JPH0490163A - Disk loading device - Google Patents

Abstract

PURPOSE:To attain sure disk loading by a simple constitution by providing this disk loading device with a disk guide plate having the 1st and 2nd guide parts, a disk pressing means and a disk guide means. CONSTITUTION:When a small diameter disk is inserted, the disk is inserted into a center part without almost opening a disk guiding member 6 or 7, drawn into a disk driving roller 39 while being pressed to the upward inclined face 36 of a disk guide plate 31, abutted upon disk guide pins 40, 41, and then positioned on a turn table 3. In the case of inserting a large disk, the disk is inserted while almost uniformly expanding the disk guide members 6, 7 by the head face of the disk, drawn in accordance with the rotation of the roller 39, advanced on the center by guide walls 37, 38 in the horizontal direction, and guided by the main face of the plate 31 and mounting parts 32, 33 in the peripheral part, so that the disk can be inserted in the horizontal direction or downward. Consequently, sure disk loading operation can be attained by the simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a disc loading device such as a CD player.

2. Description of the Related Art In recent years, disc loading devices have been widely used for audio and video.Furthermore, disc sizes have become more diverse, and discs of various sizes have been supported.Audio CDs In addition to the standard size CD of 12 cm in diameter, CDs of a small size of 8 cm in diameter are becoming popular in disc loading devices for players, and compatibility is progressing.

The conventional disk loading device mentioned above will be explained below with reference to the drawings.

FIG. 11 shows a top view of essential parts of a conventional disc loading device. In FIG. 11, 1 is a CD player, 2 is a top plate attached to the top surface of the CD player 1, and 3 is a turntable on which a CD is placed and rotated. Reference numerals 4 and 5 indicate guide arms provided at both ends of the front disk insertion slot, and reference numerals 6 and 7 indicate guide members provided at the ends of the guide arms 4 and 5. 8 and 9 are guide arms 4゜5
The engagement pin 10.11 provided on the guide arm 4
, 5 are rotational support shafts, 12 is an interlocking rod whose both ends are engaged with the rotational support shaft 10.11, and 13.14 is a notch provided in the interlocking rod 12 through an engagement pin 8.9. The guide arms 4 and 5 are engaged and interlocked with each other. Numeral 15 is a spring that biases the interlocking rod 12 to the right, and 16 is a disk guide plate on the under surface of which a disk to be inserted and removed slides. A disk drive roller 17 rotates while pressing the disk being inserted and removed against the disk guide plate 16.

18.19 is a disc stopper arm provided at the rear of the CD player 1, and 20.21 is a disc stop pin provided at the end of the disc stopper arm 18.19. Reference numerals 22 and 23 indicate pivot shafts of the disc stopper arms 18 and 19. In the figure, a dashed line indicates a standard type disk (large diameter disk), and a chain double dotted line indicates a small disk (small diameter disk).

The operation of the disc loading device configured as described above will be described below.

First, when a small-diameter disk, that is, 8 csICD, is inserted, the outer circumferential end surface of the small-diameter disk pushes the guide members 6, 7 slightly open, and the guide members 6, 7 bias the spring 15 with a biasing force to guide it approximately to the center. . As the small-diameter disk is further inserted, the disk is sandwiched between the disk drive roller 17 and the disk guide plate 16, and the outer peripheral end surface of the small-diameter disk comes into contact with the disk stop pins 20 and 21, positioning it and allowing it to be inserted. finish. Also, a large diameter disk, i.e. 12
When inserting the CAN disc, the guide members 6 and 7 are opened wide and the insertion of the large diameter disc is detected. By opening the stopper arm 18.19 or the like, the disk stop pin 20.21 is moved to a position where it does not interfere with the insertion of the large diameter disk.

Problems to be Solved by the Invention However, in the above configuration, the disk stop pins 20 and 21 must be moved via an interlocking mechanism according to the disk size detected by the disk guide arms 18 and 19, which makes the disk loading structure difficult. The problem was that it was complicated.

Also, when a small diameter disc is intentionally inserted off center, the disc guide arms 18 and 19 open wide in the same way as when inserting a large diameter disc, and the disc stop pin 20.
21 may move, making it impossible to position the small disk at the correct position.

Means for Solving the Problems In order to solve the above problems, the disc loading device of the present invention includes: a first guide portion that slides on the outside of the large-diameter disc and guides insertion of the large-diameter disc in a first direction; a disk guide plate having a second guide portion located inside and in sliding contact with the small-diameter disk and guiding the insertion of the small-diameter disk in a second direction different from the first direction; and a disk that presses the disk against the disk guide plate. It is configured to have a pressing means, and is equipped with a disk guide means for fixing a disk guide member that narrows the width of the disk insertion opening when a small diameter disk is inserted.

Effects of the present invention With the above-described configuration, the width of the insertion opening changes depending on the diameter of the disk, and since different diameters require different insertion directions, small-diameter disks are guided so that they are inserted correctly from the center. Small diameter discs can be positioned correctly with a simple configuration.

Embodiment Hereinafter, a disc loading device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a top view of a disc loading device in an embodiment of the present invention. In Figure 1, 24
．． 25 is a connecting rod, and 26.27 is an engaging pin that engages the disk guide arms 4, 5 and the connecting rods 24.25, respectively. 28 is a connecting pin that connects the other ends of the connecting rods 24 and 25, and 29 is a guide groove that is provided facing the disk insertion direction of the top plate 2I and guides the connecting pin 28. Reference numeral 30 is hung by a spring on the connecting pin 28 or a connecting rod near the connecting pin 28, and the guide arm 4 is attached so that the distance between the disk guide members 6°7 is approximately equal to that of the small diameter disk.
, 5 are energized. The disk guide means includes disk guide members 6 and 7, guide arms 4 and 5, connecting rods 24 and 25, a connecting pin 28, and a spring 30. 31
3 is a disc guide plate, 32 and 33 are mounts provided at the left and right ends of the disc guide plate 31;
4.35 is an inclined surface connected to the mount portion 34.35, and constitutes a guide surface for guiding the large diameter disk downward. 36
is an inclined surface provided inside the disk guide plate 31, and constitutes a guide surface for guiding the small diameter disk upward. Reference numerals 37 and 38 are guide walls provided at both ends to restrict the displacement of the large-diameter disk in the left-right direction; 39 is a disk drive roller that rotates while pressing the disk to be inserted and removed toward the disk guide plate 31; The width is narrower than the diameter of the small diameter disc. Numerals 40 and 41 are disk guide pins for positioning the insertion of small disks, which are symmetrically fixed slightly behind the top plate 2.

FIG. 2 is a bottom view showing the assembled state of the top plate 2, in which the dash-dot line indicates the large-diameter disk at the end of insertion position, and the dash-dotted line similarly indicates the small-diameter disk.

9 and 10 show side sectional views of a disk loading device according to an embodiment of the present invention.

A disc loading device according to an embodiment of the present invention configured as described above will be described below with reference to the drawings.

First, in Figure 1, a small diameter disk is inserted (and
Since the distance between the disc guides 6, 7 is approximately equal to the diameter of the small disc, the small disc can be inserted centrally without opening the disc guide 6 or 7 much.

Furthermore, even if an attempt is made to insert the disc guide arm 6 or 7 intentionally off center, the force acts in the direction of opening (the force is applied to the connecting rods 24, 25 through one of the disc guide arms 4, 5). One side will be pushed to the right or left,
The angle θ formed by the pressing direction of the connecting pin 28 is the friction angle θ. (θ
. = tan−'μ μ: coefficient of friction at that location)
If it is within this range, the connecting pin 28 only hits the wall surface of the lower end of the guide groove 29, and the disk guide arm 4 or 5 is prevented from rotating (see FIG. 3). That is, the disk guide member 6
．． 7 is always energized by a spring 30 so that the spacing is almost equal to the diameter of the small diameter disc, so it remains in a fixed state, and the effect is essentially the same as when the disc insertion slot is narrowed specifically for small diameter discs. can get.

The small-diameter disk inserted from the center in this manner is pulled in by the disk drive roller 39 while being pressed against the upwardly inclined surface 36 of the disk guide plate 31, and is positioned on the turntable 3 by contacting the disk guide pins 40 and 41. (See Figure 9).

When inserting a large-diameter disk, as long as the disk guide members 6 and 7 are inserted while being pushed out almost evenly at the tip surface of the disk, the amount of rotation of the disk guide arms 4 and 5 is equal, and therefore the left and right connecting rods 24 Since the connecting pin 28 moves along the guide groove 29 as long as the amount of movement of .25 is the same, the disk can be inserted smoothly. The large disk inserted in this way is drawn in as the disk drive roller 39 rotates, and moves along the center in the left and right direction by the guide walls 37 and 38, and the outer periphery is guided by the disk guide plate 31.
The disc is guided by the main surface of the disc and the mount parts 32 and 33, and can be inserted horizontally or downward, so it can be inserted all the way without contacting the disc guide pins 40 and 41, and will come into contact with the rear wall of the top plate 2. position and finish insertion (first
(See figure 0).

FIG. 3 is a top view showing the movement of the disk guide arm when a large-diameter disk is inserted, and the dotted line indicates when the large-diameter disk passes through the maximum diameter portion. θ indicates the pressing direction of the connecting pin 28 when guiding the small diameter disk, and it is sufficient that it is within the friction angle.

FIG. 4 is a diagram showing the relationship between the guide groove 29 and the connecting pin 28, when they are within the friction angle, and the spring force acting on the connecting pin 28 when the connecting pin 28 does not touch the groove end is shown in FIG. As shown, this is when the disc is resting against the notch of the disc guide plate. Figures 5 to 7 are examples of the locking method when the pressing direction of the connecting pin is greater than the friction angle and locking by friction is not possible. Figure 5 shows a circular engagement recess that is slightly larger than the groove width. However, when the connecting pin 28 moves in a direction intersecting the groove, it is locked, so that when a small diameter disk is inserted, it can be restricted to the center. 42 is a circular engagement recess. In FIG. 6, the shape of the engaging recess is diamond-shaped. 43 indicates a diamond-shaped engagement recess. The above method corresponds to two sizes of disks, large and small, and the guide members 6 and 7 guide the small-diameter disk to the center, and for the large-diameter disk, the center can be set in the space on the receiving side of the device as before. The opening of the guide member 6.7 may be restricted at the other end of the guide groove 29. FIG. 7 shows an embodiment of the central regulation that can accommodate three types of disks: large, medium and small. 44 is an engagement recess for small diameter disks, and 45 is an engagement recess for medium diameter disks.

Note that by setting the width of the disk drive roller 39 to approximately one-half or less of the diameter of the large-diameter disk, the small-diameter disk can be reliably aligned with the upwardly inclined surface 36. Furthermore, if the width of the disk drive roller 39 is made small as described above, the disk can be warped in an inverted U-shape for large-diameter disks. In addition to preventing damage, since the two fixed protrusions move away from the disk guide pins 40 and 41, it is possible to prevent a malfunction in which a large diameter disk comes into contact with the disk guide pins 40 and 41.

FIG. 8 is a front view showing an inverted U-shaped warpage of a large diameter disk. Note that this inverted U-shaped warpage generating mechanism is effective not only in compatible brayer but also in general brayer exclusively for 12 cm cD.

As described above, according to the present embodiment, there is a first guide part that is in sliding contact with the large-diameter disk on the outside and guides the insertion of the large-diameter disk in the first direction, and a first guide part that is in sliding contact with the small-diameter disk and on the inside of the first guide part that is in sliding contact with the large-diameter disk and guides the insertion of the large-diameter disk in the first direction. a disk guide plate having a second guide portion for guiding the insertion in a second direction different from the first direction; a disk pressing means for pressing the disk against the disk guide plate; To provide a disk loading device capable of handling disks of different sizes and diameters, which provides reliable disk loading operation with a simple configuration by providing a disk guide means for fixing a disk guide member that narrows the width of the disk insertion slot. realizable.

In the embodiment, the disk guide members 6 and 7 are brought into elastic contact with the side wall of the notch of the disk guide plate 31 by the force of the spring 30 to regulate the distance between the disk guide members 6 and 7. By doing so, it is possible to eliminate play between the interlocking members and prevent each member from coming loose during a performance or the like. Therefore, it is not limited to this,
If necessary, the distance between the disk guide members 6, 7 may be regulated by the length of the guide groove 29 or the like. Also, book splash 3
0 acts on the connecting pin 28 or its vicinity to form a toggle mechanism, it is possible to reduce changes in the rotational force of the disc guide arms 4 and 5 due to rotation.

Moreover, the mount parts 32 and 33 are provided to increase the difference between the first direction and the second direction and to obtain reliable operation, and are designed to adjust the amount of inclination of the second guide part and the disc guide plate. A large-diameter disk support with a main surface can form the first guide portion depending on the size, shape, etc. of the surface. In this case, the inclined second guide serves as a central recess.

Effects of the Invention As described above, the present invention includes a first guide portion that slides on the outside of the large-diameter disk and guides insertion of the large-diameter disk in the first direction;
a disk guide plate having a second guide portion located inside the disk guide plate that slides in contact with the small diameter disk and guides insertion of the small diameter disk in a second direction different from the first direction; and a disk guide plate that presses the disk against the disk guide plate. To realize a disk loading device that can obtain a reliable loading operation with a simple configuration by providing a disk pressing means and a disk guide means for fixing a disk guide member that narrows the width of a disk insertion opening when a small diameter disk is inserted. be able to.

[Brief explanation of drawings]

FIG. 1 is a top view of the disc loading device according to the embodiment of the present invention, FIG. 2 is a bottom view of the top plate of the disc loading device of the present invention, and FIG. 3 is an operation of the disc loading device according to the embodiment of the present invention. 4, 5, 6 and 7 are plan views of the guide groove, and FIG. 8 is a front view of the main parts of the disc loading device according to the embodiment of the present invention. 9 and 10 are side sectional views of the disc loading device of the present invention, and FIG. 11 is a top view of the conventional disc loading device. 2...Top plate, 3...Turntable,
4, 5... Guide arm, 6, 7 Old... Disc guide member, 24.25... Connecting rod, 2
8... Connection pin, 29... Guide groove, 3
o... Spring (guide arm biasing means), 31.
...Disc guide plate, 32.33...
...Mount part (first guide part), 36...
Inclined surface (second guide part), 39. Old... Disk drive roller (disc pressing means), 40. 41... Disc guide pin. Name of agent: Patent attorney Shigetaka Awano 1 person? Ten version number 1, number 1, number 1

Claims (1)

[Scope of Claims] (1) A first guide portion provided at both ends that slides against the large diameter disk and guides insertion of the large diameter disk in a first direction; and a first guide portion provided inside the first guide portion. a second guide portion for inserting and guiding a small-diameter disk in a second direction; and a disk pressing means for pressing the large-diameter disk or the small-diameter disk against the disk guide plate. A disc loading device characterized by: (2) A disk guide pin fixed on the top plate constituting the bottom surface and guided in the second direction in front of the insertion amount regulating position of the large diameter disk to regulate the insertion amount of the small diameter disk is symmetrical. 2. The disc loading device according to claim 1, wherein the disc loading device is disposed at a disc loading device. (3) The disk loading device according to claim 1, wherein the disk pressing means is formed by a disk drive roller having a width narrower than the disk guide plate. (4) The disk loading device according to claim 1, further comprising disk guide means for guiding the small diameter disk to the center in the vicinity of the disk insertion slot. (5) The disk loading device according to claim 4, wherein the disk guide means fixes a disk guide member that narrows the width of the disk insertion opening when a small-diameter disk is inserted. (6) a pair of guide arms rotatably supported at both ends of the disc insertion slot; a disc guide member formed at the end of the guide arm to regulate the circumferential end surface of the disc to be inserted; and one end a pair of connecting rods that are connected to the guide arm and whose other ends are connected to each other; a connecting pin that connects the connecting rods; a guide groove that guides the connecting pin in the disk insertion direction; A disc loading device characterized by comprising a guide arm biasing means biasing the center of an insertion slot. (7) When a force is applied to move the guide member outward in a state where no disk is inserted, the pressing direction of the connecting pin against the wall surface of the guide groove is within a friction angle with respect to both wall surfaces of the guide groove. The disc loading device according to claim 6. (8) The disc loading device according to claim 6, wherein an engaging recess is formed at an arbitrary location in the guide groove to allow movement of the connecting pin in a direction intersecting the direction of the groove. (9) The disk loading device according to claim 6, wherein the guide arm biasing means is formed of a spring and forms a toggle mechanism at or near the connecting pin.