the main slide lever
A protrusion engagement lever (74) that is engaged with a protrusion of the slide lever and is movable integrally with the main slide lever, and that has a long hole (82, 84) including an oblique portion; An engaging portion (90) connected to the base and an engaging pin (88) that engages with the elongated hole of the protrusion engaging lever are provided, and the head base is attached at a later stage of the movement of the main slide lever. A pack inserting mechanism for a tape reproducing apparatus, which is provided with a head base driving swivel lever (76) for moving in a direction toward a reproducing position.