JP3898550B2 - Floating lock mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floating lock mechanism that locks a floating state of a disc reproducing unit when a disc is carried into and out of a disc reproducing unit that is floatingly supported in a disc player.
[0002]
[Prior art]
In general, a disc player for reproducing a disc-shaped recording medium (hereinafter referred to as a disc) such as a CD or a DVD is brought into the disc player by a disc reproducing unit having a turntable or an optical pickup inside a chassis and a loading roller. A disk loading mechanism for loading and unloading the disk and a disk clamping mechanism for mounting the disk on the turntable.
[0003]
In particular, in the case of an in-vehicle disc player, in order to prevent sound skipping during playback, the chassis and the escutcheon and the disc playback unit provided therein are configured as separate members, and both are configured by elastic members such as dampers and springs. By adopting a floating state, the vehicle is devised so that vibration during traveling of the vehicle is not transmitted from the chassis or the escutcheon to the internal disk reproducing unit.
[0004]
Further, such a disc player positions the disc insertion slot provided on the escutcheon side and the disc reproducing unit when the loading roller in the disc loading mechanism is pressure-bonded to the disc to carry the disc in and out. Floating lock mechanism is provided to secure the chassis to the chassis or escutcheon side.
[0005]
As described above, at the time of loading / unloading of the disc, an operation for pressing the loading roller against the disc is required for the disc loading mechanism, and an operation for locking the floating state of the disc reproducing unit (floating unit) to the floating lock mechanism. Is required. When the disc is played, the loading mechanism is required to release the loading roller from the disc, and the floating lock mechanism is required to unlock the disc playback unit (floating unit).
[0006]
[Problems to be solved by the invention]
By the way, in the conventional floating lock mechanism, locking and unlocking are performed by engaging and disengaging the lock member with respect to the floating portion. It is desirable that the lock by such a lock member maintains the lock when a small force is applied. However, when a large impact is applied to the lock member and the member that drives the lock member, this impact is directly transmitted to the movable part, and there is a possibility that the impact is not applied to the movable part. there were.
[0007]
The present invention has been proposed in order to solve the above-described problems of the prior art. The purpose of the present invention is to maintain the lock in a normal state and to temporarily lock the lock when a large impact is applied. An object of the present invention is to provide a floating lock mechanism that absorbs an impact while being released and returns to a locked state, thereby preventing deformation of members.
[0008]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a lock member that is rotatable about an axis between a lock position for fixing a floating portion elastically supported in a disc player and a release position for releasing the fixed state. The floating lock mechanism of the disc player provided with the following technical features.
[0009]
That is, the invention according to claim 1 has a stopper portion that restricts the movement of the floating portion by contacting the lock member at the lock position in the disc player, and the stopper portion is the lock member. It is provided at a position in contact with the outer peripheral end with respect to the rotation shaft of the member, and has a tapered inclined surface toward the rotation outer side of the lock member . According to the first aspect of the present invention, when a small force is applied, such as when a disc is inserted, the movement of the floating portion is restricted by the stopper portion and the lock by the lock member is maintained. On the other hand, when a large impact is applied, the lock member absorbs the impact while temporarily releasing the lock by the inclined surface of the stopper portion, and returns to the locked state again, so that deformation of the member does not occur.
[0010]
According to a second aspect of the present invention, in the floating lock mechanism according to the first aspect, the floating portion is provided with a shift lever that drives the lock member between a lock position and a release position. Further, when the lock member is in the lock position, there is provided a restricting portion that abuts in the disc player and restricts the movement of the floating portion.
In the invention according to the second aspect as described above, when a small force is applied such as when a disc is inserted, the floating portion is controlled by the stopper portion abutting on the lock member and the shift lever regulating portion abutting in the disc player. Movement is more reliably regulated.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention (hereinafter referred to as embodiments) will be described below with reference to FIGS.
(1) Configuration of Embodiment 1-1. Floating portion First, as shown in FIG. 1, the floating portion 1 includes a plate 1b floatingly supported by a plurality of dampers and springs (not shown) made of an elastic member in the chassis C of the disc player, and the plate 1b. It is comprised by the member for disk reproduction | regeneration provided on the top. Although not shown in the drawing, this disk reproducing member includes an optical pickup for reading information on the disk, a pickup feeding mechanism for moving the optical pickup in the radial direction of the disk, a turntable on which the disk is mounted, and rotated by a spindle motor. Have.
[0012]
1-2. As shown in FIGS. 1 and 2, the disk loading mechanism floating portion 1 is provided with a loading roller 2, an upper guide 3, and a lower guide 4 on the disk insertion opening side. The loading roller 2 is rotatably provided by a drive mechanism (not shown) that is operated by a motor. The upper guide 3 is a member that sandwiches the disk with the loading roller 2 and guides its movement. The lower guide 4 is a guide that is disposed below the upper guide 3 and guides the disk to the loading roller 2.
[0013]
The loading roller 2 is a disk loading position (upward in FIG. 2) where the disk is pressed against the disk and transported between the upper guide 3 and a release position (downward in FIG. 2) where the loading roller 2 retracts downward to release the disk. ) To be movable between. The lower guide 4 is also provided so as to be able to rotate with the movement of the loading roller 2. The drive mechanism for rotating the loading roller 2 is configured to operate in the opposite direction when a disk insertion is detected by a sensor (not shown) and when a disk ejection instruction is input by a button operation or the like by the user. Has been.
[0014]
1-3. As shown in FIGS. 2 and 4, the lock arm floating portion 1 is provided with lock arms 10 and 11 symmetrically at the positions corresponding to the left and right ends of the upper guide 3, respectively. The lock arms 10 and 11 have a lock position where the lock claws 10a, 10b, 11a and 11b formed on the lower end and the upper end respectively come into contact with a part of the chassis C, and the lock claws 10a. , 10b, 11a, and 11b are provided so as to be rotatable around the shaft portions 10c and 11c between the release positions where the shafts 10c and 11c are separated from the chassis C.
[0015]
In the chassis C, the lower abutting portions A1 and A2 are provided at locations where the lock claws 10a and 11a of the left and right lock arms 10 and 11 abut, and at the locations where the lock claws 10b and 11b abut, Upper contact portions B1 and B2 are provided. The lower abutting portions A1 and A2 have inclined surfaces on the disc insertion side (front) where the lock claws 10a and 11a are locked. Further, as shown in FIG. 6, the lower left contact portion A1 of the chassis C has a stopper portion X with which the front end portion of the lock arm 10 contacts, as shown in FIG. The stopper portion X is provided with an inclined portion (tapered portion). Although the angle of the inclined portion can be set freely, it is desirable to set the angle at which the tip of the lock arm 10 escapes in the event of an excessive impact. For example, it can be considered to be about 25 °.
[0016]
One end of the torsion spring 6 is attached to one end (the left end in FIG. 2) of the lock arms 10 and 11 as described above. The other end of the torsion spring 6 is attached to the floating portion 1 and is configured so that the lock arms 10 and 11 are biased to the lock position.
[0017]
The lock arm 11 is provided with a roller slide portion 11d which is a hole or groove through which the left and right ends of the loading roller 2 are slidably inserted. Further, the lock arms 10 and 11 are formed with guide slide portions 10e and 11e which are holes or grooves through which protrusions 4a formed on the left and right ends of the lower guide 4 are slidably inserted. .
[0018]
1-4. As shown in FIG. 2, a shift lever 9 is provided on the right side of the shift lever floating portion 1 so as to be slidable back and forth by a drive mechanism (not shown). The shift lever 9 is formed with an inclined cam portion 9b which is a hole or groove through which a protrusion 11f provided on the other end portion (the right end portion in FIG. 2) of the lock arm 11 is slidably inserted. . When the shift lever 9 moves forward, the inclined cam portion 9b rotates the lock arms 10 and 11 against the urging force of the torsion spring 6 to move the lock claws 10a, 10b, 11a, and 11b from the chassis C. While being released, the loading roller 2 and the lower guide 4 are configured to move away from the disk. Further, the end of the shift lever 9 (the right end in FIG. 2) is a restricting portion that abuts against a part of the chassis C and plays a part of the role of the lock when the lock arms 10 and 11 are in the lock position. 9c is provided.
[0019]
The drive mechanism for moving the shift lever 9 is used when a sensor (not shown) detects that the center of the disk has reached a position that matches the turntable and when a disk ejection instruction is input by a user's button operation or the like. These are configured to operate in opposite directions.
[0020]
(2) Operation of the embodiment 2-1. The operation of this embodiment as described above in the initial state will be described below. First, in an initial state in which no disc is inserted, the lock arms 10 and 11 are moved by the urging force of the torsion spring 6 so that the lock claws 10a and 11a are in the lower contact portions A1 and A2 as shown in FIGS. The lock claws 10b and 11b are in the locked position where they are in contact with the upper contact portions B1 and B2, and the loading roller 2 is in the disk loading position.
[0021]
2-2. As shown in FIG. 7, when the disc D is inserted from the disc insertion opening, the tip of the disc D and the tip of the upper guide 3 hit each other, and the floating portion 1 is moved backward. There is a possibility that a small force will be applied. At this time, the restricting portion 9c of the shift lever 9 is in contact with a part of the chassis C, and the distal end portion of the lock arm 10 is in contact with the stopper portion X, so that the rearward movement of the floating portion 1 is prevented. The
[0022]
2-3. When a large impact is applied due to a load at the time of impact or due to a drop or the like, the floating portion 1 tends to shift backward with its own weight. At this time, as shown in FIGS. 8 (A) and 8 (B), the lock arm 10 is rotated, and its tip moves along the inclination of the stopper portion X, so that the lock is temporarily released, When the lower guide 4 connected to the lock arm 10 is elastically deformed, the impact is absorbed, and then the lock arm 10 returns to the original position.
[0023]
2-4. When the disc playback disc D is inserted, this is detected by the sensor, and the loading roller 2 starts to rotate. The disk D is sandwiched between the loading roller 2 and the upper guide 3 and is pulled in by the rotation of the loading roller 2 and conveyed onto the turntable. When the sensor detects that the center of the disk D has come to a position that matches the turntable, the center of the disk D is clamped to the turntable by a clamping mechanism (not shown).
[0024]
On the other hand, as the shift lever 9 moves forward, the inclined cam portion 9b urges the projection 11f and the lock arm 5 rotates against the urging force of the torsion spring 6 as shown in FIGS. The lock claws 10a, 10b, 11a, and 11b release the lower contact portions A1 and A2 and the upper contact portions B1 and B2, and the roller slide portions 11d and the guide slide portions 10e and 11e. Along with this, the loading roller 2 and the lower guide 4 move away from the disk.
[0025]
As described above, after the disc is mounted on the turntable, reproduction by the optical pickup is performed on the disc rotated by the turntable. Then, after the disc is played, when a disc discharge instruction is input by a user's button operation or the like, the disc D is released from the turntable by the clamp mechanism.
[0026]
At this time, the loading roller 2 also starts to rotate, and the inclined cam portion 9b urges the projection 11f upward by the rearward movement of the shift lever 9, so that the lock arm 5 as shown in FIGS. , And the lock claws 10a, 10b, 11a, 11b come to the lock position where they come into contact with the lower contact portions A1, A2 and the upper contact portions B1, B2. At the same time, the loading roller 2 and the guide slide portions 10e and 11e move upward along the roller slide portion 11d and the guide slide portions 10e and 11e, and the disc is sandwiched between the loading roller 2 and the upper guide 3. Then, the disk is ejected by the rotating loading roller 2.
[0027]
(3) Effects of the Embodiment According to the present embodiment as described above, when a small force is applied to the floating portion 1 when a disk is inserted or the like, the lock is maintained, while a large force is applied by an impact or the like. When released, the shock can be absorbed while the lock is temporarily released, and the lock can be restored again. Therefore, at the time of a drop impact, etc., the impact on the movable part can be reduced, deformation and breakage can be prevented, and the lock at normal times can be maintained.
[0028]
(4) Other Embodiments The present invention is not limited to the above-described embodiment, and the material, size, shape, quantity, and the like of each member can be changed as appropriate. For example, any well-known mechanism can be applied to the drive mechanism that rotates the loading roller 2 and the drive mechanism that moves the shift lever 9.
[0029]
Further, the shapes of the lock arms 10 and 11 and the shift lever 9 are not limited to those shown in the above embodiment. Further, the urging member that applies the pressing force to the disk to the loading roller 2 and the urging force of the lock by the lock arms 10 and 11 is not limited to the torsion spring 6 but may be a spring having another shape. Furthermore, the disc player to which the present invention is applied may be for reproduction only or for recording / reproduction, and any type or device as long as it is an apparatus for a flat recording medium. It may be an apparatus that targets a recording medium of a size.
[0030]
【The invention's effect】
As described above, according to the present invention, the lock is maintained in a normal state, and when a large impact is applied, the impact is absorbed while the lock is temporarily released, and the member is restored by returning to the locked state. Provided is a floating lock mechanism in which no deformation or the like occurs.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing one embodiment of a floating lock mechanism of the present invention.
FIG. 2 is a right see-through side view showing the floating lock of the embodiment of FIG.
FIG. 3 is a right see-through side view showing the floating lock release of the embodiment of FIG. 1;
4 is a left see-through side view showing the floating lock of the embodiment of FIG.
FIG. 5 is a left see-through side view showing the floating lock release of the embodiment of FIG. 1;
6 is a diagram clearly showing the lock unit of FIG. 4;
7 is a plan view showing when the disc is inserted in the embodiment of FIG. 1; FIG.
8 is a left perspective side view showing the floating lock (A) and the over-impact (B) in the embodiment of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Floating part 1b ... Plate 2 ... Loading roller 3 ... Upper guide 4 ... Lower guide 4a, 5f ... Protrusion 6 ... Torsion spring 7 ... Clamper arm plate 7a ... Clamper 8 ... Tensile coil spring 9 ... Shift lever 9b ... Inclination cam part 9c ... Regulators 10, 11 ... Lock arms 10a, 10a, 11a, 10b ... Lock claws 10c, 11c ... Shaft part 11d ... Roller slide part 11f ... Protrusions 10e, 11e ... Guide slide parts A1, A2 ... Lower contact Part B1, B2 ... Upper contact part C ... Chassis X ... Stopper part D ... Disc

Claims (2)

In a floating lock mechanism of a disc player provided with a lock member that can rotate about an axis between a lock position for fixing a floating portion elastically supported in the disc player and a release position for releasing the fixed state,
The disc player has a stopper portion that regulates movement of the floating portion by contacting the lock member at the lock position.
The stopper portion is provided at a position in contact with an outer peripheral end portion with respect to the rotation shaft of the lock member, and further includes a tapered inclined surface toward the rotation outer side of the lock member. Floating lock mechanism.   The floating portion is provided with a shift lever that drives the lock member between a lock position and a release position, and the shift lever contacts the disc player when the lock member is in the lock position. The floating lock mechanism according to claim 1, further comprising a restricting portion that contacts and restricts the movement of the floating portion.

Images