JPS5990254A - Locking mechanism of pack stopper - Google Patents

Abstract

PURPOSE:To prevent unexpected ejecting operation by providing a release arm which turns on a power source or unlocks an intermittent gear with a locking part which inhibits a pack stopper which has reached a tape player inner part from returning to a front side. CONSTITUTION:A pack guide 1 is provided with the pack stopper 3 which is slidable in the insertion direction of a cassette and the release arm 8 which moves to the inner side of the tape player by being pressed with the pack stopper 3 is arranged by the movement path of the stopper 3. A pressed part 8a which engages the pack stopper 3 is formed at the front-side end part of the release arm 8 and a knife-edge type escape part 8b and a lock part 8c which engages the pack stopper 3 during the rotation of the release arm 8 to the inner side are provided at the inner-side end part.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a tape player in which a cassette, such as a compact cassette tape or a micro cassette, is mounted inside the tape player using the driving force of a motor. be.

[Technical Background of the Invention] Autoloading devices that automatically load and eject a cassette into a tape player using the driving force of a motor have been widely proposed.

One type of autoloading device is known that uses the driving force of a motor only to load the cassette, and uses the repulsive force of a spring stored during loading to eject the cassette.

This autoloading device moves a power plate by the operation of a cam that is driven by a motor and rotates intermittently, and the power plate operates a cassette loading mechanism. That is, in this type of tape player, the intermittent gear is always locked away from the motor, regardless of whether the motor is rotating or stopped. Then, when you slightly insert the case h into the pack guide by hand, the back stopper installed in the pack guide moves, presses the power on switch, starts the motor rotation, and at the same time locks the intermittent gear. Release it, connect the motor and intermittent gear,
Start the intermittent gear rotation. As a result, the intermittent gear drives the power plate, which activates the autoloading mechanism, which pulls the cassette together with the backstop deep into the pack guide, and then lowers the entire pack guide onto the reel base. The cassette is loaded. When the attachment of the cassette to the reel base is completed, the intermittent gear is also locked at the initial stop position, disconnected from the motor, and stopped.

Here, the pack guide is provided with a spring that presses the back stopper to the outside of the tape player, and a spring is provided between the tape player and the pack guide that acts to move the pack guide upward and downward from above the reel base. are provided, and during loading, these springs are energized by the driving force of the motor.

On the other hand, when ejecting, the end of the tape is detected by stopping the rotation of the reel base, and by pressing the eject operation lever, the spring reel that has been stored at the time of installation is unlocked, and the force is used to release the tape. is lifted from above the reel base, and then pushed out from inside the pack guide to the outside of the tape player.

[Problem 1 in the background art 1 As described above, in the conventional autoloading mechanism using an intermittent gear, when inserting a cassette, ■ turning on the power switch, ■ unlocking the intermittent gear, and ■ power play 1~
The operations ① to ② are essential: ① driving the loading gH4;

Therefore, in the conventional apparatus, it takes some waiting time from the time when the power switch is turned on with the insertion of the cassette until the time when mate loading starts. Therefore, it is necessary to hold the cassette by hand during the waiting time after insertion of the cassette until the start of auto-loading, which poses a problem of poor operability. This is because if you release the action of manually pushing the cassette into the pack guide during the waiting time, the backstopper will be pushed forward by the force of the eject spring! This is because, in a car-mounted device, the cassette is ejected from the tape player due to vibrations applied to the tape player.

[Object of the Invention] The present invention was proposed in order to overcome the drawbacks of the conventional autoloading device as mentioned above. After inserting the cassette by pushing it in from the front side, wait until the predetermined autoloading operation starts, and then press the cassette until it is inserted. To provide a locking mechanism for a back stopper which can keep a cassette together with a back stopper in a pack guide even when the cassette is erased and prevents an inadvertent ejecting operation.

Summary of the Invention 1 The locking mechanism of the back stopper of the present invention is such that when the back stopper moves to the back of the tape player, it rotates by being pressed by the Pax 1 collar, and when the power is turned on or Release arm for unlocking the gear.
At the back of the tape player (a locking part is provided to prevent the backstopper from returning to the front side), and this locking part locks the backstopper only when a cassette is installed. This prevents the cassette from flying out and allows the cassette to be ejected without locking the back stopper.

[Embodiments of the Invention] Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings.

(1) Configuration■ The pack guide 1 for holding the force hit inside the backstopper tape player is used for setting the %r surface and the no. It is a box-shaped member with an open bottom. This back guide 1
A guide groove 2 extending in the front-rear direction of the tape player is formed in the center of the upper surface of the tape player. Inside this guide groove 2,
Pax 1 to Tsuno ＼-3 are fitted in such a way that they can slide freely.

This Pax collar is always urged toward the front side of the back guide by an ejection spring (not shown). The rear end portion of the back stopper 3 projects vertically into the back kite 1, and this vertical projection serves as an abutting portion 4 with the tip of a cassette inserted into the back guide 1. On the other hand, at the front end of the back stopper 3, there is a cover 1- inserted into the pack guide 1.
A claw portion 5 is formed to engage with the reel shaft insertion hole.

A release arm suppressing member 6 is integrally formed on the side edge of the back stopper 3.

This suppressing member 6 reciprocates within the guide groove 2 together with the back stopper 3, and is located on the inner side (installation side) of the suppressing member 6.
As shown in the enlarged view of FIG. 4, the end of the pressing member 6 is a vertical pressing part 6a. Naifetsuji-shaped relief part 6b facing ,,! : It has become.

■ Support frame 7 that overhangs the upper surface of release arm back guide 1
A release arm 8 is rotatably attached around a support shaft 9. A spring 10 is stretched between the release arm 8 and the support frame 7, and the release arm 8 is always biased clockwise.

This release arm 8 is connected to release plays i to 12 at a portion of a bottle-shaped projection 11 provided integrally therewith. 12 to this release play 1 is tape play = A7
It is supported so as to be movable in the front and back direction with respect to the frame, and the stopper 14 of the intermittent gear 13 is disposed on the opposite side (front end) of the east connection part (to the release arm 8). A protruding piece 15 is provided for pressing in the direction J-.

The intermittent gear 13 is provided with four parts 16 around which the stopper 14 is engaged, and the tip of the stopper 14 is engaged with the four parts 16. Also, the stopper 14 is connected to the support shaft 17.
A release plate 12 is mounted on the opposite side of the part that engaged with the recess 16 of the intermittent gear 13.
A contact portion 18 of the protruding piece 15 is provided. Furthermore, a pressing piece 14a is provided that presses the power switch SW when the stopper 14 (hereinafter referred to as the stopper 14) is removed from the recess 16.

Now, the tip of the release arm 8 is an elongated plate-like member extending in the direction of movement of the pressing member 6, and the front end thereof is
d5 at a certain angle with respect to the moving direction of the suppressing member 6.
As shown in the cross-sectional view of Fig. 4, the vertically steep suppressed portion 8
It is a. On the other hand, the end of the release arm 8 opposite to the pressed part 8''a, that is, the end thereof, is a knife-shaped escape part 8b with a downwardly tapered surface. A notch in the shape of a letter is formed on the side surface on the back stopper side, and the front edge of this notch stands out to form a locking portion 8C of the back stopper.

(2) Function The function of the backstopper locking mechanism of this embodiment having the above-mentioned configuration is as follows.

■ During operation...Figures 1 and 4 When the cover 1 inserted into the pack guide 1 hits the abutment part 4 at the back of the back stopper 3, the back stopper 3 will respond to the pushing force of the cover 1-. This causes it to start moving toward the back of the tape player along the guide groove 2 against the force of the spring that presses it toward the front. Then, the suppression member 6 integrally formed with the back stopper 3
will move toward the operation side, but when the pressing part 6a of this pressing member 6 comes into contact with the pressed part 8a of the release arm 8 on its trajectory, both of them become vertically vertical. Because of their shape, they engage with each other.

As a result, the release arm 8 is pressed by the pressing member 6 and rotates counterclockwise about the support shaft 9 against the force of the spring 10.

Therefore, the release plate 12 that is engaged with the release arm 8 at the protrusion 11 moves toward the front side of the tape breaker, and the protrusion piece 15 at the front end of the release plate 12 engages with the release arm 8 at the stopper 1.
Press the contact portion 18 of No. 4.

As a result, the stopper 14 rotates counterclockwise in the S1 direction about the support shaft 17, whereby the tip of the stopper 14 comes off from the four parts 16, and the intermittent gear 13 becomes able to rotate freely. At the same time, the power switch SW is pressed by the switch pressing piece 14a formed on the stopper 14, and the power is turned on to the motor.

As a result, the driving force on the motor side is transmitted to this intermittent gear, the intermittent gear and the driven power plate are driven, and the drive mechanism interlocking with this power plate causes the pack stopper 3 to move the cassette to the back of the pack guide. is pulled in, and then the pack guide 1 is lowered onto the reel base, completing loading of the cassette.

■ Locking operation of the back stopper...The back stopper 3, which was pushed into the back of the pack guide 1 when inserting the cassette shown in (■) in Fig. 2, is always pushed toward the front by a spring (not shown). If you release your hand from the cassette before the drive mechanism operates and starts retracting the back stopper 3, the back stopper 3 will move toward you due to the action of the spring. However, in this embodiment, since the notch-shaped locking portion 8C is formed in a part of the inner corner of the release arm 8, the back stopper 3 that passes through the side edge while pressing the release arm 8 But after the hand is released, it begins to move toward you due to the force of the spring, and the pressing member 6
comes into contact with the locking portion 8C. Here, the front side of the pressing member 6 has a knife-shaped escape part 6b, but since the locking part 8C that this comes into contact with is vertically steep, the two are engaged without coming apart, and the back stopper 3 movement is prevented. Therefore, until the drive mechanism operates and starts retracting the back stopper 3, the back stopper 3 is locked by the release arm 8, and the cassette is prevented from jumping out.

■ When ejecting...Figures 3 and 5 When the cassette being played reaches the end of the tape, or when the eject lever of the tape player or tape player is pressed, the locking mechanism that has been holding the pack guide 1 in the lowered position will release. The pack guide 1 rises from above the reel base due to the action of the spring that was released and stored when it was installed, and the cassette in the pack guide 1 is moved to the back stopper 3, which was suppressed by the spring installed in the pack guide. As it moves toward the front, it is pushed out from inside the pack guide 1.

Here, when the back stopper 3 moves toward the front along the guide groove 2, the pressing member 6 crosses the release arm 8. However, on the inner side of the pressing member 6,
There is a knife-shaped relief part 6b with a part of the taper facing upward, and the front side of the release arm 8 also has a knife-shaped relief part 8b with a part of the taper facing downward. Since the member 6 passes under the release arm 8, the two do not engage each other. Therefore, despite the movement of the pressing member 6, the release arm 8 does not rotate about the support shaft 9. In this way, during the cassette eject operation, even if the suppressing member 6 and the release arm 8 intersect, the release arm 8 does not move the release plate 12, so the stopper 14 of the intermittent gear 13 is released. This eliminates the inconvenience that the power plate is driven and the cullet is drawn into the pack guide again without the power being turned on.

[Other Embodiments J5] The present invention is not limited to J5, and instead of attaching the release arm 8 to the support shaft 9 so as to be rotatable, the release arm 8 may also be attached in the same direction as the pressing member 6 or in a right angle direction. It can also be provided slidably.

Also, the direction of the taper part of the knife-shaped relief part is
Contrary to the illustration, with the pressing member 6 side facing downward, press the pressing member 6.
It is also possible to pass above the release arm 8.

[Effects of the Invention] As described in F below, according to the present invention, a locking portion of the back stopper is provided in the inner part of the release arm, and a suppressing portion and a knife-shaped relief are provided at the ends of the back stopper and the release arm. With the simple configuration of setting up the back stopper and the release arm, it is possible to lock the back stopper with the release arm only when the cassette is installed, making it possible to provide a tape player that eliminates the waiting time until the start of auto-loading. .

[Brief explanation of the drawing]

1 to 3 are plan views showing one embodiment of the one-way operation mechanism of the present invention, in which FIG. 1 is when the cullet is inserted, FIG. 2 is when waiting for loading, and FIG. 3 is when it is ejected. shows. 4 and 5 are cross-sectional views of the pressing member and the release arm in the embodiment, with FIG. 4 showing the state at the time of insertion and FIG. 5 showing the state at the time of ejection. DESCRIPTION OF SYMBOLS 1... Pack guide, 2... Guide groove, 3... Back stopper, 4... Contact part, 5... Claw part, 6...
...pressing member, 6a...pressing part, 6b...relief part,
7... Support frame, 8... Release arm, 8a
...Pressed part, 8b...Escape part, 8G...Locking part, 9...Spindle, 10...Spring, 11...Protrusion, 12...Release plate 1 note, 13...intermittent gear,
14... Stopper, 14a... Switch pressing piece,
15... Projection piece, 16... Recessed part, 17... Support shaft, 1
8...Contact part, SW...Power switch. Figure 3 Figure 4

Claims (2)

[Claims] (1) A back stopper that can be slid freely along the cassette insertion direction is provided on the pack guide, and a release is placed on the side of the movement path of the back stopper to move toward the back of the tape player when pressed by the back stopper. An arm is arranged, and the front end of the release arm has a pressed part that engages with the back stopper, and the rear end has a knife-shaped escape part and a rear end of the release arm. A locking mechanism for a backstopper, comprising a locking portion that engages with the backstopper during rotation. (2) The locking mechanism for a back stopper according to claim 1, wherein the back stopper has a knife-shaped escape part at its front end and a pressing part at its rear end.