KR0111782Y1 - Cassette lid opening deoice of tape recorder - Google Patents

Abstract

This invention relates to a cassette lid opening and closing device for opening and closing a tape cassette lid.

Cassette lid opening and closing device according to the present invention is installed on the upper side of the pinch roller is elastically installed on the upper side of the rotating support member is configured to open and close the cassette lead only when the rotation support member is at the highest height And the production cost can be reduced by reducing the labor.

Description

Cassette lid opening and closing device of tape recorder

1 is an exploded perspective view of a cassette lead opening and closing device and a pinch roller assembly of a tape recorder according to the prior art.

Figure 2 is a perspective view of the main portion of the cassette lid opening and closing device according to the prior art.

3 is a side view showing a driving state of the cassette lid opening and closing device and the pinch roller assembly shown in FIG.

Figure 4 is an exploded perspective view of the pinch roller assembly integrated cassette lid opening and closing device according to the present invention.

5A and 5B are side views each showing a state before and after the operation of the cassette lid opening and closing apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

10: gear member 13: boss member

31: pinch roller 200: rotation support member

210: cassette lid opening and closing means

The present invention relates to a lead open / close device of a tape recorder, and more particularly, to a cassette lead open / close device for opening and closing a cassette lead while being integrated with a pinch roller assembly.

Generally, in deck mechanisms such as video tape recorders and camcorders, when a tape cassette is inserted into the deck, the cassette lid opening and closing device opens and closes the cassette lid, and then the pinch roller assembly, a plurality of guide posts, and a pole base operate. The tape is pressed onto the rotating drum and, depending on the mode of operation, the tape passes between a number of guide posts and head drums, capstans and pinch rollers. In the regeneration mode, the pinch roller is press-loaded onto the capstan shaft and the tape is fed at a constant speed by the capstan and the pinch roller. Here, the pinch roller is in contact with the back surface of the tape, that is, the non-recording surface, and the tape is pressed against the capstan shaft, which will be described with reference to FIGS. 1 to 3.

1 is an exploded perspective view of a cassette lead opening and closing device and a pinch roller assembly of a tape recorder according to the prior art, and a cassette lid opening and closing device 2 is fastened to a separate fixing body 3 as a screw 4 on a deck 1. On the deck 1, the gear 5 which receives a driving force from the motor which is not shown in figure is provided in rotation. The gear 5 is meshed with a cam gear 7 provided with a cam projection 6.

In addition, a support shaft 8 is installed on the deck 1, and a gear member 10 engaged with the cam gear 7 is rotatably coupled to the support shaft 8, and to the gear member 10. Rotation support member 20 is elevated in accordance with the rotation of the gear member 10 is coupled so as to be idle each of the top dead center and bottom dead center.

One end of the pinch roller arm 30 having the pinch roller 31 provided on one side of the rotary support member 20 is elastically supported by the spring 40 to the pinch roller 31 toward the capstan shaft (not shown). It is installed to be biased.

Then, the rotation support member 20 is installed so that the pinch roller 31 installed thereon in the section of the bottom dead center can be pressed on the camston shaft.

The gear member 10 is formed integrally with this at the central portion of the gear member 10, the horizontal idle groove extending on the outer circumferential surface of the spiral groove 11 and a predetermined length in opposite directions from both ends of the spiral groove 11 And a boss member (13) having a (12).

The rotation support member 20 is a hollow portion 21 through which the boss member 13 penetrates, an inner protrusion 22 inserted into the spiral groove 11 and the horizontal idle groove 12 of the boss member 13, and rotates. It includes an outer projection 23 extending outward from the outer periphery of the support member 20. The guide member 50 includes an escape groove 52 formed at one side of the lower end of the guide groove 51 to which the outer protrusion 23 of the rotation support member 20 is slidably coupled up and down.

The operation state will be described when the tape cassette 60 is inserted into the conventional tape recorder deck having such a structure.

2 and 3, when the tape cassette 60 is inserted into the deck door (not shown), the locker 61A provided on the side of the tape cassette 60 is pressed. At this time, another locker 61B (see FIG. 3) is interlocked with the locker 61B, and the cassette lid 62 can be opened.

When the tape cassette 60 is completely inserted into the deck, the tape cassette 60 is lowered in the direction of the arrow A by a mounting mechanism (not shown). As shown in FIG. 3, as the tape cassette 60 is moved downward in the direction of the arrow A at the same position as the advantage section and moved to the position shown by the solid line, the cassette lid 62 is connected to the lid opening and closing apparatus 2. It is caught by the end and rotated in the direction of the arrow (B) to open.

When the opening operation of the cassette lid 62 is completed, a loading motor (not shown) is rotated. At this time, the gear 5 is rotated by receiving rotational force from the motor, thereby rotating a sector gear and a cam gear (not shown). .

Thus, as the review guide arm (not shown) fixedly installed in the sector machine is rotated, the review guide pole (not shown) brings the tape closer to the capstan shaft. At the same time, as the gear member 10 engaged with the cam gear 7 rotates, the rotation supporting member 20 descends. That is, when the gear member 10 is rotated, the spiral groove 11 formed in the boss member 13 of the gear member 10 is the inner protrusion of the rotation support member 20 inserted into the horizontal idle groove 12 ( 22 and the cam protrusion 24 formed by lowering the rotary support member 20 by the outer protrusion 23 of the rotary support member 20 coupled to the guide groove 51 of the guide member 50 so as to slide up and down. ) Comes into contact with the cam projection 6 of the cam gear 7.

In this state, when the gear 5 is further rotated, the rotary support member 20 is rotated to press the tape onto the capstan shaft while the pinch roller 31 is in contact with the rear surface of the tape. That is, when the cam gear 7 is further rotated, as the cam protrusion 6 formed therein pushes the cam protrusion 24 of the rotary support member 20, the rotary support member 20 is rotated, thereby rotating the support member 20. The tape is pressed onto the capstan shaft in a state where the pinch roller 31 of the pinch roller arm 30 provided at the upper end of the) is in contact with the tape back surface. At this time, the outer protrusion 23 of the rotation support member 20 is rotatable by the escape groove 52 formed on one side of the lower end of the guide member 50, the pinch roller 31 is capstan by the spring (40) By firmly pressing the shaft, the tape reproducing operation can be performed.

On the other hand, the pinch roller is released in the reverse order of the pressing operation as described above, the operation of the loading motor is stopped when the rotary support member 20 is maintained in the state as shown in the third degree, from this time the tape cassette 60 Unloading operation is performed. That is, the tape mounting mechanism (not shown) lifts the tape cassette 60 in the direction opposite to the arrow A in FIGS. 2 and 3. At this time, the cassette lid 62 is rotated in the opposite direction to the arrow B by its elasticity and is closed.

However, in the conventional tape recorder, the pinch roller assembly is installed on the main deck, and the cassette lid opening and closing device is mounted on a separate fixing plate installed on the main deck, thereby increasing the labor.

It is an object of the present invention to provide a cassette lid opening and closing device for reducing the number of work by integrally forming the cassette lid opening and closing device in the pinch roller assembly.

Features of the cassette lid opening and closing device of the tape recorder according to the present invention for achieving the above object are a gear member driven by a drive source, a rotation support member on which the pinch roller is elastically installed, and the rotation support member A cassette lead opening and closing apparatus of a tape recorder having pinch roller driving means including a boss member which is raised and lowered according to rotation of the gear member and idle at its top dead center and bottom dead center, respectively: And a cassette lid opening and closing means for opening and closing the cassette lid.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a cassette lid opening and closing device according to the present invention will be described in detail.

4 is an exploded perspective view of the pinch roller assembly integrated cassette lid opening and closing device according to the present invention, the same reference numerals as those of FIG. 1 in FIG. 4 denote the same parts, and thus the description thereof will be omitted. Explain.

As can be seen in Figure 4, the upper and lower movable support member 200 is capable of raising and lowering the cassette lid opening and closing means 21 is integrally formed, the cassette lid opening and closing the rotary support member 200 boss It is comprised so that it may be made at the top dead center of the member 10.

As shown in (a) of FIG. 5, when the tape cassette 60 is inserted into the deck and seated in the direction of the arrow A, the cassette lid 62 is caught by the end of the cassette lid opening and closing means 210. In this case, since the cassette lid opening and closing means 210 is maintained as shown in FIG. 5A, the cassette lid is opened to the maximum.

Then, as described above, when the rotary support member 200 descends from the top dead center of the boss member 13 to the bottom dead center by the rotation of the gear member 10, the cassette lid 62 is in a state as shown in (b) of FIG. Will be maintained. In such a state, the tape reproducing operation is performed as described above, thereby enabling the tape to be reproduced.

When the tape regeneration operation is completed and the tape cassette is to be taken out, first of all, the tape cassette 60 is unloaded after the rotary support member 100 is lifted by the gear member 10. By doing so, the ejection operation of the tape cassette can be performed.

As described above, the cassette lid opening and closing device according to the present invention is formed integrally with the pinch roller assembly, thereby reducing the manufacturing cost of the tape recorder by reducing the number of parts and labor.

Claims (2)

A gear member driven by a drive source, a rotation support member having a pinch roller resiliently installed thereon, and a boss member configured to allow the rotation support member to be elevated according to the rotation of the gear member, and to rotate at their top dead center and bottom dead center, respectively. A cassette lead opening and closing device of a tape recorder having a pinch roller driving means comprising: a cassette lead opening and closing device of a tape recorder, the cassette lead opening and closing means being formed integrally with the rotary support member and configured to open and close a cassette lead. The cassette lid opening and closing apparatus of claim 1, wherein the cassette lid opening and closing means opens and closes the cassette lid only when the rotary support member is positioned at the top dead center of the boss member.