JP4412553B2 - Optical pickup device - Google Patents

Description

  The present invention relates to an optical pickup device that reads and / or writes information on a disk recording medium such as a CD (Compact Disk) and a DVD (Digital Versatile Disk).

Conventionally, a lens holder for fixing and supporting a pickup lens (objective lens), four conductive wires extending from the lens holder, a terminal to which each tip portion of the four conductive wires is fixed by soldering, and the An optical axis direction (focusing direction) of the pickup lens includes a printed circuit board having a relay terminal electrically connected to the terminal and the lens holder elastically supported by the four conductive wires when the conductive wires are energized. ) And an actuator (biaxial actuator) driven in the radial direction (tracking direction) of the disk recording medium has been proposed (see, for example, Patent Document 1). In such an optical pickup device, the terminal of the flexible printed circuit board is soldered and fixed to the relay terminal of the printed circuit board, and the flexible printed circuit board, the printed circuit board, and four conductive wires are connected from an external power supply unit. The actuator is energized via.
Japanese Patent Laid-Open No. 2001-23201

  By the way, in the conventional optical pickup device described above, after soldering the tip of the conductive wire to the terminal of the printed circuit board, when trying to solder the terminal of the flexible printed circuit board to the relay terminal of the printed circuit board, The heat softens the soldered portion at the tip of the conductive wire, which may cause the lens holder to be tilted or displaced. Therefore, if the terminal of the flexible printed circuit board is soldered to the relay terminal of the printed circuit board first, and then the conductive wire is soldered to the terminal of the printed circuit board, the inclination of the lens holder as described above, etc. The problem is solved. However, the flexible printed circuit board to be connected to the external power supply section tends to be relatively long, and such a relatively long flexibility before various adjustments and aging work to be performed before completion. If the printed circuit board is integrated with the lens holder and the actuator, the operation becomes difficult.

  The present invention has been made in order to solve such a conventional problem, and is a light having a structure capable of reducing the difficulty of work to be performed before completion due to the flexible printed circuit board. A pickup device is provided.

An optical pickup device according to the present invention includes a lens holder for fixing and supporting a pickup lens, a plurality of conductive wires extending from the lens holder, a terminal to which the respective tip portions of the plurality of conductive wires are fixed by soldering, and A printed circuit board having a relay terminal electrically connected to the terminal; and a drive unit that drives the lens holder elastically supported by the plurality of conductive wires in a predetermined direction by energization of the plurality of conductive wires. And a holder member that houses the pickup unit in a state where the pickup lens is exposed, and a terminal to be soldered to a relay terminal of the printed circuit board is formed. A second terminal part having a first terminal part and a terminal electrically connected to the terminal of the first terminal part A first flexible printed circuit board having an intermediate part formed integrally with the first terminal part and the second terminal part, and the first flexible printed circuit board A fixing member that is fixedly supported in the pickup unit, a first terminal portion in which a terminal connected to an external power feeding portion is formed, and a second terminal in which a terminal that is electrically connected to the terminal of the first terminal portion is formed And a second flexible printed circuit board formed on the holder member and formed on a second terminal portion of the first flexible printed circuit board, and the second flexible printed circuit board. A terminal bonding set portion for setting each second terminal portion of the first flexible printed circuit board and the second flexible printed circuit board so that a terminal formed on the second terminal portion of the first flexible printed circuit board is bonded to the second flexible printed circuit board. Having the first flexible printed circuit board and the second flexible printed circuit board. Terminals formed on the second terminal portion each gender printed circuit board are soldered, the terminal joint set portion of the holder member includes a first set of surface and a second set of surface to be joined at each edge at a predetermined angle And the surface of the second terminal portion of the first flexible printed circuit board on which the terminal is formed is in contact with the first set surface, and the second set surface of the first set surface The second terminal portion of the first flexible printed circuit board is set on the first set surface so that the terminal protrudes forward from the joint edge of the second flexible printed circuit board, and the second terminal of the second flexible printed circuit board The second terminal portion of the second flexible printed circuit board is set on the second set surface so that the surface of the portion where the terminal is not formed contacts the second set surface, and the terminal bonding The set unit further includes a contact between the first set surface and the second set surface. A lifting restraining member that is provided in front of a joint edge and that presses a surface of the second terminal portion of the first flexible printed circuit board that protrudes forward from the joint edge on which the terminal is not formed; The second terminal portion of the one flexible printed circuit board has locking recesses formed on both sides, and the second terminal portion of the second flexible printed circuit board has both sides of the leading edge. The terminal joint set portion is formed by the locking recess portion of the second terminal portion of the first flexible printed circuit board set on the first set surface. The tip position of the second terminal portion of the first flexible printed circuit board is regulated so as to be disposed between the joint edge between the first set surface and the second set surface and the floating suppression member. A second position set member on the second set surface. Configuration the locking projection of the second terminal portion of FLEXIBLE PCB has to fit in the locking recess of the second terminal portion of the first flexible printed circuit board that is set in the first set surface It becomes.

  With such a configuration, after the terminal formed on the first terminal portion of the first flexible printed board that does not need to extend to the external power feeding portion is soldered and fixed to the relay terminal of the printed board, the pickup lens is fixed. A plurality of conductive wires extending from a lens holder to be fixedly supported can be soldered and fixed to the terminals of the printed circuit board. Then, an adjustment operation, an aging operation, or the like can be performed on the pickup unit in which the lens holder, the printed circuit board, the driving unit, and the first flexible printed circuit board are integrated. After the completion of such work, the second flexible printed board in which the first terminal portion is connected to the external power feeding portion in the terminal joint set portion of the holder member that exposes the pickup lens and stores the pickup unit. The second terminal portion and the second terminal portion of the first flexible printed board are set so that the respective terminals are joined, and soldering of each terminal is performed. As a result, the drive unit of the pickup unit can be energized through the first flexible printed circuit board, the second flexible printed circuit board, the printed circuit board, and a plurality of conductive wires from the power supply unit. .

  In the optical pickup device according to the present invention, the relay terminal of the printed circuit board and the terminal formed on the first terminal portion of the first flexible printed circuit board can be joined substantially vertically. .

  With such a configuration, the relay terminal of the printed circuit board and the terminal formed on the first terminal portion of the first flexible printed circuit board are soldered and fixed in a state of being joined substantially vertically.

  In the optical pickup device according to the present invention, the fixing member may have a receiving surface that receives a part of an intermediate portion that continues from the first terminal portion of the first flexible printed board.

With such a configuration, a part of the intermediate portion continuing from the first terminal portion on which the terminal to be soldered and fixed to the relay terminal of the printed board of the first flexible printed board is formed on the receiving surface of the fixing member Since the second terminal portion to be set in the terminal joint set portion of the holder member is free from the other part of the intermediate portion that is not received by the receiving surface, the first flexible portion is received. it is possible to fix supporting sexual part print substrate at a fixed member. Thereby, the 2nd terminal part of the 1st flexible printed circuit board can be made easy to set to the terminal junction set part.

  Further, in the optical pickup device according to the present invention, the terminal non-formation surface opposite to the surface of the first terminal portion of the first flexible printed circuit board and the fixing member of the intermediate portion. It can be set as the structure which has a plate-shaped auxiliary material joined to the surface which continues from the terminal non-formation surface of the said 1st terminal part of at least one part of the contact part with the said receiving surface.

With such a structure, least a part of the contact portion between the receiving surface of the fixing member of the first terminal portion and the intermediate portion of the first flexible printed circuit board by a plate-like auxiliary material to the plate-shaped auxiliary member Therefore, the intermediate portion can be prevented from being lifted from the receiving surface of the fixing member.

  In the optical pickup device according to the present invention, the first flexible printed circuit board has two projecting portions projecting to both sides from a predetermined position not received by the receiving surface of the intermediate portion. The fixing member may include a locking portion that locks each of the two protruding portions protruding from the intermediate portion of the first flexible printed board.

  With this configuration, the predetermined position of the intermediate portion that is not received by the receiving surface of the fixing member of the first flexible printed circuit board is locked to the fixing member, so that the first flexibility It is possible to prevent the intermediate portion of the printed circuit board from being lifted from the receiving surface of the fixing member.

  Furthermore, in the optical pickup device according to the present invention, the locking portion may be formed on the fixing member with a step from the receiving surface on a side opposite to the direction in which the receiving surface faces.

  With this configuration, the intermediate portion that is not received by the receiving surface of the fixing member of the first flexible printed circuit board extends with a step on the opposite side to the direction in which the receiving surface faces. A part of is more closely attached to the receiving surface, and can be prevented more reliably.

In the optical pickup device according to the present invention, the first set surface and the second set surface of the terminal joining set portion of the holder member are joined at their respective edges at a predetermined angle. By setting the second terminal portion of the flexible printed circuit board on the first set surface and setting the second terminal portion of the second flexible printed circuit board on the second set surface, the joint edge of each set surface is moved forward. The terminal formed on the second terminal portion of the first flexible printed circuit board and the terminal formed on the second terminal section of the second flexible printed circuit board can be joined at the predetermined angle. become.

  In the optical pickup device according to the present invention, the first set surface and the second set surface may be joined substantially vertically.

  With such a configuration, the terminal formed on the second terminal portion of the first flexible printed circuit board that protrudes forward from the joint edge of each set surface and the second terminal section of the second flexible printed circuit board. The formed terminals can be joined substantially vertically.

In the optical pickup device according to the present invention, the first flexible printed circuit board set on the first set surface protrudes forward from the joint edge between the first set surface and the second set surface of the second terminal portion. Since the floating of the portion is suppressed, the second terminal portion of the first flexible printed board can be more reliably set on the first set surface.

In the optical pickup device according to the present invention, the second terminal portion of the first flexible printed board is connected to the second terminal portion of the terminal joint set portion in a state where the tip of the second terminal portion is restricted by the tip position restricting portion. When set on one set surface, the locking recess of the second terminal portion is disposed between the joint edge between the first set surface and the second set surface and the lifting restraining member located in front of the joint edge. The second terminal portion of the second flexible printed circuit board is set in the second set while the engaging protrusion of the second terminal portion of the second flexible printed circuit board is easily fitted in the engaging recess. It can be set on the surface. And since the said latching protrusion part comes to fit in the said latching recessed part, the 2nd terminal part of the said 1st flexible printed circuit board and the 2nd terminal part of the said 2nd flexible printed circuit board, Can be set so that the respective terminals are securely joined.

  Furthermore, in the optical pickup device according to the present invention, a protrusion is formed on the second set surface, and a locking hole is formed in the second terminal portion of the second flexible printed circuit board. The 2nd terminal part of a flexible printed circuit board can be set as the structure set to the said 2nd set surface so that the said protrusion may fit in the said locking hole.

  With such a configuration, a protrusion is formed on the second set surface of the terminal joint set portion of the holder member, and a locking hole into which the protrusion is fitted is formed in the second terminal portion of the second flexible printed board. Therefore, the second terminal portion of the second flexible printed board can be reliably and easily set on the set surface.

  The optical pickup device according to the present invention includes a lens holder that fixes and supports the pickup lens, a printed board on which a plurality of conductive wires extending from the lens holder are soldered, and a drive unit that is energized through the conductive wire. In the pickup unit, the first flexible printed board that can be shortened as much as possible without being extended to the external power feeding portion is soldered to the printed board. When working, the first flexible printed circuit board becomes less disturbing. Therefore, it is possible to reduce the difficulty of various operations to be performed on the pickup unit before completion.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The pickup unit in the optical pickup device according to the embodiment of the present invention is assembled as shown in FIGS. 1 is a perspective view showing a printed circuit board (a), a plan view (b) showing a sub-flexible printed circuit board (first flexible printed circuit board: hereinafter referred to as sub-FPC), and the printed circuit board and sub-FPC. FIG. 2 is a perspective view showing a joined state between the relay terminal formed on the printed circuit board and the terminal formed on the first terminal portion of the sub-FPC, and FIG. FIG. 4 is a perspective view showing a state in which the sub FPC bonded to the substrate is further supported and fixed to the fixing member, and FIG. 4 is an enlarged perspective view showing the fixing structure of the sub FPC at the end of the fixing member. FIG. 5 is a perspective view showing an enlarged FPC reinforcing structure, FIG. 5 is a perspective view showing a bonding state between a conductive wire extending from a lens holder for housing a pickup lens and a printed board, and FIG. Been formed FIG. 7 is an enlarged perspective view showing a state in which the connection terminal and the terminal joined to the first terminal portion of the sub-FPC are soldered and the conductive wire is soldered to the terminal of the printed circuit board. It is a perspective view which shows the pick-up unit in the optical pick-up apparatus which concerns on one Embodiment of invention.

  In FIG. 1 (a), two terminals 11a and 11b and terminals 11c and 11d arranged on the upper and lower sides are formed on both ends of the printed circuit board 10, respectively. Each of the terminals 11a, 11b, 11c, and 11d has a hole into which a conductive wire described later is inserted. In addition, four relay terminals 12a, 12b, 12c, and 12d are arranged in an approximately central portion of the printed circuit board 10. The leading ends of the relay terminals 12a and 12d located at both ends of the four relay terminals protrude from the upper edge of the printed circuit board 10, and the relay terminals 12b and 12c located between the relay terminals 12a and 12d. The leading end of the printed circuit board 10 reaches the upper edge. Each terminal 11a, 11b, 11c, 11d in which the hole into which the conductive wire is to be inserted is formed and each relay terminal 12a, 12b, 12c, 12b are connected by printed wiring (not shown) or thin. It is integrally formed from a conductive metal plate, and each terminal and the corresponding relay terminal are in electrical conduction.

  In FIG. 1B, the sub-FPC 20 has a first terminal portion 20a located at one end thereof, a second terminal portion 20d located at the other end portion, a first terminal portion 20a and a second terminal portion. The first intermediate portion 20b and the second intermediate portion 20c formed integrally therewith between 20d. Four terminals 21 a, 21 b, 21 c, 21 d extending in the lateral direction of the sub FPC 20 are arranged in the first terminal portion 20 a, and four terminals 22 a, 22 b, extending in the longitudinal direction of the sub FPC 20 are formed in the second terminal portion 20 d. 22c and 22d are arranged. The terminals 21a, 21b, 21c, 21d formed on the first terminal portion 20a and the terminals 22a, 22b, 22c, 22d formed on the second terminal portion 20d are connected by printed wiring (not shown). They are in an electrically conductive state. Two lateral projecting portions 23a and 23b projecting on both sides are formed at the boundary portion between the first intermediate portion 20b and the second intermediate portion 20c. Fin portions 24a and 24b projecting on both sides of the sub-FPC 20 are formed at the boundary between the second terminal portion 20d and the second intermediate portion 20c, and the terminals 22a, 22b, 22c and 22d of the second terminal portion 20d are formed. At both end portions of the tip edge of the formed portion, tip projecting portions 25a and 25b projecting from the tip edge are formed. Clearances as locking recesses 26a and 26b are formed between both side portions of the portion of the second terminal portion 20d where the terminals 22a to 22d are formed and the fin portions 24a and 24b.

  In FIG.1 (c), the terminal non-formation surface on the opposite side to the surface in which the terminals 21a-21d of the 1st terminal part 20a of the sub FPC20 were formed, and the terminal of some 1st terminal parts 20a of the 1st intermediate part 20b A plate-like auxiliary material 28 made of, for example, polyimide resin is joined to the surface continuing from the non-formed surface, and is fixed by adhesion or the like. Holes 28a and 28b are formed in the plate-like auxiliary material 28. As shown in FIG. 2, these holes 28a and 28b are terminals 21a located at both ends of the four terminals 21a to 21d of the first terminal portion 20a. , 21d is aligned with the through-hole formed in 21d.

  The first terminal portion 20a of the sub-FPC 20 is joined substantially perpendicularly to the portion where the relay terminals 12a to 12d of the printed circuit board 10 are formed, and as shown in FIG. 2 (see also FIG. 4B described later), the printed circuit board The tip ends of the relay terminals 12a and 12d located at both ends of the four relay terminals 12a to 12d are the through holes of the terminals 21a and 22d of the first terminal portion 20a (sub FPC 20) and the holes 28a of the plate-like auxiliary material 28, 28b. As a result, the relay terminals 12a to 12d of the printed circuit board 10 are joined substantially vertically to the terminals 12a to 12d of the first terminal portion 20a (sub FPC 20).

  As shown in FIG. 3, the fixing member 30 is arranged substantially parallel to the printed circuit board 10, and protruding portions 35 a (35 b: not shown in FIG. 3) at both ends of the surface of the fixing member 30 facing the printed circuit board 10. 6) and a mounting portion 36 are formed between the projecting portions 35a (35b). Then, the printed circuit board 10 is fixed to the attachment portion 36 by adhesion or the like. In this state, a slight gap is formed between the protruding portion 35a (35b) of the fixing member 30 and the printed board 10, and both end portions of the printed board 10 can be bent within the gap. A through hole 34 a is formed in a portion of the fixing member 30 facing the terminal 11 a of the printed circuit board 10, and a through hole 34 c is formed in a portion of the fixing member 30 facing the terminal 11 c of the printed circuit board 10. Although not shown, a through hole is formed in the protruding portion 35a so as to face the terminal 11b of the printed circuit board 10, and the protruding portion (35b) on the opposite side faces the terminal 11d of the printed circuit board 10. A through hole is formed as described above.

  The fixing member 30 receives a portion of the receiving surface 30a where the plate-like auxiliary material 28 of the first intermediate portion 20b continuing from the first terminal portion 20a of the sub FPC 20 is joined. An extension protrusion 31 having a predetermined width is formed at one end of the fixing member 30 and continues from the surface facing the printed circuit board 10, and the predetermined width is extended from the surface opposite to the surface facing the printed circuit board 10. A protruding portion 32 is formed. As a result, a space 33 is formed between the extended protrusions 31 and 32. As shown in more detail in FIG. 4A, the extended protrusions 31 and 32 have recesses 31a and 32a (locking portions) that open in the direction opposite to the direction of the receiving surface 30a (upward in the drawing). A step is formed from the receiving surface 30a on the opposite side to the direction of 30a. Then, the first intermediate portion 20b of the sub FPC 20 is drawn into the space 33 between the extension protrusions 31 and 32, and the side protrusions 23a and 23b are hooked and locked in the recesses 31a and 32a.

  In such a joining structure of the printed circuit board 10, the sub-FPC 20, and the fixing member 30, as shown in detail in FIG. 4B, the relay terminals 12a and 12d of the printed circuit board 10 are fitted and positioned in the holes 28a and 28b. Since the plate-shaped auxiliary material 28 backs the first terminal portion 20a of the sub FPC 20 and a part of the first intermediate portion 20b that follows the first terminal portion 20a, Lifting is prevented. Further, the side protrusions 23a and 23b of the sub FPC 20 are received by the receiving surface 30a of the fixing member 30 of the first intermediate portion 20b by being hooked and locked to the recesses 31a and 32a of the extension protrusions 31 and 32. Since the non-exposed portion is drawn into the space 33 between the extended projecting portions 31 and 32 with a step on the opposite side to the direction in which the receiving surface 30a faces (see FIG. 4A), the sub FPC 20 backed by the plate-like auxiliary material 28 The first intermediate portion 20b comes into close contact with the receiving surface 30a, and the lifting is more reliably prevented. And the 2nd intermediate part 20c following the 2nd terminal part 20d from the side protrusion parts 23a and 23b of the sub FPC20 will be in the slackened state, and the 2nd terminal part 20d will be in a free state.

  In FIG. 5, a pickup lens 45 is positioned and fixedly supported by support portions 41a, 41b, 42a, and 42b protruding inward of a lens holder 40 that is a frame-like body. The lens holder 40 is wound with two coils, a focusing coil and a tracking coil (not shown). Further, terminal rods 43a, 43b, 43c (43d: not shown in FIG. 5 (see FIG. 6 described later)) connected to both ends of each of the coils are provided so as to protrude from the lens holder 40. .

  The lens holder 40 that fixes and supports the pickup lens 45 is disposed on the opposite side of the printed circuit board 10 with the fixing member 30 interposed therebetween, and the conductive wire 44a having one end soldered and fixed to the terminal rod 43a is fixed to the fixing member 30. The conductive wire 44c that penetrates the through hole 34a and the terminal 11a of the printed board 10 and has one end soldered to the terminal rod 43c is fixed to the through hole 34c of the fixing member 30 and the terminal of the printed board 10 It penetrates the hole formed in 11c. Further, the conductive wires 44b and 44d having one end soldered and fixed to each of the terminal bar 43b and the terminal bar (43d) not shown are also protruding portions 35a and (35b: FIG. 5) of the fixing member 30. And the holes formed in the terminals 11b and 11d of the printed circuit board 10. Note that the through holes formed in the fixing member 30 are filled with the gel-like damper material after the conductive wires 44a to 44d are inserted, thereby causing undesired vibrations of the conductive wires 44a to 44d. Is suppressed.

  In this state, as shown in FIG. 6, the terminals 21a, 21b, 21b, 12b, 12c, 12d of the printed circuit board 10 and the terminals 21a, 21b formed on the first terminal portion 20a of the sub-FPC 20 joined substantially perpendicularly thereto. Solder lump 51a, 51b, 51c, 51d is piled up between 21c, 21d, and terminal 21a, 21b, 21c, 21d corresponding to each relay terminal 12a, 12b, 12c, 12d is fixed by soldering. At the time of this soldering, the relay terminals 12a, 12b, 12c, and 12d and the terminals 21a, 21b, 21c, and 21d are in a state of being joined substantially vertically, so that the solder masses 51a, 51b, 51c, and 51d are joined to the joints. Thus, the bonding strength between the relay terminals 12a to 12d and the terminals 21a to 21d is increased. Thereafter, solder lumps 52a, 52b, 52c, 52d are stacked on the terminals 11a, 11b, 11c, 11d of the printed circuit board 10 through which the conductive wires 44a, 44b, 44c, 44d penetrate, and the conductive wires 44a, 44b, 44c, 44d and corresponding terminals 11a, 11b, 11c, 11d of the printed circuit board 10 are fixed by soldering. As described above, the conductive wires 44a, 44b, 44c, and 44d are soldered and fixed to the terminals 11a, 11b, 11c, and 11d of the printed circuit board 10, so that the lens holder 40 has four conductive wires 44a, 44b, 44c and 44d are elastically supported.

  As described above, after the relay terminals 12a to 12d of the printed circuit board 10 and the terminals 21a to 21d formed on the first terminal portion 20a of the sub-FPC 20 are soldered, the terminals 11a to 11d of the printed circuit board 10 are used. And the conductive wires 44a to 44d are soldered, so that the lens holder 40 elastically supported by the four conductive wires 44a to 44d is not tilted or misaligned during the soldering operation.

  Next, the printed circuit board 10, the sub FPC 20, the fixing member 30, and the lens holder 40 (see FIGS. 5 and 6) integrated as described above are accommodated in a metal chassis 60 as shown in FIG. The pickup unit 70 is configured as a whole. Both ends of the fixing member 30 are fixed to both side bottoms 65 and 66 of the chassis 60 by adhesion or the like, and the lens holder 40 is maintained elastically supported by the four conductive wires 44a, 44b, 44c and 44d. It is stored in the chassis 60. The chassis 60 is disposed so as to sandwich the lens holder 40 and has two upright plates 61 and 62 facing each other, and magnets 63 and 64 are fixed to the facing surfaces of the upright plates 61 and 62, respectively. A drive unit is configured by a chassis 60 (made of metal) including the upright plates 61 and 62, a magnetic circuit formed by the magnets 63 and 64, and a tracking coil and a focusing coil wound around the lens holder 40. The drive unit energizes the tracking coil and the focusing coil through the conductive wires 44 a, 44 b, 44 c, and 44 d to cause the lens holder 40 elastically supported by the conductive wires 44 a to 44 d to move in the optical axis direction of the pickup lens 45. The lens holder 40 is driven in the radial direction (tracking direction T) of the disc recording medium (CD, MD, etc.) facing the (focusing direction F) and the pickup lens 45 (biaxial actuator).

  Brackets 67a, 67b, and 67c are formed at three corners except the corner where the second terminal portion 20d of the sub FPC 20 of the chassis 60 is disposed. Holes are formed in the brackets 67a and 67c located on the diagonal line passing through the lens holder 40, and a hemispherical recess is formed in the other bracket 67b, for example.

  From the pickup unit 70 having the structure described above, the second intermediate portion 20c of the sub FPC 20 protrudes in a slack state, and the second terminal portion 20d protrudes in a free state. Then, by connecting the terminals 22a to 22d (see FIG. 1B) formed on the second terminal portion 20d to, for example, the power supply terminal of the inspection device, the sub FPC 20, the printed circuit board 10, and the conductive wires 44a to 44d are passed through. The tracking coil and the focusing coil in the lens holder 40 are energized, so that the pickup unit 70 can be electrically inspected and aged. Further, a mechanical adjustment operation for the pickup unit 70 can also be performed. Since the sub FPC 20 protrudes only partially (second intermediate portion 20c, second terminal portion 20d) from the pickup unit 70, the sub FPC 20 is not obstructed and can easily perform these operations. It becomes like this.

  The optical pickup device according to the embodiment of the present invention including the pickup unit 70 described above is assembled as shown in FIGS. 8 is a perspective view showing a state in which the pickup unit is housed in the holder member, FIG. 9 is a perspective view showing a structure of the terminal joint set portion of the holder member on the inner side of the holder member, and FIG. The perspective view which shows the structure of the holder member outer side of the terminal junction set part in a member, FIG. 11 is the perspective view which looked at the state which set the 2nd terminal part of sub FPC in the terminal junction set part from the holder member inner side, FIG. 12 is a perspective view of a state in which the second terminal portion of the sub-FPC is set on the terminal bonding set portion as viewed from the outside of the holder member, and FIG. 13 is a main flexible printed circuit board (second flexible printed circuit board: FIG. 14 is a perspective view showing a state in which the circuit forming part of the main FPC is mounted on the holder member, and FIG. 15 is a diagram showing the main terminal joining set part in the holder member. The perspective view which looked at the state which set the 2nd terminal part of PC from the outside of a holder member, FIG. 16 shows the state which set the 2nd terminal part of main FPC in the terminal joining set part in a holder member from the inside of a holder member FIG. 17 is a perspective view, and FIG. 17 shows that each terminal formed on the second terminal portion of the sub FPC set in the terminal joint setting portion of the holder member and each terminal portion formed on the second terminal portion of the main FPC. FIG. 18 is a perspective view showing a soldered state, and FIG. 18 is a perspective view showing an optical pickup device as a finished product.

  The pickup unit 70 (see FIG. 7) having the above-described structure is accommodated in a synthetic resin holder member 80 with the pickup lens 45 exposed, as shown in FIG. In the holder member 80, the pickup unit 70 is fixedly supported by adjusting screws 81a and 81b passing through holes (see FIG. 7) of brackets 67a and 67c formed at both diagonal corners of the chassis 60. Further, a leaf spring piece 82 is fixed to one side end portion of the holder member 80 with a screw 83. For example, a hemispherical convex portion is formed on a surface of the front end portion of the leaf spring piece 82 facing the holder member 80, and a concave portion facing the convex portion is formed on the holder member 80. In the state where the convex portion is engaged with the concave portion (see FIG. 7) formed in the bracket 67 b of the chassis 60, the concave portion of the bracket 67 b is slidably pressed against the concave portion of the holder member 80. By adjusting the tightening amounts of the adjustment screws 81a and 81b, inclination adjustment (skew adjustment) with the concave portion of the bracket 67b of the pickup unit 70 (chassis 60) as a fulcrum becomes possible.

  A terminal bonding set portion 84 is formed at the side end portion opposite to the side end portion to which the leaf spring piece 82 of the holder member 80 is fixed. As described above, when the pickup unit 70 is accommodated in the holder member 80, the second terminal portion 20 d following the second intermediate portion 20 c of the sub FPC 20 that is in a slack state is set in the terminal joint setting portion 84.

  As shown in FIG. 9, the terminal joining set portion 84 is formed on the first set surface 841 formed on the inner side of the holder member 80 and on the outer side of the holder member 80 as shown in FIG. 10. And a second set surface 846. The first set surface 841 and the second set surface 846 are joined substantially vertically, and a presser bar 842 (a lifting restraining member) that is parallel to the joint edge 840 at a predetermined position in front (side) of the joint edge 840. Is formed. Further, a through hole 843 is formed by the step between the first set surface 841 and the presser bar 842 and the step between the second set surface 846 and the presser bar 842.

  As shown in FIG. 10, a stopper portion 844 (a tip position regulating member) is formed at a substantially central portion of the outer surface of the presser bar 842. On the outer side of the holder member 80 (see FIG. 10), support protrusions 845a and 845b are formed on the outer sides of the both ends of the presser bar 842 with steps from the presser bar 842. A protrusion 846 a is formed at a predetermined position on the second set surface 846. A main FPC drawer portion 847, which will be described later, is formed adjacent to the second set surface 846.

  As shown in FIGS. 11 and 12, the second terminal portion 20 d of the sub FPC 20 protruding from the pickup unit 70 has a first set surface 841 of the through hole 843 and a presser bar 842 from the inside to the outside of the holder member 80. It is inserted into the part corresponding to the step between. Then, the tip of the portion of the second terminal portion 20d where the terminals 22a to 22d are formed abuts against the stopper 844 to restrict the tip position, and the tip protrusions 25a and 25b are the pressing bar 842 and the support protrusions 845a and 845b. Between the two. In this state, the surface on which the terminals 22a to 22d of the second terminal portion 20d are formed abuts on the first set surface 841, and the terminal 22a is forward from the joint edge 840 between the first set surface 841 and the second set surface 846. To 22d appear (see FIG. 12). Further, the fin portions 24a and 24b of the second terminal portion 20d are positioned on the inner side of the holder member 80, and between the fin portions 24a and 24b and the side portions of the portions where the terminals 22a to 22b are formed. The engaging recesses 26a, 26b formed in the portion corresponding to the step between the second set surface 846 and the presser bar 842 of the through hole 843, that is, the joining of the first set surface 841 and the second set surface 846 It is arranged between the edge 840 and the presser bar 842.

  In this way, the second terminal portion 20 d of the sub FPC 20 is set on the first set surface 841 of the terminal joint setting portion 84 in the holder member 80. In a state where the second terminal portion 20d is set on the first set surface 841, the tip protruding portions 25a and 25b of the second terminal portion 20d are pressed by the presser bar 842, and therefore the first set surface 841 of the second terminal portion 20d. And the second set part 846 can be more reliably set on the first set surface 841 by suppressing the floating of the portion that protrudes forward from the joint edge 840 between the second set surface 846 and the second set surface 846. In this state, the second terminal portion 20d of the sub-FPC 20 is urged forward (in a direction in contact with the stopper 844) by the elastic return force of the second intermediate portion 20c that bends in a U shape. There is no escape.

  The main FPC 90 is configured as shown in FIG. 13, for example. In FIG. 13, the main FPC 90 includes a first terminal portion 90a located at one end thereof, a circuit forming portion 90c located at the other end, and a gap between the first terminal portion 90a and the circuit forming portion 90c. And an intermediate portion 90b formed integrally. The first terminal portion 90a is formed with a plurality of terminals connected to an external power supply unit, a control unit, and the like. The circuit forming unit 90 c includes a second terminal unit 91, a first element mounting unit 92, a second element mounting unit 93, and a third element mounting unit 94. Four terminals to be connected to the terminals 22a to 22d formed on the second terminal portion 20d of the sub-FPC 20 are formed on the second terminal portion 91, and the light emitting / receiving element 98 is mounted on the first element mounting portion 92. (See FIG. 14). A predetermined circuit element is also mounted on each of the second element mounting portion 93 and the third element mounting portion 94. Each terminal formed in the first terminal portion 90a, each terminal formed in the second terminal portion 91, each element terminal of each of the first element mounting portion 92, the second element mounting portion 93, and the third element mounting portion 94 Are connected by printed wiring (not shown), which is in an electrically conductive state. The 2nd terminal part 91 has the latching protrusion part 911a and 911b which protrude from each of the both sides of the front-end | tip edge.

  The circuit forming portion 90c of the main FPC 90 is attached to the outer surface of the side surface portion and the bottom surface portion of the holder member 80 in a state where the second terminal portion 91, the first element mounting portion 92, and the second element mounting portion 93 are raised. Specifically, as shown in FIG. 14, the second terminal portion 91 is set on the terminal joining set portion 84 of the holder member 80, and the first element mounting portion 92 is a side portion adjacent to the printed circuit board 10 of the holder member 80. Attached to. The second element mounting portion 93 is attached to the side surface portion opposite to the side surface portion where the terminal bonding set portion 84 of the holder member 80 is formed (not shown in FIG. 14; see FIGS. 19 to 26 described later). . The third element portion mounting portion 94 is attached in the vicinity of the second terminal portion 91 on the bottom surface portion of the holder member 80 (not shown in FIG. 14; see FIG. 15 described later). Then, the intermediate portion 90 b of the main FPC 90 is pulled out through a groove formed in the pulling portion 847 of the holder member 80.

  When the first element mounting portion 92 is attached to the holder member 80, the optical axis of the light emitting / receiving element 98 mounted on the first element mounting portion 92 is substantially orthogonal to the optical axis of the pickup lens 45. Is set as follows. The light from the light emitting / receiving element 98 is appropriately irradiated onto the surface of the disk recording medium via the pickup lens 45, and the reflected light from the disk recording medium is appropriately incident on the light emitting / receiving element 98. The holder member 80 is provided with a predetermined optical system (not shown) including a mirror.

  As described above, the second terminal portion 91 of the main FPC 90 is set to the terminal joint setting portion 84 (see FIGS. 11 and 12) in which the second terminal portion 20d of the sub FPC 20 is already set as follows. .

  As shown in FIGS. 11 and 12, the engagement formed on the second terminal portion 20d of the sub-FPC 20 disposed between the joining edge 840 of the first set surface 841 and the second set surface 846 and the presser bar 842. The locking projections 911a and 911b of the second terminal portion 91 of the main FPC 90 are fitted into the locking recesses 26a and 26b as shown in FIGS. The surface of the second terminal portion 91 of the main FPC 90 where the terminals 95a, 95b, 95c, and 95d are not formed abuts on the second set surface 846, and the protrusion 846a of the second set surface 846 is in contact with the second terminal portion 91. The second terminal portion 91 is set on the second set surface 846 so as to fit in the formed locking hole 91a. In this state, the terminals 22a, 22b, 22c, 22d formed on the second terminal portion 20d of the sub FPC 20 and the terminals 95a, 95b, 95c, 95d formed on the second terminal portion 91 of the main FPC 20 are substantially vertical. (See FIG. 15).

  Since the locking projections 911a and 911b formed on the second terminal portion 91 of the main FPC 90 are fitted into the locking recesses 26a and 26b formed on the terminal portion 20d of the sub FPC 20 (see FIG. 16), The second terminal portion 20d of the FPC 20 is prevented from coming off. Further, the locking protrusions 911a and 911b formed on the second terminal portion 91 of the main FPC 90 are sandwiched between the fin portions 24a and 24b formed on the second terminal portion 20d of the sub FPC 20 and the presser bar 842. Become. Further, the second terminal portion 91 of the main FPC 90 is set on the second set surface 846 so that the protrusion 846a formed on the second set surface 846 is fitted into the locking hole 91a formed on the second terminal portion 91 of the main FPC 90. Therefore, the second terminal portion 91 of the main FPC 20 is prevented from being detached. As a result, the first set surface 841 and the second terminal portion 20d of the sub FPC 20 and the second terminal portion 91 of the main FPC 90 are connected to each other so that the terminals 22a to 22d and the terminals 95a to 95d are securely joined. The two setting surfaces 846 can be set.

  As described above, the second terminal portions 20d and 91 of the sub FPC 20 and the main FPC 90 are set on the terminal joint setting portion 84 of the holder member 80, and as shown in FIG. Between the terminals 22a, 22b, 22c, and 22d formed on the first FPC 90 and the terminals 95a, 95b, 95c, and 95d formed on the second terminal portion 91 of the main FPC 90 that is joined substantially perpendicularly thereto. , 53c, 53d. As a result, the terminals 22a, 22b, 22c and 22d of the sub FPC 20 and the corresponding terminals 95a, 95b, 95c and 95d of the main FPC 90 are fixed by soldering. Even during the soldering, the terminals 22a to 22d of the sub-FPC 20 and the terminals 95a to 95b of the main FPC 90 are joined in a substantially vertical state, so that the solder lumps 53a to 53d are formed at the corners of the joined parts. The filling strength of the terminals 22a to 22d and the terminals 95a to 95d is increased.

Against Holder member 80 main FPC90 is mounted with housing the pickup unit 70, as shown in FIG. 18, FPC pressing member 110 and the cover member 120 is mounted, the optical pickup apparatus 100 is completed. In the optical pickup apparatus 100, the relative arrangement relationship of the sub FPC 20, the pickup unit 70, the holder member 80, the circuit forming portion 90c of the main FPC 90, and the FPC pressing member 110 is as shown in FIGS. 19 is their positional relationship as viewed from direction A in FIG. 18, FIG. 20 is their positional relationship as viewed from direction B in FIG. 18, FIG. 21 is their positional relationship as viewed from direction C in FIG. FIG. 22 shows their positional relationship as viewed from direction D in FIG. 18, FIG. 23 shows their positional relationship as viewed from direction E in FIG. 18, FIG. 24 shows their positional relationship as viewed from direction F in FIG. FIG. 18 shows the arrangement relationship seen from the direction G in FIG. 18, and FIG. 26 shows the arrangement relationship seen from the direction H in FIG. 23, 24, and 25, the light emitting / receiving element 98 to be mounted on the first element mounting portion 92 in the circuit forming portion 90c of the main FPC 90 is omitted, and the light emitting / receiving element 98 is omitted. A mounting portion 92a to be mounted is shown.

  As shown in FIGS. 18 to 26, the FPC pressing member 110 includes a side pressing portion 111, a leaf spring portion 112, and a protection portion 113 erected from the bottom surface. The FPC pressing member 110 presses the circuit forming portion 90c of the main FPC 90 against the outer surface of the bottom surface portion of the holder member 80 by its bottom surface, and the side pressing portion 111 presses the side surface portion of the terminal joint setting portion 84 in the holder member 80. The holder member 80 is attached. The leaf spring portion 112 of the FPC pressing member 110 is disposed in the vicinity of the drawer portion 847 from which the intermediate portion 90b of the main FPC 90 is pulled out, and the protection portion 113 is provided on the back surface of the light emitting / receiving element 98 attached to the first element attachment portion 92 Be placed. Then, the cover member 120 is mounted on the holder member 80 so as to cover the protection portion 113 and the first element mounting portion 92 of the FPC pressing member 110.

  According to the optical pickup device 100 according to the embodiment as described above, the necessary flexible printed circuit board is divided into the sub FPC 20 and the main FPC 90 that do not need to be extended to the power feeding unit to be mounted on the device, Since only the sub FPC 20 is integrated with the four conductive wires 44a to 44d into the pickup unit 70, the sub FPC 20 does not get in the way when performing various operations on the pickup unit 70 before completion. The work can be easily performed. Then, after performing such an operation, the optical pickup apparatus can be completed by connecting the sub FPC 20 and the main FPC 90.

  In the above-described embodiment, the first terminal portion 20a of the sub-FPC 20 and the printed board 10 are joined substantially vertically, but the joining angle can be arbitrarily set. In this case, the terminals 21a to 21d formed on the first terminal portion 20a of the sub-FPC 20 and the relay terminals 12a to 12d formed on the printed circuit board 10 are joined at the joining angle.

  Further, the joint angle between the first set surface 841 and the second set surface 846 of the terminal joint set portion 84 in the holder member 80 is not substantially vertical and can be set to an arbitrary angle. Also in this case, the terminals 22a to 22d formed on the second terminal portion 20d of the sub FPC 20 and the terminals 95a to 95d formed on the second terminal portion 91 of the main FPC 90 are joined at the joining angle. .

  As described above, the optical pickup device according to the present invention has an effect of reducing the difficulty of work to be performed before completion due to the flexible printed circuit board, such as CD, DVD, etc. It is useful as an optical pickup device for reading and / or writing information on a disk recording medium.

The perspective view (a) which shows the printed circuit board used for the optical pick-up apparatus which concerns on one Embodiment of this invention, the top view (b) which shows sub FPC used as a 1st flexible printed circuit board, and the said printed circuit board, It is a perspective view (c) which shows a combined state with sub FPC. It is a perspective view which shows the joining state of the relay terminal formed in the printed circuit board, and the terminal formed in the 1st terminal part of sub FPC. It is a perspective view which shows the state by which the sub FPC couple | bonded with the printed circuit board was further supported and fixed to the fixing member. FIG. 5 is an enlarged perspective view (a) showing a fixing structure of a sub FPC at an end portion of the fixing member, and an enlarged perspective view (b) showing a reinforcing structure of the sub FPC. It is a perspective view which shows the joining state of the electroconductive wire extended from the lens holder which accommodates a pick-up lens, and a printed circuit board. The relay terminal formed in the printed circuit board and the terminal joined to the 1st terminal part of sub FPC are soldered, and it is a perspective view which expands and shows the state by which the conductive wire was soldered to the terminal of the printed circuit board. is there. It is a perspective view which shows the pick-up unit in the optical pick-up apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the state which accommodated the pick-up unit shown in FIG. 7 in the holder member. It is a perspective view which expands and shows the structure of the holder member inner side of the terminal junction set part in a holder member. It is a perspective view which expands and shows the structure of the holder member outer side of the terminal junction set part in a holder member. It is a perspective view which expands and shows the state which looked at the 2nd terminal part of the sub FPC set to the terminal junction set part of the holder member shown in FIG. 8 from the inner side of the holder member. It is a perspective view which expands and shows the state which looked at the 2nd terminal part of the sub FPC set to the terminal junction set part of the holder member shown in FIG. 8 from the outer side of the holder member. It is a top view which shows main FPC used as a 2nd flexible printed circuit board in the optical pick-up apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the state which mounted | wore the holder member which accommodated the pick-up unit with the circuit formation part of main FPC shown in FIG. It is a perspective view which expands and shows the state which looked at the 2nd terminal part of sub FPC and the 2nd terminal part of main FPC which were set to the terminal junction set part of a holder member from the outside of a holder member. It is a perspective view which expands and shows the state which looked at the 2nd terminal part of the sub FPC and the 2nd terminal part of main FPC which were set to the terminal junction set part of a holder member from the inside of a holder member. It is a perspective view which expands and shows the state by which the terminal of the 2nd terminal part of the sub FPC set to the terminal joining set part of the holder member and the terminal of the 2nd terminal part of the main FPC were soldered. It is a perspective view which shows the completed product of the optical pick-up apparatus which concerns on one Embodiment of this invention. FIG. 19 is a diagram illustrating a relative arrangement relationship of a sub FPC, a pickup unit, a holder member, a circuit formation portion of a main FPC, and an FPC pressing member 110 in the optical pickup device as viewed from a direction A in FIG. FIG. 19 is a diagram illustrating a relative arrangement relationship of a sub FPC, a pickup unit, a holder member, a circuit formation portion of a main FPC, and an FPC pressing member 110 in the optical pickup device as viewed from a direction B in FIG. FIG. 19 is a diagram illustrating a relative arrangement relationship of a sub FPC, a pickup unit, a holder member, a circuit formation portion of a main FPC, and an FPC pressing member 110 in the optical pickup device as viewed from a direction C in FIG. FIG. 19 is a diagram illustrating a relative arrangement relationship of a sub FPC, a pickup unit, a holder member, a circuit formation portion of a main FPC, and an FPC pressing member 110 in the optical pickup device as viewed from a direction D in FIG. FIG. 19 is a diagram illustrating a relative arrangement relationship of a sub FPC, a pickup unit, a holder member, a circuit formation portion of a main FPC, and an FPC pressing member 110 in an optical pickup device as viewed from a direction E in FIG. FIG. 19 is a diagram illustrating a relative arrangement relationship of a sub FPC, a pickup unit, a holder member, a circuit formation portion of a main FPC, and an FPC pressing member 110 in an optical pickup device as viewed from a direction F in FIG. FIG. 19 is a diagram illustrating a relative arrangement relationship of a sub FPC, a pickup unit, a holder member, a circuit formation portion of a main FPC, and an FPC pressing member 110 in the optical pickup device as viewed from a direction G in FIG. FIG. 19 is a diagram illustrating a relative arrangement relationship of a sub FPC, a pickup unit, a holder member, a circuit formation portion of a main FPC, and an FPC pressing member 110 in the optical pickup device as viewed from a direction H in FIG.

Explanation of symbols

10 Printed circuit board 11a, 11b, 11c, 11d Terminal 12a, 12b, 12c, 12d Relay terminal 20 Sub FPC (first flexible printed circuit board)
20a 1st terminal part 20b 1st intermediate part 20c 2nd intermediate part 20d 2nd terminal part 21a, 21b, 21c, 21d terminal 22a, 22b, 22c, 22d terminal 23a, 23b Side protrusion part 24a, 24b Fin part 25a, 25b Tip protrusion 26a, 26b Locking recess 28 Plate-like auxiliary material 28a, 28b Hole 30 Fixing member 31, 32 Extension protrusion 31a, 32a Recess 33 Space 34a, 34c Through hole 36 Mounting portion 40 Lens holder 41a, 41b, 42a , 42b Support portion 43a, 43b, 43c, 43d Terminal rod 44a, 44b, 44c, 44d Conductive wire 45 Pickup lens 51a, 51b, 51c, 51d Solder mass 52a, 52b, 52c, 52d Solder mass 60 Chassis 61, 62 Standing up Plate 63, 64 Magnet 65, 66 Side bottom 67 a, 67b, 67c Bracket 70 Pickup unit 80 Holder member 81a, 81b Adjustment screw 82 Leaf spring piece 83 Screw 84 Terminal joint set part 840 Joint edge 841 First set surface 842 Presser bar (lifting restraining member)
843 Through hole 844 Stopper (tip position regulating member)
845a, 845b Support projection 846 Second set surface 846a Projection 847 Drawer 90 Main FPC (second flexible printed circuit board)
90a First terminal portion 90b Intermediate portion 90c Circuit forming portion 91 Second terminal portion 91a Locking hole 911a, 911b Locking projection portion 92 First element mounting portion 93 Second element mounting portion 94 Third element mounting portion 98 Light emission / light reception Element 100 Optical pickup device 110 FPC pressing member 111 Side pressing portion 112 Leaf spring portion 113 Protection portion 120 Cover

Claims (9)

A lens holder for fixing and supporting the pickup lens, a plurality of conductive wires extending from the lens holder, a terminal to which each tip portion of the plurality of conductive wires is soldered and fixed, and a relay electrically connected to the terminal A pickup unit comprising: a printed circuit board having terminals; and a driving unit that drives the lens holder elastically supported by the plurality of conductive wires in a predetermined direction by energization of the plurality of conductive wires;
An optical pickup device having a holder member for storing the pickup unit with the pickup lens exposed;
A first terminal portion formed with a terminal to be soldered to a relay terminal of the printed circuit board; a second terminal portion formed with a terminal electrically connected to the terminal of the first terminal portion; and the first terminal. A first flexible printed circuit board having an intermediate portion formed integrally therewith between a portion and the second terminal portion;
A fixing member for fixing and supporting the first flexible printed circuit board in the pickup unit;
Second flexibility having a first terminal portion formed with a terminal connected to an external power feeding portion and a second terminal portion formed with a terminal electrically connected to the terminal of the first terminal portion. A printed circuit board,
A terminal formed on the holder member and formed on the second terminal portion of the first flexible printed board is joined to a terminal formed on the second terminal portion of the second flexible printed board. And a terminal bonding set portion for setting each second terminal portion of the first flexible printed circuit board and the second flexible printed circuit board,
The terminals formed on the second terminal portions of the first flexible printed board and the second flexible printed board are soldered ,
The terminal joint set portion of the holder member has a first set surface and a second set surface that are joined at respective edges with a predetermined angle;
The surface of the first flexible printed circuit board on which the terminals of the second terminal portion are formed abuts on the first set surface, and from the joint edge of the first set surface with the second set surface The second terminal portion of the first flexible printed circuit board is set on the first set surface so that the terminal comes forward.
The second terminal portion of the second flexible printed circuit board so that the surface of the second terminal portion of the second flexible printed circuit board on which the terminal is not formed is in contact with the second set surface. Is set on the second set surface,
The terminal joint set portion is further provided in front of a joint edge between the first set surface and the second set surface, and the second terminal of the first flexible printed circuit board extending forward from the joint edge. A lifting restraining member that holds the surface of the part where the terminal is not formed,
The second terminal portion of the first flexible printed circuit board has locking recesses formed on both side portions,
The second terminal portion of the second flexible printed circuit board has a locking projection that protrudes from both sides of the leading edge,
In the terminal joint set portion, the locking recess of the second terminal portion of the first flexible printed circuit board set on the first set surface is joined to the first set surface and the second set surface. A tip position restricting member for restricting the tip position of the second terminal portion of the first flexible printed circuit board so as to be disposed between an edge and the floating suppression member;
The second terminal of the first flexible printed circuit board in which the locking projection of the second terminal part of the second flexible printed circuit board set on the second set surface is set on the first set surface An optical pickup device fitted into the locking recess of the portion .   2. The optical pickup device according to claim 1, wherein the relay terminal of the printed circuit board and the terminal formed on the first terminal portion of the first flexible printed circuit board are joined substantially vertically.   3. The optical pickup device according to claim 1, wherein the fixing member has a receiving surface that receives a part of an intermediate portion continuing from the first terminal portion of the first flexible printed circuit board.   At least one of contact portions of the first flexible printed circuit board with the terminal non-forming surface opposite to the surface where the terminals of the first terminal portion are formed and the receiving surface of the fixing member of the intermediate portion. 4. The optical pickup device according to claim 3, further comprising a plate-like auxiliary material joined to a surface continuing from a terminal non-formation surface of the first terminal portion. The first flexible printed circuit board has two projecting portions projecting on both sides from a predetermined position not received by the receiving surface of the intermediate portion,
5. The optical pickup according to claim 3, wherein the fixing member has a locking portion that locks each of the two protruding portions protruding from the intermediate portion of the first flexible printed circuit board. apparatus.   6. The optical pickup device according to claim 5, wherein the locking portion is formed on the fixing member with a step from the receiving surface on a side opposite to a direction in which the receiving surface faces. The optical pickup apparatus of claim 1, wherein the said first set surface and the second set surface is joined substantially perpendicularly. A protrusion is formed on the second set surface,
A locking hole is formed in the second terminal portion of the second flexible printed circuit board,
Any second terminal portion of the second flexible printed circuit board, so that the projection fits into the locking hole of claims 1 to 7, characterized in that set in the second set surface the optical pickup device of crab described.   The intermediate portion of the first flexible printed circuit board includes a first intermediate portion received by the receiving surface of the fixing member, and the first intermediate portion and the first set surface of the terminal joint set portion. A second intermediate portion that is between the set second terminal portions and bends in a U-shape and urges the second terminal portions in a direction in which the distal end abuts against the distal end position regulating member by the elastic return force. The optical pickup device according to claim 3, further comprising:

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