JP4446162B2 - RECORDING MEDIUM DRIVE DEVICE AND ELECTRONIC DEVICE HAVING THE SAME - Google Patents

Description

  The present invention relates to a technical field of a recording medium drive device and an electronic apparatus including the recording medium drive device. More specifically, the present invention relates to a technical field for preventing the holder and the recording medium cartridge from being damaged and damaged when the recording medium cartridge is inserted into the holder.

  There is a recording medium drive device for recording and / or reproducing information signals with respect to a recording medium such as a disk cartridge in which a recording medium such as a disk-shaped recording medium is rotatably accommodated in a case ( For example, see Patent Document 1).

  The recording medium drive device is provided with a holder for holding a disk cartridge, and when the disk cartridge is inserted into the holder, a shutter slidably supported by the case body is opened to record information signals on the disk-shaped recording medium. Or reproduction is performed.

  A holder for holding a disk cartridge is generally formed by bending a metal plate and has an opening. This opening is required for mounting the disk-shaped recording medium on a disk table disposed in the chassis located below the holder and allowing the optical pickup to access the disk-shaped recording medium.

  As shown in FIG. 43, for example, the holder a is rotatably supported by a chassis (not shown) located below the holder a, and connects the pair of side surfaces b and b and the upper edges of the side surfaces b and b. And a pair of projecting surface portions d and d projecting in a direction approaching each other from both lower edges of the side surface portions b and b, and the space between the projecting surface portions d and d is formed as the opening e described above. Yes. Further, the front end portions of the projecting surface portions d and d are bent to the opposite side of the connecting surface portion c and formed as receiving surface portions f and f. When the disc cartridge is inserted into the holder a, the front end edge of the projecting surface portions d and d and the disc cartridge are formed. Both are prevented from being damaged and scratched by contact with each other.

JP-A-8-96463

  By the way, there are various types of disc cartridges depending on the shapes and sizes thereof. As a disc cartridge having a shape for ensuring good insertability with respect to the holder, for example, Japanese Patent Application No. 2003-2003 filed by the present applicant. There is a disc cartridge x described in No. 281388 (see FIG. 43). Even when the disk cartridge x is formed in a state in which the peripheral surface y on the front end side in the insertion direction with respect to the holder a is formed in a substantially arc shape, and the insertion direction with respect to the holder a is deviated in the arc direction or the left-right direction, Since the peripheral surface y of this is in sliding contact with one side surface b of the holder a and is guided into the holder a, good insertability can be ensured.

  However, when a disc cartridge x having such a tip-side peripheral surface y formed in a substantially arcuate shape is to be inserted into the holder a, it is inclined so that the peripheral surface y is positioned below the holder a. In this case, the peripheral surface y of the disk cartridge x comes into contact with the inner edges g and g of the receiving surface portions f and f, and the disk cartridge x and the receiving surface portions f and f are damaged or scratched. There is a risk of sticking.

  Therefore, the recording medium drive device and the electronic apparatus equipped with the recording medium drive device of the present invention overcome the above-mentioned problems and prevent the holder and the recording medium cartridge from being damaged and damaged when the recording medium cartridge is inserted into the holder. Let it be an issue.

  In order to solve the above-described problems, the recording medium drive device of the present invention and the electronic apparatus provided with the recording medium have a recording medium housed in a case body in which the peripheral edge on the distal end side in the insertion direction is formed in a substantially arc shape. A holder having an insertion slot into which the medium cartridge is inserted and holding the recording medium cartridge inserted from the insertion slot; a recording / reproducing unit for recording and / or reproducing information signals with respect to the recording medium; and A chassis on which the recording / reproducing unit is disposed, and a thickness of the recording medium cartridge on the side surface and a connecting surface portion connecting the pair of side surfaces to one end in the thickness direction of the recording medium cartridge on the holder. A pair of projecting surface portions projecting in a direction approaching each other from the other end edge in the direction, and a connecting surface portion from the end edge on the insertion port side of the pair of projecting surface portions, respectively A receiving surface portion that protrudes to the opposite side, the pair of protruding surface portions of the holder are positioned closer to the chassis side than the coupling surface portion, and a recording medium cartridge for the holder is located on the edge that is opposite to the side surface portion of the receiving surface portion of the holder This is provided with a receiving portion formed in a planar shape or a curved shape that is displaced so as to approach each other in the insertion direction.

  Therefore, in the recording medium drive apparatus of the present invention and the electronic apparatus equipped with the recording medium drive apparatus, the recording medium cartridge can come into contact with the receiving portion when the recording medium cartridge is inserted into the holder.

  The recording medium drive apparatus according to the present invention has an insertion slot into which a recording medium cartridge in which a recording medium is housed is inserted in a case body in which the peripheral edge on the distal end side in the insertion direction is formed in a substantially arc shape. A holder for holding the recorded recording medium cartridge, a recording / reproducing unit for recording and / or reproducing information signals with respect to the recording medium, and a chassis in which the recording / reproducing unit is arranged. A pair of side surfaces protruding from the other side edge in the thickness direction of the recording medium cartridge in the thickness direction of the recording medium cartridge and a side surface portion of the side surface portion protruding from each other in the thickness direction of the recording medium cartridge A pair of projecting surface portions and a receiving surface portion projecting from the end of the pair of projecting surface portions on the insertion port side to the opposite side of the connecting surface portion, The exit surface portion is located on the chassis side from the connection surface portion, and is formed in a planar or curved surface that is displaced so as to approach each other as it goes in the insertion direction at the edge located on the opposite side of the side surface portion of the receiving surface portion of the holder A receiving portion is provided.

  Accordingly, when the recording medium cartridge is shifted from the holder toward the receiving surface when the recording medium cartridge is inserted into the holder, the recording medium cartridge comes into contact with the receiving portion, and the recording medium cartridge is inserted into the holder. Since the user does not insert the recording medium cartridge into the holder, the user can recognize that the recording medium cartridge has been erroneously inserted, and the receiving unit can be flat or curved so as to be displaced toward each other in the insertion direction. Since it is formed, it is possible to prevent the receiving surface portion and the case body from being damaged or damaged.

  In a second aspect of the present invention, a guide surface portion for guiding a recording medium cartridge formed and inserted into a flat shape or a curved surface into the holder is provided in a continuous portion of the receiving portion and the protruding surface portion. Therefore, even when the recording medium cartridge is shifted to the projecting surface side with respect to the holder at the start of inserting the recording medium cartridge into the holder, the recording medium cartridge is slidably contacted with the guide surface portion and guided into the holder. Therefore, the recording medium cartridge can be smoothly inserted into the holder.

  An electronic apparatus provided with the recording medium drive apparatus of the present invention is an electronic apparatus provided with a recording medium drive apparatus that records and / or reproduces information signals on / from a recording medium, and has a peripheral edge on the tip side in the insertion direction Has a slot for inserting a recording medium cartridge in which a recording medium is housed in a case formed in a substantially arc shape, and a holder for holding the recording medium cartridge inserted from the insertion slot; A recording / reproducing unit that records and / or reproduces an information signal, and a chassis in which the recording / reproducing unit is arranged, and a holder is provided in the thickness direction of the recording medium cartridge of the pair of side parts and the side parts. Projected in a direction approaching each other from the other edge in the thickness direction of the recording medium cartridge of the recording medium cartridge of the connecting surface portion and the side surface portion that connect between the one edge A pair of projecting surface portions and a receiving surface portion projecting from the end of the pair of projecting surface portions on the insertion port side to the opposite side of the connecting surface portion, and the pair of projecting surface portions of the holder are located closer to the chassis than the connecting surface portion In addition, a receiving portion formed in a planar or curved shape that is displaced so as to approach each other as it goes in the insertion direction is provided on an edge located on the opposite side of the side surface portion of the receiving surface portion of the holder. .

  Accordingly, when the recording medium cartridge is shifted from the holder toward the receiving surface when the recording medium cartridge is inserted into the holder, the recording medium cartridge comes into contact with the receiving portion, and the recording medium cartridge is inserted into the holder. Since the user does not insert the recording medium cartridge into the holder, the user can recognize that the recording medium cartridge has been erroneously inserted, and the receiving unit can be flat or curved so as to be displaced toward each other in the insertion direction. Since it is formed, it is possible to prevent the receiving surface portion and the case body from being damaged or damaged.

  In the invention described in claim 4, a guide surface portion is provided in the continuous portion of the receiving portion and the projecting surface portion to guide the recording medium cartridge formed and inserted into a flat or curved surface into the holder. Therefore, even when the recording medium cartridge is shifted to the projecting surface side with respect to the holder at the start of inserting the recording medium cartridge into the holder, the recording medium cartridge is slidably contacted with the guide surface portion and guided into the holder. Therefore, the recording medium cartridge can be smoothly inserted into the holder.

  The best mode of the recording medium drive apparatus of the present invention and an electronic apparatus having the same will be described below with reference to the accompanying drawings. In the best mode shown below, the electronic device of the present invention is applied to a portable game device, and the recording medium drive device of the present invention is applied to a recording medium drive device provided in the portable game device. It is.

  The scope of application of the present invention is not limited to a portable game device and a recording medium drive device provided in the portable game device, and the electronic device of the present invention is a variety of electronic devices that handle recording media, such as personal computers. Information processing devices such as telephones and facsimiles, information terminal devices such as PDAs (Personal Digital Assistants), imaging devices such as still cameras, electronic cameras and video cameras, and viewing of televisions and radios The present invention can be widely applied to equipment for recording, recording equipment that handles various recording media such as disk-shaped recording media and tape cassettes, and acoustic equipment. The present invention can be widely applied to a recording medium drive apparatus that performs recording and / or reproduction of an information signal with respect to a recording medium handled in the above.

  First, a recording medium cartridge having a recording medium will be described (see FIGS. 1 to 5).

  The recording medium cartridge 100 is configured such that a disk-shaped recording medium 200 is rotatably accommodated in a flat case body 101 (see FIGS. 1 and 2).

  As shown in FIG. 1, the case body 101 is formed such that a length L in an insertion direction with respect to a holder, which will be described later, is longer than a length H in a direction perpendicular to the insertion direction.

  The case body 101 is composed of an upper shell 102 and a lower shell 103 that are coupled to each other vertically (see FIG. 2). The case body 101 is formed as a circular arc surface 101a in which a half portion in the insertion direction (A direction shown in FIG. 2) is formed in a substantially semicircular shape, and a circumferential surface thereof is formed in an arc shape. Half of the case body 101 in the direction opposite to the insertion direction (direction B shown in FIG. 2) is formed in a horizontally long shape, and the surfaces continuous to both ends of the circular arc surface 101a are formed as side surfaces 101b and 101c respectively extending in the insertion direction. Has been. The peripheral surface between the end portions in the direction opposite to the insertion direction of the side surface 101b and the side surface 101c is formed as a curved surface 101d having a gentle convex curved surface.

  In the arc surface 101a of the case body 101, a function expansion groove 104 is formed at a position close to the left side surface 101b (see FIGS. 1 and 2). The opening edge 104a on the side surface 101b side of the function expansion groove 104 is located at a continuous portion of the arc surface 101a and the side surface 101b. For example, when the recording medium cartridge 100 is inserted into the holder, the function expansion groove 104 is used as a groove for engaging the pulling means when the recording medium cartridge 100 is pulled into the holder to perform reliable pulling. When the recording medium cartridge 100 is taken out from the holder, it can be used as a groove for engaging with the taking-out means for reliable take-out, and is intended to expand the function.

  In the case body 101, an insertion groove 105 is formed in a portion extending from the right side surface 101c to the circular arc surface 101a (see FIGS. 2 and 3). An engaging groove 101e extending in the insertion direction is formed on the side surface 101c at a position above the insertion groove 105 (see FIG. 4).

  As shown in FIG. 3, the case body 101 has a table insertion hole 101f formed at the center of the lower surface thereof, and a shallow slide recess 101g formed on the right side of the table insertion hole 101f on the lower surface. A light transmitting hole 101h for transmitting laser light emitted from a light emitting portion provided in an optical pickup described later is formed in a part of the slide recess 101g.

  On the lower surface of the case body 101, positioning holes 101i and 101i are formed at positions in the vicinity of the curved surface 101d so as to be separated from each other left and right.

  An engaging recess 101j is formed at a substantially central portion of the side surface 101b in the insertion direction. The engaging recess 101j is open sideways and downward.

  A relief recess 101k is formed at the end of the side surface 101b in the direction opposite to the insertion direction. The escape recess 101k is opened in the direction opposite to the side and the insertion direction.

  In the half of the case body 101 in the direction opposite to the insertion direction, there are portions where the recording medium 200 is not stored at both left and right ends, and the right end portion of this portion is formed as the mechanism arrangement portion 106. (See FIG. 5). The mechanism arrangement portion 106 is provided with a spring hanging shaft 107 and a locking projection 108.

  A toggle spring 109 is supported on the mechanism arrangement portion 106. The toggle spring 109 is composed of a coil portion 109a, a first arm portion 109b and a second arm portion 109c protruding from the coil portion 109a, respectively, and the tip end portion of the first arm portion 109b is supported by the spring hook shaft 107. Yes.

  A shutter 110 is slidably supported on the case body 101. Each part of the shutter 110 is integrally formed of a plate-shaped metal material. As shown in FIG. 4, as shown in FIG. 4, a substantially rectangular opening / closing surface portion 111 having the largest area and a right edge of the opening / closing surface portion 111 protrude upward. Side part 112, engagement piece part 113 projecting leftward from a portion excluding both ends in the longitudinal direction of side part 112, and projecting leftward from one end part in the longitudinal direction of side part 112 And a support surface portion 114.

  A working hole 112 a is formed in the side portion 112.

  A spring hook hole 114 a is formed at the tip of the support surface portion 114. A lock lever 115 that is long in one direction is rotatably supported on the lower surface of the support surface portion 114. The lock lever 115 has a substantially central portion in the longitudinal direction as a rotation fulcrum, and one end portion in the longitudinal direction is a pressed portion 115a. The engaging protrusion 115b is formed at the other end in the longitudinal direction and protrudes downward. The lock lever 115 is biased by a biasing spring (not shown) in a direction in which the pressed portion 115a protrudes from the action hole 112a of the side portion 112.

  The shutter 110 has an opening / closing surface portion 111 supported by a slide recess 101g, a side portion 112 supported by a side surface 101c, and an engagement piece portion 113 slidably engaged with an engagement groove 101e formed on the side surface 101c. The case body 101 is slidably supported. In a state where the shutter 110 is supported by the case body 101, the second arm portion 109 c of the toggle spring 109 is engaged with the spring hooking hole 114 a of the support surface portion 114.

  The shutter 110 is slid relative to the case body 101 between a closed position where the opening / closing surface 111 closes the light transmission hole 101h and an open position where the light transmission hole 101h is opened.

  When the shutter 110 is in the closed position, the toggle spring 109 biases the shutter 110 in the insertion direction, that is, the A direction shown in FIG. 2, and the shutter 110 is held in the closed position. At this time, the lock lever 115 supported by the support surface portion 114 of the shutter 110 is engaged with the locking protrusion 115b by the urging force of the urging spring (see FIG. 5), and the shutter 110 is in the closed position. Locked. A pressed portion 115 a of the lock lever 115 is located in a working hole 112 a formed in the side portion 112.

  On the other hand, in the state where the shutter 110 is in the open position, the shutter 110 is urged by the toggle spring 109 in the direction opposite to the insertion direction, that is, the B direction shown in FIG. 2, and the shutter 110 is held in the open position.

  A core 201 made of a magnetic metal material is attached to the center of the recording medium 200 housed inside the case body 101 (see FIG. 2), and the core 201 corresponds to the table insertion hole 101f of the case body 101. Is located.

  Next, an electronic device will be described.

  The electronic device (game device) 1 is formed in, for example, a flat horizontally long shape (see FIGS. 6 to 8), and required parts are arranged in the outer casing 2.

  A display unit 3 is disposed at the center of the front surface 2a of the outer casing 2, and a plurality of operation buttons (control keys) 4, 4,... Are disposed at the left and right ends of the front surface 2a (FIG. 6). reference). A central portion in the left-right direction of the rear surface 2b of the outer casing 2 is provided as a lid portion 5 that can be opened and closed (see FIGS. 7 and 8). For example, the lid 5 is opened and closed by rotating around the lower end thereof as a fulcrum.

  A recording medium drive device 6 is provided inside the outer casing 2 (see FIGS. 9 and 10). The recording medium drive device 6 includes a chassis 7, required parts disposed in the chassis 7, a holder 8 rotatably supported by the chassis 7, and various circuits including a drive circuit.

  In the following description of the recording medium drive device 6, for convenience, the direction in which the recording medium cartridge 100 is inserted into the holder 8 is the rear, the direction in which the inserted recording medium cartridge 100 is removed from the holder 8 is the front, and the holder 8. In the following description, the position of the chassis 7 is the bottom and the position of the chassis 7 is the bottom.

  The chassis 7 is formed by integrally forming each part with a plate-shaped metal material, for example, and protrudes upward from the left and right side edges of the base part 9 formed in a substantially square shape and the rear end part of the base part 9. Support protrusions 10 and 10.

  A table arrangement hole 9a is formed at the center of the base portion 9, and a pickup arrangement hole 9b is formed to the right of the table arrangement hole 9a. A motor arrangement hole 9 c is formed at the rear end portion of the base portion 9.

  Four cradle parts 11, 11, 12, and 12 are provided on the base part 9 so as to be separated from each other in the front-rear and left-right directions. Positioning pins 13, 13 are provided on the two cradle parts 11, 11 positioned in the front, and the outer diameters of the locating pins 13, 13 are smaller than the outer diameters of the cradle parts 11, 11.

  Damper mounting portions 14, 14,... Are formed at substantially four corner positions of the base portion 9, respectively. The damper mounting portions 14, 14,... Are formed at positions one step lower than the other portions of the base portion 9 by the steps 15, 15,. The damper mounting portions 14, 14,... Are formed with mounting notches 14a, 14a,..., Respectively, and the mounting notches 14a, 14a,.

  A disk table 16 is arranged in the table arrangement hole 9 a of the base portion 9. The disk table 16 has a table portion 16a and a center ring protrusion 16b provided at the center of the table portion 16a, and is fixed to a motor shaft of a spindle motor (not shown). The centering protrusion 16b is provided with a magnet (not shown). The spindle motor is fixed to the base portion 9 by attaching the substrate 17 attached thereto to the opening edge of the table arrangement hole 9a, and the disk table 16 is arranged in a state of protruding upward from the table arrangement hole 9a. The disk table 16 is rotated as the spindle motor rotates.

  An optical pickup 18 is arranged in the pickup arrangement hole 9 b of the base portion 9. The optical pickup 18, the disk table 16, and the spindle motor constitute a recording / reproducing unit that records and / or reproduces information signals with respect to the recording medium 200 of the recording medium cartridge 100.

  The optical pickup 18 has a moving base 19 and an objective lens driving device 20 supported on the moving base 19. The moving base 19 is provided with bearing portions 19a and 19b. A lead screw 21 is inserted into and screwed into the bearing portion 19a, and the bearing portion 19b is supported by the guide shaft 22. A worm 23 is fixed to the tip of the lead screw 21.

  The optical pickup 18 is arranged in the pickup arrangement hole 9b by the lead screw 21 being rotatably supported on the lower surface side of the base portion 9 and the guide shaft 22 being fixed on the lower surface side of the base portion 9. In the arrangement hole 9b, the lead screw 21 rotates and is guided by the guide shaft 22 to be movable.

  A drive motor 24 is arranged in the motor arrangement hole 9 c of the base portion 9. The drive motor 24 is provided with attached portions 25, 25 that protrude laterally, and a drive gear 26 that is fixed to the motor shaft is disposed on the lower surface side of the drive motor 24. A flexible printed wiring board 27 is connected to the driving motor 24, and a driving current is supplied to the driving motor 24 from a driving circuit (not shown) via the flexible printed wiring board 27.

  The drive motor 24 is arranged in the motor arrangement hole 9c by attaching the mounted portions 25, 25 to the opening edge of the motor arrangement hole 9c.

  A transmission gear 29 is supported on the lower surface side of the base portion 9 via a support shaft 28. The transmission gear 29 meshes with the drive gear 26 and the worm 23 fixed to the lead screw 21. Accordingly, the driving force of the driving motor 24 is transmitted to the lead screw 21 via the driving gear 26, the transmission gear 29 and the worm 23, and the optical pickup 18 is moved in a direction corresponding to the rotation direction of the driving motor 24.

  The support protrusions 10 and 10 of the chassis 7 are respectively provided with support shafts 10a and 10a protruding sideways.

  The holder 8 is formed, for example, by integrally forming each part with a plate-shaped metal material, and as shown in FIGS. 9 and 11, a connection surface portion 30 formed in a substantially square shape, and both left and right sides of the connection surface portion 30. Side surfaces 31 and 32 respectively suspended from the edges, projecting surface portions 33 and 34 projecting in a direction approaching each other from the lower edges of the side surfaces 31 and 32, and hanging from the front edges of the projecting surface portions 33 and 34, respectively. It comprises receiving surface portions 35 and 35 provided. The protruding surface portion 33 positioned on the left side is provided at a position extending from the front end of the side surface portion 31 to the center portion in the front-rear direction, and the protruding surface portion 34 positioned on the right side is provided only at the position on the front end side of the side surface portion 32.

  A space surrounded by the connecting surface portion 30, the side surface portions 31, 32, and the protruding surface portions 33, 34 is formed at the front end of the holder 8, and this space serves as an insertion port 36 into which the recording medium cartridge 100 is inserted.

  An opening 30 a is formed in the center of the connecting surface portion 30 of the holder 8. The opening 30a is formed in order to reduce the weight of the holder 8. Insertion holes 30b, 30b,... Are formed at substantially four corner positions of the connecting surface portion 30, respectively. The connecting surface portion 30 is provided with a plurality of pressing spring portions 30c, 30c,. The holding springs 30c, 30c,... Serve to press the case body 101 of the recording medium cartridge 100 against the receiving parts 11, 11, 12, 12 in a state where the recording medium cartridge 100 is held by the holder 8, or By maintaining a certain distance between the holder 8 and the lid 5 in a state where the lid 5 of the outer casing 2 is opened, the recording medium cartridge 100 can be easily inserted into and removed from the holder 8.

  Recessed concave reinforcing ribs 37, 37,... Opened to the projecting surface portions 33, 34 are formed on the connecting surface portion 30 (see FIGS. 11 and 12). The concave reinforcing ribs 37, 37,... Are formed at least in a portion other than the opening edge of the opening 30a, and are not formed in the front portion 30d of the opening 30a at the central portion in the left-right direction of the connecting surface portion 30. Accordingly, the front portion 30d of the opening 30a at the central portion of the connecting surface portion 30 in the left-right direction is formed into a flat surface.

  An opening-side reinforcing rib 38 is formed on the opening edge of the opening 30a of the connecting surface portion 30 so as to be punched out on the opposite side of the projecting surface portions 33 and 34.

  On the front edge of the connecting surface portion 30, a dual-purpose reinforcing rib 30 e that is bent and inclined to the opposite side of the protruding surface portions 33 and 34 is formed.

  At the rear end portions of the side surface portions 31 and 32 of the holder 8, supported holes 31a and 32a are formed, respectively.

  The side surface portions 31 and 32 are provided with insertion guide portions 31b and 32b, respectively, by bending the front end portions thereof in directions away from each other.

  A protruding portion insertion hole 31c is formed at a position near the front end of the left side surface portion 31 (see FIG. 9).

  A jump-out preventing spring 39 is attached to the outer surface of the side portion 31 (see FIGS. 9 to 11). The spring-out preventing spring 39 is composed of a spring part 39a which is long in the front-rear direction and an engaging protrusion 39b which protrudes rightward from the lower edge of the front end part of the spring part 39a. The engaging protrusion 39b is formed in a triangular shape convex rightward, and includes a first inclined edge 39c that is displaced rightward as it goes rearward and a second inclined edge 39d that is displaced rightward as it goes forward. It is formed continuously in front and rear.

  The rear end portion of the spring-out preventing spring 39 is attached to the outer surface of the side surface portion 31, and the engaging projection 39 b projects from the projection insertion hole 31 c into the holder 8.

  A protruding piece insertion hole 32c is formed in the right side surface portion 32 at a position near its front end. The side surface portion 32 is provided with a shutter opening piece 32d formed by being bent inward at a rear position of the projecting piece insertion hole 32c, and is bent inward at a rear position of the shutter opening piece 32d. A posture holding piece 32e formed in this manner is provided. The shutter opening piece 32d and the posture holding piece 32e are each formed in a tongue piece shape that is long in the front-rear direction.

  A shutter spring 40 is attached to the outer surface of the side surface portion 32 (see FIGS. 9 and 11). The shutter spring 40 includes a spring part 41 that is long in the front-rear direction and an unlocking protrusion 42 that protrudes leftward from the lower edge of the front end of the spring part 41. The unlocking protrusion 42 is formed in a triangular shape convex leftward, and includes a first inclined edge 42a that is displaced leftward as it goes rearward, and a second inclined edge 42b that is displaced leftward as it goes forward Are formed continuously in front and rear.

  The protruding surface portions 33 and 34 are positioned to face the connecting surface portion 30 and function as opposing surface portions.

  The rear end of the shutter spring 40 is attached to the outer surface of the side surface portion 32, and the unlocking projection piece 42 projects into the holder 8 from the projection piece insertion hole 32 c.

  Insertion holes 33a and 34a are formed in the projecting surface portions 33 and 34 of the holder 8, respectively. The insertion holes 33 a and 34 a are formed at positions immediately below the insertion holes 30 b and 30 b formed at the front end portion of the connecting surface portion 30.

  Mounting protrusions 33b and 34b are respectively formed on the inner end portions of the projecting surface portions 33 and 34, and the mounting recesses 33b and 34b are made one step lower than the other portions. The projecting surface portions 33 and 34 are respectively formed with projecting portion insertion holes 33c and 34c at the front end portions thereof.

  A jump-out preventing portion 43 is attached between the upper surfaces of the protruding surface portions 33 and 34. The pop-out preventing portion 43 is formed long in the left-right direction, and both end portions thereof are attached to the attachment recesses 33b and 34b from the upper side by, for example, caulking.

  As described above, by attaching the pop-out preventing portion 43 to the upper side of the projecting surface portions 33 and 34, it is possible to prevent the pop-out preventing portion 43 from falling off the holder 8.

  Note that the pop-out preventing portion 43 can be formed integrally with the holder 8. By forming the pop-out preventing part 43 integrally with the holder 8, it is possible to reduce the number of parts and the manufacturing cost.

  A portion on the front end side excluding the left and right end portions of the pop-out preventing portion 43 is constituted by a first guide portion 43a and a second guide portion 43b. As shown in FIG. 13, the first guide portion 43a is inclined so as to be displaced downward as it goes forward, and the second guide portion 43b is continuous with the lower end of the first guide portion 43a and is in a horizontal plane. Is formed.

  In a state in which the pop-out preventing portion 43 is attached between the protruding surface portions 33 and 34, as shown in FIG. The upper surface of the second guide portion 43b of the pop-out preventing portion 43 is positioned below the upper surfaces of the projecting surface portions 33 and 34.

  The upper end portions of the receiving surface portions 35 and 35 of the holder 8 are formed as guide surface portions 35a and 35a that are inclined so as to be displaced rearward as they go upward (see FIG. 11). The inner end portions of the receiving surface portions 35, 35 of the holder 8 are formed as receiving portions 35b, 35b that are bent rearward and have a gently curved surface or a flat surface. The receiving portions 35b and 35b are displaced so as to approach each other as they go rearward.

  The continuous portions of the receiving portions 35b and 35b and the projecting surface portions 33 and 34 are formed as guide surface portions 44 and 44 that are displaced so as to approach each other as they move backward as they are flat or curved.

  In the holder 8, the support shafts 10 a and 10 a of the support protrusions 10 and 10 provided at the rear end portion of the chassis 7 are inserted into the supported holes 31 a and 32 a formed at the rear end portions of the side surface portions 31 and 32, respectively. The support shafts 10a and 10a are pivotally supported by the chassis 7 with fulcrums.

  In a state where the holder 8 is supported by the chassis 7, the pop-out prevention unit 43 is immediately in front of the recording / reproducing unit constituted by the optical pickup 18, the disk table 16, etc., that is, between the insertion slot 36 and the recording / reproducing unit. (Refer to FIG. 14). Further, the insertion holes 30b, 30b,..., 33a, 34a formed in the connecting surface portion 30 or the projecting surface portions 33, 34 of the holder 8 are directly above the damper mounting portions 14, 14,. (Refer to FIG. 15).

  Dampers 45, 45,... Are attached to the damper mounting portions 14, 14,. As shown in FIG. 16, the damper 45 is formed, for example, in a substantially cylindrical shape that is short in the axial direction with a rubber material, and has a mounting groove 45a that extends in the circumferential direction at the center in the axial direction. The center hole of the damper 45 is formed as a screw insertion hole 45b.

  The dampers 45, 45,... Are inserted from the side into the damper mounting portions 14, 14,... (See FIG. 16), and the damper mounting portions 14, 14 are respectively inserted into the mounting recessed grooves 45a, 45a,. ,... Are partially fitted, and mounting screws 46, 46,... Are inserted into the screw insertion holes 45 b, 45 b,. Are fixed to the inside of the outer casing 2 or screwed to a mounting base (not shown) that forms a part of the outer casing 2. At this time, since the insertion holes 30b, 30b,... Are formed in the connecting surface portion 30 of the holder 8 and the insertion holes 33a, 34a are formed in the protruding surface portions 33, 34, the holder 8 is supported by the chassis 7. The mounting jig 47 such as a screwdriver is inserted into the insertion holes 30b, 30b,..., 33a, 34a and the mounting screws 46, 46,. it can.

  Thus, in the recording medium drive device 6, since the insertion holes 30b, 30b,..., 33a, 34a for inserting the mounting jig 47 into the holder 8 are formed, the holder 8 is a chassis. . Can be screwed onto the mounting base while being supported by the mounting base 7, and the chassis 7 can be attached to the mounting base via the dampers 45, 45,. Workability can be improved.

  Further, as described above, the damper mounting portions 14, 14,... Do not protrude sideways from the chassis 7 and are positioned corresponding to the outer shape of the connection surface portion 30 of the holder 8. The recording medium drive device 6 and the electronic device 1 can be downsized.

  When the mounting screws 46, 46,... Are screwed onto the mounting base, the chassis 7 is floatingly supported on the mounting base by the dampers 45, 45,..., And vibration from the mounting base to the chassis 7 is absorbed. Thus, a good recording / reproducing operation by the recording / reproducing unit is performed.

  The operation when the recording medium cartridge 100 is inserted into the holder 8 and when the recording medium cartridge 100 is taken out from the holder 8 will be described below.

  In a state before the recording medium cartridge 100 is inserted into the holder 8, the engagement protrusion 115 b of the lock lever 115 of the shutter 110 is engaged with the lock protrusion 108 provided on the mechanism arrangement portion 106 of the case body 101. (See FIG. 5), the shutter 110 is locked at a closing position that closes the light transmission hole 101h.

  When the lid 5 of the electronic device 1 is opened, the holder 8 is simultaneously rotated with respect to the chassis 7 so that the recording medium cartridge 100 can be inserted (see FIG. 8).

  When the recording medium cartridge 100 starts to be inserted into the holder 8, for example, as shown in FIG. 18, when the recording medium cartridge 100 is shifted to the upper side with respect to the holder 8, The peripheral edge of the case body 101 is slidably contacted with the dual-purpose reinforcing rib 30 e formed in the portion, and the recording medium cartridge 100 is guided into the holder 8. Accordingly, the recording medium cartridge 100 can be smoothly inserted into the holder 8.

  When the recording medium cartridge 100 is inserted into the holder 8, for example, as shown in FIG. 19, when the recording medium cartridge 100 is shifted downward from the holder 8, the receiving surface portion The periphery of the case body 101 is slidably brought into contact with the guide surface portions 35 a and 35 a or the guide surface portions 44 and 44 formed at the upper end portions of the 35 and 35, and the recording medium cartridge 100 is guided into the holder 8. Accordingly, the recording medium cartridge 100 can be smoothly inserted into the holder 8.

  When the recording medium cartridge 100 is further shifted downward with respect to the holder 8 at the start of insertion of the recording medium cartridge 100 into the holder 8, as shown in FIG. The arc surface 101 a of the case body 101 is in contact with the receiving portions 35 b and 35 b formed at the inner end portion of the 35, and the recording medium cartridge 100 is not inserted into the holder 8.

  Therefore, the user can recognize that the recording medium cartridge 100 is erroneously inserted into the holder 8, and the receiving portions 35b and 35b are formed in gently curved surfaces bent rearward. The receiving surface portions 35 and 35 and the case body 101 can be prevented from being damaged or damaged.

  Further, at the start of insertion of the recording medium cartridge 100 into the holder 8, for example, as shown in FIG. 21, the recording medium cartridge 100 is shifted in the left-right direction or tilted in the left-right direction with respect to the holder 8. In this case, the arc surface 101a of the case body 101 is slidably contacted with the insertion guide portions 31b and 32b formed at the front end portions of the side surface portions 31 and 32, and the recording medium cartridge 100 is guided into the holder 8.

  Even when the insertion guide portions 31 b and 32 b are not provided on the side surface portions 31 and 32 of the holder 8, the recording medium cartridge 100 moves in the horizontal direction with respect to the holder 8 at the start of insertion of the recording medium cartridge 100 into the holder 8. When the recording medium cartridge 100 is slidably contacted with the front edges of the side portions 112 and 112 when the recording medium cartridge 100 is shifted to the right or inclined in the left-right direction, the recording medium cartridge 100 is guided into the holder 8. .

  As described above, the recording medium cartridge 100 is inserted into the holder 8 from the arc surface 101a side, but there is a space between the projecting surface portions 33 and 34 and the case body 101 has an arc surface 101a. Therefore, as shown in FIG. 22, the recording medium cartridge 100 may be tilted with respect to the holder 8 while being lowered.

  However, the recording medium cartridge 100 is prevented from jumping out downward of the holder 8 by coming into contact with the pop-out preventing portion 43 spanned between the projecting surface portions 33 and 34.

  Further, as described above, the pop-out preventing unit 43 is disposed immediately in front of the recording / reproducing unit constituted by the optical pickup 18, the disc table 16, and the like, so that the contact between the case body 101 and the recording / reproducing unit is prevented. Thus, the reliability of the recording / reproducing operation by the recording / reproducing unit can be improved.

  Furthermore, since the pop-out preventing portion 43 is provided at a substantially central portion between the side surface portions 31 and 32 of the holder 8, the portion that is most likely to pop out downward from the case body 101, that is, the central portion in the left-right direction is prevented from popping out. It is possible to reliably prevent the recording medium cartridge 100 from protruding downward from between the protruding surface portions 33 and 34 in contact with the portion 43.

  When the recording medium cartridge 100 is inserted into the holder 8 and comes into contact with the pop-out prevention portion 43, the case body 101 slides in contact with the second guide portion 43b and the first guide portion 43a of the pop-out prevention portion 43 in order. Guided to the side (see FIG. 23). Accordingly, the smooth movement of the recording medium cartridge 100 in the holder 8 is not hindered by the contact of the case body 101 with the pop-out preventing portion 43, and the insertion of the recording medium cartridge 100 into the holder 8 is appropriately and reliably performed. Can be done.

  On the other hand, when the recording medium cartridge 100 is inserted into the holder 8, the recording medium cartridge 100 may incline in a state where it is raised upward as shown in FIG. At this time, the upper edge of the circular arc surface 101a of the case body 101 is in sliding contact with the lower surface of the central portion in the left-right direction of the connecting surface portion 30, that is, the lower surface of the portion 30d, but the concave reinforcing rib 37 is formed on the portion 30d. Absent.

  Therefore, the upper edge of the case body 101 does not enter the concave reinforcing rib 37 and the smooth movement of the recording medium cartridge 100 in the holder 8 is not hindered, and the strength of the holder 8 is maintained at a certain level or more. The recording medium cartridge 100 can be inserted into the holder 8 properly and reliably.

  Further, since the opening side reinforcing rib 38 formed at the opening edge of the opening 30a of the connecting surface portion 30 is formed by being punched out on the opposite side of the protruding surface portions 33 and 34, the upper edge of the case body 101 is opened. Smooth movement within the holder 8 of the recording medium cartridge 100 can be ensured without contacting the side reinforcing ribs 38 (see FIG. 25).

  When the recording medium cartridge 100 is further inserted into the holder 8, the shutter opening piece 32 d provided on the side surface portion 32 of the holder 8 is inserted into the insertion groove 105 of the recording medium cartridge 100. At this time, the unlocking protrusion 42 of the shutter spring 40 attached to the side surface portion 32 of the holder 8 rides on the outer surface of the side portion 112 of the shutter 110 and slides on the side portion 112 (see FIG. 26). ). Accordingly, the spring portion 41 of the shutter spring 40 is elastically deformed.

  When the recording medium cartridge 100 is further inserted into the holder 8, the shutter opening piece 32d comes into contact with the rear edge of the side portion 112 of the shutter 110 (see FIG. 27). At the same time, the unlocking projecting piece 42 that has run over the side portion 112 of the shutter 110 is inserted into the working hole 112a as the spring portion 41 is elastically restored.

  When the unlocking protrusion 42 is inserted into the action hole 112a, the pressed portion 115a of the lock lever 115 is pressed by the unlocking protrusion 42, and the lock lever 115 rotates against the biasing force of the biasing spring. Moved. Accordingly, the engagement of the engaging protrusion 115b with the locking protrusion 108 is released, and the lock at the closed position of the shutter 110 is released.

  At this time, in addition to the shutter opening piece 32d, a posture holding piece 32e provided on the rear side is also inserted into the insertion groove 105 formed in the case body 101 (see FIG. 28).

  Therefore, the posture of the recording medium cartridge 100 is held horizontally in the holder 8 by the shutter opening piece 32d and the posture holding piece 32e, and an appropriate insertion state of the recording medium cartridge 100 can be ensured.

  In addition to the function of opening the shutter 110, the shutter opening piece 32d also functions as a means for holding the posture of the recording medium cartridge 100 in the holder 8, so that the functionality can be improved while reducing the number of parts. Can do.

  When the lock at the closed position of the shutter 110 is released, the shutter opening piece 32d is in contact with the rear edge of the side portion 112. Accordingly, when the recording medium cartridge 100 is further inserted into the holder 8, the shutter 110 Is moved forward relative to the case body 101, and the shutter 110 is opened (see FIG. 29).

  When the recording medium cartridge 100 is inserted into the holder 8, the engagement protrusion 39b of the spring-out prevention spring 39 is temporarily inserted into the engagement recess 101j formed on the side surface 101b. Due to the rearward movement of the recording medium cartridge 100, the opening edge on the front side of the engagement recess 101j is in sliding contact with the first inclined edge 39c of the engagement protrusion 39b, and the engagement protrusion 39b is bent while the spring portion 39a is bent outward. Is taken out from the engaging recess 101j.

  When the insertion of the recording medium cartridge 100 into the holder 8 is completed, the shutter 110 is moved to the open position, and as described above, the shutter 110 is urged in the direction opposite to the insertion direction by the toggle spring 109. The shutter 110 is held in the open position (see FIG. 30).

  In the state where the insertion of the recording medium cartridge 100 into the holder 8 is completed, the engaging protrusion 39b of the jump-out preventing spring 39 is inserted into the relief recess 101k formed on the side surface 101b (see FIG. 31). Accordingly, the urging force of the jump-out preventing spring 39 is not applied to the case body 101 of the recording medium cartridge 100, and unnecessary tension on the recording medium cartridge 100 from the jump-out preventing spring 39 can be prevented.

  When the insertion of the recording medium cartridge 100 into the holder 8 is completed and the lid 5 of the outer casing 2 is closed, the holder 8 holding the recording medium cartridge 100 is rotated in a direction approaching the chassis 7, and the case body 101. Positioning pins 13 and 13 provided on the chassis 7 are inserted into the positioning holes 101i and 101i formed in the first and second positions, respectively (see FIG. 32), and the recording medium cartridge 100 is positioned with respect to the chassis 7. At this time, the disk table 16 is inserted into the table insertion hole 101 f of the case body 101, the core 201 of the recording medium 200 is attracted to the magnet provided in the centering protrusion 16 b, and the recording medium 200 is mounted on the disk table 16. .

  In the recording medium cartridge 100, the case body 101 is pressed against the chassis 7 by pressing springs 30 c, 30 c,... Provided on the connection surface 30 of the holder 8, and the lower surface of the case body 101 is provided on the chassis 7. It is held in contact with the cradle parts 11, 11, 12, 12.

  The disc-shaped recording medium 100 mounted on the disc table 16 is rotated along with the disc table 16, and information signals are recorded on or reproduced from the disc-shaped recording medium 100 by driving the optical pickup 18.

  When the recording or reproducing of the information signal with respect to the disk-shaped recording medium 100 is completed and the lid 5 is opened again, the holder 8 is rotated to the side away from the chassis 7 and the recording medium 200 is mounted on the disk table 16. Is released. At this time, the arc surface 101 a of the case body 101 is pressed by an unillustrated eject lever supported by the chassis 7, and a part of the recording medium cartridge 100 protrudes from the holder 8 toward the front side. At this time, since the shutter 110 has the unlocking protrusion 42 of the shutter spring 40 inserted in the working hole 112a, a part of the recording medium cartridge 100 protrudes from the holder 8 toward the front side, thereby the case body 101. Is moved forward with respect to the shutter 110, and the shutter 110 is moved from the open position to the closed position.

  As described above, when the lid 5 is opened and the recording medium cartridge 100 is pressed by the eject lever and protrudes from the holder 8 to the front side, the spring for preventing popping out is caused by the forward movement of the recording medium cartridge 100. 39 spring part 39a is elastically deformed and the engaging protrusion 39b is taken out from the relief recess 101k formed on the side surface 101b, and then the engaging protrusion 39b corresponds to the engaging recess 101j formed on the side surface 101b. The engagement protrusion 39b is engaged with the engagement recess 101j (see FIG. 33).

  In a state where the engagement protrusion 39b is engaged with the engagement recess 101j, the pressing force from the eject lever to the recording medium cartridge 100 is not already applied, and the recording medium cartridge 100 is engaged with the engagement recess 101j. The forward movement is stopped by engaging the mating protrusion 39b.

  Accordingly, only a part of the recording medium cartridge 100 is protruded from the holder 8, and unnecessary jumping out of the holder 8 of the recording medium cartridge 100 is prevented.

  The user can take out the recording medium cartridge 100 from the holder 8 by grasping and pulling out the portion protruding from the holder 8. At this time, when the unlocking protrusion 42 is pulled out from the action hole 112a, the lock lever 115 is rotated by the urging force of the urging spring, and the engaging protrusion 115b is engaged with the locking protrusion 108. The shutter 110 is locked again at the closed position.

  In addition, the second inclined edge 39d of the spring 39 for preventing jump-out is in sliding contact with the opening edge of the engaging recess 101j, and the engaging protrusion 39b is in sliding contact with the side surface 101b so that the recording medium cartridge 100 is taken out from the holder 8. It is.

  Hereinafter, means for preventing erroneous insertion of the recording medium cartridge 100 into the holder 8 will be described (see FIGS. 34 to 36).

  First, an error occurs when the recording medium cartridge 100 is upside down only, that is, when the upper shell 102 is positioned downward and the lower shell 103 is positioned upward, and the recording medium cartridge 100 is inserted into the holder 8 from the arc surface 101a side. A means for preventing the insertion will be described (see FIG. 34).

  When the recording medium cartridge 100 is inserted into the holder 8 in the opposite direction only in the vertical direction, the shutter opening piece 32d comes into contact with the opening edge of the function expansion groove 104 formed in the arc surface 101a, and the recording medium cartridges larger than this. The insertion of 100 into the holder 8 is restricted.

  As described above, in the recording medium drive device 6, since the shutter opening piece 32d for opening the shutter 110 of the recording medium cartridge 100 is used as a means for preventing erroneous insertion, erroneous insertion is prevented. Therefore, it is not necessary to provide another dedicated means for reducing the manufacturing cost.

  In addition, since the function expansion groove 104 capable of expanding the function is used to prevent erroneous insertion of the recording medium cartridge 100, a dedicated groove for preventing erroneous insertion of the recording medium cartridge 100 is recorded. There is no need to form the recording medium cartridge 100, and the manufacturing cost of the recording medium cartridge 100 can be reduced accordingly.

  Next, a description will be given of means for preventing erroneous insertion when the recording medium cartridge 100 is inserted in the holder 8 from the curved surface 101d side, that is, in the opposite direction (see FIG. 35). In this case, the vertical direction is not questioned.

  When the recording medium cartridge 100 is inserted into the holder 8 in the front-back direction, one end of the curved surface 101d comes into contact with the shutter opening piece 32d, and further insertion of the recording medium cartridge 100 into the holder 8 is restricted. The

  Next, a means for preventing erroneous insertion when the recording medium cartridge 100 is inserted in the holder 8 in a state where the recording medium cartridge 100 is in the horizontal direction, that is, in a state where the circular arc surface 101a and the curved surface 101d are positioned on the left and right will be described (see FIG. 36). In this case, the vertical direction is not questioned.

  Even if the recording medium cartridge 100 is to be inserted into the holder 8 in the sideways state, as described above, the length L in the insertion direction is made longer than the length H in the direction orthogonal to the insertion direction of the case body 101. Therefore, it is not inserted into the holder 8 due to the difference between the length L and the length H (see FIG. 1).

  Next, a modified example of the recording medium cartridge will be described (see FIGS. 37 to 42).

  The recording medium cartridge 300 according to this modification is different from the recording medium cartridge 100 described above only in that no shutter is provided, the shape of the right side surface is different, and the shape of the lower surface is different. Only the portions that are different from the recording medium cartridge 100 will be described in detail, and the other portions will be denoted by the same reference numerals as the same portions in the recording medium cartridge 100, and detailed description thereof will be omitted.

  The recording medium cartridge 300 is configured such that a disk-shaped recording medium 400 is rotatably accommodated in a flat case body 301 (see FIGS. 37 and 38).

  The case body 301 includes an upper shell 302 and a lower shell 303 that are coupled to each other vertically. The case body 301 is formed as a circular arc surface 301a in which a half portion in the insertion direction (direction A shown in FIG. 37) is formed in a substantially semicircular shape, and a circumferential surface thereof is formed in an arc shape. The half of the case body 301 in the direction opposite to the insertion direction (direction B shown in FIG. 37) is formed in a horizontally long shape, and the surfaces continuous to both ends of the arc surface 301a are formed as side surfaces 301b and 301c, respectively, extending in the insertion direction. Has been. The peripheral surface between the end portions in the direction opposite to the insertion direction of the side surface 301b and the side surface 301c is formed as a curved surface 301d having a gentle convex curved surface.

  In the arc surface 301a of the case body 301, a function expansion groove 304 is formed at a position close to the left side surface 301b. An opening edge 304a on the side surface 301b side of the function expansion groove 304 is located at a continuous portion of the arc surface 301a and the side surface 301b.

  As shown in FIG. 38, the case body 301 has a table insertion hole 301f formed at the center of the lower surface thereof, and a light transmission hole 301h formed on the right side of the table insertion hole 301f on the lower surface. The light transmission hole 301 h is larger than the light transmission hole 101 h in the recording medium cartridge 100.

  On the lower surface of the case body 301, positioning holes 301i and 301i are formed at positions in the vicinity of the curved surface 301d so as to be separated from each other in the left-right direction.

  An engaging recess 301j is formed at a substantially central portion in the insertion direction of the left side surface 301b. An escape recess 301k is formed at the end of the side surface 301b in the direction opposite to the insertion direction.

  On the right side surface 301c, a clearance groove 301l opened laterally is formed at a position continuous with the light transmission hole 301h on the side opposite to the insertion direction (see FIG. 39).

  Of the opening edge of the light transmission hole 301h, the end portion on the insertion direction side is formed as an inclined portion 301m that is displaced toward the upper shell 302 as it approaches the light transmission hole 301h (see FIGS. 38 and 39).

  In the case body 301, an insertion groove 305 is formed continuously from the clearance groove 301l in a portion extending from the right side surface 301c to the arc surface 301a. The insertion groove 305 communicates with the light transmission hole 301h.

  A core 401 made of a magnetic metal material is attached to the center of the recording medium 400 accommodated in the case body 301 (see FIG. 38), and the core 401 corresponds to the table insertion hole 301f of the case body 301. Is located.

  The operation when the recording medium cartridge 300 is inserted into the holder 8 and when the recording medium cartridge 300 is removed from the holder 8 will be described below (see FIGS. 40 to 42).

  In the operation of the recording medium cartridge 300, since the recording medium cartridge 300 does not have a shutter, there is no operation related to the shutter, and only the operation different from the operation of the recording medium cartridge 100 will be described in detail. do.

  As the recording medium cartridge 300 is inserted into the holder 8, the shutter opening piece 32d provided on the side surface portion 32 of the holder 8 is inserted into the insertion groove 305 of the recording medium cartridge 300 (see FIG. 40). At this time, the unlocking protrusion 42 of the shutter spring 40 attached to the side surface portion 32 of the holder 8 is also inserted into the insertion groove 305.

  In addition to the shutter opening piece 32d, a posture holding piece 32e provided behind the shutter opening piece 32d is also inserted into the insertion groove 305.

  When the recording medium cartridge 300 is inserted into the holder 8, as in the case of the recording medium cartridge 100, the engaging protrusion 39 b of the spring 39 for preventing popping is formed in the engaging recess 301 j formed on the side surface 301 b. Although temporarily inserted, the opening edge on the front side of the engaging recess 301j comes into sliding contact with the first inclined edge 39c of the engaging protrusion 39b by the rearward movement of the recording medium cartridge 300, and the spring portion 39a is outward. The engaging protrusion 39b is taken out from the engaging recess 301j while being bent to the right.

  In the state where the insertion of the recording medium cartridge 300 into the holder 8 is completed, as in the case of the recording medium cartridge 100, the engaging protrusion 39b of the spring 39 for preventing the jump is formed in the escape recess 301k formed on the side surface 301b. Inserted.

  At the same time, the unlocking protrusion 42 of the shutter spring 40 is inserted into the escape groove 301l formed on the side surface 301c (see FIG. 41). Accordingly, the urging force of the shutter spring 40 is not applied to the case body 301 of the recording medium cartridge 300, and unnecessary tension on the recording medium cartridge 300 from the shutter spring 40 can be prevented.

  When the insertion of the recording medium cartridge 300 into the holder 8 is completed and the lid 5 of the outer casing 2 is closed, the recording medium 400 is mounted on the disk table 16, and the disk table 16 is rotated and the optical pickup 18 is driven. Information signals are recorded on or reproduced from the disc-shaped recording medium 300.

  When the recording or reproduction of the information signal with respect to the disc-shaped recording medium 300 is completed and the lid 5 is opened again, the recording medium cartridge 300 is pressed by the eject lever and protrudes from the holder 8 toward the front side. At this time, the protrusion preventing spring 39 is elastically deformed by the forward movement of the recording medium cartridge 300, and the engaging protrusion 39b is taken out from the escape recess 301k formed on the side surface 301b. Is positioned corresponding to the engagement recess 301j formed on the side surface 301b, the engagement protrusion 39b is engaged with the engagement recess 301j.

  At the same time, the shutter spring 40 is elastically deformed by the forward movement of the recording medium cartridge 300, and the unlocking protrusion 42 is taken out from the escape groove 301l formed on the side surface 301c.

  The user can take out the recording medium cartridge 300 from the holder 8 by gripping and pulling out the portion protruding from the holder 8.

  As described above, in the electronic apparatus 1, in addition to the recording medium cartridge 100 having the shutter 110, it is possible to use the recording medium cartridge 300 that does not have the shutter, which improves usability for the user. Can be planned.

  In the recording medium cartridge 300, as described above, the inclined portion 301m that is displaced toward the upper shell 302 as the light transmitting hole 301h is approached is formed at the opening edge of the light transmitting hole 301h.

  Accordingly, when the recording medium cartridge 300 is inserted into and removed from the holder 8, the recording medium cartridge 300 moves up and down relative to the holder 8 depending on the clearance between the thickness of the recording medium cartridge 300 and the vertical height of the inner space of the holder 8. In this case, the projecting surface portion 34 of the holder 8 and the edge of the pop-out preventing portion 43 are in sliding contact with the inclined portion 301m (see FIG. 42), and smooth insertion and removal operations of the recording medium cartridge 300 with respect to the holder 8 are performed. Can be secured.

  The specific shapes and structures of the respective parts shown in the above-described best mode are merely examples of the implementation of the present invention, and the technical scope of the present invention is limited by these. It should not be interpreted in a general way.

FIG. 2 to FIG. 42 show the best mode for carrying out the present invention, which is an enlarged plan view of a recording medium cartridge. FIG. 4 is an enlarged perspective view of a recording medium cartridge. FIG. 4 is an enlarged perspective view showing the back side of the recording medium cartridge. FIG. 3 is an enlarged perspective view showing a part of a recording medium cartridge in an exploded manner. FIG. 3 is an enlarged perspective view showing a recording medium cartridge with a part cut away. It is a perspective view of an electronic device. It is a perspective view which shows the back side of an electronic device. It is a perspective view of the electronic device shown with the cover part opened. 2 is an enlarged exploded perspective view of a recording medium drive device. FIG. 2 is an enlarged perspective view of a recording medium drive device. FIG. FIG. 3 is an enlarged perspective view of a recording medium drive device that is shown with a part of the holder cut away. It is an expanded sectional view of the holder which follows the XII-XII line of FIG. It is an expanded sectional view which shows a jump-out prevention part. It is a schematic side view which shows the positional relationship of a jump-out prevention part and a recording / reproducing part by making a part into a cross section. It is an expansion perspective view which shows the positional relationship of the insertion hole of a holder, and the damper attachment part of a chassis. FIG. 17 shows a procedure for attaching the damper together with FIG. 17, and is an enlarged perspective view showing a state when the damper is attached to the damper attaching portion. It is an expansion perspective view which shows a state when inserting a mounting screw in the damper attached to the damper attaching part and fixing a chassis. FIGS. 19 to 25 show each state when the recording medium cartridge is inserted into the holder, and FIG. 19 is a concept showing a case where the recording medium cartridge is inserted in a state shifted to the upper side with respect to the holder. FIG. FIG. 6 is a conceptual diagram illustrating a case where a recording medium cartridge is inserted in a state of being shifted downward from a holder. FIG. 6 is a conceptual diagram illustrating a case where a recording medium cartridge is in contact with a receiving portion of a holder. FIG. 6 is a conceptual diagram illustrating a case where a recording medium cartridge is inserted in a state shifted in the left-right direction or tilted in the left-right direction with respect to the holder. FIG. 4 is an enlarged side view showing a part of a cross-section of a case where a recording medium cartridge is inserted in a state where it is inclined downward with respect to a holder. FIG. 23 is an enlarged side view, partially in section, showing a state in which the recording medium cartridge is inserted while being guided by the guide portion of the pop-out preventing portion following FIG. FIG. 6 is an enlarged side view showing a part of a cross-section when the recording medium cartridge is inserted in a state where the recording medium cartridge is tilted upward with respect to the holder. FIG. 25 is an enlarged side view showing a state in which a recording medium cartridge is inserted, partially in section, following FIG. 24. FIG. 4 is an enlarged plan view showing a part of the state in which the recording medium cartridge is inserted into the holder and the unlocking protrusion of the shutter spring rides on the shutter. It is an enlarged plan view which shows the state where the lock | rock in the obstruction | occlusion position of a shutter was cancelled | released, making a part cross section. FIG. 5 is an enlarged side view showing a state in which the shutter opening piece and the posture holding piece are inserted into the insertion groove of the case body, partly in cross section. It is an enlarged plan view which shows the state in the middle of the shutter being open | released, making a part a cross section. It is an enlarged plan view which shows a state where the shutter has been moved to the open position with a part in cross section. FIG. 4 is an enlarged plan view showing a part of the state in which the engagement protrusion of the spring for preventing jumping is engaged with the engagement recess of the recording medium cartridge. FIG. 4 is an enlarged side view showing a state in which a recording medium cartridge is positioned and a disc-shaped recording medium is mounted on a disc table, partly in section. FIG. 4 is an enlarged plan view showing a state in which a part of an engagement protrusion of a spring for preventing popping is engaged with a relief recess of a recording medium cartridge, with a part thereof as a cross section. FIG. 35 and FIG. 36 show a state when the recording medium cartridge is erroneously inserted into the holder, and this figure is a conceptual diagram showing a case where the recording medium cartridge is inserted only in the opposite direction. FIG. 4 is a conceptual diagram illustrating a case where a recording medium cartridge is inserted in a state where the recording medium cartridge is in the opposite direction. FIG. 6 is a conceptual diagram illustrating a case where a recording medium cartridge is inserted in a horizontal state. 38 to 42 show the structure or operation of a modified example of the recording medium cartridge, and this figure is an enlarged perspective view of the recording medium cartridge. FIG. 4 is an enlarged perspective view showing the back side of the recording medium cartridge. FIG. 4 is an enlarged perspective view showing a part of a recording medium cartridge. FIG. 6 is an enlarged plan view showing a part of a state in which the unlocking protrusion of the shutter spring is inserted into the insertion groove. FIG. 5 is an enlarged plan view showing a part of a state in which a lock release protrusion of a shutter spring is inserted into a relief groove. It is an enlarged side view which shows the state which the sloping part of a case body is in sliding contact with the protrusion surface part, making a part a cross section. It is a schematic perspective view which shows an example of the conventional holder with a recording medium cartridge.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Electronic device, 6 ... Recording medium drive device, 7 ... Chassis, 8 ... Holder, 30 ... Connection surface part, 31 ... Side surface part, 32 ... Side surface part, 33 ... Projection surface part, 34 ... Projection surface part, 35 ... Reception surface part, 35b ... receiving part, 36 ... insertion port, 44 ... guide surface part, 100 ... recording medium cartridge, 101 ... case body, 200 ... recording medium, 300 ... recording medium cartridge, 301 ... case body, 400 ... recording medium

Claims (4)

The case has an insertion slot into which a recording medium cartridge in which a recording medium is housed is housed in a case body having a substantially arc-shaped peripheral edge on the distal end side in the insertion direction, and holds the recording medium cartridge inserted from the insertion opening. With a holder,
A recording / reproducing unit that records or reproduces an information signal on the recording medium, or both,
A chassis on which the recording / reproducing unit is disposed,
The holder protrudes in a direction approaching each other from a pair of side portions and a connecting surface portion connecting the side portions of one end edge in the thickness direction of the recording medium cartridge and the other end edge of the side portion in the thickness direction of the recording medium cartridge. A pair of projecting surface portions and a receiving surface portion projecting from the end on the insertion port side of the pair of projecting surface portions to the opposite side of the connecting surface portion, respectively.
The pair of projecting surface portions of the holder are located closer to the chassis than the connecting surface portion,
A recording medium having a receiving portion formed in a flat or curved shape that is displaced so as to approach each other as it goes in the insertion direction at an edge located on the opposite side of the side surface portion of the receiving surface portion of the holder. Drive device. 2. The recording according to claim 1, wherein a guide surface portion for guiding a recording medium cartridge formed and inserted into a flat shape or a curved surface into a holder is provided in a continuous portion of the receiving portion and the protruding surface portion. Media drive device. An electronic device including a recording medium drive device that records or reproduces an information signal with respect to a recording medium, or both,
The case has an insertion slot into which a recording medium cartridge in which a recording medium is housed is housed in a case body having a substantially arc-shaped peripheral edge on the distal end side in the insertion direction, and holds the recording medium cartridge inserted from the insertion opening. With a holder,
A recording / reproducing unit that records or reproduces an information signal on the recording medium, or both,
A chassis on which the recording / reproducing unit is disposed,
The holder protrudes in a direction approaching each other from a pair of side portions and a connecting surface portion connecting the side portions of one end edge in the thickness direction of the recording medium cartridge and the other end edge of the side portion in the thickness direction of the recording medium cartridge. A pair of projecting surface portions and a receiving surface portion projecting from the end on the insertion port side of the pair of projecting surface portions to the opposite side of the connecting surface portion, respectively.
The pair of projecting surface portions of the holder are located closer to the chassis than the connecting surface portion,
A recording medium having a receiving portion formed in a planar shape or a curved surface that is displaced so as to approach each other as it goes in the insertion direction at an edge located on the opposite side of the side surface portion of the receiving surface portion of the holder. Electronic equipment with a drive device. 4. The recording according to claim 3, wherein a guide surface portion for guiding a recording medium cartridge formed and inserted into a flat shape or a curved surface into a holder is provided in a continuous portion between the receiving portion and the protruding surface portion. An electronic device equipped with a medium drive device.

Images