KR970001993B1 - Cassette housing driving apparatus of magnetic record player - Google Patents

Abstract

A cassette housing driving apparatus in which a driving force switch device is installed in a gear train so that the driving force is exclusively connected when a cassette loaded. The housing driving apparatus has a power relay element which transmits the power of a capstan motor(17) to reel tables(8,9); a connection element which connects or disconnects the power relay element; and transmission element which transmits the rotational force of the power relay element to the cassette housing. The manufacturing cost of the player is reduced and the assemblage thereof is simple.

Description

Cassette housing driving device of magnetic record player

1 is a deck plan view of the cassette housing driving apparatus of the present invention is installed.

2 is a longitudinal sectional view of the cassette housing driving apparatus of the present invention.

Figure 3 is an exploded perspective view of the main portion of the cassette housing drive device of the present invention.

4a, b is a rear view showing the operation of the cassette housing drive device of the present invention,

a is a rear view showing a state in which power is cut off to the cassette housing side;

b is a rear view showing a state in which power is connected to the cassette housing side;

* Explanation of symbols for main parts of the drawings

1: base plate 7: function plate

7a: Operating groove 8, 9: Reel table

13: idler input gear pulley 17: capstan fur

30: relay gear 30a: inclined portion

31: relay gear lifting operation arm 31b: operating pin

31a: inclined contact portion 32: spring

40: gear drain

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette housing driving apparatus of a magnetic recording and reproducing apparatus. In particular, the cassette housing is driven by a driving force of a capstan motor for transferring a tape, and a power separating device is installed in an intermediate gear train to provide power during cassette loading. The present invention relates to a cassette housing driving apparatus of a magnetic recording and reproducing apparatus, which is connected to each other and blocks transmission of power in other modes.

The conventional V-Cal conveys the tape by the shaft and the pinch roller of the capstan motor, and rotates the reel table by the driving force of the capstan motor to wind the tape around the reel table.

In addition, although a device for driving a cassette housing cassette housing using a driving force of the capstan motor is known, a device for loading and unloading a cassette by a driving force of the capstan motor is based on an interlocking structure of several levers and gears. The configuration was complicated and the installation structure was disadvantageous for miniaturization.

The present invention has been made to solve the above-mentioned conventional defects.

In order to achieve the above object, the present invention is connected to or separated from the reel drive force transmission element for transmitting the driving force of the capstan motor to the reel table and the power relay element to rotate, and directly connected to the funnel plate to connect or disconnect the power relay element A cassette housing driving apparatus for a magnetic recording / reproducing device comprising a connection separating driving element and a transmission element for transmitting the rotational force of the power relay element to the cassette housing shaft.

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

1 is a plan view showing a V-Cal installed with a cassette housing driving apparatus of a magnetic recording / playback device according to the present invention. As shown in the drawing, the rotating head drum 2 protrudes upward from the rear portion of the base plate 1. The inclined post assembly 3 is installed in the loading guide holes 1a formed on both sides of the rotary head drum 2 so as to move on the loading guide holes 1a.

A pair of loading gears (4) and (5) are installed to be interlocked with each other in front of the rotating head drum (2) of the base plate (1), and the loading gears (4) and (5) of the articulated loading lever (6) One end is connected, and the inclined post assembly 3 is connected to the other end of the loading lever 6, respectively.

In the front part of the base plate 1, an idler assembly 11 for driving them is provided in the middle part of the supply reel table 8 and the take-up reel table 9.

The idler assembly 11 is an idler arm 12 rotatably installed on a shaft 11 'fixedly projecting downwardly to the bottom surface of the base plate 1, and an idler condensed on the same shaft 11'. The input gear pulley 13 and the idler 14 stuck to the front-end | tip part of the said idler arm 12 are comprised.

A function plate 7 is installed in the middle of the base plate 1, and a cam gear 15 that is rotated by the function plate 7 and drives the loading gear 4 to rotate is supplied to the table 8. It is installed adjacent to).

The cam gear 15 is attached to a shaft 15 fixed to protrude downward from the bottom surface of the base plate 1.

Based on the drawing of the base plate 1, a loading motor 16 is installed at the right rear end thereof, and a capstan motor 17 and a pinch roller assembly 18 are installed adjacent to the loading motor 16. A gear train 21 is arranged for transmitting power to drive the pinch roller assembly 18 and the function plate 7.

The gear train 21 includes a worm 22 coupled to the shaft of the loading motor 16, first to fifth electric gears 23, 24, 25, 26, and 27. And a function plate driving gear 28 that meshes with the fifth electric gear 27 to drive the function plate 7.

The pulley 19 fixed to the shaft 17 ′ of the capstan motor 17 and the input gear pulley 13 of the idler assembly 11 are connected by a belt 20.

The bottom of the base plate (1) of the BC-deck portion is the cassette housing (not shown) to the power of the input gear pulley 13 of the idler assembly 11 that rotates by the driving force of the capstan motor 17 in accordance with the present invention Driving force relay means for transmitting to the side is provided.

The driving force relay means is a power relay that is connected or separated from the reel driving force transmission element that transmits the driving force of the capstan motor 17 to the reel tables 8 and 9, as shown in FIGS. Element, a connection separating drive element which is directly linked to the function plate 7 to connect or disconnect the power relay element, and a transmission element which transmits the rotational force of the power relay element to the cassette housing side.

In one specific embodiment, the driving force relay means is a relay gear 30 for transmitting the rotational force of the input gear pulley 13 of the idler assembly 11 to the cassette housing shaft to drive the cassette housing, and the relay gear A spring 32 that is inserted into the shaft 30 'of the 30 to elastically support the relay gear 30 downward, and a relay gear lifting operation arm that is attached to the base plate 1 and lifts the relay gear 30; (31) and a function plate (7) for operating the relay gear lifting operation arm (31).

The lower surface of the base plate 1 is fixed so that the shaft 30 'protrudes downward and is positioned adjacent to the input gear pulley 13, and the spring 32 is inserted into the shaft 30' from below. , The relay gear 30 meshing with the input gear pulley 13 is inserted, and the washer 30b is fixed to the lower end of the shaft 30 'so that the relay gear 30 is lowered by the elasticity of the spring 32. Elasticity is supported.

The relay gear 30 has a conical inclined portion (30a) is formed at the bottom.

The relay gear lifting operation arm 31 is attached to a shaft 31 'fixed to protrude downward from the bottom surface of the base plate 1.

The relay gear lifting operation arm 31 is in contact with the inclined portion 30a of the relay gear 30 at the tip portion thereof, and an inclined contact portion 31a is formed to push the relay gear 30 upward. The operation pin 31b is formed.

The gear train 40 is sixth, seventh, and seventh which are respectively fixed to the shafts 41 ', 42', 43 ', and 44' protruding downward from the bottom surface of the base plate 1; 8 is composed of electric gears (41), (42), (43) and cassette housing drive gear (44).

The function plate 7 is provided with a relay gear lifting operation arm operating groove 7a in which the operating pin 31b of the relay gear lifting operation arm 31 is inserted and brought into contact with each other.

In the cassette housing driving apparatus of the present invention as described above, in the eject mode, the power of the capstan motor 17 is connected to the cassette housing shaft to drive the cassette housing, and when the tape cassette is taken out again, an unloading condition (ULC) mode. The power is separated and the housing power transmission system is separated when the cassette is inserted in the ULC mode, so the insertion force of the cassette is reduced, and the damage of the components is prevented and the insertion feeling is improved even when the impact is inserted. .

When the cassette is inserted, the cassette housing is driven by the driving force of the capstan motor 17 by reversing the loading motor 16 so that power is connected when the cassette is inserted. When the cassette is completely seated, the power of the capstan motor 17 is separated by rotating the loading motor 16 forward and moving back to the ULC mode. Hereinafter, the operation of the present invention will be described in more detail as follows.

FIG. 4A illustrates the ejection state, in which a relay gear 30 provided between the input gear pulley 13 and the sixth electric gear 41 of the idler assembly 11 is input gear pulley 13. ) And the sixth electric gear 41.

In this state, when the cassette (not shown) is inserted into the cassette housing in the eject mode, the capstan motor 17 starts to rotate as the cassette insertion detecting switch installed in the cassette housing senses. Since the pulley 19 and the input gear pulley 13 coupled to the shaft 17 'of the capstan motor 17 are connected by the belt 20, they rotate together, and the rotational force of the input gear pulley 13 is a relay gear. 30, the sixth electric gear 41, the seventh electric gear 42, and the eighth electric gear 43 rotate together, such that the cassette housing drive gear 44 rotates.

When the cassette housing drive gear 44 rotates as described above, the cassette housing is driven by this rotational force, and the cassette is seated on the supply reel table 8 and the take-up reel table 9 inside the deck.

As such, when the cassette is seated inside the deck, the loading gear 16 starts to drive and its driving force is the worm 22, the first, second, third, and fourth electric gears 23, 24. , (25), (26), the pinch roller compression gear 27 and the function plate drive gear 28 is rotated in this way as the function plate drive gear 28 is rotated in this is engaged with the input gear portion (7b) The function plate 7 is moved to the left side as shown in FIG. 4 (a) to (b).

When the function plate 7 moves as shown in FIG. 4 (b), the relay gear lifting operation arm inserted into the relay gear lifting operation arm operating groove 7a of the function plate 7 as the operation pin 31b. As the 31 rotates counterclockwise about the shaft 31 ', the inclined contact portion 31a of the relay gear lifting operation arm 31 pushes the inclined portion 30a of the relay gear 30 and thus relays. As the gear 30 moves upward, the power connection between the input gear pulley 13 of the idler assembly 11 and the fourth electric gear 41 is interrupted, and the capstan motor 17 rotates thereafter. The driving force is not transmitted to the cassette housing side.

After that, when the function plate 7 moves further to the left by the driving force of the loading motor 16, the tape is loaded.

As described above, the present invention provides a housing driving apparatus using a capstan motor as a driving source, the relay gear 30 connecting and disconnecting the driving force in the middle of the gear drive train, and the relay gear for elevating and operating the relay gear 30. Since the driving force is connected and separated by a simple configuration in which the elevating operation arm 31 is installed, there is an advantage of reducing the cost and assembly of the product, and elevating the inclined portion 30a of the relay gear 30 to the relay gear. The relay gear 30 is driven by pushing to the inclined contact portion 31a of the operating arm 31, and the relay gear 30 is doubled back by the spring 32 to smoothly connect and disconnect the power with a small force. There is an advantage to this.

In addition, when inserting the cassette for regeneration, the insertion force of the cassette in which the power transmission system of the housing is separated is reduced, and the damage of the components is not only prevented during insertion, but also the insertion feeling is improved, thereby improving the reliability of the product. There is this.

Claims (8)

A power relay element that is connected to or separated from a reel driving force transmission element that transmits the driving force of the capstan motor 17 to the reel tables 8 and 9 and rotates directly to the function plate 7 to connect the power relay element. Or a separating and separating driving element for separating and a transmission element for transmitting the rotational force of the power relay element to the cassette housing side. 2. The magnetic relay element as claimed in claim 1, wherein the power relay element is a relay gear 30 which is fixed to the base plate 1 and connected or separated from the gear part of the idler input gear pulley 13, which is a reel driving force transmission element. A cassette housing driving device of a record player. The method of claim 1, wherein the connection separating drive element is characterized in that it comprises a relay gear lifting operation arm 31 which is connected to the function plate (7) to connect the relay gear 30 to the input gear pulley (13). A cassette housing driving device of a magnetic recording player. 2. The magnetic element of claim 1, wherein the connection separating drive element includes a spring 32 inserted into the shaft of the relay gear 30 to separate the relay gear 30 from the input gear pulley 13. A cassette housing driving device of a record player. 2. The cassette housing driving apparatus of claim 1, wherein the transmission element is a gear train (40) for transmitting power of the relay gear (30) to a cassette housing. 3. The cassette housing driving apparatus of claim 2, wherein the inclined portion (30a) of the relay gear (30) is formed. According to claim 3 or 6, wherein the relay gear lifting operation arm 31 is that the operation pin 31b and the inclined contact portion 31a which is inserted into the operation groove 7a of the function plate 7 is formed. A cassette housing driving device for a magnetic recording / playback device. The method of claim 3, wherein the disconnection driving element is configured to separate the relay gear 30 from the input gear pulley 13 and the electric gear 14 in the cassette insertion mode. A cassette housing driving device for a magnetic recording / playback device.