JPH0695420B2 - Front loading disk player - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player, and more particularly to a front loading disc player having a disc carrying mechanism for automatically carrying a disc to a playing position.

Background Art A type in which a disc such as an audio disc having a sound groove on the surface or a digital audio disc on which a PCM signal is recorded is carried by a carrier provided so as to be projectably housed in a player housing and completely housed in the player housing. There is known a front-loading disc player in which a space on the top face of the disc player can be effectively used by placing an object thereon.

A front-loading disc player has been developed which is provided with a projecting and storing means for automatically projecting and storing the above carrier by moving the carrier to and from the player housing, thereby saving the trouble of disc loading and ejecting as much as possible. There is. In this front-loading disc player, when the disc placed on the carrier outside the player housing is positioned on the playing position, that is, on the turntable, it is conveyed in two directions, that is, the horizontal direction and the vertical direction. For this reason, conventionally, as the carrier, a tray that is reciprocally movable in the horizontal direction with respect to the player housing, and a tray that is reciprocally movable in the vertical direction to the tray and that can project together with the tray to the outside of the player housing is A two carrier member has been used which cooperates with a container for carrying the disk.

When playing a disc in such a front-loading disc player, the tray moves horizontally with the container and is housed in the player housing, and at the same time, the tray is fixed to the player housing, and then only the container is vertical. The disk on the container is placed on the turntable. Therefore, a complicated operation switching mechanism for appropriately switching the operation of the tray and the container is provided, and the total number of parts is large, including that the carrier is composed of the two members of the tray and the container. , The cost was high.

On the other hand, a door is provided to close the opening formed in the player housing for the carrier to project, and the carrier moves while contacting the door when the carrier performs the projecting and storing operation. . Therefore, there is a problem that abnormal noise is generated due to the carrier and the door rubbing against each other.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is a low cost, and further, a front loading disk player in which no noise is generated when the carry is projected and the storage portion is not generated. Is to provide.

A front-loading disc player according to the present invention includes a housing, an opening formed in the housing, a playing means including a turntable, a carrier carrying a disc, and a vertical direction above the playing means installed in the housing. A carrier transfer mechanism that can transfer the carrier in each of the horizontal directions at the height where the opening is located, a drive unit that drives the carrier transfer mechanism, and the opening rotatably supported by the housing. A front loading disc player including a door that opens and closes and a biasing member that biases the door in a direction of closing the opening, wherein the door transports the carrier vertically upward by the carrier transport mechanism. Part of the member forming the carrier transport mechanism abuts a part of the door. It is characterized in that the opening can be rotated in the opening direction.

Embodiment Hereinafter, a front loading disc player as an embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 indicates the entire front loading disc player.

As shown in FIG. 1, on the front portion of the player housing 2, that is, on the front panel 3, a rectangle extending in the left-right direction so that a carrier 5 carrying a disc 4 to be played can be projected to the outside of the player housing. The opening 3a is provided. However, the arrow Y direction is the front and the arrow X direction is the left. The arrow Z indicates upward. A plate-shaped door 6 for closing the opening 3a is provided in the vicinity of the opening 3a. The front panel 3
A switch group 7 for operating the disc player is provided above.

A chassis 8 made of a steel plate is provided in the player housing 2, and playing means including a turntable and an optical pickup means described later are provided on the chassis 8.

Next, the carrier 5 and the transport mechanism for transporting the carrier to the player housing 2 so as to project or be stored will be described.

As shown in FIGS. 1 and 2, the upper surface of the carrier 5 is concentrically formed with two circular shallow recesses 5a and 5b into which optical video disks having diameters of about 30 cm and 20 cm are respectively inserted. Has been done.

As shown in FIGS. 2 to 5, a pair of rectangular plate-shaped steel plate supporting members is provided so as to sandwich the carrier 5 on both left and right sides.
11 and 12 are provided, and the carrier 5 is in a direction parallel to the disk carrying surface 14a of the turntable 14 (shown in FIG. 3) by the support members and the roller 15 (shown in FIG. 3)
In this case, it is supported so as to be movable in the front-rear direction (the arrow Y direction and the opposite direction). In addition, each support member 11
Details of the side profile of and 12 are shown in FIGS. 6 and 7. As shown in FIGS. 2 and 4 to 7,
On the outer surface of each of the support members 11 and 12, a pair of pins 11 spaced apart in the front-rear direction (the arrow Y direction and the opposite direction).
a and 12a are provided so as to project, and the pins are movably fitted in L-shaped guide holes 8a (see FIGS. 1, 4, and 5) formed in the chassis 8. . That is, the support members 11 and 12 are configured to move along the L-shaped guide hole. Each L-shaped guide hole 8a includes a horizontal portion that extends in the horizontal direction and a vertical portion that extends in the vertical direction (downward) continuously from the rear end of the horizontal portion.

As shown in FIGS. 2 to 5, a pair of left and right rectangular plate-shaped moving members 17 and 18 are arranged so as to sandwich the L-shaped guide hole 8a together with the support members 11 and 12. In addition,
FIG. 8 and FIG. 9 show details of the side shapes of the moving members 17 and 18, respectively. The moving members 17 and 18 are attached to the chassis 8 so as to be reciprocally movable in the front-rear direction (the arrow Y direction and the opposite direction). Each support member 11 and 12 described above
Pins 11a and 12a projecting from the outer side surface of the cams pass through the L-shaped guide holes 8a formed in the chassis 8 and cam holes 17a and 18a formed in the moving members 17 and 18 (see FIG. 4, FIG. 5, FIG. 8, and FIG. 9) are slidably engaged. 8th
As is clear from FIG. 9 and FIG. 9, these cam holes 17a,
Reference numeral 18a denotes horizontal portions 17a and 18b extending in the horizontal direction, and inclined portions 17c continuous to the rear end portions of the respective horizontal portions and inclined upward (arrow Z direction) toward the rear (counter arrow Y direction). 18c
It consists of and. That is, the moving members 17 and 18 move forward and backward (arrow Y
Direction (and the opposite direction) so that the carrier 5 moves in the vertical direction (the arrow Z direction and the opposite direction) together with the support members 11 and 12, respectively.
a is formed.

As shown in FIGS. 3 to 5 and FIGS. 8 and 9, rack portions 17e and 18e are formed at the lower ends of the pair of left and right moving members 17 and 18, respectively. As shown in FIGS. 3 and 5, the small gear portion of the double gear 20 is meshed with the rack portion 18e formed on the right moving member 18. The double gear 20 includes a double gear 21 that meshes with the large gear portion and the small gear portion of the double gear, and another double gear 2 that meshes with the large gear portion and the small gear portion of the double gear 21.
2. A gear portion 23a meshing with a large gear portion of the double gear 22 is connected to an output shaft of a motor 26 through a pulley 23 integrally formed, a belt 24 and a small pulley 25 in this order. Also, the second
As is apparent from FIGS. 3, 3 and 5, the double gear 20 is fitted to one end thereof, and the gear 29 is fitted to the other end of the shaft 28. It is meshed with the rack portion 17e formed on the other moving member 17 arranged in the. That is, as the motor 26 rotates, the left and right moving members 17 and 18 move together.

Each of the double gears 20, 21, 22 described above, the pulley 23, and the belt
24, small pulley 25, motor 26, shaft 28, gear
A driving force applying unit configured to apply a driving force to the pair of moving members 17 and 18 is constituted by 29 and. Further, the pair of support members 11 and 12 and the chassis 8 in which the L-shaped guide hole 8a is formed allow the carrier 5 to move horizontally and vertically in accordance with the movement of the moving members 17 and 18. A carrier transfer mechanism is configured. It should be noted that since the carrier transfer mechanism is composed of a member made of a steel plate or the like, the cost of the player as a whole is reduced,
It is extremely easy to manufacture.

As shown in FIGS. 2 to 4, a rectangular plate-shaped rack member 31 is arranged extending in the front-rear direction at a position sandwiched by the chassis 8 and the support member 11. The side shape of the rack member 31 is shown in FIG. The rack member 31 is attached to the chassis 8 so as to be movable only in the vertical direction (the arrow Z direction and the opposite direction). As is particularly clear from FIG. 10, the rack member 31
A pair of elongated holes 31a extending in the front-rear direction (the arrow Y direction and the opposite direction) are formed in the support member 11.
Two pins 11a projecting from each of the slots are slidably engaged with the elongated holes. That is, the rack member 31 has the support member 11
It moves up and down with it. As is particularly clear from FIG. 10, a rack portion 31b is formed at the lower end of the rack member 31 along the extending direction of the rack member 31.

A projection 31c is formed on the lower front end of the rack member 31, and the upper edge of the projection 31c is brought into contact with and engages with a hook portion 6b of the door 6 which will be described later.

As shown in FIGS. 2 to 4, a small gear of a double gear 32 meshes with the rack portion 31b. Double gear 32
The small gear portion of the other double gear 33 meshes with the large gear portion of the rack gear 5 and the rack portion 5d formed along the moving direction of the carrier 5 meshes with the large gear portion of the double gear. There is. The double gears 32 and 33 are mounted on a bracket portion 11c provided on the support member 11 so as to project leftward and rightward, and the double gears move up and down together with the support member 11.

By the rack member 31, the rack portion 5d formed on the carrier 5, and the double gears 32 and 33, the carrier 5
A double speed mechanism is configured to move the moving member 17 (18) at a speed that is a predetermined multiple of the moving speed of the moving member as the moving member 17 (18) moves. The ratio between the moving speed of the moving member 17 (18) and the moving speed of the carrier 5 is determined by the number of teeth of the two double gears 32 and 33, and in this case, it is about 1: 4.

The above double speed mechanism is included in the carrier transport mechanism described above. Further, since the speed doubling mechanism is constituted by the gear mechanism and the rack portion in this way, the speed ratio between the moving member 17 (18) and the carrier 5 can be easily changed, and this can be performed at low cost.

Next, the clamp mechanism for clamping the performance position, that is, the turntable 14 (shown in FIG. 3) will be described.

As shown in FIGS. 2 and 5, in the player housing 2, a rectangular plate-shaped flat portion extending in the left-right direction is formed.
A holding member 37 is provided which is composed of 37a and an upright portion 37b which is continuous with the end of the flat portion. The holding member 37 is shown in FIG.
The details of the side surface shape are shown. As is clear from FIGS. 5 and 11, the holding member 37 is pivotally attached to the pin 39 at the front end of the elevation portion 37b. The pin 39 is provided so as to project from the support members 11 and 12 described above. The pin 37 that pivotally supports the holding member 37 extends in parallel with the disk-carrying surface of the turntable 14 described above, so that the holding member 37 is in a plane perpendicular to the disk-carrying surface (direction of arrow S). It is swingable. As shown in FIG. 11, a cutout portion 37c having a predetermined curvature is formed at the other end of the upright portion 37b, and another pin 40 (also shown in FIG. 5) swings in the cutout portion. The free engagement guides the swinging of the holding member 37. The pin 40 also protrudes from the above-mentioned pin 39 mainly on the support members 11 and 12. Further, as shown in FIG. 11, a coil spring 41 for biasing the free end of the holding member 37 in a direction of bringing the free end closer to the turntable 14 is connected to the free end. As shown in FIGS. 2, 3, and 5, a disk-shaped pressing member for pressing the disk 4 (see FIG. 1) to the turntable 14 is provided at the center of the flat surface portion 37a of the holding member 37. 43 is rotatably attached.

The holding member 37, the coil spring 41, and the pressing member 43 described above constitute a clamp mechanism.

As shown in FIG. 2, FIG. 3 and FIG. 12, the upper surface of the double gear 33, which is a part of the above-mentioned double speed mechanism, is
A linear groove 33a is formed extending in the radial direction of the gear. On the other hand, a linear projection 5f is formed on the lower surface of the carrier 5 along the moving direction of the carrier. Straight groove
33a and the linear protrusion 5f have a complementary shape so that they can be fitted to each other. That is, the rack portion 5d formed on the carrier 5 and the double gear 33 when the displayer is assembled.
When meshing with the large gear part of, the linear protrusion 5f is fitted in the linear groove 33a, the double gear 33 is fixed at the regular rotation position, and the meshing position of the rack portion 5d and the double gear 33 with each other. The deviation is prevented. However, the linear protrusion 5f
The rack portion 5d is in the double gear 3
It is released just before meshing with 3.

Next, the opening / closing mechanism of the door 6 for opening / closing the opening 3a of the housing 2 will be described. 13 (a) to 13 (d) are state diagrams showing the operating process thereof, and FIG. 13 (a) shows that the carrier 5 is conveyed vertically downward by the carrier conveying mechanism and is located in the vicinity of the turntable. It shows the state (closed state) of the door 6 in the case. That is, the outer edge of the hook portion 6b of the door 6 and the protrusion 31c of the rack member 31 are not in contact with each other, and the door 6 is biased by the coil spring 46 to close the opening.

FIG. 13 (b) shows a state where the carrier 5 is being conveyed vertically upward by the carrier conveying mechanism. That is, as described above, when the rack member 31 that forms a part of the carrier transport mechanism and moves only in the vertical up and down direction moves upward as the carrier is transported, the upper edge of the protrusion 31c has the hook portion of the door 6. The door 6 is brought into contact with the outer edge portion 6b, and is rotated by a predetermined angle about the support shaft 6a in the direction of opening the opening 3a.

FIG. 13 (c) shows a state in which the carrier 5 has been conveyed vertically upward by the carrier conveying mechanism and the upward conveyance has been completed. In this state, the projection 31c of the rack member 31 is in abutting engagement with the outer edge of the hook portion 6b of the door 6, and the door 6 is rotated about 90 degrees so as to completely open the opening 3a.

Here, the protrusion 31c of the rack member 31 is the hook portion 6b of the door 6.
Until the door 6 is completely opened by engaging the
Since the upper edge portion of c and the outer edge portion of the hook portion 6b are in slidable contact with each other, the operation is smooth and no collision occurs.

FIG. 13D shows a state in which the carrier 5 is being conveyed outward in the horizontal direction after the conveyance of the carrier 5 to the upper side is completed. Even in this state, the projection 31c and the hook portion 6b are always in a contact engagement state by the urging force of the coil spring 46, and the door 6 does not rotate in the closing direction.

In short, when the carrier transport mechanism transports the carrier vertically upward, a member forming the carrier transport mechanism, that is, a part of the rack member 31 (projection 31c) contacts a part of the door 6 (hook portion 6b). The door 6 is constructed so as to contact with each other and rotate the door 6 in the direction of opening the opening 3a.

Next, the operation of the disc player having the above-mentioned structure will be briefly described along the playing procedure with reference to FIGS. 14 to 16.

As shown in FIGS. 1 and 14, the carrier 5 is projected out of the player housing 2 and the disc 4 is placed at a predetermined position on the carrier. The projecting operation of the carrier 5 to the outside of the player housing is a process which is completely opposite to the storing operation described below, and will not be described in detail.

When the disk 4 is placed on the carrier 5, the switch group 7
Press the loading button included in (first shown). Then, the motor 26 (see FIG. 5) rotates, and the left and right moving members 17 and 18 start moving backward (direction opposite to the arrow Y).
Therefore, the pins 11a and 12a at the intersecting positions of the cams 17a and 18a of the moving members 17 and 18 and the L-shaped guide holes 8a of the chassis 8, and thus the support members 11 and 12, move rearward. With the rearward movement of the one support member 11, the two double gears 32 and 33 (shown in FIG. 2 and the like) provided on the support member also move rearward. Since the double gear 32 meshes with the rack portion 31b formed on the rack member 31, the double gear rotates in the clockwise direction in FIG. 2 by the rearward movement of the support member 11. Therefore, the other double gear 33 rotates counterclockwise in FIG. 2, whereby the carrier 5 having the rack portion 5d meshing with the double gear is moved by the moving members 17,1.
It moves backward at about 4 times the moving speed of 8.

Thus, the carrier 5 reaches the position shown in FIGS. After that, the motor 26 further rotates, and the moving members 17 and 18 are driven further rearward. Therefore, as shown in FIG. 15 and FIG. 16, the carrier 5 includes the support members 11, 1
The disc 4 descends with the turntable 2 and the turntable 14 (the third disc
(Shown) and clamped. In this state, the motor 26 is stopped and the disc can be played.

When the disk performance is finished, the motor 26
Starts to rotate in the reverse direction, and the carrier 5 projects to the outside of the player housing 2 following the above-described reverse process. Thus, the disc 4 is recovered.

In this embodiment, the carrier 5 is supposed to move in the horizontal and vertical directions. However, depending on the installation condition of the disc player, this is not the direction but two directions that are perpendicular to each other.

As described above in detail, in the front loading disc player according to the present invention, the housing (2), the opening (3a) formed in the housing, the playing means including the turntable, and the carrier carrying the disc. (5)
A carrier transport mechanism which is installed in the housing and is capable of transporting a carrier in the vertical direction above the playing means and in the horizontal direction at the height where the opening is located; drive means for driving the carrier transport mechanism; It has a door that is freely supported and opens and closes the opening, and a biasing member that biases the door in the direction of closing the opening, and the door transports the carrier vertically upward by the carrier transport mechanism. At this time, a part (projection 31c) of the member (rack member 31) forming the carrier transfer mechanism is part of the door (hook portion 6).
It comes into contact with b) and can be rotated in the opening direction.

Therefore, since the door (6) that closes the opening (3a) formed in the player housing (2) is opened and closed by the vertical movement of the carrier transfer mechanism, the carrier and the door do not rub against each other and abnormal noise is generated. do not do.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a front loading disc player according to the present invention, FIG. 2 is a plan view of the internal structure of the disc player, and FIGS. 3 to 5 each include a partial cross section with respect to FIG. -III arrow view, IV-IV arrow view and VV arrow view, FIGS. 6 to 12 are partial detailed views of the internal structure, and FIGS. 13 (a) to (d) are door views. 14 to 16 are sectional views in the operating process showing the operating state, and FIGS. 14 to 16 are views for explaining the operation of the disc player. Explanation of symbols for main parts 2 …… Player housing 3a …… Opening 4 …… Disk 5 …… Carrier 5d, 17e, 18e, 31b …… Rack 5f …… Linear projection 6 …… Door 6a …… Support shaft 6b …… Hook part 8 …… Chassis 8a …… L-shaped guide hole 11,12 …… Supporting member 14 …… Turntable 14a …… Disk carrying surface 17,18 …… Movement member 17a, 18a …… Cam hole 20 , 21,22,32,33 …… Double gear 26 …… Motor 29 …… Gear 31 …… Rack member 33a …… Linear groove 31c …… Protrusion 41,46 …… Coil spring 43 …… Pressing member

Claims (1)

[Claims] 1. A housing, an opening formed in the housing, a playing means including a turntable, a carrier carrying a disk, a housing mounted inside the housing, in a vertical direction above the playing means and in the opening. A carrier transport mechanism capable of transporting the carrier in each of horizontal positions at a height, drive means for driving the carrier transport mechanism, and a door rotatably supported by the housing to open and close the opening. A front loading disc player including a biasing member that biases the door in a direction of closing the opening, wherein the door transports the carrier vertically upward by the carrier transport mechanism, A part of a member forming the carrier transfer mechanism abuts a part of the door and is rotated in a direction of opening the opening. A front-loading disc player characterized in that