JP2010086650A - Clamper mounting member for disk clamping device and disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a disk housed in a disk device body from not being removed well from the disk device body and damaging to the disk jammed in the disk device body. <P>SOLUTION: A clamper mounting member 30 for a disk clamping device 430 is used for fixing the disk M in a turnable manner when the disk M is disposed in the disk device body M11, and the clamper mounting member 30 includes a disk fall jamming preventing part 40 for preventing, when the disk device body 11 incorporating the disk M is set roughly reverse, falling of the disk M from a disk conveying member 20 in the disk device body 11 and jamming of the disk in the disk device body 12. The disk device 10 includes the disk fall jamming prevention part 40. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a clamper mounting member for a disk clamp device and a disk device.

  A disk device is used to read data from the disk. A disk device is used to record data on the disk. Examples of the disc include a CD (compact disc) and a DVD (digital versatile disc). “CD” is an abbreviation for “Compact Disc” (trademark). “DVD” (registered trademark) is an abbreviation for “Digital Versatile Disc”.

  Examples of the disk device include a disk recording medium insertion / removal method and a disk drive device that can be thinned (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2005-38483 (pages 1, 6 and FIGS. 1 to 9)

  However, in the above conventional disk device, after the disk is inserted into the disk device, for example, when the power of the disk device is forcibly turned off, the disk in the disk device is manually inserted into the disk device. When trying to remove the disk device, the disk device may be handled upside down.

  At that time, the disk provided on the tray in the disk device may fall on a clamper mounting sheet metal so-called stopper of the clamp mechanism in the disk device and be caught by a complicated mechanism portion.

  Therefore, when the tray is pulled out from the disk device main body by manual operation and the disk in the disk device is taken out from the disk device, the disk in the disk device cannot be taken out from the disk device. There was concern about the occurrence of problems such as scratches on the disk hooked to a complicated mechanism in the disk device due to forcibly pulling out the disk from the inside.

  In order to solve the above-described problems, a clamper mounting member for a disk clamp device according to claim 1 of the present invention is used when the disk is rotatably fixed when the disk is provided in the disk device body. A clamper mounting member for a disk clamp device, wherein the disk is dropped from above a disk transport member in the disk device body when the disk device body in which the disk is housed is turned upside down. It is characterized by having a disk drop catch prevention part that prevents it from being caught inside.

With the above configuration, when the disk device body in which the disk is housed is turned upside down, the disk is dropped from the disk conveying member in the disk device body, and at that time, the disk is hooked inside the disk device body. The occurrence of problems such as the disk in the disk device main body being unable to be successfully removed from the disk device main body or being scratched on the disk hooked inside the disk device main body is caused by the clamper mounting member for the disk clamp device. This is avoided by the provided disc drop catch prevention unit.

  A clamper mounting member for a disk clamp device according to a second aspect is the clamper mounting member for a disk clamp device according to the first aspect, wherein the disk transport member is pulled out from the disk device main body in a front direction. When the insertion direction of the disk transport member is set to the rear side with respect to the apparatus main body, the disk drop catch prevention portion extends substantially along the rear side direction of the clamper mounting member main body. And

  With the above-described configuration, the occurrence of the above-described problem is avoided by the disk drop catch prevention portion that extends substantially along the rear side of the disk clamp device clamper mounting member body. With the disk device main body in which the disk is built up being turned upside down, a manual operation is performed and the disk transport member is pulled out from the disk device main body, so that the disk in the disk device main body can be taken out from the disk device body. In this case, since the disk fall / near prevention part extends substantially along the rear side direction of the clamper mounting member body for the disk clamp device, the disk dropped on the disk fall / near prevention part body Being caught inside the disk device main body is avoided.

  A clamper mounting member for a disk clamp device according to a third aspect is the clamper mounting member for the disk clamp device according to the first or second aspect, wherein the disk drop catch preventing portion extends substantially parallel to the clamper mounting member main body. It is characterized by having an installed disc drop catch prevention body.

  With the above-described configuration, the occurrence of the above-described problem is avoided by the disk drop catch prevention unit provided in the disk clamp device clamper mounting member. When the disk device main body in which the disk is housed is turned upside down, even if the disk falls from the disk conveying member in the disk device main body, the disk is extended substantially parallel to the clamper mounting member main body. Provided on the main body of the disk drop catch prevention unit. Therefore, it is possible to avoid that the disk dropped on the disk drop catch prevention unit main body is caught inside the disk device main body.

  A clamper mounting member for a disk clamp device according to a fourth aspect of the present invention is the clamper mounting member for a disk clamp device according to any one of the first to third aspects, wherein the disk drop catch prevention portion is provided on a clamper mounting member main body. A disc drop catch prevention unit main body extending substantially parallel to the disc, and a disc stop unit extended toward the disc transport member along a direction substantially orthogonal to the disc fall catch prevention unit main body, It is characterized by having.

  With the above-described configuration, the occurrence of the above-described problem can be reliably avoided by the disk drop catch prevention unit provided in the disk clamp device clamper mounting member. When the disk device main body in which the disk is housed is turned upside down, even if the disk falls from the disk conveying member in the disk device main body, the disk is extended substantially parallel to the clamper mounting member main body. It is securely provided on the main body of the disk fall prevention unit. In addition, the disk dropped on the disk drop catch prevention unit main body by the disk stop extending toward the disk transport member along a direction substantially orthogonal to the disk drop catch prevention unit main body Being caught inside is definitely avoided.

  A clamper mounting member for a disk clamp device according to a fifth aspect of the present invention is the clamper mounting member for a disk clamp device according to any one of the first to fourth aspects, wherein the disk drop catch prevention portion is provided in the disk device. It is also characterized by serving as a foreign matter accumulation prevention unit for preventing foreign matter from accumulating on the pickup device.

  With the above configuration, the occurrence of the above-described problem is avoided, and the occurrence of a problem that foreign matter accumulates on the pickup device in the disk device is avoided.

  In the disk device according to the sixth aspect, when the disk device main body in which the disk is housed is turned upside down, the disk is dropped from the disk conveying member in the disk device main body and hooked inside the disk device main body. It is characterized by having a disk drop and catch prevention part for preventing this.

  With the above configuration, when the disk device body in which the disk is housed is turned upside down, the disk is dropped from the disk conveying member in the disk device body, and at that time, the disk is hooked inside the disk device body. Occurrence of problems such as the disk in the disk device main body being unable to be successfully removed from the disk device main body or being scratched on the disk caught inside the disk device main body was provided in the disk device main body. It is avoided by the disk drop catch prevention unit.

  A disk device according to claim 7 is a disk device according to claim 6, which is used when the disk is rotatably fixed when the disk is provided in the disk device body. The disk clamp attachment member is provided with the disk drop catch prevention part.

  With the above-described configuration, the occurrence of the above-described problem is avoided by the disk drop catch prevention unit provided in the disk clamp device clamper mounting member.

  The disk device according to claim 8 is the disk device according to claim 7, wherein the drawing direction of the disk transport member is a front side direction with respect to the disk device body, and the disk transport member is inserted into the disk device body. When the direction is the rear side direction, the disk drop catch prevention portion extends substantially along the rear side direction of the clamper mounting member.

  Due to the above-described configuration, the occurrence of the above-described problem is avoided by the disk dropping and catching prevention portion that extends substantially along the rear side direction of the clamper mounting member in the disk device main body. With the disk device main body in which the disk is built up being turned upside down, a manual operation is performed and the disk transport member is pulled out from the disk device main body, so that the disk in the disk device main body can be taken out from the disk device body. In this case, since the disk fall / near prevention part extends substantially along the rear side direction of the clamper mounting member in the disk device body, the disk dropped on the disk fall / near prevention part body Being caught inside the disk device main body is avoided.

  The disk apparatus according to claim 9 is the disk apparatus according to claim 7 or 8, wherein the disk drop catch prevention portion is extended substantially parallel to a clamper mounting member main body constituting the clamper mounting member. It has a disk fall catch prevention part main body.

  With the above configuration, the occurrence of the above-described problem is avoided by the disk drop catch prevention unit provided in the clamper mounting member in the disk device main body. When the disk device main body in which the disk is housed is turned upside down, even if the disk falls from the disk conveying member in the disk device main body, the disk is extended substantially parallel to the clamper mounting member main body. Provided on the main body of the disk drop catch prevention unit. Therefore, it is possible to avoid that the disk dropped on the disk drop catch prevention unit main body is caught inside the disk device main body.

  The disk device according to a tenth aspect is the disk device according to any one of the seventh to ninth aspects, wherein the disk drop catch prevention portion is substantially parallel to a clamper mounting member main body constituting the clamper mounting member. And a disc stop portion extending toward the disc transport member along a direction substantially orthogonal to the disc drop catch portion main body. It is characterized by.

  With the above configuration, the occurrence of the above-described problem can be reliably avoided by the disk drop catch prevention unit provided in the clamper mounting member in the disk device main body. When the disk device main body in which the disk is housed is turned upside down, even if the disk falls from the disk conveying member in the disk device main body, the disk is extended substantially parallel to the clamper mounting member main body. It is securely provided on the main body of the disk fall prevention unit. In addition, the disk dropped on the disk drop catch prevention unit main body by the disk stop extending toward the disk transport member along a direction substantially orthogonal to the disk drop catch prevention unit main body Being caught inside is definitely avoided.

  The disk device according to claim 11 is the disk device according to any one of claims 6 to 10, wherein the disk drop catch preventing unit prevents foreign matter from accumulating on the pickup device in the disk device. It also serves as a foreign matter accumulation prevention unit.

  With the above configuration, the occurrence of the above-described problem is avoided, and the occurrence of a problem that foreign matter accumulates on the pickup device in the disk device is avoided.

  According to the present invention, when the disk device main body in which the disk is housed is turned upside down, the disk is dropped from the disk conveying member in the disk device main body, and at that time, the disk is hooked inside the disk device main body. If a disk in the disk unit cannot be successfully removed from the disk unit, or the disk caught inside the disk unit is damaged, the clamper for the disk clamp unit must be installed. This can be avoided by the disk drop catch prevention unit provided in the member.

  Further, according to the present invention, when the disk device main body in which the disk is housed is turned upside down, the disk is dropped from the disk conveying member in the disk device main body, and at that time, the disk is inserted into the disk device main body. When a disk is caught in the disk device main body, the disk device main body cannot be taken out of the disk device main body or the disk caught inside the disk device main body is damaged. This can be avoided by the disk drop catch prevention unit provided in the above.

(A) is a top view which shows the clamper attachment member for disc clamp apparatuses and disc apparatus which concern on this invention, (B) is the description which shows the state which looked at the clamper attachment member for disc clamp apparatuses and disc apparatus concerning this invention from the side FIG. It is explanatory drawing which shows one Embodiment of the disk apparatus based on this invention. It is a perspective view which shows one Embodiment of the pick-up apparatus with which a disc apparatus is equipped.

  Hereinafter, an embodiment of a clamper mounting member for a disk clamp device and a disk device according to the present invention will be described in detail with reference to the drawings.

  The magnetic member 50 and the magnetic coupling member 60 illustrated in FIG. 3 constitute a fixing unit 320 of the driving device 310. The plurality of objective lenses 110 and 120, the holding member 90, the plurality of coils 70 corresponding to the plurality of magnetic members 50, the plurality of objective lenses 110 and 120, the plurality of coils 70, and the like are attached to the holding member 90. The movable part assembly 100 and the plurality of support members 80 that support the movable part assembly 100 constitute a movable part 330 of the drive device 310. A driving device 310 for the objective lenses 110 and 120 of the pickup device 300 is configured as an actuator 310 including the fixed portion 320 and the movable portion 330, for example.

  As the pickup device 300 shown in FIGS. 2 and 3, for example, an optical pickup device 300 that can emit laser light (LASER: light amplification by stimulated emission of radiation) is used. For example, an optical pick-up or an optical pick-up unit is abbreviated as “OPU”. As the disk device 10 shown in FIG. 2, for example, an optical disk device 10 capable of emitting laser light is used. Further, the objective lens is abbreviated as “OBL”, for example. A movable member assembly 100 configured by attaching two OBLs 110 and 120, six coils 70, and the like to a holding member 90 (FIG. 3), a so-called lens holder 90, is a lens / holder assembly 100, for example.

  The OPU 300 shown in FIGS. 2 and 3 corresponds to various media M such as various disks M (FIG. 2). Examples of the disk M include an optical disk M. The OPU 300 reproduces data, information, signals, and the like recorded on various media M such as various optical disks M. In addition, the OPU 300 records data, information, signals, images, and the like on various media M such as various writable or rewritable optical discs M. Further, in response to various media M such as various optical discs M that can erase data, information, signals, etc., the OPU 300 erases data, information, signals, etc. recorded on various media M such as various optical discs M. . Media means, for example, a disk on which data, information, signals, and the like are stored.

  The OPU 300 includes, for example, “CD” (Compact Disc) (trademark) series media, “DVD” (registered trademark) (Digital Versatile Disc) series media, and “HD DVD” (High Definition DVD) (trademark) series. Media, “CBHD (China Blue High-Definition)” (for example, former name “CH-DVD”) series media, “Blu-ray Disc” (registered trademark) series, which are media based on standards established in China Compatible with any media. The OPU 300 corresponds to, for example, at least one type of media selected from the group consisting of the various media. Specifically, the OPU 300 corresponds to any of the plurality of media.

Examples of the medium M include the above-described various optical discs M, and a medium M having the following form is also included. Examples of the disk (M) include an optical disk (M) provided with signal surface portions (Ma) on both sides of the disk and capable of data writing / erasing and data rewriting. Further, as the disk (M), for example, an optical disk (M) provided with a two-layer signal surface portion (Ma) and capable of data writing / erasing, data rewriting and the like can be cited. In addition, the parentheses () attached to the reference numerals in this specification are used for convenience in order to explain the slightly different things from those shown in the drawings. Further, for example, there is also an “HD DVD” optical disc (not shown) provided with a three-layer signal surface portion and capable of data writing / erasing and data rewriting. Further, for example, a “Blu-ray Disc” optical disc provided with a four-layer signal surface portion and capable of data writing / erasing, data rewriting, and the like (not shown) is also included. In addition, for example, an optical disk (M) that can perform various writing on the label or the like by irradiating a laser beam on the side of the label surface of the optical disk (M). The signal surface portion Ma and the label surface portion of the optical disc M are configured to include a thin layer such as a metal thin film, for example. Data, information, a signal, etc. are recorded on the signal surface part Ma comprised with a metal thin film etc., and an image etc. are recorded on a label surface part. The signal surface portion Ma of the optical disc M is configured as a signal layer Ma including a thin metal layer, for example.

  Information is recorded on the optical disk M (FIG. 2) by a laser beam emitted from an optical member (not shown) constituting the light emitting element when current is supplied to an optical member (not shown) constituting the light emitting element. The information recorded on the optical disc M is reproduced, or the information recorded on the optical disc M is erased. Examples of the light emitting element include a semiconductor laser.

  The laser beam is focused on the signal layer Ma of the optical disc M by moving the OBLs 110 and 120 of the OPU 300 up and down / left and right using the actuator 310 of the OPU 300. More specifically, when the signal layer Ma of the optical disc M is irradiated and formed with a high-precision laser spot, the OBL 110 and 120 mounted on the lens holder 90 are moved by the actuator 310 of the OPU 300 to the focusing direction D1, the tracking direction D2, and It is moved substantially along the tilt direction or the like as necessary. The OPU 300 performs focusing adjustment, tracking adjustment, and tilt adjustment as necessary when the laser beam is focused by the OBLs 110 and 120. In addition, the focusing adjustment, the tracking adjustment, and the tilt adjustment are performed substantially simultaneously, for example.

  Focus means, for example, focus or focus. Focusing means focusing or focusing. The track means a signal trajectory on the optical disc, for example. Further, tracking means that light is used to trace and observe a minute signal portion provided on the signal surface of the optical disc, and the position of the orbit drawn in a substantially spiral shape is determined. The tilt in the optical disk device or the optical pickup device means an angular deviation between the disk surface and the optical axis of the objective lens.

  For example, when focus servo of the lens holder assembly 100 including the lens holder 90 with the OBLs 110 and 120 mounted thereon is performed on the optical disc M, a lens holder assembly including the lens holder 90 with the OBLs 110 and 120 mounted thereon. The solid 100 is moved along the vertical direction D1. Further, when tracking servo of the lens holder assembly 100 including the lens holder 90 with the OBLs 110 and 120 mounted thereon is performed on the optical disk M, a lens holder assembly including the lens holder 90 with the OBLs 110 and 120 mounted thereon. The solid 100 is moved along the left-right direction D2. The servo or servo mechanism means a mechanism that measures the state of the object to be controlled, compares the measured value with a reference value, and automatically performs correction control. When the laser beam focused by the OBLs 110 and 120 is focused on the signal layer Ma of the optical disc M, the lens holder assembly 100 including the lens holder 90 equipped with the OBLs 110 and 120 is moved up and down, left and right, etc. Driven.

  In the OPU 300 shown in FIGS. 2 and 3, the focus direction D1 that is substantially along the optical axis direction D1 of the OBLs 110 and 120 and the tracking that is substantially along the one radial direction D2 of the optical disk M. A pair of OBLs 110 and 120 are juxtaposed on the lens holder 90 substantially along a tangential direction D3 that is orthogonal to the direction D2, but the design of the optical disk device (10), OPU (300), etc. / Depending on the specification and the like, for example, a pair of OBLs (110, 120) on the lens holder (90) substantially along the tracking direction (D2), which is substantially along the one radial direction (D2) of the optical disc (M). May be juxtaposed. Further, one OBL may be mounted on the lens holder (90) without using a plurality of OBLs (110, 120).

  The OPU 300 shown in FIG. 3 includes an optical member so-called laser diode (LD: laser diode) (not shown) that irradiates the optical disc M (FIG. 2) with laser light. Further, the OPU 300 includes a drive circuit unit so-called a laser driver (LDD: LD driver) (not shown) for causing electricity to flow through the LD to light the LD. The OPU 300 also includes a flexible substrate (not shown) such as a flexible printed circuit (not shown) that connects an electrical component such as an LD and an electrical component such as an LDD so as to be energized. A flexible printed circuit body (Flexible Printed Circuit) is abbreviated as “FPC”. An FPC has a plurality of circuit conductors printed on an insulating sheet made of a heat-resistant synthetic resin such as polyimide (PI: polyimide) resin, which is excellent in heat resistance when soldering or the like is performed. A foil is juxtaposed with the insulating sheet, and a transparent or translucent protective layer is provided thereon (none of which is shown).

  For example, electricity is flowed from the LDD (not shown) to the LD through the FPC, and laser light is output from the LD. For example, a laser beam of 0.2 to 500 mW (milliwatt) for “CD” capable of emitting an infrared laser beam having a wavelength of about 765 to 840 nm (nanometer) and a reference wavelength of about 780 nm is emitted from the LD. Is done. Further, for example, 0.2 to 500 mW laser light for “DVD” capable of emitting red laser light having a wavelength of about 630 to 685 nm and a reference wavelength of about 635 nm or 650 nm is emitted from the LD. The LD includes, for example, a first wavelength laser beam having a reference wavelength of approximately 780 nm and a wavelength of approximately 765 to 840 nm, and a second wavelength having a reference wavelength of approximately 635 nm or 650 nm and a wavelength of approximately 630 to 685 nm. And a two-wavelength LD capable of emitting a wavelength laser beam.

  Depending on the design / specifications of the optical disc device 10, OPU 300, etc., for example, the wavelength is about 340 to 450 nm, preferably about 380 to 450 nm, more preferably more than about 400 nm to 450 nm or less, and the reference wavelength is about 405 nm. Laser light of 0.2 to 500 mW for “CBHD”, “HD DVD” and “Blu-ray Disc” capable of emitting laser light is emitted from the LD (10). In this case, the LD (10) has, for example, a first wavelength laser beam having a reference wavelength of about 780 nm and an emission wavelength of about 765 to 840 nm, a reference wavelength of about 635 nm or 650 nm, and A laser beam having a plurality of wavelengths, a second wavelength laser beam having an emission wavelength of about 630 to 685 nm, and a third wavelength laser beam having a reference wavelength of about 405 nm and an emission wavelength of about 340 to 450 nm. It is configured as a special LD (10) that can emit light. Further, as the LD, various LDs such as a single wavelength LD (10) capable of emitting the laser light of each wavelength can be used. Further, as the LD, an LD capable of emitting laser light having at least one of the above wavelengths can be used.

  For example, laser light having an output value of 0.2 to 500 mW, specifically 0.5 to 400 mW, is emitted from the LD. For example, when the laser light has an output value of less than 0.2 mW, the amount of laser light that is reflected after reaching the optical disc M and reaches a light receiving element (not shown) is insufficient. When reproducing each data on the optical disc M, a laser beam having an output value of several to several tens of mW, for example, 0.2 mW or more, preferably 0.5 mW or more and 20 mW or less is sufficient. When writing each data or the like on the optical disc M, a laser beam having an output value of several tens to several hundreds mW is required. For example, when writing various data on the optical disc M at a high speed, a pulse laser beam having a high output value of 400 mW or 500 mW may be required.

  The OPU 300 includes a pair of OBLs 110 and 120 that irradiate and form a focused spot on the signal layer Ma of the optical disc M by narrowing the laser beam. The OBL 110 is formed as a convex lens 110 provided with a substantially convex curved surface portion 111. The OBL 120 is formed as a convex lens 120 provided with a substantially convex curved surface portion 121.

For example, a thermoplastic heat-resistant synthetic resin material that can be injection-molded and is transparent or translucent is used, and the OBLs 110 and 120 are formed based on an injection molding method. More specifically, the OBLs 110 and 120 are formed based on an injection molding method using, for example, a composition based on an acrylic / methacrylic resin having excellent weather resistance, specular smoothness, accuracy, etc., and high transparency. The The official name of the methacrylic resin is polymethyl methacrylate, and polymethyl methacrylate is abbreviated as, for example, PMMA. The methacrylic resin is sometimes called an acrylic resin. In addition, the OBLs 110 and 120 are formed using, for example, a composition based on a polycarbonate (PC) -based resin that is excellent in workability and can be reduced in price.

  For example, by using the synthetic resin material to form the OBLs 110 and 120, the OBLs 110 and 120 can be reduced in weight. The synthetic resin OBLs 110 and 120 having a substantially convex lens shape are efficiently mass-produced based on an injection molding method. By enabling mass production of the OBLs 110 and 120, the price of the OBLs 110 and 120 can be reduced. Depending on the design / specifications of the optical disc device 10 and the OPU 300, for example, translucent or transparent glass material is used instead of translucent or transparent synthetic resin material, and OBL (110) and / or (120 ) Is formed.

  The OPU 300 includes a lens holder 90 that constitutes the lens-holder assembly 100. The lens holder 90 is formed based on an injection molding method having excellent mass productivity, using a thermoplastic aromatic ring-containing heat-resistant synthetic resin material having excellent moldability. Specifically, for example, the lens holder 90 is excellent in thinness / precision moldability, excellent in heat resistance when soldering or the like is performed, excellent in injection moldability, and more lightweight than iron materials. It is formed using a composition based on a liquid crystal polymer (LCP) that is made possible. Examples of the liquid crystal polymer include wholly aromatic liquid crystal resins having excellent heat resistance. If the lens holder 90 is formed based on the injection molding method, the lens holder 90 can be efficiently mass-produced even if the lens holder 90 has a complicated shape.

  In addition, the OPU 300 includes a light receiving element so-called a photodetector that receives a laser beam reflected from the signal layer Ma of the optical disc M, a PDIC (photo diode IC), or a photodetector (PD: photo detector) (not shown). A PD (not shown) includes a main light receiving portion (not shown) having a substantially rectangular shape in plan view corresponding to a main beam (0th order light) transmitted through a plurality of divided diffraction gratings (not shown) such as a quadrant type. , And at least three light-receiving portions including a pair of sub-light-receiving portions (not shown) in a plan view corresponding to a pair of sub-beams (± first-order diffracted light beams) that are diffracted and branched by passing through the diffraction grating. Composed. The main light receiving portion having a substantially rectangular shape in plan view is divided into four substantially equal parts and includes four segments having a substantially rectangular shape in plan view. In addition, the sub-light-receiving part having a substantially rectangular shape in plan view is divided into four substantially equal parts and includes four segments having a substantially rectangular shape in plan view. As described above, the OPU 300 is equipped with a PD having a plurality of light receiving units of a plurality of division types each having a plurality of substantially rectangular segments in plan view.

The PD receives laser light reflected from the signal layer Ma of the optical disc M, converts the signal into an electrical signal, and detects data, information, and signals recorded on the signal layer Ma of the optical disc M. ing. The PD receives the laser light reflected from the signal layer Ma of the optical disc M, converts the signal into an electric signal, and includes the lens holder assembly 100 including the lens holder 90 with OBLs 110 and 120 constituting the OPU 300. It is intended to operate the servo mechanism. The OPU 300 reads, for example, data / information / signal recorded on the optical disc M, writes data / information / signal on the optical disc M, and erases data / information / signal recorded on the optical disc M. In this case, each laser beam is irradiated on each light receiving portion of the PD, thereby detecting a main information signal of the optical disc M, a focus error signal, a tracking error signal, and the like for the optical disc M.

  As a focusing detection method of the focused spot of the optical disc M in the OPU 300, for example, a detection method based on a differential astigmatism method and the like can be cited. The differential astigmatism method is, for example, a method of detecting the displacement of a focused spot by detecting a point image distortion formed by an optical system having astigmatism. The focusing spot focusing detection method in the OPU 300 is, for example, a detection method based on the differential astigmatism method. As the focusing detection method, for example, other detection methods such as Foucault method and knife edge method may be used in combination.

  Moreover, as a tracking detection method of the condensing spot of the optical disk M in the OPU 300, for example, a detection method based on a differential push-pull (DPP) method and the like can be cited. The differential push-pull method is, for example, a method for detecting the displacement of a focused spot by using a main beam for reading and writing data and two sub beams for detecting a positional deviation correction signal. A tracking spot tracking detection method in the OPU 300 is, for example, a detection method based on a differential push-pull method. As the tracking detection method, for example, other detection methods such as a phase difference method and a heterodyne detection method may be used in combination.

  The OPU 300 includes a plurality of substantially rectangular plate-like magnetic members 50, for example, magnets 50. For example, as each magnetic member 50 corresponding to each coil 70, a magnet, magnetic steel, etc. are mentioned, for example. More specifically, each magnetic member 50 corresponding to each coil 70 is formed using, for example, a magnet / magnet steel. The magnetic member 50 is formed using, for example, a permanent magnet material. The magnet is, for example, a magnetic body mainly composed of iron or iron oxide. The magnetic member 50 is formed using, for example, a ferrite magnet containing iron oxide, barium, strontium, or the like. Alternatively, the magnetic member 50 is formed using, for example, a rare earth / alloy magnet, magnet steel, or the like containing iron, chromium, cobalt, samarium, neodymium, boron, or the like. Magnet steel is an alloy steel in which an alloying element such as chromium, aluminum, nickel, cobalt, etc. is added to iron, etc., and has permanent magnet characteristics with high coercive force and residual magnetic flux density by quench hardening, precipitation hardening, etc. In addition, for example, an alloy magnet that can be formed by rolling or the like is used.

  The substantially plate-like magnetic member 50 is formed using, for example, a ferrite magnet, a rare earth magnet, a plastic working magnet, a cast magnet, a bond magnet, a special magnet, or the like. For example, depending on the mounting structure of the magnet 50, the design / specification of the OPU 300, the bonding method of the magnet 50 and the yoke 60, etc., bond magnets such as vinyl chloride magnets, rubber magnets, plastic magnets, rare earth bonded magnets, etc. are used, and the substantially plate shape A magnetic member 50 having the above structure may be formed.

  For example, a permanent magnet material is used to form each magnet 50. For example, the magnet 50 is formed by using a ferrite magnet that is inexpensive, has a large coercive force, and is not easily demagnetized and has excellent corrosion resistance. If, for example, an inexpensive ferrite magnet is used as the magnet 50, a significant increase in price is avoided, and the sensitivity of the coil 70 to the magnet 50 is reduced to a necessary level without lowering the sensitivity of the coil 70 to the magnet 50. Maintained.

  In addition, for example, one bipolar driving magnet 50 having a positive electrode portion formed on one side of one surface and a negative electrode portion formed on the other side of the one surface side is used. Depending on the mounting structure of the magnet 50, the design / specification of the OPU 300, the bonding method of the magnet 50 and the yoke 60, etc., for example, the magnetic member 50 may be a one-pole / two-pole magnet or a multipole magnetized with two or more poles. A magnet may be used.

Further, the OPU 300 includes, for example, a substantially U-shaped magnetic coupling member 60, for example, a yoke 60, on which at least two, preferably four, more preferably six, substantially rectangular flat magnets 50 are provided. Yoke means, for example, one that structurally supports magnetic coupling. The yoke is designed to reduce leakage of magnetic force generated from a magnetic member such as a magnet. Here, for example, a back yoke 60 equipped with a magnet 50 is used as the yoke 60. For example, the back yoke 60 may be handled as the frame yoke 60. The frame means, for example, a frame, a framework, or a skeleton. The frame yoke is formed as a frame having a function as a yoke.

  The yoke 60 to which each magnetic member 50 such as each magnet / magnetic steel is attached is formed using a metal material to which a magnetic body is attracted. For example, a yoke 60 is formed by performing a press die forming process such as a punching process, a bending process, and a pressing process on a thin steel plate (not shown) such as a rolled steel plate. Specifically, for example, a metal material plate mainly composed of iron such as a rolled steel plate is used, and the yoke 60 is punched and bent by a press molding machine (none of which is shown). Examples of the metal material plate containing iron as a main component include a stainless steel plate, a rolled steel plate, and a strip steel. For example, SPCC, SPCD, SPCE, etc. defined on the basis of “JIS G 3141” can be used as the cold rolled steel plate and / or strip steel.

  In addition, the OPU 300 is bonded to a plurality of substantially rectangular flat plate-shaped magnets 50 bonded to or bonded to a substantially U-shaped yoke 60, or other various components are bonded and fixed without being separated. A member such as an adhesive (not shown) is provided. Examples of the adhesive (not shown) include resins / polymers such as one-component and / or two-component epoxy resins, acrylic resins, urethane resins, and methacrylic resins. For example, any one of resins / polymers selected from the above resin group is used as a polymer / main component constituting a one-component and / or two-component adhesive. The epoxy resin, urethane resin, thermosetting acrylic resin, and the like are, for example, thermosetting resin / polymer. Moreover, as a hardening | curing agent with respect to the main ingredient of a two-component polymer, polymers, such as polythiol etc., amine-type materials, such as a polyamidoamine, a modified polyamine, and a tertiary amine, are mentioned, for example. For example, any one of the polymers selected from the polymer group is used as the curing agent constituting the two-component adhesive. An adhesive made of a one-part polymer is excellent in, for example, adhesion workability, and an adhesive made of a two-part polymer is excellent in, for example, price characteristics of the adhesive.

  Further, as the adhesive, for example, an electron beam curable adhesive having a property of being cured by being irradiated with an electron beam such as light can be used. More specifically, an ultraviolet curable adhesive having a property of being cured when irradiated with ultraviolet rays can be used as the adhesive. More specifically, as the adhesive, an ultraviolet curable adhesive having a property of being cured by being irradiated with ultraviolet rays and having a thermosetting property can be used. Further, for example, an ultraviolet curable adhesive can be used together with a thermosetting adhesive.

The OPU 300 is mounted on a lens / holder assembly 100 having a substantially rectangular box shape, and a plurality of substantially linear metal elastic support members 80 that elastically support the lens / holder assembly 100, so-called a substantially linear shape. A metal suspension wire 80 is provided. For example, each of the substantially linear suspension wires 80 constituting the OPU 300 includes a focus direction D1 that is substantially along the optical axis direction D1 of the OBLs 110 and 120, and a direction that is substantially along the one radial direction D2 of the optical disc M. The tracking direction D2 extends substantially along the tangential direction D3 that is orthogonal to the tracking direction D2. For example, the tangential direction D3 is set to the other radial direction D3 of the optical disc M depending on the rotation position of the optical disc M or the like. Of the six left and right suspension wires 80 mounted on the lens / holder assembly 100 of the OPU 300, at least four of the left and right suspension wires 80, preferably six of the left and right suspension wires 80 are supplied with electricity as drive signals, control signals, and the like. As a result, drive signals, control signals, etc. are supplied to at least four coils 70, preferably six coils 70, which are mounted on the lens holder assembly 100 of the OPU 300 and are connected to the suspension wires 80 so as to be energized. Electricity flows.

  The substantially linear suspension wires 80 are formed using, for example, phosphor bronze conductive wires. For example, a piano wire defined based on “JIS G 3402”, a piano wire defined based on “JIS G 3522”, a hard steel wire defined based on “JIS G 3521”, and the like are used. Thus, a strand constituting the suspension wire 80 is formed. In addition, the suspension wire 80 is configured using, for example, a copper-plated lead wire that has been plated based on an electroplating method. More specifically, a steel wire or piano wire having excellent spring durability and fatigue strength is used, and this is coated with copper (Cu) having excellent conductivity to form a suspension wire 80 that can be energized. .

  The OPU 300 includes, for example, a substantially gel-like synthetic polymer damping material (not shown) that suppresses abnormal vibration generated in the suspension wire 80 and a synthetic resin damping holding member 140 that holds the damping material. Prepare. The suspension wires 80 are inserted into the holes 148 of the synthetic resin damping holding member 140 mounted on the rear side of the metal back yoke 60. Further, the hole 148 of the damping holding member 140 through which the suspension wire 80 is inserted is filled with a so-called dumping agent made of a synthetic polymer having a high flexibility. The damping holding member 140 is formed using a synthetic resin material having excellent insulating properties. The damping holding member 140 is formed based on an injection molding method that uses a synthetic resin material such as polycarbonate resin and is excellent in mass productivity.

  The OPU 300 includes a circuit board 150 to which each metal suspension wire 80 is connected and attached so as to be energized. The circuit board is called, for example, PWB (printed wired board / printed wiring board). The substrate body 151 of the PWB 150 is formed using a synthetic resin material having excellent insulating properties. In addition, a circuit conductor (not shown) on the synthetic resin substrate body 151 is formed as a metal foil having excellent conductivity. The synthetic resin substrate main body 151 on which a metal circuit conductor (not shown) is formed is coated with a synthetic resin material having excellent insulating properties on the synthetic resin substrate main body 151 on which the metal circuit conductor is formed. An insulating film (not shown) is formed on the surface.

  Further, the OPU 300 includes a heat radiating member such as a heat radiating agent (not shown) applied to a heat generation site such as an LD or PWB 150. Examples of the heat radiation agent (not shown) include heat radiation silicone grease, heat radiation silicone potting material, coating material, surface curable heat radiation silicone, heat radiation silicone adhesive, and the like.

  The OPU 300 includes a solder material that reliably connects the coil 70 and the suspension wire 80 and the like so as to be energized. The OPU 300 includes a solder material that reliably connects the suspension wire 80 and the like to the PWB 150 and the like so as to be energized. As a solder material used when soldering each coil 70, each suspension wire 80, etc., solder which does not contain lead in consideration of the environment, so-called lead-free solder is used. If lead-free solder is used as the solder material, for example, when the OPU 300, the optical disk device 10 including the OPU 300, and the like are disassembled and discarded, it is avoided that the natural environment is affected by lead.

The OPU 300 includes a cover plate 180 that protects various components of the OPU 300. When the OPU 300 is assembled, a cover plate 180 that protects various components, for example, is provided on the upper side of the OPU 300. The cover plate 180 is press-molded using, for example, a thin metal plate having excellent heat dissipation. Instead of the thin plate metal cover plate 180, for example, a synthetic resin black cover plate (180) may be provided on the upper side of the OPU 300.

  The OPU 300 includes a housing 200 (FIG. 2) in which various optical system parts, electrical system parts, drive system parts, and the like are equipped. The housing means, for example, a box in which an object such as an apparatus or a part is accommodated, a box shape, or something similar to a box. The housing 200 is formed using, for example, a metal material having excellent heat dissipation characteristics or a resin material having excellent sliding characteristics.

  As an optical system component mounted on the housing 200, for example, a laser diode (LD), a half-wave plate (1 / 2λ plate), a wide-band quarter-wave plate with aperture restriction (¼λ plate), a liquid crystal correction element (LCD: liquid crystal device / liquid crystal display), diffractive optical element (DOE: differential optical element), diffraction grating (inline grating), divergent lens, prism, polarizing beam splitter, dichroic filter, collimator lens, beam expander Lens, half mirror, reflect mirror, total reflection mirror, objective lens, front monitor diode, sensor lens, anamorphic lens, intermediate lens, photodetector, etc. The The OPU 300 includes the optical system parts.

  Moreover, as an electrical system component equipped in the housing 200, for example, a printed board, a storage device (ROM: read-only memory), a suspension wire, a coil, an actuator, a flexible printed circuit body, a laser driver, a laser diode, a liquid crystal correction element And a beam expander unit including a collimator lens, a front monitor diode, and a photodetector. The OPU 300 includes the electrical parts.

  Further, examples of the drive system components provided in the housing 200 include a beam expander unit including a suspension wire, a coil, a magnet, a yoke, an actuator, an objective lens, a lens holder, a collimator lens, and the like. The OPU 300 includes the drive system parts.

  Various parts such as various optical system parts, electrical system parts, and drive system parts constituting the OPU 300 are mounted on a housing 200 made of metal or synthetic resin. The housing 200 includes a housing main body 201 equipped with various parts such as various optical system parts, electric system parts, and drive system parts, and a pair of slidably projecting from the housing main body 201 and the first shaft member 410. Bearing portions 211 and 212 for the main shaft, and a bearing portion for the sub shaft that protrudes from the housing body 201 toward the opposite side to the main shaft bearing portions 211 and 212 and is movably fitted to the second shaft member 420. 221. The main shaft bearing portions 211 and 212 and the sub shaft bearing portion 221 are formed integrally with the housing body 201. The bearing portions 211 and 212 for the main shaft, the bearing portion 221 for the sub shaft, and the housing main body 201 are formed as one using, for example, the same metal material or the same synthetic resin material.

  For the housing 200 constituting the OPU 300, for example, a metal such as a non-ferrous metal or a die-cast alloy containing at least one element selected from the group consisting of aluminum (Al), magnesium (Mg), and zinc (Zn) is used. Formed. Aluminum, magnesium, and zinc are excellent in corrosion resistance and are non-ferrous metals having a specific gravity smaller than that of iron. For example, the housing 200 is formed using a non-ferrous metal material such as an aluminum alloy mainly composed of aluminum.

  Or the housing 200 which comprises OPU300 is excellent in electrical characteristics, such as a mechanical characteristic, a sliding characteristic, dimensional stability, heat resistance, injection moldability, an insulation characteristic, for example, and also weight reduction than an iron material etc. It is formed using a heat-resistant synthetic resin composition based on a polyarylene sulfide (PAS) resin such as a polyphenylene sulfide (PPS) resin. For example, the resin material has a smaller specific gravity than iron and is suitable for weight reduction.

  When the OPU 300 moves substantially along the longitudinal direction D2 of the substantially round bar-shaped shaft members 410 and 420, the first bearing part 211 having a substantially round hole shape and the first shaft member 410 having a substantially round bar shape are formed. Make sliding contact. Further, when the OPU 300 moves substantially along the longitudinal direction D2 of the substantially round bar-shaped shaft members 410, 420, the substantially round hole-shaped second bearing portion 212, and the substantially round bar-shaped first shaft member 410, , Is in sliding contact. In addition, when the OPU 300 moves substantially along the longitudinal direction D2 of the substantially round bar-shaped shaft members 410 and 420, a third bearing part 221 having a substantially U-shaped sliding bearing structure in a sideways manner and a substantially round bar-like shape are provided. The second shaft member 420 is in sliding contact.

  The shaft members 410 and 420 are formed as, for example, slide shafts 410 and 420 that can slide in contact with the bearing portions 211, 212, and 221 of the housing 200 of the OPU 300. The shaft members 410 and 420 are, for example, “hot-finished stainless steel rods” defined based on “JIS G 4304”, “cold-formed stainless steel rods” defined based on “JIS G 4318”, etc. Used to form. Further, the bearing portions 211, 212, 221 are formed as sliding portions 211, 212, 221 that can slide on the slide shafts 410, 420, for example.

  The OPU 300 has a substantially three-point structure that is stable on the pair of slide shafts 410 and 420 by the first sliding portion 211, the second sliding portion 212, and the third sliding portion 221 of the housing 200. It is supported movably. The OPU 300 is movable on the pair of slide shafts 410 and 420 by three main points of the first sliding part 211, the second sliding part 212, and the third sliding part 221 of the housing 200. Therefore, the friction is reduced as compared with, for example, an OPU (not shown) having a four-point support structure.

  Further, since the third sliding portion 221 constitutes an open and substantially U-shaped sliding bearing structure, for example, the assembling operation of the OPU 300 to the slide shaft 420 serving as the auxiliary shaft is performed. Is easily done. In addition, the third sliding portion 221 is configured to constitute an open sideways substantially U-shaped sliding bearing structure. Slight errors such as the parallelism of the second slide shaft 420 are absorbed by the third sliding portion 221 of the opened sideways substantially U-shaped sliding bearing structure.

  A tray 20 that can be inserted into and removed from the optical disk apparatus main body 11 of the optical disk apparatus 10 is used, and a disk M is provided in the optical disk apparatus main body 11 of the optical disk apparatus 10. Examples of the disc M provided in the optical disc apparatus main body 11 of the optical disc apparatus 10 include a CD optical disc, a DVD optical disc, an “HD DVD” optical disc, a “CBHD” optical disc, and a “Blu-ray Disc” optical disc. Various types of disks M are listed.

1A and 1B, a substantially plate-like clamper mounting sheet metal for the disc clamp device 430 mounted in the optical disc device main body 11 of the optical disc device 10 shown in FIG. 11 is a clamper mounting part that constitutes the disk clamp device 430 used when the optical disk M is rotatably fixed. The substantially plate-like clamper plate 30 for the disc clamp device 430 supports, for example, a clamper 440 that constitutes the disc clamp device 430 and fixes the optical disc M so as to be rotatable, for example, in a movable state.

  The substantially plate-like clamper plate 30 for the disc clamp device 430 of the optical disc device 10 is forced to turn off the power source of the optical disc device main body 11 including the optical disc M, and is manually operated. When the optical disk M in the optical disk apparatus main body 11 is to be taken out from the optical disk apparatus 10 by being pulled out, the optical disk apparatus main body 11 in which the optical disk M is housed is turned upside down. The optical disk M has a substantially plate-shaped optical disk dropping and catching prevention section 40 for preventing the optical disk M from being dropped from the tray 20 in the optical disk apparatus body 11 and being caught on the inside 12 of the optical disk apparatus body having a complicated structure.

  A substantially plate-like clamper plate 30 having a substantially plate-like optical disk drop catch prevention portion 40 is formed by punching a substantially plate-like metal material (not shown) and performing a press die forming process such as a bending process. Is done.

  Further, the optical disc apparatus 10 includes a substantially plate-like clamper plate 30 having the substantially plate-like optical disc fall-preventing portion 40 in the optical disc apparatus body 11.

  When the optical disk M is provided in the optical disk apparatus main body 11, the substantially plate-shaped optical disk is prevented from being caught on the substantially plate-like clamper plate 30 in the optical disk apparatus main body 11 used when the optical disk M is rotatably fixed. Part 40 is provided.

  A substantially plate-like optical disk drop catch prevention unit 40 is provided on the substantially plate-like clamper plate 30 for the disc clamp device 430 of the optical disc apparatus 10 shown in FIGS. 1A and 1B, and a substantially plate-like optical disc fall catch. If the substantially plate-like clamper plate 30 for the disc clamping device 430 having the anti-grinding portion 40 is provided in the optical disc device main body 11, the power of the optical disc device main body 11 including the optical disc M is forcibly turned off, and manual operation is performed. Is performed, and the tray 20 is pulled out from the optical disk apparatus main body 11, whereby the optical disk apparatus in the state in which the optical disk M is housed when the optical disk M in the optical disk apparatus main body 11 is to be taken out from the optical disk apparatus 10. When the main body 11 is turned upside down, the optical disk M is inserted into the optical disk apparatus main body 11. The optical disk M is dropped from the tray 20 and at that time, the optical disk M is inadvertently hooked into the optical disk apparatus main body 12 having a complicated structure, and the optical disk M in the optical disk apparatus main body 11 is successfully taken out from the optical disk apparatus main body 11. For example, because the optical disk M is forcibly pulled out of the optical disk apparatus main body 12 and the optical disk M that is inadvertently caught in the optical disk apparatus main body 12 having a complicated structure is damaged. Occurrence is avoided. Occurrence of the above problem is avoided by the substantially plate-shaped optical disk dropping prevention unit 40 provided in the substantially plate-shaped clamper plate 30 for the disk clamp device 430 in the optical disk device main body 11.

  The drawing direction D2a of the tray 20 with respect to the optical disc apparatus main body 11 is defined as the front side direction D2a of the optical disc apparatus main body 11, and the insertion direction D2b of the tray 20 with respect to the optical disc apparatus main body 11 is defined as the rear side direction D2b of the optical disc apparatus main body 11. In this case, the substantially plate-shaped optical disk falling catch preventing portion 40 extends substantially along the rear direction D2b of the substantially plate-shaped clamper plate body 31 constituting the substantially plate-shaped clamper plate 30.

In the substantially plate-like clamper plate 30 for the disk clamp device 430 of the optical disc apparatus 10 shown in FIGS. 1A and 1B, a substantially plate-like optical disk drop catch prevention portion is provided behind the substantially plate-like clamper plate main body 31. 40, and a substantially plate-like clamper plate 30 for the disc clamp device 430 having a substantially plate-like optical disc falling catch preventing portion 40 extending substantially along the rear direction D2b is provided in the optical disc apparatus main body 11. In this case, the occurrence of the above-mentioned problem is extended substantially along the rear direction D2b of the substantially plate-shaped clamper plate body 31 constituting the substantially plate-shaped clamper plate 30 for the disk clamp device 430 in the optical disk device body 11. It is avoided by the substantially plate-shaped optical disk drop catch prevention unit 40. The optical disc device main body 11 including the optical disc M is forcibly turned off, and the optical disc device main body 11 in which the optical disc M is housed is turned upside down and manually operated to perform the manual operation. When the optical disc M in the optical disc apparatus main body 11 is to be taken out from the optical disc apparatus 10 by pulling out the tray 20 from the optical disc apparatus 11, the substantially plate-like clamper plate 30 for the disc clamp device 430 in the optical disc apparatus main body 11 is obtained. Since the substantially plate-shaped optical disk dropping and catching prevention portion 40 extends substantially along the rear side direction D2b of the substantially plate-shaped clamper plate body 31 constituting the substantially plate-shaped clamper plate body 31 and / or the substantially plate. The optical disk M dropped on the main body 41 has a complicated structure. It is avoided that are inadvertently hooked to click device inside the body 12.

  The substantially plate-shaped optical disc falling catch preventing portion 40 is bent along a direction D1 substantially orthogonal to the substantially plate-shaped clamper plate body 31 constituting the clamper plate 30 and extends toward the tray 20. The plate-shaped clamper plate coupling portion 32 and the substantially plate-shaped clamper plate coupling portion 32 are bent substantially perpendicular to the plate-shaped clamper plate coupling portion 32 and are substantially plate-shaped clampers. Substantially plate-shaped optical disk dropping and catching prevention unit main body 41 extending substantially parallel to plate main body 31, and substantially plate-like optical disk dropping and catching prevention unit main body 41, and followed by optical disc dropping and catching prevention unit main body 41, and a substantially plate-like optical disc stop portion 42 that is bent along a direction D1 substantially orthogonal to 41 and extends toward the tray 20.

  The substantially plate-like clamper plate 30 for the disc clamp device 430 of the optical disc apparatus 10 shown in FIGS. 1A and 1B is provided with the substantially plate-like clamper plate coupling portion 32 and the substantially plate-like optical disc dropping hook. A substantially plate-shaped optical disk dropping and catching prevention portion 40 having a sticking prevention portion main body 41 and the substantially plate-like optical disc stop portion 42 is provided, and has a substantially plate-shaped optical disc falling and catching prevention portion 40 having the predetermined structure. If the substantially plate-like clamper plate 30 is provided in the optical disc apparatus main body 11, the occurrence of the above-mentioned problem is an abbreviation of the predetermined structure provided in the substantially plate-like clamper plate 30 for the disc clamp device 430 of the optical disc apparatus 10. This is surely avoided by the plate-like optical disk drop catch prevention unit 40. The power source of the optical disc apparatus main body 11 including the optical disc M is forcibly turned off, the manual operation is performed, and the tray 20 is pulled out from the optical disc apparatus main body 11, whereby the optical disc M in the optical disc apparatus main body 11 is moved into the optical disc apparatus 10. When the optical disk apparatus main body 11 with the optical disk M mounted therein is turned upside down when the optical disk M is dropped from the tray 20 in the optical disk apparatus main body 11, The optical disk M is, for example, a substantially plate-shaped optical disk drop hook extending substantially parallel to the substantially plate-shaped clamper plate body 31 via the substantially plate-shaped clamper plate body 31 and / or the substantially plate-shaped clamper plate coupling portion 32. The prevention unit main body 41 is securely provided. Therefore, the optical disk M dropped on the substantially plate-shaped clamper plate main body 31 and / or the substantially plate-shaped optical disk drop and catch prevention main body 41 is inadvertently hooked to the inside 12 of the optical disk apparatus body having a complicated structure. Is definitely avoided. Further, the substantially plate-like clamper plate main body 31 and / or the substantially plate-like optical disk stop portion 42 that is bent along the direction D1 substantially orthogonal to the optical disk dropping / preventing portion main body 41 and extends toward the tray 20. Alternatively, it is reliably avoided that the optical disk M dropped on the substantially plate-shaped optical disk drop / entrance prevention unit main body 41 is inadvertently caught on the inside 12 of the optical disk apparatus main body having a complicated structure.

In addition, since each part is bent, a substantially plate-like clamper plate 30 having a substantially plate-like optical disk falling catch preventing part 40 that is not easily deformed is configured.

  It should be noted that the optical disk dropping and catching prevention unit 40 provided in the optical disk apparatus main body 11 of the optical disk apparatus 10 may take other forms depending on the design / specifications of the optical disk apparatus 10 and the OPU 300 and the like. For example, the power of the optical disk apparatus main body 11 including the optical disk M is forcibly turned off, the manual operation is performed, and the tray 20 is pulled out from the optical disk apparatus main body 11, so that the optical disk M in the optical disk apparatus main body 11 is removed from the optical disk apparatus. When the optical disk apparatus main body 11 in which the optical disk M is housed is turned upside down when being taken out from the optical disk 10, the optical disk M is dropped from the tray 20 in the optical disk apparatus main body 11. The substantially plate-shaped optical disk falling catch preventing part 40 that prevents the optical disk apparatus main body 12 having a complicated structure from being hooked may have another form. For example, the optical disk drop and catch prevention section main body (41) and the optical disc stop section (42) constituting the optical disc fall and catch prevention section (40) are provided on other members other than the clamper plate (30) or other parts. May be equipped.

  The substantially plate-shaped optical disk drop catch prevention unit 40 is formed to serve as the substantially plate-shaped foreign matter accumulation prevention unit 40 that prevents foreign matters such as dust from collecting on the OBLs 110 and 120 of the OPU 300 in the optical disc apparatus 10. ing.

  1A and FIG. 1B, a substantially plate-shaped optical disk fall-and-preventing prevention portion that also serves as a substantially plate-like foreign matter accumulation prevention portion 40 on the substantially plate-like clamper plate 30 for the disk clamp device 430 of the optical disk device 10 shown in FIGS. 40, and a substantially plate-like clamper plate 30 having a substantially plate-like optical disk falling catch preventing portion 40 that also serves as the substantially plate-like foreign matter accumulation preventing portion 40 is provided in the optical disc apparatus main body 11, the above-mentioned problem. Generation | occurrence | production is avoided and generation | occurrence | production of the malfunction that foreign materials, such as dust and dust, accumulate on OBL110,120 of OPU300 in the optical disk apparatus 10 is avoided.

  The substantially plate-like clamper plate 30 having the substantially plate-like optical disk falling catch preventing portion 40 that also serves as the substantially plate-like foreign matter accumulation preventing portion 40 is formed by using a fastener (not shown) such as a screw, for example. Prepared for.

  Further, the clamper plate 30 in which the clamper 440 for fixing the optical disk M so as to be rotatable is mounted in a loosely fitted state, for example, is formed using a metal material. For example, in order to efficiently and inexpensively form a large amount of the clamper plate 30, a press die forming process such as a punching process, a bending process, and a pressing process is performed on a thin steel sheet (not shown) such as a rolled steel sheet. As a result, the clamper plate 30 is formed. Specifically, for example, a metal material plate mainly composed of iron such as a rolled steel plate is used, and the clamper plate 30 is punched and bent by a press molding machine (none of which is shown). Examples of the metal material plate containing iron as a main component include a stainless steel plate, a rolled steel plate, and a strip steel. For example, SPCC, SPCD, SPCE, etc. defined on the basis of “JIS G 3141” can be used as the cold rolled steel plate and / or strip steel.

Further, for example, in order to prevent the optical disk M from being inadvertently scratched or the like, the clamper plate (30) is formed using a synthetic polymer such as a resin material. For example, in order to efficiently and inexpensively form a large amount of the clamper plate (30), the clamper plate (30) is formed using a synthetic resin that has thermoplastic properties and can be injection-molded. For example, acrylonitrile butadiene styrene (ABS), polybutylene terephthalate (PBT), and polyamide (PA) are synthetic polymers that can be injection-molded and have thermoplastic properties. poly amide
), Polypropylene (PP: polypropylene), polyoxymethylene (POM), polycarbonate (PC: poly carbonate), PMA, LCP, PPS, etc., polyether ether ketone (PEEK (registered trademark): poly Examples thereof include ketone resins such as ether ether ketone) and polyaryl ether ketone (PEAK). For the clamper plate (30), for example, at least one resin composition selected from the group consisting of ABS, PBT, PP, POM, PC, PMMA, LCP, PPS, PAS, PEEK, and PEAK is used. Formed.

  The optical disc apparatus 10 (FIGS. 1 and 2) can be equipped with the optical disc M and can be loaded into and removed from the optical disc apparatus main body 11, the turntable 460 (FIG. 2), and the turntable 460. 1 includes a clamper 430 having a clamper 440 (FIG. 1B) opposite to the optical disk M, a clamp device 430 that can be fixed by sandwiching the optical disk M, a drive device 450 that includes the turntable 460 (FIG. 2), and that drives the optical disk M to rotate. An OPU 300 that irradiates M with laser light and a pair of slide shafts 410 and 420 that movably support the OPU 300 when the OPU 300 is moved along one radial direction D2 of the optical disk M are configured. The substantially plate-like clamper plate 30 includes, for example, a turntable 460 (FIG. 2) and a clamper 440 (FIG. 1B) opposed to the turntable 460. It is supposed to compose.

  A substantially rectangular box-shaped metal casing 400 (FIG. 2) constituting the optical disk apparatus 10 is formed in a substantially plate-shaped synthetic resin tray 20 (FIGS. 1A and 1) that can be moved in and out of the so-called cover 400. B)) is used, and the optical disc M is accommodated in the optical disc apparatus 10. A drive device 450 that rotates the optical disk M is housed in a cover 400 (FIG. 2) that constitutes the optical disk device 10. As the drive device 450, a disk drive device 450 having a synthetic resin turntable 460 having a substantially round plate shape on which the optical disk M is mounted is used. The OPU 300 that reads the data / information / signal of the optical disc M, records the data / information / signal on the optical disc M, and erases the data / information / signal of the optical disc M covers the optical disc apparatus 10. Equipped in 400. An optical disk apparatus 10 is assembled by attaching an upper metal cover (not shown) to the lower metal cover 400 equipped with various components.

  A clamp device 430 including a turntable 460 and a clamper 440 facing the turntable 460 is used, and an optical disc M in which a round hole Mb is formed in the center portion Mc is formed between the turntable 460 and the clamper 440. It is pinched securely in a positioned state and is detachably fixed. Further, the turntable 460 provided on the spindle motor (not shown) of the drive device 450 has both functions of aligning the optical disk M and ensuring stable high-speed rotation of the optical disk M. .

  The OPU 300 and the optical disk apparatus 10 including the OPU 300 are used as recording / reproducing apparatuses for recording data / information / signals on the various optical disks M and reproducing data / information / signals on the various optical disks M. Can be used. More specifically, the OPU 300 and the optical disc apparatus 10 including the OPU 300 record data / information / signals on the various optical discs M, and reproduce data / information / signals, etc. on the various optical discs M. The present invention can be used for a recording / reproducing / erasable apparatus that erases data / information / signals and the like of the various optical disks M. Further, the OPU 300 and the optical disk apparatus 10 including the OPU 300 can be used for a reproduction-only apparatus that reproduces data / information / signals and the like of the various optical disks M.

The OPU 300 and the optical disk device 10 including the OPU 300 and the clamper plate 30 are included in the optical disk device 10 that is assembled in, for example, a computer, an audio / video device, a game machine, an in-vehicle device (all not shown), and the like. The The OPU 300 and the optical disc apparatus 10 including the OPU 300 include, for example, computers such as notebook personal computers (PCs), laptop PCs, desktop PCs, in-vehicle computers, and computer games. It can be installed in a game machine such as a video game machine, and sound and / or video equipment such as a CD player / CD recorder, a DVD player / DVD recorder, etc. (both not shown). The OPU 300 includes a “CD” type optical disc, a “DVD” type optical disc,
It is possible to support a plurality of discs M such as a “DVD” optical disc, a “CBHD” optical disc, and a “Blu-ray Disc” optical disc. Further, the OPU 300 can be adapted to one optical disc having a plurality of signal surface portions. The OPU 300 includes, for example, computers, sound and / or video equipment, game machines, in-vehicle devices compatible with various optical disks such as “CD”, “DVD”, “HD DVD”, “CBHD”, “Blu-ray Disc”, and the like. It is possible to equip them with any of them (not shown).

  As mentioned above, although embodiment of this invention was described, embodiment mentioned above is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed / improved without departing from the gist thereof, and equivalents thereof are also included.

For example, “CD”, “DVD”, “HD DVD”, “CBHD”, “Blu-ray”
"Data", information, signals, etc. recorded on various media such as various optical disks such as "Disc", etc., and data, information, signals, etc., recorded on various media, such as various writable or rewritable optical disks, etc. A clamper mounting member used together with a pickup device capable of erasing data, information, signals, etc. recorded on various media such as writable or rewritable optical discs, the pickup device and the clamper mounting member The present invention can be applied to a disc device.

10 Optical disk device (disk device)
11 Optical disk device body (disk device body)
12 Inside the optical disk unit (inside the disk unit)
20 Tray (disc transport member)
30 Clamper plate (Clamper mounting member)
31 Clamper plate body (Clamper mounting member body)
32 Clamper plate coupling part (Clamper mounting member coupling part)
40 Foreign matter accumulation prevention part (disc drop catch prevention part)
41 Optical disc drop catch prevention unit main body (disc drop catch prevention unit main body)
42 Optical disc stop (disc stop)
50 Magnet (magnetic member)
60 Yoke (magnetic coupling member)
70 Coil 80 Suspension wire (support member)
90 Lens holder (holding member)
100 Lens / holder assembly (movable part assembly)
110,120 OBL (Lens)
111, 121 Curved surface portion 140 Damping holding member 148 Hole 150 PWB (substrate)
151 Substrate body 180 Cover plate 200 Housing 201 Housing body 211, 212, 221 Sliding part (bearing part)
300 OPU (Pickup device)
310 Actuator (Driver)
320 Fixed part 330 Movable part 400 Cover (housing)
410, 420 Slide shaft (shaft member)
430 Disc clamp device (clamp device)
440 clamper 450 disk drive device (drive device)
460 Turntable D1 Focusing direction (direction)
D2 Tracking direction (direction)
D2a Pull-out direction (front side direction)
D2b Insertion direction (rear direction)
D3 Tangential direction (direction)
M disc (media)
Ma signal layer (signal surface part)
Mb Round hole Mc Center

Claims (11)

  A clamper mounting member for a disc clamp device used when the disc is rotatably mounted when the disc is provided in the disc device main body, wherein the disc device main body in which the disc is housed is substantially upside down. A disc-clamping device clamper, comprising: a disc-dropping preventing portion that prevents the disc from dropping from being caught on the disc-conveying member in the disc-device main body and being caught inside the disc-device main body Mounting member.   When the drawing direction of the disk conveying member is the front direction with respect to the disk device main body, and the insertion direction of the disk conveying member is the rear direction with respect to the disk device main body, the disk drop catch prevention unit is 2. The clamper mounting member for a disk clamp device according to claim 1, wherein the clamper mounting member extends substantially along the rear side of the clamper mounting member main body.   3. The clamper mounting for a disk clamp device according to claim 1, wherein the disk drop catch prevention part has a disk drop catch prevention part main body extending substantially parallel to the clamper mounting member main body. Element.   The disk drop catch prevention part includes a disk drop catch prevention part main body extending substantially parallel to the clamper mounting member body, and the disk along a direction substantially orthogonal to the disk drop catch prevention part main body. 4. The clamper mounting member for a disk clamp device according to claim 1, further comprising a disk stop portion extending toward the transport member. 5.   The disk according to any one of claims 1 to 4, wherein the disk drop catch prevention part also serves as a foreign matter accumulation prevention part for preventing foreign matter from accumulating on a pickup device in the disk device. Clamper mounting member for clamp device.   A disc drop catch prevention unit that prevents the disc from being dropped from the disc transport member in the disc device main body and caught inside the disc device main body when the disc device main body in which the disc is housed is turned upside down. A disk device comprising:   When the disc is provided in the disc device main body, the disc drop catch preventing portion is provided in a clamper mounting member for a disc clamp device used when the disc is rotatably fixed. The disk device according to claim 6, characterized in that:   When the drawing direction of the disk conveying member is the front direction with respect to the disk device main body, and the insertion direction of the disk conveying member is the rear direction with respect to the disk device main body, the disk drop catch prevention unit is The disk device according to claim 7, wherein the disk device extends substantially along the rear side of the clamper mounting member.   9. The disk fall / hook prevention unit main body that extends substantially parallel to a clamper mounting member body that constitutes the clamper mounting member. 9. Disk unit.   The disk drop catch prevention part includes a disk drop catch prevention part main body extending substantially parallel to a clamper attachment member body constituting the clamper attachment member, and a substantially orthogonal to the disk drop catch prevention part main body. 10. The disk device according to claim 7, further comprising: a disk stop portion extending toward the disk conveying member along a direction in which the disk device moves.   The disk according to any one of claims 6 to 10, wherein the disk drop catch prevention part also serves as a foreign matter accumulation prevention part for preventing foreign matter from accumulating on a pickup device in the disk device. apparatus.

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