JPS5925293B2 - cassette tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette loading device for a force setting type tape recorder, particularly a force setting type tape recorder for use in a vehicle, and an ejection device for removing the force set from the tape recorder main body when the power is cut off. .

Conventionally, in car-mounted force setting type tape recorders, even if the power is cut off during playback, the pinch roller presses against the capstan and remains sandwiched between the tapes, and this state continues as long as the eject lever is not pressed. This has the disadvantage that it causes deformation of the rubber, resulting in poor wow and flutter.

In addition, in a unidirectional feed car cassette tape recorder, by placing the pinch roller and magnetic head on the force set holder and lowering the force set, the pinch roller and magnetic head are gradually brought closer to the force set, until the force set is completely lowered. If the pinch roller is then crimped onto the capstan, attach the stopper to the force set holder,
When this is connected to an electromagnetic magnet and the power is turned off, the attractive force of the electromagnetic magnet is lost and the stopper comes off, causing the force set to separate from the main body of the tape recorder. However, considering that there is a tendency for modern automobiles to be equipped with so-called in-dash systems that are built into the dash board in order to ensure safety inside the vehicle, the size of the parts that protrude from the dash board into the interior of the car (so-called nozzles) is limited. Due to size constraints, although it is possible to feed in one direction, it is impossible to use a reciprocating method. The present invention has been made to eliminate the above-mentioned drawbacks and provides an auto-eject device which can also be used with an induction type reciprocating device.

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a plan view of the main parts of the apparatus of the present invention in the stopped state, FIG. 2 is a right side view of the same as in FIG. 1, FIG. 3 is a plan view of the main parts in the reproducing state, and FIG. FIG. 5 is a plan view of the main part in the ejected state.

1,1 is the capstan, 2,2 is the flywheel, 3,
3 is a reel stand.

Reference numeral 4 denotes a sub-chassis to which a magnetic head and a pinch roller (not shown) are attached, regulating the movement of the sub-chassis 4 and allowing a stopper roller 5 fixed to the sub-chassis 4 to rotate about a shaft 5-1. It's summery.

The sub-chassis 4 is always subjected to force in the direction of arrow A in FIG.
1, and the pins 10, 10 are in pressure contact with the sub-chassis 4. Reference numeral 13 is a lever for the plunger magnet, which can be rotated around a fulcrum 14 with a spring 15.
When the plunger magnet 12 is not energized, it is in the state shown by the solid line in Figure 1, and when it is energized, it is in the state shown by the dotted line, and the lock lever 16
It engages with the claw 16-1 of.

The lock lever 16 is a fulcrum 17 attached to the main chassis.
The abutment pin 18 and the abutment 16-2 are attached to the lock lever 16, and are always subjected to a clockwise force by a spring 19. Reference numeral 20 is a toggle lever which can swing around a fulcrum 21. A link 22 is connected to the toggle lever 20 by a pin 23, and the link 22 is connected to a connecting lever 25 by a pin 24 to form a toggle mechanism.

The connecting lever 25 can be rotated around a fulcrum 26 and is rotatably connected to an eject lever 28 by a pin 27 on the connecting lever 25, and a pin 29 is fixed to the eject lever 28, which is connected to the sub-chassis tension levers 8, 9.
inserted into both long holes. 30 is fixed to the force set holder lever 31 with a force set holder lever pin, and the force set holder lever 31 and the force set holder lever 33 are connected to the link 34 and the force set holder 37 (second
), and the link 34 has a return lever 32.
is fixed and the return lever 32 and lock lever 16 touch 1
6-2 is in contact.

Reference numeral 35 is a sub-shear system stopper lever which swings around a fulcrum 38 attached to the main chassis, and a pin 36 fixed to this is connected to a notch in the force set holder lever 33, so that the stopper roller 5 This lever's long hole 6
is combined with

The force set holder lever 31 receives a force from the spring 39 (FIG. 2) in the direction of arrow B, that is, counterclockwise, and tends to lift the force set holder 37 upward. Next, the actual operation will be explained.

First, the case where the plunger magnet 12 is energized will be explained.

In this case, the plunger magnet lever 13 is in the state shown by the dotted line in FIG.
-1 is engaged with the lever hole 3-1, and the lock lever 16 remains in the state shown in FIG. In other words, hit pin 1
8 is stationary at a position 28-1 where it hits the eject lever 28. Now, put the force set in the force set holder 37 and push it down as shown in Fig. 4.The force set holder lever 3
1 and 33 rotate clockwise, and a toggle lever 20 and a sub shear system stopper lever 35 are engaged with these.
rotate clockwise at the same time. Then, the connecting lever 25 connected to the toggle lever 20 moves to the shaft 2.
The eject lever 28, which is rotated counterclockwise with the eject lever 28 as a fulcrum and coupled thereto, is integrated with the connecting lever 25 because the lever abutting portion 28-1 is restrained by the abutment pin 18, and the eject lever 28 is rotated counterclockwise around the eject lever 28 as a fulcrum. also moves counterclockwise around the fulcrum 26, and the sub-chassis tension lever 8 connected thereto is moved counterclockwise by the pin 29.
At the same time, the subchassis tension lever 9 is rotated clockwise to pull the springs 11, 11 attached to the pins 10, 10 at the tip of each lever. However, if the force set holder levers 31 and 33 do not completely rotate to the predetermined position, the shallow notch 6-1 of the elongated hole 6 of the sub-shear system stopper lever 35
The stopper roller 5 of the sub-chassis 4 is restrained, and the sub-chassis 4 does not move in the same direction even when the spring 11 is pulled, and the deep notch 6-2 of the elongated hole of the sub-chassis stopper lever 35 4, the stopper roller 5 of the sub-chassis 4 reaches a position where it can enter the deep notch 6-2 of the sub-chassis stopper lever 35, and at the same time the lock lever 16 is released from the return lever 32. Since the link 34 is engaged with the hole 13-1 of the plunger lever 13, it does not rotate due to the spring 19. When the link 34 is moved, that is, the force set is inserted, the connecting lever 25 is rotated clockwise by the toggle lever 20, and the eject lever 28 is rotated in the opposite direction. To rotate clockwise, the tension levers 8 and 9 are rotated by the pin 29 around the shafts 8-1 and 8-2, and in order to release the sub-chassis 4 from the pins 10 and 10, the sub-chassis 4 is moved by the spring 11, and the pinch roller is rotated. It is crimped onto the capstan 1, and the head is inserted into the force set to be in the playback state. By this time, the force set has already completely descended to its normal position. A plan view of this state is shown in FIG. 3, and a side view is shown in FIG. 4. Furthermore, the deep notch 6-2 of the notch 6 is the force set holder lever 33.
It also serves as a locking mechanism. To explain the case where the power is turned off using FIG. 3 showing this state and FIG. 1, the lock lever 16 is no longer restrained, and the lock lever 16 is tensioned by the spring 19 and rotates clockwise about the shaft 17 as a fulcrum, thereby causing the contact pin 18 to separate from the contact portion 28-1 of the eject lever 28. , the restraint of the lever 28 is released, and the springs 11, 11 acting on the pin 29 on the lever 28 are released.
By the force of the springs 7, 7, and a pinch roller spring (not shown), the retractor lever 28 rotates clockwise, and at the same time, the sub-chassis 4 also retracts. This state is the state shown in FIG. At this point, the stop roller 5 of the sub chassis 4 is separated from the deep notch 6-2 of the sub chassis stop lever 35 due to the retreat of the sub chassis 4, so the restraint of the sub chassis stop lever 35 is released, and the counterclockwise direction, i.e. Rotation in the shallow notch 6-1 direction becomes free. Then pin 3 of sub shear system lever 135
The force set holder lever 33 connected to the spring 3
At the same time, the sub-shear stopper lever 35 also rotates counter-clockwise within the shallow notch 6-1 of the sub-shear 4 using the roller 5 on the sub-shear 4 as a guide. By rotating the force set holder levers 33, 31 counterclockwise, the force set holder 37 is raised, changing from the state shown in FIG. 4 to the state shown in FIG. 2, whereby the force is set (re-set). Lever 3
A return lever 32 is fixed to a link 34 that is connected to the links 3 and 31 by rotating them counterclockwise.
The lock lever 16 is then rotated counterclockwise about the shaft 17 and returns to the state shown in FIG. Next, with the plunger magnet 12 de-energized, press the force set holder 3.
The case where 7 is lowered will be explained.

At this time, the magnet lever 13 and lock lever 16 are not engaged, so the toggle lever 20, sub-shear system stopper lever 35, etc. cassette holder lever 31
, 33 is the plunger magnet 12.
The lock lever 16 moves clockwise as the return lever 32 moves, and the contact portion 2 of the pin 18 and the eject lever 28 moves in the same manner as when energized.
No more contact with 8-1.

However, in this state, the pin 27, which is the shaft of the eject lever 28, is moving counterclockwise with respect to the shaft 26, so the eject lever 28 is moved to either the side where the pin 29 is located or the side 28-1 where the contact portion is located. You'll have to move. At this time, since the force of the spring 7 is acting on the pin 29 via the connection lever or the like, the contact portion 28-1 rotates clockwise. At this time, the state shown in FIG. 5 is reached. Therefore, when the force to press the force set holder 37 is removed, the stopper roller 15 of the sub-chassis 4 has not entered the deep notch 6-2 of the sub-chassis stopper lever 135, so the force set holder 37 is removed as described above. As it rises, the force set is ejected and returns to its original state. As detailed above, the present invention provides a force set type tape recorder in which the force set holder can be moved up and down to move the force set between an operating position and a non-operating position. A sub-chassis regulation lever that rotates in conjunction with a holder that moves up and down in relation to it, and a pin that engages with a different notch provided in the lever are provided on the sub-chassis, and this pin simply moves within the notch of the sub-chassis regulation lever. Since the holder can be locked and released, and the force can be set and discharged, the structure is extremely simple and is particularly suitable for induction type reciprocating devices.

[Brief explanation of drawings]

FIG. 1 is a plan view of essential parts of a force-setting tape recorder according to the present invention, FIG. 2 is a right side view of the same force-setting tape recorder, and FIG. 3 is a plan view of the same force-setting tape recorder in a playing state. Figure 4 is the right side view of Figure 3 above.
FIG. 5 is a plan view of the force-set type tape recorder in the ejected state. 4...Sub chassis, 8...Sub chassis tension lever, 9...Sub chassis tension lever, 12...Plunger magnet, 1
3... Lever for magnet, 16...
Lock lever one, 18... Hit pin, 20...
...Toggle lever 1, 25...Connection lever, 2
8... Eject lever, 31... Force set holder lever, 32... Return lever,
33... Force set holder lever, 35...
...Subshear system top lever 1, 37...
・Power set holder.

Claims (1)

[Claims] 1. A holder that removably supports a cassette and can be moved between a non-operating position and an operating position by moving up and down using an elevating means, and a sub-chassis on which a magnetic head is placed and that can be moved back and forth. The sub-chassis is moved forward against a return spring to insert the magnetic head into the cassette and enter the playback state, wherein the first cut is substantially orthogonal to the moving direction of the sub-chassis. a sub-chassis stopper lever having a notch and a second notch communicating with the first notch along the moving direction of the sub-chassis and rotating in accordance with the vertical movement of the holder; a stopper roller provided on the sub-chassis to engage with the first notch when the holder is raised; and a stopper roller that is rotated according to the vertical movement of the holder. a sub-chassis tension lever, which is rotatably supported and has one end connected to the sub-chassis via a spring and moves the sub-chassis forward against a return spring as the holder is lowered; an eject lever rotatably coupled to the other end of the subchassis pull lever and having a lever contact portion at the other end; having an engaging part at the other end;
The lock lever is normally applied with a rotational force by a second spring in a direction in which the abutting portion is separated from the abutting portion of the eject lever, and the plunger is operated in conjunction with the plunger when the plunger is energized. and a magnet lever that engages with the engaging portion of the lock lever and moves the lock lever against the second spring to a position where the abutting portion abuts the lever abutting portion of the eject lever. When the holder is lowered while the plunger is energized, the accompanying rotation of the subchassis stopper lever moves the stopper roller from the first notch to the second notch, and the stopper roller moves from the first notch to the second notch. Rotation of the subchassis tension lever moves the subchassis forward via the first spring against the return spring, resulting in a regeneration state. In this regeneration state, the energization to the plunger is released and the magnet lever is moved forward. When the lock lever is disengaged from the lock lever and the eject lever is disengaged from the abutting portion of the lock lever, the subchassis is moved backward by the return force of the return spring, and the stopper roller is moved back to the first cutoff position. A cassette type tape recorder in which the holder mentioned above can be raised to accommodate the chipping.