JPS6138119Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cassette mounting device for a cassette tape recorder, and is particularly suitable for a thin cassette deck with a low panel surface height, which makes it easy to take out a cassette when the cassette is ejected.

In the conventional single-fulcrum type arm-type cassette mounting device, since the fulcrum is close to the cassette side, the cassette hits the tip of the capstan when the cassette is mounted, making it impossible to mount the cassette. Therefore, as in this embodiment, it is effective to allow the cassette to escape parallel to the capstan, that is, perpendicularly to the chassis surface, before it escapes from the capstan, and then rotate the cassette holder to facilitate the removal of the cassette. This is particularly effective for thin upright tape recorders with a panel height of approximately 120 mm or less.

In the above structure, the present invention consists in moving the cassette in the ejection direction and projecting it from the cassette holder after the cassette has moved vertically, in order to further facilitate the removal of the cassette.

Therefore, in the present invention, although the cassette ejection arm is always brought into contact with a partially protruding part of the cassette holder, when the cassette holder moves vertically from the chassis surface, it does not come into contact with the cassette, and the cassette holder shifts to a rotating state. In addition, the cassette ejection arm moves as the protrusion integrated with the cassette holder rotates, comes into contact with the cassette, and further pushes out the cassette.

Embodiments of the present invention will be described below with reference to the drawings. 1
indicates a chassis, 2 and 2' are cassette positioning guides molded on the chassis, 3 is a head plate slidably guided on the chassis, 4 is a magnetic head fixed on the head plate, and 5 is also a head. a magnetic head fixed on a plate; 6 a pinch roller arm rotatably attached to the shaft established on the shaft; 7 a pinch roller rotatably attached to the pinch roller arm 6; 8; is a capstan that is fixed to the flywheel 9 and rotatably mounted on a bearing 1' fixed on the chassis, and the pinch roller 7 pinches and presses the tape, thereby controlling the rotation of the capstan. The tape is then driven. Reference numeral 10 denotes a cassette ejecting arm, which is rotatably mounted around pins 12 on holders 11 and 11'. 13 is a spring for the cassette ejection arm, 14 is a side plate A attached to the chassis, 14a and 14b are guide holes, 15 and 15' are shafts fixed on the chassis 1, and 16 and 17 are tape drive turntables. It is rotatably mounted around shafts 15, 15'. 18 is a side plate B attached to the chassis;
18a and 18b are guide holes, 19 is an intermediate pulley, and the rotation of the turntable 17 is transmitted by a belt. 20 is fixed to the chassis with a solenoid mounting plate. 21 is a shaft established on the side plate A14, 22 is an ejection lever rotatably attached to the shaft 21, and 24 is a cassette holder having a guide capable of holding a cassette. 24a is a guide hole approximately in the shape of a cassette, 24b is a pin attached to the cassette holder 24, and 24c is a protrusion that is integrally attached to the cassette holder 24, and is connected to the cassette ejection arm 10 when the cassette holder is moved up and down and rotated. Always in contact with spring 13
is under a load of 25 is side plate A14, side plate B
Motor A 26 and motor B 27 are fixed to holder 18 with screws or the like. It also serves to regulate the thrust position of the flywheel 9. A belt 28 transmits the power of the motor to the flywheel 9. 29 is a solenoid, 3
0 is a plunger, 31 is a pin attached to the plunger pin, and 32 is a head plate operation lever A that works together with other members by energizing a solenoid to slide the head plate 3 to the playback/recording position. A damper arm 33 is rotatably attached to a pin 24b of the cassette holder 24. 34 is an elastic member such as rubber attached to the damper arm 33, and is pressed against the gear on the reduction gear 35 by a spring 36 hung between the damper arm 33 and a damper wire 38 attached to the chassis. Ru. It is assumed that the speed reduction device 35 also includes a wind panel. 37 is an annular washer made of plastic or the like, which is interposed between the damper wire 38 and the spring 36, and is attached so as to be able to slide on the damper wire 38. 39 is a spring applied between pin 40' on link lever A43 and side pressure B18, 40 is link lever A43
The other upper pin is loosely engaged with the guide hole 14a of the side plate A14. 41 is a pin on the link lever B42, which is loosely engaged with the guide hole 14b of the side plate 14. Also, on the other side, pins 40' and 41' are attached to the side plate 18.
The guide holes 18a and 18b are respectively loosely engaged with each other, and the pins 40 and 41 are located at positions symmetrical to each other.

Reference numeral 43 denotes a link lever A, which is rotatably attached to the link lever 42 by a pin 44, and has a pin 40 at one end and a pin 46 at the other end, and the pin 46 is the rotation fulcrum of the cassette holder 24. becomes. 46 is a locking pin fixed on the link lever 42, and 45 is a locking pin fixed on the link lever B. When the cassette holder is closed (Fig. 5), the locking portion 47b of the eject slider 47 is locked. It is locked. Reference numeral 47 denotes an eject slider, which is slidably mounted on the side plate A14 and biased in one direction by a spring 48. Also, one end has an eject lever 22.
By rotating the eject lever 22 in response to this, the eject slider 47 slides and removes the lock pin 45 from the lock portion 47b. 47
Reference characters a, 47b, and 47c represent the shapes of the cams in the lock portion, and 47d represents the shape of the cam on an extension of the radius R centered on the pin 41 in FIG. 49 is pin 4
0, a cassette holder 50 presses the cassette toward the head, 51 a cassette, and 52 a part of the case.

Next, the operation of the present invention will be explained. When the cassette is in contact with the positioning guides 2 and 2' on the chassis 1, that is, in the playing state, the lock pin 45 is positionally regulated by the cam 47b on the eject slider 47. Pin 4 on link lever A43
0 is located on the right end side of the guide hole 14a, and the pin on the link lever B42 is located on the upper right side of the "shaped guide hole of the cassette holder 24, so the cassette holder 24 is held in the state shown in FIG. . At this time, the damper arm 33 is at the lowest position, and therefore the spring applied to the damper arm 33 is located near the lower end of the damper wire 38.
In this state, the protrusion 24c, which is integral with the cassette holder 24, is located below the cassette ejection arm 10 and receives the load of the spring 13.

The position of the cassette holder shown in FIGS. 4 and 5 is assumed to be the first position.

Next, the operation when ejecting a cassette will be explained. First, from the state shown in FIGS. 4 and 5, that is, the first position, when the eject lever 22 is pressed in the direction A, the eject lever 22 rotates counterclockwise. , the eject slider 4 is located at the other end of the lever 22.
Slide 7 to the right. When the lock pin 45 on the link lever 13 slides until it disengages from the lock portion 47b of the eject slider 47,
Due to the force of the spring 49 applied to the pin 40 on the link lever A43, the pin 40 is moved to the side plates 14, 1.
Slide the guide holes 14a and 18a of No. 8 to the left end. Link lever A43 accompanying this slide
As a result of this operation, the link lever B42 rotates about the pin 41 as a fulcrum, resulting in the state shown in FIG. This movement causes the cassette holder 24 to move perpendicularly to the chassis 1. Here, the position of the cassette holder shown in FIG. 6 is assumed to be the second position.

At this time, the cassette ejection arm 10 is moved by the spring 1
3, the partial protrusion 24c of the cassette holder 24
Press. Due to this pressing force, the cassette holder receives a biasing force in a counterclockwise direction about the fulcrum 46.
This biasing force is applied to the "shaped hole 24" of the cassette holder 24.
When the pin is in contact with the upper part 24a' of 24a', the cassette holder 24 is prevented from rotating, and when it is away from the corner of 24a', it is rotated by the biasing force.

Furthermore, the cassette holder 24 is rotated by the biasing force, as shown in FIG. 7, until the other end 24a abuts against the pin 46. This position is defined as the third position.

The cassette holder 24 moves perpendicularly to the chassis 1 from a first position to a second position and pivots from a second position to a third position, and operates continuously.
The damper arm 33 and the elastic member 34 attached to the arm 33 also move continuously from the first position to the third position in accordance with the movement of the cassette holder 24, and the gear on the reduction gear 35 moves as the elastic member 34 moves. It rotates as it moves and applies a damper to the damper arm 33 and elastic member 34. As a result, the cassette holder 24 with the damper arm 33 attached
It is possible to apply a damper to the releasing force of the cassette holder due to the spring force 49 in the opening direction and the spring force 13 for rotating the cassette holder. Moreover, since the spring 36 and the washer 37 continuously slide on the damper wire 38 in the first position, second position, and third position, the damper arm 33
Although the amount of movement of the cassette holder 24 is quite large, the amount of displacement of the spring does not substantially change, and therefore the pressing direction is also approximately constant, and the pressing force can be kept within an appropriate range. On the other hand, the above 36 springs are not loaded in one direction, and the damper effect is approximately constant. The washer 37 has the effect of smoothing the uneven movement caused by friction when sliding the dump wire 38 and preventing the generation of resonance noise of the spring.

Next, when the cassette holder 24 is displaced from the second cassette holder position to the third position, that is, when the cassette holder 24 changes from being displaced perpendicularly to the chassis to rotating around the pin 46, the movement of the cassette holder 24 can be made more smoothly and continuously. A device for directional displacement will be explained.

When ejecting, the cassette holder 24 moves vertically relative to the shaft until the pin 46 leaves the hole 24a', and after the pin 46 leaves the hole 24a', it rotates around the shaft 24 until the pin 46 hits the hole 24a. The rotating device has been described above, but in order to smoothly move the cassette holder 24 when moving from vertical to rotating operation, the lock pin 45 is
In order to control the operation after the lock is released from 47b, the shape of the cam part 47 will be described in the state shown in FIG. It consists of a cam that is inclined more inward than the cam and a cam that is provided with a vertical surface 47a for regulating the amount of movement of the slider 47 so that the locus of the pin 45 always hits 41b, and the right side of the eject slider. When the lock pin 45 moves away from the corner of the 47b section, the lock pin 45 first moves along the radius R, then comes into contact with 47b from the middle, and as the lock pin 45 moves, the eject slider moves to the right. let At this time, in order to further extend the spring 49 applied to the eject slider 47 and applying tension to the left, the movement of the lock pin 45 is braked, slowing down the movement, and therefore stopping at the left end of the guide hole 14a. The impact noise of the 40 pin is reduced,
The movement of the cassette holder 24 also smoothly transitions from vertical movement to rotational movement.

Next, move the second cassette holder from the first cassette holder position.
To explain the movement of the cassette when it is displaced to the third position, in the first position, the cassette 51
is pressed in the head direction by the cassette presser 50, and the cassette is positioned on the vertical plane of the cassette positioning guides 2, 2'. This state is the playable state, and when the solenoid 29 is energized, the head plate 3 is moved toward the cassette via the lever 32, and the head on the head plate 3 comes into contact with the tape, and the tape is applied to the capstan 8 and pinch roller 7. Drive the tape by pinching it. In this first position, the cassette ejection arm 10 is in contact with the protrusion 24c of the cassette holder 24 and is away from the cassette.

Then, in the second position, the cassette 51 hits the chassis 1 and moves vertically away from it. During this time, the cassette ejecting arm 10 always moves toward the protrusion 24c.
is in contact with the spring force 13. Due to the biasing force of the spring 13, a moment is always applied to the cassette holder 24 to rotate counterclockwise about the fulcrum 46, but the rotation is prevented by the pin 46 through the hole 24a' of the cassette holder 24. ing. In this state, the inside of the cassette ejection arm is located behind the surfaces of the cassette guides 2, 2' that contact the cassette, so that it does not come into contact with the cassette. However, as shown in FIG. 6, when the pin 6 separates from 24a', the cassette ejection arm 10
The cassette holder 24 begins to rotate due to the biasing force. While the cassette ejection arm 10 rotates the cassette holder 24, the arm 10 itself also rotates clockwise as the projection 24c moves. At this time, the front end of the cassette ejection arm 10 pushes out the front surface of the cassette in the direction B. In the third position, the cassette can be pushed out from the tip of the positioning guide by the L dimension. Therefore, it is convenient and easy to take out the cassette. Moreover, since the cassette does not move relative to the cassette holder from the first position to the second position, the cassette does not hit the case 52, and moreover, the cassette 51 is pushed out after passing the end of the case 52. Therefore, a tape recorder can be created in which the width of the cassette is small and the cassette is easy to take out.

As described above, the present invention is particularly useful for thin decks, in which the cassette holder is moved vertically so that the cassette is not restrained by a capstan, etc., and the cassette loading device opens above the panel surface and rotates to a position where the cassette can be taken out. This is an extremely effective means for sliding the cassette in the direction in which it pops out from the cassette holder for ease of loading, and is extremely simple, inexpensive, and convenient in construction.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the present invention with the cassette loading device in the playable position. Figure 2 is a back view of Figure 1,
FIG. 3 is a side view of FIG. 1, and FIG. 4 is the other side view of FIG. 1, showing a state in which the cassette loading device is locked. FIG. 5 is a main side view of the present invention, showing the cassette loading device locked in the playable position. FIG. 6 is a main side view of the present invention, showing the position of the cassette loading device at the end of its vertical movement relative to the chassis. FIG. 7 is a main side view of the present invention, showing the cassette mounting position of the cassette mounting device. 10...Cassette ejection arm, 24...Cassette holder.

Claims (1)

[Scope of utility model registration request] A cassette mounting device that attaches a cassette to a cassette holder and places the cassette in a position where it can be played. The position of the second cassette holder, which is spaced apart from the tip of the capstan, and the position of the third cassette holder, which is further rotated to make it easier to take out the cassette, can be continuously changed by applying pressure to the cassette holder so that the cassette holder is always biased. a cassette ejection arm that presses the cassette holder, and between the first cassette holder position and the second cassette holder position said cassette ejection arm faces away from the cassette, and from the second cassette holder position to the third cassette holder position A cassette mounting device characterized in that it is configured to contact a cassette at a certain position and further discharge the cassette.