JPH082832Y2 - Tray housing drive for digital audio tape recorder - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital audio tape recorder, and more particularly to a cassette tape transfer and mounting apparatus suitable for a tray housing system.

[0002]

2. Description of the Related Art A conventional housing driving device of a digital audio tape recorder (hereinafter referred to as DAT) operates to transfer and load a cassette tape by using two motors and three switches. Since the complexity of the configuration increases the number of work processes, the productivity of the product is reduced, the size of the product becomes large and it is difficult to miniaturize, and the production cost of the product increases due to waste of material cost and labor cost. There was a point.

[0003]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the above-mentioned conventional problems, and an object of the present invention is to transfer and mount a cassette tape in a DAT by driving a single cam gear. Since the operation is completed by the upper gear of the product and the two switches can work together, the number of parts and the number of assembly steps can be reduced, which can reduce the production cost of the product and at the same time simplify the product. An object of the present invention is to provide a DAT tray housing drive device that can be manufactured in a small size.

[0004]

The features of the present invention for attaining the above-mentioned object are that the power is transmitted from the motor in the tray housing of the DAT for reproducing the signal recorded on the cassette tape. A cam gear for operating the skater, a housing drive means including an upper gear that is interlocked with the cam gear and operates the row drawer,
Double speed means for operating the transfer speed of the upper drawer faster than the transfer speed of the row drawer, mounting means for transferring the holder up and down by the operation of the skater to perform the cassette tape mounting operation, and the row drawer And a switching means for allowing the operation of the skater to be automatically completed.

[0005]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. First, FIG. 1A, FIG. 1B and FIG.
FIG. 3 is a schematic view for explaining a driving means of the tray housing driving device according to the present invention.
The transmission pulley 3 and the pulley 5 of the motor 2 provided at the lower part of the above are connected to the belt 4, and the drive gear 6 of the pulley 5 meshes with the cam gear 7. A semicircular upper gear 9 having an elastic piece 8 formed on one side is connected to the upper surface of the cam gear 7 by a hook 10 shown in FIG. The elastic piece 8 of 9 is supported, and the upper gear 9 is locked by the fixing pin 12 of the cam gear 7 in the opposite direction of the elastic piece 8 so that it can rotate at the same time as the cam gear 7. A rack 14 is formed at a predetermined portion of the row drawer 13 and meshes with the upper gear 9, and a switch 15 is provided on one side of the central portion of the chassis 1 by switching means so that the transfer of the row drawer 13 is completed. An operating piece 16 is projected from one end of the side surface of the drawer 13 so that it can be easily operated with the switch 15 after the row drawer 13 is moved.

FIGS. 3 and 4 are schematic views for explaining a speed doubling means of the tray housing driving device according to the present invention. A rack 17 is formed on the bottom of the row drawer 13 and a bottom of the upper drawer 18. Further, a rack 19 is also formed, and these racks 17 and 19 are engaged with the small pinion 21a and the large pinion 21b of the double pinion 20, respectively, so that the transfer speed of the upper drawer 18 can be made faster than that of the low drawer 13.

[0007] Figures 5 and 6 is Ru schematic der for explaining the slider operating state of the tray housing the drive device according to the present invention. The slider 22 is the bottom of the row drawer 13.
The front end is slidably engaged. Of slider 22
Both sides are connected to the chassis 1 by springs 23. Anro
Of the drawers 13 with the loading completed
Cassette for placing the cassette tape on the tip side
An opening is formed between the tape mounting portion and a holder 28 described later.
Is formed. The slider 22 covers this opening and
Between the cassette tape placement section and the holder 28 described above,
The cassette tape 24 moving in the direction is prevented from falling into the opening .

7A, 7B to 9A,
FIG. 3B is a schematic view for explaining the mounting means of the tape recorder according to the present invention, in which the skater 25 is coupled to the bottom surface of the cam gear 7, and the moving piece 26 of the skator 25 is formed on the bottom surface of the cam gear 7. The linear movement of the skater 25 is easily performed by the rotation of the cam gear 7 which is inserted in the cam groove 7 ′, and the operating piece 30 of the skater 25 is contacted by the switching means so that the movement of the skater 25 is completed. Switch 29 is provided on the chassis 1, and the cam shaft 2 fixed to the chassis 1
In 7, the moving piece 20 of the skater 25 is connected, and the vertical shaft 1 ′ of the chassis 1 is connected to the moving shaft 28 ′ of the holder 28 on which the tape 24 is mounted.

According to the present invention, when the tray housing driving device is unloaded, power is externally applied to the driving means to rotate the transmission pulley 3 while the motor 2 under the chassis 1 is rotated counterclockwise. A pulley 5 connected by the transmission pulley 3 and the belt 4
Is rotated and the cam gear 7 meshed with the drive gear 6 of the pulley 5 is rotated clockwise . At this time, the upper gear 9 provided on the upper surface of the cam gear 7 meshes with the rack 14 of the row drawer 13 to exert a reaction force and generate an impact. This is because the elastic piece 8 of the upper gear causes the cam gear 7 to move. Protrusion 1
While being supported by 1, the predetermined elastic force absorbs the impact between the fixing pieces 12 and the upper gear 9 rotates smoothly to allow the low drawer 13 to rotate.
Is driven.

As shown in FIG. 3, the double gear 20 is driven by the small pinion 21a of the speed doubling means which is engaged with the rack 17 of the row drawer 13 while the row drawer 13 is driven.
The upper drawer 18 is transferred faster than the row drawer 13 by the rack 19 meshed with the large pinion 21b by the rotation of the double pinion 20, so that the moving distance of the upper drawer 18 is longer than that of the row drawer 13 In the state shown in FIG. 4, the unloading is completed and the unloading is completed while the operating piece 16 projecting from the side surface of the row drawer 13 operates the switch 15.

On the other hand, with the unloading of the row drawer 13 completed , the front panel of the tape recorder
The cassette tray of the row drawer 13 protruding toward the front side
The cassette tape 24 is placed on the loop placing portion. Later <br/>, rotating the motor 2 which was rotating press another mode selection button (not shown) counterclockwise to clockwise, it is loaded in the opposite acting as unloading. That is, the double pinion 20 is rotated while the row drawer 13 is driven by the motor 2 which is rotated in the clockwise direction, and the pitch diameter ratio of the small pinion 21 and the large pinion 21b is proportional to the constant size in the double pinion 20. As a result, even if the transfer distance of the row drawer 13 is small due to the rotation amount of the upper gear 8, the upper drawer 18 has a large transfer distance while the cassette tape 2
4 is transferred into the holder 28 .

The cassette tape 24 is of the row drawer 13.
After the cassette tape placement section, move it on the slider 22.
Move to the holder 28. That is, the cassette table
The cup 24 is transferred without dropping from the opening. Mosquito
When the set tape 24 is transferred into the holder 28 , FIG.
(A), the upper gear 9 rotates idly while passing through the state in which it meshes with the rack 14 of the low drawer 13, and the rotation of the cam gear 7 is continuously maintained. The skater 25 is located outside the cam groove 7'formed on the bottom surface.
The moving hole 25 'of FIG. 9 moves linearly under the guidance of the cam shaft 27, and is moved as shown in FIG.
(A) is moved. At this time, the linear motion of the skater 25 described above causes the skator 25 to move linearly.
As shown in FIG. 5, the mounting means of the tray housing driving device lowers the moving shaft 28 ′ of the holder 28, on which the cassette tape 24 is mounted, along the vertical hole 1 ′ of the chassis 1 to perform the mounting operation of the cassette tape 24, and the skater 25. operating piece 30 of the contact with the switch 29, the motor
2 is stopped, and the mounting of the cassette tape 24 is completed.

Then, as described above, the cassette tape 24
After the tape has been loaded, the cassette tape 24
The signal recorded in is reproduced. Cassette tape 24
When ejection is rotates the cam gear 7 to rotate the motor 2 in the counterclockwise direction by pressing again the mode selection button, the unloading of the aforementioned tray housing drive low drawer 13 and the upper drawer 18 Ru transported. As shown in FIGS. 5 and 6 , the spring 23 is pulled.
While being extended, the slider 22 and the row drawer 13
Move to close the opening. This allows the holder 28
After the cassette tape 24 inside has come out of the holder 28,
Move on the slider 22 and
Move to the cassette tape loading section. That is, the cassette table
The tape 24 is transferred without falling from the opening, and the cassette tape 24 and other parts are prevented from being damaged.

[0014]

According to the tray housing the drive device of the DAT by the present invention as described above, according to the invention] causes the tray housing of a conventional digital audio tape recorder to perform transported mounting operation in two motors and three of switches The complexity of the existing structure is improved, and the operation of the cam gear and the upper gear to perform the transfer mounting operation with one motor and two switches reduces the number of parts and assembly man-hours and saves the production cost of the product. In addition, it has an advantage that it is extremely advantageous for miniaturization of products.

[Brief description of drawings]

1A and 1B are views showing an operating state of a driving means in a tray housing driving device according to the present invention.

FIG. 2 is a view showing an operating state of driving means in the tray housing driving device according to the present invention.

FIG. 3 is a view showing an operating state of a double speed means in a tray housing driving device according to the present invention.

FIG. 4 is a view showing an operating state of a speed doubler in a tray housing driving device according to the present invention.

FIG. 5 is a view showing an operating state of a slider in the tray housing driving device according to the present invention.

FIG. 6 is a view showing an operating state of a slider in the tray housing driving device according to the present invention.

7A and 7B are views showing the operating state of the seating means in the tray housing driving device according to the present invention.

8A and 8B are views showing the operating state of the seating means in the tray housing driving device according to the present invention.

9A and 9B are views showing the operating state of the seating means in the tray housing driving device according to the present invention.

[Explanation of symbols]

 1 Chassis 1'Vertical Hole 2 Motor 3 Electric Pulley 4 Belt 5 Pulley 6 Drive Gear 7 Cam Gear 7'Cam Groove 8 Elastic Piece 9 Upper Gear 10 Hook 11 Protrusion 12 Fixing Piece 13 Rack Drawer 14 Rack 15 Switch 16 Actuating Piece 17, 19 Rack Gear 18 Top Drawer 20 Small Pinion 21 Large Pinion 22 Slider 23 Spring 24 Tape 25 Skator 25 'Moving Hole 26 Moving Piece 27 Cam Shaft 28 Holder 28' Moving Shaft 29 Switch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-90056 (JP, A) Actually opened 62-195249 (JP, U) Actually opened 63-78335 (JP, U) Actually opened 2- 55430 (JP, U) Actually open 2-149147 (JP, U)

Claims (4)

[Scope of utility model registration request] 1. In a tray housing of a digital audio tape recorder for reproducing a signal recorded on a cassette tape, a cam gear for transmitting power from a motor to operate a skater, and a row drawer operating in conjunction with the cam gear. a housing drive means consisting of an upper gear, a speed means for actuating faster transport speed of the upper portion <br/> drawer than transport speed of the low drawer, the holder in operation of the Sukeita the upper, cassette tape is transferred to the lower 2. A tray housing drive device for a digital audio tape recorder, comprising: mounting means for performing a mounting operation; and switching means for automatically completing the operations of the row drawer and the skater. 2. A semi-circular upper gear having an elastic piece formed on the upper surface of the cam gear so that a predetermined elastic force is applied to the upper surface of the cam gear is coupled by a hook, and the elastic piece of the upper gear protrudes from the cam gear. 2. The tray housing driving device for a digital audio tape recorder according to claim 1, wherein the tray housing is supported by one piece to absorb an impact. 3. The mounting means according to claim 1, wherein the moving pin of the skater is inserted into the cam groove of the cam gear, and the moving hole of the skater is linearly transferred by receiving the guide of the cam shaft. Tray housing drive for digital audio tape recorder. 4. The digital audio tape recorder according to claim 1, wherein the switching means is provided with a switch for contacting the operation pieces of the row drawer and the skater to complete the operation. Tray housing drive.