JPH0453023B2 - - Google Patents

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Industrial field of application B. Summary of the invention C. Prior art D. Problem to be solved by the invention E. Means for solving the problem F. Example G. Effect of the invention A. Industrial field of application. This relates to the loading mechanism of the.

B. Summary of the Invention The present invention provides a loading mechanism configured to lock the switch operating member as it is in order to minimize the interval between the lock position of the cassette and the timing at which the switch is pressed and perform a smooth loading operation. It is.

C. PRIOR TECHNOLOGY In tape players, the loading mechanism for setting the cassette at the playback/recording position has conventionally been one in which the cassette is pushed in by hand. In most cases, a cassette inserted into the insertion slot on the front of the tape player is pulled into the internal playback/recording position using the driving force of a motor.

In other words, in a loading mechanism that utilizes the driving force of a motor, when a cassette is manually pushed into the insertion slot to a certain position, a member interlocking with the cassette presses a switch, and the motor starts rotating in response to a command from this switch. Then, the loading mechanism operates to pinch the cassette and pull it into the interior.

By the way, in such a loading mechanism, if you release your hand from the cassette immediately after turning on the switch, the cassette will be exposed to the outside before the loading mechanism pulls it in due to the force of the spring for taking out and the vibration of the vehicle. There is a risk of it being ejected. However, even in this case, the loading mechanism continues to operate, so the cassette may get stuck in the insertion slot, or the positional relationship may shift even if you notice that the cassette has been ejected and reinserted it. If the cassette is lowered to the reel base side before being fully retracted, problems such as the cassette riding on the reel shaft may occur.

In order to eliminate such inconvenience, the applicant:
As previously described in Japanese Patent Application Laid-Open No. 59-90254,
He proposed an invention that locks the cassette so that it cannot be removed after it has been inserted into the switch's operating position. As shown in FIG.
1 is provided with a pressing part 12, and a locking member 13 called a release arm is provided on the side of the push-in position of the pack stopper 11. When the pack stopper 11 is inserted, the pack stopper 11 presses against the locking member 13.
However, once the cassette reaches the position where it presses the switch, the locking member 13
The locking part 14 is the pressing part 1 of the pack stopper 11.
2 to prevent the pack stopper 11 and the cassette interlocked with it from returning to their original positions.

D Problems to be Solved by the Invention It is true that the invention described above can prevent the cassette from being inadvertently ejected after the switch is turned on, and has certain effects in preventing malfunctions during loading. In actual use, the following problems arose.

First, in the above invention, the locking member 13 for locking the cassette is located apart from the switch 15, and the pressing member 16 of the switch 15 and the locking member 13
Since several intermediary members 17 are provided between the cassette and the cassette, it is difficult to match the timing of pressing the switch with the timing of locking the cassette. That is, when locking the cassette,
It goes without saying that the switch is always turned on when the cassette is locked and the loading operation begins, but it is also desirable to have a configuration in which the switch is not turned on as much as possible before the cassette is locked.To do this, it is important to make the locking and switch closing timings coincide as much as possible. desirable. However, in the above invention, since a plurality of intermediate members are arranged between the lock position of the cassette and the switch operation member, it is difficult to achieve highly accurate timing alignment, and as a result, the positional accuracy of the loading operation is reduced. There were some flaws that I couldn't fully address. Further, since the locking mechanism is provided on the top surface of the pack guide, a large space is required, which is an obstacle to reducing the space.

E. Means for Solving the Problems The present invention has been proposed to solve the problems of the prior art as described above. The purpose of the present invention is to provide a loading mechanism that allows for smooth loading.

In order to achieve the above object, the loading mechanism of the present invention is provided with an eject arm that drives a pack stopper in conjunction with a drive motor and is released from the motor except when the power is turned on, so that the cassette can be inserted to a predetermined position. Then, the power is turned on by pressing the switch with the eject arm to rotate the motor, and the driving force of the motor pulls in and moves the pack stopper that is linked to the cassette, thereby performing the loading operation of the cassette. (a) A configuration in which the pack stopper and the eject arm are linked, so that the retraction stroke of the pack stopper due to insertion of the cassette corresponds to the movement stroke of the eject arm to the switch pressing position, and (b) a rotatable structure that locks the eject arm. A locking member is provided, and the eject arm is provided with a locked portion that is locked to the locking member, c. The locking member is biased in the locking direction by a spring, and the eject arm moves to the switch pressing position. The present invention is characterized in that the eject arm is locked at the switch pressing position.

F. Embodiment Next, one embodiment of the loading mechanism according to the present invention will be specifically described with reference to the drawings.

As shown in FIGS. 1A and 1B, a pack stopper 1 for suctioning a cassette is interlocked with an eject arm plate 3, which is a switch operating member, via an eject arm 2. Eject arm 2
The interlock between the eject arm plate 3 and the eject arm plate 3 is achieved by inserting the engaging pin 3a of the eject arm plate 3 into an engaging hole 2a formed at the base end of the eject arm 2 and consisting of an engaging part and a relief part. The engagement hole 2 of the eject arm 2 is
The engaging pin 3a of the eject arm plate 3 engages with the engaging portion of the eject arm plate 3, and the eject arm plate 3 rotates around the shaft 2b.
The forward and backward movements of the body are linked. This eject arm plate 3 is provided with a switch insertion part 4 on the side surface of its distal end, and when the eject arm plate 3 comes forward from a predetermined position, it presses a switch link 5 and releases a switch 6 via the link 5. The government is beginning to make investments in the area.

Further, an eject lock plate 7, which is a locking member for locking the eject arm plate 3, is provided on the distal end side of the eject arm plate 3, and the eject lock plate 7 is disposed at the tip end of the eject arm plate 3. Ektrotsuk plate 7
A lock pin 7a provided on the eject arm plate 3 engages with a locked portion 3b provided on the eject arm plate 3. The ejection lock plate 7 is configured to be horizontally rotatable and movable up and down, and is biased in the locking direction (clockwise in the figure) around the shaft by a spring (not shown). It is biased upward. Furthermore, a taper 3c is provided behind the locked portion 3b of the eject arm plate 3 for pushing the lock pin 7a downward, and after being locked at the locked portion 3b, the eject arm plate 3 is further moved. When this happens, the ejection lock plate 7 is moved downward via the lock pin 7a.

The present embodiment having the above configuration operates as follows.

That is, when the cassette is inserted during loading, the pack stopper 1 moves backward, and as a result,
The eject arm 2 rotates clockwise in the figure.
At this time, since the engagement pin 3a of the eject arm plate 3 is in the engagement part of the engagement hole 2 of the eject arm 2, as the eject arm 2 rotates,
The eject arm plate 3 starts moving forward.
As a result, the switch input part 4 of the eject arm plate 3 presses the switch link 5, and the switch is inputted through this, and the driving part of the loading mechanism is started.

After this, when the cassette is further pressed a little, the eject arm plate 3 moves forward by a minute stroke. As a result, the locked portion 3b at the tip of the ejector arm plate 3 presses the lock pin 7a of the ejector lock plate 7, and moves the ejector lock plate 7 toward the unlocking side, thereby temporarily disengaging the lock pin 7a. exceed. Immediately thereafter, the locking pin 7a returns to the locking direction due to the urging force of the spring and locks the locked portion 3b of the ejector arm plate 3, so that the ejector arm plate 3 is locked at the same position.

At this point, the drive section is already in operation, so the eject arm plate 3 is further advanced by the drive force of the motor. In conjunction with this, the eject arm 2 also rotates further and stops when the pack stopper 1 is moved to the cassette suction position.

Furthermore, when the eject arm plate 3 moves forward, its taper 3c pushes the lock pin 7a,
Move the ejection lock plate 7 downward,
Continue to move forward to the loading end position and stop.

In this way, since the eject arm plate 3, which is a switch operation member, is directly locked and the cassette is locked through it, there are some gaps between the switch part and the lock part, unlike the conventional structure. Compared to a configuration in which connecting members are arranged, the interval between the switch input and the lock can be minimized. Therefore, timing accuracy can be extremely high, and as a result, no unnecessary operations occur.
It is possible to perform the loading operation smoothly.

In addition, the eject lock plate 7, which is a locking member, is not placed on the pack guide, but is placed in an empty space above the moving direction of the eject arm plate 3, which is a switch operation member, so that the space can be used effectively. This can contribute to reducing space and downsizing the mechanism.

Note that the present invention is not limited to the above-mentioned embodiments, and the shapes and configurations of the eject arm and the lock member can be freely selected.

G. Effects of the Invention As explained above, according to the present invention, by having a structure in which the eject arm is directly locked,
Improved timing accuracy between switch input and lock position, enabling smooth loading operation.
In addition, it is possible to provide a loading mechanism that is downsized by effectively utilizing space.

[Brief explanation of the drawing]

FIGS. 1A and 1B are a plan view and a side view showing an embodiment of the loading mechanism according to the present invention, and FIG. 1C is a
FIG. 2 is a plan view showing a state in which the eject arm presses the switch link 5, and FIG. 2 is a plan view showing a conventional loading mechanism. 1...Pack stopper, 2...Eject arm, 3...Eject arm plate, 5...
Switch link, 6...Switch, 7...Eject lock plate.

Claims (1)

[Scope of Claims] 1. An eject arm is provided which drives a pack stopper in conjunction with a drive motor and is released from the motor except when the power is turned on. After a cassette is inserted to a predetermined position, the eject arm Press the switch to turn on the power and rotate the motor, and the drive force of this motor pulls in and moves the pack stopper that interlocks with the cassette to perform the loading operation of the cassette. The retracting stroke of the pack stopper due to the insertion of the cassette corresponds to the movement stroke of the eject arm to the switch pressing position, and (b) a rotatable locking member is provided to lock the eject arm; The eject arm is provided with a locked part that is locked to the locking member, and the locking member is biased in the locking direction by a spring, and when the eject arm moves to the switch pressing position, the eject arm is switched. A loading mechanism characterized by being configured to lock in a pressed position.