JPH0373944B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement for stably holding a tape cassette at a loading position with a simple structure in a cassette type tape recorder equipped with a movable cassette holder.

[Technical background of the invention and its problems]

A tape drive mechanism including a reel shaft and a capstan shaft is mounted on the main board, a cassette holder is movably attached to this main board, and when a tape cassette is inserted into this cassette holder, the cassette holder moves and moves the tape cassette. When the cassette holder is moved in the opposite direction by the eject operation, the tape cassette comes off from the reel shaft and capstan shaft, and the eject member operates to remove the tape cassette in the cassette holder. Cassette type tape recorders that are pushed back in the ejection direction are well known.

In this type of tape recorder, the cassette holder is always biased toward the operating position (the position where the tape cassette is loaded onto the reel shaft and the capstan shaft), and the cassette holder is kept at the stop position (where the tape cassette can be inserted and removed). By inserting the tape cassette, the cassette holder moves to the operating position by releasing the locked state at the tape cassette position.

Therefore, in order to maintain a stable loading state of the tape cassette, it is necessary to bias the cassette holder toward the operating position using a strong spring.

However, on the other hand, if the spring that urges the cassette holder toward the operating position is strengthened, a strong force will be required for the eject operation to move the cassette holder toward the stop position. the result,
Manual operation results in poor operability, and when a drive source such as a magnetic plunger is used, the drive source becomes large.

[Purpose of the invention]

The present invention was developed based on the above circumstances, and its purpose is to stably hold a tape cassette in a loading position with a simple structure, and to
Moreover, it is an object of the present invention to provide a cassette type tape recorder that allows easy ejection operations.

[Summary of the invention]

The cassette tape recorder of the present invention has the following features.
It has the following configuration requirements.

The main board is equipped with a tape drive mechanism including a reel shaft and a capstan shaft.It has a cassette insertion/extraction port on one end for inserting and removing a tape cassette in the longitudinal direction, and the inserted tape cassette is loaded onto the reel shaft and capstan shaft. A cassette holder attached to the main board so as to be movable forward and backward between an operating position and a stop position that allows the tape cassette to be inserted and removed from the cassette insertion/extraction opening.A spring holder attached to the cassette holder so as to be able to reciprocate. Member: An eject member that is attached to the cassette holder so as to be able to reciprocate in the tape cassette insertion/removal direction, moves forward by being pushed into the tape cassette inserted into the cassette holder, and pushes the tape cassette back in the ejecting direction during backward movement. When the eject member is stretched between the eject member and the spring receiving member, and the spring member is moving in its forward movement direction, and the eject member is at a position halfway through its movement range, and the eject member is in the forward movement direction. an eject spring whose elastic displacement is maximum when the cassette holder is moved to a position in the middle of its movement range; a locking member that is biased and moves in the opposite biasing direction in conjunction with the insertion operation of the tape cassette into the cassette holder, thereby releasing the locked state; It is constantly urged in the forward direction by a moving spring and is connected to the spring receiving member via a connecting rod, and when moving in the backward direction, the spring receiving member is moved in the backward direction. , an eject operation member that moves the spring receiving member forward during forward movement; an eject operation member that is reciprocably mounted on the main board, is connected to the cassette holder, and receives the elasticity of the cassette pressing spring to move the cassette holder from the stop position toward the operating position; and further, when the cassette holder is in the operating position, the cassette holder is urged toward the operating position by simultaneously receiving the elasticity of the return spring and the eject spring via the eject operation member,
This pushes the tape cassette inserted into the cassette holder toward the main board, and when the eject operating member moves back against the return spring, the eject operating member moves the cassette in the direction against the spring. In the above configuration, the eject spring that pushes back the tape cassette in the ejecting direction also acts as a cassette presser, so the cassette presser spring is lightened and the tape cassette is not loaded. can be made stable.

[Embodiments of the invention]

First, the embodiment shown in FIGS. 1 to 4 will be described.

FIG. 1 shows a plan view, and a tape drive mechanism including a pair of reel shafts 2a, 2b, capstan shafts 3a, 3b, and a motor 4 for rotationally driving these is mounted on the top side of the main board 1. has been done.
The motor 4 simultaneously rotates both capstan shafts 3a and 3b in their respective tape feeding directions, and alternatively rotates a pair of reel shafts 3a and 3b in their respective tape winding directions.

Further, on the upper surface of the main board 1, a magnetic head 5 for recording and reproducing and pinch rollers 6a and 6b corresponding to each capstan shaft 3a and 3b are mounted.

Furthermore, a cassette holder 7 is mounted on the top surface of the main board 1.
is installed. This cassette holder 7
is a rotary plate 8 that can freely rotate in the vertical direction (direction perpendicular to the plane of the paper) about the left edge in FIG. 1;
The cassette inserter 9 is supported rotatably in the vertical direction (direction perpendicular to the plane of the paper) about the right edge of the rotary plate 8 as an axis. The amount of upward rotation of the rotating plate 8 is regulated by a stopper 10 formed on the upper side wall of the main board 1.
Due to the presence of the rotating plate 8 and the cassette insert 9
is held substantially parallel to the main substrate 1 after moving upward.

The cassette inserter 9 has a cassette insertion/ejection port 11 on the right end side in FIG.
1 through which the tape cassette 12 can be inserted and removed. Then, with the tape cassette 12 inserted into the cassette inserter 9, the rotating plate 8 rotates downward, thereby removing the tape cassette 12.
are loaded onto the reel shafts 2a, 2b and capstan shafts 3a, 3b. Here, the rotating plate 8 rotates downward to move the tape cassette 12 onto the reel shaft 2.
a, 2b and the capstan shafts 3a, 3b are loaded into the "operating position" of the cassette holder 7.
The position where the rotating plate 8 rotates upward and allows the tape cassette 12 to be inserted and removed from the cassette insertion/ejection opening 11 is referred to as the "stop position" of the cassette holder 7.

When the cassette holder 7 moves from the stop position to the operating position, the magnetic head 5 moves downward in FIG. becomes. Also, when the magnetic head 5 is inserted into the tape cassette 12 in this way, the pinch roller on the same side as the reel shaft driven by the motor 4 is pressed against the capstan shaft on the same side. I come to do it. For example, when the right reel shaft 2a is being driven, the right pinch roller 6a comes into contact with the right capstan shaft 3a. In this way, the magnetic tape is driven rightward (or leftward), and a recording or reproducing operation is performed.

Note that reference numerals 13 and 14 in FIG. 1 are operating members for fast forwarding the tape. These operating members 13 and 14 are arranged above the magnetic head 5 so as to overlap each other, and are freely movable back and forth in the left and right directions in the figure. Further, they are constantly urged to the right by tension springs 13a and 14a, respectively. By moving one operating member 13 to the left, the rotational force of the motor 4 is transmitted to the right reel shaft 2a as high-speed rotation, and by moving the other operating member 14 to the left, the rotational force of the motor 4 is transmitted to the right reel shaft 2a. The rotational force is transmitted to the left reel shaft 2b as high-speed rotation.

A spring receiving member 15 is rotatably mounted on the upper surface of the rotating plate 8, with one end being pivotally supported by a shaft 15a.

Further, an eject member 16 is attached to the rotary plate 8 and is slidable in the insertion/removal direction of the tape cassette 12 (left-right direction in FIG. 1).

The spring receiving member 15 is arranged with its rotating end facing the eject member 16 side, and the amount of rotation is regulated by an arcuate hole 17 provided in the rotating plate 8. And the eject member 16 and the spring receiving member 1
An eject spring 18 made of a deployment spring is hung between one end of the spring 5 and one end of the spring 5.

The ejecting member 16 has a contact portion 19 at one end (the left end in FIG. 1) with which the tape cassette 12 inserted into the cassette inserter 9 comes into contact, and the other end with which the tape cassette 12 inserted into the cassette inserter 9 comes into contact. The tape cassette 12 has an engaging claw portion 20 that engages with one reel hub hole of the tape cassette 12.

In addition, a plate-shaped locking member 2 is provided on the lower surface side of the rotating plate 8.
1 is rotatably mounted coaxially with the spring receiving member 15. This locking member 21 has a contact piece 22 located on the line of motion of the eject member 16.
and a locking portion 23 that selectively locks the upper edge of the side wall of the main board 1 to lock the cassette holder 7 in the operating position.
and the locking portion 2 is fixed by the tension spring 24.
3 is constantly urged to rotate in the direction in which it is locked to the upper edge of the side plate of the main board 1.

FIG. 2 is a side view of FIG. 1 viewed from the direction of the arrow. However, the motor 4 is omitted.

As shown in FIG. 1, an eject operation member 25 is attached to the outer surface of the side plate of the main board 1 so as to be movable back and forth in the left and right directions in FIGS. The eject operating member 25 has an engaging portion 26 bent at the left end position, and is connected to the spring receiving member 15 via a connecting rod 27. Further, the eject operation member 25 is always urged rightward by a return spring 28 rather than a tension spring. As shown in FIGS. 1 and 2, this eject operation member 25 is moved in the right direction (return direction) by the return spring 28.
1, the spring receiving member 15 is moved to the right (return direction) as shown in FIG. 1, and the eject operating member 25 is moved to the left against the return spring 28. At the same time, the spring receiving member 15 also rotates to the left (forward direction).

Further, a plate-shaped operating force transmitting member 29 is attached to the outer surface of the side plate of the main board 1 at a position below the eject operating member 25 so as to be movable forward and backward in the left-right direction in FIG. The operating force transmitting member 29 is always urged rightward by a return spring 30 made of a tension spring. When the eject operating member 25 moves to the left, the operating force transmitting member 29 receives the pressing force of the operating member 25 at the pressure receiving portion 31, and moves to the left together with the operating member 25. The operating force transmission member 29 also includes a switch operating piece 32 and a bent engagement piece 33.
In step 2, the user operates a changeover switch (not shown) for switching between the tape recorder and the radio (not shown) installed in parallel with the tape recorder. That is, when the operating force transmitting member 29 is moving to the left as shown in FIG. 2, the changeover switch enables the radio, and conversely, when the operating force transmitting member 29 is moving to the right as shown in FIG. The changeover switch enables the tape recorder.

Further, on the outer surface of the side plate of the main board 1, a plate-shaped interlocking member 3 is provided at a position in front of the eject operation member 25 and the operation force transmission member 29 (left position in FIG. 2).
4 is rotatably mounted around a shaft 35 as a fulcrum. This interlocking member 34 is connected to a connecting pin 37 that fits into a long groove 36 provided in the side plate of the rotating plate 8 of the cassette holder 7, and to the engaging portion 26 of the eject operation member 25 from the right side in FIG. A cassette holder made of a tension spring, which has a pressure receiving piece 38 that comes into contact and receives the pressing force from the return spring 28, and engaging protrusions 39 and 40 located before and after the engaging piece 33 of the operating force transmitting member 29. The spring 41 is always biasing the spring 41 to rotate counterclockwise in FIG.

Next, the operation will be explained.

Figures 1 and 2 show the stopped state.
In this state, the eject member 16 is moving in the backward movement direction (to the right in the figure) due to the elasticity of the eject spring 18. Furthermore, the cassette holder 7 is at a stop position separated from the main board 1, and the locking part 23 of the locking member 21 locks on the upper edge of the side plate of the main board 1, preventing the cassette holder 7 from moving to the operating position. are doing. Further, the spring receiving member 15 receives the elastic force of the return spring 28 via the connecting rod 27 and the eject operation member 25, and therefore moves in the backward motion direction (the direction in which the eject spring 18 is loaded). On the other hand, the operating force transmitting member 29 has its engagement piece 33 in contact with the engagement protrusion 40 of the interlocking member 34, and is prohibited from returning to the right in the figure by the return spring 30. Note that although the interlocking member 34 is biased to rotate in the counterclockwise direction in the figure (the direction that moves the cassette holder 7 to the operating position) by the elasticity of the return spring 30 and the cassette pressing spring 41, it is not possible to rotate it in that direction. Movement is prohibited by the engagement between the long groove 36 and the connecting pin 37.

Therefore, when the tape cassette 12 is inserted into the cassette holder 7 from the cassette insertion/ejection opening 11 in the longitudinal direction and in a state substantially parallel to the main board 1,
The tape cassette 12 presses the contact portion 19 of the eject member 16 located on the insertion line of the tape cassette 12, and the eject member 16
moves forward against the eject spring 18.

As the eject member 16 moves, the amount of elastic deformation of the eject spring 18 gradually increases, and when the amount of elastic deformation exceeds the maximum position, the elastic force of the eject spring 18 causes the eject member 16 to move forward. It acts to move in the direction. Therefore, no force is required to push the tape cassette 12, and the tape cassette 12 is pulled into the cassette holder 7 by the elastic force of the eject spring 18.

Subsequently, the eject member 16 contacts the abutting piece 22 of the locking member 21 and pulls the locking member 21 against the spring 24.
Rotate it against the Therefore, the locking portion 23 of the locking member 21 comes off the upper edge of the side plate of the main board 1 (see FIG. 3), and the rotating plate 8 and the interlocking member 34 of the cassette holder 7 are released from the return spring 30 and the cassette pressing spring 41. The tape cassette 12 is rotated downward under the elastic force, and the cassette insert 9 is also lowered to load the tape cassette 12 onto the reel shafts 2a, 2b and capstan shafts 3a, 3b (see Fig. 4). ).

3 and 4 (a side view of FIG. 3 viewed from the direction of the arrow) show a cassette loaded state, that is, a state in which the cassette holder 12 has been moved to the operating position. In this state, the rotation of the interlocking member 34 causes the engagement piece 33 of the operating force transmission member 29 to move to the engagement protrusion 4.
0, the operating force transmission member 29 returns to the return spring 30.
Returns to the right in the figure. At this time, the movement of the switch operation piece 32 causes a changeover switch (not shown) to change over, and the tape recorder becomes operable.

Furthermore, the engaging portion 26 of the eject operation member 25 presses the pressure receiving piece 38 of the interlocking member 34 by the elastic force of the return spring 28, and this pressing force rotates the interlocking member 34 counterclockwise in FIG. act in the direction.

On the other hand, the elastic force of the eject spring 18 is transmitted to the eject operation member 25 via the connecting rod 27, but this elastic force is also transmitted like the return spring 28.
acts on the eject operation member 25 in the right direction,
Furthermore, it acts counterclockwise on the interlocking member 34.

In this way, the elastic forces of the return spring 28 and the eject spring 18 act on the interlocking member 34 to rotate it counterclockwise in cooperation with the cassette pressing spring 41, and further rotate the rotating plate 8 clockwise. It acts to rotate. Therefore, the cassette inserter 9 is biased toward the main board 1 by the elastic forces of the return spring 28, eject spring 18, and cassette pressing spring 41, and the tape cassette 12 inserted therein is stabilized at the loading position. It comes to hold.

Note that the motor 4 is started by switching the changeover switch, and one reel shaft (2a or 2
b) and both capstan shafts 3a and 3b start rotating in a predetermined direction, and at the same time the magnetic head 5 moves toward the tape cassette 12 and comes into contact with the magnetic tape, and is also receiving the rotational force of the motor 4. Pinch roller (6a or 6) on the same side as the other reel shaft
b) is the corresponding capstan shaft (3a or 3
b) Pressure contact is made to form a recording or playback mode.

Next, when stopping and taking out the tape cassette 12, the eject operation member 25 can be pushed to the left in the figure. In this case, the eject operating member 25 presses the pressure receiving portion 31 of the operating force transmitting member 29 to move the transmitting member 29 in the same direction.
Then, the changeover switch (not shown) switches the radio to the operable side again, and the engagement piece 33 presses the engagement protrusion 39 of the interlocking member 34 to rotate the interlocking member 34 clockwise in the figure. Therefore, the rotating plate 8 rotates counterclockwise, and the cassette insert 9 rises to move the tape cassette 12 onto the reel shafts 2a, 2b and capstan shafts 3a, 3.
It will be pulled out upwards from point b.

Further, by pushing the eject operating member 25, the spring receiving member 15 is rotated in the counterclockwise direction in FIG. 3, that is, in the forward movement direction, via the connecting rod 27.
Reverse the eject spring 18. Therefore, the eject member 16 moves to the right in the figure under the elastic force of the eject spring 18, and the tape cassette 12
will be moved in the direction of extraction. The locking member 21 is returned clockwise by the tension spring 21 to lock the locking portion 23 to the upper edge of the side plate of the main board 1, thereby holding the cassette holder 7 at the stopped position. Then, when the eject operation member 25 is released, this member is returned by the return spring 28, and the first
The stopped state shown in FIG. 2 is reached.

[Effects of the Invention] As described above, according to the present invention, the eject spring that pushes back the tape cassette in the ejecting direction also functions as a cassette presser, so that the weight of the cassette presser spring can be reduced, and moreover, the eject spring that pushes back the tape cassette in the ejecting direction The loading state can be made stable, and the initial effect can be achieved with a simple configuration.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view showing a stopped state, and Fig. 2 is a - of Fig. 1.
3 is a plan view showing the operating state, and FIG. 4 is a view taken in the direction of the - arrow in FIG. 3. 1...Main board, 2a, 2b...Reel shaft, 3
a, 3b... Capstan shaft, 7... Cassette holder, 12... Tape cassette, 15... Spring receiving member, 16... Eject member, 18... Eject spring, 21... Locking member, 24... Tension Spring, 25...Eject operation member, 27...Connection rod, 28...Return spring, 34...Interlocking member, 41
...Just press the cassette.

Claims (1)

[Claims] 1. Reel shafts 2a, 2b and capstan shaft 3
It has a main board 1 equipped with a tape drive mechanism including tape cassettes 1a and 3b, and a cassette insertion/removal port on one end for inserting and removing the tape cassette 12 in the longitudinal direction, and the inserted tape cassette 12 is inserted into and removed from the reel shafts 2a and 2b. and a cassette holder 7 attached to the main board 1 so as to be movable back and forth between an operating position where the tape cassette 12 is loaded onto the capstan shafts 3a and 3b and a stop position where the tape cassette 12 can be inserted and removed from the cassette insertion/ejection opening. A spring bearing member 15 is attached to the cassette holder 7 in a reciprocating manner, and a tape cassette 12 is attached to the cassette holder 7.
A tape cassette 12 is inserted into the cassette holder 7 so as to be able to reciprocate in the direction of insertion and removal.
An eject member 16 that is pushed in and moves forward, and pushes back the tape cassette 12 in the ejecting direction during backward movement.
This eject member 16 and the spring receiving member 15
The spring receiving member 15 is moved in its forward movement direction, and the ejecting member 1
6 is in the middle of its movement range, and when the eject member 16 is moving in its forward movement direction and the spring receiving member 15 is in the middle of its movement range, the amount of elastic displacement is maximum. The eject spring 18 is capable of locking the cassette holder 7 in a stopped position and is always biased in the locking direction, and is unloaded in conjunction with the insertion operation of the tape cassette 12 into the cassette holder 7. a locking member 21 that moves in the forward movement direction and thereby releases the locked state; It is connected to the member 15 via a connecting rod 27, and when moving in the backward direction, the spring receiver member 15 is moved in the backward direction, and when moving forward, the spring receiver member 15 is moved in the forward direction. an eject operation member 25 which is attached to the main board 1 so as to be reciprocally movable, is connected to the cassette holder 7, and receives the elastic force of the cassette pressing spring 41 to eject the cassette holder 7.
is always biased toward the operating position from the stop position, and furthermore, when the cassette holder 7 is in the operating position, the return spring 28 and the eject spring 18 are
At the same time, the tape cassette 12 inserted into the cassette holder 7 is pressed toward the main board 1, and the eject operation member 25 is pushed toward the main board 1. an interlocking member 34 that moves the cassette holder 7 to a stop position by moving in a direction against the cassette pressing spring 41 by the eject operation member 25 when the cassette holder 7 moves back against the return spring 28; A cassette type tape recorder characterized by: