KR930006780Y1 - Head sliding device for cassette deck - Google Patents

Abstract

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Description

Cassette Deck Head Lift Mechanism

1 is a schematic perspective view showing an embodiment of a cassette deck to which the present invention is applied.

2 is a plan view showing a state of reverse rotation by the automatic reversing mechanism of the cassette deck in FIG.

3 is an enlarged perspective view of the head assembly in FIG.

* Explanation of symbols for main parts of the drawings

1: Front plate 4, 4 ': hub shaft

5: idle gear 7: head

8 head assembly 801 rotation axis

802: head arm 803: round projection

804: pin 805: bracket

806: spring plate 807: head body

808: spring support plate 809: auxiliary support plate

9: pinch roller 11: reverse plate

12: main gear 13: cam gear

14: reverse lever 15: gear cam

16: reverse arm 18: guide lever

19: locking lever 20: R lever

21: projection 22: projection

23: sensor arm 27: half moon cam

28: rectangular hole 29: protrusion

30: cam 32: long hole

33: hand 34: cam

37: downward projection 38: plate

39: projection 40: reversing lever locking groove

41: downward groove 42: U-shaped projection

The present invention relates to a head-lifting mechanism of a cassette deck, and more particularly, to a head-lifting mechanism of a cassette deck that can be used for four-track during automatic inversion of a cassette deck using a two-track head.

In general, since the cassette tape is recorded in two directions starting from half the tape width, the cassette tape needs to be inserted upside down after listening to one side of the tape.

However, the above operation is not only inconvenient in a narrow place or a complicated place, but also difficult to perform the above-described operation while moving.

Therefore, in addition to the small cassette to be listened to when moving, the automatic reversing mechanism can be added to the large cassette deck to listen to sound in both directions without inserting or removing the cassette tape electrically or mechanically. It became.

In particular, in the car deck, an automatic reversing mechanism was added and used essentially to suppress unnecessary movement during operation.

In general, the cassette deck is composed of a cassette tape insertion mechanism, a head lift mechanism, and a cassette tape constant speed drive mechanism for driving a cassette tape inserted into the cassette deck.

In addition, an automatic reversing mechanism is usually formed in the cassette tape constant speed drive mechanism, and four track cores are formed in the head attached to the head lifting mechanism to reproduce sound at the time of automatic reversal.

Here, two of the four track cores formed in the head are used for forward rotation and the other two are used for reverse rotation.

However, the head of the four-track core is not only expensive, but inefficient operation of the two tracks of the core when the two tracks of the core is in operation.

Thus, in the related art, the purpose of achieving the object by rotating the head of the two tracks attached to the head assembly is not only to increase the size of the cassette deck due to the complicated mechanism due to the rotation of the head, thereby reducing the productivity of the cassette deck. There was this.

Accordingly, an object of the present invention is to provide a head-lift mechanism for a cassette deck that can prevent the complexity of the automatic reversing mechanism due to the use of two-track heads for four-tracks in the cassette deck, as well as to prevent productivity loss. Is in.

In order to achieve the above object, the present invention is supported by a head assembly which is movable with the tape surface perpendicular to the spring, the head arm which can move in the horizontal direction with the tape surface, and the head arm which can move the electric head and the moved head. It is characterized in that attached to the elastic member to return.

Hereinafter, a preferred embodiment of the present invention with reference to the accompanying drawings.

1 is a perspective view showing an embodiment of a cassette deck to which the present invention is applied, in which a conventional motor 2 is attached to one side of the front plate 1 and a hub shaft 4 at a central gear insert 3 of FIG. , 4 ') and the idle gear 5 is inserted, and the head assembly 8, to which the tape guide 6 and the head 7 are attached, is allowed to flow to one side of the upper surface of the front plate 1. In addition, the pinch roller 9 and the capstan 10 are attached to both sides of the head 7.

The idle gear 5 is attached to the inversion plate 11 and the main gear 12 connected thereto is in close contact with the cam gear 13, and the inversion lever 14 is provided on one side of the inversion plate 11. In addition to being connected for flow, the upper surface of the gear cam 15 is connected to the inverted arm 16 which can be rotated around the capstan 9 by the guide shaft 17.

In addition, the lock arm 19 which is operated by the guide lever 18 is in close contact with the gear cam 15, and the R lever 20 is connected by the protrusion 21 as well as the lock arm 19. The projection 22 which contacts the guide lever 18 is formed in the long side of the.

Here, the cam gear 13 is spaced apart at a certain distance from the lower portion of the gear cam 15 is fixed on the coaxial shaft, and the sensor arm 23 is in close contact with the forward rotation hub shaft 4 so as to flow. have.

And, on the upper surface of the head assembly 8, a conventional support (not shown), to which the angle adjusting bolt 24 of the head 7 is attached, is fixed by the bolt 25 supported by the spring and the front of the head 7. The guide post 26 is formed in this.

FIG. 2 is a plan view showing the reverse rotation state of the cassette deck by the automatic reversing mechanism of FIG. 1, and the forward rotation is stopped when the rotation of the forward hub shaft 4 is stopped by the end of the cassette tape interposed on the cassette deck. The sensor arm 23 supported by the half-moon cam 27 formed on the hub shaft 4 is returned, and the guide lever 18 in close contact with the sensor arm 23 is moved to the right.

The guide lever 18 moved to the right is in close contact with the cam 30 formed on the lower side of the cam gear 13 and the protrusion 29 on one side of the rectangular hole 28 formed in the center of the guide lever 18. The guide lever 18 is raised upward by the rotational force of the cam 30.

At this time, a long hole 32 is formed in a portion into which the rotation shaft 31 which fixes the guide lever 18 is formed to facilitate the upward movement of the guide lever 18.

The protrusion 22 formed on the long side of the lock arm 19 is pressed by the hand 33 formed on one side of the guide lever 18 to rotate the lock arm 19 and the gear cam 15. Release the locking state of the cam (34) formed.

The gear cam 15 in the locked state is rotated together with the cam gear 13 and engaged with the gear 35 formed on the main gear 12 to rotate.

As the gear cam 15 rotates, the inversion arm 16 connected by the gear cam 15 and the guide shaft 36 not only rotates, but also the downward direction formed on the inversion arm 16. The plate 38 into which the protrusion 37 is inserted is moved to the left side.

The reverse lever locking groove 39 formed in the plate 38 moved to the left and the reverse lever 14 connected by the protrusion 40 rotate to the right about the rotation axis and downward from the reverse lever 14. The inversion plate 11 which is connected to the groove 41 is moved.

The idle gear 5 fixedly installed on the reversing plate 11 to be moved is spaced apart from the forward rotation hub shaft 4, and connected to the reverse rotation hub shaft 4 ′ so that the rotation of the cassette deck is reversed and the head assembly ( 8) will rise.

FIG. 3 is an enlarged perspective view of the head assembly 8 in FIG. 2, in which the plate 38 is moved by the downward protrusion 37 formed on the inversion arm 16 and the plate 38. The c-shaped protrusion 42 of the squeezes the circular protrusion 803 of the head arm 802, one end of which is fixed by the rotation shaft 801, to rotate the head arm 802.

At this time, the head arm 802 fixed to the head assembly 8 is moved by the c-shaped protrusion 42 formed at a predetermined position of the plate 38, and is formed at one end of the head arm 802 described above. The pin 804 raises the head 7.

Here, the head arm 802 is fixed to be rotatable by the rotating shaft 801 supported by the ordinary bracket 805.

A pin 804 formed at one end of the rotating head arm 802 compresses the spring plate 806 and simultaneously raises the head body 807 on which the spring plate 806 is fixed.

Here, the head arm 802 and the head body 807 are fixedly mounted to the head assembly 8 by a conventional bolt and the spring plate 806 is fixed to both sides of the head body 807 so that the head arm is fixed. The compressive force of 802 is appropriately absorbed and adjusted.

The spring support 808 spaced by the spring is supported by the normal bolt on the front part of the head main body 807.

An auxiliary supporting plate 809 is formed between the spring support 808 and the head main body 807, and the head 7 is attached thereto so that the head 7 is raised as the head main body 807 rises. It is moved to a predetermined position.

In addition, when the reversed and completed rotation of the tape is reversed for forward rotation again, the head arm 802 supported by the c-shaped projection 42 of the plate 38 is reversed as the plate 38 moves. The head 7 moves backward by the spring inserted between the head main body 807 and the spring support 809, and moves to the forward rotation position.

As described above, the present invention forms a downward protrusion on the inverted arm interlocked with the gear cam to move the plate formed with the c-shaped protrusion at a predetermined position, and also moves the head in parallel with the tape surface through the head of the two tracks. Not only can it be used as a four-track, there is an advantage that can prevent the volume increase of the cassette deck due to the rotation of the head.

Claims (2)

In the cassette deck head lifting mechanism, the plate 38 which is supported by the frame of the cassette deck and can be moved as well as in close contact with the plate 38 having the protrusion 42 formed at a predetermined position and the protrusion 42 described above are interlocked. The head arm 802 which can be rotated and rotated, the head body 807 which can be lifted and rotated according to the rotation of the head arm 802, and the head 7 is fixed, A cassette deck head lifting mechanism, characterized in that it comprises a spring support (808) which is not only fixed by a fixing member of but also supported by an elastic member for the return of the head (7). The cassette deck head lifting mechanism according to claim 1, wherein a single-layer spring plate 806 is fixedly mounted to the head body 807 in close contact with the head arm 802 of the head body 807. .