KR100294442B1 - Recording and reproducing apparatus for record carriers and buffers used in the apparatus - Google Patents

Abstract

A recording and reproducing apparatus using a disc as a recording medium in which a recording and reproducing unit is supported in a floating state through a plurality of buffer units and elastic members. The recording and reproducing apparatus includes a recording and reproducing unit mounted on the base through a cover member rotatably mounted on the base to cover the plurality of buffer units and the recording and reproducing unit. Between the lid member and the recording and reproducing unit, a leaf spring for biasing the recording and reproducing unit toward the base is mounted. When the lid member is in a position surrounding the recording and reproducing unit, the recording and reproducing unit is maintained at a position where the weight of the recording and reproducing unit and the elastic force of the cushioning means and the elastic force of the first elastic member are respectively balanced with each other. The shock absorbing unit supporting the recording and reproducing unit on the base has a vibration absorbing member and an elastic member fixed outside the vibration absorbing member. A support member is provided in which a recording and reproducing unit is arranged. Another elastic member constituting the shock absorbing unit is provided between the base and the supporting member to bias the lid member against the biasing force of the leaf spring.

Description

Recording and reproducing apparatus for recording medium and damper mechanism employed in such apparatus

1 is a perspective view showing a recording and reproducing apparatus according to the present invention;

2 is a plan view of the apparatus shown in FIG.

3 is a front view of the device shown in FIG.

4 is a left side view of the device shown in FIG.

5 is a rear view of the apparatus shown in FIG.

6 is a right side view of the device shown in FIG.

7 is a bottom view of the device shown in FIG.

8 is an enlarged perspective view of the device shown in FIG.

Fig. 9 is a right side view showing a casing constituting the main body of the recording and reproducing apparatus according to the present invention.

10 is a bottom view showing a lid support plate constituting the recording and reproducing apparatus according to the present invention.

11 is a left side view of the lid support plate shown in FIG.

Fig. 12 is a left side view showing the internal configuration of the recording and reproducing apparatus in the ejected state.

Fig. 13 is a left side view showing the internal configuration of the recording and reproducing apparatus in the stopped state.

Fig. 14 is a side view showing the internal configuration of the recording and reproducing apparatus in the stationary state.

Fig. 15 is a plan view showing the internal configuration of the mechanical casing of the recording and reproducing apparatus in the stop mode.

Fig. 16 is a plan view showing the internal configuration of the mechanical casing of the recording and reproducing apparatus in the reproducing mode.

Fig. 17 is a plan view showing the internal configuration of the mechanical casing of the recording and reproducing apparatus in the recording mode.

Fig. 18 is a plan view showing the cartridge holder of the recording and reproducing apparatus in the stationary and reproducing mode.

Fig. 19 is a plan view showing the cartridge holder of the recording and reproducing apparatus in the recording mode.

Fig. 20 is an enlarged schematic view showing the basic part of the arrangement for holding the upper lid of the recording and reproducing apparatus.

FIG. 21 is a front view showing a configuration for holding an upper lid of the recording and reproducing apparatus. FIG.

Fig. 22 is a plan view showing the main frame of the recording and reproducing apparatus.

Fig. 23 is a plan view showing an outer cover of the recording and reproducing apparatus.

24 is a front view showing an outer cover of the recording and reproducing apparatus.

25 is a front view showing a state of the upper lid in a sealed state.

Fig. 26 is a front view showing the state of the upper lid in the closed state.

27 is a front view showing a holding state of the top cover which is released;

28 is an enlarged perspective view showing the cartridge ejection mechanism.

Fig. 29 is a right side view showing the mounting state between the machine casing and the cartridge holder.

30 is a right side view showing the state of the cartridge holder rotating toward the machine casing.

Fig. 31 is a longitudinal sectional view showing the supporting structure of the machine casing.

Figure 32 is a longitudinal sectional view showing a shock absorbing unit used in the apparatus of the present invention.

33 is an enlarged plan view showing a member for suspending a cartridge holder;

34 is an enlarged plan view showing a member for suspending a cartridge holder;

35 is an enlarged side view showing a member for suspending a cartridge holder.

36 is a block circuit diagram showing a control unit of the recording and reproducing apparatus of the present invention.

37 is a flowchart showing an operating process of the recording and reproducing apparatus according to the present invention.

38 is a perspective view from above of a disc cartridge enabling information signal rewriting used in the recording and reproducing apparatus of the present invention.

39 is a perspective view from above of a replay-only disc cartridge used in the present invention.

40 is a perspective view from below of the disc cartridge shown in FIG. 39;

FIG. 41 is a perspective view from below of the disc cartridge shown in FIG. 39; FIG.

42 is a longitudinal sectional view showing a buffer unit used in the recording and reproducing apparatus of the present invention.

43 is a plan view showing a set screw constituting the shock absorbing unit.

FIG. 44 is a side view showing the set screw shown in FIG. 43; FIG.

FIG. 45 is a side view showing a portion of the axis constituting the shock absorbing unit shown in FIG. 43 in broken line; FIG.

* Explanation of symbols for main parts of the drawings

3: cartridge holder 8: battery casing

15: key input unit 28: play button

29: stop button 115: lock lever

116: release lever 200: magneto-optical disk

201: optical disk 205, 216: main cartridge body

206, 217: shutter member 220, 221: disc cartridge

302 cartridge release lever 303 pivot

331: first flange 331a: second flange

334 buffer

[Field of Invention]

The present invention relates to a recording and reproducing apparatus using a disk such as a magnetic-optical disk or an optical disk as a recording medium for an information signal. In particular, the present invention relates to an apparatus in which the recording and reproducing unit is supported in a floating state in the main body of the apparatus through a plurality of buffer units and elastic members.

[Description of Related Technology]

Up to now, recording and reproducing apparatus using magnetic-optical disks or optical disks as recording media for information signals have been developed. A magneto-optical disc or optical disc used as a recording medium for a recording and reproducing apparatus is embedded in the main cartridge body to form a disc cartridge and loaded in such a state in the recording and reproducing apparatus.

The recording and reproducing apparatus has an optical pickup and a magnetic head as a means for recording and reading an information signal on or from a magnetic recording medium. The magnetic pickup and the magnetic head are mounted on a casing provided in the main body of the apparatus to constitute the recording and reproducing unit. On the other hand, a disc cartridge having a magneto-optical disc or an optical disc as a recording medium is loaded at the cartridge loading position of the recording and reproducing apparatus so as to be positioned relative to the recording and reproducing unit associated with the recording and reproducing apparatus. By the disc cartridge loaded at the cartridge loading position, the information signal is recorded on the magnetic-optical disk or the information signal recorded on the magnetic-optical disk or the optical disk with the aid of the optical pickup and the magnetic head is reproduced.

When a shock is applied to the main body of the apparatus and vibration occurs in the recording and reproducing unit, it becomes impossible to record or reproduce the information signal on or from the recording medium. In other words, when the recording and reproducing unit vibrates, the optical pickup deviates from a position relative to the recording medium, making it impossible to track the recording track in which the light beam emitted by the optical pickup is formed on the recording medium, thus recording / reproducing the information signal. It becomes impossible to do. First of all, the recording information signals, information signals and information signals on the magneto-optical disk are recorded in order of contents. The table of contents information indicates an address indicating the recording position of the information signal recorded on the magneto-optical disk, and informs the information necessary for reading the recorded information. Information signals for which the related table of contents information is not recorded are not read. Thus, the track skip of the beam of rays scanning the recording track is disengaged from the pre-set recording track due to the vibration generated during the recording of the information signal or the recording of the information signal is completed, but related contents When the recording of information is not completed, the recorded information signal cannot be read.

In this form, especially in a portable recording and reproducing apparatus, the recording and reproducing unit is supported in a floating state on the main body of the apparatus via a plurality of buffer units. The shock absorbing unit is made of an elastic tubular portion composed of a bisco-elastic material such as rubber as the vibration absorber and fixed to a pivot set on the apparatus main body frame, and a compression coil spring as an elastic member is fixed to the outside of the elastic tubular member. On this elastic tubular portion of the buffer unit, a support piece formed on the casing constituting the recording and reproducing unit for mounting the optical pickup is supported. Thus, the recording and reproducing unit is supported in a floating state on the frame constituting the main body of the apparatus by the buffer unit means.

Through the recording and reproducing unit supported on the main body of the apparatus by the shock absorbing unit means, any shock or vibration applied to the main body of the apparatus can be absorbed by the shock absorbing unit, so that the information signal is affected by the shock or vibration. Can be recorded and reproduced without receiving.

On the other hand, the buffer unit supporting the recording and reproducing unit has a function of absorbing the shock or vibration applied to the main body of the apparatus, as well as the function of supporting the recording and reproducing unit with respect to the main body of the apparatus. Therefore, the shock absorbing unit is required to have sufficient elasticity to support the recording and reproducing unit, making it difficult to lower the resonance frequency of the shock absorbing unit and thus the vibration is not sufficiently absorbed. On the other hand, the elastic tubular member constituting the cushioning member is placed under a large load of the recording and reproducing unit and is elastically deformed when subjected to vibrations in the load of the recording and reproducing unit, but deforms beyond the elastic limit in the permanent elastic deformation state. Therefore, the elastic deposits are vulnerable to the gap and the deformation of the gap, so that sufficient durability is not maintained. In addition, the recording and reproducing unit supported by the above-mentioned buffer unit cannot be maintained on the correct support with respect to the main body of the apparatus due to chronological changes of the elastic deposit, and thus the recording and reproducing of the main body of the apparatus is performed. Deviation from the relative support position of the unit. For example, a deviation occurs between the holder for the disc cartridge provided on the main body of the apparatus and the cartridge loading position on the regeneration unit, which sometimes makes it impossible to load the disc cartridge in place.

On the other hand, the shock absorbing unit supporting the recording and reproducing unit in a floating state with respect to the main body of the apparatus is elastically deformed to absorb them when shock or vibration is applied to the main body of the apparatus. When the shock absorbing units are elastically deformed, the recording and reproducing units supported by these shock absorbing units move or move relative to the frame constituting the main body of the apparatus. When the shock-absorbing unit elastically deformed under the shock or vibration applied to the main body of the apparatus collides against the frame of the recording and reproducing unit, the shock or vibration applied to the main body of the apparatus is transmitted directly to the recording and reproducing unit. Thus, it becomes impossible to record and reproduce the information signal with the proper recording and reproducing characteristics by tracking the recording track in which the light beam is formed on the recording medium.

In a recording and reproducing apparatus in which the recording and reproducing unit is held in a floating state with respect to the main body of the apparatus, when the buffer unit is subjected to elastic deformation, there is enough gap for the buffer unit to move without crashing against the recording and reproducing unit. It occurs between the unit and the frame. Such a gap between the device main body and the recording and reproducing unit makes it difficult to achieve the size reduction of the recording and reproducing device.

[Object and Summary of the Invention]

It is an object of the present invention to provide a recording and reproducing apparatus in which shock or vibration applied to the main body of the apparatus is absorbed to prevent transmission to a recording and reproducing unit provided in the main body of the apparatus.

It is another object of the present invention that vibrations applied to the main body of the apparatus are significantly prevented so that the recording and reproducing unit provided in the main body of the apparatus is permanently supported at a preset position so that the information signal is recorded on the recording disk as a recording medium such as a magnetic-optical disk. There is provided a recording and reproducing apparatus which is recorded and reproduced with a recording / reproducing characteristic suitable for the present invention.

Another object of the present invention is to provide a recording and reproducing apparatus, wherein the recording and reproducing unit is supported by the buffer unit in a preset position with respect to the apparatus main body.

Another object of the present invention is to provide a buffer unit which is easily assembled and easily mounted on a recording and reproducing apparatus.

The recording and reproducing apparatus according to the present invention includes a recording and reproducing unit mounted on the base through a plurality of buffer units and a lid member rotatably mounted on the base for covering the recording and reproducing unit. A leaf spring that biases the recording and reproducing unit toward the base is provided between the lid member and the recording and reproducing unit. When the lid member is in the position covering the recording and reproducing unit, the recording and reproducing unit is maintained at a position where the load of the recording and reproducing unit and the elastic force of the shock absorbing unit and the elastic force of the leaf spring are in balance.

Each buffer unit supporting the recording and reproducing unit on the base includes a vibration absorbing member and an elastic member fixed to the outside of the vibration absorbing member.

The recording and reproducing apparatus according to the present invention includes a supporting member on which the recording and reproducing unit is arranged. Another elastic member constituting the shock absorbing unit is provided between the base and the supporting member to bias the recording and reproducing unit toward the lid member against the leaf spring force.

Each shock absorbing unit has a mounting member penetrating the vibration absorbing member. The mounting member includes a pair of rests having one end mounted on the support member and supporting both ends of the vibration absorbing member. The vibration absorbing member of the shock absorbing unit includes an engagement recess engaged with a base supporting the recording and reproduction unit, a cylindrical first portion provided on one side of the engagement recess and fixed by the other elastic member, and an opposite side of the engagement recess. It has a conical second portion provided in. The second part is larger in diameter than the first part. The vibration absorbing member is integrally formed by the engaging recess and the first and second portions.

The recording and reproducing apparatus according to the present invention includes a recording and reproducing unit mounted to be finely moved by a plurality of buffer units in the main body of the apparatus. The recording and reproducing unit has a holder for a disc cartridge rotatably mounted for holding and loading or releasing the disc cartridge on or from the recording and reproducing unit. A rotating member is rotatably mounted on the apparatus main body to cover the recording and reproducing unit. The engaging member is mounted on the inner surface of the rotating member for engagement with the holder by the opening movement of the rotating member and for rotating the holder in the loading or releasing direction of the recording medium. The engagement member is movably mounted on the rotating member. When the rotating member covers the recording and reproducing unit, the recording and reproducing unit is moved finely in the main body of the apparatus so that the recording and reproducing unit is in contact with the engaging member, and the engaging member is moved to track the fine movement of the rotating member. . The apparatus of the present invention also has a biasing member for permanently biasing the engagement member in the engagement direction with the holder.

Other objects, features and configurations of the present invention will become apparent from the following examples and claims.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The preferred embodiment of the present invention will be described in detail with reference to the drawings. These embodiments relate to disc recording and reproducing apparatus using a magneto-optical disc which enables re-recording of an information signal as a recording medium or an optical disc used only for reproduction of the information signal.

[Overview of overall configuration of disc recording and playback device]

As shown in FIG. 8, the disc recording and reproducing apparatus according to the present invention is supported by the frame 1 in a floating state by the frame 1 constituting the apparatus main body and the plurality of buffer units 14. Base 2. The battery casing 8, the top cover 3 and the bottom cover 6 are mounted on the frame 1. A lid 700 having a top cover 5 and a lid support plate 4 is rotatably mounted on the battery casing 8. In the disc recording and reproducing apparatus of the present invention, the lid 700 is rotatably mounted on the main body of the apparatus consisting of the frame 1, the battery casing 8, the outer lid 5 and the lower lid 6. Lid 700 opens or closes the upper side of the device main body as shown in FIGS. 9 and 12. The cartridge holder 3 is rotatably mounted to the upper surface of the base 2.

An illustration electrically connected between the top cover 7 and the lid support plate 4 constituting the lid 700 to the display unit 16 provided on the top surface of the key input unit 15 and the top lid 7. There is no electrical circuit mode. As shown in FIG. 1, the key input unit 15 includes a play button 28, a forward track jump button 31, a reverse track jump button 30, a stop button 32, a stop button 29, and It has an output sound adjustment button (33, 34). The display unit 16 is composed of a display device such as a liquid crystal display device. The display unit 16 shows various information according to the operation mode of the disc recording and reproducing apparatus. A slide cover mounted on the upper cover 7 in which another push button switch 27 constituting the key input unit 15 slides toward the front of the main body of the apparatus as indicated by arrow A in FIG. 26) is covered.

As shown in FIG. 36 in the main body of the apparatus, there is another electrical circuit board, not shown, to which the CPU 338 is mounted as a control circuit. The key input unit 15 is electrically connected to the CPU 338. The CPU 338 responds to the input signal to influence the drive control of the disk drive mechanism of the recording and reproducing unit provided on the base 2.

[Configuration of Disc Cartridge]

The magneto-optical disk 200 used as a recording medium of the information signal for the recording and reproducing apparatus according to the present invention will be described. The magneto-optical disk 200 is composed of a light-conductive transparent artificial resin such as polycarbonate, and consists of a disk substrate of about 64 mm diameter and a signal recording layer of magnetic material electrodeposited on the substrate. The optical recording layer is locally heated to a temperature slightly above the Curie temperature by a light beam emitted from a light source such as a semiconductor laser and converges on the recording layer. The recorded information signal is thus read by emitting a linear polarized light beam, such as a laser beam, onto the signal recording layer and detecting the return light from the magneto-optical disk 200.

The optical disc 201 used for reproducing the information signal is made of a reflective layer of a metal substrate, such as aluminum, mounted thereon, similar to a magneto-optical disc which enables re-recording of the information signal. A string of small pits corresponding to the information signal is formed on the substrate of the optical disk by means of injection molding or the like. The information signal recorded on the optical disc 200 is read by radiating a beam of light onto the pit string and detecting the return light from the optical disc by an undetected light detector.

The magneto-optical disk 200 and the optical disk 201 are rotatably housed in the main cartridge bodies 205 and 216 to constitute a disk cartridge as shown in FIGS. 38 to 41. The cartridge main body 205 of the disc cartridge 220 surrounding the magneto-optical disk 200 which enables both recording and reproduction of the information signal has a length equal to the diameter of the magneto-optical disk 200 on each side. It is square. The cartridge main body 205 has an opening 223 for the magnetic head on the top surface to partially expose the signal recording surface of the magneto-optical disk 200 outward beyond the inner outer edge, as shown in FIG. Have The cartridge main body 205 has an opening 222 for optical pickup in a portion on the lower surface which contacts the opening 233, as shown in FIG. In the middle of the lower surface has a chuck opening 213.

The magnetic head opening 203 and the optical pickup opening 222 formed in the main cartridge body 205 are opened or closed by a shutter member 206 movably mounted on the main cartridge body 205. The shutter member 206 molded from a phosphine resin or made from a metal plate has a pair of shutter plates large enough to cover the openings 222 and 223, and a connecting web interconnecting the shutter plates, and is U-shaped on a multiple face. The shutter member 206 bears against movement along the side of the main cartridge body 205 by engaging the connecting web with the support groove 207 formed in the main cartridge body 205. That is, the shutter member 206 opens or closes the openings 223 and 222 by lateral movement of the main cartridge body 205.

The main cartridge body 216 for the disc cartridge 220 surrounding the replay optical disc 201 is configured as a square with each side having a length equal to the diameter of the optical disc 201 embedded therein. Unlike the record / playback disc cartridge 220 described above, the main cartridge body 216 has a flat top surface without openings as shown in FIG. An optical pickup opening 222 and a chuck opening 213 are formed in the lower surface of the main cartridge body 216. As shown in FIG. 41, the optical pickup opening 222 formed in the cartridge main body 216 is opened or closed by a shutter member 217 movably mounted on the main cartridge body 216. As shown in FIG. The shutter member 271 formed of an artificial resin or made from a metal plate has a pair of shutter plates of a size sufficient to cover the opening 222 for the optical pickup, and a support for interconnecting the shutter plates, and is U-shaped in cross section. . The shutter member 206 bears against movement along the side of the main cartridge body 205 by engaging its support with the support groove 207 formed in the main cartridge body. That is, the shutter member 217 opens or closes the opening for the optical pickup by the movement along the side of the main cartridge body 205.

Each shutter member 206, 217 provided in the recording / playback disc cartridge 221 and the replay-only disc cartridge 220, respectively, has a shutter-sealing opening configured to engage the shutter-sealing operation member provided on the disc recording / playback apparatus. 208 is formed in the middle of the connecting web or support.

In the middle of the recording / playback disc cartridge 221 and the replay-only disc cartridge 220, a chuck opening 204 for the magneto-optical disk 200 and the optical disk 201 is formed, respectively. Each of the magneto-optical disk 200 and the optical disk 200 has a chuck plate 202 for sealing the chuck opening 204. The chuck plate 202 is made of a magnetic metal material such as iron or stainless steel as a disk of sufficient size to seal the chuck opening 204. The chuck opening 204 and the chuck plate 202 are exposed to the outside of the cartridge main bodies 205 and 216 through the chuck opening 213.

On the lower surfaces of the cartridge main bodies 205 and 216, there are front and rear positioning openings 209 and 210 which are perforated in pairs, as shown in FIGS. 40 and 41. FIG. The positioning opening 209 is formed near the corner toward the optical pickup opening 222 and has an elliptical shape whose long axis extends forward and backward. The other positioning opening 210 is located near the other corner toward the optical pickup opening 222 and is formed as a circular hole.

A plurality of discriminant openings 224 are formed in the side surface of the lower surface of the main cartridge bodies 205 and 216 opposite the shutter members 206 and 217. These discrimination openings 224 are used to determine the shape or state of the disc accommodated in the cartridge main bodies 205 and 216 whether or not an information signal can be recorded. An error recording preventing member 214 is provided in the cartridge main body 205 of the recording / playback disc cartridge 220 so as to be partially exposed to the opposite side described above as shown in FIG. The error write preventing member 214 is movable to open and close the discriminant opening 224 for conversion to the recordable / non-recordable discriminable state. One side of each of the cartridge main bodies 205 and 216 is configured with an engagement recess 212 engaged by a portion of the loading mechanism during loading of the disc cartridges 220 and 221 as shown in FIGS. 40 and 41.

On the side perpendicular to the side of the cartridge main body 205 of the recording / reproducing disc cartridge 220 mounting the shutter member 206, a magneto-optical disc discrimination recess 211 is formed as shown in FIG. do. On the side perpendicular to the side of the cartridge main body 216 of the replay-only disc cartridge 221 on which the shutter member 217 is mounted, an optical disc discrimination recess 218 is formed, as shown in FIG. . The magneto-optical disc discrimination recesses 211 and the optical disc discrimination recesses 218 are different in depth, and accordingly the magneto-optical disc is discriminated from the optical disc based on the difference in depth.

The above-described disc cartridges 220 and 221 are inserted into and taken out of the disc recording / reproducing apparatus in a direction parallel to the moving direction of the shutter members 206 and 217 in the introduction direction, as indicated by arrows E in FIGS. 38 and 39. Lose.

[Configuration of the casing constituting the main body of the device]

The frame 1 of the recording and reproducing apparatus was made as a framework defining the peripheral wall of the casing constituting the main body of the apparatus, as shown in FIGS. 21 and 22. On the front surface of the frame 1, as shown in Figs. 21 and 22, there is a movably mounted release lever 116, a lock lever 115, and a recording lever 186 which will be described later. The cell casing 8 is made of a phosphine material large enough to hold the cell 225 therein and screwed to the rear of the frame 1. The battery casing 8 consists of having an open / closed lid 25 on the side to open or close the battery insertion / removal opening, as shown in FIG. Cell 225 is introduced into or removed from the cell insertion / removal mechanism. The cell 25 is a rechargeable secondary battery, such as an Itum ion cell, a Lithium hydrogen cell or a nickel-cadmium (Ni-Cd) cell housed in a container casing. Both terminals and the negative terminal are provided on the outer surface of the container casing. Inside the battery casing, a power supply terminal connected by each electrode terminal of the battery 225 is mounted.

The outer lid 5 constituting the casing along the frame is made of artificial material, for example, and is framed, as shown in FIGS. 23 and 34. The outer sheath 5 is mounted on the frame 1 to receive the outer periphery of the frame 1 on the front face of the outer sheath 5, and an engagement lug 175 provided at one end of the release lever 116. ) And a recording knob 18 engaged by an adjacent rud 341 provided on the opposite side of the recording lever 186 and the release knob 17 engaged with each other. When the release knob 17 slides, the slide of the release lever 116 is brought. The recording knob 18 forms a part of the key input section 15 and presses the recording start switch connected to the CPU 338 (not shown) via the recording lever 186.

The lower lid 6, which forms a casing along the frame 1, is made of metal as a flat plate, as shown in FIGS. 3 to 7. The lower cover is screwed to the lower side of the frame 1 and forms the lower face of the outer casing of the device main body.

The casing constituting the apparatus main body has connection jacks 36 to 40 for input / output of information signals, as shown in FIGS. 3 and 4. These connection jacks 36 to 40 are connected to an electric circuit formed on an electric circuit board.

[Configuration of Disk Drive Unit]

The base 2 is a flat plate, as shown in Figs. 15 to 17, made of a material such as metal. The disc drive unit 339 is formed on the base 2. In the middle on the lower surface of the base 2, a spindle motor 89 having an upwardly directed drive shaft is mounted. The drive shaft of the spindle motor 89 protrudes above the base 2 through a through hole formed in the middle of the base 2. The disk table 11 is formed on the drive shaft of the spindle motor 89. It is formed as a disk on an upper surface which forms a truncated conical centering member engaged in the chuck hole of the magneto-optical disk 200 or optical disk 201. A magnet is provided to attract the chuck plate 202 on the upper surface of the disk table 11 provided with the centering member. The centering member is fixed to the chuck hole 204 and at the same time the chuck plate 202 when the magneto-optical disk 200 or the middle of the optical disk 201 including the chuck hole 204 is set on the disk table 11. A magnet is attracted to hold the magneto-optical disk 200 or the optical disk 201 in place. At this time, the magneto-optical disk 200 or the optical disk 201 is positioned parallel to the center of the chuck hole 204 parallel to the center of the drive axis of the spin motor 89. Spindle motor 89 makes the rotation of magneto-optical disk 200 or optical disk 201 along disk table 11.

An optical pickup 10 is placed on a base 10 having various optical devices for guiding a light beam containing a semiconductor laser as a light source, a light receptor such as a phototransistor, a semiconductor laser, or an object beam 130. Is mounted. The optical pickup 10 converges on the magnetic-optical disk 200 or the optical disk 201 the light beam beams emitted from the semiconductor laser through the optical device and the objective lens 130. The optical pick-up 10 also receives the return light of the beam of beams emitted on the magnetic-optical disk 200 or the optical disk 201 to the optical receptor through the objective lens 130 and the optical device for detection by the optical receptor. To guide. The optical pickup 10 measures the polarization amount and angle from the returning light of the magnetic-optical disk 200 or the optical disk 201 in order to read the conquest signal recorded on the magnetic-optical disk 200 or the optical disk 201. Detect

The optical pickup 10 is located on one side of the spindle motor 89, and as shown in FIGS. 15-17, a pair of guide axes 122, 123, respectively parallel to each other on the bottom surface of the base 20. It is mounted to be movable through). The optical pickup 10 is guided by guide shafts 122 and 123 to move towards or away from the spindle motor 89. The optical pickup 10 has an objective lens 130 exposed to the upper portion of the base 2 via a through hole formed in the base 2. The objective lens 130 is in contact with the signal recording surface of the magneto-optical disk 200 or the optical disk 201. That is, the optical pick-up 20 is made by the radiation of the light beam for recording the information signal on the magneto-optical disk 200 which is gripped by the disk table 11 and rotates thereon and the magneto-optical disk 200 or the optical disk ( 201).

The lower surface of the base 2 is equipped with an optical pickup feeding motor 124 for feeding optical pickups under the guidance of the guide shafts 122 and 123, as shown in FIGS. The drive gear 125 is mounted on the drive shaft of the optical pickup feeding motor 124. The drive gear 125 meshes with a reduction gear drive 128 rotatably supported on the bottom surface of the base 2. The reduction gear 126 meshes with the driven gear 127 mounted at one end of the screw shaft 121 rotatably mounted to the lower surface of the base in parallel with the guide shafts 122 and 123 and the screw shaft 121 of the screw shaft 121. The driven gear 127 is rotated about its axis. The screw shaft 121 has a male thread portion on the outer peripheral surface that is engaged with the optical block of the optical pickup 10. That is, when the pickup feeding motor 124 rotates, the screw shaft rotates to move the optical pickup along the guide shafts 122 and 123.

Around the spindle motor, when the optical pickup 10 is closest to the spindle motor 89 within the moving range of the optical pickup 10, that is, as shown in FIGS. 15 to 17, the optical pickup is self-lighting. An inner peripheral position detection switch 128 is mounted which is pressed and actuated by the optical block of the optical pickup 10 when in the radially innermost of the disk or optical disk.

The front positioning pins 70 and the rear are positioned on the upper surface of the base 2 on the fitted positioning pins, i.e. at offset positions near the front and rear edges of the base 2, as shown in FIGS. There is a positioning pin 342. The forward positioning pin 70 is tapered truncated toward its distal end as shown in FIG. 20. The rear positioning pin 342 is similar in truncated cone. When the recording / playback disc cartridge 220 or the reedlay-only disc cartridge 221 is set in the loading unit on the cartridge main body 205 or 216, these positioning pins 70 and 342 are set to the disc cartridge relative to the base 2; Engage with positioning grooves 209 and 210 formed in cartridge main body 205 or 216 to determine the position of 220 or 221. At an offset position near the front edge of the base 2, a height position setting boss 71 is formed as shown in FIGS. 12 and 20. The height position setting boss 71 is made by extending a part of the base 2 upwards. The height position setting boss 71 is adapted to bear on the lower major surface of the cartridge main body 205 or 216 set on the base 2 for positioning of the cartridge main body 205 or 216. Below the height position setting boss 71, a cartridge loading detection switch 72 is mounted. The cartridge loading detection switch 72 has a pusher 73 protruding above the top surface of the height position setting boss 71 through a through hole formed in the height position setting boss 71. When a force is applied to the upper surface of the height position setting boss 71 on the lower major surface of the cartridge main body 205 or 216, the cartridge loading detection switch 72 indicates that one of the disc cartridges 220, 221 is not loaded. The pusher 73 is pressed by the major surface for detection.

In the vicinity of the cartridge loading detection switch 72 provided on the base 2, a plurality of discriminating switches 107 and 108 for detecting the discriminating groove 224 formed in the disc cartridge 220 or 221 are mounted. These discrimination switches 107 and 108 are pressed when the depth of the discriminating groove is low, and are not pressed when the hole is deep.

On the base, the cartridge main body 205 or 206 is positioned by the positioning pins 70 and 342 and the height position setting boss 71 in the horizontal direction and the height direction when the disc cartridge 220 or 221 is set in the cartridge loading unit. Is determined and the magneto-optical disk or optical disk is held in place on the disk table 11. At this time, the cartridge loading detection switch 72 detects the loading of the disc cartridge 220 or 221 and the determination switches 107 and 108 detect the state of the determination groove 224. The cartridge load detection switch 72 is connected to the central processing unit (CPU) 338 as the switch A, as shown in FIG.

When the disc cartridge 220 or 221 is loaded in position on the cartridge loading unit, the magneto-optical disk 200 or the optical disk 201 is not connected with the inner wall of the cartridge main body 205 or 216 without the cartridge main body being connected. It is possible to rotate within the body 205 or 216.

[Array for supporting magnetic head]

On the optical pickup 10, as shown in FIGS. 12 to 14, 18 and 19, the magnetic head 13, the magnetic head support plate 132 and the magnetic head through the connecting arm 12. The support arm 77 is mounted.

The connecting arm 12 is L-shaped and has one end mounted on the optical block of the optical pickup by the set screw 119 as shown in FIG. 13 and the other end is oriented upward from the rear end of the optical block. do. The other end of the connecting arm 12 is located further back than the rear edge of the base 2 as shown in FIG. 18 and moved with the optical pickup 10 without adjoining the base 2. The connecting arm 12 has its other end protruding above the top surface of the base 2. The rear edge of the magnetic head support plate 132 is rotatably mounted via the pivot 74 near the other upper end of the connecting arm 12. The magnetic head support plate 132 has a forwardly oriented front side and a front edge rotatable toward and away from the base 2, as shown in FIGS. 12-14. One positioning lug 87 protrudes from near the other end of the connecting arm 12. Positioning lug 87 is positioned on top of positioning arm 75 and as shown in FIGS. 12-14, such that downward movement is inhibited when adjacent to the end region of positioning arm 75. Is located. The magnetic head support arm 77 is supported by directing its distal end forward, as shown in FIGS. 12-14, and causes a portion to deflect laterally near the distal end. Adjacent ends of gimbal springs 79 are mounted on magnetic head support plate 132. The magnetic head 13 is mounted to the distal end of the gimbal spring 79 and part of it is bent to form the retaining support 117. The retaining support 117 engages the bend near the distal end of the magnetic head support arm 77 as shown in FIGS. 12-14.

Therefore, the supported magnetic head 13 is positioned above the objective lens 130 of the optical pickup 10 and is in contact with the optical pickup 10. The magnetic head is also movable up and down for contact or separation with the base 2 by the magnetic head support plate 132 which rotates with respect to the connecting arm 12. The magnetic head 13 is also located below by the proximity of the positioning lugs 87 and the positioning arms 75. Torsional coil spring 76 is positioned around one end of pivot 74. The torsional coil spring 76 has a coil portion positioned between the adjacent portion of the positioning arm 75 and the magnetic head support plate 132, as shown in FIGS. 12-14. It is held by the arm 75 and the magnetic head support plate 132. The torsion coil spring thus presses the magnetic head support plate against the opposite side direction of the connecting arm 12 for lateral positioning, while the magnetic head support against the connecting arm in the direction in which the magnetic head 13 moves downward. Deflect plate 132. The magnetic head 13 is supplied with current through the flexible printed circuit board 133 extending between the adjacent end of the magnetic head 13 and the magnetic head support arm 77.

[Configuration of cartridge holder]

The upper surface of the base 2 is mounted with a cartridge holder 3 into which the disc cartridge 220 or 221 flows. In order for the disc cartridge 220 or 221 to be inserted from the front side and to hold the inserted disc cartridge, as shown in FIGS. 12 to 14, 18 and 19, the cartridge holder 3 is A support piece 151,152 bent inwardly from the lower end of the top plate and the side wall portion, and left and right side wall portions 149,150 that depend on the top plate and both lateral edges. The cartridge holder 3 is manufactured by bending an integral metal plate. The disc cartridge 220 or 221, through the cartridge holder 3, is spaced between the lower sidewall portions 149 and 150 under the upper plate from the front opening in the direction indicated by the arrow in FIG. 8 to be gripped and supported on the side of the lower major surface. Flows into. At this time, the disc cartridge 200 or 201 is lowered in perfect state with the chuck opening 213 for the optical pickup 222, the positioning holes 209, 210 and the discriminating hole 214 in contact with the lower side of the cartridge holder 3. It has a lower major surface facing.

In the middle of one of the sidewall portions 150 of the cartridge holder 3 is a convexly mounted shutter opening piece 136 oriented towards the inside of the cartridge holder 3, as shown in FIGS. 18 and 19. There is. When the disc cartridge 220 or 221 is inserted into the cartridge holder 3, the disc cartridge 220 or 221 is introduced into the cartridge holder to open the openings 213, 222 and 223 formed in the cartridge main body 205 or 216. The shutter opening piece 136 presses against the connecting web, or the front end face of the support of the shutter member 206 or 217 to move the shutter members 206 and 217. Shutter cover member of an elastic material such as a leaf spring to extend toward the inside of the cartridge holder 3, as shown in FIGS. 18 and 19 on the front side of the side wall portion 150 of the cartridge holder 3. 135 is provided. When the disc cartridge 220 or 221 is introduced into the cartridge holder 3, the shutter cover member 135 engages the shutter cover opening 208 of the shutter member 206 or 217, and the disc cartridge 220 or 221 is When extracted from the cartridge holder 3, the shutter member 206 or 217 is moved in the direction of closing the openings 213, 222, 223 formed in the cartridge main body 205 or 216.

A pair of retaining springs 134, 137 is mounted on the rear side of the top plate of the cartridge holder 3. Each of the retaining springs 134, 137 is oriented to face backwards while securing its adjacent end to the top surface of the top plate. The foremost part of the retaining springs 134, 137 projects through the through holes 138, 139, which are formed below the top plate, i.e. into the cartridge holder, on both rear sides of the top plate, as shown in FIGS. do. Retaining springs 134 and 137 thus pressurize and support the major surface of disc cartridge 220 or 221 introduced into cartridge holder 3.

On both rear sides of the cartridge holder 3 are mounted left and right pivots 86 having axes parallel to the rear edges of the cartridge holder 3. This pivot 86 passes through the left and right bearing members 98,90 mounted near the rear of the base 2, as shown in FIGS. 15-17, so that the cartridge holder 3 is rotated. As a center it is supported for rotation about these pivots 86. As shown in FIG. 12, the disc cartridge 220 or 221 is introduced into the cartridge holder 3 which is rotated upwardly away from the base 2 to be gripped and subsequently set on the base 2. When the cartridge holder 3 is rotated downward as shown in the drawing, the disc cartridge 220 or 221 gripped by the cartridge holder is loaded to the cartridge loading position on the base 2. Thus, the disc cartridge 220 or 221 loaded on the base 2 is pushed forward and supported by retaining springs 134 and 137.

A magnetic head support plate 132 and a magnetic head support arm 77 are positioned above the cartridge holder 3. The top plate of the cartridge holder 3 has a magnetic head support arm 77 and a gimbal spring 79 that accompany the movement of the optical pickup 10, as shown in FIGS. 18 and 19, with the possible range of movement. There is a through hole 140 is a hole. That is, the magnetic head 13 is in contact with the top surface of the disc cartridge 220 or 221 held in the cartridge holder 3 through the through hole 140.

On the side that is the outer surface of the side wall portion 156 of the cartridge holder 3, a first click stop link 24 is rotatable through the pivot 318, as shown in FIGS. 28-30. Have an adjacent end that is securely mounted. The first stop click link 24 is rotatably mounted on a click stop lever that has a forward-facing distal end and is movably mounted near a side edge of the upper surface of the base 2. That is, the click stop lever 24 has a support pin 322 set on the base 2 introduced into an elliptical hole 323 having a longitudinal direction as the front-rear direction and a long axis extending in the longitudinal direction, and thus the click. The stop lever 24 can slide in the front-back direction. The click stop lever 23 has a support piece 320 squeezed upwards, and the first click stop link 24 has a distal end mounted via a pivot 328 relative to the support piece 320. The foremost end of the first stop link 24 passing through the pivot 328 is formed with the click stop projection 319, while the support piece 32 is formed with the click stop hole 321.

When the cartridge holder 3 rotates upwards, as indicated by arrow G of FIG. 29, the click stop lever 23 moves to the first click stop link 24 as indicated by arrow I of FIG. Slide backwards through). The click stop boss 319 then moves while elastically deforming the distal end of the first click stop link 24 to the side of the support piece 320 as indicated by arrow H in FIG. When the cartridge holder 3 is rotated halfway, the click stop boss 319 engages with the click stop groove 321. The cartridge holder 3 is then held in a position spaced from the base as shown in FIG. 30. When the cartridge holder 3 rotates toward the machine casing opposite the arrow G of FIG. 29, the click stop boss 319 is disengaged from the click stop groove 321 so that the click stop lever 23 is It slides forward as indicated by arrow J and returns to the initial position.

[Disc Cartridge Ejection Mechanism]

At the rear on the upper surface of the base 2 is mounted a disc cartridge ejection mechanism for ejecting the disc cartridge 220 or 221 in the forward direction up to the position held by the cartridge holder 3. The disc cartridge ejection mechanism includes a cartridge ejection lever 302 rotatably mounted at the rear of the base 2 and an ejector lever lock lever for locking the cartridge ejection lever 302 in the rear position as shown in FIG. Has 309.

The cartridge release lever 302 is pivoted through a pivot 303 for rotation about an adjacent end projecting down the base and the bottom surface of the base 2 through a through hole 304 formed near the rear edge of the base 2. Has an adjacent end supported. An engagement lug 307 is formed on the middle lower edge of the cartridge release lever 302 for extension into the bow-shaped slit 308 formed in the base 2. The cartridge release lever 302 has a range of rotation defined by the slit 308 so that it can rotate from a position in which the distal end is obliquely forwardly to a position in which the distal end is laterally oriented along the rear edge of the base 2. . A tension coil spring 129 is mounted between the spring retainer 305 provided at the adjacent end of the cartridge release lever 302 and the spring retainer lug 306 provided at the lower surface of the base 2. The tension coil spring 129 deflects the distal end of the cartridge ejection lever 302 in the forward direction as indicated by the arrow K in FIG. 28.

The release lever lock lever 309 is slidably supported laterally by supporting plates 310,311 fixed to the upper surface of the base 2, as shown in FIG. The release lever lock lever 309 is in contact with the rear end of the lock release lever 324 mounted to the click stop lever 23 so that one end thereof extends rearward from the click stop lever 23, and the other end is engaged with the engagement lug. A back end of the slit 308 engaged by 307. The lock release spring 324 is elastically deflectable upwardly at its rear end and is located on the upper surface of the release lever lock lever 309. The lock release lever 324 is a tapered portion 325 having a cutout 326 inclined toward one side and open toward one side and having an inclined edge provided at the rear edge of the cutout 326. Has The other end of the release lever lock lever 309 is formed with a tapered portion 316 inclined towards the engaged lug 307. The release lever lock lever 309 is as indicated by arrow M in FIG. 28 by a tension coil spring 315 mounted between the spring retainer 313 and the spring retainer lug 313 provided on the base. Deflected toward the opposite side, ie, slit 308.

As shown in FIG. 28, in the initial state of the cartridge discharging mechanism in which the cartridge holder 3 is positioned toward the base 2, the cartridge discharging lever 302 is positioned forward, and the lock release spring 324 The clock stop lever 23 is also placed forward. When the cartridge holder 3 rotates upwards as indicated by arrow N in FIG. 28, the lock release spring 324 moves backwards as indicated by arrow P in FIG. At this time, the lock release spring 324 has the lock release pin 317 by the taper portion 325 to slide the release lever lock lever 309 laterally against the deflection of the tension coil spring 315. Press to face side. When the cartridge holder 3 rotates at the preset angle, the lock release spring 324 moves the cut-out 326 to a position that mates with the unlock pin 317. The release lever lock lever 309 causes the lock release pin 317 to flow into the cut-out 326 and the initial state is reestablished.

When the disc cartridge 220 or 221 is introduced into the cartridge holder 3, the disc cartridge 220 or 221 is in a direction opposite to the direction indicated by the arrow K in FIG. 28 with respect to the deflection of the tension coil spring 129. The rotational release of the cartridge eject lever 302 is pressed to rotate the cartridge eject lever 302. When the cartridge ejection lever 302 is rotated backwards, the engagement lug 307 is formed at the opposite end of the ejection lever lock lever 309 to slide the ejection lever lock lever 309 toward the side described above. Press 316). The release lever lock lever 309 slides toward the side described above as indicated by arrow Q in FIG. However, when the disc cartridge 220 or 221 is completely introduced into the cartridge holder 3 and the cartridge ejection lever 302 has reached the rear position, the engagement lug 307 is rearward of the ejection lever lock lever 309. The position is reached and the initial position is established again. The cartridge release lever 302 is locked in the rear position.

When the cartridge holder 3 rotates toward the base 2, the lock release lever 324 moves forward as it is elastically deformed toward the upper side, and the inclined edge 327 is shown in FIG. It is in sliding contact with the upper end of the unlocking pin 317 as shown. Thus, the release lever lock lever 309 does not slide. At this time, when the cartridge holder 3 grips the disc cartridge 220 or 221, the disc cartridge 220 or 221 is held in the cartridge holder 3 and moves toward the base 2 in this state.

When the cartridge holder 3 holding the disc cartridge 220 or 221 rotates upward away from the base 2, the ejector lever lock lever 309 rotates the cartridge holder as indicated by arrow Q of FIG. While sliding towards the side described above. When the ejector lever lock lever 309 slides toward the side described above in this manner, the ejector lever lock lever 309 is released so that the cartridge ejector lever 302 may move the disc cartridge 220 or 221 of the cartridge holder 3. Rotates forward as indicated by arrow K in FIG. 28 under the deflection of tension coil spring 129 to release forward.

[Configuration for lifting magnetic head]

In the recording and reproducing apparatus of the present invention, the lifting of the magnetic head 13 causes the magnetic head lifting plate 20 mounted on the upper surface of the cartridge holder 3 and the lower portion of the base 2 to slide the electric lever 19. By means of a magnetic head lifting lever 94 mounted on the face.

The magnetic head lifting plate 20 has a magnetic head support arm 77 and gimbals to seal the rear portion of the cut-out 140, as shown in FIGS. 13-14, 18 and 19. It is mounted under the spring 79. The magnetic head lifting plate 20 has a rear edge rotatably supported with respect to the top plate of the cartridge holder 3 via the pivot 78 so that the front side is movable in the vertical direction. When rotated upward, the magnetic head lifting plate 20 presses the gimbal spring 79 toward the magnetic head support arm 77 and centers the pivot 74 as the center of rotation as shown in FIG. The gimbal spring 79 and the magnetic head support arm 77 are rotated. When rotating downward, the magnetic head lifting plate 20 has a portion of the front edge adjacent to the top plate of the cartridge holder 3 so that it is located side by side with the top plate. At this time, the magnetic head support arm 77 rotates downward until the positioning lug 87 is pressed against the positioning arm 75. On the other hand, the gimbal spring 79 is lowered below the magnetic head support arm 77 until the engagement support 117 is suspended from the bent end of the magnetic head support arm 77. Thus, as shown in FIG. 13, the distance L1 from the lower surface of the magnetic head 13 to the upper surface of the magnetic head support arm 77 is determined by the magnetic head lifting plate (as shown in FIG. 20 is shorter than the distance L1 from the lower surface of the magnetic head 13 to the upper surface of the magnetic head support arm 77 when rotating downward. The magnetic head lifting plate 20 is rotatably deflected downward by the rotational part of the leaf spring 141 mounted by the mounting pin 142 on the upper surface of the cartridge holder 3. That is, the leaf spring 141 has the foremost end set on the magnetic head lifting plate 20, as shown in FIG.

A transmission lever 19 is mounted on the opposite side of the upper surface of the cartridge holder 3 for sliding in the front-rear direction, as shown in FIGS. 13 and 14. The transmission lever 19 has parallel support grooves 146 and 147 which are engaged by support plates 143 and 144 which respectively protrude from the upper surface of the cartridge holder 3. The transmission lever 19 has a lifting lug 80 on the side and it is located in the middle of the cartridge holder 3 for abutting the opposite side of the magnetic head lifting plate 20. The front end of the lifting lug 80 is a tapered portion 81 inclined upwards. A lower surface on the opposite side of the magnetic head lifting plate 20 is formed with an inclined surface 82 that mates with the lifting lug 80. The inclined surface 82 is formed as a tapered portion inclined backward by segmenting a part of the magnetic head lifting plate and bending upward.

When moved from the rear to the front, the electric lever 19 moves the lifting lug 80 with the magnetic head lifting plate 20 as the taper portion 81 slides in contact with the inclined surface of the magnetic head lifting plate 20. It is fitted into the space between the upper surface of the cartridge holder (3). The magnetic head lifting plate 20 rotates upward with respect to the deflection of the leaf spring 141, as shown in FIG. When moving from the front to the rear, the transmission lever 19 is the sliding lug 80 is the magnetic head lifting plate 20 and the cartridge as the tapered portion 81 makes sliding contact with the magnetic head lifting plate 20. Retreat backward through the space between the upper surfaces of the holder (3). This rotates the magnetic head lifting plate 20 downwards under the deflection of the leaf spring 141 to reset the initial position. The transmission lever 19 has a connecting arm 83 on opposite sides suspended toward the base, as shown in FIGS. 12 to 14. The connecting arm 83 protrudes below the base 2 through the through hole 84 formed near the opposite side of the base 2.

A magnetic head lifting lever 94 is formed on opposite sides of the bottom surface of the base 2 for sliding in the front-rear direction, as shown in FIGS. 15 to 17. The magnetic head lifting lever 94 has support grooves 98, 99 engaged by support pins 96, 97 set upwardly on the bottom surface of the machine casing 2. The magnetic head lifting lever 94 moves in the front-rear direction and responds to the operation mode of the recording and reproducing apparatus by the stepping motor 85 controlled by the central processing unit (CPU) 338. The stepping motor 85 is mounted to the rear portion of the bottom surface of the base 2. The drive gear 91 is mounted on the drive side of the stepping motor 85. The drive gear 91 meshes with a first transmission gear 92 rotatably supported on the bottom surface of the base 2. The first transmission gear 92 meshes with a worm wheel of the second transmission gear 93 rotatably mounted on the bottom surface of the base 2. The second transmission gear 93 has a pinion gear that meshes with the rack gear 131 provided on the magnetic head lifting lever 94.

The magnetic head lifting lever 94 moves in the front-rear direction under the driving force of the stepping motor 85 driven by the supply of the drive pulse from the central processing unit (CPU) 338, and thus the angle corresponding to the number of supplied pulses. Rotate to

The rear end of the magnetic head lifting lever 94 has an engagement opening 114 that mates with the through hole 84. In the engagement opening 114, it engages with the connecting arm 83 of the transmission lever 19 via the through hole 84. When the electric lever 19 slides back and forth, the electric lever 19 moves back and forth on the cartridge holder 3. When the magnetic head lifting plate 20 further rotates, the magnetic head 13 moves up and down. Even when the connecting arm 83 rotates about the pivot 86 as the cartridge holder 3 rotates as the center of rotation, the connecting arm 83 is used as the center of the arc as a center of the arc so that permanent engagement is made in the engaging opening 114. It is formed in an arc around the pivot 86 of 3).

In the middle of the magnetic head lifting lever 94 is a forward facing switch action piece 110. On the lower surface of the base 2, a detection switch 109 is provided for mating with the switch operating piece 110 to detect the initial position of the magnetic head lifting lever 94. The initial position detection switch 109 is pressed by the switch operating piece when the magnetic head lifting lever 94 moves to the front initial position to transmit a detection signal to the central processing unit (CPU) 338 that the lever is in the initial position. do. When the magnetic head lifting lever 94 is in the initial position, the transmission lever 19 is moved to the initial position and the magnetic head is kept in the upper position. The position of the magnetic head lifting lever 94 is found by counting the number of pulses supplied to the stepping motor 85 after outputting a detection signal from the initial position detection switch 109.

On the side of the magnetic head lifting lever 94, as shown in Figs. 15 to 17, a retaining protrusion 111 extending into the lateral guide is formed. The retaining protrusion 111 is in contact with the upper surface through a through hole 112 formed near the base 2. Retention pawls 88 are formed at the lower edges of the sidewall portions 149 of the cartridge holder 3, as shown in FIGS. The retaining sole 88 is hooked, ie the lower end projecting downwards is bent inward so that the retaining pole 88 penetrates when the cartridge holder 3 rotates downward and is set on the base 2. It protrudes below the base 2 through the hole 112. When protruding into the through hole 112 and the retaining pole 88 is located behind the retaining protrusion 111, the magnetic head lifting lever 94 must be in the initial position. When the retaining pole 88 protrudes into the through hole and the magnetic head lifting lever 94 moves backwards, the retaining pole 88 is held by the retaining protrusion 111, as shown in FIG. Extraction from 112 and upward movement of retaining pho 88 are not achieved. That is, when the magnetic head lifting lever 94 slides back after rotation toward the base 2, the retaining pawl 88 is held by the retaining protrusion 111 to prevent a disengaging movement from the base 2. do.

[Configuration supporting the donation]

The base 2 is supported by the floating method with respect to the frame 1 as described above. That is, the base 2 is supported by the shock absorbing unit 14 by four support pieces 190 to 193 protruding toward the inside of the frame 1, as shown in FIG.

The shock absorbing unit 14 has a shaft 330 set to hang to the lower surface of the base 2, as shown in FIG. The shaft 330 has a first flange at the upper adjacent end of FIG. 32 and a second flange at the distal end shown in the lower middle in FIG.

The shaft 330 has an adjacent end as a mount for mounting to the base 2. Mounting portion 330a has a caulking recess 330c formed axially from an adjacent end. The mounting portion 330a is introduced into the mounting opening of the base 2 and then mounted on the base 2 by coking, which is supposed to deform the periphery outside the caulking recess 330c. When the mounting portion 330a is mounted on the base, the first flange 331 is pressed against the base 2. The shaft 330 portion passing through the first flange 331 is a columnar-shaped pivot 330b. The distal end of the pivot 330b is formed with a female thread along the axis.

The second flange 332a is formed as a head of the set screw 332 having the central threaded portion 332a and is mounted to the distal end of the pivot 330b by a threaded portion 332c engaged with the threaded portion 332a of the shaft 330. do. A cross slot 332b, which is engaged by a screw driver, is formed on the opposite side of the portion having the threaded portion.

The shock absorber 334 is positioned between the first flange 331 and the second flange 332a as a vibration absorber. The shock absorber 334 is cylindrical and made of an elastic material such as butyl rubber. The shock absorber has a center hole penetrated by the pivot 330b of the shaft 330 and has upper and lower ends adjacent to the first flange 331 and the second flange 332a. The shock absorber 334 has an engagement hole that surrounds the shock absorber that is engaged by the inner major surface of the support holes 194-197 bored in the support lugs 190-193 formed in the frame 1. The shock absorber 334 absorbs the vibration transmitted from the frame 1 and prevents the vibration from being transmitted to the base. The shock absorbing unit 14 is compressed to be calibrated on the outside of the shock absorber 334 to function as a first elastic member located between the upper surfaces of the support pieces 190-193 of the frame 1 and the lower surface of the base 2. It has a coil spring 333. The compression coil spring 333 presses the base 2 upward by the elastic force. An end of the compression coil spring 333 facing the base 2 is fixed to the outside of the first flange 331.

The small diameter portion 330f that the pivot 330b mates with the frame 1 on the outer circumference to ensure a range that is movable relative to the axis of the frame in a direction perpendicular to the axis of the shaft 330 according to the deformation of the shock absorber 334. Has The outer circumferential surface of the first flange 331 is conical so that the diameter is reduced toward the base 2 to prevent the coil spring 333 from being separated.

As shown in FIG. 31 on the lower surface of the lid support plate 4 constituting the lid 700, as the second elastic member, the distal end is oriented downwardly, adjacent to the pair of spring plates 61 and 62. The end is mounted. As will be described later, when the lid support member 4 is secured to the frame 1 in the closed state of the lid, the base 2 and the cartridge holder 3 have the arrows s1 as shown in FIG. It is supported to be clamped by the four shock absorbing unit 14 and the spring plate 61 from the up-down direction indicated by s2). That is, the height position of the base 2 is a position where the coiling force of the compression coil spring 333 of each of the shock absorbing units (! 4), the recoiling force of the spring plates 61 and 62, and the load of the base become each other. to be.

Therefore, the disc recording and reproducing apparatus of the present invention is capable of reducing the resonance frequency fo of the vibration system including the base 2 and the cartridge holder 3 so as to sufficiently absorb the vibration by the shock absorbing unit 14. Can be achieved. On the other hand, the shock absorber 334 is subjected to less deformation caused by supporting the base 2, which makes it less susceptible to cracking and thus improves durability. In addition, since the base 2 and the cartridge holder 3 are supported while being clamped between the rounding unit 14 and the spring plates 61 and 62, the neutral position (the position in the stopped state) and the frame 1 It is possible to maintain the relative position. In addition, since the cartridge holder 3 is pressed against the upper surface of the base 2 by the spring plates 61 and 62, the disc cartridges 220 and 221 are pressed against the base 2, and thus the disc cartridges 220 and 221 are base. It is possible to pressurize and support against (2) fixedly. The pressing force of the disc cartridge is about 200 gf.

The foremost end of the spring plates 61 and 62 is fixed with a vibration absorbing material such as rubber which lies between the spring plates 61 and 62 and the upper surface of the cartridge holder 3.

The interior of the outer lid 5 consists of an adjacent piece 198 as shown in FIG. The outer cover 5 is mounted to the frame 1 and the adjacent piece 198 protrudes into the frame 1. Adjacent piece 198 is located above base 2 to limit upward movement of the base. Thus, when the lid 700 rotates upward to open the upper surface of the main body of the device, the base 2 deflects upwards under the deflection of each compression coil spring 333 of the shock absorbing unit 14. And lateral edges are pressed against the adjacent piece 198.

[Modification of Shock Absorbing Units Used in Recording and Playback Devices]

42 shows a variant of the shock absorbing unit 14 configured for supporting the base by the frame 1 in a floating state.

According to FIG. 42, the buffer unit 14 has an axis 330 set in such a manner as to hang on the lower surface of the base 2. The shaft 330 has a first flange 331 on an adjacent portion located at the top of FIG. 42 and a second flange 332a at the lower end of FIG. 42.

The shaft 330 has an adjacent end as a mounting portion 330a for mounting to the base 2, as shown in FIGS. 42 and 45. The mount has a caulking recess 330c formed from an adjacent end. The mounting portion is mounted on the base by coking, which is introduced into the mounting opening of the base and deforms the periphery outside the caulking recess 330c. When the mounting portion 330a is mounted on the base 2, the first flange 331 is pressed against the base 2. The shaft portion passing through the first flange 331 is a columnar pivot 330b. The distal end of the pivot is female threaded along the axis. The opening edge portion of the female screw 330d is chamfered to form a tapered portion 330e.

The second flange 332a is formed as the head of the set screw 332 having the central threaded portion 332d and is engaged with the threaded portion 332a of the shaft 330 as shown in FIGS. 42 to 44. 332c is mounted to the distal end of the pivot 330b. A cross slot 332b engaged by a screw driver is formed on the side opposite the head 332a on the side having the threaded portion.

Adjacent ends of the screw portions 332d continuous up to the second flange 332a are not formed with screw screws, but are formed as conical large-diameter portions 332c having a larger diameter in the second flange 332a. The surface shape of the large-diameter portion 332c has a tapered or arc-shaped cross-sectional area of which the cross section of the screw portion along the axis is linear as shown in FIG.

The distal end of the threaded portion 332d is formed coaxially with the cylindrical guide portion 332e having a diameter smaller than the continuation of the threaded portion 332d. The guide portion 332e has a spherical foremost end.

A shock absorber 334 is positioned between the first flange 331 and the second flange 332a as a vibration absorber. The shock absorber 334, which is composed of a bisco-elastic material such as butyl rubber, is cylindrical and has a central bore penetrated by the pivot 330b, and the upper and lower ends thereof have a first flange 331 and a second flange 332a; Adjacent to each other. The shock absorber 334 is fixed between the first flange 331 and the second flange 332a by being fixed to the outer axis of the pivot 330b of the shaft 330 and then screwing the set screw 332 on the shaft 330. maintain. The shock absorber 334 has an engaging groove on the outer circumferential surface surrounding the shock absorber 334. This engagement groove meshes with the inner circumferential edge of the support openings 194-197 drilled through the support pieces 190-193. The function of the shock absorber 334 is to absorb the vibration transmitted through the frame 1 to prevent the vibration transmitted to the base 2.

The shock absorbing unit 14 has a compression coil spring 333 as a first elastic member fixed to the outside of the shock absorber 334 and positioned between the lower face of the base and the upper face of the support pieces 190 to 193 of the frame 1. Have The compression coil spring 333 presses and supports the base with elastic force. An end of the compression coil spring 333 facing the base 2 is fixed to the outside of the first flange 331.

When the set screw 332 is mounted on the shaft 330, its large diameter portion 332c is pushed into the tapered portion 330e, and the threaded portion 332d has a second flange 332a pivoted on the shaft 330. It is screwed into both threads of shaft 330 with a pre-set torque until pressed against the distal end of 330b. The large diameter portion 332c presses the tapered portion 330e outward to deform the distal end of the pivot 330b at this time. Such deformation of the distal end of the pivot 330b is effective for gripping the large diameter portion 332c to prevent the large diameter portion from being extracted from the shaft.

In order to screw the set screw 332 onto the shaft 330, the battery guide 332e is fitted with a female screw 330d. The guide portion is smaller in diameter than the female screw 330d and has a spherical end, and is easily fixed to the female screw 330d. After the guide portion 332e is fitted with the female screw, the center screw portion 332d is easily screwed with the female screw 330d by rotating the set screw.

The outer circumferential surface of the first flange 331 has a conical shape which decreases in diameter toward the base 2 to prevent separation of the compression coil spring 333.

[Configuration of the lid]

The lid 700 of the recording and reproducing apparatus is composed of a lid support plate 4 and an upper lid 7 as shown in FIG. The lid support plate 4 is made of a metal plate material, and consists of an attachment plate portion 58 rotatably mounted through the pivot 59 on the abacus portion and the rear edge of the abacus portion. The attachment plate portion 58 is screwed to the rear edge of the battery casing 8 by so-called co-tightness along the lower cover 6. The main surface plate of the lid support plate 4 is supported above the base 2 to cover the top surface of the cartridge holder. The main surface plate of the lid support plate 4 is rotatable toward or away from the top surface of the cartridge holder 3. The top cover 7 is mounted on the top surface of the main surface plate of the cover support plate 4 to cover the main surface plate.

The link mounting plate 53 is mounted to hang from the side of the main surface plate of the lid support plate 4, as shown in FIG. The second click stop link 45 has a rear edge rotatably mounted to the link mounting plate 53 via the pivot 46. The second link stop link 45 has a front end that engages the engagement opening 51 of the click stop piece 50 mounted straight to the upper edge of the flange 1. The engaged opening 51 is elliptical having a long axis along the front and rear direction and supports the front end of the second click stop link 45 in such a way that the longitudinal movement and rotation of the second click stop link 45 is possible. A click stop lug 49 is formed near the front end of the second click stop link 45. The click stop piece 50 has a click stop opening 52 in front of the engagement opening 51. When the lid 700 seals the upper end of the base 2, the click stop lug 49 is shown in FIG. 9 so that the front end of the second click stop link 45 engages the engagement opening 51. And rotates about pivot 45 for engagement of click stop lug 49 and click periodic opening 52, as shown in FIG. The lid 700 is then held in the open position as shown in FIG. 12.

The retaining member 301 is mounted to protrude inside the vicinity of the front edge of the upper lid 7, as shown in FIGS. 25 to 27. As shown in FIG. 25, the retaining member 301 is provided by a lock lever 115 created in front of the main frame 1 to hold the lid 700 in a state covering the upper surface of the main body of the apparatus. maintain.

The lock lever 115 is vertical to allow the support pieces 163 and 164 fitted to the front surface of the frame 1 to flow in, and the lock lever 115 slides laterally with respect to the frame 1 as shown in FIG. Support slits 177 and 178. The upper end of the lock piece 181 is hooked, ie it has a retaining portion 182 that is bent oppositely and is directed downward. When the lid 700 is in the position covering the main body of the device, the lock lever 115 retains the retaining member 182 to squeeze the opening of the lid 700, as shown in FIG. 26. To the top edge of the The lock lever 115 has a spring loaded opening between the support slits 177, 178. The lock lever 115 is deflected by the compression coil spring 168 mounted in the spring-loaded opening 179 in the direction indicated by the arrow T1 in FIG. 20 and held in a position capable of holding the retaining member 301. do. The compression coil spring 168 has one end that engages in the spring engagement piece 180 at the corner of the spring mounting opening 179, while the other end is an edge of the spring mounting opening 256 formed in the front of the frame 1. Is engaged with the spring retaining piece 157.

The lock piece 181 has an opposite side of the upper end tapered upwardly inclined, and as shown in FIG. 25, when the lid 700 is in a position covering the upper surface of the apparatus main body, 181 has a tapered portion pushed by the retaining member 301 to move the lock lever 115 in the direction of the arrow% of FIG. When the lid 700 covers the upper part of the main body of the device, the lock piece 181 is used up to the upper position of the retaining member 301 so that the lock piece 181 has a deflection force of the compression coil spring 168, and thus The retention returns to the initial position indicated by the arrow Y in FIG.

The release lever 116 has support slits 170 and 174 extending in the longitudinal direction and is supported by the support pins 162 and 167 set in front of the frame 1 passing through the support slits 170 and 174 to the side of the frame 1. Is supported for the slide. The release lever 116 has an opening 171 in the middle of mating with the lock lever 115 so as not to be adjacent to the lock lever 115. The opposite edge of the opening 171 has an adjacent portion 176 abutting the opposite end of the lock lever 115. The release lever 116 has a spring loaded opening 712 between the opening 171 and the slit 174. The release lever is deflected by the compression coil spring 172 mounted to the spring-loaded opening 172 in the direction indicated by the arrow T1 and forms a gap between the adjacent portion 176 and the opposite end of the lock lever 115. Can be located in any position. The compression coil spring 169 has one end that engages with the spring engagement piece 173 at one corner of the spring loaded opening 172, and the spring at one corner of the spring loaded opening 159 formed in the front of the frame 1. It has the other end that engages with the engagement piece 160.

The detection pin 183 is mounted straight to the foremost rear of the lock piece 181, as shown in FIG. A powered arm 84 and lid lock detection switch 60 are mounted near the front edge of the top surface of the lid support plate 4. The lid lock detection switch 60 has a pusher formed at one end. The powered arm 64 has a pressing portion 200 on one end located above the holding member 301 and has a pressing portion 199 at the other end in contact with the pusher of the lid lock detection switch 160. When the lock piece 181 holds the retaining member 301, the detection pin 183 presses the pressing part 200 of the electric arm 64, which pushes the pusher of the lid lock detecting switch 160 to the pressing part ( 199). When the lid 700 does not completely seal the upper surface of the device main body, or the lid 700 is in a closed position as shown in FIG. 27, the lock lever 115 is pressed into the compression coil spring 168. When sliding against the deflection of, the lid lock detection switch 160 is not activated. That is, the covering of the lid 700 and the holding of the retaining member 301 by the lock lever 115 are detected by detecting the pressurization state of the lid lock detecting switch 160. The lid lock detection switch 160 is electrically connected by a switch B shown in FIG.

A discharge transmission member 95 is mounted on the front end of the magnetic head lifting lever 94 as shown in FIGS. 15 to 17. The discharge transmission member 95 has a magnetic head lifting lever by the mounting openings 103 and 102 having front and rear mounting openings 103 and 102 and penetrated by the front and rear support plates 101 and 100 set straight on the magnetic head lifting lever 94. 94 is mounted. The front mounting opening 103 is larger in diameter than the front support pin 101 by the front-rear direction and the reverse direction is considered. The rear mounting opening 102 is an elliptical hole having a longitudinal direction as a longitudinal direction and coincides in diameter with the rear support pin 100 as long as the reverse direction is considered. That is, the discharge transmission member 95 is rotatable about the magnetic head lifting lever 94 about the rear end as the center of rotation as indicated by the arrow of FIG. 15, while the forward and backward as indicated by the arrow V of FIG. It can slide in the direction. The discharge transmission member 95 is initially positioned by a tension coil spring 105 mounted between a spring retainer 106 set straight in front and a spring retainer 194 set straight in front of the magnetic head lifting lever 94. Is located in. The initial position of the emission vibration member 95 is a position that moves forward with respect to the magnetic head lifting lever 94, and has a front end that rotates toward the opposite side, that is, in the direction opposite to the arrow U of FIG. .

The discharge transmission piece 113 is set straight on the front end of the emission transmission member 95. When the magnetic head lifting lever 94 slides forward and when the magnetic head 13 is held in the upper position, the discharge transmission piece 113 is formed with a through hole and a frame formed at the front edge of the base 2. It protrudes past the front of the frame 1 through the through hole 154 formed in the front of 1). At this time, the discharge transmission piece 113 is fitted between the opposite end of the lock lever 115 and the junction 176 of the release lever 116 as shown in FIG. If, at this time, the discharge furnace 17 is actuated and the discharge lever 116 is slid towards the side in the direction indicated by the arrow C of FIG. 15 with respect to the deflection of the compression coil spring 169, the discharge transmission piece ( 113 rotates in the direction indicated by the arrow U of FIG. 15, and at the same time, the lock lever 115 moves to the arrow C of FIG. 15 to release the holding of the lock lever 115 with respect to the retaining member 301. It slides toward the above-described lateral direction as indicated direction.

When the magnetic head lifting lever 94 is slid backwards as shown in FIGS. 16 and 17, the discharge transmission piece 113 is disposed at the opposite end of the lock lever 115 and adjacent to the release lever 116 ( 176) Retreat through the space between. In that case, the adjoining portion 176 is not adjacent to the ejection transmission piece 113 when the ejection furnace 17 is actuated and the ejection lever 116 slides in the above-described lateral direction, and thus the ejection transmission piece ( 113 does not rotate. In other words, the lock lever 115 is not slid and its holding on the retaining member 301 is not released.

In the regeneration mode, the magnetic head lifting lever 94 retracts the discharge transmission piece 113 from the space between the lock lever 115 and the adjacent portion 176 but the magnetic head 13 is shown in FIG. As in a first position that is held in its upper position. In the recording mode, the magnetic head lifting lever 94 retracts the discharge transmission piece 113 from the space between the lock lever 115 and the adjacent portion 176 and the magnetic head 13 is shown in FIG. It is in a second position that rotates downward.

If the magnetic head lifting lever 94 moves backwards, while the ejecting lever 116 slides and the magnetic head lifting 94 moves forward in this state, the ejection transmission piece 113 will release the eject lever 116. Pressurized on). In this case, the discharge transmission member 95 is positioned at a position where the discharge transmission piece 113 is pressed on the release lever 116 under the deflection of the tension coil spring 105 even when the magnetic head lifting lever 94 moves forward. maintain. When the discharge lever 116 returns to the initial position, the discharge transmission member 95 has the discharge transmission piece 113 at the opposite end of the lock lever 115 and the release lever to return to the initial position of the magnetic head lifting lever 94. It fits into the space between adjacent portions 176 of 116.

On both side edges of the lid support plate 4, cartridge suspension engagement pieces 55 and 56 are formed as shown in FIG. The cartridge suspension engagement piece 56 is integrally formed with the lid support plate 4 and has a hook shape to bend backward. The upper edge of the hooked bend of the cartridge hanging engagement piece 56 is configured as a suspension. The cartridge suspension engagement piece 55 has a proximal portion 60 rotatably mounted in the lid support plate 4, while the distal end is bent backward in the form of a hook, as shown in FIG. The upper edge of the hooked bend of the cartridge suspension engagement piece 55 is configured as a suspension 57. Suspensions 57 and 58 of these suspension engagement pieces 55 and 56 engage engagement portions 118 and 120 protrudingly mounted on both sides of the cartridge holder 3. When the lid 700 covers the top surface of the device main body, these suspension engagement pieces 55 and 56 suspend the cartridge holder 3 as shown in FIG. 12 and rotate about the base. At this time, the cartridge holder 3 is spaced from the top surface of the base 2 and comes into contact with the front part whose front edge is at a position below the front edge of the top cover 7. The lid support plate 4 and the cartridge holder 3 are held in the rotational position by the click stop links 24, 25.

Suspension engagement piece 55 is cover support plate 47 through pivot 65, as shown in FIGS. 10 and 33-35 of an adjacent portion bent along the lower surface of cover support plate 4. ) Is rotatably mounted adjacent to. The pivot 65 is perpendicular to the major surface of the lid support plate 4 and is located at the front edge of the suspension engagement piece 55. Thus, the suspension engagement piece 55 is rotatable so that the rear edges indicated by arrows F in FIGS. 10 and 33 move outwards. The suspension engagement piece 55 is provided on the cover support plate 4 and the cover support plate 4 and is provided with a spring retainer 68 provided on an adjacent portion of the soft engagement piece 55 extending along the spring retainer 69. The tension coil spring 67 mounted therebetween is rotatably deflected in the direction indicated by the arrow D in FIG. The suspension engagement piece 55 is positioned at an initial position by the adjacent portion 68 adjacent to the adjacent portion 70 provided in the lid support plate 4. The proximal portion 66 of the suspension engagement piece 55 is sector-shaped about the pivot 65 and the rear edge is slidably supported by the support piece 337.

Suspended engagement piece 55 supported for rotation when the shock absorbing unit 14 is elastically deformed by vibration or shock applied to the main body of the device, that is, when the cartridge holder 3 is moved relative to the frame 1. ) Pressurizes the cartridge holder 3 and elastically rotates outward. Thus, the cartridge holder 3 is prevented from moving under vibration even when the suspension engaging piece 55 approaches and contacts the cartridge holder 3. The opposite side of the frame 1 has a bend 336 extending outward to achieve rotation of the suspension engagement piece 55.

Since the disc recording and reproducing apparatus of the present invention is rotatable, the apparatus is small in size while maintaining a sufficient moving range by shock absorption due to the elastic deformation of the cartridge holder 3 and the buffer unit 14 for the base 2. You can do That is, if the possible moving range of the cartridge holder 3 is 0.8 mm and the suspension engagement piece 55 is fixed to the cover support plate 4, the gap between the side of the cartridge holder 3 and the suspension engagement piece 55 is closed. While it is necessary to maintain 0.8 mm, a 0.8 mm gap is required between the suspension engagement piece 55 and the distal end of the engaging portion 118 that engages with the inner wall of the top cover 7 so that at least 1.6 mm plus cartridge holder ( It is necessary to provide a gap in the thickness of the suspension engaging piece 55 between the side of 3) and the inner wall of the upper lid 7. In the disc recording and reproducing apparatus of the present invention, if a possible moving range of 0.8 mm is required for the cartridge holder 3, the suspension engagement piece 55 is movable relative to the lid support plate 4, and thus a gap of 0.8 mm. As shown in FIG. 34, a suspension engagement piece 55 is required between the distal end of the engagement portion 118 and the inner wall of the lid support plate 7. However, no gap is required between the side of the cartridge holder 3 and the inner wall of the lid support plate 7, and the suspension engagement between the 0.8 mm plus side of the cartridge holder 3 and the inner wall of the lid support plate 7. The thickness of the piece 55 is sufficient. However, in the disc recording and reproducing apparatus of the present invention, since the movable range of the cartridge holder 3 is 0.8 mm, the gap between the side face of the cartridge holder 3 and the hanging engagement piece 55 is given as 0.4 mm. The distance between the side of the cartridge holder 3 and the inner wall of the lid support plate 7 is sufficient, such as the thickness of the 0.8 mm plus suspension engagement piece 55.

The suspension engagement pieces 55 and 56 are rotatable only on one side with respect to the lid support plate 4, but the same configuration is used on both sides so that each of the suspension engagement pieces is rotatable relative to the lid support plate 4.

[Status in Stop Mode]

If the above-described disc recording and reproducing apparatus according to the present invention is in the stop mode, none of the disc cartridges 220 or 221 are loaded and the magnetic head lifting lever 94 is in the forward initial position as shown in FIG. Will be. At this time, when the release furnace 17 is operated, the lock lever 115 slides to release the retaining of the lock piece 181 by the retaining member 301 for the lid 700.

Since the cartridge loading detection switch 72 is not pressurized, the disc drive unit 339 is not driven by the central processing unit (CPU) 338 even when the key input unit 15 is operated.

According to the flowchart of FIG. 37, the flowchart starts with powering up in step 1, and the central processing unit (CPU) 338 determines whether an input is made to the key input unit 15 in step 2. If there is no input to the key input unit 15, the process proceeds to step 6 for regression. In step 3, it is checked whether the cartridge load detection switch (switch A, 72) is activated. If the cartridge load detection switch 72 is activated, if not, proceed to step 6 for regression. In step 4, if the lid lock detection switch (switch R, 160) is actuated, proceed to step 5, otherwise proceed to step 6 for regression. In step 5, the central processing unit (CPU) 338 reacts to the operation of the key input unit 15 to control the drive of the disk drive unit 339.

[Loading Disc Cartridge]

In order to load the disc cartridge 220 or 221 in the disc recording / reproducing apparatus of the present invention, the discharge furnace 17 is operated as described above, and then the lid 700 is shown in FIG. The device rotates upwards to the upper position of the main body. The disc cartridge 220 or 221 is introduced into the cartridge holder 3 from the front side. When any of the disc cartridges 220 or 221 is introduced into the cartridge holder 3, the shutter members 206 and 217 formed in the cartridge main body 205 or 216 open the openings 222 and 223 formed in the cartridge main bodies 205 and 215. To move. When the lid 700 rotates downward to seal the device main body, the disc cartridge 220 or 221 is loaded at a position on the base 2, as shown in FIG. The cartridge load detection switch 72 is then pressed by the loaded disk cartridge 220 or 221 to detect that either of the disk cartridges 220 or 221 has been loaded. By the lid 700 being held by the lock lever 115, the lid lock detection switch 16 is pressed to detect that the main body of the device is sealed by the lid 700. In this state, if the key has any input to the input unit 15, the central processing unit (CPU) 338 can control the drive of the disk drive unit 339.

[Status in Playback Mode]

After any of the disc cartridges 220 or 221 has been loaded, if the lid lock detection switch 160 detects that the main body of the device is sealed by the lid 700, a command signal to enter the playback mode is entered. Flows into the unit 15, the central processing unit (CPU) 338 operates to rotate the stepping motor 85, and sets the magnetic head 13 to the first upper position as shown in FIG. To move the magnetic head lifting lever 94 backwards as indicated by arrow Z of FIG. 16 to position the discharge transmission piece 113 behind the lock lever 115. In this state, when the magneto-optical disk or the optical disk 201 is rotated by the spindle motor 89 and the optical pickup 10 moves in the radial direction of the magneto-optical disk 200 or the optical disk 201, the magnetic The information signal recorded on the optical disc 200 or the optical disc 201 is reproduced. When the track jump buttons 30 and 31 or the stop button 32 are actuated, the track jumps or stops toward the inner or outer edge of the magnetic-optical disk 200 or the optical disk 201. When the release lever 116 slides temporarily during the regeneration mode operation, the discharge transmission piece 113 retracts so that the lock control 115 does not slide, and thus the holding of the lid 700 is not released. When the stop button 29 is operated for the setting of the stop mode, the magnetic head lifting lever 94 allows the lid 700 to be released by the lock lever 116 by actuation of the release lever 116. Reset to the forward initial position.

[State during recording mode]

At the time of selecting the recording mode of the recording information signal, the recording / reproducing disc cartridge 220 is loaded. After the disc cartridge 220 is loaded and the lid lock detection switch 160 detects that the main body of the apparatus is sealed by the lid 700, the command signal for starting the recording mode and the key input unit 15 are input. Input, the central processing unit (CPU) 338 is operated to rotate the stepping motor 338 to move rearward, as indicated by the arrow Z in the 17th degree of the magnetic head lifting lever 94. do. Thus, the discharge transmission piece 113 moves to the second position as shown in FIG. 17, in which the emission transmission piece 113 is behind the lock lever 115 and the magnetic head 13 moves to the lower position.

In this state, the magneto-optical disk 200 is rotated by the spindle motor 89, and the optical pickup 10 and the magnetic head 13 are magneto-optical for recording information signals on the magneto-optical disk 200. It moves integrally along the radius of the optical disc 200. During the recording mode, the magnetic head 13 moves across the inner and outer edges of the magneto-optical disk 200 while accessing or connecting the magneto-optical disk 200. At this time, by actuating the track jump buttons 30, 31 or the stop button 32, the track is directed or stopped at the inner or outer edge of the magneto-optical disk 200. FIG. During the regeneration mode, if the release lever 116 is temporarily called, the retracting transmission piece 119 is retracted so that the lock lever 115 does not slide and thus the retention of the lid 700 is not released. If the device button 29 is operated to set the stop mode, TOC information indicating an address is recorded as a discrimination signal for the information signal recorded so far. After the end of the recording of the TOC information, the locking of the lid 700 by the lock lever 116 is possible by the reset of the magnetic head lifting lever 94 and the operation of the release lever 116.

When the replay-only disc cartridge 221 or the recording / playback disc cartridge 220 in which the recording of the information signal is prevented by the operation of the error recording prevention mechanism 214 is loaded, the disc cartridge currently loaded is instructed to start the recording mode. Even if this key is introduced by the input unit 15, it is determined that it cannot be written by the detection output detecting the discrimination opening 224 formed in the disc cartridge 220 or 221. Therefore, the recording mode is not set by the central processing unit (CPU) 338.

[Discharge of Disc Cartridge]

In the disc recording / reproducing apparatus of the present invention, if the stop mode is set after the end of the information signal from the disc cartridge 220 or 221 or the end of the information signal on the magneto-optical disc 200, the disc recording / playing apparatus is The loaded disc cartridge 220 or 221 may be ejected.

That is, during the stop mode, if the release furnace 17 is operated to slide the release lever 116 toward one side, the locking of the lid 700 by the lock lever 115 is released, and the lid 700 is The device is rotatable upwards of the main body. When the lid 700 is released and rotated above the main body of the device, the cartridge holder 3 rotates upward and follows the lid 700 to be separated from the base 2 as shown in FIG. The disc cartridge 220 or 221 held in the cartridge holder 3 is raised above the base 2 and pressed by the cartridge release lever 302 toward the front of the cartridge holder 3 so that the disc cartridge 220 or 221 can be pressed. It comes out of the cartridge holder (3). In the disc cartridge 220 or 221 extracted from the cartridge holder 3, the shutter member 206 or 217 is attached to the shutter cover spring 133 to cover the number 222 or 223 of the cartridge main body 205 or 216. Pressurized and deflected.

Claims (18)

A base member as a main casing, a recording and reproducing unit mounted on the base through a plurality of buffer units, a cover member as a lid support plate, which is electrically mounted on the base for receiving the recording and reproducing unit, and a recording and reproducing unit; A recording and reproducing apparatus for a recording medium having a leaf spring as a first elastic member mounted between a lid member and a recording and reproducing unit for deflecting the light toward the base, When the lid member is in a position covering the recording and reproducing unit, the recording and reproducing unit is maintained at a position where the weight of the recording and reproducing unit and the elastic force of the cushioning means and the elastic force of the first elastic member are respectively balanced with each other. A recording and reproducing apparatus for a recording medium. The method of claim 1, And the shock absorbing means includes a vibration absorbing material and an elastic member arranged outside the vibration absorbing member. The method of claim 2, And a support member on which the recording and reproducing unit is arranged, wherein the resilient member is arranged between the base and the supporting member to bias the recording and reproducing unit toward the lid member against the deflection of the first elastic member. Recording and playback apparatus for media. The method of claim 3, A recording and reproducing apparatus for a recording medium, characterized in that an engaging recess engaged by the base is formed in the vibration absorbing member. The method of claim 2, And a supporting member on which the recording and reproducing unit is arranged, wherein the buffer means has a mounting member having one end mounted on the supporting member and penetrated by the vibration absorbing member, and a pair for supporting both ends of the vibration absorbing member. And a rest of the recording and reproducing apparatus for a recording medium. The method of claim 5, And an engaging recess engaged by the vibration absorbing member and the base. The method of claim 5, The vibration absorbing member is provided on one side of the engagement recess and engagement recess engaged by the base and on which the elastic member is fixed, and on the other side of the engagement recess and of larger diameter than the first cylinder portion. And a second cylindrical portion, wherein the vibration absorbing member is integrally formed by the engaging recess and the first and second cylindrical portions. In the shock absorber, An axis-shaped member having one end fixed to the movable portion and the other end consisting of a flanged first rest portion, A central through hole for receiving the axial-shaped member, a first cylindrical portion provided on one side of the engaging recess along the axis of the axial-shaped member and to which the elastic member is fixed, and the engaging recess along the axis of the axial-shaped member And a vibration absorbing member provided on the other side of the second cylindrical portion having a diameter larger than that of the first cylindrical portion and smaller than the first wrist, and formed integrally by the engagement recess and the first and second cylindrical portions. Shock absorber. The method of claim 8, Wherein the axial-shaped member has a flange-shaped rest adjacent to the movable portion, one rest bears the distal end of the first portion and the other rest bears the distal end of the second portion. The method of claim 9, And a resilient member arranged between the moving portion and the fixing portion and fixed to the outside of the vibration absorbing material for deflecting the moving portion and the fixing portion in a direction away from each other. A holder movably mounted to the main body of the apparatus via a plurality of buffer units, the holder rotatably mounted to grip and load or dismount the recording medium on or from the recording and reproducing unit, and the apparatus for covering the recording and reproducing unit Rotating member rotatably mounted to the main body and mounted on the inner surface of the rotating member for engagement with the holder and rotating the holder in the direction of loading or detaching the recording medium by moving the opening of the rotating member and moving to the rotating member A recording and recording apparatus for a recording medium comprising a finely movable recording and reproducing unit having an engaging member (suspension portion for a lid support member) that is possibly mounted. When the rotating member covers the recording and reproducing unit, the recording and reproducing unit is finely moved in the apparatus main body so that the recording and reproducing unit is in contact with the engaging member and the engaging member is moved to track the fine movement of the rotating member. A recording and reproducing apparatus for a recording medium. The method of claim 11, And a deflection member for deflecting the engagement member in the direction of permanent engagement with the holder. The method of claim 12, And an engaging member is rotatably mounted to an adjacent end of the rotating member in a deflected state by the biasing member in the engaging direction with the engaging portion of the free end projecting toward the holder for engaging with the holder. Playback device. A recording and reproducing unit having a frame, a holder for rotatably recording the casing and the recording medium to the casing, and supported by a buffer member on the frame, and rotatably mounted to the frame and sealing the holder side of the recording and reproducing unit. A lid comprising a lid covered in a state and an engagement member arranged on the lid side in contact with the holder and engaged with the holder at the lid opening for rotating the holder with respect to the casing in a direction away from the casing and supported for movement with the lid. In the recording and reproducing apparatus for a medium, When the lid is in the closed state, the recording and reproducing unit moves relative to the frame under deformation of the cushioning member, and the engaging member moves to track the movement of the recording and reproducing unit when the recording and reproducing unit is adjacent to the engaging member. Recording and reproducing apparatus for a recording medium. The method of claim 14, And an elastic member arranged between the lids, wherein the engagement member is provided on the lid so as to be resiliently deflected in one direction by the elastic member and placed in a pre-set relative position to the recording and reproducing unit in a neutral state. A recording and reproducing apparatus for a recording medium, which is adjacent to the positioning member. When the frame, the recording and reproducing unit supported by the frame through the first elastic member and the vibration absorbing member, and when the lid and the lid covering the recording and reproducing unit are rotatably supported and sealed by the frame, are in a closed state. A recording and reproducing apparatus for a recording medium comprising a second elastic member positioned between a lid and a recording and reproducing unit, And when the lid is in the closed state, the recording and reproducing unit is held at a position where the weight of the recording and reproducing unit and the elastic force of the first elastic member and the elastic force of the second elastic member are respectively balanced with each other. Recording and playback device. In the shock absorber, A shaft portion having a screw opening along a central axis of the proximal end and the distal end mounted to the member; A cylindrical vibration absorbing member supported by being fixed to the shaft portion and configured to support the other member at the outer circumferential surface thereof; A set screw having a screw portion engaged with the tab hole at the distal end of the shaft portion, a screw successive to the thread portion for preventing deviation from the shaft portion passing through the vibration absorbing member and the distal end portion, and a conical large diameter portion having a diameter larger at the head side at the adjacent end portion; And the large diameter portion has a larger diameter at the distal end of the shaft portion when the screw portion is engaged in the tapered hole of the shaft portion to prevent loosening in the tapered hole. The method of claim 17, And said set screw has a cylindrical guide portion extending to the distal end of said threaded portion, said guide portion having a diameter smaller than the valley of said threaded portion.