JPS6037542B2 - cassette tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette tape recorder suitable for use in vehicle battles.

In cassette tape recorders for vehicle battles, the cassette is generally inserted into and removed from a cassette holder and moved from an upper non-playing position to a lower playing position, and various methods have been proposed for this purpose. It has been implemented.

For example, a spring is installed to bring the cassette holder to a non-playing position, energy is stored in the spring when the cassette is inserted, it is held during play, and the stored energy is used to release the hold when the cassette is activated. There is a method of automatically ejecting the cassette, or conversely, a spring is installed to move the cassette holder to the performance position, and the cassette holder is locked in the non-performance position against the urging of the spring, and the lock is locked when the cassette is inserted. There is a method of automatically bringing the cassette to the playing position by releasing it. In the former case, the cassette can be ejected with a light operation, but the cassette loading operation is heavy, and in the latter, the cassette loading is easy, but the cassette ejection is heavy, and each has its advantages and disadvantages. Furthermore, in cars, the equipment is generally wired to be energized via the engine key switch and power switch, and if the engine key or power switch is turned off while playing, the motor will stop rotating, causing the pinch roller to shut off. The pinch roller is in pressure contact with the capstan, and if left in this state for a long time, the pinch roller becomes deformed and distorted, resulting in an increase in wow and flatness, which is undesirable.

Therefore, the present invention has been made in view of the above-mentioned conventional drawbacks.
By using the driving force of the tape drive motor to automatically move the cassette from the upper non-playing position where the cassette is inserted and removed to the lower playing position while accumulating energy in the spring, we aim to improve operability. , is equipped with a so-called power-off ejection mechanism that automatically returns the cassette from the playing position to the non-playing position using the accumulated spring energy if the power is cut off while the cassette is in the playing position. The present invention provides a cassette type tape recorder suitable for use in multiple vehicles, which is characterized by preventing damage to pinch rollers and the like.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a plan view of a cassette tape recorder according to the present invention.
is a U-shaped cassette holder that holds a cassette inserted in the vertical direction, and is rotatably supported on a support shaft 5 fixed between the front upright piece 3 and the rear upright piece 4 of the chassis 2.
It is biased clockwise by a spring (not shown), and is normally held in an upper non-playing position, and a roller member 7 is provided on the rear bending piece 6. Reference numeral 8 denotes a starting member which is also slidably supported by the support shaft 5, and is biased forward by a coil spring 9 stretched between it and the front upright piece 3 of the chassis 2, and when the cassette is inserted, the cassette A locking claw piece 10 is provided to protrude into the cassette holder 1 and engages with the reel hole of the cassette to prevent the cassette from flying out during ejection. is formed, and furthermore, a protrusion 1 passes through the slit opening 12 of the chassis 2 and protrudes downward from the chassis 2.
3 is formed.

Therefore, when the cassette is inserted, the activation member 8 is moved to the locking claw piece 1.
0 engages with the reel hole of the cassette, and at the same time, the insertion tip of the cassette engages with the engagement piece 11 and slides backward against the bias of the coil spring 9 (see FIG. 3). Reference numeral 14 designates a head board control member rotatably supported by the support shaft 5. A roller member 16 is provided on the rear bent piece 15 at a position adjacent to the roller member 7 of the cassette holder 1, and the chassis 2 A spring 18 is stretched between the downwardly extending front vertical piece 17 and the cut-and-raised piece 2' of the chassis 2, and is biased clockwise.

Reference numeral 19 denotes a head substrate on which a magnetic head 20, a pinch roller 21, etc. are mounted, chassis shafts 22, 22 are housed in elongated holes 23, 23, and the head substrate is mounted so as to be slidable left and right with respect to the chassis 2. As shown in FIG. 2, the right side of the center of the 19 is bent below the chassis 2, and its tip is in contact with the vertical piece 17 of the head board control member 14. A spring 24 stretched between
It is energized to the right by

Note that the biasing force of this spring 24 is set to be smaller than the biasing force of the spring 18 that biases the head board control member 14, so in the non-playing state, the head board 19 is not controlled by the head board control member. The magnetic head 20 and the pinch roller 21 are moved leftward by the biasing force of the spring 18 biasing the section 14, and the magnetic head 20 and the pinch roller 21 are away from the path along which the cassette moves up and down. Reference numeral 25 denotes a sliding member mounted so as to be able to slide left and right on the rear upright piece 4 of the chassis 2, which is biased leftward by a spring 26 and has a hook portion of the engaging piece 11 of the starting member 8 on its upper surface. A groove 27 is provided below which the roller members 7 and 1 provided on the cassette holder and the head board control member 14 are provided as shown in FIG.
6 is provided, and a rack gear 29 is formed at the lower end thereof, and is slidably driven in the right direction by engagement with a pinion gear 30 of a clutch device to be described later.

Reference numeral 31 denotes a holding lever constituting a holding device 32 that holds the sliding member 25 in the rightward movement position and holds the cassette holder in the lower performance position, as shown in FIG. abuts against a lower end portion 35 of a lateral movement member 25 that is rotatably supported downwardly by a shaft 33 and has a tapered side 34;
A chassis shaft 36 is housed in an elongated hole 37 and is rotatably connected to a slide lever 38 that can slide back and forth.

An adsorbing iron piece 40 that is adsorbed by an electromagnet 39 is fixed to the tip of the slide lever 38, and is biased forward by a spring 41. Reference numeral 42 denotes an eject lever, whose tip 43 faces the position where it engages with the slide lever 38, and has the effect of forcibly separating the iron piece 40 that is being attracted.

FIG. 4 is a diagram showing the drive mechanism below the chassis 2, in which the rotation of the motor 44 is controlled by the rubber belt and the idler wheel 46.
via the flywheel 47 and capstan 48
The rotation of the flywheel 47 is further transmitted to the reel shaft 50 via the transmission gear 49.

On the other hand, from the idler wheel 46, the reduction gears 51, 5
The driving force of the motor 44 is transmitted to the drive gear 54 via the gears 2 and 53. Reference numeral 55 denotes a rotary plate constituting a clutch mechanism 56, which is rotatably provided on a support plate 57 extending downward from the chassis 2, and is connected to an intermediate gear 58 provided coaxially with the pinion gear 30, and an intermediate gear 58 provided coaxially with the pinion gear 30. A connecting gear 59 that engages with the drive gear 58 and further engages with the drive gear 54 is layered thereon. Reference numerals 60 and 61 denote first and second activation levers, and the first activation lever 60 accommodates the chassis shaft 62 in a small hole 63 and is rotatably and slidably provided, and one end is bent upward to connect to the chassis entrance 64. It protrudes further above the chassis 2, and a notch 65 is formed in the center. On the other hand, the second activation lever 61 is formed into a substantially T-shape, is pivoted on the chassis shaft 62, is overlapped with the first activation lever 60, and has a downwardly bent piece 66 formed at one end like the first activation lever 60'. 66
The first actuating lever 60 is sandwiched therebetween and is configured to interlock with the first actuating lever 60. A protrusion 67 is provided at the other end, and is engaged with a hole 68 provided in the rotating plate 55. In the non-playing state, the first and second actuating levers 60 and 61 are in the state shown in FIG. 4 due to the spring 69 stretched between the first actuating lever 60 and the chassis 2. Next, the operation of the present invention having the following configuration will be explained.

First, in a non-playing state with no cassette inserted,
As shown in FIG. 1, the sliding member 25 is at the starting position where it is moved leftward by the force of the spring 26, and the roller members 7, 1 provided on the cassette holder l and the head board control member 14
6 is the position shown in FIG. 5, and the cassette holder 1 and the head board control member 14 are in the upper non-playing position as shown in FIG. 2 due to the clockwise biasing force.

Further, the activation member 8 is biased forward by a coil spring 9, the locking claw piece 10 is located inside the cassette holder, and the lower protrusion 13 is located in front of the slit entrance 12 of the chassis 2, as shown in FIG. It is located in Therefore, the first and second activation levers 60 and 61 are rotated clockwise by the spring 69, and the rotation plate 55 is rotated counterclockwise, so that the coupling gear 59 and drive gear 54 of the clutch device 56 are rotated clockwise.
are separated. Furthermore, the holding device 32 has a holding lever 3.
1 is engaged with the lower end 35 of the sliding member 25, the slide lever 38 is in a rearwardly slid position, and the adsorption iron piece 40 is separated from the electromagnet 39 (see Figs. 6 and 7). ). Next, a performance start operation in which a cassette is inserted in a non-performance state will be explained.

When the cassette is inserted into the holder from the vertical direction,
The side surface of the cassette presses the activation member 8, and the activation member 8 is slid rearward against the bias of the coil spring 9 to the position shown in FIG.

During this sliding process, the motor 4 (not shown)
4 is turned on, the motor 44 is driven, power is transmitted to the drive mechanism shown in FIG. 4, and the reel shaft 50 and drive gear 54 are driven. As the activation member 8 slides, the lower protrusion 13 moves rearward through the slit closure 12 of the chassis 2 and comes into contact with the first activation lever 60, thereby resisting the urging force of the sprocket IJ ring 69. The first activation lever 60 is rotated counterclockwise, and the linked second activation lever 61 is also rotated counterclockwise, so that the rotation plate 55 is rotated clockwise, and the connecting gear 59 is driven. It is engaged with the gear 54 (see FIG. 9). This drive gear 54
As a result, the pinion gear 30 is driven, and the sliding member 25 is gradually slid to the right against the urging force of the spring 26, so that the engaging piece 11 of the starting member 8 engages with the long groove of the sliding part village 25. 27
(See Figure 10). Therefore, even if the pressure on the cassette is released, the activation member 8 will not return to the front. Due to this rightward movement of the sliding member 25, the tapered stepped portion 28 first comes into contact with the roller member 7 provided on the cassette holder 1, and the roller member 7 is moved downward, thereby causing the cassette The holder 1 supports the support shaft 5 against the auxiliary force.
Then, the cassette is mounted on the reel shaft 50. Next, with the progress of sliding of the sliding member 25, the roller section 16 of the head board control member 14 is moved.
corresponds to the stepped portion 28, and in the same way, the head board control section village 1
4 is also rotated counterclockwise about the support shaft 5 against the biasing force of the spring 18. Accompanying this, the contact between the vertical piece 17 of the head board control member 14 and the head board 19 is released, the head board 19 is moved to the right under the force of the spring 24, and the cassette already installed in the playing position The magnetic head 20 and the pinch roller 21 are inserted into the player, and the performance starts. At the end of the above operation, the sliding member 25 slides until the lower tip 35 of the sliding member 25 hits the upper bent piece 70 of the first activation lever 60, as shown in FIG. At this time, the clutch device 5
6, in the state shown in FIG. 9, the connecting gear 59 is still engaged with the driving gear 54, and when the information member 25 is further slid to the right, the first activation lever 60 moves to the allowable stroke of the small hole 63. , the activation member 8 is disengaged from the protrusion 13 , and when the notch 65 arrives, the first and second activation levers 60 and 61 are rotated clockwise by the bias of the spring 69 . , the rotating plate 55 rotates counterclockwise and the connecting gear 59
The drive gear 54 is disconnected, the rotation of the pinion gear 30 is stopped, and the movement of the driving member 25 is stopped (see FIG. 11).

At this time, the holding lever 31, which until now has been prevented from rotating by the lower tip 35 of the sliding member 25, is rotated clockwise by the tapered side 34 as the sliding member 25 is slid to the right. Then, the slide lever 38 is moved forward by the biasing force of the spring 41, the adsorption iron piece 40 is attracted by the electromagnet 39, and the holding lever 31 is held in the rotated state.

Accordingly, the tapered side 34 of the performance member 25 supports the holding lever 31, so that the sliding member 25 is prevented from moving to the left and enters the playing state (see FIG. 12). Next, the eject operation for canceling the playing state will be explained.

When the rigid lever 42 is pressed, the tip 43 comes into contact with the slide lever 38, and the spring 41 and electromagnet 3
9 and forcibly separate the adsorbing iron piece 40 from the electromagnet 39 and move the slide lever 38 backward, the holding lever 31 is rotated counterclockwise, and the tapered side 34 of the sliding member 25 and the holding lever 31 are rotated counterclockwise. is disengaged.

As a result of this disengagement, the hammer member 25 is immediately slid to the left by the biasing force of the spring 26, and the head board control member 14 is first rotated clockwise by the biasing force of the spring 18 due to the movement of the sliding part village 25. The vertical piece 17 is returned upward while being moved.
presses the head substrate 19, moves the head substrate 19 to the left, and moves the magnetic head 20 and pinch roller 21 away from the cassette. Subsequently, the cassette holder 1 is returned upward. When the sliding member 25 is slid to the left end, the engaging piece 11 of the starting member 8 and the long thread 27 of the sliding member 25
The activation member 8 slides forward along the support shaft 5 due to the bias of the coil spring 9, and the cassette is ejected from the holder 1. At this time, due to the forward movement of the starting part village 8, the engagement between the lower protrusion 13 of the starting part village 8 and the notch part 65 of the first starting lever 60 is released, and the first starting lever 60 is moved by the spring 69. When energized, it returns to the state shown in FIG. 7. The cassette is thus ejected and returned to the non-playing position. Also, if the engine key switch or power switch is turned off during a performance, the power to the electromagnet 39 of the holding device is cut off, causing the suction force to disappear and the spring that energizes the sliding member 25 to stop. 26 is set to be stronger than the spring 41 which urges the slide lever 38, the return force acting on the sliding member 25 is stronger than the holding force which urges the holding lever 31 forward. is strong, and the emotional member 25 is slid to the left while rotating the holding lever 31 counterclockwise on one tapered side 34.

Thereafter, the cassette is ejected in the same manner as the ejection operation described above. In this way, even if electricity is cut off and the tape drive mechanism stops during a performance, the cassette can be reliably ejected and damage to the pinch roller etc. can be prevented. As described above, the cassette tape recorder of the present invention automatically moves the cassette from the upper non-playing position to the lower playing position by using the driving force of the motor when the cassette is installed, and when the cassette is moved to the playing position. I purchased a device that stores energy in the spring, uses the attraction force of the electromagnet to hold it in the playing state, and when the attraction force of the electromagnet is released, the stored energy of the spring returns the cassette to the non-playing position. When installing a cassette, simply insert the cassette into the holder and slowly move the cassette to the playing position, improving operability and turning off the engine key switch or power switch during playing. Even if the cassette is cut off, the cassette can be automatically returned to the non-playing position using the accumulated firing energy when the electromagnet's attractive force disappears, and if you turn off the engine key switch and leave the car while the cassette is playing. It also prevents damage to pinch rollers, etc., making it extremely useful for vehicle battles.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the cassette tape recorder of the present invention, Fig. 2 is a front view, Fig. 3 is a side view, Fig. 4 is a view showing the drive mechanism of the invention, and Fig. 5 is a main part. 6 to 12 are operation explanatory diagrams showing essential parts of the present invention. 1...Cassette holder, 8...Starting member, 14...Head board control member, 19...
...Head board, 25...Sliding member, 32...
...Holding device, 39...Electromagnet, 42...
...Eject lever, 44...Motor, 54...
... Drive gear, 55 ... Rotating plate, 56 ... Clutch device, 59 ... Connection gear, 60 ...
First activation lever, 61...Second activation bar. Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 Figure 7 Figure 9 Figure 5 Figure 8 Figure 10 Figure 11 Figure 12

Claims (1)

[Scope of Claims] 1. A starting member that is slid by inserting the cassette into the cassette holder and is energized in the direction of ejection of the cassette, and a tape drive motor in a direction perpendicular to the sliding direction of the starting member. a sliding member that is slid while engaging with the activation member due to the driving force of and holds the activation member in a predetermined position;
a spring for urging the sliding member to a predetermined position; a cassette holder that is moved from a non-playing position to a playing position in connection with the sliding movement of the sliding member; and driving a tape drive motor to the sliding member. It is composed of a clutch device that transmits force and a holding device that holds the sliding position of the sliding member after it has been slid a predetermined distance. A cassette-type tape recorder characterized in that after transmitting force and moving the cassette holder to a playing position by sliding the sliding member, the clutch device is shut off and the sliding member is further held by a holding device. . 2. The clutch device includes a first activation lever having a notch in the center and rotatably and slidably mounted, a second activation lever that is rotated in conjunction with the rotational movement of the lever, and a tape drive. a rotary plate on which a connecting gear for transmitting power to the sliding member by engagement with a drive gear to which rotation of the motor is transmitted is mounted and connected to the second actuating lever, and the rotary plate comprises a spring energized in a direction to separate from the drive gear, and the engagement between the drive gear and the connecting gear is controlled by controlling the first activation lever by the activation member and the sliding member. A cassette tape recorder according to claim 1. 3. Claims characterized in that the holding device comprises a holding lever that moves and engages with the sliding member when the sliding member finishes sliding, and electromagnetic means that locks the shifted state of the lever. The cassette tape recorder described in item 1.