WO1996026517A1 - Dispositif electronique tel qu'un dispositif d'enregistrement et/ou de reproduction pour un support d'enregistrement - Google Patents
Dispositif electronique tel qu'un dispositif d'enregistrement et/ou de reproduction pour un support d'enregistrement Download PDFInfo
- Publication number
- WO1996026517A1 WO1996026517A1 PCT/JP1996/000429 JP9600429W WO9626517A1 WO 1996026517 A1 WO1996026517 A1 WO 1996026517A1 JP 9600429 W JP9600429 W JP 9600429W WO 9626517 A1 WO9626517 A1 WO 9626517A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- recording
- housing
- magnesium
- attached
- reproducing
- Prior art date
Links
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000011777 magnesium Substances 0.000 claims abstract description 42
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 42
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 40
- 238000004512 die casting Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims 1
- 238000000638 solvent extraction Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 32
- 238000010521 absorption reaction Methods 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 229910001297 Zn alloy Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
- G11B33/121—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a single recording/reproducing device
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/08—Insulation or absorption of undesired vibrations or sounds
Definitions
- the present invention relates to a recording medium, such as an optical disc or a magnetic tape, on which an information signal is recorded.
- the present invention relates to a recording and / or reproducing unit for performing recording and / or reproduction of an electronic device, and an electronic device such as a recording and Z or a reproducing device containing an electroacoustic transducer such as a speaker unit and a microphone unit.
- an electronic device such as a recording and Z or a reproducing device containing an electroacoustic transducer such as a speaker unit and a microphone unit.
- BACKGROUND ART Conventionally, a disk recording and / or reproducing apparatus or a tape recording and / or reproducing apparatus for recording and / or reproducing an information signal on a recording medium such as an optical disk or a magnetic tape on which an information signal is recorded. Of electronic devices are used.
- an electronic device whose housing is formed of a metal material is used.
- Aluminum (A1) alloy, titanium (Ti) alloy, zinc (Zn) alloy, and the like are used as metal materials for forming the housing.
- the housing made of these metallic materials is formed by breathing a thin aluminum alloy or titanium alloy.
- a housing made of a zinc alloy or an aluminum alloy it is formed by die-casting these metallic materials.
- the housing is formed by pressing using a metal plate material such as an aluminum alloy or a titanium alloy, a tape driving unit or a disk recording and / or reproducing unit stored in the housing. Further, it is not possible to integrally form a support member for supporting the circuit board and a fixing portion for attaching a screw for fixing these members. Therefore, when using a housing formed by pressing a metal plate material, a mounting member formed by molding a synthetic resin separately from the housing is prepared, and a tape drive is performed via the mounting member. Unit and disc recording and / or playback unit. In this case, the housing is also fixed to the mounting member.
- a metal plate material such as an aluminum alloy or a titanium alloy
- a tape driving unit or a disk recording and / or reproducing unit stored in the housing it is not possible to integrally form a support member for supporting the circuit board and a fixing portion for attaching a screw for fixing these members. Therefore, when using a housing formed by pressing a metal plate material, a mounting member formed by molding a synthetic resin separately from
- the casing When the casing is formed by die-casting a zinc alloy or an aluminum alloy, a tape drive unit or a disk recording and / or reproducing unit is required. Since the mounting portion for mounting the components can be formed integrally with the housing, it is not necessary to use a separate mounting member, so that the number of parts can be reduced. As the weight of the device increases, the weight of the device itself increases. That is, the specific gravity of zinc is approximately 6.6, and the specific gravity of both metal and aluminum, which has a relatively small specific gravity, is 2.7. Therefore, this type of metal alloy is die-cast and the mounting member is mounted. When the components are integrally formed, the amount of materials used increases, and the weight of the casing increases.
- the vibration generated when the speaker unit is driven cannot be sufficiently absorbed, and the reproduced sound has good sound quality. It becomes difficult to obtain In other words, when the speaker unit is attached to the metal housing via the mounting member, it is difficult to firmly fix the speaker unit to the housing, and the speaker unit is driven. In this case, unnecessary vibration is generated and the sound quality is degraded.
- For electronic devices that have a mounting member for mounting a speaker unit, etc., inside the housing it is difficult to provide a space inside the housing that is sufficient to attenuate the sound radiated from the back of the speaker unit. Therefore, it is difficult to realize good reproduction characteristics.
- An object of the present invention is to provide an electronic device such as a recording and / or reproducing device for a recording medium capable of ensuring a sufficient mechanical strength while realizing a reduction in the weight of the device itself. is there.
- Another object of the present invention is to stabilize an information signal by attenuating vibration transmitted to a tape drive unit or a disk recording and / or reproducing unit for recording and / or reproducing an information signal stored in a housing.
- An electronic device such as a recording and / or reproducing device capable of realizing the recording and / or reproduction of the information is provided.
- Still another object of the present invention is to provide a device having a built-in vibration source such as a speaker unit, in which vibration from the vibration source is transmitted to a tape drive unit and a disk recording and / or reproduction unit. It is an object of the present invention to provide an electronic device such as a recording and / or reproducing device which can prevent and realize stable recording and / or reproduction of an information signal.
- Still another object of the present invention is to apply an electronic device capable of improving the reproduction characteristics of a speaker unit built in a housing.
- Still another object of the present invention is to provide an electronic device such as a recording and / or reproducing device capable of improving the sound collection characteristics of a micro microphone unit incorporated in a housing. .
- a recording and / or reproducing apparatus for a recording medium as a slave device includes a recording and / or reproducing section for recording and / or reproducing the recording medium, and a housing for accommodating the recording and / or reproducing section.
- this housing is formed by die-casting magnesium or magnesium alloy or magnesium or magnesium alloy.
- an electronic device includes an electronic circuit, an electro-acoustic converter such as a speaker unit that converts a signal output from the electronic circuit into an audible sound, and a housing to which the electro-acoustic converter is attached. At least a part of the housing is formed by die-casting magnesium or magnesium alloy or magnesium or a magnesium alloy.
- the recording and / or reproducing apparatus for a recording medium is provided with an output signal from a microphone mouth unit and at least an output signal from a microphone unit, and recording and / or recording on the recording medium.
- a recording and / or reproducing unit for reproduction and a housing for accommodating the recording and / or reproducing unit and for mounting the micro-unit are provided, and at least the micro-unit is mounted in the housing.
- the part to be formed is formed by die-casting magnesium or magnesium alloy, or magnesium or magnesium alloy.
- the recording and / or reproducing apparatus for a recording medium includes a recording and / or reproducing unit for recording and / or reproducing on the recording medium, and an output signal from the recording and / or reproducing unit.
- a recording and / or reproducing unit for recording and / or reproducing on the recording medium, and an output signal from the recording and / or reproducing unit.
- a speaker unit to be supplied and a housing for accommodating the recording and / or reproducing unit and to which the speaker unit is attached at least the speaker unit
- the portion to which is attached is formed by die-casting magnesium or a magnesium alloy or magnesium or a magnesium alloy.
- the electronic device includes an electronic circuit, a circuit board on which the electronic circuit is provided, and at least a circuit board housed therein, and a user having at least a user of the device.
- a housing provided with an operation unit for turning on / off the power, at least a part of the housing is made of magnesium or a magnesium alloy, or magnesium or a magnesium alloy. It is formed by die casting.
- FIG. 1 is a perspective view showing a disk recording and / or reproducing apparatus which is an electronic apparatus according to the present invention.
- FIG. 2 is an exploded perspective view showing a housing that constitutes the above device.
- Fig. 3 is a plan view showing the chassis and frame parts that make up the housing.
- FIG. 4 is a cross-sectional view showing a main part of the housing.
- FIG. 5 is a cross-sectional view showing a state in which a speaker unit is attached to a chassis constituting the housing.
- an optical disc or a magneto-optical disc which is a disc-shaped recording medium in which an information signal is recorded, is housed in a rectangular cartridge body. Use disk cartridges as recording media.
- the disc recording and / or reproducing apparatus to which the present invention is applied has a casing 100 as shown in FIGS. 1 and 2, and is mounted on the apparatus in the casing 100.
- the first printed circuit board 22 provided with an electronic circuit for processing information signals recorded and / or reproduced by the reproducing unit 39, the speaker unit 31, the microphone unit 4, etc. Is built in.
- a plurality of operation buttons for selecting an operation mode of the recording / reproducing unit 39, an operation button for turning on / off the power, an operation state, and the like are provided on an outer surface of the housing 100.
- a display unit 5 for displaying is provided.
- the recording / reproducing section 39 housed in the housing 100 is provided with a disk drive for rotating a magneto-optical disk or an optical disk housed in a disk cartridge mounted on the apparatus.
- Optical turn-up device and magnetic head constituting a disk rotation operation mechanism, recording / reproduction means for recording / reproducing an information signal with respect to a magneto-optical disk or an optical disk rotated / operated by the disk rotation operation mechanism Device.
- the disk rotating mechanism of the recording / reproducing section 39 is composed of a disk table and a spindle motor for rotating the disk table.
- a magneto-optical disk or optical disk stored in a disk cartridge mounted on this device is placed on a disk table and sucked by a magnet provided on the disk table. It is clamped.
- the magneto-optical disk or the optical disk is rotated integrally with the disk table by rotating the spindle motor.
- the optical pickup device is operated to move over the inner and outer peripheries of the magneto-optical disk or the optical disk rotated by the disk rotating mechanism.
- the optical pickup device uses a light beam emitted from a light source such as a semiconductor laser and converged by an objective lens to record a magneto-optical disc or a recording track of an optical disc on the inner and outer circumferences.
- the information signal recorded on the magneto-optical disc or the optical disc is read out by scanning over the area. That is, the optical backup device irradiates a light beam to the magneto-optical disc or the optical disc, and detects the return light from the magneto-optical disc or the optical disc by the photodetector.
- the optical pickup device and the magnetic head device irradiate a light beam emitted from the optical pickup device to the magneto-optical disk, and modulate the external magnetic disk according to the information signal to be recorded from the magnetic head. By applying a magnetic field, a desired signal is recorded.
- the recording / reproducing unit 39 uses an optical backup device and / or a magnetic head device to control a magneto-optical disk or an optical disk that is mounted on a disk rotation operation mechanism and operated to rotate. Recording of information signals and / Or play.
- the housing 100 that houses the recording / reproducing unit 39 configured as described above includes a chassis 1 that forms a first portion, and a second portion that is attached in parallel to one end of the chassis 1. It comprises a frame 21, a lid 3 rotatably attached to the frame 21, and a bottom 2 attached to the chassis 1 and the frame 21.
- the chassis 1 constituting the housing 100 is integrally formed of magnesium or a magnesium alloy. Specifically, the chassis 1 is formed by die-casting magnesium or a magnesium alloy. As the magnesium alloy used here, AZ91D or AZ91B of ANSI (American Standard Standards Instrument) is used.
- the chassis 1 forms a part of the housing 100 and, as shown in FIG. 2, has a substantially rectangular shape and bulges out so that the center portion is curved outward. It has a top plate la formed, and a front wall 1 b rises and forms at the front end side of the top plate la. c and 1 d are integrally formed.
- a connecting piece 1e for connecting the frame 21 is formed upright on the back side facing the front wall 1b.
- the sound reproduced from the slide unit 31 installed in the chassis 1 is provided in the housing 1.
- a sound emission hole 34 made up of a number of small holes for radiating outward from 0 is provided.
- a plurality of through holes 28 are formed in the position on one side wall 1 c side of the top plate la to allow various operation buttons to protrude outward from the housing 100.
- a through hole 26 for inserting an external connection cord drawn out of the microphone opening phone unit 4 attached to the chassis 1 is provided in front of the top plate la at a position along the side wall 1 b side.
- a mounting concave portion 29 for mounting the micro-phone unit 4 is formed.
- the mounting recess 29 is formed by opening a portion extending from the top plate 1a side of the chassis 1 to the front wall 1b ( in addition, a speaker unit is provided on the inner surface side of the top plate 1a).
- a plurality of cylindrical bosses 27 are screwed into which screws for fixing 3 1 etc. to the chassis 1 are projected, that is, a hollow portion formed at the center of each boss 27. These bosses 27 are formed integrally with the chassis 1 when the chassis 1 is die-cast.
- a tubing screw can be used as the screw 27 screwed to the boss 27.
- the magnesium or magnesium alloy constituting the chassis 1 has a low hardness and can easily form a screw thread by screwing a evening screw formed of steel. .
- the use of the tubing screw makes it extremely easy to attach each member such as the speaker unit 31.
- a female screw portion for screwing the screw may be processed by a process after the chassis 1 is die-cast.
- the frame 21 connected to the chassis 1 formed as described above is formed by bending a thin metal plate such as an aluminum alloy and connecting it to a substantially rectangular shape. I have.
- This frame 21 is provided with a plurality of screwing pieces 25 and a plurality of mounting pieces 24 to which a recording / reproducing section 39 is mounted so as to be bent inward on the lower edge side.
- an extension piece 21 a inserted into the chassis 1 is provided in a protruding manner.
- a screwing piece 25 is also provided on the lower edge of the extension piece 21a.
- the lower edge of the side 21 b where the extension piece 21 a of the frame 21 protrudes is provided with a pair of engaging portions 4 provided on the outer side of the connecting piece 1 e of the chassis 1. Engagement pieces 42, 42 that protrude relative to 1, 41 protrude.
- the frame 21 faces the inside of the chassis 1 so that the extension piece 21a extends along the inner side of the other side wall 1d, and the engaging pieces 4 2 and 4 2 It is connected to chassis 1 by engaging with 1, 4 1.
- the screwing pieces 25 provided on the extension pieces 21 a extending into the chassis 1 correspond to the bosses 27 on the chassis 1 side.
- the extension piece 21 a is formed by screwing a screw 38 through a through hole 25 a formed in the screwing piece 25 into a boss 27. Fixed to 1.
- a pair of screw holes 4 3, 4 3 and 4 4, 4 4 are formed between the connecting piece 1 e of the chassis 1 and the side 21 b facing the connecting piece 1 e. .
- By screwing fixing screws 45, 45 between these screw holes 43, 43 and 44, 44, the connecting piece 1e of the chassis 1 and the frame 2 are fixed. Fixed between 1.
- the frame 21 engages the engaging pieces 4 2 and 4 2 with the chassis 1, and screws the side 2 lb facing the extension piece 21 a and the connecting piece 1 e of the chassis 1 with the screw 3 8 , 45, it is attached to the chassis 1 integrally.
- the lid 3 constituting the housing 100 is rotatable so that one opening side of the frame 21 is closed and the base end is supported by the frame 21. Attached to. That is, the lid 3 is the frame 2 1 One opening side of the frame 21 is opened and closed by being rotated around a pivot portion on the base end side supported by the frame 21.
- a cartridge holder for holding a disk cartridge mounted on the recording / reproducing unit 39 is attached to the lid 3 so as to be able to rotate in synchronization.
- the lid 3 is rotated, the disc cartridge holder is loaded and unloaded to and from the recording / reproducing section 39 by rotating the lid 3.
- the bottom part 2 of the housing 100 is formed in a substantially rectangular shape with a raised peripheral wall 2a formed on the peripheral edge.
- the bottom 2 is fixed to the connecting body 101 with screws so as to close the opening side of the connecting body 101 of the chassis 1 and the frame 21.
- a battery loading / unloading port 33 a for loading / unloading a battery into / from a battery storage section 33 formed in the housing 100 is provided.
- the battery opening 33 a is opened and closed by an opening / closing lid 30 rotatably attached to the bottom 2.
- a battery such as a dry battery or a secondary battery is used as a power supply for driving the recording / reproducing apparatus of this embodiment. Therefore, batteries such as dry batteries or secondary batteries are selectively stored in the battery storage section 33.
- a speaker unit 31 and an electronic circuit for driving the speaker unit 31 are formed in a chassis 1 constituting the housing 100 as shown in FIG.
- the printed circuit board 32 and the battery housing 33 b constituting the battery housing 33 are arranged.
- the speaker unit 31 housed in the chassis 1 is connected to the electronic circuit of the first printed circuit board 22 via the wiring pattern and connection lines of the second printed circuit board 32. . Therefore, speaker unit 3
- Reference numeral 1 denotes an input of an acoustic signal reproduced by the recording / reproducing unit 39, which converts this acoustic signal into an audible sound and outputs it.
- the speaker unit 31 is disposed in the chassis 1 such that the sound emission surface side facing the diaphragm faces the sound emission hole 34 formed in the top plate 1a. Then, as shown in FIG. 5, the speaker unit 31 protrudes a 3 lb flange portion of the housing 31 a housing the sub force element into the inner surface of the top plate 1 a. It is engaged with the set positioning pieces 37, 37 and is attached to the chassis 1 by being supported by set screws 36, 36 screwed to the bosses 27, 27.
- the stop screws 36, 36 for supporting the speaker unit 31 are provided with a flange portion 35 on the base end side of the shaft portion, and the flange portion 35 forms a peripheral edge of the housing 31a.
- the second printed circuit board 32 is attached to the chassis 1 via a screw screwed to the boss 27.
- the battery housing 33 b constituting the battery housing 33 is disposed in the chassis 1 with the opening side facing the battery opening 33 a.
- This battery housing 33 b is also fixed to the chassis 1 by screws screwed to the bosses 27.
- the battery housing 33 b is configured so that three batteries are mounted, and has a plurality of connection terminals with which the electrodes of the batteries mounted here come into contact. These connection terminals are connected to an electronic circuit formed on the first printed circuit board 22, and power is supplied to a drive unit such as the recording / reproducing unit 39 via the electronic circuit.
- the disc recording and / or reproducing apparatus of the present embodiment is provided not only as a power source of the battery stored in the battery storage section 33 but also as shown in FIG. Jack for connecting external power supply 20 It can be driven by supplying an external power supply of a predetermined voltage via the.
- the microcrop unit 4 is disposed in the mounting recess 29 provided in the chassis 1 so as to be fitted therein.
- the microphone unit 4 is attached to the chassis 1 with a damper made of an elastic material such as rubber interposed between the microphone unit 4 and the concave portion 29 to be attached.
- the microphone unit 4 allows the external connection code to be inserted into the insertion hole 26, extend into the housing 100, and connect to the electronic circuit of the first printed circuit board 22. Is done.
- the chassis 1 has a recording button 8, a pause button 9, an end search button 10, and a hold button operated by sliding, which constitute an operation section for selecting an operation mode of the recording / reproducing section 39. 17 are provided. These buttons have their distal ends projecting outside the chassis 1 through the through holes 28. A switch for selecting the operation mode is provided corresponding to each button. These switching switches are electrically connected to an electronic circuit formed on the first printed circuit board 22.
- the display device 5 is provided on the upper surface side of the lid 3.
- the display device 5 is configured using a display element such as a liquid crystal display element (LCD).
- the display device 5 is electrically connected to an electronic circuit formed on the first printed circuit board 22, is driven according to a control signal supplied from this electronic circuit, and performs display according to the control signal. I do.
- LCD liquid crystal display element
- a play button 6, a stop button 7, and a recording touch button for selecting an operation mode of the recording / reproducing section 39 are provided on one side surface of the bottom portion 2 constituting the housing 100.
- 13 and 14 are provided, and a lid opening button 19 for opening the lid 3 is provided.
- These buttons are also on one side of the bottom 2 The front end side is made to protrude outward from the housing 100 through a through hole formed in the housing 100.
- a switch that is switched by each button for selecting an operation mode is electrically connected to an electronic circuit on the first printed circuit board 22.
- the electronic circuit formed on the first printed circuit board 22 is controlled by operating the operation buttons described above.
- a control signal corresponding to the operation is output, and the operation mode of the recording / reproducing section 39 is selected to record and / or reproduce information signals on the magneto-optical disc or the optical disc.
- the recording button 8 when the recording button 8 is operated to select the recording mode, the recording of the audio signal collected by the microphone unit 4 or the external signal input through the external device connection terminal is performed.
- the recording of information signals from the device is performed.
- the audio signal and the information signal are recorded on a recording / reproducing magneto-optical disc using an optical backup device and a magnetic head.
- an optical signal is read out by the optical pickup device, which is an information signal recorded magneto-optically or on an optical disk.
- the read acoustic signal is reproduced as an audible sound via the speaker unit 31.
- the chassis 1 constituting the housing 100 is formed by die-casting magnesium or magnesium alloy, and the screws for attaching members are screwed. Since the bosses to be combined are formed integrally, the speaker unit 31 and the battery storage section can be used without using mounting members separate from the chassis 1.
- the battery housing 33 b constituting 33 can be directly attached to the chassis 1. Therefore, the configuration of the housing 100 is simplified, and assembly is facilitated.
- the specific gravity of the magnet constituting the chassis 1 constituting a part of the housing 100 is 1.8, the weight of the housing 100 can be reduced, and the weight of the device itself can be reduced.
- the present invention since the die casting of magnesium or a magnesium alloy can be performed with extremely high precision, the chassis 1 can be formed with high precision.
- the molded body of magnesium or magnesium alloy has high mechanical strength, a strong casing 100 can be formed, and reliable disk recording and recording can be performed.
- molded body of magnesium or magnesium alloy has a metallic appearance, the appearance of the disk recording and / or reproducing apparatus can be improved.
- the speaker unit 31 is directly attached to the chassis 1, when the subunit 31 is driven, unnecessary vibration does not occur through an intermediary. At the same time, it is possible to obtain reproduced sound of good sound quality. Further, since the chassis 1 can be made into a single structure, the chassis 1 can be easily made a sealed structure, and the sound radiated to the back side of the speaker unit 31 can be reduced. Since a space sufficient to attenuate can be easily formed, it is possible to improve the reproduction characteristics.
- This vibration absorption (damping capacity) indicates the energy loss (%) lost in one cycle of vibration when a test material is vibrated by applying a predetermined pressure (MPa).
- the initial vibration energy is A.
- the vibration energy after one cycle can be obtained from the following equation (1).
- the speaker unit 31 attached to the chassis 1 is generated when the speaker unit 31 is driven.
- the transmitted vibration can be reliably attenuated by the chassis 1.
- unnecessary vibration is prevented from being added to the reproduced sound, and the sound quality of the reproduced sound radiated from the speaker unit 31 is prevented from deteriorating, and the reproduction characteristics are improved. it can.
- the objective lens that focuses the light beam emitted from the optical pickup device and irradiates the magneto-optical disk or optical disk with the focusing direction in the optical axis direction and at right angles to the optical axis
- the driving control of the objective lens driving device that controls the driving in the tracking direction, which is the direction of the plane, is performed stably without being affected by disturbance. That is, since the magneto-optical disc or the optical disc is rotated stably and the objective lens driving device is accurately controlled, the recording and / or reproducing of the information signal with good recording and / or reproducing characteristics is performed. Or reproduction becomes possible.
- the vibration generated from the recording / reproducing unit attached to the frame 21 side is attenuated by the chassis 1, so that the chassis 1 Unnecessary transmission of vibration to the microphone unit 4 mounted on the side is prevented. Therefore, the sound collection characteristics of the microphone unit 4 are improved, and it becomes possible to record external sound having good sound quality.
- the speaker unit 31 is mounted on the chassis 1 formed of magnesium or magnesium alloy having excellent vibration absorption, the speaker unit 31 is moved to the side where the recording / reproducing unit 39 is provided.
- the transmission of vibration can be cut off. Therefore, the vibration applied to the first printed circuit board 22 provided with the electronic circuit for controlling the recording / reproducing section 39 mounted on the side where the recording / reproducing section 39 is provided is suppressed, and Not only can the printed circuit board 22 be protected, but also a stable operation of the electronic circuit can be realized.
- the second printed circuit board 32 attached to the chassis 1 made of conductive magnesium or magnesium alloy is directly attached to the chassis 1 and grounded via the chassis 1. This simplifies the grounding configuration and facilitates assembly.
- the chassis 1 to which the speaker unit 31 is attached is formed of magnesium or a magnesium alloy.
- the bottom 2 and the lid constituting the housing 100 are not limited.
- the entirety of the part 3 and the housing 100 may be made of magnesium or a magnesium alloy.
- the present invention is not limited to a device having a recording / reproducing unit, but also an electro-acoustic transducer such as a speaker unit, an electronic circuit, and a print circuit including the electronic circuit.
- the advantages described above can also be realized when applied to equipment having a substrate.
- the electronic device has a recording / reproducing unit, an electroacoustic transducer such as a speaker unit, or at least a part of a housing for accommodating an electronic circuit that absorbs vibration. Since it is made of magnesium or a magnesium alloy, which has excellent resistance, the vibration generated from each part or each member is attenuated, and the influence of the vibration between each part or each member is eliminated.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/722,143 US5905706A (en) | 1995-02-24 | 1996-02-23 | Electronic equipment such as recording and/or reproducing for recording medium |
DE69614060T DE69614060T2 (de) | 1995-02-24 | 1996-02-23 | Elektronisches gerät wie aufzeichnungs- und/oder wiedergabegerät für aufzeichnungsmedium |
EP96903233A EP0767463B1 (en) | 1995-02-24 | 1996-02-23 | Electronic device such as recording and/or reproducing device for recording medium |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7/37011 | 1995-02-24 | ||
JP7037011A JPH08236951A (ja) | 1995-02-24 | 1995-02-24 | 電子機器 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996026517A1 true WO1996026517A1 (fr) | 1996-08-29 |
Family
ID=12485744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/000429 WO1996026517A1 (fr) | 1995-02-24 | 1996-02-23 | Dispositif electronique tel qu'un dispositif d'enregistrement et/ou de reproduction pour un support d'enregistrement |
Country Status (7)
Country | Link |
---|---|
US (1) | US5905706A (ja) |
EP (1) | EP0767463B1 (ja) |
JP (1) | JPH08236951A (ja) |
KR (1) | KR100389995B1 (ja) |
CN (1) | CN100385567C (ja) |
DE (1) | DE69614060T2 (ja) |
WO (1) | WO1996026517A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6490235B1 (en) * | 1997-08-07 | 2002-12-03 | Sony Corporation | Storage and reproduction apparatus with rotary control element for controlling operations |
JP3669465B2 (ja) * | 1997-10-14 | 2005-07-06 | 東洋化工株式会社 | パチンコ遊技機における遊技盤枠の下枠 |
EP0945199B1 (en) * | 1998-03-26 | 2003-11-26 | Tokyo Seitan Inc. | Thin, forged magnesium alloy casing and method for producing the same |
JP2000005858A (ja) * | 1998-06-19 | 2000-01-11 | Toshiba Corp | 電子機器及びその製造方法 |
JP2000005860A (ja) * | 1998-06-22 | 2000-01-11 | Toshiba Corp | 金型装置及び電子機器用筐体の製造方法 |
JP2002051130A (ja) * | 2000-08-04 | 2002-02-15 | Matsushita Electric Ind Co Ltd | 携帯端末装置 |
CN100473076C (zh) | 2000-08-04 | 2009-03-25 | 松下电器产业株式会社 | 折叠式便携蜂窝电话 |
US20040150947A1 (en) * | 2003-01-31 | 2004-08-05 | Tang Kenneth K. | Technique for controlling rotational vibration related to a drive module |
JP2008164799A (ja) * | 2006-12-27 | 2008-07-17 | Sony Corp | 電子機器の筐体及びその筐体を備えた電子機器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53131805A (en) * | 1977-04-22 | 1978-11-17 | Pioneer Electronic Corp | Turntable for record player |
JPS6133757Y2 (ja) * | 1980-12-05 | 1986-10-02 | ||
JPH0284198U (ja) * | 1988-12-15 | 1990-06-29 |
Family Cites Families (21)
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US3653880A (en) * | 1970-01-08 | 1972-04-04 | Norsk Hydro As | Magnesium cast alloys with little tendency to hot-crack |
JPS4873111A (ja) * | 1971-12-29 | 1973-10-02 | ||
US4078807A (en) * | 1974-11-04 | 1978-03-14 | Sherwood Henry A | Phonograph record player |
US4313025A (en) * | 1980-06-04 | 1982-01-26 | Motorola, Inc. | Unitary die-cast assembly for electronic circuits |
JPS57124999A (en) * | 1981-01-26 | 1982-08-04 | Sumitomo Electric Ind Ltd | Frame for speaker |
US4571456B1 (en) * | 1982-10-18 | 1995-08-15 | Grid Systems Corp | Portable computer |
US4605975A (en) * | 1983-06-27 | 1986-08-12 | Beaman Franklin D | Portable news-gathering cassette recorder having microphone talk-over capability |
JPS6137943A (ja) * | 1984-07-31 | 1986-02-22 | Katsuhiro Nishiyama | マグネシウム系制振合金 |
JPS6296628A (ja) * | 1985-10-23 | 1987-05-06 | Kobe Steel Ltd | 防振性にすぐれた高強度Mg合金系複合材 |
JPS62109275A (ja) * | 1985-11-08 | 1987-05-20 | Sumitomo Light Metal Ind Ltd | 外部記憶装置用ケ−ス |
CH667674A5 (en) * | 1986-12-04 | 1988-10-31 | Inst Genie Atomique Epfl Ecubl | High damping capacity magnesium-silicon alloy - is esp. eutectic alloy, is used for light-constructional parts |
JPS63220699A (ja) * | 1987-03-09 | 1988-09-13 | Onkyo Corp | スピ−カ用フレ−ム |
US4811314A (en) * | 1987-04-13 | 1989-03-07 | Scosche Industries, Inc. | Portable compact disc player and vehicle audio apparatus with slidable tray for supporting compact disc player |
AT392702B (de) * | 1989-08-29 | 1991-05-27 | Philips Nv | Aufzeichnungs- und/oder wiedergabegeraet |
JPH0397839A (ja) * | 1989-09-11 | 1991-04-23 | Fujitsu Ltd | 複合軽量防振材とその製法 |
EP0532609A4 (en) * | 1990-06-01 | 1993-09-08 | Conner Peripherals, Inc. | Two and one half inch diameter multiple disk drive |
US5168527A (en) * | 1990-06-14 | 1992-12-01 | Lzr Electronics, Inc. | Miniature speaker variable standoff mount |
JPH04105284A (ja) * | 1990-08-24 | 1992-04-07 | Sony Corp | 光ディスク記録及び/又は再生装置 |
WO1992013347A1 (de) * | 1991-01-21 | 1992-08-06 | Ivan Vuk | Tonaufnahme- und wiedergabegerät |
US5143564A (en) * | 1991-03-28 | 1992-09-01 | Mcgill University | Low porosity, fine grain sized strontium-treated magnesium alloy castings |
US5237486A (en) * | 1992-06-05 | 1993-08-17 | Apple Computer, Inc. | Structural frame for portable computer |
-
1995
- 1995-02-24 JP JP7037011A patent/JPH08236951A/ja active Pending
-
1996
- 1996-02-23 WO PCT/JP1996/000429 patent/WO1996026517A1/ja active IP Right Grant
- 1996-02-23 DE DE69614060T patent/DE69614060T2/de not_active Expired - Fee Related
- 1996-02-23 US US08/722,143 patent/US5905706A/en not_active Expired - Fee Related
- 1996-02-23 CN CNB961902884A patent/CN100385567C/zh not_active Expired - Fee Related
- 1996-02-23 KR KR1019960705929A patent/KR100389995B1/ko not_active IP Right Cessation
- 1996-02-23 EP EP96903233A patent/EP0767463B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53131805A (en) * | 1977-04-22 | 1978-11-17 | Pioneer Electronic Corp | Turntable for record player |
JPS6133757Y2 (ja) * | 1980-12-05 | 1986-10-02 | ||
JPH0284198U (ja) * | 1988-12-15 | 1990-06-29 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0767463A4 * |
Also Published As
Publication number | Publication date |
---|---|
US5905706A (en) | 1999-05-18 |
CN100385567C (zh) | 2008-04-30 |
DE69614060D1 (de) | 2001-08-30 |
DE69614060T2 (de) | 2002-03-14 |
EP0767463A1 (en) | 1997-04-09 |
EP0767463A4 (en) | 1997-02-03 |
CN1149925A (zh) | 1997-05-14 |
JPH08236951A (ja) | 1996-09-13 |
KR970702558A (ko) | 1997-05-13 |
EP0767463B1 (en) | 2001-07-25 |
KR100389995B1 (ko) | 2003-08-19 |
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