JPS60160061A - Disk loading device of disk player - Google Patents

Abstract

PURPOSE:To load and unload a disk smoothly and assuredly by forming a horizontal guide groove and a groove which guides the direction orthogonal to the disk surface to a disk guide arm. CONSTITUTION:Disk guide arms 19 and 19' are supported rotatably inward and outward at the front of a chassis 12. While the 1st guide grooves 19a and 19a' which guide the horizontal direction of the disk are formed to the inner side of the arms together with the 2nd guide grooves 19b and 19b' set under the grooves 19a and 19a' to guide the direction orthogonal to the disk surface. The disk loaded through a loading slot is guided horizontally first by the grooves 19a and 19a' and moved down along the grooves 19b and 19b' at a descending position. Thus a disk loading action is over. In such a way, the disk can be loaded and unloaded in an extremely smooth and assured way.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disc loading device for a player for discs, such as digital audio compact discs.

Background Art and Problems Compact disc players (hereinafter referred to as CD players) use a built-in carrier system to load discs, for example, a system in which the disc is placed on a pull-out disc table and loaded. However, this method requires a space in front of the player body to pull out the disc table, which causes space problems, especially when the CD player is installed in a car etc. It is difficult for the CD player to protrude in a narrow space such as the inside of a car. There was also the problem that inserting and ejecting a disc was not smooth.

OBJECTS OF THE INVENTION In view of the above, the present invention provides a disk loading device for a disk player that can reliably and smoothly insert, transfer, and eject a disk from a disk spindle position.

SUMMARY OF THE INVENTION A disk loading device according to the present invention includes a pair of rotationally biased disk insertion guide arms, a first guide groove for guiding horizontal insertion of a disk into the insertion guide arm, and a first guide groove continuous with the first guide groove. , forming a second guide groove that allows the disk to move in a direction perpendicular to the surface of the disk;
and a disk transfer device for transferring the disk from the first horizontal position to the second horizontal position, and the insertion guide arm is configured to cut off the biasing of the disk by the insertion guide arm when the disk is in the second horizontal position. A stopper is provided protrudingly on the chassis to be pivoted, and when the disk is in the first horizontal position, the pair of insertion guide arms moves the disk into the second horizontal position.
A stopper is provided for restricting movement of the disk in the horizontal position direction when the disk is transferred to the second horizontal position, and the disk is further urged from the second horizontal position to the horizontal position. The disc is configured to be guided by a second guide groove and a stopper when being transferred to the position where it is placed on the spindle, so that loading, transferring, and ejecting of the disc can be carried out reliably and smoothly. It is.

Embodiment Hereinafter, an embodiment in which a disc loading device according to the present invention is applied to a disc loading mechanism of a compact disc player will be described with reference to the drawings.

In the figure, (1) shows the case of the compact disc,
A frame-shaped panel (4) equipped with an insertion slot (2) for the disc D and each scanning button (3) is fitted on the front side, and an opening/closing lid (5) is fitted inside the insertion slot (2) for disc D. The opening/closing lid (5) is mounted so that it can be pushed open by pressing D, and this opening/closing lid (5) is opened when an eject operation is performed.

The chassis (12) is mounted inside the box (5) by the legs (11).
is fixed horizontally, a disk spindle (13) is attached to the center of this chassis (12), and a cut groove (14) is formed from the rear edge toward the center, that is, toward the disk spindle (13). An optical pickup (15) is moved along the kerf (14) of the lever. Also, the rear edge of the chassis (12) has an n-shaped chucking arm (
16) is pivotally supported so that it can be raised and lowered, and a constant spring (17)
The chucking arm (
The spindle (13) is located in the center of the front side (16a) of the
) A chucking disk (18) is rotatably attached to the chucking disk (18).

Furthermore, a pair of guide arms (19) and (19') for guiding the disk D are attached to the front part of the chassis (12) so as to be rotatable in the inward and outward directions.

The guide arms (19), (19') have first guide grooves (19a) on the inner surface that guide horizontal insertion of the disk D.
), (19a') and this guide groove (19a), (19a
Continuously below the disk surface, there are second guide grooves (19b) and (1
9b') is provided. That is, the first guide groove (19
a), "The tip of (19a') is the guide arm (19)
, (19') are formed in a tapered manner to widen toward the tip edge side, and the second guide grooves (19b), (19b')
Guy Fjl! A first guide fi (19a) that is continuous on the i half side of (19a) and (19a'),
(19a'), and the front half is a sloped surface (19b) that is continuous with the first guide @ (19a), (19a').
t), (19bt'), the upper surface side of the rear half is inclined (1
9b2) and (19b2'). The rear portions of the guide arms (19), (19') are bent inward, and at the bent portions are supported by shaft pins (20), (20') set on the chassis (12). Spring (22), (22') is stretched between the rear end and pins (21), (21') set on the chassis (12) corresponding to the outside of this rear end. A locking piece (23), (
Both guide arms (19
) and (19') are arranged so that their tip ends face each other in an inverted V-shape with an interval narrower than the diameter of the disk D.

(24) is a loading mechanism provided in the rear half of the chassis (12), and a sliding body (26) engages with a guide rail (25) fixed to the chassis (12) in the front-back direction so as to be movable in the front-back direction. A disc D holding body (27) is attached to this sliding body (26). The clamping body (27) has an upper clamping member (27a) and a lower clamping member (
27b), and the upper holding member (27a) is a sliding body (
26) is rotatably supported upward from a horizontal position by a front bearing (26a), and is always urged to rotate in the horizontal direction by a spring (28a). The rear ends of both clamping members (27a) and (27b) are supported by a bearing (26b) so as to be rotatable downward from a horizontal position and are always urged to rotate in the horizontal direction by a spring (28b). part, that is, a piece (27a') rising from the shaft support
, (27b') are formed, and both clamping members (27B) are formed.
, (27b), contact pieces (29a), (29b) made of an elastic material such as rubber are fixed to the opposing surfaces of the tips, respectively. Further, the bearing portion (27a'') of the upper clamping member (27a) and the upper surface side of the lower clamping member (27b) are in contact with the inner surface of the front bearing (26a) of the sliding body (26), and both clamping members (27
a) A holding portion (26a') that holds (27b) horizontally is formed.

Then, the upper side gripping member (27a) of the gripping body (27)
The rising piece (27a') of the chucking arm (16
) corresponds to the front side (16a) of the lower holding member (2
The rising piece (2'7b') of 7b) is the chassis (12)
This corresponds to the protruding piece (30) protruding from the rear edge.

When the loading mechanism (24) configured in this way is moved in the front-back direction by the drive mechanism (31) and moved to the frontmost position, the upper holding member (27a) is moved by the rising piece (27).
a') is the front side (16a) of the chucking arm (16).
) and is rotated upward against the biasing force of the spring (28a) (see FIG. 7A), and when moved to the rearmost position, the lower holding member (27b) engages with the rising piece (27b). ') collides with the protruding piece (30) and rotates downward against the biasing force of the spring (28b) (see B in the same figure), that is, both the holding members (2?a
), (27b) will be opened.

Next, the drive mechanism (31) of the loading mechanism (24) will be explained with reference to FIGS. 3 and 4.

(32) is a rack fixed to the side surface of the sliding body (26), and the driving gear of the gear mechanism (33) is meshed with this rack (32). The gear mechanism (33) is connected to the shaft (3) of the motor (34).
4a), the large diameter tooth portion (36a) is attached to the gear (35) fixed to the gear (35).
A first intermediate gear (36) meshed with this gear (36);
6), the second necessary intermediate gear (37) in which the large diameter ridge portion (37a) meshes with the small diameter tooth portion (36b), and this gear (37).
A third intermediate gear coaxial with the first intermediate gear (36) in which the large diameter tooth part (38a) is meshed with the small diameter tooth part (37b) of the
38), and a fourth intermediate gear (39) in which the large diameter tooth portion (39a) meshes with the small diameter tooth portion (38b) of this gear (38).
The small diameter crest (39b) of this gear (39) has a large diameter tooth (
40a) is meshed with the fifth intermediate gear (40), and the small diameter ridge portion (40b) of this gear (40) has an intermediate diameter tooth portion (41a).
) is meshed with the drive gear (41) and the large diameter ridge portion (41b) is meshed with the rack (33), and the large diameter ridge portion (42a) is meshed with the small diameter tooth portion (41c) of this gear (41). Fifth
Consisting of an operating gear (42) coaxial with the intermediate gear (40), and an interlocking gear (43) coaxial with the fourth intermediate gear (39) meshed with the small diameter tooth portion (42b) of this gear (42). has been done. And the rack (33) of the drive gear (41)
The large diameter gear part (41b) and the operating gear (42
) have missing teeth (41b') in the small diameter toothed parts (42b).
and (42b') are formed. Also, interlocking gear (43
) is meshed with the rack part (44a) of the chucking cam (44), and this chucking cam (44) has an inclined surface (44c) on the front side of the higher surface (44, b), and the chucking arm The roller (45) protruding from the rear part of the negative side part (16b) of the chucking arm (16) is moved in the front-back direction along the negative side part (16b) of the chucking arm (16), and This roller (45) is the chucking cam (44)
As the chucking arm (16) moves back and forth, it is moved up and down along the front inclined surface (44c), and the chucking arm (16) is raised and lowered.

The chucking cam (44) is fixed to a sliding plate (46), and this sliding plate (46) has a longitudinal guide hole (46).
a) and (46b) are formed, and the stepped pins (47a) and (4
7b) are engaged and slid horizontally in the front-back direction.

Next, a disc loading operation of the disc player of this example configured as described above will be explained.

First, when the disk D is not loaded, the chucking arm (16) is placed and supported on the high surface (44b) of the chucking cam (44) where the roller (45) is moved to the front, and the spring (17) is It is rotated upward against the biasing force.
The chucking disk (18) is held in a tilted position C, and the chucking disk (18) is separated upward from the spindle (13). In this state, the clamping body (27) of the loading mechanism (24)
The upper holding member (27a) is moved forward via the sliding body (26) and the spring (28a) is caused by the engagement of the rear rising piece (27a') with the front edge (16a) of the chucking arm (16). ) and is held in the open state by moving upward against the urging force of (FIG. 7A). The engagement portion of the rising piece (27a') of the upper holding member (27a) is not limited to the front edge (16a) of the chucking arm (16); A retaining member may be provided, and a chucking arm (16
) is formed into a straight bar shape, the arm (
16) may be provided with a protruding engagement piece.

In this state, when inserting the disc D into the insertion slot (2) of the front panel (4) of the player case (11) while pushing open the opening/closing lid (5), the front edge of the disc D will be inserted into the guide arm (19).
), (19') first guide grooves (19a), (19a
'), and when pressed horizontally, the guide arms (19), (19') are engaged with the springs (22), (
22') against the biasing force of the axial bins (20), (20')
The disc D is rotated outward about the shaft support as the rotation center to create a space at which the disc D can be inserted, and the disc D is slid horizontally inward along the first guide grooves (19a) and (19a'). As the front edge reaches the lower side of the chucking disk (18), the upper and lower clamping members (27a), (27) of the clamping body (27)
27b) inserted between.

In this state, the position detection switch is turned on and the motor (34
) is driven, which causes the gear mechanism (33) to rotate and the rack (
32) to the rear along the guide rail (25), and the upper clamping member (27a) of the clamping body (27) has a rising piece (27a') that slides rearward along the guide rail (25). The spring (
The lower clamping member (27b) moves downward due to the urging force of the lower clamping member (27b).
) grips the front edge of the disk D. In this state, the rotation of the gear mechanism (33) causes the holding body (27) to move rearward while holding the disk D, so that both sides of the circumference of the disk D are aligned with the first guide arms (19) and (19'). It is guided and moved inward along the guide grooves (19a) and (19a').

At this time, the operating gear (42) of the gear mechanism (33) has a toothless portion (42b') of its small diameter crest (42b) connected to the interlocking gear (42).
3), so the interlocking gear (43
) is not rotated, and the rank part (44a) is attached to this gear (43).
), the chucking cam (44) connects the stopped state, and the roller (4) of the chucking arm (16)
5) remains supported on the cam higher surface (44b);
Therefore, the chucking arm (16) is held in an upwardly tilted state, and the chucking plate (18) is attached to the spindle (13).
) is separated from the

In this state, when the holding body (27) is moved to the vicinity of the rearmost portion while holding the disk D, the small diameter ridge portion (42b) of the operating gear (42)'' engages with the interlocking gear (43).
Every time this is rotated, the chucking cam (44), which is engaged with the interlocking gear (43) via the rack part (44a), moves backward through the guide slot (46a) of the sliding plate (46).
, (46b), and the front inclined surface (44c
) corresponds to the roller (45) of the chucking arm (16). Therefore, the roller (45) has an inclined surface (44
c), and the chucking arm (16) is brought down by the biasing force of the spring (17). Then, when the gear mechanism (33) further rotates and the clamping body (27) is moved to the rearmost position, the rising portion (27b') of the lower clamping member (27b) collides with the protruding piece (30) and comes together. spring (28b
) is rotated downward against the biasing force, and the disc D is released from being held (FIG. 7B). At this time, the front edge of the disk D is connected to a locking piece (30) protruding from the rear edge of the chassis (12).
') and is prevented from moving backwards. In this operation, the inclined surface (44c) of the chucking cam (44)
The lowest part of the chucking arm (16) corresponds to the roller (45), and the chucking arm (16) is lowered to the lowest part, and the chucking 1 (1B) comes into pressure contact with the disc spindle (13), pinching the disc between them. .

In this state, the disk D is lowered from the horizontal position at the time of insertion, and the peripheral edge is attached to the second guide arm (19), (19').
The grooves (19b) and (19b') correspond to the groove (30a') of the locking piece (30'), and in this state, the power of the motor (34) of the drive mechanism (31) is turned off. The loading operation of disk D is completed.

In this state, the guide arms (19), (19') are rotated back inward by the deflection of the springs (22), (22'), and are engaged with the locking pieces (23), (23'). The disc D is in the lowered position and the periphery is in the second position.
corresponds to the guide grooves (19b) and (19b'),
Since this groove is formed deeper than the first guide 1 (19a), (19a'), the peripheral edge of the disk D does not come into contact with the groove (30a') of the locking piece (30').
), the disk D can rotate without any problem.

After the loading is completed in this manner, the spindle motor is driven to rotate the disk D, and the optical pickup (15) performs reproduction.

Next, the case where the disc D is ejected from the chucked state will be explained. First, when the eject operation button (3a) is pressed, the motor (34) of the drive mechanism (31) is turned on in reverse, and the reverse operation of the disk D insertion and chucking operation described above is performed.

That is, when the motor (34) is turned on in reverse, the drive mechanism (34)
The gear mechanism (33) of 1) is reversed, and first the operating gear (
The teeth of the small diameter tooth portion (42b) of 42) are interlocking gears (43)
The chucking cam (44) is engaged with the rack portion (44a) and rotated in the reverse direction, thereby moving the chucking cam (44) forward. Therefore, the inclined surface of the chucking cam (44) (
44c) of the chucking arm (16)
45) is pushed up, the chucking arm (16) is raised against the biasing force of the spring (17), the chucking disk (18) is separated from the disk surface, the chucking is released, and the chucking cam The chucking arm (16) reaches its highest raised position due to the high first surface (44b) of (44) coming into contact with the roller (45), and in this state the small diameter tooth portion (42b) of the operating gear (42) Missing tooth (
42b') corresponds to the interlocking gear (43), so the interlocking gear (43) is not rotated and the chucking cam (4
4) is stopped at that position, and the chucking cam (16)
is held in the highest raised position.

During the starting operation of this chucking cam (16), the rack (32) of the loading mechanism (24) is connected to the drive gear (41).
Since the missing tooth portion (41b') of the large diameter tooth portion (41b) is in rolling contact, the clamping body (27) is not slid. Therefore, when the chucking arm (16) is held at the highest position as described above, the crest of the large diameter ridge (41b) of the drive gear (41) meshes with the rack (32), and the clamping body (27) The sliding body (
26). This movement of the clamping body (27) forward causes the lower clamping member (27b
), the rising piece (27b') is separated from the projecting piece (30) and rotated upward by the biasing force of the spring (28b), thereby holding the disk D between the upper holding part (27a). 2 In this way, the disc D is transferred forward by the movement of the clamping body (27) while being clamped by the clamping body (27), and the front side of this disc D is held by the guide arms (19), (
The guide arms (19), (19) are inserted into the second guide grooves (19b), (19b') of the guide arms (19), (19b')
') is moved forward while pressing outward against the biasing force of the springs (22), (22'), and the inclined surfaces (19b1) of the second guide grooves (19b), (19b'), (1
9bt') along the first guide grooves (19a), (19
a') direction, and the intermediate part overcomes the inclined upper part (19b2), (19b2') on the upper surface side, thereby forming the first guide groove (19a), (19a') as a whole.
This disk D is further moved to the first guide fi (1
9a) and (19a').

In this way, the clamping body (27) is moved forward and the rising piece (27a') of the upper clamping member (27a) engages with the front side (16a) of the chucking arm (16), causing the spring ( 28a) to release the grip on the disc D, and the disc D can be taken out from the insertion slot (2) of the front panel (4) of the player case (1+).゛With the upper clamping member (27a) of this clamping body (27) moving upward, the motor (34
) is turned off, each member is stopped at that position, and the disk D is kept in the unloaded state, that is, in a state in which the disk D can be inserted and loaded.

As described above, in this example, the guide arms (19) and (19') guide the insertion, transfer and ejection of the disk D into the disk spindle (13), and the first guide guides the horizontal insertion of the disk D into the disk spindle (13). Groove (19a), (1
9a') and continuous to this first guide groove, the disk D
A second guide groove (19b), (19b':') is formed to allow the disk to move in a direction perpendicular to the plane of the disk D. ), the disc D is configured to engage with the locking pieces (23) and (23') protruding from the chassis (12) to cut off the biasing force against the disc D. Spindle (13)
- The guide arms (19), (19'
), the disk D can be smoothly moved from the second guide groove to the first guide groove without hindering its rotation, and can be ejected very easily.

Application Examples The present invention can be applied to various types of disc players such as portable disc players for home use as well as disc players installed in automobiles and the like.

Effects of the Invention As described above, according to the present invention, the guide arm that guides the insertion, transfer, and ejection of the disk from the disk spindle has a first guide groove that guides the horizontal insertion of the disk, and a first guide groove that is continuous with the first guide groove. However, since a second guide groove is formed that allows the disk to move in a direction perpendicular to the surface of the disk, the disk can be reliably inserted and transferred in a horizontal state, and ejection from the disk spindle is also extremely smooth. The loading and unloading of discs into and out of the disc player can be carried out reliably and smoothly even if vibrations are applied from the outside during operation, especially for disc players used in locations subject to vibrations such as those installed in automobiles. It is suitable for a disk loading device, and since the guide arm is independently rotated and biased independently of other mechanisms, it has the advantage of being durable for long-term use with almost no failures.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of an example of a disc player to which the device of the present invention is applied, FIG. 2 is a perspective view of an example of a disc player mechanism equipped with the device of the present invention, and FIG. 3 is an enlarged plan view of a portion of the same. Figure 4 is the same side view, and Figure 5 is the same as that shown in Figure 2.
6 is an enlarged sectional view taken along the line nn of FIG. 2, FIGS.
Figure 9 is a plan view of the guide arm, the filo diagram is the same, an inner side view, Figure 11 is the same, a front view, and Figure 12 is the IV-IV of Figure 1O. There is a large cross-sectional view with lines included. In the figure, (12) is the chassis, (13) is the disk spindle, (16) is the chunking arm, (16a) is the front side, (18) is the chucking board, (19) (19'
) is the guide arm, (19a) '('i9a'
) is the first guide groove, (19b) (19b') is the second guide groove, (23) (23') is the locking piece, (25)
is a guide rail, (26) is a sliding body, (27) is a clamping body, (27a) is an upper clamping member, (27b) is a lower clamping member, (30) is a projection piece, (31) is a drive mechanism, ( 32) is a rack. Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12

Claims (1)

[Claims] a pair of rotationally biased disc insertion guide arms, a first guide groove for guiding horizontal insertion of the disc into the insertion guide arm; the second which allows movement of
a disk transfer device forming a guide groove and transferring the disk from a first horizontal position to a second horizontal position;
A stopper is protrudingly provided on the chassis to which the insertion guide arm is pivotally attached so as to cut off the urging of the disk by the insertion guide arm when the disk is in the second horizontal position, position, the pair of insertion guide arms bias the disc toward the second horizontal position, and when the disc is transferred to the second horizontal position, the disc is biased toward the horizontal position. A stopper is provided for regulating the movement of the disk, and the disk is further guided by the second guide groove and the stopper when the disk is transferred from the second horizontal position to the position where it is placed on the disk spindle. 1. A disc loading device for a disc player, characterized in that the disc loading device is configured to close the disc.