JPH0810869Y2 - Tape player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] In a tape reproducing apparatus using a spring for urging a pack engaging lever for sucking a cassette pack,
Even after the pack engagement lever is completely inserted, it receives the urging force of this spring, and the middle portion tends to be deformed upward in a round shape. The invention is
The pack engaging lever is provided with a laterally projecting lower surface protrusion that is slidable on the lower surface of the upper wall of the elevator holder at substantially both ends and an intermediate portion in the longitudinal direction to prevent such deformation.

[Industrial applications]

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

[Conventional technology]

In the tape reproducing device, when the cassette pack is inserted into the insertion slot, the cassette pack enters the elevator holder and the cassette pack is sucked to the insertion completion position in the back of the elevator holder, where the elevator holder descends and the cassette pack is magnetized. It is brought into an operating position where it engages with a head, a take-up reel or the like. For sucking the cassette pack, a pack engaging lever is provided so as to be movable along a guide groove provided on the upper wall of the elevator holder. The cassette pack engages with the pack engagement lever at the time of insertion, and then the pack engagement lever automatically moves to suck the cassette pack to the insertion completion position. To move the pack engagement lever, use an electric motor,
Alternatively, springs are used.

FIG. 6 shows an example of a pack engaging lever that draws in a cassette pack by using a spring. FIG. 6 shows the pack engagement lever 1 provided in association with the upper wall ET of the elevator holder, which is shown in a simplified manner. The pack engaging lever 1 has a downward claw 2 at one end and a vertical plate-shaped end receiver 3 at the other end. Cassette pack C is 6th
Inserted between the upper wall ET and the lower wall EB of the elevator holder as shown in the figure, and press the cassette pack C
Pushes the downward claw 2 of the pack engaging lever 1 along its tapered surface to reach the plate-shaped end receiver 3. At this time, the downward claw 2 of the pack engaging lever 1 engages with the hole of the cassette pack C (for engaging with the take-up reel). One end of a coil-shaped reversing spring 4 is attached to the pack engaging lever 1. When the cassette pack C is further pushed, the reversing spring 4 acts in the pack inserting direction, and the pack engaging lever 1 is moved in the direction of arrow A. Cassette pack C is pack engaging lever 1
It moves with it and reaches the insertion completion position.

[Problems to be solved by the device]

In the case of the pack engaging lever 1 that sucks the cassette pack C using the spring 4 as described above, when the cassette pack C and the pack engaging lever 1 reach the insertion completion position, the plate shape of the pack engaging lever 1 The end receiver 3 abuts on the fixed chassis, and the spring 4 keeps urging the pack engaging lever 1 in the pack inserting direction. The spring 4 is arranged on the upper side of the pack engaging lever 1 and urges the pack engaging lever 1 in the pack inserting direction and applies an upward force indicated by an arrow B to the pack engaging lever 1. Met. For this reason, the middle part of the pack engaging lever 1 tends to be deformed upward in a round shape. It should be noted that laterally extending projections 5 and 6 are provided at substantially both ends of the pack engaging lever 1, and these laterally projecting projections 5 and 6 are slidably engaged with the lower surface of the upper wall ET of the elevator holder, and the pack engaging lever 5 is provided. It is designed to prevent the lever 1 from rising. These lateral protrusions 5 and 6 can oppose the upward force of the spring 4, but since the lateral protrusions 5 and 6 are located at substantially both ends of the pack engaging lever 1, the distance between them is long. Since one end of the spring 4 is engaged with the intermediate portion of the pack engaging lever 1, the intermediate portion of the pack engaging lever 1 is deformed into a round shape. When the pack engagement lever 1 is maintained in such a state for a relatively long time, such deformation becomes a state close to permanent deformation.

As shown in FIG. 7, when the middle portion of the pack engaging lever 1 is deformed into a round shape, the tip end side of the pack engaging lever 1 is a free end, so that the downward claw 2 hangs downward.
Therefore, in such a state, when the cassette pack C is ejected and then reinserted, the tip of the cassette pack C is dislocated from the positional relationship corresponding to the taper surface of the downward claw 2 of the pack engaging lever 1. Then, the pack engaging lever 1 is pushed with the end surface of the cassette pack C hitting the tip of the downward claw 2 of the pack engaging lever 1, and only the engaging lever 1 moves to the insertion completion position. There is a problem that it ends up.

SUMMARY OF THE INVENTION An object of the present invention is to provide a pack insertion / ejection mechanism for a tape reproducing device, which prevents the middle part of the pack engagement lever from being bent upward by a spring in order to solve the above problems. It is to be.

[Means for solving the problem]

The tape reproducing apparatus according to the present invention is connected to a first holder member pivotally supported at one end thereof and the other end of the first holder member so that a cassette pack can be held in a substantially horizontal state and moved up and down. An elevator holder including a second holder member and having a guide groove provided on at least an upper wall of the first holder member, and a pack engagement lever movable along the guide groove provided on the upper wall of the elevator holder. And a spring that biases the pack engagement lever in the pack insertion direction with respect to the elevator holder, the pack engagement lever comprising:
An elastically deformable body, a pack engaging claw provided at one longitudinal end of the body and capable of engaging with the pack while elastically deforming the body, and an intermediate portion in the longitudinal direction of the body. A mounting portion of the spring, and an upper lateral projection protruding laterally beyond the width of the guide groove at the position of the mounting portion of the spring of the body and slidable on the upper surface of the upper wall of the elevator holder; A first downward lateral protrusion protruding laterally beyond the width of the guide groove at the position of the pack engaging claw of the body and slidable with the lower surface of the upper wall of the elevator holder; and the pack engaging member of the body. A second lower lateral projection protruding laterally beyond the width of the guide groove and slidable on the lower surface of the upper wall of the elevator holder at the end opposite to the joint claw, and the spring of the body. Mounting part and the A third lower lateral protrusion protruding laterally beyond the width of the guide groove and slidable on the lower surface of the upper wall of the elevator holder at a position near the mounting portion of the spring between the hook engaging claw. It is characterized by having.

[Action]

The upper lateral protrusion of the pack engaging lever is slidable on the upper surface of the upper wall of the elevator holder, and slidably supports the pack engaging lever on the elevator holder. The lower lateral projection of the pack engaging lever is slidable on the lower surface of the upper wall of the elevator holder. Since the springs are provided near both ends of the pack engaging lever in the longitudinal direction and near the mounting position of the spring, the spring for urging the pack engaging lever in the pack inserting direction applies an upward force to the pack engaging lever. In addition, these downward protrusions make contact with the lower surface of the upper wall of the elevator holder to reduce the deformation of the pack engaging lever, thus preventing the pack engaging lever from being deformed to affect the insertion and ejection of the cassette pack. it can.

〔Example〕

In FIGS. 3 and 4, a chassis 10 is provided inside the tape reproducing apparatus, a magnetic head, a capstan, a take-up reel, etc. (not shown) are attached to the chassis 10, and an elevator holder 12 is arranged above the chassis 10. To be done. The elevator holder 12 has a first holder member 12a and a second holder member 12b that are connected so that their ends overlap and bend.
Consists of The first holder member 12a can be swiveled around the shaft 14 at one end thereof, so that the second holder member 12b can be raised and lowered while being substantially horizontal. The turning drive mechanism of the first holder member 12a for raising and lowering the elevator holder 12 is omitted in the drawing. The cassette pack is designed to be inserted in the direction of arrow A. FIG. 5 is a front view of the second holder member 12b of the elevator holder 12 as seen from the direction of arrow A. Second holder member 12b of elevator holder 12
Has an open U-shaped cross section, and the upper wall 12c and the lower wall 1
Insert the cassette pack between 2d. In addition, the first holder member 12a of the elevator holder 12 does not have a lower wall,
2e overlaps with the upper wall 12c (Fig. 3).

As shown in FIGS. 3 and 4, the upper wall 12e of the first holder member 12a of the elevator holder 12 is provided with a guide groove 16 having a predetermined width and extending linearly in the pack insertion direction.
The front end of the guide groove 16 terminates in a bridge 18 slightly raised from the wall surface of the upper wall 12e of the first holder member 12a, and the rear end thereof terminates in a vertical end wall 20 of the holder. Second holder member 12
An opening 22 is provided in the upper wall 12c of b on the extension line of the guide groove 16, and a bridge 24 similar to the bridge 18 is provided at the rear end of the opening 22.

A pack engagement lever 26 is provided so as to be movable along the guide groove 16. The structure of the pack engaging lever 26 is shown in detail in FIGS. The pack engaging lever 26 has a substantially rectangular plate-shaped body 28 having a width slightly smaller than the width of the guide groove 16, and a downward claw 30 is formed at the tip of this plate-shaped body 28, and the rear end thereof is formed. Plate end receiver perpendicular to 32
Is formed. The downward claw 30 includes a taper 30a that rises toward the tip side, and the width of the tip portion 30b is narrower than the width of the guide groove 16. FIG. 2 shows the pack engagement lever.
The vertical side wall 16a (that is, the upper wall 12e) of the guide groove 16 when the 26 is attached is shown by a chain double-dashed line, and the guide portion and the lateral protrusion are formed with reference to the height position of the vertical side wall 16a of the guide groove 16. It is formed.

In the middle of the plate-shaped body 28, guide portions 34, 36 that are the same width as the plate-shaped body 28 and are bulged upward are formed, and these guide portions 34, 36 are slidably engaged in the guide groove 16. To do. However, these guides 34, 36 can pass under the bridges 18, 24. Therefore, the pack engagement lever 26 is
As shown in FIG. 4, the downward claw 30 at the tip end is located at the opening 22 of the second holder member 12b to the insertion completion position where the downward claw 30 crosses the bridge 18 as shown in FIG. , Or vice versa. In addition, in the discharging position shown in FIG.
Can be elastically deformed upward in the opening 22 when the cassette pack is inserted.

The plate-like body 28 has a relatively rear end and a rearmost plate-like end receiving member.
The bearing part 38, which is located in front of 32, has these guide parts 34, 3
It is located higher than 6 and larger than the width of the plate-like body 28. Both wing portions of the support portion 38 serve as upward lateral projections 38a and 38b, which project laterally beyond the guide groove 16 and can slide on the upper surface of the upper wall 12e of the first holder member 12a of the elevator holder 12. . Also, this bearing part 3
8 hits the bridge 18 as shown in FIG.

Further, the above-mentioned plate-like end portion receiving end 32 at the rearmost end is a guide groove
It has a width greater than 16 and thus projects laterally beyond the guide groove 16. The upper surface of the plate-shaped end receiver 32 serves as a downward lateral projection 32a, which can slide on the lower surface of the upper wall 12e of the first holder member 12a of the elevator holder 12. Further, a downward lateral projection 40 is formed on the side of the downward claw 30 at the tip of the plate-like body 28, and this also can slide on the lower surface of the upper wall 12e. Further, a downward lateral protrusion 42 is also formed in the middle of the plate-like body 28. The lower lateral protrusion 42 at this intermediate portion is located near the upper lateral protrusions 38a, 38b.

Referring to FIGS. 3 and 4, the pack engaging lever 26
One end of a coiled reversing spring 44 is locked to the bearing portion 38 of the. The other end of the reversing spring 44 is engaged with a mounting lever 46, and the mounting lever 46 is connected to a link 48.
It is connected to the eject lever 50 via. The eject lever 50 is maintained at the initial position by, for example, the return spring 52 and the stopper 54.

 Next, the operation will be described.

In the discharging position shown in FIG. 4, the spring force of the reversing spring 44 acts in the direction in which the pack engaging lever 26 is discharged, that is, in the direction opposite to the arrow A. When the cassette pack is inserted in the state of FIG. 4, the cassette pack engages with the pack engaging lever 26 as described with reference to FIG. 6, and when the cassette pack is further pushed in, the pack engaging lever 26 advances. The mounting lever 46 is in a fixed state, and only one end of the reversing spring 44 moves together with the pack engaging lever 26,
The reversing spring 44 comes to exceed the neutral point. Then, the spring force of the reversing spring 44 causes the pack engaging lever 26 to be inserted,
That is, it acts in the direction of the arrow A, the spring force moves the pack engaging lever 26, and the cassette pack is automatically sucked to the insertion completion position shown in FIG. Then, the elevator holder 12 is lowered,
The tape can be played back.

At the insertion completion position shown in FIG. 3, the spring force of the reversing spring 44 continues to act in the direction of inserting the pack engaging lever 26. As a result, the pack engaging lever 26 receives an upward force, and the middle portion of the pack engaging lever 26 tends to deform upward in a round shape. However, in the present invention, not only the downward lateral protrusions 32a and 40 at both ends in the longitudinal direction but also the downward lateral protrusions 42 at the intermediate portion are provided, so that the upward force of the reversing spring 44 is intermediate. The downward lateral projection 42 of the portion effectively receives the protrusion, and prevents or reduces the deformation of the pack engaging lever 26. Lower lateral protrusion of the middle part
The closer the 42 is located to the upper lateral protrusions 38a, 38b, the smaller the deformation of the pack engaging lever 26 can be made. In particular, as the lower lateral protrusion 42 of the intermediate portion is located closer to the supporting portion 38, which is the locking portion of the reversing spring 44, in the pack insertion direction and closer to the supporting portion 38,
26 deformation can be reduced.

When ejecting the cassette pack from the insertion completion position shown in FIG.
And the mounting lever 46 is displaced to the position shown by the broken line in FIG. In this case, the pack engaging lever 26 is in a fixed state, and only one end of the reversing spring 44 is attached to the mounting lever 46.
With it, which causes the reversing spring 44 to cross the neutral point. Then, the spring force of the reversing spring 44 acts in the direction of ejecting the pack engaging lever 26, that is, in the direction opposite to the arrow A. Therefore, the pack engaging lever 26 is ejected by the spring force of the reversing spring 44. Then, when the eject lever 50 is released, the link 48 and the mounting lever 46 return to the initial position, and the action direction of the reversing spring 44 is maintained in the pack discharging direction (FIG. 4).

[Effect of device]

As described above, according to the present invention, one end of the cassette holder is pivotally supported and the other end of the first holder member is connected to hold the cassette pack in a substantially horizontal state. And an elevator holder having a guide groove formed on at least an upper wall of the first holder member, and movable along a guide groove formed on an upper wall of the elevator holder. A pack engagement lever,
A spring for urging the pack engaging lever with respect to the elevator holder in the pack insertion direction, the pack engaging lever being provided on an elastically deformable body, and one longitudinal end portion of the body, A pack engaging claw capable of engaging with a pack while elastically deforming the body, a mounting portion of the spring provided at an intermediate portion in the longitudinal direction of the body, and a position of the mounting portion of the spring of the body. An upper lateral protrusion protruding laterally beyond the width of the guide groove and slidable on the upper surface of the upper wall of the elevator holder, and a lateral direction wider than the width of the guide groove at the position of the pack engaging claw of the body. And a first downward lateral projection that is slidable on the lower surface of the upper wall of the elevator holder, and is laterally wider than the width of the guide groove at the end of the body opposite to the pack engaging claw. Protruding into At a position close to the spring mounting portion between the spring mounting portion and the pack engaging claw of the body, and the second lower lateral protrusion that is slidable on the lower surface of the upper wall of the elevator holder. Since it is configured to have a third downward lateral protrusion that is slidable to the lower surface of the upper wall of the elevator holder and projects laterally beyond the width of the guide groove, the pack engagement lever is attached in the pack insertion direction. Even if the biasing spring exerts an upward force on the pack engagement lever,
These downward lateral projections contact the lower surface of the upper wall of the elevator holder to reduce the deformation of the pack engaging lever, and thus prevent the pack engaging lever from being deformed so as to affect the insertion and ejection of the cassette pack.

[Brief description of drawings]

FIG. 1 is a plan view of a pack engaging lever according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 shows a pack insertion completion state of a pack inserting / ejecting mechanism of a tape reproducing mechanism according to the present invention. FIG. 4 is a plan view showing a pack discharge state of the same pack insertion / ejection mechanism, FIG. 5 is a front view of an elevator holder, FIG. 6 is a view explaining a pack engaging lever of a conventional technique, and FIG. The figure is a view showing an example in which the pack engaging lever of the prior art is modified. 12 ... Elevator holder, 12e ... Upper wall, 16 ... Guide groove, 26
... pack engaging lever, 30 ... downward claw, 32 ... plate-shaped end receiving part, 32a ... downward lateral projection, 34, 36 ... guide part, 38 ...
Bearing portions, 38a, 38b ... Upward lateral projections, 40,42 ... Lower lateral projections, 44 ... Reversing spring, 50 ... Eject lever.

Claims (1)

[Scope of utility model registration request] 1. A first holder member, one end of which is pivotally supported, and a second holder, which is connected to the other end of the first holder member and is capable of raising and lowering while holding a cassette pack in a substantially horizontal state. An elevator holder having a guide groove formed on at least an upper wall of the first holder member, and a pack engagement lever movable along the guide groove formed on the upper wall of the elevator holder, A pack engaging lever for urging the pack engaging lever with respect to the elevator holder in the pack inserting direction, the pack engaging lever being provided at an elastically deformable body, and one end portion in the longitudinal direction of the body, A pack engaging claw capable of engaging with a pack while elastically deforming the body, a mounting portion of the spring provided at an intermediate portion in the longitudinal direction of the body, and a position of the spring mounting portion of the body at the position of the guard. An upper lateral projection protruding laterally beyond the width of the guide groove and slidable on the upper surface of the upper wall of the elevator holder, and laterally wider than the width of the guide groove at the position of the pack engaging claw of the body. A first downward lateral projection protruding to the lower surface of the upper wall of the elevator holder, and a lateral direction larger than the width of the guide groove at the end of the body opposite to the pack engaging claw. A second downward lateral projection protruding to and slidable on the lower surface of the upper wall of the elevator holder, and close to the spring mounting portion between the spring mounting portion of the body and the pack engaging pawl. A tape reproducing device comprising a third downward lateral projection protruding laterally beyond the width of the guide groove at a position and slidable with the lower surface of the upper wall of the elevator holder.