WO2017064765A1 - メディア再生装置およびシャッタ機構 - Google Patents
メディア再生装置およびシャッタ機構 Download PDFInfo
- Publication number
- WO2017064765A1 WO2017064765A1 PCT/JP2015/079015 JP2015079015W WO2017064765A1 WO 2017064765 A1 WO2017064765 A1 WO 2017064765A1 JP 2015079015 W JP2015079015 W JP 2015079015W WO 2017064765 A1 WO2017064765 A1 WO 2017064765A1
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- WIPO (PCT)
- Prior art keywords
- shutter
- pair
- spring
- arm
- base
- Prior art date
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/0401—Details
- G11B17/0405—Closing mechanism, e.g. door
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/05—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs not contained within cartridges
- G11B17/051—Direct insertion, i.e. without external loading means
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
Definitions
- the present invention relates to a media reproducing apparatus provided with a shutter mechanism for preventing entry of foreign matter from an insertion port for inserting a medium such as a CD (Compact Disc).
- a shutter mechanism for preventing entry of foreign matter from an insertion port for inserting a medium such as a CD (Compact Disc).
- a shutter mechanism is the opening / closing device described in Patent Document 1.
- the pair of link members are formed of thin sheet metal, and a through hole through which the threaded portion of the mounting bolt passes is provided at one end.
- Each link member is attached to the slide chassis so as to be rotatable about one end.
- the other end portions of the pair of link members are rotatably connected to each other, and the other end portions are connected to each other so as to be movable along both longitudinal directions.
- a spring is stretched between the other end portions of the pair of link members. The spring biases the pair of link members in a direction in which the other end portions are brought close to each other.
- the screw portion of the mounting bolt moves in the slide hole of the slide chassis, and the link member rotates with respect to the slide chassis around the one end portion, and the other end portions of the link member rotate and slide.
- the slide chassis is slid with respect to the front panel in which the insertion port is formed.
- the spring is merely stretched between the other ends of the pair of link members. For this reason, there is a problem that the spring naturally vibrates due to an impact when the slide chassis moves to a closed position that closes the insertion port or an open position that opens, and abnormal noise such as chatter noise occurs. In addition, even when external vibrations are applied, the springs may vibrate and generate abnormal noise.
- a viscoelastic member such as a cushion against the spring.
- the viscoelastic member largely changes in characteristics depending on the temperature. Therefore, depending on the temperature, the viscoelastic member is hardly elastically deformed and pushes the spring in an illegal direction. Then, problems such as the movement of the slide chassis getting worse or stopping during the slide are caused. In addition, the cushion was shaved while the opening and closing were repeated, and the vibration suppression effect was reduced.
- the present invention has been made to solve the above-described problems, and it is an object of the present invention to reduce abnormal noise by suppressing the vibration of a spring spanned between a pair of arms constituting a shutter mechanism. .
- the media reproducing apparatus is provided with a panel provided with an insertion port for inserting media, a pair of base grooves, a rotating shaft convex portion, a guide convex portion, and a cam convex portion, and is fixed to the back surface of the panel. And a pair of shafts that engage with the pair of base grooves, and the pair of shafts slides in the pair of base grooves, so that a closed position and an insertion port for closing the insertion port on the front of the panel are provided.
- a shutter that slides to an open position that opens, a pair of arms that engage with a pair of shafts, and a pair of arms that are movably engaged in directions in which the other ends approach or move away from each other;
- a spring that pulls the arms together, and one or both of the pair of arms sinks between the spring and the arm when the shutter is in two positions, a closed position and an open position.
- the pair of protrusions sink between the spring and the arm and lift the spring away from the shutter.
- the spring is less likely to vibrate naturally and the generation of abnormal noise can be suppressed.
- the spring is extended and the force to press the shutter toward the panel is increased, it is difficult for the shutter to rattle even when subjected to vibration from the outside, and the generation of abnormal noise due to the knocking sound between the shutter and the panel can be suppressed. it can.
- FIG. 7A is a rear view of one arm of the shutter mechanism
- FIG. 7B is a plan view
- 8A is a rear view of the other arm of the shutter mechanism
- FIG. 8B is a plan view.
- FIG. 9A is a rear view when the shutter of the shutter mechanism is closed, and FIG. 9B is a sectional view of the spring and the arm cut along the line E-E '.
- FIG. 10A is a rear view of the shutter mechanism while the shutter is sliding, and FIG. 10B is a cross-sectional view of the spring and arm cut along the line E-E '.
- 11A is a rear view when the shutter of the shutter mechanism is opened, and FIG. 11B is a cross-sectional view of the spring and the arm cut along the line E-E ′.
- FIG. 10A is a rear view when the shutter of the shutter mechanism is closed
- FIG. 11B is a cross-sectional view of the spring and the arm cut along the line E-E ′.
- FIG. 9B is a reference example for helping understanding of the shutter mechanism according to the first embodiment, and is a cross-sectional view of a wall portion and a spring formed on the arm cut along the line E-E ′ of FIG. 9A.
- FIG. 13A is a rear view of an arm
- FIG. 13B is a plan view of a modification of the shutter mechanism according to Embodiment 1.
- FIG. 13A is a rear view of an arm
- FIG. 13B is a plan view of a modification of the shutter mechanism according to Embodiment 1.
- FIG. 1 is a front view when a shutter 2 of a media playback apparatus 10 provided with a shutter mechanism 1 according to Embodiment 1 of the present invention is closed.
- FIG. 2 is a front view when the shutter 2 of the shutter mechanism 1 is opened.
- FIG. 3 is a rear view when the shutter 2 of the shutter mechanism 1 is closed.
- the panel 3 on the front surface of the media reproducing apparatus 10 is provided with an insertion slot 31 for inserting and removing a medium such as a CD and two guide grooves 32 extending in the direction in which the shutter 2 slides.
- the insertion port 31 in the illustrated example is an opening for inserting / removing a CD, but is not limited to this, and may be, for example, a connector for inserting / removing a USB (Universal Serial Bus) memory.
- a shutter 2 is provided on the outside of the panel 3 in order to prevent foreign matter from entering the media player 10 from the opening or to protect the connector.
- the shutter mechanism 1 may be applied to any device.
- FIG. 4 is an external perspective view of the shutter mechanism 1 as seen from the back side, and shows a state where the shutter 2 is closed.
- FIG. 5 is an exploded perspective view of the shutter mechanism 1 as viewed from the back side. On the back side of the panel 3, there is a playback unit that reads and plays back data stored in the medium, but the illustration is omitted.
- the shutter mechanism 1 includes a shutter 2, a base 4, arms 5 and 6, and a spring 7.
- the arms 5 and 6 and the spring 7 constitute a link mechanism that slides and holds the shutter 2 in two positions, an open position and a closed position.
- FIG. 6 shows an external perspective view in which the shaft 8 provided on the back side of the shutter 2 is enlarged.
- the shaft 8 is formed with a cylindrical portion 81, an intermediate diameter portion 82, a small diameter portion 83, and a distal end portion 84 from the root side toward the distal end side.
- the cylindrical portion 81 has a slightly smaller diameter than the width of the guide groove 32.
- the medium diameter portion 82 has a smaller diameter than the cylindrical portion 81.
- the small diameter portion 83 has a smaller diameter than the medium diameter portion 82.
- the distal end portion 84 has the same diameter as the cylindrical portion 81.
- the cylindrical portions 81 of the two shafts 8 engage with the two guide grooves 32 of the shutter 2 and slide in the guide grooves 32, so that the shutter 2 slides in the same manner as the guide grooves 32 with respect to the panel 3. Can slide in the direction. Further, when the cylindrical portion 81 abuts both ends of the guide groove 32 in the sliding direction, the shutter 2 is positioned at the open position and the closed position.
- a sheet metal base 4 is attached to the back side of the panel 3 by two screws 9.
- the base 4 is provided with two base grooves 41 that engage with the two shafts 8.
- the base groove 41 includes a slide part 45 and a large diameter part 46.
- the slide portion 45 is formed at a position facing the guide groove 32 and has a shape extending in the slide direction of the shutter 2.
- the width of the slide portion 45 is wider than the diameter of the medium diameter portion 82 of the shaft 8 and the diameter of the cylindrical portion 81. Narrower than.
- the large diameter portion 46 extends from the end portion of the slide portion 45 in a direction orthogonal to the slide direction of the shutter 2, and has a larger diameter than the diameter of the tip portion 84 of the shaft 8.
- the base 4 includes a rotation shaft convex portion 42 that serves as a rotation center axis of the arm 5, a guide convex portion 43 that serves as a guide for the rotation of the arm 6 and movement in the perspective direction described later, and a cam groove 61 of the arm 6.
- the cam convex portion 44 that engages with is formed by drawing.
- the base 4 is provided with an arc groove 47 centered on the rotating shaft convex portion 42.
- FIG. 7A is a rear view of the arm 5, and FIG. 7B is a plan view of the arm 5.
- the arm 5 is formed of a resin such as polycarbonate (PC) or polyoxymethylene (POM), and includes a rotation shaft hole 51, a shaft engagement hole 52, a spring hook 53, an arm engagement hole 54, a hook portion 55, and Protrusions 56a and 56b are formed.
- the rotation shaft hole 51 engages with the rotation shaft convex portion 42 of the base 4.
- the shaft engaging hole 52 is formed at one end of the arm 5, has a keyhole shape including a square hole portion 52 a and a round hole portion 52 b, and engages with the shaft 8.
- the width of the square hole portion 52 a is wider than the diameter of the small diameter portion 83 of the shaft 8 and narrower than the diameter of the medium diameter portion 82.
- the round hole portion 52 b has a larger diameter than the diameter of the tip end portion 84 of the shaft 8.
- the spring hook 53 is provided between the rotary shaft hole 51 and the shaft engagement hole 52 on the back side of the arm 5 and hooks and fixes one end of the spring 7.
- the arm engagement hole 54 is a long hole formed in the other end portion of the arm 5 opposite to the shaft engagement hole 52 and is long in the perspective direction where the arm 5 and the arm 6 approach or move away from each other. Engages with the convex portion 65.
- the hook portion 55 has elasticity, is formed on the front side of the arm 5, that is, on the base 4 side, and engages with the arc groove 47. In the example of illustration, the hook part 55 is made elastic by making it snap fit.
- the protruding portion 56a is formed on the back surface of the arm 5 and at a position that overlaps the spring 7 when the shutter 2 is in the closed position.
- the projecting portion 56 a sinks under the spring 7, that is, between the spring 7 and the back surface of the arm 5, and lifts the spring 7 toward the reproducing unit that moves away from the shutter 2.
- the protruding portion 56b is formed on the back surface of the arm 5 and at a position that overlaps the spring 7 when the shutter 2 is in the open position. When the shutter 2 is in the open position, the protruding portion 56b sinks under the spring 7 and lifts it up to the reproducing portion side.
- tapered portions 57a and 57b that gradually increase in height protruding from the back surface of the arm 5 may be formed on the center-side surfaces of the protruding portions 56a and 56b.
- the tapered portion 57a abuts on the spring 7 that moves as the shutter 2 slides from the open position to the closed position, and serves as a guide when the spring 7 climbs to the apex of the protruding portion 56a.
- the tapered portion 57b abuts on the spring 7 that moves as the shutter 2 slides from the closed position to the open position, and serves as a guide when the spring 7 climbs to the apex of the protruding portion 56b.
- FIG. 8A is a rear view of the arm 6, and FIG. 8B is a plan view of the arm 6.
- the arm 6 is also resin-molded in the same manner as the arm 5, and is formed with a cam groove 61, an engagement hole 62, a shaft engagement hole 63, a spring hook 64, and a convex portion 65.
- the cam groove 61 has a curved shape in which a protruding portion 61 a protruding in a direction substantially orthogonal to the sliding direction of the shutter 2 is formed, and engages with the cam convex portion 44 of the base 4.
- the engagement hole 62 is a long hole extending in the perspective direction in which the arm 5 and the arm 6 approach or move away from each other, and engages with the guide convex portion 43 of the base 4 to guide the rotation of the arm 6 and the movement in the perspective direction. It becomes.
- the shaft engaging hole 63 is formed at one end portion of the arm 6 and has a keyhole shape including a square hole portion 63 a and a round hole portion 63 b and engages with the shaft 8.
- the width of the square hole portion 63 a is wider than the diameter of the small diameter portion 83 of the shaft 8 and narrower than the medium diameter portion 82.
- the round hole portion 63 b has a larger diameter than the diameter of the tip end portion 84 of the shaft 8.
- the spring hook 64 is provided between the engagement hole 62 and the shaft engagement hole 63 on the back side of the arm 6 and hooks and fixes the other end of the spring 7.
- the protrusion 65 is formed at the other end of the arm 6 opposite to the shaft engagement hole 63 and engages with the arm engagement hole 54 of the arm 5.
- the spring 7 is a tension spring, and has one end attached to the spring hook 53 of the arm 5 and the other end attached to the spring hook 64 of the arm 6.
- the spring 7 exerts a force in the direction of pulling the arms 5 and 6 on each other.
- the shafts 8 fixed to the shutter 2 are inserted into the guide grooves 32 of the panel 3, respectively, and the shutter 2 is positioned at the open position. Subsequently, each shaft 8 penetrating the guide groove 32 is fitted into the large diameter portion 46 of each base groove 41 of the base 4, and the base 8 is slid in the direction A in FIG. After moving from the diameter portion 46 to the slide portion 45 of the base groove 41, the panel 3 and the base 4 are fixed by the screws 9. As a result, the shutter 2 is attached to the front side of the panel 3 and the base 4 is attached to the back side of the panel 3. In this state, the cylindrical portion 81 of the shaft 8 is engaged with the guide groove 32 of the panel 3.
- the base groove 41 of the base 4 is engaged with the medium diameter portion 82 of the shaft 8, and the base 4 is located between the cylindrical portion 81 and the tip portion 84.
- the shaft 8 is held by the base 4 in this state due to the magnitude relationship between the diameters of the cylindrical portion 81 and the tip end portion 84 and the width of the base groove 41.
- the arm 6 is attached to the base 4.
- the tip end portion 84 of the shaft 8 is inserted into the round hole portion 63b of the shaft engaging hole 63 of the arm 6, and the shaft 6 is moved to the square hole portion 63a by sliding the arm 6 in the A direction.
- the engagement hole 62 is fitted into the guide convex portion 43
- the cam groove 61 is fitted into the cam convex portion 44
- the arm 6 is attached to the base 4.
- the small diameter portion 83 of the shaft 8 is engaged with the square hole portion 63 a of the arm 6.
- the arm 5 is attached to the base 4.
- the tip end portion 84 of the shaft 8 is inserted into the round hole portion 52b of the shaft engagement hole 52 of the arm 5, and the shaft 8 is square-shaped by sliding the arm 5 in the direction opposite to the A direction. It is moved to the part 52a.
- the rotation shaft hole 51 is fitted into the rotation shaft convex portion 42
- the arm engagement hole 54 is fitted into the convex portion 65
- the hook portion 55 having a snap fit shape is fitted into the arc groove 47
- the arm 5 is It will be in the state attached to the base 4.
- FIG. In this state the small diameter portion 83 of the shaft 8 is engaged with the square hole portion 52 a of the arm 5.
- the spring 7 is attached to the spring hook 53 of the arm 5 and the spring hook 64 of the arm 6 to complete the assembly of the shutter mechanism 1.
- the small diameter portion 83 of the shaft 8 is fitted in the shaft engaging holes 52 and 63, and the tip portion 84 having a larger diameter than the small diameter portion 83 is formed around the shaft engaging holes 52 and 63. Abuts to suppress floating. Further, since the arm 5 is attached so as to cover the arm 6, the arm 5 prevents the arm 6 from floating. Further, the arm 5 is attached to the base 4 by engaging a snap-fit hook portion 55 with the arc groove 47. Therefore, it is possible to provide the shutter mechanism 1 that does not require a fastening member and is excellent in assemblability.
- FIG. 9A is a rear view when the shutter 2 of the shutter mechanism 1 is closed
- FIG. 9B is a cross-sectional view of the spring 7 and the arm 5 cut along the line EE ′, and the broken line is when the spring 7 varies.
- Position. 10A is a rear view of the shutter mechanism 1 while the shutter 2 is sliding between the open position and the closed position
- FIG. 10B is a cross-sectional view of the spring 7 and the arm 5 cut along the line EE ′.
- FIG. 11A is a rear view when the shutter 2 of the shutter mechanism 1 is opened
- FIG. 11B is a cross-sectional view of the spring 7 and the arm 5 cut along the line EE ′
- the broken line is when the spring 7 varies.
- Position. 9 to 11 the illustration of the panel 3 is omitted.
- the spring hooks 53 and 64 are provided on the outer side of the arms 5 and 6 as much as possible and on the back surface of the arms 5 and 6 not on the side near the shutter 2 but on the side far from the shutter 2.
- the arms 5 and 6 are easily lifted to the reproducing unit side by the pulling force of the spring 7, and the shutter 2 is pressed against the panel 3. Therefore, rattling of the shutter 2 is suppressed, and generation of abnormal noise due to a rattling sound between the shutter 2 and the panel 3 due to vibration or the like is suppressed.
- the outer side of the arm 5 as far as possible is a position closer to the shaft 8 that engages with the shaft engagement hole 52 than the rotation shaft hole 51. Further, the outermost side of the arm 6 is a position closer to the shaft 8 that engages with the shaft engagement hole 63 than the engagement hole 62.
- the protruding portion 56a of the arm 5 sinks under the spring 7 and lifts it toward the reproducing portion, so that the spring 7 extends. Therefore, even if the shutter 2 closes vigorously and the shaft 8 collides with the end of the guide groove 32 vigorously, the natural vibration of the spring 7 is suppressed and the generation of abnormal noise is suppressed. Moreover, since the force which presses the shutter 2 against the panel 3 becomes strong, the rattling of the shutter 2 is suppressed, and the generation of abnormal noise due to the beating sound between the shutter 2 and the panel 3 is suppressed.
- the user slides the shutter 2 in a direction to open it against the urging force acting on the shutter 2.
- a force for the user to slide the shutter 2 acts on the arms 5 and 6 through the shafts 8, and the arm 5 in the state of FIG. 9A rotates in the ⁇ B direction with the rotation shaft hole 51 as a fulcrum.
- the arm 6 rotates in the ⁇ C direction with the engagement hole 62 as a fulcrum.
- the cam groove 61 serves as a cam that urges the arm 6 and the arm 5 in which the arm 6 and the other end are engaged with each other in the closing direction. A strong force is generated to hold the shutter 2 in the closed position.
- the cam projection 44 when the cam projection 44 gets over the projection 61a, the cam projection 44 rapidly slides down the projection 61a due to the reaction force of the spring 7 to move from the state shown in FIG. 10B to the state shown in FIG. 11B. While moving in the cam groove 61. Therefore, the arm 6 rapidly rotates in the ⁇ C direction with the engagement hole 62 as a fulcrum. Since the arm 5 and the arm 6 are linked by the engagement of the arm engagement hole 54 and the convex portion 65, the movement is substantially axisymmetric. Therefore, in accordance with the rapid rotation of the arm 6 in the ⁇ C direction, the arm 5 also rapidly rotates in the ⁇ B direction with the rotation shaft hole 51 as a fulcrum.
- the shaft 8 engaged with the arm 5 and the arm 6 moves in the D direction along the guide groove 32, and similarly, the shutter 2 moves in the opening direction. Thereafter, when the cylindrical portion 81 of the shaft 8 comes into contact with the end of the guide groove 32, the shutter 2 is in the open position and the insertion port 31 is opened as shown in FIGS. 2 and 11A.
- the spring 7 climbs up the tapered portion 57b of the arm 5 and rides on the protruding portion 56b. Then, when the shutter 2 is in the open position as shown in FIG. 11A, as shown in FIG. 11B, the protruding portion 56b sinks under the spring 7 and lifts it up to the reproducing portion side. Therefore, even if the shutter 2 opens vigorously and the shaft 8 collides with the end of the guide groove 32 vigorously, the natural vibration of the spring 7 is suppressed and the generation of abnormal noise is suppressed. Moreover, since the force which presses the shutter 2 against the panel 3 becomes strong, the rattling of the shutter 2 is suppressed and the generation of abnormal noise is suppressed.
- the load of the spring 7 works to pull the arm 5 and the arm 6 toward each other.
- the arm 5 is biased in the ⁇ B direction of FIG. 3 with the rotation shaft hole 51 engaged with the rotation shaft convex portion 42 as a fulcrum, and the arm 6 is engaged with the engagement hole engaged with the guide convex portion 43. It is biased in the -C direction of FIG.
- This urging force acts on each shaft 8, the cylindrical portion 81 is pressed against the end of the guide groove 32, and the shutter 2 is pressed in the opening direction.
- the cam groove 61 functions as a cam that urges the arm 6 and the arm 5 engaged with the other end of the arm 6 in the opening direction, and has a strong force to hold the shutter 2 in the open position. Arise.
- FIG. 12 shows a configuration of walls 58 a and 58 b formed on the back surface of the arm 5 as a reference example for helping understanding of the shutter mechanism 1 according to the first embodiment.
- FIG. 12 is a cross-sectional view of the walls 58a and 58b formed on the arm 5 and the spring 7 cut at a position corresponding to the line EE ′ of FIG. 9A.
- the wall portion 58 a is pressed against the side surface of the spring 7 to suppress the natural vibration of the spring 7.
- the urging force in the + B direction of the spring 7 is applied to the arm 5 to hold the shutter 2, but in the reference example of FIG.
- the spring 7 is pressed against the wall 58a.
- the direction in which the load of the spring 7 acts is changed in the ⁇ B direction, and the force for holding the shutter 2 in the closed position is weakened.
- the wall 58 b is pressed against the side surface of the spring 7 to suppress the natural vibration of the spring 7.
- the biasing force in the ⁇ B direction of the spring 7 is applied to the arm 5 to hold the shutter 2 in the open position.
- the direction in which the load of the spring 7 acts changes, and the force for holding the shutter 2 in the open position is weakened.
- the shutter mechanism 1 has a configuration in which the spring 7 is not only brought into contact with the protrusions 56a and 56b but is also lifted toward the reproducing unit, and therefore only the natural vibration of the spring 7 is suppressed. Therefore, the holding force of the shutter 2 can be increased.
- each apex of the protrusions 56a and 56b is a plane, and each plane abuts against the spring 7 when the shutter 2 is in the closed position and the open position.
- the media reproducing apparatus 10 includes the panel 3 provided with the insertion port 31 into which the media is inserted, the pair of base grooves 41, the rotating shaft convex portion 42, the guide convex portion 43, and the cam convex portion.
- the base 44 fixed to the back surface of the panel 3 and a pair of shafts 8 that engage with the pair of base grooves 41 are provided.
- the pair of shafts 8 slide in the pair of base grooves 41.
- the shutter 2 that slides to the closed position that closes the insertion port 31 and the open position that opens the insertion port 31 in the front of the panel 3, and one end of each is engaged with the pair of shafts 8 by the round holes 52 b and 63 b.
- the arm 5 has protrusions 56a and 56b that sink between the spring 7 and the arm 6 and lift the spring 7 away from the shutter 2 when the shutter 2 is in the closed position and the open position. Yes.
- the spring 7 and the projecting portions 56a and 56b are in contact with each other, even if the shutter 2 is opened and closed vigorously, the spring 7 is less likely to vibrate naturally and the generation of abnormal noise can be suppressed.
- the shutter 2 is less likely to rattle even when subjected to vibration from the outside, and abnormal noise due to the knocking sound between the shutter 2 and the panel 3 is reduced. Occurrence can be suppressed.
- the arm 5 provided with the protrusions 56a and 56b is made of resin.
- the spring 7 and the protrusions 56a and 56b are in contact with different materials such as metal and resin, and the generation of abnormal noise during contact can be suppressed.
- the protrusions 56a and 56b are formed on the arm 5, but may be formed on the other arm 6.
- FIG. 13 shows a modification in which the protrusions 66 a and 66 b are formed on the arm 6.
- FIG. 13A is a rear view of the arm 6, and
- FIG. 13B is a plan view of the arm 6.
- the protrusion 66b formed on the back surface of the arm 6 enters between the spring 7 and the back surface of the arm 6 and lifts the spring 7 away from the shutter 2.
- taper portions 67a and 67b that gradually protrude from the back surface of the arm 6 may be formed on the central surfaces of the protrusions 66a and 66b.
- the protrusions 56 a and 56 b may be formed on the arm 5, and the protrusions 66 a and 66 b may be formed on the arm 6.
- the protruding portions 56a, 56b, 66a, 66b are formed on both the arms 5, 6, even if there is a variation in parts or a variation in assembly, the spring 7 is more reliably moved away from the shutter 2. Can be lifted.
- the shutter mechanism 1 is not limited to the one applied to the media playback device 10 and can be applied to various devices that require opening and closing with a shutter.
- the shutter mechanism 1 includes at least a pair of base grooves 41, a rotation shaft convex portion 42, a guide convex portion 43, and a cam convex portion 44, and a pair of base grooves 41 engaged with the pair of base grooves 41.
- the shaft 8 is provided, and the pair of shafts 8 are engaged in the pair of base grooves 41 so that the shutter 2 slides between two positions on the base 4 corresponding to the open position and the closed position, Arms 5 and 6 engaged with one end engaged with the pair of shafts 8 so that the other ends approached and moved away from each other, and a spring 7 pulling the arms 5 and 6 together It only has to have. Then, at least one arm 5 is provided with protrusions 56a and 56b that sink between the spring 7 and the arm 5 when the shutter 2 is in two positions and lift the spring 7 away from the shutter 2.
- the configuration Also in this configuration, the spring 7 and the shutter 2 are less likely to vibrate as described above, and the generation of abnormal noise can be suppressed.
- the shutter mechanism according to the present invention suppresses vibrations of the spring and the shutter, it is suitable for use in an apparatus used in an environment where there is vibration of a vehicle or the like.
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Abstract
Description
実施の形態1.
図1は、この発明の実施の形態1に係るシャッタ機構1が設けられたメディア再生装置10のシャッタ2が閉じたときの正面図である。図2は、シャッタ機構1のシャッタ2が開いたときの正面図である。図3は、シャッタ機構1のシャッタ2が閉じたときの背面図である。
メディア再生装置10の前面のパネル3には、CDなどのメディアを出し入れする挿入口31と、シャッタ2がスライドする方向に伸びた2本のガイド溝32が設けられている。図示例の挿入口31は、CDを出し入れする開口部であるが、これに限定されるものではなく、例えばUSB(Universal Serial Bus)メモリを抜き差しするコネクタなどであってもよい。開口部からメディア再生装置10内部への異物の侵入を防止するため、またはコネクタを保護するために、パネル3の外側にシャッタ2が設けられている。
また、シャッタ機構1をメディア再生装置10に適用した例を説明するが、シャッタ機構1をどのような装置に適用してもよい。
シャッタ機構1は、シャッタ2と、ベース4と、アーム5,6と、ばね7とを備えている。アーム5,6とばね7は、シャッタ2を開位置と閉位置の2つの位置にスライドさせ保持するリンク機構を構成する。
図7Aはアーム5の背面図、図7Bはアーム5の平面図である。このアーム5は、ポリカーボネート(PC)またはポリオキシメチレン(POM)などの樹脂により成形されており、回転軸穴51、シャフト係合穴52、ばねフック53、アーム係合穴54、フック部55および突出部56a,56bが形成されている。回転軸穴51は、ベース4の回転軸凸部42と係合する。シャフト係合穴52はアーム5の一端部に形成され、角穴部52aおよび丸穴部52bから成る鍵穴形状であり、シャフト8に係合する。角穴部52aの幅は、シャフト8の小径部83の径よりも広く、中径部82の径よりも狭い。丸穴部52bは、シャフト8の先端部84の径よりも大径である。ばねフック53は、アーム5の背面側において回転軸穴51とシャフト係合穴52の間に設けられ、ばね7の一端部を引っ掛けて固定する。アーム係合穴54は、アーム5におけるシャフト係合穴52とは反対の他端部に形成された、アーム5とアーム6が近づいたり遠ざかったりする遠近方向に長い長穴であり、アーム6の凸部65と係合する。フック部55は弾性を有し、アーム5の正面側、つまりベース4側に形成されて円弧溝47に係合する。図示例では、フック部55をスナップフィット形状にすることで弾性を持たせている。
突出部56bは、アーム5の背面、かつ、シャッタ2が開位置にあるときにばね7とオーバラップする位置に、形成されている。この突出部56bは、シャッタ2が開位置にあるとき、ばね7の下に潜り込んで再生部側へ持ち上げる。
テーパ部57aは、シャッタ2の開位置から閉位置へのスライドに伴って移動するばね7に当接し、ばね7が突出部56aの頂点部へ登るときのガイドとなる。テーパ部57bは、シャッタ2の閉位置から開位置へのスライドに伴って移動するばね7に当接し、ばね7が突出部56bの頂点部へ登るときのガイドとなる。
先ず、シャッタ2に固定された各々のシャフト8が、パネル3のガイド溝32に各々挿入され、シャッタ2が開位置に位置決めされる。続いて、ガイド溝32を貫通した各々のシャフト8が、ベース4の各々のベース溝41の大径部46にはめ込まれ、ベース4が図5のA方向にスライドされることによってシャフト8が大径部46からベース溝41のスライド部45に移動された後、ねじ9によりパネル3とベース4とが固定される。これにより、パネル3の正面側にシャッタ2が取り付けられ、パネル3の背面側にベース4が取り付けられた状態になる。なお、この状態では、パネル3のガイド溝32にはシャフト8の円筒部81が係合している。また、ベース4のベース溝41は、シャフト8の中径部82に係合しており、ベース4は円筒部81と先端部84との間に位置する。円筒部81および先端部84の径と、ベース溝41の幅との大小関係により、この状態でシャフト8がベース4に保持される。
その後、ばね7がアーム5のばねフック53と、アーム6のばねフック64に取り付けられて、シャッタ機構1の組立が完成する。
これに対し、本実施の形態1では、シャフト係合穴52,63にシャフト8の小径部83がはまり込み、小径部83よりも大径の先端部84がシャフト係合穴52,63周辺に当接して浮きを抑える。また、アーム5がアーム6に被さるように重なって取り付けられているため、アーム5がアーム6の浮きを抑える。さらに、アーム5は、スナップフィット形状のフック部55が円弧溝47に係合することによってベース4に取り付けられている。従って、締結部材を必要とせず、組立性が優れたシャッタ機構1を提供することができる。
図9Aはシャッタ機構1のシャッタ2が閉じたときの背面図、図9BはE-E’線に沿って切断したばね7とアーム5の断面図であり、破線はばね7がばらついたときの位置である。図10Aはシャッタ機構1のシャッタ2が開位置と閉位置の間をスライドしている途中の背面図、図10BはE-E’線に沿って切断したばね7とアーム5の断面図である。図11Aはシャッタ機構1のシャッタ2が開いたときの背面図、図11BはE-E’線に沿って切断したばね7とアーム5の断面図であり、破線はばね7がばらついたときの位置である。なお、図9~図11ではパネル3の図示を省略している。
なお、アーム5のできるだけ外側とは、回転軸穴51よりも、シャフト係合穴52に係合するシャフト8に近い位置とする。また、アーム6のできるだけ外側とは、係合穴62よりも、シャフト係合穴63に係合するシャフト8に近い位置とする。
シャッタ2が開位置にあるときは、壁部58bをばね7の側面に押し当て、ばね7の固有振動を抑制する。シャッタ2を開位置で保持するためには、ばね7の-B方向の付勢力をアーム5に作用させシャッタ2を開位置で保持するが、図12の参考例では、ばね7が壁部58bに押し当てられることにより+B方向に押され、ばね7の荷重が作用する方向が変化し、シャッタ2を開位置で保持する力が弱まってしまう。
ばね7と突出部56a,56bとが当接することで、シャッタ2が勢いよく開閉したとしても、ばね7が固有振動しにくくなり、異音の発生を抑制することができる。また、ばね7が伸び、シャッタ2をパネル3側へ押し付ける力が強くなるので、外部から振動を受けてもシャッタ2ががたつきにくくなり、シャッタ2とパネル3とのたたき音による異音の発生を抑制することができる。
ここで、図13に、突出部66a,66bをアーム6に形成した変形例を示す。図13Aはアーム6の背面図、図13Bはアーム6の平面図である。アーム6の背面に形成された突出部66aは、シャッタ2が閉位置にあるとき、ばね7とアーム6背面との間に潜り込んで、ばね7をシャッタ2から遠ざかる方向へ持ち上げる。同じくアーム6の背面に形成された突出部66bは、シャッタ2が開位置にあるとき、ばね7とアーム6背面との間に潜り込んで、ばね7をシャッタ2から遠ざかる方向へ持ち上げる。
また、突出部66a,66bそれぞれの中心側の面に、アーム6背面から突出する高さが徐々に高くなるテーパ部67a,67bが形成されていてもよい。
例えば、シャッタ機構1は、メディア再生装置10に適用するものに限らず、シャッタによる開閉を必要とする各種装置に適用可能である。その場合、シャッタ機構1は少なくとも、一対のベース溝41、回転軸凸部42、ガイド凸部43およびカム用凸部44が設けられたベース4と、一対のベース溝41に係合する一対のシャフト8が設けられ、当該一対のシャフト8が一対のベース溝41内を係合することで、開位置および閉位置に相当するベース4上の2つの位置間をスライドするシャッタ2と、各々の一端部が一対のシャフト8に係合し、各々の他端部同士が近づいたり遠ざかったりする方向に移動可能に係合したアーム5,6と、アーム5,6を互いに引っ張り寄せるばね7とを備えていればよい。そして、少なくとも一方のアーム5には、シャッタ2が2つの位置にあるときにばね7とアーム5との間に潜り込んでばね7をシャッタ2から遠ざかる方向に持ち上げる突出部56a,56bが設けられた構成とする。この構成の場合にも、上記同様、ばね7およびシャッタ2が振動しにくくなり、異音の発生を抑制することができる。
Claims (4)
- メディアを挿入する挿入口が設けられたパネルと、
一対のベース溝、回転軸凸部、ガイド凸部およびカム用凸部が設けられ、前記パネルの背面に固定されたベースと、
前記一対のベース溝に係合する一対のシャフトが設けられ、当該一対のシャフトが前記一対のベース溝内を摺動することで、前記パネルの正面において前記挿入口を塞ぐ閉位置および前記挿入口を開放する開位置にスライドするシャッタと、
各々の一端部が前記一対のシャフトに係合し、各々の他端部同士が近づいたり遠ざかったりする方向に移動可能に係合した一対のアームと、
前記一対のアームを互いに引っ張り寄せるばねとを備え、
前記一対のアームの一方または双方は、前記シャッタが閉位置および開位置の2つの位置にあるときに前記ばねと前記アームとの間に潜り込んで前記ばねを前記シャッタから遠ざかる方向に持ち上げる一対の突出部を有していることを特徴とするメディア再生装置。 - 前記一対の突出部の、前記シャッタの閉位置および開位置へのスライドに伴って移動する前記ばねに当接する面は、前記アームから突出する高さが徐々に高くなるテーパ形状であることを特徴とする請求項1記載のメディア再生装置。
- 前記一対の突出部は、樹脂で構成されていることを特徴とする請求項1記載のメディア再生装置。
- 一対のベース溝、回転軸凸部、ガイド凸部およびカム用凸部が設けられたベースと、
前記一対のベース溝に係合する一対のシャフトが設けられ、当該一対のシャフトが前記一対のベース溝内を摺動することで、前記ベース上の2つの位置間をスライドするシャッタと、
各々の一端部が前記一対のシャフトに係合し、各々の他端部同士が近づいたり遠ざかったりする方向に移動可能に係合した一対のアームと、
前記一対のアームを互いに引っ張り寄せるばねとを備え、
前記一対のアームの一方または双方は、前記シャッタが前記2つの位置にあるときに前記ばねと前記アームとの間に潜り込んで前記ばねを前記シャッタから遠ざかる方向に持ち上げる一対の突出部を有していることを特徴とするシャッタ機構。
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JPH10247378A (ja) * | 1997-03-05 | 1998-09-14 | Alpine Electron Inc | スライド式ドア開閉機構 |
JP2005166144A (ja) * | 2003-12-01 | 2005-06-23 | Sony Corp | 再生装置 |
JP2011253581A (ja) * | 2010-06-01 | 2011-12-15 | Jvc Kenwood Corp | ドア装置および電子機器 |
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EP0992990A3 (en) * | 1998-10-08 | 2000-10-25 | Pioneer Corporation | Front-loading disc player |
JP4598063B2 (ja) | 2005-03-30 | 2010-12-15 | パイオニア株式会社 | 開閉装置及び記録媒体再生装置 |
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JPH10247378A (ja) * | 1997-03-05 | 1998-09-14 | Alpine Electron Inc | スライド式ドア開閉機構 |
JP2005166144A (ja) * | 2003-12-01 | 2005-06-23 | Sony Corp | 再生装置 |
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