JPS59124061A - Pack guide mechanism of tape player - Google Patents

Abstract

PURPOSE:To press securely a pack guide to a descent position and to operate it lightly during ejection by extending a coil spring to an L-shaped link atop of a guide arm, and inverting the load on the spring. CONSTITUTION:When the pack gude is moved down, the L-shaped link 4 engages the pin 3 of a guide arm to extend a coil spring 11 between a spring fitting part 10 and an abutting part 8, and the position of the abutting part 8 is set on the right-hand side of the line l connecting the fitting part 10 and a supporting shaft 6. Therefore, when the link 4 rotates clockwise by a spring 15 during the loading of a cassette, the spring 11 is in front of the line l to draw the link 4 clockwise, holding the pack guide securely at the descent position. Further, when the abutting part 8 goes beyond the line l during ejection, the spring 11 draws the link 4 upward, so the elevation of the pack guide is performed smoothly to realize light operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a back kite mechanism for loading a cassette into a playback position and taking it out of a cassette type tape player.

[Technical Background of the Invention] A cassette-type tape player is brought into play mode for playback, recording, etc. by inserting the two reel shafts that stand upright on the cassette into the shaft holes of the cassette. Various types of cassette mounting means are known, depending on the direction in which the cassette is inserted into the tape player. One of them is to insert the cassette horizontally into the back kite from the insertion opening that is open on the entire surface of the tape brake, then lower the entire back kite onto the reel base, and insert the reel shaft into the cassette. There is a so-called horizontal loading type.

[Problems with the Background Art] By the way, in this type of tape player, the back guide must be placed firmly in the lowered position to prevent the cassette from accidentally rising or rattling off the reel base while playing the tape. It is necessary to hold it in place.

For this reason, the puncture guide is provided with a spring that moves downward, but if the force of this spring is strong, it will be difficult to raise the pack guide when ejecting the pack. That is, since the pack guide is raised against the force of a strong spring, the pushing force of the eject lever becomes large, resulting in poor operability. Moreover, the spring that holds down the pack guide is often also used as the return spring for the eject lever, so when operating the eject, it is necessary to push the lever against both the return force of the lever and the holding force of the pack guide. The indentation resistance reached a considerable amount of force.

In addition, in the ejected state, the spring for lowering the pack guide is fully extended, and the pack guide must be held in the raised position against its strong force. A device with a large locking force is required to lock the cullet, and a large force is also required to release the lock, which impairs the operability when installing the cullet. In this case, if a mechanism with a small locking force and easy release is adopted in order to facilitate unlocking, there is a risk that the lock will come off due to external vibrations, shocks, etc., and the pack guide will become unstable in holding.

[Object of the Invention] The present invention has been proposed in response to the problems of the prior art as described above.The purpose of the present invention is to maintain a sufficient force for holding the pack guide in the lowered position, while at the same time providing sufficient force to hold the pack guide in the lower position. To provide a pack guide mechanism which requires light operating force and can stably hold a pack kite from 1st to 1st adjustment.

[Summary of the Invention] The pack guide mechanism of the present invention connects an L-shaped link that moves in a fan shape to a guide arm that raises and lowers a pack guide, and is provided with a L-shaped link that moves in a fan shape to a guide arm that raises and lowers a pack guide. A coil spring for holding down the pack guide is stretched between the frame of A2, and in particular, the mounting part of this coil spring is placed outside of the spindle, which is the center of rotation of the L-shaped link, and the L-shaped link is in contact with it. By setting and covering the pack guide on the opposite side, the load direction of the coil spring is reversed during the rotation of the L-shaped link, and the ul- coil springs act to hold the pack guide in the lowered position and hold it in the ejected state. This aims to reduce the operating force of the eject lever and the locking force at the time of ejecting.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In this embodiment', the guide arm 1 for raising and lowering the pack guide has its tip movable up and down about a support shaft 2 at the rear thereof. An L-shaped link 4 that moves in a sector-like manner via a bin 3 is linked to the tip of the guide arm 1.

The L-shaped link 4 has an inverted shape as a whole, and has a U-shaped recess 5 that holds the bottle 3 at the tip of the arm on the guide arm side, and a support shaft 6 at the center of a part of the corner. It is rotatably attached to the frame 7 via. Also, L
A bottle-shaped abutting portion 8 for the eject lever is fixed to the end of the arm extending downward of the letter-shaped link 4, and this abutting portion 8 passes through an opening 9 provided in the frame 7 to the inside of the frame. protrudes to.

On the other hand, in the frame 7, the opening 9 has a shape that allows the abutment part 8 to move in a fan shape, and is located at the lower right of the front of the frame. Additionally, an L-shaped link 4 is provided at the top of the frame 7.
A spring mounting portion 10 is located on the opposite side of the contact portion 28 across the support shaft 6 of the
is provided, and a coil spring 11 is stretched between this and the contact portion 8 protruding from the opening 9. Here, the rotation range of the 1-shaped link 4 is located at the back of the deep bra A than the line connecting the abutting part 8 or the mounting part 10 and the support shaft 6 when the cassette is ejected, and when the cullet is installed. In this case, the contact portion 8 is positioned so as to cover the kneading portion in front of the kneading portion.

Three guide bins 12 are fixed to the front side of the frame, and an eject lever 13 is attached via these so as to be movable back and forth. The eject lever 13 is
It is a long strip-shaped plate, and three elongated holes 14 into which kite bins 12 of the frame are inserted are formed laterally in the center. This eject lever 13 is always urged toward the front side of the tape player by a return spring 15. In addition, a protruding pressing part 16 is provided at the lower end of the eject lever 13, and a protruding locking part 17, which is the same as the suppressing part 16, is provided on the distal end side.
is formed.

The operation of this embodiment having such a configuration is as follows.

As shown in Figure 1, when a cassette tape is loaded, the locking mechanism that holds the back guide in the raised position is released, so the pack guide and the guide arm 1 that supports it are in a free state. .

Therefore, the guide arm 1 is lowered by the eject lever that acts via the L-shaped link 4 connected thereto.

That is, when the eject lever 13 is pulled forward by the spring 15, the locking part 17 at the tip of the eject lever 13 pulls the contact part 8 of the L-shaped link 4 toward the front, so that the L-shaped link 4 is attached to the support shaft 6. As the guide arm rotates clockwise around the center, the concave portion 5 at the upper end of the L-shaped link descends, and the tip of the guide arm also descends.

At this time, the coil spring 11 rotates clockwise together with the contact part, but since the mounting part 10h, which is the center of rotation, is set outside the center of rotation of the L-shaped link, the mounting part 10 and the support shaft 6 of the L-shaped link, the load direction is reversed. Therefore, when the cassette 1 is installed, the coil spring 11 is tilted toward the front of the wire,
A pulling force acts on the L-shaped link in the n direction. Due to this tensile force, the wedge-shaped link is held in a state in which the recessed portion at the upper end thereof is lowered, and the pack guide is accordingly held in the lowered position.

On the other hand, when operating the ink lever 13 as shown in FIG.
, the contact part 8 moves between the arcuate parts formed on the frame 7 of the Tape Play AI [1 part 9], and the L-shaped link 4 moves around the spindle 6. As it rotates, the four parts 5 move upward and the pin 3 rises, and the guide arm 1 and pack guide are also pulled upward and raised.

At this time, until the contact part 8 crosses the wire, the coil spring 1
1 is stretched and acts as a resistance against the pushing force of the eject lever 13.

Subsequently, when the eject lever 13 is pushed in to the innermost part of the tape player, the state as shown in FIG. 3 is obtained. That is, the abutting part 8 is pushed by the suppressing part 16 formed at the tip of the eject lever 13 and reaches the innermost part of the arc-shaped opening 9, and at this time, the contact part 8 is pushed into the recessed part 5 of the L-shaped link 4. :The guide bin 3 is also pushed up to the highest position 4, and the guide arm 1 rotates around the support shaft 2 and is fixed in a horizontal position. On this occasion,
The force of the coil spring 11 is applied to the pin 3 from the time when the abutment part 8 is located further back than the line length connecting the support shaft 6 of the link and the attachment part 10.
This acts as a force pushing upward, making the sword arm 1 and the pack guide rise more smoothly.

Note that when the guide arm and the pack guide are completely raised, they are held in the raised position by a locking mechanism (not shown) and enter the ejected state.

When the pushing force on the eject lever 13 is released, the eject lever 13 moves toward you by the force of the spring 15, but the guide arm 1 and the L-shaped link 4 interlocked with it are fixed by the lock mechanism. Therefore, the locking part 17 stops at the position where it touches the contact part 8, that is, at the position where it is pulled out almost halfway. When the locking mechanism is released as the cassette is inserted into the back guide, the guide arm L-shaped link becomes free, and the eject lever 13 is further pulled out to the front by the spring 15, and at the same time, the L-shaped link and guide The arm also rotates to be in the attached state as shown in FIG.

[Effects of the Invention] As described above, according to the present invention, by reversing the load of the coil spring attached to the L-shaped link, one coil spring is used to create the force that presses the puncture guide in the lowered position and maintains it in the ejected state. Since a sufficient force can be applied to the pack guide, it is possible to securely hold the pack guide while reducing locking in the ejected state. Moreover, if you push the eject lever and raise the back guide,
Initially, the force of the coil spring acts as resistance, but after the reversal, the coil spring acts in the opposite direction, as if retracting the eject lever, so even though the return spring of the eject lever stretches and resistance increases, the overall pushing force is reduced. As you can see, there is almost no increase in resistance, and the effect is that the 1' diagonal lever can be operated with light force.

[Brief explanation of the drawing]

FIG. 1 is a side view when the cassette is installed, FIG. 2 is a side view when the cassette is removed, and FIG. 3 is a side view after the cassette is removed. 1...Guide arm, 2...Guide arm support shaft,
3... Bin, 4... L-shaped link, 5... Recessed part,
6... Support shaft of L-shaped link, 7... Frame, 8...
...Abutment part, 9...Opening part, 10...Mounting part, 11
...Coil spring. 12... Guide bin, 13...
Eject lever, 14... Long hole, 15... Spring, 16... Pressing part, 17... Locking part. Children's drawing 11

Claims (1)

[Claims] An L-shaped link having two arms extending to the eject arm side and the back guide side is rotatably attached to the frame of the tape player around a central support shaft, and the tip of one arm of the L-shaped link is provided with an abutting portion, a pressing portion for pressing the abutting portion is provided at the distal end of the eject plate, the distal end of the other arm of the L-shaped link is connected to the pack guide side, and A spring mounting part is provided on the opposite side of the abutting part across the spindle of the square-shaped link.
A coil spring is stretched between the spring mounting part and the abutting part of the L-shaped link, and the rotation range of the L-shaped link is brought into contact beyond the line connecting the spring mounting part and the support shaft of the L-shaped link. A back guide mechanism characterized by being set so that the parts move.