JP2556946Y2 - Disc feeder for disc player - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk player such as an in-vehicle CD player, and more particularly, a disk is held between a pair of holding members, and a roller serving as one of the holding members ensures that the disk is fed and ejected. The present invention relates to a disk player for a disk player.

[0002]

2. Description of the Related Art FIG. 6 is a schematic structural explanatory view showing a disk feeder used in an in-vehicle CD player, FIG. 7 is a perspective view showing a conventional bracket for supporting a feed / discharge roller,
FIG. 8 is a sectional view showing a support portion of a roller shaft, and FIG. 9 is a left side view of the disk feeder in FIG. 6 showing a conventional problem. In the disc feeding device of the disc player shown in FIG. 6, a pair of holding members 1 and 2 for holding the disc D inserted from the insertion opening H of the device main body are provided. One holding member 1 is a feed / discharge roller, and the other holding member 2 is a pinch roller. Disk D by both rollers 1 and 2
Is held, the disk D is fed into the disk drive unit M by the rotational power of the feed / discharge roller 1, and the disk D that has been reproduced is discharged from the disk drive unit M to the insertion slot H.

The feed / discharge roller 1 includes a roller bracket 5
It is rotatably mounted on. In the roller bracket 5, as shown in FIG. 7, support pieces 11a and 11b arranged in parallel at a predetermined distance and a connecting piece 12 for connecting the two support pieces are integrally bent by a metal plate. A mounting hole 10 is formed at the tip of each of the support pieces 11a and 11b. A resin bush 15 is fitted in the mounting hole 10, and the roller shaft 3 is rotatably supported by the bush 15. . In addition, the bracket 5 and the bush 15
A driven gear 4 is fixed to an end of the roller shaft 3 protruding outward from the driven shaft 4. Further, both support pieces 11a, 11b
A hole 13 is formed at the rear end of the device, and the hole 13 is rotatably supported by a shaft 6 fixed to a chassis of the device main body.

As shown in FIG. 6, a spring 14 is attached to the tip of the support piece 11a, and when the disk D is fed into the disk drive M and when the disk D is ejected from the disk drive M. Then, the feed / discharge roller 1 is raised to a position where the disk D is held, and the feed / discharge roller 1 is pressed against the disk D by the elastic force of the spring 14. A drive gear 9 driven by a motor is supported on the shaft 6, and an intermediate gear 7 and an intermediate drive gear 8 integral with the intermediate gear 7 are rotatably supported on a support piece 11 a of the roller bracket 5. .

In the above-mentioned feeding device, when the disk D is fed into the disk drive unit M and when the disk D is discharged from the disk drive unit M, the feed / discharge roller 1 holds the disk D by the rotation of the roller bracket 5. The disc D is held between the feeding / discharging roller 1 and the pinch roller 2 by the elastic force of the spring 14. At the same time, the power of a motor (not shown) is
To the intermediate gear 7 and the intermediate drive gear 8, from the intermediate drive gear 8 to the driven gear 4, and the feed / discharge roller 1 is rotated clockwise or counterclockwise to rotate the disk D
Is transported.

[0006]

However, since the supporting pieces 11a and 11b and the connecting piece 12 are formed by bending a metal plate, warpage at the time of bending, and furthermore, a positional error of the hole 13 and the like. There is a case where the disc D is not evenly clamped between the feeding / discharging roller 1 and the pinch roller 2 due to an error in the mounting position of the shaft 6 to the chassis of the device main body. When the feed / discharge roller 1 is driven in this state,
An even feeding force does not act on the disk D.

For example, as shown in FIG. 9, when the illustrated left end of the roller bracket 5 is warped downward, when the feed / discharge roller 1 rises,
Is strongly pressed against the disk D, so that an even feeding force does not act on the disk D. In particular, as shown in FIG. 9, when the spring 14 is applied only to one side of the roller bracket 5, for example, only the support piece 11a, the pressing force of the feed / discharge roller 1 against the disk D at the left end in the drawing is extremely large. In the worst case, the pressing force of the feeding / discharging roller 1 against the disk D at the left end in the figure disappears at all. The urging force of the spring 14 is F
In this case, the right and left ends of the feed / discharge roller 1 should originally come into pressure contact with the disk D with a force of F / 2, but in the worst case, only the right end in the drawing of the roller 1 The disk D is pressed by the force of Such a difference in the pressure contact force is the same even if a spring for pressure contact is provided on each of the support pieces 11a and 11b on both sides.

The present invention solves the above-mentioned conventional problems, and provides a disk feeder for a disk player in which a disk is evenly held by a holding member including rollers, and the operation of feeding and discharging the disk can be reliably performed. It is intended to do so.

[0009]

Means for Solving the Problems The present devised, at least one pair of clamping members are provided a roller, disk is fed into the disk drive unit by the rotational force of the roller is sandwiched these clamping members the disk feeding device of the disc player, the front bellflower support member to one end portion
In the direction where the other end approaches or separates from the disk as a fulcrum
A bracket for supporting the bracket so as to be movable, a biasing member for biasing the bracket in a disk clamping direction, and a biasing member provided between the other end of the clamping member and the bracket.
At the end with an elastic force smaller than the urging force of the urging member
And repression member elastically presses the disc clamping direction, is characterized in that is provided.

[0010]

In the above means, one end of the holding member such as a roller is movably supported by the bracket, and the other end of the bracket is urged toward the disk by an elastic member. Therefore, for example, even if the bracket is warped and the holding member is in one-side contact with the disc, the one-side contact state is corrected by the deformation of the elastic member provided on the bracket, and the holding member is substantially attached to the disc. Abut evenly. Therefore, a uniform and reliable feeding force is given to the disk.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing a main part of a disc feeder in a vehicle-mounted CD player according to an embodiment of the present invention, and FIG. 1 (a) is a front view seen from the direction of a disc insertion slot, and FIG. (B) is a view in the direction of arrow B in FIG.
FIG. 2 is a perspective view showing a roller bracket and a roller, FIG. 3 is a perspective view showing one bush, and FIGS. 4 and 5 are views for explaining the operation of the disc feeder in the disc player according to the present invention. 2A is a front view as viewed from the direction of the disk insertion slot, and FIG. 2B is a view as viewed in the direction of arrow B in FIG. 2A.

As shown in FIG.
Are support pieces 21a and 21b and connection pieces 2 made of a metal plate.
2 is formed by bending integrally. The tip of the support piece 21b formed on the left side in FIG.
A hexagonal elongated hole 23 extending in the pressure contact direction is formed, and a hole 13 into which the shaft 6 fixed to the chassis of the device main body is inserted is formed at the rear end of the support piece 21b.

A hexagonal bush 24 is inserted into the elongated hole 23 as shown in FIG. This bush 24
As shown in FIG. 1B, the roller shaft 3 and the slot 23
Are formed so as to have a predetermined gap (movable allowance) G in the pressing direction or non-pressing direction of the disk D, and can slide up and down in the long hole 23.
This gap G is set in consideration of all the tolerances such as the "warp" of the bracket 25 and the positional deviation of the shaft 6, with a slight margin added to its accumulated value. A roller shaft 3 is provided at the tip of the support piece 21a on the right side in FIG.
A mounting hole 10 into which a resin bush 15 on which the shaft 6 is supported is formed, and a hole 13 into which the shaft 6 is fitted is formed at the rear end.
Are formed.

Both ends of a roller shaft 3 on which a feed / discharge roller 1 for applying a transfer force to the disk D is rotatably supported are fitted and fixed to respective bushes 15 and 24. Alternatively, when the feed / discharge roller 1 is fixed to the roller shaft 3, both ends of the roller shaft 3 are rotatably supported by bushes 15 and 24, respectively. One hexagonal bush 24 is vertically movably supported in a long hole 23 formed in the support piece 21b, so that the roller shaft 3 is supported by the bush 15 as a fulcrum.
5 can be relatively tilted. Further, a leaf spring 26 is fixed to the support piece 21b,
The hexagonal bush 24 is urged upward in the elongated hole 23, that is, in the direction of the disk D by the leaf spring 26.

As shown in FIG. 6, the roller bracket 25 is swingably supported by the main body of the apparatus about the shaft 6 and the elastic force of the spring 14 when the feed / discharge roller 1 is raised. Feeding and discharging roller 1 and pinch roller 2
Then, the disk D is nipped, and the disk D is transported by the rotational force of the feed / discharge roller 1.

Next, the disk D in the embodiment having the above configuration
Will be described. [When there is no warpage of the roller bracket or the like] When the disc D is being reproduced, the roller bracket 25 and the feed / discharge roller 1 are moved to a position lowered to a position shown by a two-dot chain line in FIG. Being restrained. At this time, as shown by the broken line in FIG. 1B, the hexagonal bush 24 is always at the upper limit position of the long hole 23 (the uppermost position in the pressing direction of the disk D) by the leaf spring 26. Has been energized.

When the disk D is fed into the disk drive M and when the disk D is ejected from the disk drive M, the restraint of the roller bracket 25 is released, and the feed / discharge roller 1 is moved to a position where the disk D is nipped. The roller bracket 2 is moved upward by the elastic force of the spring 14.
5 is urged in the disk holding direction. At this time, the left end of the feed / discharge roller 1 urged by the leaf spring 26 comes into contact with the disk D, and then the right end is pressed against the disk D. When the pinch roller 2 and the roller bracket 25 are in a parallel state, the bush 24 presses the leaf spring 26 in the non-pressing direction (downward), and the bush 24 is pushed back to the center of the elongated hole 23.

A feed / discharge roller 1 and a pinch roller 2
Thus, the disk D is evenly held in a well-balanced manner. For example, when the urging force of the spring 14 at this time is F and the urging force of the leaf spring 26 is F / 2, the left end in the drawing of the feeding / discharging roller 1 is pressed against the disk D with the force of F / 2, and the feeding / discharging is performed. The right end in the figure of the roller 1 is pressed against by a force of F / 2 which is a value obtained by subtracting the urging force of the leaf spring 26 from the urging force of the spring 14. Therefore, the left and right ends of the disk D are pressed by the same force,
It is transferred with an even clamping pressure.

[When the support piece 21b side of the roller bracket 25 is inclined in the non-pressing direction] Due to the warpage of the roller bracket 25 and the displacement of the shaft 6, the roller bracket 25 is exaggerated as shown in FIG. When the support piece 21b on the left side of the roller 25 is inclined downward in the drawing, when the disc D is sandwiched between the feeding and discharging roller 1 and the pinch roller 2, a hexagonal bush is formed at the left end of the feeding and discharging roller 1 in the drawing. 24 is pushed upward by the elastic force of the leaf spring 26, and the left end of the feed / discharge roller 1 is pressed against the disk D regardless of the warpage of the roller bracket 25. 4A and 4B, the roller bracket 25 is used.
Is exaggerated, but in the actual device, the slot 2
The movable margin G of the bush 24 upward in FIG. 3 is equal to or greater than the accumulated value of all the tolerances, so that the bush 24 does not hit the upper edge of the elongated hole 23, The plate spring 26 is pressed against the disk D by the elastic force.

Since the amount of movement of the bush 24 in FIGS. 1B and 4B is small, the elastic force of the leaf spring 26 in the state of FIG. Is almost the same as F / 2. Therefore, also in this case, both the left and right ends of the feed / discharge roller 1 are pressed against the disc D with a force of F / 2, and the disc D is transferred with an even clamping pressure of the feed / discharge roller 1.

[When the support piece 21b of the roller bracket 25 is inclined in the pressing direction] The roller bracket 25 is exaggerated as shown in FIG. 5A due to the warpage of the roller bracket 25 and the displacement of the shaft 6. When the disk D is sandwiched between the feed / discharge roller 1 and the pinch roller 2, the hexagonal bush 24 is formed at the left end of the feed / discharge roller 1 when the support piece 21b on the left side of FIG. , And moves downward in opposition to the elastic force of the leaf spring 26. Therefore, the left end of the feed / discharge roller 1 is pressed against the disk D regardless of the warpage of the roller bracket 25 or the like. FIGS. 5A and 5B also show the inclination of the roller bracket 25 in an exaggerated manner.
Actually, the bush 24 does not hit the lower edge of the long hole 23, and the left end in the figure of the feed / discharge roller 1 is pressed against the disk D by the elastic force of the leaf spring 26.

Since the downward movement of the bush 24 in FIG. 5B is small, the elastic force of the leaf spring 26 in the state shown in FIG. 5B is substantially the same as that in FIG. 1A. And F / 2. Therefore, also in this case, the left and right ends of the feed / discharge roller 1 are both pressed against the disc D by the force of F / 2,
The disk D is transported by the uniform clamping pressure of the feed / discharge roller 1.

In the above embodiment, the movable side of the pair of holding members is the feed / discharge roller 1 to which the driving force is applied, and the upper fixed side is the pinch roller 2, but instead of the upper pinch roller 2. A shoe made of a synthetic resin or the like may be provided. The upper side may be a feed / discharge roller to which a driving force is applied, and may be a pinch roller in which a roller supported by the bracket 25 moves freely.

In the illustrated embodiment, only the right end of the bracket 25 is urged upward by the spring 14, but both right and left ends of the bracket 25 may be urged upward by the spring. In this case ,
The total urging force of the spring that pulls the
F, a leaf spring 26 provided on one end side of the bracket 25
If the elastic pressure of the roller is F / 2, the left and right ends of the feeding and discharging roller 1
It is evenly pressed against the disk D in each F / 2 of the force
You.

Furthermore, the present invention is not limited to a disc player that inserts and reproduces a single disc, but a magazine containing several (for example, three) discs is mounted on a mounting unit, and a magazine for the player housing is provided. Any of these several discs is selected and exchanged inside, and is used in a magazine storage type CD player or the like which reproduces the disc or a disc changer in which a magazine containing six to nine discs is mounted. It is feasible.

[0026]

As described above, according to the present invention, regardless of the warpage of the bracket, the disc is always held by the holding member and transported by a uniform force.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a configuration of a main part of a disc feeder in an in-vehicle CD player according to an embodiment of the present invention; FIG.
(B) is an arrow view in the B direction in (a).

FIG. 2 is a perspective view showing a roller bracket and a roller.

FIG. 3 is a perspective view showing one bush.

4A and 4B are diagrams for explaining the operation of the disc feeder, wherein FIG. 4A is a front view as viewed from the direction of the disc insertion slot, and FIG. 4B is a B direction arrow in FIG. FIG.

5A and 5B are diagrams for explaining the operation of the disk feeder, wherein FIG. 5A is a front view seen from the direction of the disk insertion slot, and FIG. 5B is a direction B in FIG. It is an arrow view.

FIG. 6 is an explanatory diagram showing a configuration of a disk feeder used in a conventional in-vehicle CD player.

FIG. 7 is a perspective view showing a bracket for supporting a conventional feed / discharge roller.

FIG. 8 is a cross-sectional view showing a support portion of the roller shaft.

FIG. 9 is a left side view of the disk feeder in FIG. 6 showing a conventional problem.

[Explanation of symbols]

 Reference Signs List 1 feed / discharge roller 2 pinch roller 3 roller shaft 4 driven gear 5 roller bracket 6 shaft 7 intermediate gear 8 intermediate drive gear 9 drive gear 14 spring 23 long hole 25 roller bracket 24 bush 26 leaf spring D disk

Claims (1)

(57) [Scope of request for utility model registration] [Claim 1 wherein at least one pair of clamping members are provided a roller, a disc feeder disc player to be sent to the disk drive unit by the rotational force of the disk is held in these clamping members the roller,
The other end de front bellflower support member as a fulcrum at one end
A bracket for supporting the bracket so as to be movable toward and away from the disk, a biasing member for biasing the bracket in the disk clamping direction, and a gap between the other end of the clamping member and the bracket. The end is provided by the biasing member.
Elastic pressure in the direction of holding the disc with elastic force smaller than the urging force
Disc feeder disc player, characterized by repression and member, is provided that.