WO2010079571A1 - シャフト支持構造及びそれを備えた光ディスク装置 - Google Patents
シャフト支持構造及びそれを備えた光ディスク装置 Download PDFInfo
- Publication number
- WO2010079571A1 WO2010079571A1 PCT/JP2009/007249 JP2009007249W WO2010079571A1 WO 2010079571 A1 WO2010079571 A1 WO 2010079571A1 JP 2009007249 W JP2009007249 W JP 2009007249W WO 2010079571 A1 WO2010079571 A1 WO 2010079571A1
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- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- arm
- support structure
- base
- coil spring
- Prior art date
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/0857—Arrangements for mechanically moving the whole head
- G11B7/08582—Sled-type positioners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
- F16F1/123—Attachments or mountings characterised by the ends of the spring being specially adapted, e.g. to form an eye for engagement with a radial insert
Definitions
- the present invention relates to a shaft support structure including a base provided with a bearing and a shaft disposed in the bearing of the base, and an optical disc apparatus including the same.
- one end of the shaft is inserted into a bearing hole provided in a housing. Thereby, the movement of the shaft in the radial direction is restricted.
- the shaft is provided with a restriction pin which passes through the shaft in the radial direction.
- a bracket extends from the housing along the shaft. The bracket is formed with an elongated hole extending in parallel to the radial direction of the shaft. One end of the restriction pin is inserted into the long hole of the bracket. The axial movement of the shaft is restricted by the engagement between the restriction pin and the elongated hole.
- a coil spring is penetrated to a shaft and the shaft is pressed and fixed with respect to the fixing
- the frame is formed with a fixed portion cut out in an L shape in plan view, and the shaft is disposed on the fixed portion.
- a coil spring is inserted through the shaft.
- the shaft is formed with a circumferentially extending groove, and the coil spring is fitted in the groove.
- Two arms extending from both ends of the coil spring are respectively engaged with engagement holes formed in the frame. At this time, the two arm portions are engaged with the engagement holes of the frame in a state in which the coil spring is biased in the direction to narrow the circumferential direction.
- the coil spring presses the shaft against the fixing portion of the frame.
- the movement of the shaft in the radial direction is restricted.
- the coil spring is fitted in a groove extending in the circumferential direction of the shaft, relative movement in the axial direction with respect to the shaft is restricted.
- the coil spring is fixed to the frame because it is engaged with the engagement hole of the frame as described above. That is, the axial movement of the shaft is restricted by the engagement between the coil spring and the frame and the engagement between the coil spring and the groove.
- the shaft is installed with its radial and axial movement restricted.
- its supporting structure becomes complicated.
- a restriction pin is made to penetrate the shaft, or a bracket is provided in the housing.
- channel for a coil spring to engage with the shaft is formed.
- This invention is made in view of this point, The place made into the objective is to restrict
- the present invention is directed to a shaft support structure including a base provided with a bearing and a shaft disposed in the bearing.
- the shaft support structure further includes a coil spring having a coil portion inserted into the shaft and first and second arm portions extending respectively from both end portions of the coil portion, and the base includes a coil spring
- First and second engaging portions are provided respectively engaged with the first and second arm portions, and the coil spring engages the first engaging portion of the base with the first arm portion and
- the elastic force generated by the engagement of the two arms with the second engaging portion of the base causes the shaft to be pressed against the bearing in the radial direction, and a part of the second arm is It is assumed that it is located at a position opposite to one axial end face of the shaft.
- An optical disk apparatus includes the above-described shaft support structure and an optical pickup slidably supported by the above-described shaft.
- the restriction of the radial and axial movement of the shaft can be realized with a simple configuration.
- FIG. 1 is a perspective view showing a part of a drive apparatus according to an embodiment of the present invention.
- FIG. 2 is a perspective view showing the structure of the optical disc apparatus.
- FIG. 3 is a perspective view of a plate spring.
- FIG. 4 is an enlarged perspective view around the rear end portion of the first shaft.
- FIG. 5 is an enlarged plan view of the rear end portion of the first shaft as viewed from above.
- 6 is a cross-sectional view taken along line VI-VI of FIG.
- FIG. 7 is a perspective view of a torsion coil spring.
- FIG. 8 is an enlarged perspective view around the front end portion of the first shaft.
- FIG. 9 is an enlarged perspective view of the front end portion of the first shaft as viewed from another angle.
- FIG. 10 is an enlarged perspective view showing a state in which the torsion coil spring is removed in FIG.
- FIG. 11 is an enlarged perspective view showing a state in which the torsion coil spring is removed in FIG.
- FIG. 12 is an enlarged plan view of the front end portion of the first shaft as viewed from above.
- FIG. 13 is a cross-sectional view taken along line XIII-XIII of FIG.
- FIG. 14 is a cross-sectional view corresponding to FIG. 13 showing the support structure of the front end portion of the first shaft according to another embodiment.
- FIG. 15 is a cross-sectional view corresponding to FIG. 13 showing the support structure of the front end portion of the first shaft according to another alternative embodiment.
- FIG. 1 is a perspective view showing a part of a drive apparatus 1 according to an exemplary embodiment of the present invention
- FIG. 2 is a perspective view showing a structure of an optical disc apparatus 10, which is an upper housing 11 of FIG. And a diagram showing the tray 13 removed.
- the drive device 1 includes an upper housing 11, a lower housing 12, and a tray 13.
- the upper housing 11 is attached to the lower housing 12.
- a box-like housing in which one of the side peripheral surfaces is opened is formed by the upper housing 11 and the lower housing 12.
- the tray 13 is disposed in a housing constituted by the upper housing 11 and the lower housing 12 and is configured to be able to move back and forth in and out of the housing from an opening formed on one side circumferential surface .
- the lower housing 12 is provided with an optical disk device 10.
- the side where the upper housing 11 is located is “upper”
- the side where the lower housing 12 is located is “lower”
- the direction in which the tray 13 is out of the housing ie, The opening side is referred to as “front”, and the direction in which the tray 13 enters the inside of the housing is referred to as “rear”.
- the right side when facing "front” is “right”
- the left side is “left”.
- the optical disc apparatus 10 includes a base 3, a spindle mechanism 21, an optical pickup 22, a first shaft 23, a second shaft 24, a stepping motor 25, a lead screw 26, and a screw coil spring. 4 and three leaf spring supports 5, 5,.
- the base 3 is attached to the lower housing 12 via four vibration isolation rubbers 29, 29,.
- the base 3 is composed of a base plate 30 formed of a sheet metal.
- the base plate 30 has a front short side 31, a rear short side 32, a right long side 33, and a left long side 34, and has a frame shape as a whole.
- the rear short side 32 includes a right rear short side 32a extending leftward from the rear end of the right long side 33, a left rear short side 32b extending rightward from the rear end of the left long side 34, and a right rear A central connecting portion 32c connecting the rear end edge of the short side portion 32a and the rear end edge of the left rear short side portion 32b is formed, and the center is largely cut away.
- the spindle mechanism 21 includes a spindle motor, mechanical parts, and the like, and holds an optical disc to rotate the optical disc.
- the spindle mechanism 21 is fixed to the front short side portion 31 of the base 3 by a screw.
- the first shaft 23 and the second shaft 24 are attached to the base 3 in parallel with each other and with the spindle mechanism 21 interposed therebetween. Specifically, the first shaft 23 is located on the right side of the spindle mechanism 21 while the second shaft 24 is located on the left side of the spindle mechanism 21 and both extend in the front-rear direction.
- the first shaft 23 is attached to the base 3 at a front end via a torsion coil spring 4 and at a rear end via a leaf spring support 5. Further, both ends of the second shaft 24 are attached to the base 3 via the plate spring support portions 5 and 5 respectively.
- the first shaft 23 is an example of a shaft. Details of the support structure of the first and second shafts 23 and 24 will be described later.
- the lead screw 26 is connected at its proximal end to the stepping motor 25 and is rotationally driven by the stepping motor 25.
- the stepping motor 25 is fixed to the right long side portion 33 of the base 3 in a state in which the lead screw 26 is adjacent to the first shaft 23 and in parallel to the first shaft 23. That is, the first shaft 23, the second shaft 24, and the lead screw 26 are parallel to one another.
- the tip of the lead screw 26 is rotatably supported by the right long side 33 of the base 3. A screw groove is cut in the lead screw 26.
- the optical pickup 22 has a main body 22a provided with a light source, an optical system, a sensor, and the like. At the right end of the main body 22a, first fitting portions 22b, 22b fitted to the first shaft 23 are provided. In addition, a second fitting portion 22c fitted to the second shaft 24 is provided at the left end of the main body portion 22a. Furthermore, a screwing portion 22d screwed into the screw groove of the lead screw 26 is integrally attached to the first fitting portion 22b.
- the optical pickup 22 can slide along the first and second shafts 23 and 24 by fitting the first and second fitting portions 22 b and 22 c to the first and second shafts 23 and 24, respectively. Are supported by the first and second shafts 23 and 24. In this state, the screwing portion 22 d is screwed into the lead screw 26.
- the optical pickup 22 configured in this manner moves in the axial direction of the lead screw 26 while being guided by the screw groove of the lead screw 26.
- the screwing portion 22 d moves in the axial direction of the lead screw 26
- the first fitting portions 22 b and 22 b also move in the axial direction of the lead screw 26, that is, in the axial direction of the first shaft 23.
- the optical pickup 22 moves in the axial direction of the first and second shafts 23 and 24.
- the optical pickup 22 moves in the radial direction of the optical disc held by the spindle mechanism 21.
- the optical pickup 22 reads data from an optical disk rotated by the spindle mechanism 21 or records data on the optical disk at a predetermined radial position of the optical disk.
- FIGS. 3 is a perspective view of the plate spring
- FIG. 4 is an enlarged perspective view of the rear end portion of the first shaft 23
- FIG. 5 is a top view of the rear end portion of the first shaft 23 as viewed from above
- FIG. 6 is an enlarged plan view
- FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG.
- the leaf spring support 5 has a left vertical wall 35 a and a right vertical wall 35 b provided on the base 3, a leaf spring 6 attached to the base 3, and a screw 50 screwed on the base 3. There is.
- the plate spring 6 includes a first standing wall 61, a second standing wall 62 facing the first standing wall 61 and parallel to the first standing wall 61, and a front end portion of the upper end edge of the first standing wall 61
- a connecting portion 63 connecting the front end portion of the upper end edge of the second standing wall portion 62 to the upper side of the first and second standing wall portions 61 and 62, and a rear end portion of the upper end edge of the first standing wall portion 61
- a pressing portion 64 extending obliquely upward to the portion 62 side and a regulating portion 65 extending from the rear end edge of the second standing wall portion 62 to the first standing wall portion 61 are provided.
- the plate spring 6 is formed by bending one sheet metal.
- a folded back portion 61a which is folded back inside is formed.
- a folded back portion 62a that is folded back inside is formed.
- a notch 61 b is formed in the first upright wall portion 61 between the connecting portion 63 and the pressing portion 64. As shown in FIG. 6, the pressing portion 64 is located more inward than the connecting portion 63 than the leaf spring 6.
- the right rear short side 32a of the base 3 is formed with a left vertical wall 35a and a right vertical wall 35b erected from the right rear short side 32a.
- the left vertical wall 35a and the right vertical wall 35b are provided at the left front corner of the right rear short side 32a.
- the distance between the left vertical wall 35 a and the right vertical wall 35 b is slightly larger than the outer diameter of the first shaft 23.
- an engagement hole 35c extending in the front-rear direction is formed to penetrate at the rear position of the right vertical wall portion 35b.
- a screw hole 35d is formed through the right rear short side 32a on the left side of the engagement hole 35c.
- a screw 50 is screwed into the screw hole 35d from the back side of the right rear short side portion 32a (that is, the side opposite to the side on which the spindle mechanism 21 is provided).
- the leaf spring 6 is attached to the right rear short side 32 a of the rear short side 32.
- the folded back portion 62a of the second upright wall portion 62 of the plate spring 6 is hooked on the left end edge of the right rear short side portion 32a, and the folded back portion 61a of the first upright wall portion 61 of the plate spring 6 is right shorter rear side 32a It is inserted into the engagement hole 35c and locked to the back surface of the right rear short side portion 32a.
- the rear end portion of the first shaft 23 is inserted through the space between the left vertical wall portion 35a and the right vertical wall portion 35b into the leaf spring 6.
- the first shaft 23 has room to move in the vertical direction in the leaf spring 6.
- the screw 50 is screwed into the screw hole 35 d of the right rear short side portion 32 a from the back side.
- the screw hole 35 d is located below the first shaft 23. Therefore, when the screw 50 is screwed in, the tip of the screw 50 abuts on the first shaft 23 to push the first shaft 23 upward. Eventually, the first shaft 23 abuts on the pressing portion 64 of the plate spring 6.
- the pressing portion 64 is elastically deformed to press the first shaft 23 obliquely downward to the left.
- the elastic force of the pressing portion 64 is decomposed into the leftward component and the downward component, and each presses the first shaft 23 against the left vertical wall 35 a and the screw 50.
- the rear end portion of the first shaft 23 is supported at three points of the pressing portion 64, the left vertical wall portion 35a and the screw 50, and the movement in the radial direction is restricted.
- the restricting portion 65 of the plate spring 6 is located at a position axially rearward of the rear end surface of the first shaft 23. That is, the rear end surface of the first shaft 23 faces the restricting portion 65.
- the first shaft 23 moves axially backward, the first shaft 23 abuts on the restricting portion 65, and the further backward movement in the axial direction is restricted.
- the rear end surface of the first shaft 23 and the regulating portion 65 of the plate spring 6 may be in contact from the beginning.
- the assembly order is not limited to the above-mentioned order, and as long as it can be assembled, it can be assembled in any order.
- the plate spring 6 may be attached to the right rear short side portion 32 a in a state where the rear end portion of the first shaft 23 is inserted into the plate spring 6.
- the screw 50 may be screwed to the right rear short side 32a in advance.
- FIGS. 7 to 13 are perspective views of the torsion coil spring 4
- FIG. 8 is an enlarged perspective view of the front end portion of the first shaft 23
- FIG. 9 is a view from the other angle of the front end portion of the first shaft 23.
- 10 is an enlarged perspective view showing a state in which the torsion coil spring 4 is removed in FIG. 8
- FIG. 13 is a cross-sectional view taken along the line XIII-XIII in FIG.
- the torsion coil spring 4 is made of metal. As shown in FIG. 3, the torsion coil spring 4 includes a coil portion 40 wound in a coil shape, a first arm portion 41 extending in a tangential direction of the coil portion 40 from one end of the coil portion 40, and the other coil portion 40. And a second arm portion 42 extending in the tangential direction of the coil portion 40 from the end.
- the inner diameter of the coil portion 40 is larger than the outer diameter of the first shaft 23. That is, the first shaft 23 can be inserted into the coil portion 40.
- the tip of the first arm 41 is bent in the opposite direction to the coil 40 when viewed in the axial direction of the coil 40 (see FIG. 13).
- the second arm portion 42 includes a tangential portion 43 extending in the tangential direction from the other end of the coil portion 40, an axial portion 44 bent in the axial direction of the coil portion 40 by bending from the tip of the tangential portion 43, and an axial portion When viewed from the tip of the parallel portion 45 which is bent from the tip of the tip 44 and extends parallel to the tangent portion 43 and from the tip of the parallel portion 45 and viewed in the axial direction of the coil portion 40 (see FIG. 13) And a transverse section 46 extending transversely to the reference numeral 40.
- the tangential portion 43 of the second arm portion 42 extends in the direction in which the angle formed with the first arm portion 41 is slightly larger than 90 ° when viewed in the axial direction of the coil portion 40 (see FIG. 13) ing.
- the torsion coil spring 4 is an example of a coil spring.
- a bearing 7 is provided at a position on the right side of the spindle mechanism 21.
- the bearing portion 7 is formed by bending a part of the front short side portion 31 and is substantially perpendicular to the front short side portion 31.
- the bearing 7 has a bottom wall 71 connected to the front short side 31 and parallel to the front short side 31, and a right vertical wall 72 and a left vertical wall 73 extending upward from both ends of the bottom wall 71. And. That is, the bearing portion 7 has a substantially U shape and opens upward.
- the U-shaped inner end surface of the bearing 7 functions as a bearing.
- a hook 74 extends forward.
- the tip of the bowl-shaped portion 74 is formed in a bowl shape. Specifically, after extending forward from the right vertical wall 72, the hook 74 curves upward, then curves backward, and finally curves downward. . Thus, the tip end portion of the bowl-like portion 74 is formed in a bowl-like shape that opens rearward.
- the hooked portion 74 is an example of the second engaging portion.
- a first engagement hole 36 is formed through the front short side portion 31 of the base 3 at a position on the front side of the bearing portion 7.
- the first engagement hole 36 has a substantially square shape.
- the first engagement hole 36 is an example of the first engagement portion.
- a second engagement hole 37 is formed in the front short side portion 31 at a position forward of the first engagement hole 36 and the hook-like portion 74.
- the second engagement hole 37 is an elongated hole extending in the left-right direction, that is, in the direction orthogonal to the axial direction of the first shaft 23 in a plan view.
- the front end edge of the second engagement hole 37 has a step shape so that the width of the second engagement hole 37 gradually decreases toward the left in the left-right direction.
- the front end edge of the second engagement hole 37 is at the rightmost position and extends parallel to the rear end edge (that is, in the left-right direction).
- the second engagement hole 37 is an example of a third engagement portion.
- the first shaft 23 is installed from above with respect to the bearing portion 7 so as to abut on the inner end surface thereof.
- the coil portion 40 of the torsion coil spring 4 is inserted into the front end portion of the first shaft 23 from the front.
- the coil portion 40 is inserted into the first shaft 23 with the first arm portion 41 positioned rearward and the second arm portion 42 positioned forward.
- the coil portion 40 is inserted into the first shaft 23 while the distal end portion of the first arm portion 41 is inserted into the first engagement hole 36 of the base 3.
- the tangential part 43, the axial part 44 and the parallel part 45 of the second arm 42 of the torsion coil spring 4 extend obliquely upward to the right from the first shaft 23. It is located above. Further, the distal end portion of the transverse portion 46 of the torsion coil spring 4 is inserted into the second engagement hole 37 of the base 3.
- the second arm portion 42 is pushed down to the base 3 side, and the tangential portion 43 of the second arm portion 42 is engaged with the hooked portion 74.
- the tangential portion 43 of the second arm 42 is located forward of the tip of the hooked portion 74 in the axial direction of the first shaft 23 (that is, the front-rear direction)
- the tangential portion 43 Press down diagonally backwards.
- the tangent portion 43 is moved forward to be engaged with the hook portion 74 from the rear after fully depressing.
- the first arm 41 engages with the first engagement hole 36 of the base 3 to move from the side edge of the first engagement hole 36 in the direction of the arrow A1.
- Receive power On the other hand, the second arm portion 42 engages with the hooked portion 74 and receives a force from the hooked portion 74 in the direction of the arrow A2.
- the coil portion 40 is biased to be narrowed in the winding direction, and the direction of the bisector of the angle formed by the first arm portion 41 and the second arm portion 42 (direction of arrow B)
- the first shaft 23 is pressed.
- the direction of the arrow B is directed obliquely downward to the right.
- the elastic force of the torsion coil spring 4 is decomposed into a rightward component and a downward component, and each presses the first shaft 23 against the right vertical wall 72 and the bottom wall 71 of the bearing 7.
- the front end portion of the first shaft 23 is supported at three points of the torsion coil spring 4 and the right vertical wall portion 72 and the bottom wall portion 71 of the bearing portion 7, and the movement in the radial direction is restricted.
- the left vertical wall portion 73 since the left vertical wall portion 73 is not in contact with the first shaft 23 in the supported state by the torsion coil spring 4, the left vertical wall portion 73 may be omitted. However, when the first shaft 23 is installed in the bearing portion 7, the position of the first shaft 23 is stabilized, and the assemblability is improved, so it is preferable to provide the left vertical wall portion 73.
- the crossing portion 46 of the second arm 42 moves to the left along the front end edge in the second engagement hole 37. . That is, the cross section 46 is in contact with the first parallel portion 37 a or the first inclined portion 37 b of the second engagement hole 37 in a state where the coil portion 40 is only inserted into the first shaft 23. Then, as the second arm 42 is pushed down, the cross section 46 moves to the left along the first inclined portion 37 b and the second parallel portion 37 c of the second engagement hole 37. Finally, when the second arm portion 42 engages with the hooked portion 74, the transverse portion 46 is formed by the second parallel portion 37c and the second inclined portion 37d of the second engagement hole 37. Located at the corner.
- the cross section 46 is located axially forward with respect to the front end surface (i.e., one axial end surface) of the first shaft 23. That is, the cross section 46 is located at a position facing the front end surface of the first shaft 23.
- the cross section 46 engages with the second parallel portion 37 c of the second engagement hole 37 to restrict its forward movement.
- the tangent line part 43 located in the proximal end side of the cross part 46 in the 2nd arm part 42 engages with the collar-like part 74, and the movement to the front is regulated.
- the assembling order is not limited to the above-described order, and as long as it can be assembled, it can be assembled in any order.
- the first shaft of the torsion coil spring 4 is inserted into the first engagement hole 36 of the base 3 while inserting the tip of the first arm 41 23 may be installed in the bearing portion 7.
- Either of the support structure at the front end of the first shaft 23 and the support structure at the rear end may be assembled first.
- the front end of the first shaft 23 is supported by the torsion coil spring 4 and finally the screw 50 is It may be assembled to be tightened.
- the inclination of the first shaft 23 in the pitch direction (that is, the inclination in the vertical direction) can be adjusted by the screw 50 at the rear end with reference to the bearing 7 at the front end.
- the front end portion and the rear end portion of the second shaft 24 are also supported by the plate spring support portions 5 and 5. Therefore, the inclination of the second shaft 24 in the pitch direction should be adjusted by both the screw (not shown) of the leaf spring support 5 at the front end and the screw (not shown) of the leaf spring support 5 at the rear end. Can.
- the first shaft 23 is engaged with the base 3 by engaging the first arm 41 and the second arm 42 of the torsion coil spring 4 with the coil 40 narrowed. Can be pressed and supported. Specifically, the first shaft 23 can be supported at three points of the coil portion 40 of the torsion coil spring 4 and the bottom wall 71 and the right vertical wall 72 of the bearing 7 in the base 3. Thereby, the movement of the first shaft 23 in the radial direction can be restricted. At this time, even if the first shaft 23 is moved axially forward by positioning the second arm 42 axially forward of the first shaft 23, the first shaft 23 is moved to the second arm 42. It comes to contact. Thereby, the movement of the first shaft 23 in the axial direction can be restricted.
- the tangential portion 43 is engaged with the hooked portion 74 of the base 3 so that the forward movement is restricted. That is, even if the first shaft 23 moves forward and abuts on the cross section 46 of the second arm 42, the movement of the first coil 23 is controlled because the forward movement of the torsion coil spring 4 is restricted. It can be received by the crossing section 46.
- the shaft of the first shaft 23 is Forward movement can be received by the base 3. That is, as compared with the configuration in which the cross section 46 is a free end, the axial forward movement of the first shaft 23 can be restricted by a stronger force.
- the pressing force of the torsion coil spring 4 due to the engagement of the first arm portion 41 and the second arm portion 42 with the base 3 You can tell enough to 23 That is, even if the first arm portion 41 and the second arm portion 42 are urged to narrow the coil portion 40, a large biasing force is generated in the coil portion 40 because the first arm portion 41 or the second arm portion The both ends close to 42, that is, both axial ends of the coil portion 40. Then, by making the coil portion 40 penetrate the first shaft 23, both axial ends of the coil portion 40 are wound around the first shaft 23.
- the pressing force of the torsion coil spring 4 can be efficiently transmitted to the first shaft 23 by winding the axially opposite end portions of the coil portion 40 around the first shaft 23.
- the radial movement of the first shaft 23 can be restricted by a strong force.
- the tip of the second arm 42 can be easily positioned at a position forward of the first shaft 23 in the axial direction by forming the second arm 42 in a folded shape.
- the member on the base 3 side i.e., the hook 74
- the torsion coil spring 4 is only inserted through the first shaft 23 and engaged with the base 3, the assemblability can be improved. That is, even if the torsion coil spring 4 is not attached to the first shaft 23 in advance, after the first shaft 23 is installed in the bearing portion 7, the torsion coil spring 4 is inserted into the first shaft 23. Can be assembled to the base 3 to assemble the support structure of the first shaft 23. That is, when installing the first shaft 23 in the bearing portion 7, no external force such as an elastic force acts on the first shaft 23, and the first shaft 23 can be easily installed in the bearing portion 7.
- the shaft support structure in the optical disk device 10 has been described in the above embodiment, the present invention is not limited to this.
- the shaft support structure according to the above-described embodiment may be adopted for the shaft that slidably supports the head of the printer device. That is, the shaft support structure according to the above-described embodiment can be adopted as any shaft as long as it supports a certain object.
- the base 3 is an example of a base portion supporting the first shaft 23, and is not limited to the above configuration.
- the base 3 does not have to be formed of a sheet metal, and may be formed of a block-like member.
- the rear end portion of the first shaft 23 and the both end portions of the second shaft 24 are supported by the plate spring support portions 5, 5,..., But the present invention is not limited thereto. That is, any structure can be adopted as long as the rear end portion of the first shaft 23 and the both end portions of the second shaft can be restricted from axial movement and radial movement with respect to the base 3. be able to.
- the rear end portion of the first shaft 23 and both end portions of the second shaft 24 may also be supported using a torsion coil spring 4.
- the 1st shaft 23 penetrates the coil part 40, it is not restricted to this. That is, it is not necessary for all of the coil portion 40 to be wound around the first shaft 23.
- coil part 40 is wound in multiple layers, it may be wound only once.
- coil means a shape wound at least once.
- first and second arm portions 41 and 42 extend in the tangential direction of the coil portion 40
- the present invention is not limited to this.
- the first and second arm portions 41 and 42 move away from the coil portion 40 more than the tangential direction of the coil portion 40, that is, radially outward. It may extend, or may extend to the inner peripheral side of the coil portion 40 than the tangential direction of the coil portion 40, that is, so as to cross the coil portion 40.
- the second arm 42 may extend from the end of the coil 40 so as to cross the coil 40 when viewed in the axial direction of the coil 40.
- the second arm 42 may extend radially inward from the end of the coil 40 and cross the coil 40.
- the second arm portion 42 extends radially inward from the end of the coil portion 40 and is bent approximately 90 ° in the vicinity of the axial center of the coil portion 40 so that the coil portion It may extend radially outward 40 and traverse the coil portion 40.
- the first shaft 23 does not penetrate the coil portion 40, and the axially outermost front periphery of the coil portion 40 is not wound around the first shaft 23.
- the portion of the second arm crossing the coil portion 40 is located axially forward of the first shaft 23 and faces the axial front end surface of the first shaft 23.
- the hooked portion 74 has a function of urging the second arm 42 in a direction in which the coil 40 is narrowed, and a function of restricting the forward movement of the second arm 42. Therefore, the axial direction portion 44, the parallel portion 45 and the transverse portion 46 of the second arm portion 42 and the second engagement hole 37 of the base 3 may be omitted. Even without these, since the second arm 42 is restricted from moving forward by the hook 74, even if the first shaft 23 moves forward and abuts on the second arm 42. , And further forward movement of the first shaft 23 can be restricted.
- the first engagement hole 36 of the base 3 is not limited to the shape of the hole as long as the first arm portion 41 of the torsion coil spring 4 can be biased in the direction in which the coil portion 40 is narrowed.
- the second engagement hole 37 of the base 3 is not limited to the shape of the hole as long as the forward movement of the crossing portion 46 of the second arm 42 of the torsion coil spring 4 can be restricted. Either of them may be, for example, a rib or a block standing from the base 3. These ribs and blocks are not limited to those integrally formed with the base 3, but may be formed separately from the base 3 and attached to the base 3.
- the bowl-shaped portion 74 is not limited to the above configuration. That is, the collar portion 74 does not have to be configured integrally with the bearing portion 7, and may be configured to be fixed to the base 3. That is, the collar portion 74 may be integrally formed on the base plate 30 of the base 3, or may be formed separately from the base plate 30 and attached to the base plate 30.
- the present invention is useful for a shaft support structure including a base provided with a bearing and a shaft disposed in the bearing of the base.
- optical disc apparatus 22 optical pickup 23 first shaft (shaft) 3 base 36 first engagement hole (first engagement portion) 37 Second engagement hole (third engagement part) 4 Screw coil spring (coil spring) 40 coil portion 41 first arm portion 42 second arm portion 7 bearing portion 74 collar portion (second engagement portion)
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moving Of Heads (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Springs (AREA)
Abstract
Description
図1は、本発明の例示的な実施形態に係るドライブ装置1の一部を示す斜視図であり、図2は、光ディスク装置10構造を示す斜視図であって、図1の上部筐体11及びトレイ13を取り外した状態を示す図である。
ドライブ装置1は、上部筐体11と、下部筐体12と、トレイ13とを備える。上部筐体11は、下部筐体12に取り付けられている。それにより、上部筐体11と下部筐体12とで、側周面の1つが開口する箱状の筐体が形成される。トレイ13は、上部筐体11と下部筐体12とで構成される筐体に内に配設され、1つの側周面に形成された開口から筐体の内外に進退自在に構成されている。下部筐体12には、光ディスク装置10が設けられている。
続いて、板バネ支持部5による第1シャフト23の支持構造について図3~6を参照しながら説明する。図3は、板バネの斜視図であり、図4は、第1シャフト23の後端部周辺の拡大斜視図であり、図5は、第1シャフト23の後端部周辺を上方から見た拡大平面図であり、図6は、図5のVI-VI線における断面図である。
次に、ネジリコイルバネ4による第1シャフト23の支持構造について、図7~図13を参照しながら詳しく説明する。図7は、ネジリコイルバネ4の斜視図であり、図8は、第1シャフト23の前端部周辺の拡大斜視図であり、図9は、第1シャフト23の前端部周辺を別の角度から見た拡大斜視図であり、図10は、図8においてネジリコイルバネ4を取り外した状態を示す拡大斜視図であり、図11は、図9においてネジリコイルバネ4を取り外した状態を示す拡大斜視図であり、図12は、第1シャフト23の前端部周辺を上方から見た拡大平面図であり、図13は、図12のXIII-XIII線における断面図である。
本発明は、上記実施形態について、以下のような構成としてもよい。
22 光ピックアップ
23 第1シャフト(シャフト)
3 基体
36 第1係合孔(第1係合部)
37 第2係合孔(第3係合部)
4 ネジリコイルバネ(コイルバネ)
40 コイル部
41 第1腕部
42 第2腕部
7 軸受部
74 鉤状部(第2係合部)
Claims (5)
- 軸受部が設けられた基体と、上記軸受部に配設されるシャフトとを備えたシャフト支持構造であって、
上記シャフトに挿通されるコイル部と、該コイル部の両端部からそれぞれ延びる第1及び第2腕部とを有するコイルバネをさらに備え、
上記基体には、上記コイルバネの第1及び第2腕部がそれぞれ係合する第1及び第2係合部が設けられおり、
上記コイルバネは、上記第1腕部が上記基体の第1係合部に係合し且つ上記第2腕部が上記基体の第2係合部に係合することで生じる弾性力によって、上記シャフトをその径方向へ上記軸受部に対して押圧しており、
上記第2腕部の一部は、上記シャフトの軸方向一端面と対向する位置に位置しているシャフト支持構造。 - 請求項1に記載のシャフト支持構造において、
上記第1及び第2腕部の少なくとも一方は、係合する第1又は第2係合部によって、上記コイル部が上記シャフトから抜ける方向への移動が規制されているシャフト構造。 - 請求項1又は2に記載のシャフト支持構造において、
上記基体には、上記第2腕部の先端部が係合する第3係合部が設けられており、
上記第2腕部は、上記第2係合部に係合する部分と上記第3係合部に係合する部分との間の部分が、上記シャフトの軸方向一端面と対向する位置に位置しているシャフト支持構造。 - 請求項1乃至3の何れか1つに記載のシャフト支持構造において、
上記シャフトは、上記コイルバネのコイル部を貫通しているシャフト支持構造。 - 請求項1乃至4の何れか1つに記載のシャフト支持構造と、
上記シャフトにスライド可能に支持された光ピックアップとを備えた光ディスク装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2011133046/28A RU2011133046A (ru) | 2009-01-07 | 2009-12-25 | Опорная конструкция вала и оптическое дисковое устройство, включающее указанную конструкцию |
EP09825635A EP2355100A4 (en) | 2009-01-07 | 2009-12-25 | Drive shaft support structure and optical plate device with it |
CA2744841A CA2744841A1 (en) | 2009-01-07 | 2009-12-25 | Shaft supporting structure and optical disc apparatus including the same |
JP2010518662A JP4590029B2 (ja) | 2009-01-07 | 2009-12-25 | シャフト支持構造及びそれを備えた光ディスク装置 |
CN200980144309.5A CN102203859B (zh) | 2009-01-07 | 2009-12-25 | 轴支承结构以及具备该轴支承结构的光盘装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009001398 | 2009-01-07 | ||
JP2009-001398 | 2009-03-10 |
Publications (1)
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WO2010079571A1 true WO2010079571A1 (ja) | 2010-07-15 |
Family
ID=42316349
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2009/007249 WO2010079571A1 (ja) | 2009-01-07 | 2009-12-25 | シャフト支持構造及びそれを備えた光ディスク装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8316388B2 (ja) |
EP (1) | EP2355100A4 (ja) |
JP (1) | JP4590029B2 (ja) |
CN (1) | CN102203859B (ja) |
CA (1) | CA2744841A1 (ja) |
RU (1) | RU2011133046A (ja) |
WO (1) | WO2010079571A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016126807A (ja) * | 2014-12-26 | 2016-07-11 | アルパイン株式会社 | ヘッド駆動装置 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102376336A (zh) * | 2010-08-19 | 2012-03-14 | 鸿富锦精密工业(深圳)有限公司 | 光盘驱动器及其机芯模组 |
CN107988460B (zh) * | 2017-11-02 | 2021-06-08 | 中国航发哈尔滨东安发动机有限公司 | 一种碟形弹簧弹力精确控制方法 |
CN108869612B (zh) * | 2018-07-30 | 2019-06-18 | 上海大学 | 一种基于光致交联材料的阻尼器 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0229307U (ja) | 1988-08-12 | 1990-02-26 | ||
JPH06236635A (ja) | 1993-02-08 | 1994-08-23 | Seiko Epson Corp | ディスク装置のガイド軸固定構造 |
JP2002352531A (ja) * | 2001-05-24 | 2002-12-06 | Tanashin Denki Co | 光学ピックアップのガイド装置 |
JP2005050398A (ja) * | 2003-07-30 | 2005-02-24 | Sanyo Electric Co Ltd | ピックアップ傾き調整機構を具えたディスク記録又は再生装置 |
JP2008282443A (ja) * | 2007-05-08 | 2008-11-20 | Funai Electric Co Ltd | 光ディスク装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6319432A (ja) * | 1986-07-11 | 1988-01-27 | Kubota Ltd | コイルバネ |
JP2610642B2 (ja) | 1988-03-11 | 1997-05-14 | 株式会社クボタ | 繊維強化フェノール樹脂発泡体の表面凹凸模様付方法 |
USD356788S (en) | 1993-06-30 | 1995-03-28 | Sharp Kabushiki Kaisha | Cursor control for computer display |
JP2001266473A (ja) * | 2000-03-23 | 2001-09-28 | Tokyo Parts Ind Co Ltd | ディスク載置部を備えたスピンドルモータ |
CN1497572A (zh) * | 2002-10-10 | 2004-05-19 | 株式会社国广 | 光盘播放器的光盘保持装置 |
JP4124161B2 (ja) * | 2004-05-21 | 2008-07-23 | 船井電機株式会社 | ディスク装置 |
JP2006127675A (ja) * | 2004-10-29 | 2006-05-18 | Orion Denki Kk | ガイドシャフト取り付け機構を備えた記録再生装置 |
JP3889421B2 (ja) * | 2004-11-18 | 2007-03-07 | 東芝サムスン ストレージ・テクノロジー株式会社 | 光ディスク装置のシャフト支持機構及び光ディスク装置の傾き調整機構 |
JP2006302372A (ja) * | 2005-04-19 | 2006-11-02 | Funai Electric Co Ltd | 光ピックアップ装置 |
-
2009
- 2009-12-25 JP JP2010518662A patent/JP4590029B2/ja not_active Expired - Fee Related
- 2009-12-25 EP EP09825635A patent/EP2355100A4/en not_active Withdrawn
- 2009-12-25 CA CA2744841A patent/CA2744841A1/en not_active Abandoned
- 2009-12-25 WO PCT/JP2009/007249 patent/WO2010079571A1/ja active Application Filing
- 2009-12-25 CN CN200980144309.5A patent/CN102203859B/zh active Active
- 2009-12-25 RU RU2011133046/28A patent/RU2011133046A/ru unknown
- 2009-12-30 US US12/649,402 patent/US8316388B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0229307U (ja) | 1988-08-12 | 1990-02-26 | ||
JPH06236635A (ja) | 1993-02-08 | 1994-08-23 | Seiko Epson Corp | ディスク装置のガイド軸固定構造 |
JP2002352531A (ja) * | 2001-05-24 | 2002-12-06 | Tanashin Denki Co | 光学ピックアップのガイド装置 |
JP2005050398A (ja) * | 2003-07-30 | 2005-02-24 | Sanyo Electric Co Ltd | ピックアップ傾き調整機構を具えたディスク記録又は再生装置 |
JP2008282443A (ja) * | 2007-05-08 | 2008-11-20 | Funai Electric Co Ltd | 光ディスク装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2355100A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016126807A (ja) * | 2014-12-26 | 2016-07-11 | アルパイン株式会社 | ヘッド駆動装置 |
Also Published As
Publication number | Publication date |
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US8316388B2 (en) | 2012-11-20 |
CA2744841A1 (en) | 2010-07-15 |
EP2355100A1 (en) | 2011-08-10 |
RU2011133046A (ru) | 2013-02-20 |
CN102203859A (zh) | 2011-09-28 |
JP4590029B2 (ja) | 2010-12-01 |
US20100180285A1 (en) | 2010-07-15 |
JPWO2010079571A1 (ja) | 2012-06-21 |
CN102203859B (zh) | 2015-07-08 |
EP2355100A4 (en) | 2011-08-10 |
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