JP3784228B2 - Disk device with vibration prevention mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk selection type disk device used, for example, for in-vehicle use, and in particular, a disk device provided with a vibration preventing mechanism capable of effectively preventing the generation of rattle noise when external vibration is applied. About.
[0002]
[Prior art]
FIG. 3 is a side view showing a disk device having a conventional magazine type disk selection function.
[0003]
A magazine M is loaded in the housing 2 of the disk device 1. In the magazine M, a plurality of disks D are stored. The disk D is, for example, a CD (compact disk), a DVD (digital versatile disk), or the like.
[0004]
A moving unit U is provided in the housing 2. The support pins 3, 3 provided on the moving unit U are guided by guide holes 2 a, 2 a formed in the vertical direction on the side plate of the housing 2 and can move in the vertical direction. The moving unit U has a function of holding the disk D in the magazine M, and is mounted with a rotation driving mechanism for rotating the held disk and an optical head for reading a signal recorded on the disk D.
[0005]
In addition, any disk in the magazine M is conveyed to the moving unit U in the Y1-Y2 direction, taken into the moving unit U, and the disk D is returned from the moving unit U to an empty space in the magazine M. A transfer mechanism is provided (not shown).
[0006]
A driving member 4 made of a plate material is provided outside the side plate of the housing 2. The long holes 4a and 4a formed in the drive member 4 are guided by guide pins 5 and 5 fixed to the side plate of the housing 2, and the drive member 4 is supported so as to be able to reciprocate in the Y1-Y2 direction. The drive member 4 is formed with inclined cam holes 4b, 4b formed to be inclined with respect to the Y direction and the Z direction. Support pins 3 and 3 provided in the moving unit U are inserted into the inclined cam holes 4b and 4b through the guide holes 2a and 2a. The inclined cam holes 4b and 4b include a stepped shape in which a plurality of step portions are provided in the middle of the inclination in addition to the linear shape as shown in FIG.
[0007]
The driving member 4 is driven in the Y1-Y2 direction by power from a motor or the like. When the driving member 4 is driven in the Y1 direction, the moving unit U is raised in the Z1 direction by the inclined cam holes 4b and 4b, and when the driving member 4 is driven in the Y2 direction, the moving unit 4 is moved by the inclined cam holes 4b and 4b. Unit U is lowered in the Z2 direction. The movement distance of the drive member 4 is detected by a linear sensor or the like, and the movement unit U is set to a predetermined elevation height by controlling the movement distance. Alternatively, when the inclined cam holes 4b, 4b are stepped, each stepped portion has a predetermined elevation height.
[0008]
As a result, the drive position P1 in the height direction of the moving unit U is determined, and the moving unit U stops at a position where any disk D in the magazine M is selected. At this drive position P1, the disk D is taken in and held in the moving unit U, and the signal recorded on the disk D is reproduced.
[0009]
In the disk device 1, when external vibration or the like occurs, the guide holes 2 a and 2 a of the housing 2 and the inclined cam holes 4 b and 4 b of the drive member 4 rattle and the inclined cam holes 4 b and 4 b of the drive member 4. And rattle noise due to rattling between the support pins 3 and 3 tends to occur.
[0010]
Additional rattle noise, driving position movement unit U drives the disc and the mobile unit U when selecting movement is selected to stop selecting a disk in the magazine M to move to the Z 1-Z 2 direction P1 Occurs when Further, when the moving unit U stops at the lowest standby position P0 and the disk is not being driven, rattle noise is similarly generated.
[0011]
Therefore, as a conventional measure for preventing rattle noise, a coil spring 6 that constantly urges the moving unit U during the disk selective movement operation is provided to absorb the rattling between the parts during the disk selective movement. The structure to be considered is considered. Or the structure etc. which provide the leaf | plate spring 7 in the bottom part of the housing | casing 2, and continue energizing the moving unit U located in the stand-by position P0 upwards, and prevent the rattling between each said part are considered.
[0012]
[Problems to be solved by the invention]
However, the conventional disk device 1 has the following problems.
[0013]
First, in the structure in which the upward biasing force is always applied to the moving unit U by the coil spring 6 during the selective moving operation of the moving unit U, the load when the moving unit U is selectively moved always increases. The mobile unit U when the mobile unit U prevention of rattle noise urging force of the coil spring 6 becomes small when moving upward (Z 1 direction) is reduced, the mobile unit U is moved in the Z 2 direction opposite The load acting on the vehicle is maximized, and a large amount of electric power is required for the operation of lowering the mobile unit U.
[0014]
Further, in the structure in which the moving unit U at the standby position P0 is urged by the leaf spring 7, rattle noise at the standby position P0 can be prevented, but noise when the moving unit U is moving cannot be prevented. .
[0015]
Further, in the structure in which the moving unit U at the standby position P0 is urged by the leaf spring 7, the pair of support pins 3 and 3 cannot be uniformly pressed to the inclined cam holes 4b and 4b, and It is difficult to pressurize the elongated holes 4a and 4a equally to the guide pins 5 and 5, respectively. Therefore, a gap is formed between any one of the support pins 3 and the inclined cam hole 4b, or a gap is formed between any one of the guide pins 5 and the long hole 4a. Even if the biasing force is increased, rattle noise may not be reliably prevented.
[0016]
The present invention is to solve the above-described conventional problems, and provides a disk device having a vibration preventing mechanism that can reliably prevent rattle noise without applying an excessive load to a moving unit during selective disk movement. The purpose is that.
[0017]
It is another object of the present invention to provide a disk device provided with a vibration preventing mechanism capable of preventing rattle noise by using the same member for a moving unit in a selective movement operation and a moving unit at a standby position.
[0018]
It is another object of the present invention to provide a disk device having a vibration preventing mechanism that can reliably prevent rattle noise for a moving unit in a standby position.
[0019]
[Means for Solving the Problems]
The present invention includes a disk installation unit in which a plurality of disks are installed in a housing, a moving unit that moves in a disk arrangement direction in the disk installation unit and holds a disk selected from the disk installation unit, In the disk device provided with a drive member that moves the moving unit in the disk arrangement direction,
And is rotatably supported pressing member provided on the housing side, to the pressing member, the sliding portion that presses the moving unit to cross direction crossing the direction of movement is formed, the crossover of the pressing member and biasing member is provided for biasing direction,
In selective movement of said mobile unit to select a disk of the moving the disk array direction in the disk installation section, wherein the mobile unit, sliding the sliding portion while receiving a biasing force from the sliding portion It is characterized by moving.
[0020]
In the present invention, while the moving unit performs the selective movement operation, the moving unit is urged by the pressing member in a direction crossing the same direction, and the moving unit moves while sliding with the pressing member. Therefore, during the selective movement operation of the mobile unit, the load acting on the mobile unit does not vary greatly, and rattle noise of the mobile unit can be effectively prevented.
[0021]
In the present invention, a magazine in which a plurality of disks are stored may be loaded in the disk setting unit, or stored in such a manner that the disks are stacked from the outside in the disk setting unit provided in the housing. It may be done. The moving unit has only a function of holding the disc, and the disc held by the moving unit is moved to, for example, a standby position by the moving unit, and the disc is loaded into the driving means at the standby position. Also good. Alternatively, a disk drive means may be mounted on the moving unit.
[0022]
Further, the pressing member is formed with a pressurizing portion provided to be inclined with respect to the sliding portion, and when the moving unit reaches a standby position at the end of movement in the disk arrangement direction, The moving unit may be urged toward the moving terminal by the pressurizing unit.
[0023]
In the above means, both the rattle noise prevention of the moving unit during the selective movement operation and the rattle noise prevention of the moving unit in the standby position can be performed by the pressing member.
[0024]
For example, the pressing member is rotatably provided with a shaft provided at a position deviating from the end of the sliding portion as a fulcrum, and the moving unit is provided with a convex portion that receives the urging force of the pressing member. It will be what.
[0026]
Next, in the present invention, the two side portions of the mobile unit is freely guided movement to the side plate, respectively, each of the side plates, said drive member inclined cam is formed for moving the moving member, the moving unit is provided so as to be moved in the direction crossing the moving direction, the convex portion is provided in the middle of the side plates in the mobile unit, the sliding portion of the pressing member, wherein the convex portion is one side plate side To be energized.
[0027]
By urging the middle of the left and right support portions of the moving unit with the pressing member, rattle noise of the moving unit can be reliably prevented.
[0028]
The present invention also includes a disk installation unit in which a plurality of disks are installed in a housing, a moving unit that moves in a disk arrangement direction in the disk installation unit and holds a disk selected from the disk installation unit, A side plate that guides both sides of the moving unit in the moving direction, and an inclined cam that moves along the side plate in a crossing direction that intersects the moving direction of the moving unit and moves the moving unit in the disk alignment direction are provided. In the disk device provided with the drive member provided,
At least one side portion of the moving unit is provided with a pair of support portions spaced apart in the cross direction, and each of the support portions slides on the inclined cam of the drive member,
A pressing member that presses the moving unit and an urging member that urges the pressing member are provided outside the interval between the pair of support portions, and the moving unit waits for the moving end in the disk arrangement direction. When the position is reached, the pressing unit urges the moving unit toward the end of movement, and thereby the rotating unit acts on the moving unit with the support portion on the side close to the pressing member as a fulcrum. And the said support part of the side far from the said pressing member is pressed by the said inclination cam toward the reverse direction to the pressing direction of the said pressing member, It is characterized by the above-mentioned.
[0029]
Also in this case, it is preferable that the pressing location where the moving unit is pressed by the pressing member is located in the middle of the both side plates.
[0030]
In the above structure, when the pair of support portions provided in the moving unit is driven up and down by the inclined cam of the driving member, the moving unit is simply urged by one pressing portion of the moving unit at the standby position by the pressing member. The rattle noise can be prevented by securely restraining.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a disk device having a magazine type disk selection function as an embodiment of the present invention, FIG. 2 is a rear view of the disk device viewed from the direction II in FIG. In the case of B, B indicates a case where the moving unit is in the selective movement operation or one of the disks is in the selected drive position.
[0032]
In the disk device 11 shown in FIG. 1, a magazine M storing a plurality of disks is loaded in a disk installation portion provided inside the housing 12. Further, a moving unit U is provided at a position facing the disk installation portion so as to be movable in the vertical direction.
[0033]
A plurality of trays T are stacked inside the magazine M, and are supported so as to be drawn out in the Y1 and Y2 directions in the figure. Each tray T is loaded with a disk D such as a CD (compact disk) or a DVD (digital versatile disk). The moving unit U is provided at a position facing the entrance / exit Ma of the magazine M.
[0034]
The moving unit U records information on the turntable on which the disk D is mounted, a spindle motor that gives the disk D a predetermined rotation, a clamper and a clamp arm that holds the disk D with the turntable, and further on the disk D. Alternatively, disk drive means including a pickup mechanism for reproducing recorded information is mounted (not shown), and these are provided on one movable base 20.
[0035]
Support pins (support portions) 21 and 22 projecting outward (X1 and X2 directions in FIG. 2) are provided on both side surfaces of the movable base 20. Further, a locking pin (convex portion) 16 that protrudes in the Y2 direction is provided on the back surface of the movable base 20.
[0036]
Vertical holes (guide holes) 12a and 12b extending in the height direction (Z direction) are formed in both side plates 12A and 12B of the housing 12, and a long hole 12c is formed in the rear surface 12C in the rear Y2 direction. (See FIG. 2).
[0037]
As shown in FIGS. 1 and 2, drive members 14 that move in the X1 and X2 directions are provided on both side plates 12A and 12B of the housing 12. The drive member 14 is formed with inclined cam holes 14a and 14b having a plurality of stepped portions and inclined with respect to the X1-X2 direction and the moving unit 20 ascending / descending direction (Z1-Z2 direction). The support pins 21 and 22 of the movable base 20 are inserted through the vertical holes 12a and 12b and the inclined cam holes 14b and 14b. The driving member 14 provided on the side plate 12A and the driving member 14 provided on the side plate 12B are driven in opposite directions, and the inclined cam holes 14a and 14b in the driving members 14 and 14 are in the Y1-Y2 direction. It is formed in a symmetrical direction. Further, the locking pin 16 of the movable base 20 is inserted into the long hole 12 c on the back surface 12 </ b> C of the housing 12.
[0038]
As shown in FIGS. 2A and 2B, a presser lever (pressing member) 18 that functions as a pressing member is provided on the inner surface of the back surface 12 </ b> C of the housing 12. The presser lever 18 shown in FIGS. 2A and 2B has a substantially fan shape and is supported so as to be rotatable in the α and β directions shown in the figure around a fulcrum 18a at the lower end (Z2 direction) shown in the figure. A sliding side (sliding portion) 18c is formed on the left edge of the presser lever 18 shown in the figure, and a pressure portion inclined to the sliding side 18c is formed at the lower end of the sliding side 18c. 18b is formed. The fulcrum 18a is provided at the lower end that is disengaged from the sliding side 18c and the pressurizing portion 18b.
[0039]
A latch piece 18d is integrally formed at the end of the presser lever 18 in the Z1 direction shown in the figure. The hooking piece 18d slightly protrudes in the Z1 direction from the upper end of the back surface 12C of the housing 12. A latching portion 12d is formed at the upper end of the back surface 12C, and a biasing means 19 made of a coil spring or the like is installed between the latching portion 12d and the latching piece 18d of the presser lever 18. The presser lever 18 is biased in the β direction shown in the figure. The biasing means 19 may be constituted by a leaf spring.
[0040]
As shown in FIG. 2A, the locking pin 16 provided on the movable base 20 of the moving unit U is movable in the Z1-Z2 direction within the long hole 12c of the rear surface 12C of the housing 12, but the rear surface Inside 12C, it is elastically pressed by the sliding side 18c of the presser lever 18 that has received the urging force of the urging member 19.
[0041]
In the back surface 12 </ b> C shown in FIG. 2, the pressing positions of the presser lever 18 and the locking pin 16 are on both side plates 12 </ b> A and 12 </ b> B and on both sides supporting the moving unit U with the driving members 14 and 14. Located in the middle.
[0042]
Further, as shown in the side view of FIG. 1, the pressing portion between the presser lever 18 and the locking pin 16 is not located within the facing distance between the pair of support pins 21 and 22, and the pressing portion is It is located behind the support pin 22.
[0043]
Hereinafter, a disk device having the above-described vibration preventing function will be described.
In the disk device 11 shown in FIG. 1, when a disk selection command is given by the user, the drive members 14, 14 are moved in the Y1 or Y2 direction by power means such as a motor (not shown). The left and right drive members 14, 14 are driven in opposite directions. When the drive member 14 shown in FIG. 1 is moved in the Y2 direction shown in the figure and the opposite drive member 14 is driven in the Y1 direction, the support pins 21 and 22 protruding from the movable base 20 are Since it moves downward (Z2 direction in the drawing) along the inclined cam holes 14a, 14b of the drive members 14, 14 and the vertical holes (guide holes) 12a, 12b of the side plates 12A, 12B, Is lowered. Further, when the driving member 14 shown in FIG. 1 is moved in the Y1 direction on the opposite side to the Y1 direction in the drawing, the support pins 21 and 22 move the inclined cam holes 14a and 14b and the vertical holes 12a and 12b upward. In order to move in the (Z1 direction in the figure), the moving unit U is raised. The raising / lowering operation of the moving unit U is a selective moving operation for selecting the tray T and the disk D in the magazine M.
[0044]
A plurality of steps are formed in the inclined cam holes 14a, 14b of the drive members 14, 14, and when the support pins 21, 22 of the movable base 20 reach the horizontal portions of the steps, the drive members 14, By stopping the movement of 14, the moving unit U is set to each drive position of a predetermined height in the housing 12 (selection position of any tray and disk in the magazine M). Thereby, in each drive position, the moving unit U can be made to oppose each layer in the magazine M, and the exchange operation | work of the disk D between both is performed reliably.
[0045]
FIG. 2A shows a case where the amount of movement of the drive member 14 shown in FIG. 1 in the Y2 direction is maximum, the support pins 21 and 22 are located at the lowermost position, and the moving unit U is at the standby position P0. When the moving unit U is at the standby position P0, no disk D is selected. 2B shows a state in which the driving member 14 shown in FIG. 1 has moved most in the Y1 direction, and the moving unit U is set at a position Pn where the uppermost disk D in the magazine M can be selected and driven.
[0046]
As shown in FIG. 2A, when the moving unit U is at the standby position P0, the locking pin 16 protruding from the movable base 20 is positioned at the lower edge in the long hole 12c of the back surface 12C of the housing 12. To do. At this time, the pressing portion 18b of the presser lever 18 urged by the urging means 19 in the X2 direction and rotated in the β direction presses the locking pin 16 with the pressing force F1 (however, the pressing force F1 is The direction is F1 and the magnitude is | F1 |), and is pressed toward the end edge of the long hole 12c.
[0047]
At this time, the vertical component (component in the Z2 direction) of the pressing force F1 presses the housing 12 toward the movement end direction (Z2 direction in the drawing) on the back side of the movable base 20, so that the support pin 22 is in the inclined cam hole 14b. While being pressed against the lower edge, the movable base 20 is urged in a direction to rotate counterclockwise in FIG. 1 with the support pin 22 as a fulcrum, and the support pin 21 is pressed against the upper edge of the inclined cam hole 14a. Therefore, the support pins 21 and 22 are pressed against the inclined cam holes 14a and 14b without rattling, and the moving unit U is stabilized in the vertical direction.
[0048]
At the same time, the horizontal component (component in the X2 direction) of the pressing force F1 by the pressing portion 18b of the presser lever 18 presses the movable base 20 against the side plate 12B of the housing 12 in the X2 direction shown in the drawing. Accordingly, the moving unit U located at the standby position P0 is free from rattling in the vertical direction (Z direction) and the horizontal direction (Y direction), and can prevent the occurrence of rattle noise.
[0049]
When the driving members 14 and 14 shown in FIG. 1 move in the Y2 direction, the moving unit U moves upward from the standby position P0. At this time, during the selective movement operation, as shown in FIG. 2B, the locking pin 16 of the movable base 20 disengages the pressing portion 18b of the presser lever 18 and slides on the linear sliding side 18c. The sliding side 18c moves with a pressing force F2 (however, the pressing force F2 is a vector amount consisting of F2 in the direction and | F2 | in the direction) with an urging force in the X2 direction. In particular, the greater the amount of movement in the Z1 direction, the greater the horizontal component of the pressing force F2. Therefore, since the moving unit U moves while being pressed against the side plate 12B of the housing 12 in the X2 direction, there is no backlash during the up-and-down movement, and the generation of rattle noise can be effectively suppressed.
[0050]
Moreover, the moving load of the moving unit U obtained from the urging force of the presser lever 18 when the moving unit U moves up and down does not become excessive.
[0051]
As described above, in the vibration preventing mechanism of the present invention, the presser lever 18 can continuously apply a pressing force to the locking pin 16 protruding from the back surface of the movable base 20, so that the standby position, the drive position, and the selection The play of the moving unit U can be prevented in all states during the moving operation.
[0052]
In the above configuration, as shown in FIG. 2, a biasing force is applied by pulling the presser lever 18 in the X2 direction with a coil spring as shown in FIG. 2. However, for example, a plate spring is used as a biasing means 19 'on the X1 side of the presser lever 18. And an urging force in the X2 direction may be applied to the presser lever 18 by the elastic force of the leaf spring.
[0053]
【The invention's effect】
According to the present invention described in detail above, when the mobile unit performs the selective movement operation, the load applied to the mobile unit is not excessive, and the rattle noise of the mobile unit can be suppressed. In addition, using the same pressing member, rattle noise can be reduced both during the selective movement operation of the moving unit and in the standby state. Furthermore, when the moving unit is in the standby position, the moving unit can be stabilized by simply energizing a part of the moving unit.
[Brief description of the drawings]
FIG. 1 is a side view of a disk device having a magazine type disk selection function as an embodiment of the present invention;
2 shows a rear view of the disk device viewed from the II direction in FIG. 1, where A is when the moving unit is in the standby position, and B is when the moving unit is in the upper drive position.
FIG. 3 is a side view showing a disk device having a conventional magazine type disk selection function;
[Explanation of symbols]
11 Disk device 12 Housing 12A, 12B Side plate 12C Back surface 12a, 12b Vertical hole 12c Long hole 14 Drive member 14a, 14b Inclined cam hole 16 Locking pin (convex part)
18 Presser lever (pressing member)
18b Pressure part 18c Sliding side (sliding part)
19 Biasing means 20 Movable bases 21 and 22 Support pins (support portions)
D Disk M Magazine P0 Standby position U Moving unit

Claims (6)

A disk installation unit in which a plurality of disks are installed in a housing; a moving unit that moves in a disk arrangement direction in the disk installation unit to hold a disk selected from the disk installation unit; and In the disk device provided with a drive member that moves in the disk alignment direction,
And is rotatably supported pressing member provided on the housing side, to the pressing member, the sliding portion that presses the moving unit to cross direction crossing the direction of movement is formed, the crossover of the pressing member and biasing member is provided for biasing direction,
In selective movement of said mobile unit to select a disk of the moving the disk array direction in the disk installation section, wherein the mobile unit, sliding the sliding portion while receiving a biasing force from the sliding portion A disk device comprising a vibration preventing mechanism characterized by moving.   The pressing member is formed with a pressurizing portion that is inclined with respect to the sliding portion. When the moving unit reaches the standby position at the end of movement in the disk arrangement direction, the pressing member is provided. 2. A disk device provided with a vibration preventing mechanism according to claim 1, wherein said moving unit is urged toward said moving terminal by a pressure portion.   The pressing member is rotatably provided with a shaft provided at a position deviating from the end of the sliding portion as a fulcrum, and the moving unit is provided with a convex portion that receives the urging force of the pressing member. Item 3. A disk device comprising the vibration preventing mechanism according to Item 1 or 2. Both side portions of the moving unit are guided movably on the side plates, and the driving members on which the inclined cams for moving the moving members are formed on the side plates in a direction crossing the moving direction of the moving unit . provided so as move, claim the protrusion is provided in the middle of the side plates in the mobile unit, the sliding portion of the pressing member, wherein the protrusion is urged into one of the side plate 3. A disk device comprising the vibration preventing mechanism according to 3. A disk installation unit in which a plurality of disks are installed in a housing, a moving unit that moves in the disk arrangement direction in the disk installation unit and holds a disk selected from the disk installation unit, and both side parts of the moving unit A driving member provided with an inclined cam that moves in the direction intersecting the moving direction of the moving unit along the side plate and moves the moving unit in the disk alignment direction; In the disk device provided with
At least one side portion of the moving unit is provided with a pair of support portions spaced in the direction crossing the moving direction of the moving unit, and each of the support portions slides on the inclined cam of the driving member. And
A pressing member that presses the moving unit and an urging member that urges the pressing member are provided outside the interval between the pair of support portions, and the moving unit waits for the moving end in the disk arrangement direction. When the position is reached, the pressing unit urges the moving unit toward the end of movement, and thereby the rotating unit acts on the moving unit with the support portion on the side close to the pressing member as a fulcrum. A disk device provided with a vibration preventing mechanism, wherein the support portion far from the pressing member is pressed by the inclined cam in a direction opposite to the pressing direction of the pressing member.   6. A disk device provided with a vibration preventing mechanism according to claim 5, wherein a pressing portion for pressing the moving unit by the pressing member is located in the middle of the both side plates.

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