JPH0728637Y2 - Recording / playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in the following order.

A. Industrial fields of use B. Overview of the device C. Conventional technology D. Problems to be solved by the device E. Means for solving the problem F. Action G. Example G ₁ ． Front panel G ₂ . Printed circuit board G ₃ . Chassis G ₄ . Slide plate G ₅ ． Cartridge holder G ₆ . Magnetic head device G ₇ ． Damper mechanism G ₈ ． Outermost track detection mechanism G ₉ . Cover G ₁₀ . Function H. Effect of the invention A. Industrial field of application The present invention relates to a flattened and compact recording / reproducing apparatus.

B. Outline of the Invention The present invention is a recording / reproducing apparatus in which a printed circuit board is provided so as to be superposed on a chassis, and a connector is provided at an end portion of the printed circuit board. The space for mounting parts on the chassis is widened, and the recording / reproducing apparatus is made flat and compact.

C. Conventional Technology For example, in a recording / reproducing apparatus using a disc cartridge, a component mounting space is formed on one side of the chassis, and a signal is transmitted between a slide plate for loading the disc cartridge into this component mounting space, a cartridge holder and a disc. A magnetic head device for transmitting is provided. A printed circuit board is attached to the other side of the chassis so as to be superposed on the chassis, and electronic parts are mounted on the printed circuit board. The printed circuit board is larger than the chassis, and a connector for transmitting a signal to the outside is provided at a protruding end portion of the printed circuit board.

D. Problems to be solved by the device However, the number of parts to be mounted increases as the equipment becomes more multifunctional in recent years. There was a situation in which the size of the device had to be increased because it had to be attached to form a sub-component mounting space.

Therefore, an object of the present invention is to provide a recording / reproducing apparatus which requires a large space for mounting parts on a chassis but does not increase the size of the apparatus.

E. Means for Solving Problems The structure of the present invention for achieving the above object is a recording / reproducing apparatus in which a printed circuit board is provided so as to be superposed on a chassis, and a connector is provided at an end of the printed circuit board.
The chassis may be extended to the upper surface of the connector.

F. Function Therefore, the mounting space of parts on the chassis is wide, but
The chassis does not grow in length or thickness because the chassis is extended on the top of the connector.

G. Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 show an embodiment in which the present invention is applied to a disk drive device which is one of recording / reproducing devices.

G ₁ . Front Panel (FIGS. 1 and 2) The front panel 1 is attached to the chassis 4 and arranged in front of the disk drive device. A disc insertion opening 1a is formed on the front panel 1 slightly above the center thereof, and the disc cartridge 2 is inserted and pulled out from the disc insertion opening 1a. A pilot lamp display portion 1b and an eject button hole 1c are provided below the disc insertion opening 1a.

G ₂ . Printed Circuit Boards (FIGS. 1 to 4) The printed circuit boards 3a and 3b are fastened to the lower surface of the chassis 4 with screws 14 and are arranged so as to overlap with the chassis 4.
In this embodiment, two printed circuit boards 3a and 3b are provided, and one printed circuit board 3a is mounted with various electronic parts and a coil portion 9a of the flat motor 9 is provided. Further, a stator yoke plate 9b is mounted so as to be arranged at a position facing the coil portion 9a. Various electronic components are mounted on the other printed circuit board 3b, and connectors 13a and 13b are fixed to the end portion farthest from the front panel 1, as shown in detail in FIG. . The connectors 13a and 13b electrically connect to external devices.

G ₃ . Chassis (FIGS. 1 to 4) The chassis 4 includes a main chassis portion 7 and side portions 8 integrally formed with the main chassis portion 7.

The main chassis part 7 is formed in a substantially flat plate shape, and an extension part is formed at the opposite end of the front panel 1 so as to be raised one step higher.
7a, 7b are provided, the extension 7a, 7b is the connector 13a,
It is located on the upper surface of 13b. That is, the main chassis portion 7 is provided so as to extend to the upper surfaces of the connectors 13a and 13b. Further, the extension parts 7a and 7b are not provided between the two connectors 13a and 13, and the motor 48 of the magnetic head device 43 described below is fixedly arranged on the side part 8 in this space.

The side portion 8 is provided upright on the peripheral edge of the main chassis portion 7 excluding the front panel 1 side. A component mounting space 19 is formed on the main chassis portion 7 surrounded by the side portions 8, and the component mounting space 19 is provided with components. For example, the slide plate 5, the cartridge holder 6, the magnetic head device 43, etc. are provided, and the damper mechanism 34 and the track outermost peripheral detection mechanism 58 are provided on the other extension 7b in the component mounting space 19 on the one extension 7a. Component mounting space 19
Although not shown, each is provided with an auto eject mechanism.

The details will be described below.

On the lower surface side of the main chassis portion 7, the rotor portion 9c of the flat motor 9 is fixed, and the chucking portion 10 is fitted on the rotary shaft 9d of the flat motor 9 protruding into the component mounting space 19. Pin portions 11 are provided at four locations around the chucking portion 10 and slide lock means 13 for restricting the movement of the slide plate 5 is attached. The slide lock means 13 has a support shaft for the main chassis portion 7 The shaft hole of the trigger arm 15 is inserted into this support shaft that is erected. The trigger arm 15 has a rotation support portion, in which the shaft hole is formed, and a cylindrical portion connected via an arm portion, and a lock plate is provided at a lower end of the cylindrical portion. This trigger arm 15 has a front panel 1 with a torsion coil spring 16.
It is biased to the side (clockwise). Furthermore, disk cartridges 2 are provided at four locations centering on the chucking section 10.
Positioning pins 17 (two of which are formed by using the pin portion 11) for locating are set up. The positioning pin 17 has a flat top surface on the rear side in the disc insertion direction and a conical top surface on the front side in the disc insertion direction.

Guide grooves 18 are formed on the opposing side portions 8 at positions facing each other, and guide portions 31 of the cartridge holder 6 are arranged in the guide grooves 18, so that the cartridge holder 6 moves in the vertical direction (in the sliding direction of the slide plate 5). It is provided so as to be movable only in the vertical direction.

G ₄ . Slide Plate (FIGS. 1 and 2) The slide plate 5 has elongated holes 22 at four locations.
The pin portion 11 is inserted in 22 and the slide plate 5 is slidably provided within a range in which the pin portion 11 can move within the elongated hole 22. Slide plate 5 and the main chassis portion 7
A coil spring 23 is provided between and, and the slide plate 5 is biased toward the front panel 1 side. The slide plate 5
Both sides of each are bent upward, and a guide surface 24 that is inclined with respect to the sliding direction is provided at this bent portion.
Further, an engaging pin 25 that engages with the trigger arm 15 is provided on the lower surface of the slide plate 5, and one end projects toward the front panel 1 side, and this projecting end is the eject button.
Makes up 26. The eject button 26 is arranged in the eject button hole 1c.

G ₅ . Cartridge Holder (FIGS. 1 to 3) The cartridge holder 6 has both sides bent downward, and the tip end side of this bent portion is bent further inward to form a cartridge storage chamber 28. The cartridge holder 6 has a dowel part 29 for supporting the disc cartridge 2 stored in the cartridge storage chamber 28 and a shutter opening means 30 for opening the shutter 70 of the disc cartridge 2. Two pairs of guide portions 31 are provided on both sides of the cartridge holder 6. The guide portion 31 is brought into contact with the guide surface 24 of the slide plate 5, and a pair of the guide portions 31 are further arranged in the guide groove 18 of the side portion 8, and the guide portion 31 of the cartridge holder 6 is guided by the guide portion 31. Face 24
It is moved in the vertical direction (substantially perpendicular to the sliding direction of the slide plate 5) while being regulated by. That is, the cartridge holder 6 is displaced from the cartridge insertion opening 1a to the unloading position A where the disc cartridge 2 can be inserted into and withdrawn from the cartridge storage chamber 28 and the loading position B where the disc cartridge 2 is in a recordable / reproducible state. . The displacement from the unloading position A to the loading position B is such that when the disc cartridge 2 is inserted into the cartridge storage chamber 28, the trigger arm 15 rotates counterclockwise to disengage the slide lock means 13 and the slide plate 5 becomes a spring force. This is performed by sliding the slide plate 5 toward the front panel 1 and moving (downward) the guide portion 31 of the cartridge holder 6 while being regulated by the guide surface 24 by the slide of the slide plate 5. When the eject button 26 is pressed, the displacement from the loading position B to the unloading position A is
This is performed by moving the slide plate 5 to the side opposite to the front panel 1 and moving (upward) the cartridge holder 6 while the guide portion 31 of the cartridge holder 6 is restricted by the guide surface 24. When the movement to the unloading position A is completed, the lock plate of the trigger arm 15 engages with the engagement pin 25 and the cartridge holder 6
Are held in the unloading position A.

Further, a notch 32 is formed at the front of the disc cartridge 2 in the disc insertion direction, and the magnetic head 54 above the magnetic head device 43 is arranged in the notch 32 so as to face it.
At the end of the cutout portion 32, a standing portion 33 that rises on the side opposite to the chassis is provided at a facing position, and the upper end of the standing portion 33 is provided higher than the head arm 53 that supports the magnetic head 54. .

G ₆ . Magnetic Head Device (FIGS. 1 to 3) In the magnetic head device 43, a long hole 45 is formed in one side portion of the head base 44, and a support shaft 46 fixed to the chassis 4 is formed in the long hole 45. Has been inserted. A pin 47 is projected on the other side of the head base 44, and the pin 47 is attached to the rotary shaft 49 of the motor 48.
Is inserted into the thread groove 50 of the. When the motor shaft 49 rotates, the pin 47 moves along the thread groove 50, and the head base 44 slides on the chassis 4 along with the support shaft 46 by the drive of the motor 48.

A leaf spring 51 is fixed to the head base 44 with a screw 52, and a tip end portion of the leaf spring 52 is attached to one end side of a head arm 53. An upper magnetic head 54 is fixed to a free end of the head arm 53, and a lower magnetic head 54 is fixed to a head base 44 which is a position facing the upper magnetic head 54. The pair of magnetic heads 54 is a head base.
The disc cartridge 2 is displaced in the radial direction by sliding 44. One end of a coil spring 55 is hooked on the head arm 53 so that the magnetic head 54 is pressed against the disk cartridge 2. Further, an abutting portion 56 projects laterally at approximately the center of the head arm 53, and the abutting portion 56 abuts the cartridge holder 6 at the unloading position A of the cartridge holder 6 to position the magnetic head 54 in the non-pressing position. And the loading position B of the cartridge holder 6
Then, the magnetic head 54 is separated from the cartridge holder 6 and positioned at the press contact position.

It is necessary to electrically connect a lead wire (not shown) or the like between the magnetic head (54) and the printed board (3b). Since the lead wire guided from the magnetic head (54) moves together with the head base (44), it is necessary to arrange it so as not to interfere with other parts when moving, but the damper mechanism (34)
Since the outermost track detection mechanism (58) and the outermost track detection mechanism (58) are arranged on the extension portion (7a) and a space is provided near the head base (44), the lead wire can be wired without interfering with other components.

G ₇ . Damper Mechanism (FIGS. 1, 2, and 4) The damper mechanism 34 has an extension portion 35 extending in front of the slide plate 5, and the extension portion 35 is a side portion of the chassis 4. 8
It is distributed alongside. A spur tooth portion 36 is formed at the tip of the extending portion 35, and a gear 38 of a damper 37 meshes with the spur tooth portion 36. A protrusion (not shown) adjacent to the side portion 8 is provided on the opposite side of the extending portion 35 from the flat tooth portion 36 so that the mesh between the flat tooth portion 36 and the gear 38 cannot be disengaged.

The damper 37 is of a rotary type, and an enclosed oil chamber is formed in a main body 40 fixed to the chassis 4, and a rotary shaft 41 having a resistor is arranged in the oil chamber. One end of the rotary shaft 41 is projected to the outside, and the gear 38 is fixed to this projected portion.

Thus, the gear 38 is rotated by the movement of the slide plate 5, and the damper action is given to the slide plate 5 and the cartridge holder 6 which is moved by the slide plate 5.

G _8. Outermost track detection mechanism (Figs. 1, 2 and 4
(Fig.) Outermost track detection mechanism 58 is a detection plate 59 and an optical sensor 60 that detects the intrusion of the detection plate 59 into the detection space.
It consists of and. The detection plate 59 is attached to the head base 44 and moves together with the head base 44, and when the magnetic head 54 reaches the outermost track position of the track, the detection plate 59 enters the detection space and the optical sensor 60 detects the outermost track position of the track. To do. The mounting position of the optical sensor (60) needs to be adjusted in the moving direction of the head base (44), but since the optical sensor (60) is provided on the extension portion (7a) and there is enough space, this adjustment is required. It's easy.

G ₉ . Cover (FIGS. 1 to 3) A cover 61 is formed of a shield plate and has a box shape with one surface opened, and covers the magnetic head device 43, the cartridge holder 6 and the like. The clearance d between the upper portion of the cover 61 and the non-chassis side of the magnetic head device 43 and the cartridge holder 6 is formed as small as possible so that the disk drive device is flattened.

G ₁₀ . Operation The operation of the disk drive device will be described below.

When the disc cartridge 2 is inserted into the cartridge insertion opening 1 a, the disc cartridge 2 is inserted into the cartridge storage chamber 28 of the cartridge holder 6. When it is completely inserted into the cartridge storage chamber 28, the trigger arm 15 is pivotally disengaged by the locking pin 25, and the slide plate 5
Moves toward the front panel 1 by the spring force of the coil spring 23. Then, the slide of the slide plate 5 displaces the cartridge holder 6 from the unloading position A shown by the solid line in FIG. 3 to the loading position B shown by the chain double-dashed line in FIG. on the other hand,
When the eject button 26 is pressed from this state, the slide plate 5 moves in the direction opposite to the front panel 1 against the spring force of the coil spring 23. By the movement of the slide plate 5, the cartridge holder 6 is displaced from the loading position B to the unloading position A, and the disc cartridge 2 is ready to be pulled out.

Thus, in the disk drive device, the chassis 4
Even if the number of parts is large because the upper part mounting space 19 is configured to be large and the number of parts is large, the length l of the device does not become long, and the thickness d of the device does not become thick while the multifunction of the device is achieved. It can be used for flattening and compactness.

In this embodiment, the component mounting space 19 of the extension 7a, 7b
The damper mechanism 34, the track outermost periphery detection mechanism 58, and the auto-eject mechanism are provided in, but it goes without saying that the mounted components are not limited to these. But,
Since the height of the component mounting space 19 is lower than that of other parts, a component having a low height is mounted.

H. Effect of the Invention As described above, according to the present invention, in the recording / reproducing apparatus in which the printed circuit board is provided so as to be superposed on the chassis, and the connector is provided at the end of the printed circuit board, the chassis is placed on the upper surface of the connector. Since it is provided by being extended, the component mounting space on the chassis is widened, and the recording / reproducing apparatus can be made flat and compact.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a perspective view of a disk drive device, FIG. 2 is an exploded perspective view of the disk drive device, and FIG. 4 and 5 are partial perspective views of the disk drive device. 3a, 3b …… Printed circuit board, 4 …… Chassis, 13a, 13b ……
connector.

Claims (1)

[Scope of utility model registration request] 1. A printed circuit board is provided so as to be superposed on a chassis, and an extension part higher than the extension part is provided at an end part of the chassis, and the upper surface of the extension part is used as a component mounting space. A recording / reproducing apparatus characterized in that a connector for connecting to an external device is provided at an end portion on the chassis side, and the connector is arranged in a space below the extension portion.