JP5125966B2 - Disk unit - Google Patents

Description

The present invention relates to a disk device (for example, a DVD recorder, a DVD player, etc.), and in particular, prevents a loose state of a lead wire connecting a feed motor and a printed wiring board.

FIG. 5 to FIG. 7 show disk devices, which are DVD recorders, FIG. 5 is a partially cutaway plan view showing the disk clamped state, FIG. 6 is the same longitudinal sectional view, and FIG. It is a partially notched top view which shows a tray open state.

As shown in FIGS. 5 to 7, a synthetic resin loader chassis 2 that supports the disk D mounting tray 1 so as to be able to move forward and backward a and b is provided, and the objective lens is movable along the radial direction of the disk D. The synthetic resin traverse chassis 6 on which the optical pickup 3 with OL and the spindle motor 5 with turntable 4 are mounted is connected to the loader chassis 2 through a pair of left and right elastic bodies 7 so as to be able to move up and down c and d. A pair of cam grooves 9 formed in the cam slider 8 is formed on the front plate portion 2a of the loader chassis 2 so that the cam slider 8 is slidable along the left and right directions e and f perpendicular to the forward and backward a and b directions. A pair of cam pins 10 that are integrally projected on the front surface of the traverse chassis 6 are inserted into the cam.

As shown in FIGS. 5 to 7, the cam rack 12 and the tray 1 formed at one end of the cam slider 8.
A first gear 13 that meshes with a tray rack (not shown) integrally projecting along the forward and backward a and b directions on the lower surface of the loader is disposed on the front plate portion 2a of the loader chassis 2 so as to be able to rotate forward and backward g and h. The second gear 14 having a large diameter is integrally formed with the first gear 13.

As shown in FIGS. 5 to 7, a rack 16 extending from the optical pickup 3 along the forward and backward a and b directions is provided, and a feed motor 18 for rotating the pinion 17 meshing with the rack 16 in the forward and reverse directions is a traverse. The chassis 6 is provided.

As shown in FIGS. 5 to 7, an operation groove 22 is formed between a pair of projecting pieces 21 projecting from the lower surface of the cam slider 8 so as to face the operation pins 20 projecting from the front end of the rack 16. A pair of left and right guide pins 23 are integrally projected on the horizontal portion, and a pair of guide grooves 24 are formed on the lower surface of the tray 1 so as to face the guide pins 23. As shown in FIG. A lateral girder 25 is installed between the both side plates, and a clamper 26 is installed in the central through hole 25a of the lateral girder 25
Are arranged so as to be movable up and down within a certain range.

The operation principle will be described. FIG. 5 and FIG. 6 show the disk clamp state. The traverse chassis 6 is moved up to the horizontal position, the disk D on the tray 1 is lifted by the turntable 4, and the The disk D is clamped by the turntable 4 and the clamper 42, and the disk D is rotated at high speed via the turntable 4 by the spindle motor 5.
The pinion 17 is rotated forward and backward by the feed motor 28, the optical pickup 3 is moved along the radial direction of the disk D via the rack 16, and laser light is projected from the optical pickup 3 to the disk D, based on the reflected light. Then, the information recorded on the disk D is read, and the video information is reproduced and recorded.

When the tray is open, from the state shown in FIG. 5, the feed motor 18 is controlled by a timer to rotate the pinion 17 forward so that the rack 16 is moved forward a and the optical pickup 3 is moved to the most advanced position. The operation pin 20 of the rack 16 is pressed against the inclined surface 22a of the operation groove 22, and the cam slider 8 is moved in the direction of the arrow f by the pressing force.
2 is engaged with the first gear 13 and the first gear 13 is rotated forward g to further slide the cam slider 8 in the direction of the arrow f, and the cam pins 10 are lowered along the cam grooves 9.
As shown by the phantom line in FIG. 6, the disk D is transferred from the turntable 4 to the tray 1 by moving the traverse chassis 6 downwardly to an inclined posture.

Subsequently, the inclined surface 24a of the guide groove 24 is pushed by the guide pin 23 so that the tray 1 is slightly advanced a, and the front end of the tray rack (not shown) on the lower surface of the tray 1 is engaged with the first gear 13. At substantially the same time, the cam rack 12 is separated from the first gear 13. The tray 1 is moved forward a through a tray rack (not shown) by the forward rotation g of the first gear 13, and the tray 1 is stopped at the most forward position a (see FIG. 7). At the time of tray-in, the operation is performed in the reverse procedure.

8 to 11 show a conventional example. FIG. 8 is a bottom view of the traverse chassis, FIG. 9 is a perspective view of the lead wire support frame, and FIG. 10 is an enlarged cross-sectional view of the main part of the traverse chassis. FIG. 11 is an explanatory diagram showing the lead wire processing state.

As shown in FIG. 8, a printed wiring board 28 facing the feed motor 18 with the rack 16 in between is disposed on the bottom plate 6 a of the traverse chassis 6, and a lead wire 18 a extending from the feed motor 18 is an electrode of the printed wiring board 28. 29 and soldered to the lead wire 18
A central portion of a is supported by a lead wire support frame 27. Also, the printed wiring board 28
Are connected to a control board (not shown) provided at the lower part of the loader chassis and the spindle motor 5 via a flexible flat cable (not shown). In FIG. 8, reference numeral 30 denotes a gear mechanism that interlocks and connects the feed motor 18, the pinion 17, and the second gear 14.

As shown in FIG. 9, the lead wire support frame 27 includes a support base 32 protruding from the vicinity of the electrode 29 on the edge of the bottom plate 6 a of the traverse chassis 6, and the upper surface of the support base 32 toward the rack 16. A protruding proximal end flange 33, and a central flange 34 bent at a right angle from the distal end of the proximal end flange 33;
The central rod 34 is bent at a right angle from the distal end of the central rod 34 and extends along the proximal flange 33, and a recess 36 is formed between the distal flange 35 and the proximal flange 33.

The processing procedure of the lead wire 18a will be described. The lead wire 18a is soldered to the electrode 29 of the printed wiring board 28 as indicated by a two-dot chain line k in FIG.

In this case, the length of the lead wire 18a is made relatively large in order to perform the soldering operation smoothly. Therefore, if the lead wire 18a is left as it is after soldering, the lead wire 18a will hang down and come into contact with the rack 16 which is a movable member.

Therefore, as shown by the solid line m in FIG. 10, the lead wire 18a is hooked on the center rod 34 of the lead wire support frame 27, and the portion of the lead wire 18a drawn into the recess 36 is shown in FIG. By pulling the lead wire 18a, the lead wire 18a is linearly stretched between the feed motor 18 and the lead wire support frame 27, whereby the lead wire 18 is matched to the safety standard.
a is separated from the rack 16 at a predetermined interval. In addition, there exists what was described in patent document 1 as a related technique.
Utility Model Registration No. 3101607

In the above-described conventional configuration, the lead wire 18a is only hooked on the center rod 34 of the lead wire support frame 27. Therefore, as shown in FIG. 11, the lead wire 18a stretched linearly (FIG. 10).
When the lead wire 18a hits the lead wire 18a in the direction indicated by the arrow F2 and the lead wire 18a is loosened, as shown by a one-dot chain line t in FIG. The lead wire 18a may come into contact with the rack 16. In this case, the movement of the rack 16 may be hindered, causing a delay or error in reading by the optical pickup 3, or damage to the lead wire 18a to cause a short accident. There is.

The present invention has been made in view of the above-mentioned conventional drawbacks, and an object of the present invention is to provide a disk device in which the stretched state of the lead wires extending from the feed motor is not loosened.

In order to achieve the above object, a disk device of the present invention is provided with a loader chassis that supports a disk mounting tray so as to be able to move forward and backward, and a synthetic resin traverse chassis is supported on the loader chassis so as to be movable up and down. The traverse chassis is provided with a turntable and an optical pickup movable along the radial direction of the disk clamped on the turntable. The optical pickup is provided with a rack, and a pinion meshing with the rack is rotated forward and backward. A feed motor is provided on the traverse chassis, and a printed wiring board facing the feed motor with a rack interposed therebetween is disposed on the bottom plate of the traverse chassis, and a lead wire extending from the feed motor is soldered to an electrode of the printed wiring board. The center part of the lead wire It is supported by a lead wire support frame integrally formed on the bottom plate of the chassis, and the disk on the tray is clamped on the turntable by moving the traverse chassis upward, and the optical pickup is picked up via the pinion and rack by the feed motor. In the disk device that is moved in the radial direction of the disk, projects laser light from the optical pickup onto the disk, and reads information recorded on the disk based on the reflected light, the lead wire support frame includes a rack A supporting main rod and an auxiliary rod that protrude along the longitudinal direction and are parallel to each other with a small gap therebetween, and the lower surface of the auxiliary rod is the same as or lower than the upper surface of the supporting main rod. are set, through a gap the lead from the upper surface of the support main rod inserted toward the lower surface of the auxiliary rod, said support main rod The tip is extended longer than the tip of the auxiliary rod, and a stopper projection is integrally provided on the upper surface of the tip of the supporting main rod, and a gap is formed between the stopper projection and the tip of the auxiliary rod. A lead wire is inserted between the supporting main rod and the auxiliary rod through the gap .

Further, in the disk device of the present invention, a retaining protrusion is integrally provided on the bottom surface of the tip of the auxiliary rod, and the bottom surface of the retaining protrusion is an inclined surface inclined downward from the stopper protrusion side. It is characterized by sliding the lead wire along the surface.

According to the disk device of the present invention, after the lead wire extending from the feed motor is soldered to the electrode of the printed circuit board, the lead wire is supported from the upper surface of the support main rod of the lead wire support frame to the support main rod and the auxiliary rod. The lead wire can be stretched linearly between the feed motor and the support main body by simply pulling the part of the lead wire that passes through the gap between Since the lead wire is not caught by the auxiliary rod when the portion passed through is pulled, the lead wire can be pulled quickly and easily with a small force.

In addition, since the lower surface of the auxiliary rod is set to be equal to or lower than the upper surface of the supporting main rod, the lead wire stretched in a straight line, for example, hits a tool and is compared with the lead wire. Even if an excessively large load is applied, the lead wire pulled by the load does not get caught in the corner between the lower surface of the auxiliary rod and the gap side end surface, and the lead wire is not loosened. Therefore, when the lead wire is loosely stretched as in the prior art and the lead wire comes into contact with the rack, the movement of the rack is hindered, resulting in a delay or error in reading by the optical pickup, It is possible to reliably eliminate the possibility of a short-circuit accident due to damage.

Further, according to the disk device of the present invention , the lead wire is inserted into the gap between the stopper projection of the support main rod and the tip of the auxiliary rod so that the lead wire is not accidentally detached from the support main rod. Thus, it can be easily inserted between the supporting main rod and the auxiliary rod.

Furthermore, according to the disk device of the present invention, the lead wire can be more easily inserted between the supporting main rod and the auxiliary rod by sliding the lead wire along the inclined surface of the auxiliary rod.

In addition, a retaining protrusion is integrally projected on the lower surface of the front end portion of the auxiliary rod, and a stopper projection is integrally projected on the upper surface of the distal end portion of the supporting main rod. It is possible to prevent the lead wires inserted through the lower surface of the auxiliary rod from being accidentally disconnected from the supporting main rod and the auxiliary rod.

1 to 4 show a main part of a disk apparatus according to an embodiment of the present invention. FIG. 1 is a bottom view of the traverse chassis, and FIG. 2A is a perspective view of the lead wire support frame. Figure 2 (b
) Is a plan view of the lead wire support frame, FIG. 2 (c) is an AA arrow view, FIG. 2 (d) is a BB arrow view, and FIG. 3 is an enlarged cross-sectional view of the main part of the traverse chassis. FIG. 4 is an explanatory view showing the lead wire processing state.

As shown in FIGS. 1 and 2, a lead wire support frame 27 that supports the central portion of the lead wire 18a.
Has a support base 32 projecting from the vicinity of the electrode 29 to the edge of the bottom plate 6a of the traverse chassis 6, and a base end rod 33 projecting from the upper surface of the support base 32 toward the rack 16, A supporting main rod 38 having a rectangular cross section is integrally projected so as to be bent at a right angle from the tip of the base end rod 33, and a gap 39 with a small interval r1 (for example, 2.0 mm) is provided in the supporting main rod 38. In addition, a parallel auxiliary rod 40 having a rectangular cross section is provided integrally with the base rod 33. The configuration other than the above is shown in FIG.
Since it is almost the same as the configuration shown in FIG. 11, the same parts are denoted by the same reference numerals and the description thereof is omitted.

As shown in FIG. 2D, in this embodiment, the lower surface 40a of the auxiliary rod 40 is the supporting main rod 3.
8 is set low with a small interval r2 (for example, 0.5 mm) from the upper surface 38a.

As shown in FIGS. 2B and 2D, the tip end portion of the support main rod 38 is extended longer than the tip end of the auxiliary rod 40 by a predetermined interval r3 (for example, 5.0 mm). A stopper projection 41 is integrally projected on the top surface of the distal end portion, and a gap 42 having a predetermined interval r4 (for example, 1.5 mm) is formed between the stopper projection 41 and the distal end of the auxiliary rod 40.

As shown in FIG. 2D, a retaining projection 43 is integrally provided on the lower surface of the tip of the auxiliary rod 40, and the bottom surface of the retaining projection 43 is an inclined surface 43a that is inclined downward from the stopper projection 41 side. ing.

The processing procedure of the lead wire 18a will be described. As shown by a two-dot chain line k in FIG.
After soldering 8a to the electrode 29 of the printed wiring board 28, as shown by the solid line m in FIG.
By inserting the lead wire 18a into the gap 42 and sliding along the inclined surface 43a, the lead wire 18a is inserted from the upper surface 38a of the supporting main rod 38 through the gap 39 to the lower surface 40a of the auxiliary rod 40, as shown in FIG. As shown, the lead wire 1a is pulled between the feed motor 18 and the lead wire support frame 27 by pulling the portion of the lead wire 18a that has passed through the gap 39 in the direction of arrow F1.
8a is linearly stretched, and thereby the lead wire 18a is separated from the rack 16 at a predetermined interval in accordance with safety standards.

According to the above configuration, when pulling the portion of the lead wire 18a that has passed through the gap 39, the lead wire 18a is not caught by the auxiliary rod 40, so that the pulling operation of the lead wire 18a can be performed quickly and easily with a small force. Can do.

As shown by solid lines m in FIGS. 3 and 4, even if a lead or the like is applied to the linearly extending lead wire 18a and a relatively large load is applied to the lead wire 18a in the direction of the arrow F2, the load The lead wire 18a pulled by the lower surface 40a of the auxiliary rod 40 and the gap side end surface 4
It does not get caught in the corner 40c between 0b and the lead wire 18a is not loosened. Accordingly, the lead wire 18a is loosely stretched as in the prior art (see the alternate long and short dash line t in FIG. 10), and the lead wire 18a comes into contact with the rack 16, so that the movement of the rack 16 is hindered. There is a delay or error in reading by the pickup 3, or the lead wire 18
It is possible to reliably eliminate the possibility of a being damaged and causing a short-circuit accident.

Further, the lead wire 18a is inserted into the gap 42 between the stopper protrusion 41 of the support main rod 38 and the tip of the auxiliary rod 40 so that the lead wire 18a is not accidentally disconnected from the support main rod 38. It can be easily inserted between the main rod 38 and the auxiliary rod 40.

Further, by sliding the lead wire 18a along the inclined surface 43a of the auxiliary rod 40, the lead wire 18a can be more easily inserted between the support main rod 38 and the auxiliary rod 40.

In addition, the retaining protrusion 43 is integrally provided on the lower surface of the distal end portion of the auxiliary rod 40, and the stopper protrusion 41 is integrally protruded on the upper surface of the distal end portion of the supporting main rod 38, so that the upper surface 38a of the supporting main rod 38 is provided. It is possible to prevent the lead wire 18a inserted through the gap 39 from the gap 39 to the lower surface 40a of the auxiliary rod 40 from accidentally disconnecting from the supporting main rod 38 and the auxiliary rod 40.

As an example of specific dimensions, when the diameter n (see FIG. 4) of the lead wire 18a is 0.7 mm, the gap r1 between the gaps 39 is set to be larger than the diameter n and four times the diameter n. Specifically, when the interval r1 is 0.8 to 2.8 mm (preferably 1.0 to 2.5 mm) and less than 0.8 mm, it is difficult to insert the lead wire 18a into the gap 39. 2.8
If it exceeds mm, the lead wire 18a is not easily caught by the corner portion 40c.

The distance r2 between the lower surface 40a of the auxiliary rod 40 and the upper surface 38a of the supporting main rod 38 is 0 to 1.0 m.
m (preferably 0.3 to 0.7 mm). When the distance is less than 0 mm, the lead wire 18a is difficult to be caught by the corner portion 40c. It becomes difficult to insert it into the lower surface side.

It is a bottom view of the traverse chassis which is the principal part of the disc apparatus which is one Embodiment of this invention. (A) is a perspective view of the lead wire support frame, (b) is a plan view of the lead wire support frame, (c) is an AA arrow view, and (d) is a BB arrow view. It is a principal part expanded horizontal sectional view of the traverse chassis. It is explanatory drawing which shows the lead wire processing state. It is a partially cutaway plan view showing a disk clamp state of the disk device. It is the longitudinal cross-sectional view. It is a partially notched top view which shows the tray open state. It is a bottom view which shows a prior art example. It is a perspective view of the lead wire support frame. It is a principal part expanded horizontal sectional view of the traverse chassis. It is explanatory drawing which shows the lead wire processing state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tray 2 Loader chassis 3 Optical pick-up 4 Turntable 6 Traverse chassis 6a Traverse chassis bottom plate 18 Feed motor 18a Lead wire 27 Lead wire support frame 28 Printed wiring board 29 Electrode 38 Support main frame 38a Upper surface of support main body 39 Air gap 40 Auxiliary Ａ 40a Lower surface of auxiliary rod 41 Stopper projection 42 Gap 43 Retaining projection 43a Inclined surface D Disc

Claims (2)

A loader chassis that supports a disk mounting tray so as to be able to move forward and backward is provided, a synthetic resin traverse chassis is supported on the loader chassis so as to be movable up and down, and a turntable and a disk clamped on the turntable are mounted on the traverse chassis An optical pickup movable along the radial direction of the optical pickup, a rack is provided in the optical pickup, a feed motor for rotating the pinion meshing with the rack in the forward and reverse directions is provided in the traverse chassis, and the feed A printed wiring board facing the motor with a rack interposed therebetween is disposed on the bottom plate of the traverse chassis, the lead wire extending from the feed motor is soldered to the electrode of the printed wiring board, and the central portion of the lead wire is the bottom plate of the traverse chassis Is supported by a lead wire support frame formed integrally with the By moving the traverse chassis upward, the disk on the tray is clamped on the turntable, and the optical pickup is moved in the radial direction of the disk through the pinion and rack by the feed motor, and the laser from the optical pickup to the disk is moved. In a disk device that projects light and reads information recorded on the disk based on the reflected light,
The lead wire support frame has a support main rod and an auxiliary rod that protrude along the longitudinal direction of the rack and are parallel to each other with a small gap therebetween, and the lower surface of the auxiliary rod is the same as the upper surface of the support main rod or It is set lower than the upper surface of the supporting main rod, and the lead wire is inserted from the upper surface of the supporting main rod through the gap to the lower surface of the auxiliary rod ,
The front end of the support main rod extends longer than the front end of the auxiliary rod, and a stopper projection is integrally provided on the upper surface of the front end of the support main rod, and a gap is formed between the stopper projection and the front end of the auxiliary rod. A disk device formed by inserting a lead wire between a supporting main rod and an auxiliary rod through the gap . A retaining projection is integrally formed on the bottom surface of the tip of the auxiliary rod, and the bottom surface of the retaining projection is an inclined surface inclined downward from the stopper projection side, and the lead wire is slid along the inclined surface. The disk apparatus according to claim 1 , wherein the disk apparatus is configured as described above.

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