KR0117904Y1 - Tape recorder reel clutch device - Google Patents

Abstract

A reel clutch device for converting a rotational torque of a reel table with a simple structure is disclosed. The apparatus includes a main rotating body 240 that is rotationally driven from the motor and loosely coupled to the shaft 290; A friction rolling element 200 having a boss 202 rotatably coupled to the shaft through a center of the main rotating body and frictionally rotating with the main rotating body;

A closing boss 230 press-fitted to the top of the boss;

A first motor body 210 coupled to rotate with the finishing boss and having a first coupling means axially movable to the finishing boss and having a first gear portion 211 formed on an outer circumferential surface thereof;

A first spring 280 disposed between the first motor and the main rotor to elastically bias the first motor to the finishing boss;

A second electric motor 220 rotatably coupled to the first electric motor and having a second gear portion 222 formed on an outer circumferential surface thereof, the second electric motor 220 being rotatably installed together with the first electric motor by a predetermined pressing means;

Second coupling means for coupling the second motor body and the main rotating body to be always rotated together;

And a connecting means for selectively connecting the first gear part and the second gear part which are lifted by the pressing means to the reel table so that the reel table is driven by the same power as the motor when the second gear part is connected to the reel table. It is configured to be.

Description

Reel clutch device of tape recorder

1 is a schematic view showing a conventional reel clutch device,

Figure 2 is an exploded perspective view showing the main portion of Figure 1,

3 is a schematic view showing a PLAY state of the reel clutch device according to the present invention,

Figure 4 is a schematic diagram showing the state of the F.F mode of the reel clutch device according to the present invention,

Figure 5 is an exploded perspective view showing the main portion of the reel clutch device according to the present invention,

6 is a perspective view of FIG.

* Explanation of symbols for main parts of the drawings

200 --- Friction motor 210 --- Friction member

210 --- First driving body 211 --- First gear

220 --- 2nd train 221 --- Locker

220 --- 2nd motor 230 --- Finishing boss

231 --- Coupling rib 240 --- Main rotor

241 --- Locker hole 242 --- Hanging jaw

270 --- 2nd spring 280 --- 1st spring

310,320 --- Reel table 410 --- Base

500 --- Idler Assembly 501 --- Third Gear

502 --- 4th Gear

The present invention relates to a reel clutch device of a tape recorder, and in particular, a reel clutch device of a tape recorder for switching power so that a large torque and a small torque can be selectively transmitted from a driving source to two reel driving tables on which tape reels are respectively seated. It is about.

In general, tape recorders such as VTR and DAT are equipped with a reel clutch device that switches power so that large and small torques can be selectively driven on the supply reel and the reel when changing modes such as PLAY, REW, FF, and REV. .

For example, this reel clutch device converts the power of the driving source into a small torque in a low speed mode such as PLAY or REV and transmits it to the reel table, and a large torque for fast rotation of the reel table in a high speed mode such as REW and FF. To be delivered.

1 and 2 show a schematic cross-sectional view and an exploded perspective view showing such a reel clutch device.

The reel gears 31 and 41 are respectively provided on two reel tables 30 and 40 on which tape cassettes (not shown) are seated, and the reel tables 30 and 40 are separated by a predetermined interval and the base ( It is installed on 110). Between the two reel tables 30 and 40, a clutch assembly 50 and an idler assembly 90, which are main parts of power switching, are provided on the base 110.

The clutch assembly 50 is coupled to the shaft 120 by passing through a center of the main rotating body 60 and the main rotating body 60 is driven by a motor (not shown) and the belt 65 A friction motorized rotating body 70 having a boss 71 and attached with a felt 66 so as to frictionally rotate with the main rotating body 60; A rotator comprising a small-diameter gear 81 and a large-diameter gear 82 having a clutch means that can be integrally rotated and selectively coupled to the main rotating body 60 from the pressurizing means so as to be driven by the motive force of the motor. 80).

In addition, the idler assembly 90 has a connecting lever 95 mounted on the shaft 120 so that one end of the idler assembly is rotatably supported. The idler assembly 90 coaxially supports the support shaft 93 on the connecting lever 95. The small gear 92 is assembled. At this time, the standby gear 91 and the small gear 92 is rotated at the same angular speed, and between the two gears (91, 92) through the spring 94 to have a buffering effect when engaged with the other gears. .

Here, the gear 91 is selectively engaged with two reel gears 31 and 41 by rotating the connecting lever 95 in accordance with the rotational direction of the main rotating body 60, and by the pressing means When 80 is moved downward, the small-diameter gear 81 falls out of engagement with the standby gear 91, and at the same time, the large-diameter gear 82 is engaged with the small gear 92.

On the other hand, the clutch means forms a plurality of projection insertion holes 61 in the main rotational body 60, and extends from the bottom surface of the large-diameter gear 82 in the primary rotational body 80 to insert the respective projections. Forming a plurality of projections (83) coupled to the ball 61, having a through hole 76 corresponding to the projection insertion hole 61 and the coupling hook 77 is coupled to the rotator 80 The rolling element 75 is coupled to the boss 71, and is configured via a spring 78 between the rotator 80 and the rolling element 75. Here, when the rotator 80 is moved downward by the pressing means, the projection 83 is coupled to the projection insertion hole 61 through the through hole 76, and the rotator 80 is the main cylinder. Together with the rotating body 60, it is driven by the driving force of the motor. On the other hand, when the pressing means is released, the rotator 80 is lifted by the spring 78 so that the projection 83 is pulled out of the projection insertion hole 61 and the through hole 76, the motive rotator 80 ) Is frictionally rotated with the main rotating body (60).

On the other hand, the pressing means may be activated by a push lever 100 which is linked to a slider (not shown) sliding left and right according to the mode change.

However, the reel clutch device as described above has the following problems.

In order for the plurality of projections 83 of the cylindrical rotating body 80 for power switching to be correctly coupled to the projection insertion hole 61 of the main rotating body 60 via the through hole 76 of the rolling element 75. A plurality of guide ribs 79 for guiding the cylindrical rotor 80 and a coupling hook 77 for preventing separation of the cylindrical rotor 80 must be formed on the rolling member 75, which makes the structure complicated and easy to assemble. The problem is that it is cumbersome.

The present invention was created to solve the above problems, and an object thereof is to provide a reel clutch device of a tape recorder whose structure is improved to allow a power conversion into a simple structure.

The present invention to achieve the above object is a reel clutch device of a tape recorder for transferring the power of the motor to the reel table on which the reel of the tape cassette is seated,

A base on which the reel table is installed,

A shaft fixed to the base,

A main rotating body rotatably driven from the motor and loosely coupled to the shaft;

A friction electric rotating body having a boss that is rotatably coupled to the shaft through the center of the main rotating body and frictionally rotated with the main rotating body;

A closing boss fixed to the top of the boss by press fitting,

A first motor body coupled to rotate with the finishing boss and having a first coupling means configured to be axially movable to the finishing boss and having a first gear part formed on an outer circumferential surface thereof;

A first spring installed between the first motor body and the main motor body to elastically bias the first motor body to the finishing boss;

A second motor body rotatably coupled to the first motor body and having a second gear portion formed on an outer circumferential surface thereof, the second motor body being installed to be liftable with the first motor body by a predetermined pressing means;

Second coupling means for coupling the second motor body and the main rotating body to be always rotated together;

And a connecting means for allowing the first gear portion and the second gear portion to be elevated by the pressing means to be selectively connected to the reel table.

The reel table may be driven by the same power as that of the motor when the second gear part is connected to the reel table.

According to a feature of the present invention, the second motor body and the main rotating body is always rotated together so that the operation of combining the second motor body and the main rotating body separately to transfer the power, such as the power of the motor to the reel table Remove it. Therefore, there is an effect of simplifying the operation structure and its configuration.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 and 4 show cross-sectional views of main parts of the deck mechanism of the tape recorder employing the reel clutch device according to the present invention, and FIG. 5 is an exploded perspective view showing the main parts of the reel clutch device according to the present invention.

The base 410 is provided with reel tables 310 and 320 on which reels of tape cassettes (not shown) are seated, and reel gears 311 and 21 are formed on these reel tables 310 and 320. . Between these two reel tables 310 and 320, a clutch device according to the present invention for converting and transmitting the power of a motor, not shown, to a large torque or a small torque is installed in the two reel tables 310 and 320.

The clutch device is coupled to the shaft 290 is fixed to the base 410 the following components. The main rotating body 240, which is connected to the motor and the belt 245 for rotation driving, is loosely coupled to the shaft 290, and has a boss 202 penetrating the center of the main rotating body 240, and the main rotating body A friction rolling element 200 frictionally rotated with the whole 240 is rotatably coupled to the shaft 290. A friction member 201 in friction contact with a lower surface of the main rotating body 240 is attached to an upper surface of the friction rotating body 200.

And the upper end of the friction motor 200, the boss 202 is press-fit fixed to the boss, the finishing boss 230 is coupled to rotate with the finishing boss 230 and the finishing boss 230 The first motor 210 is movable in the axial direction and has a first gear portion 211 on the outer circumferential surface thereof. The first motor 210 is coupled to the finishing boss 230 by a predetermined first coupling means.

The first spring 280 is elastically biased between the first motor 210 and the main rotating body 240 to elastically bias the first motor 210 to the finishing boss 230. The second spring 270 is coupled between the 230 and the main rotating body 240.

A second motor body rotably coupled to the first motor body 210 and having a second gear part 222 formed on an outer circumferential surface thereof and movable up and down together with the first motor body 210 by a predetermined pressing means ( 220 is combined. Here, an annular jaw 213 is formed at the lower end of the first electric motor 210 so that the second electric motor 220 is supported.

The pressing means may be a lever member 400 that is linked to a slider (not shown) sliding on the bottom of the base 410 as shown in FIGS. 3 and 4.

And a second coupling means for coupling the second electric motor 220 and the main rotating body 240 to always rotate together, and the first gear part 211 and the second gear lifted by the pressing means. Connection means for allowing the unit 222 to be selectively connected to the reel table (310, 320) is provided.

The first coupling means for coupling the finishing boss 230 and the first motor body 210 forms a plurality of coupling ribs 231 formed on the outer circumferential surface of the finishing boss 230 at predetermined intervals and extending in the axial direction. On the inner circumferential surface of the first motor 210, a plurality of rib grooves 212 are formed to correspond to the coupling ribs 231 to which the coupling ribs 231 are coupled. Here, the jaw portion 232 is formed in the finishing boss 230 so that the first motor 210 is not separated.

The second coupling means for coupling the second electric motor 220 and the main rotating body 240 is concentrically and intermittently with the main rotating body 240 of the locking hole 241 and each of the locking holes 241. A locking jaw 242 is formed therebetween, and a plurality of lockers 221 locked to the locking jaw 242 and accessible to the locking hole 241 are formed on a lower surface of the second motor 220. Has a configured configuration. In this case, the first and second motors 210 and 220 are elastically supported by the first spring 280 so that the locker 221 does not enter the rocker hole 241, but is pressed by the pressing means. When the two electric motors 220 are pressed, the rocker 221 enters the rocker hole 241.

On the other hand, the connecting means;

It is rotatably installed on the base 410 to selectively transfer power between the two reel tables (310, 320), and the reel gear (311, 321) of the reel table (310, 320) And a third gear portion 501 directly connected and always coupled to the first gear portion 211, and a fourth gear portion 502 integrally and coaxially installed with the third gear portion 501. With the idler assembly 500, the second motor 220 is moved by the pressing means to be coupled to the fourth gear 502, the reel table 310, 320 is the driving force of the motor It was driven to. Here, the first gear portion 211 of the first transmission body 210 is always engaged with the third gear portion 501, and the first transmission body 210 moves downward together with the second transmission body 220. Even if it is, the first and third gear parts 211 and 501 are always engaged. Therefore, the tooth width of the first gear portion 211 is relatively large.

On the other hand, the idler assembly 500 is supported by the arm member 510 rotatably coupled to the shaft 290 to selectively transmit power between the two reel table (310, 320).

Thus, the reel clutch device of the tape recorder according to the present invention has the following effects.

See also low speed drive 3 of the reel table such as the PLAY and REV modes. First, the pressurization means are not operated. Accordingly, the first and second motors 210 and 22 are moved by the first spring 220. It is elastically supported in the direction. Accordingly, the second gear part 222 is separated from the fourth gear part 502 of the idler assembly 500, and only the first gear part 211 is engaged with the third gear part 501. It becomes. When the motor is driven in this state, the main rotating body 240 is rotated by the belt 245. At this time, the second electric motor 220 is rotated with the same torque as the main rotating body 240, the friction motor 200 is frictionally driven by the frictional force with the friction member 201. At this time, the finishing boss 230 press-fitted to the boss 202 of the friction motor 200 and the first motor 210 that is rotated together with the finishing boss 230 are the same torque as the friction motor 200. It is rotating.

Therefore, it is transmitted to the selected reel gear 321 through the third gear part 501 of the idler assembly 500 which is always engaged with the first gear part 211. Thus, the selected reel table 320 is rotated with less power than the power of the motor. That is, it rotates with less torque than a motor. Therefore, the tape runs while maintaining a constant tension.

Referring to FIG. 4 of a high-speed drive of a reel table such as REW and F.F, the pressurizing means is operated to press the upper surface of the second motor 220. At this time, the first and second motors 210 and 220 are lowered together while compressing the first spring 280, so that the locker 221 of the second motor 220 is coupled to the rocker hole 241 and simultaneously the second The gear portion 222 meshes with the fourth gear portion 502 of the idler assembly 500. On the other hand, the first gear part 211 maintains the meshed state with the third gear part 501.

In this state, when the motor is driven, the main rotor 240 is rotated by the belt 245, and the second motor 220 is also driven by the same power as the main rotor 240. Since the second gear part 222 and the fourth gear part 502 of the second electric motor 220 are engaged, and the third gear part 501 and the selected reel gear 321 are engaged with each other, the selected reel table 320 is selected. Is rotated at high speed by being driven by the same power as the motor.

On the other hand, the mode change from PLAY to REV or FF to REW is the two reel table 310 while the idler assembly 500 engaged with the first gear portion 211 is supported by the arm member 510 according to the rotation direction of the motor. Flow between the 320 and the third gear 501 is engaged with the two reel gears (311, 321) to selectively transmit power.

The reel clutch device of the tape recorder according to the present invention configured as described above has the following advantages.

First, since the second electric motor 220 and the main rotating body 240 that drive the reel table at the same torque as the power of the motor are always coupled to each other, a separate guide structure for coupling them is unnecessary. It has a simpler structure.

Second, since the first gear portion 211 of the first transmission body 210 is always engaged with the third gear portion 501 of the idler assembly 500, the mode change is quick.

Claims (4)

In a reel clutch device of a tape recorder for converting and transmitting power of a motor to a reel table on which a reel of a tape cassette is seated, A base on which the reel table is installed, A shaft fixed to the base, A main rotating body rotatably driven from the motor and loosely coupled to the shaft; A friction electric rotating body having a boss that is rotatably coupled to the shaft through the center of the main rotating body and frictionally rotated with the main rotating body; A closing boss fixed to the top of the boss by press fitting, A first motor body coupled to rotate with the finishing boss and having a first coupling means configured to be axially movable to the finishing boss and having a first gear part formed on an outer circumferential surface thereof; A first spring installed between the first motor body and the main rotating body to elastically bias the first motor body to the finishing boss; A second motor body rotatably coupled to the first motor body and having a second gear portion formed on an outer circumferential surface thereof, the second motor body being installed to be liftable with the first motor body by a predetermined pressing means; Second coupling means for coupling the second motor body and the main rotating body to be always rotated together; And a connecting means for allowing the first gear portion and the second gear portion to be elevated by the pressing means to be selectively connected to the reel table. Reel clutch device of a tape recorder, characterized in that the reel table is driven by the same power as the power of the motor when the second gear portion is connected to the reel table. The method of claim 1, The first coupling means forms a plurality of coupling ribs formed in the axial direction at predetermined intervals on the outer circumferential surface of the finishing boss, a plurality of ribs are coupled to the inner circumferential surface of the first transmission body corresponding to the coupling ribs A reel clutch device of a tape recorder, characterized by forming a groove. The method of claim 1, The second coupling means forms a locking hole concentrically and intermittently in the main rotating body, and forming a locking step between each locking hole, Reel clutch device of a tape recorder, characterized in that formed on the lower surface of the second transmission body, a plurality of lockers that are locked to the locking jaw and can enter the locking hole. The method of claim 1, The connecting means, A third gear part rotatably installed on the base to selectively transmit power between the two reel tables, the third gear part being directly connected to the reel table and always engaged with the first gear part; And an idler assembly having a fourth gear portion integrally and coaxially with the The reel clutch device of the tape recorder, characterized in that the reel table is driven by the driving force of the motor by moving the second electric body by the pressing means and coupled to the fourth gear.