KR940001749B1 - Ff/rew gear separation device at play for headphone stereo deck mechanism - Google Patents

Abstract

The FF/REW gear detaching apparatus during the play of a headphone stereo deck mechanism is disclosed in which an FF/REW lever is movably installed between intermediate gears, one end of the FF/REW gear is fixed to an FF/REW idler, the other thereof is fixed to the FF/REW lever, the FF/REW lever is connected by a coupling means to engage with a head drive, and a double-acting assist means for assisting the double acting of the FF/REW lever is provided, thereby preventing gear operation noise.

Description

FF / REW Gear Release on Headphone Stereo Deck Mechanism

1 to 5 show the configuration and operation of the FF / REW gear release device of the present invention, Figure 1 is a plan view of a stop mode state.

2 is a plan view of the state during the transition from the stop mode to the play mode.

3 is a plan view of a play mode state.

4 is a height relationship explanatory diagram showing the configuration of the FF / REW assembly.

5 is an explanatory view showing the height relationship between the FF / REW lever and the head drive.

6 is a plan view of a conventional headphone stereo deck mechanism.

7 (a) and 7 (b) are a partial perspective view and a plan view showing a state in which the FF / REW idler is locked to an idle rocker.

* Explanation of symbols for main parts of the drawings

1: main pulley gear 2: supply reel

3: winding reel 4, 5: middle gear

6: FF / REW idler 7: FF / REW gear

13: head drive 13a, 20b: spring hook

20: FF / REW lever 20a: guide worker

21, 22: spring 25: shaft

The present invention is directed to a headphone stereo mechanism (HEADPHONE STEREO DECK MECANISM) in the play mode of the FF / REW gear release device which prevents gear operation noise and reduces current consumption during play by deviating the FF / REW gear from the main pulley gear in the play mode. It is about.

The conventional headphone stereo mechanism is engaged with the main pulley gear 1, the supply reel 2 and the winding reel 3, the supply reel 2 and the winding reel 3, as shown in FIG. Intermediate gears 4 and 5 respectively installed, FF / REW idlers 6 rotating about the shaft 6a, atmospheric gears 7b engaged with the main pulley gear 1 and intermediate gears ( 4) and (5), a small gear 7a that is selectively engaged is formed integrally with the FF / REW gear 7 which is fixed to the FF / REW idler 6 by the shaft 7c.

Such a conventional apparatus has an FF / REW idler according to the rotation direction of the main pulley gear 1 that is rotated by the power of a motor (not shown) when performing the FF / REW (forward fast forward / reverse fast forward) mode. When the main pulley gear 1 rotates clockwise, the FF / REW idler 6 rotates counterclockwise about the axis 6a. As the small gear 7a of the FF / REW gear 7 meshes with the intermediate gear 4 and rotates, the supply reel 2 rotates so that reverse fast forwarding, that is, REW, is performed. On the contrary, when the main pulley gear 1 rotates counterclockwise, the FF / REW idler 6 rotates clockwise, and the small gear 7a of the FF / REW gear 7 meshes with the intermediate gear 5 to wind up. Fast forward, ie FF, is performed by rotating the reel 3.

Then, when the mode is switched to the play state in the stop mode, the projection 6b of the FF / REW idler 6 is constrained to the groove 8a of the idler rocker 8 as shown in FIG. The small gear 7a of the / REW gear 7 does not mesh with the intermediate gears 4 and 5. The upper standby gear 7a of the FF / REW gear 7 continues to mesh with the main pulley gear 1 to rotate.

As described above, the conventional device has a large rotational speed because the FF / REW gear 7 continues to rotate even in the play state, and rotates at a speed of about 1/2 of the motor rotational speed, and the gear noise is considerably severe. The load rises due to the friction with the rotating shaft 7c, and the current consumption increases considerably. Rotating speed must be constant during play, which is a problem in that the gear noise is severe and there is a defect that the service life of the battery is reduced by the increase of the current consumption.

The present invention has been made to solve such a conventional defect.

In the present invention, the FF / REW lever is installed to be linearly movable on the main base, and is connected to the head drive by means of connecting means such as a spring, so that the FF / REW lever can be moved back and forth together as the head drive moves back and forth. FF / REW idlers with FF / REW gears are pressed against the FF / REW levers and moved together, and the FF / REW assembly with FF / REW gears, idlers and levers is always in its original position (stop position). It is equipped with double acting assistance means to assist the return to the () mode so that the FF / REW gear is disconnected from the main pulley gear when switching from the stop mode to the play mode, so that the FF / REW gear is stopped without idling during the play mode.

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

1, 2, and 3 are plan views showing the stop, the switching process, and the play state of the device according to the present invention, respectively, and FIGS. 4 and 5 show the cross-sectional configuration of the main parts. First, as shown in FIGS. 1, 4, and 5, a main pulley gear 1 driven by receiving power from a motor, a supply reel 2, a winding reel 3, and a supply reel 2 ) And intermediate gears (4) and (5) provided to engage the winding reel (3), the FF / REW idler (6) condensed between the intermediate gears (4) and (5), and the idler (6) end. An FF / REW gear 7 which is condensed and transmits the power of the main pulley gear 1 to the intermediate gears 4 and 5, a head drive 13 for crimping the head and the pinch roller at the time of play, and The cam flow 14 driven by the cam gear 12 and the cam drive 19 driving the cam gear 12 and the cam drive 19 integrally with the vane bay. At the other end, the driving force is transmitted to the spring 23 connected to the cam drive 19, the cam gear 12 of the intermittent gear, the cam stopper 16 and the cam gear 12 to hold it at the stop and play positions. Drive gears 9, 10, 11, head rocker 15 for fixing the head drive 13 in the stop and play positions, idler rocker 18 interlocking with it, idler rocker 8 ) And a spring 24 and a solenoid 17 for restoring the head rocker 15 to the right side, and the FF / REW for moving the FF / REW idler 6 and the FF / REW gear 7 together. A spring 21 which is a connecting means for connecting the lever 20 and the FF / REW lever 20 to the head drive 13 so as to move the FF / REW lever 20 in association with the head drive 13; Soup is a double acting assisting means for applying the force so that the assembly of the FF / REW idler 6, gear 7 and lever 20 is always returned to the original position It is composed of 22.

The FF / REW lever 20 has a pair of guide holes 22a formed so that a pair of shafts 25 fixed to the main base are inserted into the guide holes 20a, respectively, so as to linearly move forward and backward by a predetermined distance. The FF / REW idler 6 is rotatably installed on a shaft 6a fixed on the FF / REW lever 20 and the FF / REW gear 7 is mounted on the FF / REW idler 6. 7c) is rotatably installed.

A spring hook 20c is formed in the extension section 20b of the FF / REW lever 20, and a spring length 13a is formed at a predetermined portion of the head drive 13 so that both ends of the spring 21 are formed. It is caught by the spring hangers 20c and 13a. Thus, the head drive 13 moves back and forth.

Both ends of the spring 22 are fixed to both shafts 25, and the middle part thereof is in contact with the shaft 6a to elastically support the shaft 6a to the rear so that the FF / REW idler 6 and the FF / The REW lever 20 is always adapted to return to its original position by being forced backwards.

Thus, the present invention has a fixed position in which the FF / REW gear 7 is disengaged from the main pulley gear 1 when switching from the stop mode of FIG. 1 to the play mode of FIG. 3, and in the stop mode, FF / REW can be performed.

Hereinafter, the operation and effect of the device of the present invention will be described in more detail. When the power is applied to the solenoid 17 in the first degree state and the force of the magnet is canceled, the solenoid movable piece 18 is dropped by the spring 23 and the cam The drive 19 rotates clockwise, and at the same time, the cam stopper 16, which is holding the cam gear 12, also rotates clockwise to release the cam gear 12.

In this manner, the end 19a of the cam drive 19 pushes the first cam curve 12a by the amount overlapped by the cam gear 12 as shown in (A) of FIG. 2. Direction is engaged with the drive gear 11 and from this time it is rotated clockwise by the driving force transmitted to the drive gear (11). As the cam gear 12 rotates, the shaft 14a of the cam follower 14 is moved forward by the second cam curve 12b of the cam gear 12, and at this time, the cam follower 14 is integrally formed with the cam follower 14. The head drive 13 is moved forward. Thereafter, the first cam curve 12a pushes the end portion 19a of the cam drive 19 so that the cam drive 19 rotates counterclockwise, so that the solenoid movable piece 18 is attached to the solenoid 17 again. It returns to the original position. Subsequently, as the cam gear 12 rotates clockwise, the cam flow 14 and the head drive 13 move forward and thus the FF / REW lever 20 connected by the head drive 13 and the spring 21. ) Moves downward by the force of the spring 21 and the FF / REW idler 6 and FF / REW gear 7 assembled in the FF / REW lever 20 overcome the force of the spring 22 The FF / REW gear 7 is separated from the main pulley gear 1 by moving downward in the ship. At this time, the shaft 14b of the cam flow 14 is constrained to the protrusion 15a of the head rocker 15 as shown in the partial detail B of FIG. 2 and the head drive 13 and the cam flow as shown in FIG. (14) The moving state is maintained, and the main pulley gear 1 and the FF / REW 7 are separated, and play is performed in this third degree state.

As described above, the present invention has the advantage that the FF / REW gear is separated from the main pulley gear and does not idle in the play mode, so that the operation noise of the gear can be prevented so that the quiet operation can be performed and the power consumption is also reduced.

Claims (4)

The FF / REW lever 20 is installed between the intermediate gears 4 and 5 of the main base so that the FF / REW lever 20 can be moved back and forth, so that the FF / REW gear 7 is fixed at one end thereof. Double-sided assistance means for the other end is fixed on the FF / REW lever 20, the FF / REW lever 20 is connected to the head drive 13 by a connecting means, and assisted when the FF / REW lever 20 double acting The FF / REW gear release device of the headphone stereo deck mechanism so that the FF / REW gear (7) is separated from the main pulley gear (1) during play. The FF / REW lever 20 is a straight line in a predetermined interval range according to claim 1, wherein a pair of guide holes 20a are formed in the FF / REW lever 20, and a pair of shafts 25 fixed to the main base are inserted. FF / REW gear release on play of the headphone stereo deck mechanism, characterized by being configured to move. The method according to claim 1, wherein the connecting means is formed by forming the spring hooks (13a), (12b) on the head drive 13 and the FF / REW lever 20 and fixed to both ends of the spring (21) FF / REW gear release when playing on headphone stereo mechanism. 3. The FF / REW gear during the play of the headphone stereo mechanism according to claim 2, wherein the double acting assistance means is a spring 22 having both ends fixed to the pair of shafts 25 and an intermediate part contacting the shaft 6a. Release device.