JPH0339349B2 - - Google Patents

Description

TECHNICAL FIELD The present invention relates to a disc player, and more particularly to a front loading disc player equipped with a disc transport mechanism that automatically transports the disc to a playing position.

Background technology Audio disc with sound grooves on the surface or
A disk, such as a digital audio disk that records PCM signals, is carried by a disk holder provided in a manner that protrudes from the player housing so that it can be freely stored, and is completely stored inside the housing. So-called front-loading disc players are already known which allow efficient use of space.

Recently, such front-loading disc players have been equipped with a disc transport mechanism that includes the above-mentioned disc holder and automatically transports the disc to the playing position or very close to it, thereby saving the effort required for disc loading. something is being developed. When positioning the disk placed on the disk carrier outside the housing on the playing position, that is, on the turntable, the disk is moved in two directions, for example, in a direction parallel to the rotating surface of the turntable and in a direction substantially perpendicular thereto. Conveying is performed.

In order to achieve this conveyance, for example, in a front loading disk player proposed by the applicant in Utility Model Application No. 58-152505, the horizontal chassis 18 serving as a support member is mounted in a direction parallel to the turntable rotating surface, that is, in the front-rear direction. A tray 23 is attached to the tray so as to be freely movable in the direction of the arrow Y (in the direction of the arrow Y and the opposite direction thereof), and a tray 23 is provided on the tray so as to be freely movable in parallel in the vertical direction (the direction of the arrow Z and the opposite direction thereof), and together constitute a disk carrying section. a pair of cam members 34 and 35 that are disposed to sandwich the flat container 27 from the left and right, have cam holes that engage with the container, and are movable in the front and rear directions of the tray 23;
a driving force applying mechanism that applies a driving force in the front-rear direction to either one of the cam members (the cam member 35);
35 are interlocked with each other. Further, this interlocking mechanism is constituted by a plurality of members such as a support shaft 63, a rotation lever 64, and a swing lever 65.

In the already developed front loading disk player mentioned above, the number of parts of the mechanism (consisting of the container 27, cam members 34 and 35, and the above-mentioned interlocking mechanism) that moves the disk in the direction perpendicular to the turntable rotation surface is as follows. Therefore, the structure is complicated and the cost is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its purpose is to provide a front-loading disk player that has a simple structure, is therefore inexpensive, and has reliable disk loading. It is to be.

A front loading disc player according to the present invention includes a tray in which a disc transport mechanism for transporting a disc to be played onto a turntable in a player housing is provided so as to protrude from the player housing in a first predetermined direction; a container provided on the tray to support a disk and move it in a second predetermined direction, the tray having an arcuate outer circumferential recess capable of accommodating the disk and guiding it in the second predetermined direction; is provided, the container swings between a loading position and a non-loading position to carry a disk at its free end, and an opening is formed in the center of the free end and a spacer is provided on either side of the opening. A disk mounting plane is provided, and the disk mounting plane is substantially parallel to the disk carrying surface of the turntable when the container is in the carrying position.

Embodiments Hereinafter, a front loading disc player according to the present invention will be described with reference to the accompanying drawings.

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

For example, as shown in FIGS. 1 and 2, a front panel 2, a rear panel 3, a bottom plate 4, and a side plate 5
A housing 6 is formed by these, and these are connected to each other by a plurality of screws or the like. The flant panel 2 is provided with a rectangular and laterally elongated opening 2a so that a disk supporting portion, which will be described later, can protrude out of the housing. Further, the rear panel 3 is provided with a transformer 8 and a cover 9 that covers the transformer, and a power supply cord 10 is arranged on the sides of these. As is clear from FIG. 2, three vertical chassis 12, 13, and 14 are fixed to the rear panel 3, and an operating section 16 for performing performance operations is fixed to the front end of these vertical chassis. . However, the term "forward" here refers to the direction indicated by arrow Y in the figure. Therefore,
The direction indicated by arrow X is to the left toward the front, and the direction indicated by arrow Z is upward.

As shown in FIGS. 2 to 4, 6, and 10 to 14, a horizontal chassis 18 as a support member is disposed between the vertical chassis 12 and 13. As is clear from FIGS. 3, 6, 10, and 11, rail portions 18a and 18b extend in the front-rear direction near both left and right ends of the lateral chassis 18, and extend approximately the entire length of the lateral chassis 18. It has been formed over the years. The left rail portion 18a is formed to have a trapezoidal cross-sectional shape when cut in the left-right direction, and the cross-sectional shape of the right rail portion 18b when cut in the same direction is approximately chevron-shaped. On the horizontal chassis 18, the rail portions 18a, 18b
A pair of holding members 19 and 20 formed by bending a steel plate or the like are provided on the left and right outer sides of the holding member 19 and 20 extending back and forth, and a tray 21 is provided between the holding members. The tray 21 is formed of a slide base 22 made of a steel plate or the like, and a cover member 23 made of resin or the like and covered on the slide base 22. The slide base 22 includes retainers 24a and 24b, which are prevented from falling off by fall prevention parts 22a, 19a, and 20a provided at both front and rear ends of the slide base and members 19, 20, as well as retainers 24a and 24b above and below the retainers. It is held between the rail portions 18a, 18b and the holding members 19, 20 via a plurality of bearing members 24c rotatably fitted in predetermined positions. That is, the slide base 22 and the cover member 23
The tray 21 made up of the following is slidable on the horizontal chassis 18 in the front-back direction (in the direction of arrow Y and in the opposite direction). In addition, cover member 2
A decorative panel 25 that can fit into and close the opening 2a of the front panel 2 is attached to the front end of the front panel 3.

In addition, as mentioned above, the slide base 22,
Therefore, the guide for the back and forth movement of the tray 21 is provided by a structure that does not require much manufacturing precision, such as rail portions 18a and 18b that are integrally formed on the horizontal chassis 18 by press processing or the like, and flexible holding members 19 and 20. By doing so, costs are reduced. This is because, in the already developed disk player, a pair of rail members made of a rigid body and separate from the horizontal chassis 18 are provided in place of the rail parts 18a and 18b, and the tray is moved through a predetermined bearing member. Many of them are configured to be supported by both rail members. However, this configuration has the problem that the tray will not slide smoothly unless the manufacturing precision of both rail members is significantly improved, resulting in high costs.

The tray 21 includes a housing 6 together with the tray.
A container 29 that can protrude to the outside of the tray and carries a disc 26 to be played in cooperation with the tray is attached at the front end so as to be able to swing vertically within a predetermined range. A pair of coil springs 29a are provided near the front end of the container 29, and the container 29 is urged upward by both coil springs. This container 29 and the tray 21 constitute a disk holding section.
The disk 26 is of a type that records and reads signals using laser light, and has an outer diameter of about 12 cm.

As is particularly clear in FIG.
The swing support shaft 29b integrally formed with the slide base 22 includes a pair of support portions having a substantially U-shaped cross section that are formed at the front end of the slide base 22 and externally fit onto the swing support shaft from the front to the rear. 22b and the support portion 2 when the cover member 23 is attached to the slide base 22.
2b and a pair of left and right support protrusions 23a formed on the cover member. With this configuration, the swing support shaft 29b of the container 29 is supported at the same time as the cover member 23 and the slide base 22 are assembled, thereby simplifying the assembly work.

As is also clear from FIG. 5, the cover member 23 is provided with an arcuate outer circumferential recess 23b whose axial center is parallel to the vertical direction. A cutout 23c is formed in the bottom of the cylindrical recess 23b, and the free end of the container 29 is inserted into the cutout. Further, a pair of left and right disk guide protrusions 23d that extend in the vertical direction and can come into contact with the disk outer circumference are provided on the circumferential side of the arcuate outer circumference 23b and on the swinging end side of the container 29. .

Return the explanation. As understood with reference to FIGS. 2, 4, 10 and 11, the lateral chassis 1
The left and right rear end portions of 8 are attached to a pair of columnar members 30b fixed to the vertical chassis 12 and 13 by screws 30a, respectively, with nuts 30d via dampers 30c made of rubber or the like. These screws 30a, columnar members 30b and damper 30
c and the like constitute a rear leg mechanism that supports the rear end of the lateral chassis 18 and positions the rear end with respect to the housing 6. As shown in FIG. 14, the vertical chassis 12 and 13 have a pair of cylindrical shafts disposed near the opening 2a of the front panel 2 and on an axis substantially perpendicular to the direction of movement of the disk carrier. Member 32a is fixed. A shaft member 32b having an enlarged upper end and a cylindrical lower end is slidably fitted into the cylindrical member 32a. A coil spring 32c is compressed between the upper end of the cylindrical member 32a and the enlarged diameter portion of the shaft member 32b. In addition, the shaft member 3
A threaded portion is threaded on the inner periphery of the lower end cylindrical portion of 2b, and a screw 32d is screwed into the threaded portion. The screw 32d receives a reaction force by the vertical chassis 12 and 13, and can be rotated from the outside of the housing 6. The left and right front ends of the lateral chassis 18 are attached to the upper end of a shaft member 32d via dampers 32e made of rubber or the like and by nuts of the same type as the nuts 30d. The cylindrical member 32a and the shaft member 32
d, a coil spring 32c, a screw 32d, a damper 32e, and the like constitute a front leg mechanism that supports the front end of the lateral chassis 18 and positions the front end with respect to the housing 6. The height of the front leg mechanism can be adjusted by rotating the screw 32d from outside the housing.

As shown in FIGS. 3, 5, and 10 to 12, a moving member 33 is provided at the right end of the slide base 22 of the tray 21 so as to be movable in the front-rear direction with respect to the tray. . This movable member 33 has a rack part 34a formed at its lower end over substantially the entire length, and a rack member 34 that is arranged in contact with the lower surface of the slide base 22, and a rack member 34 that is arranged in contact with the upper surface of the slide base 22. It is composed of a plate 35. The rack member 34 is made of resin, and the plate 35 is a processed steel plate. The front ends of the rack member 34 and the plate 35 are connected by fitting a bent portion 35a formed at the front end of the plate 35 into a protrusion 34b provided at the front end of the rack member 34. In addition, the rack member 34 and the plate 3
The rear end portions of 5 are connected by screws 33a. The moving member 33 consisting of the rack member 34 and the plate 35 includes the projection 34b and the screw 33a.
However, it is movable relative to the slide base 22 by being slidably engaged with elongated holes 22c and 22d formed in the slide base 22 to extend in the front-rear direction. An engagement protrusion 34c is formed at the front end of the rack member 34 and is slidably engaged with a cam hole 29c formed on the right side surface of the container 29. The front half of the cam hole 29c is a tapered portion that slopes upward from the front to the rear, and the container 29 swings up and down as the rack member 34, and therefore the movable member 33, move back and forth.

As shown in FIGS. 2 to 4, FIG. 7, FIG. 11, and FIG. A bracket 39 rotatably supports the meshing gear 37 at its front end.
are arranged and attached to the horizontal chassis 18 so as to be movable in the moving direction of the slide base 22, that is, in the front-rear direction. A motor 41 is attached to the bracket 39 via a sub-bracket 40, and a shaft 43 having a pulley 42 fixed to one end is rotatably provided. Pulley 4
2 is a small pulley 4 fitted on the output shaft of the motor 41
1a and a belt 44 (shown in the 11th figure). The bracket 39 also includes the shaft 4.
A gear 46 that meshes with a small gear 45 fitted to the other end of the gear 3 is rotatably supported. This gear 46
A small gear 47 is fixed coaxially with the gear, and the small gear 47 and the gear 37 mesh with each other. Further, the bracket 39 is biased by a coil spring 50 in the direction in which the slide base 22 is accommodated, that is, toward the rear.

A deceleration mechanism is constituted by the gear 37, the small pulley 41a, the pulley 42, the shaft 43, the belt 44, the small gear 45, the gear 46, and the small gear 47. and motor 4
1, the rack part 34a, and therefore the moving member 3
A driving force applying mechanism is configured to apply a driving force to 3.

Next, the slide base 22 and therefore the tray 2
The container 29 is locked to the tray 21 until the container 1 reaches the storage position in the housing 6, and when the tray 21 reaches the storage position, the container 2
The locking/releasing means for releasing the locked state of the tray 9 and the tray 21 and locking the tray 21 with respect to the horizontal chassis 18 will be explained.

As shown in FIGS. 5, 6, 11, and 12, at the right end of the horizontal chassis 18 and to the left of the rail portion 18b, there is a slide that projects upward and extends linearly in the front-rear direction. A portion 18c is formed, and a protrusion 34d is provided on the right side surface of the rack member 34 in correspondence with the slide portion. On the opposing surfaces of the slide portion 18c and the protrusion 34d, there is a first groove that faces the slide base 22 and therefore the tray 21 when it is in the storage position in the housing.
A recess 18d and a second recess 34e are formed. On the other hand, as shown in FIG. 10, a small projecting portion 22e projecting leftward is formed at the right end of the slide base 22. This overhang 22e
is located between the slide portion 18c and the protrusion 34d, and the first recess 18d and the second recess are located in the protrusion.
Opening 22f (shown in the fifth diagram) that can face the recess 34e
is provided. A spherical movable piece 52 that can engage with the first recess 18d and the second recess 34e is arranged within the opening 22f. Here, the dimension indicated by "da" in FIG. It's getting smaller. Also, the dimensions indicated by db in FIG. 12, that is, the protrusion 34d and the slide portion 18c.
The distance between any one of the facing surfaces of the movable piece 52 and the bottom surface of the recess facing the first surface of the first recess 18d and the second recess 34e is slightly larger than the outer diameter of the movable piece 52.

The first recess 18d, the second recess 34e and the opening 2
2f coaxially face each other, the rear end portion of the slide base 22, which is a component of the tray 21, engages with a regulating protrusion 53 protruding from the rear end of the horizontal chassis 18, and the horizontal chassis 18 of the tray 21 Movement in the tray storage direction (rearward) relative to the tray is restricted. Further, when the first recess 18d, the second recess 34e, and the opening 22f face each other, the front end of the protrusion 34d provided on the rack member 34, which is a component of the moving member 33, is inserted into the protrusion 34d. The movable member 33 comes into contact with the front edge of an opening 22g formed near the right end of the slide base 22 to restrict movement of the movable member 33 in the tray protrusion direction (forward) relative to the tray 21.

The first recess 18d and the second recess 34e described above
, the opening 22f, the movable piece 52, and the opening 22
g and the regulating protrusion 53, the first recess 18d, the second
When the recess 34e and the opening 22f face each other, the movement of the tray 21 in the tray storage direction with respect to the horizontal chassis 18 is restricted, and the movement of the moving member 33 in the tray 2
1, the container 29 is locked relative to the tray 21 until the slide base 22 and therefore the tray 21 reach the storage position within the housing 6. A locking/releasing means is provided for releasing the locking state of the container 29 with the tray 21 and locking the tray 21 with respect to the horizontal chassis 18 when the container 21 reaches the storage position.

Note that the shape of the movable piece 52 is not limited to a spherical shape, and may be, for example, a cylindrical shape. However, by making the shape of the movable piece 52 spherical or cylindrical, it is possible to use very inexpensive and high-precision parts such as general-purpose steel balls as the movable piece, and the locking/releasing means described above can be used as the movable piece. It also becomes easier to assemble. Furthermore, as is particularly clear in FIG. 12, the cross-sectional shape of the second recess 34e is trapezoidal. Rack member 3 with second recess 34e formed
4 from a relatively flexible material such as resin, by forming the second recess 34e that engages with the movable piece 52 made of a hard material into a trapezoidal shape, the second recess 34e can be made of a relatively flexible material such as resin. The contact pressure angle with the movable piece 52 becomes constant, and the operation of the movable piece 52 becomes stable. Further, as shown in FIGS. 6 and 12, the first recess 18d provided in the slide portion 18c of the horizontal chassis 18 has a U-shaped cross section. The horizontal chassis 18 is made of a processed steel plate, and by forming the first recess 18d in the U-shape as described above, the formation of the first recess is extremely easy.

As shown in FIGS. 3, 6, and 10, a board 54 is fixed to the lower surface of the front end of the horizontal chassis 18, and a pair of detection switches 55 and 56 is fixedly installed. On the other hand, as shown in FIG. 7, the front end of the bracket 39 provided on the lower surface of the lateral chassis 18 has a bent portion 3 that can engage the detection switch 55.
9a is formed. That is, bracket 3
The detection switch 55 is activated when the robot 9 moves forward. Further, as shown in FIGS. 5 and 10, an engaging protrusion 29d is provided on the lower surface of the container 29, which engages with the detection switch 56 when the container swings to the lower limit position. Note that the downward swing limit position of the container 29 is referred to as a non-supporting position of the container, and the upward swing limit position is referred to as a support position. The disk placed on the disk placement plane 29e provided at the free end of the container 29 is placed on a turntable, which will be described later, when the container reaches the non-supporting position. Further, when the container 29 is in the supporting position, the disk mounting plane 29e of the container 29 is
is parallel to the disk carrying surface of the turntable. Further, a pair of disk mounting planes 29e of the container 29 are provided on both sides of an opening formed in the center of the free end of the container. Substrate 54
The tray 21 and the cover member 23 are arranged on the upper side by, for example, engaging a part of the slide base 22 when the tray 21 consisting of the slide base 22 and the cover member 23 reaches the protruding position outside the housing, that is, the disk exchange position. A detection switch 58 is provided for detecting when the disk carrier comprising the container 29 has reached the steam protrusion position.

A lock/release means including the first recess 18d and the second recess 34e described above, and the bracket 39.
Then, the detection switch 55 and related small peripheral members detect that the disk holding section including the tray 21 has reached the storage position in the housing 6, and the driving force provided by the motor 41 etc. is applied. A stop positioning means is provided for stopping the operation of the mechanism and for positioning the disk carrier.
Further, the stop positioning means and the detection switch 56 stop the operation of the driving force applying mechanism including the motor 41 when the disc 26 is placed on the turntable, that is, when the performance position is reached. In addition, a stop/reversal means is configured to reverse the driving force applying mechanism when a load is applied to the tray 21 to prevent the tray from being housed in the housing. Note that the detection switch 55 is set to the first
In contrast, the detection switch 56 will be referred to as a second detection switch.

A disk carrying section consisting of the tray 21 (consisting of the slide base 22 and the cover member 23) and the container 29, a support mechanism including the horizontal chassis 18 as a support member, a rear leg mechanism including the columnar members 30b, etc., and a cylindrical A front leg mechanism including a member 32a and the like, and retainers 24a and 24b.
, the bearing member 24c, and the holding members 19, 2
0, a moving member 33 consisting of a rack member 34 and a plate 35, a driving force applying mechanism including a gear 37 and a motor 41, the above-mentioned stopping/reversing means consisting of a detection switch 56 and the above-mentioned stop positioning means, and related thereto. The disc 26 to be played is supported by the peripheral small members and is moved in a first predetermined direction (back and forth direction) and a second predetermined direction perpendicular thereto (up and down direction) to a performance position. A disk transport mechanism is configured.

Next, a description will be given of the playing means provided within the housing 6 for performing disk performances.

Figure 3, Figure 7, Figure 13, Figure 16 and Figure 1
As shown in FIG. 7, a carriage 63 carrying optical pickup means (not shown) for reading information from the disk 26 is disposed on the lower surface of the horizontal chassis 18. A rack portion 63a is provided at the right end of the carriage 63 and extends in the front-rear direction, which is the direction in which the carriage moves. At the left end of the carriage 63, that is, on the opposite side of the carriage from the rack part 63a, there is a pair of guide shafts 64 and 65 that extend parallel to each other in the horizontal direction (in this case, the front-rear direction) and are vertically spaced apart.
is inserted. The carriage 63 is guided by guide means consisting of these guide shafts 64 and 65. A support stand 66 is fixed to the lower surface of the horizontal chassis 18. A pair of contact surfaces 66a and 66b are provided on the right side of the support base 66 and are parallel to each other. The guide shaft 64, which is disposed above of the pair of guide shafts, is fixed to the contact surface 66a by a pair of front and rear fixing members 68a and screws 68b. In addition, the lower guide shaft 6
5 is in contact with the contact surface 66b and is fixed by a pair of front and rear fixing members 68c. Further, a detection switch 69 for detecting the movement limit position of the carriage when a part of the carriage 63 engages with the support base 66 is installed via an adjustment member 70 for adjusting the position of the detection switch. installed.

The horizontal chassis 18, the support base 66, and the like constitute a support mechanism that supports the guide means consisting of the guide shafts 64 and 65.

The horizontal chassis 18, the slide base 22, and the cover member 23 are provided with openings 18e, 22h, and 23e within the movement range of the carriage 63 so as not to block the irradiation light emitted from the optical pickup means to the disk recording surface. are formed respectively.

As shown in FIG. 8, a rack portion 6 provided on the carriage 63 is provided on the lower surface of the horizontal chassis 18.
A holding member 72 is arranged to rotatably support a gear 71 meshing with the gear 3a at its front end. The holding member 72 has a shaft (not shown) inserted into a hole (not shown) formed at the rear end of an intermediate plate 73 fixed to the lower surface of the horizontal chassis 18.
It is swingably attached via the Also attached to the holding member 72 is a motor 74 having a worm 74a fitted to its output shaft. The worm 74a is supported by the holding member 72 via a spherical bearing member 74b and a bearing member 74c. Further, a worm wheel 75 is provided which meshes with the gear 71 and the worm 74a.

The motor 74, the worm 74a, the worm wheel 75, and the like constitute a drive source that drives the gear 71. Further, the drive source and the gear 71 constitute a driving force applying means for applying a driving force to the rack portion 63a and thus the carriage 63. Note that the holding member 72 that holds the gear 71 and the drive source is a spring member 76.
, the gear 71 is connected to the rack part 6 of the carriage 63.
It is biased in the direction approaching 3a. Further, in order to prevent unnecessary rocking of the holding member 72 in the direction in which the gear 71 and the rack portion 63a are separated, a prevention screw 77 that engages with the holding member 72 is screwed onto the intermediate plate 73. There is.

Figures 3, 4, 6, 10 to 1
As shown in FIG. 3 and FIGS. 18 to 21, a support wheel 81 serving as a turntable that supports the disk 26 is disposed in the direction of movement of the carriage 63. As shown in FIG. The support wheel 81 is directly rotationally driven by a spindle motor 82. The support wheel 81 is slidable in the vertical direction and is equipped with a coil spring 81a.
It has a movable part 81b which is given an upward bias force by. A leg mechanism 84 is attached to the horizontal chassis 18, which is disposed on the opposite side of the carriage 63 with respect to the spindle motor 82, and which extends vertically on an extension of the locus of movement of the light irradiated onto the disk 26. As is particularly clear in FIG. 20, this leg mechanism 84 includes a substantially cylindrical bolt member 84a that rotatably fits into the horizontal chassis 18 and has an enlarged diameter at the lower end;
Nut 84b screwed onto 4a and bolt member 84
a spring washer 84c which cooperates with the enlarged diameter portion at the lower end of the bolt member 84a and the nut 84b to fix the bolt member to the horizontal chassis 18; a cap 84d which is screwed onto the upper end portion of the bolt member 84a; It is constituted by a screw 84e which is screwed into a female threaded portion formed on the inner periphery and whose upper end can come into contact with the inner surface of the cap 84d. That is, with the cap 84d on the fixed side, first tighten the nut 84b.
and loosen the screw 84e, and then remove the bolt member 84.
By rotating a, the height of the leg mechanism can be adjusted.

In addition to the leg mechanism 84, on the horizontal chassis 18, a pair of leg mechanisms 85 and 86 are arranged substantially symmetrically with respect to the extension line of the movement trajectory of the optical axis of the irradiated light and extend in the same direction as the leg mechanism 84. It is provided.
These leg mechanisms 85 and 86 are constructed in exactly the same way as the leg mechanism 84, and their heights can be adjusted. A first adjustment member 88 is fixed to the upper end of each of the leg mechanisms 84, 85, and 86.
Further, a support shaft 89 is fixed to the first adjustment member 88 in the vicinity of the leg mechanism 84 on an extension of the movement trajectory of the optical axis. The support shaft 89 extends substantially parallel to the optical axis, that is, in the vertical direction, and swingably supports the second adjustment member 90 carrying the spindle motor 82. As is particularly clear in FIGS. 18, 19, and 21, a cylindrical pin 92a whose lower end is enlarged in diameter is fitted into the swinging end of the second adjustment member 90. A spring washer 92b is interposed between the enlarged diameter portion of the pin 92a and the second adjustment member 90. Further, a screw 92c is inserted through the pin 92a. This screw 92c is also inserted through a long hole 88a formed in the first adjusting member 88 and protrudes above the first adjusting member. First adjustment member 8
A nut 92d is screwed into a screw 92c protruding from the top. Further, a long hole 90a is formed in the second adjustment member 90 at a position a predetermined distance from the pin 92a, and a shaft member 93 is inserted through the long hole. The pin 92a and the shaft member 93 are preferably arranged on the same circumference around the swing center of the second adjustment member 90. The shaft member 93 consists of a threaded part 93a, an enlarged diameter part 93b, and a hexagonal head 93c, the threaded part 93a and the hexagonal head 93c are coaxial, and the axial center of the enlarged diameter part 93b is the threaded part 93a and the hexagonal head 93c. It is offset by a predetermined amount with respect to the axial center of 93c. Note that a cover 9 is provided on the horizontal chassis 18 to cover the first adjustment member 88 and the second adjustment member 90.
4 is fixed. The threaded portion 93a is inserted into a hole 88b formed in the first adjustment member 88 and projected onto the first adjustment member.
A nut 93d is screwed into the threaded portion 93a protruding from the first adjustment member 88. That is, by loosening the nuts 93d and 93d, grasping the hexagonal head 93c of the shaft member 93, and rotating the shaft member 93, the second adjustment member 90 is adjusted to the first adjustment member 8.
It oscillates relative to 8.

The above-mentioned pin 92a and spring washer 92
b, the screw 92c, the nut 92d, the shaft member 93, and the like constitute a fixing means that can fix the second adjusting member 90 to the first adjusting member 88 at any swing position. Note that the leg mechanisms 84, 85, 86,
First adjustment member 88, support shaft 89, second adjustment member 9
0 and the above-mentioned fixing means are included in the support mechanism consisting of the horizontal chassis 18 and the like.

The support wheel 81, the spindle motor 82, the carriage 63, the driving force applying means including the motor 74 and applying driving force to the carriage 63, the holding member 72, the horizontal chassis 18, etc. The mechanism, guide means consisting of guide shafts 64 and 65, and peripheral small members related thereto constitute a playing means for performing a disc performance.

Here, a means for stopping the light irradiation of the optical pickup means when the disk carrying part consisting of the tray 21 and the container 29 protrudes from the housing 6 will be explained.

As shown in FIGS. 3, 6, 10, and 15, an irradiation light stop switch 96 is provided on the substrate 54 fixed to the lower surface of the lateral chassis 18. This irradiation light stop switch 96 is provided between the laser light irradiation device of the optical pickup means and the power supply circuit, and when the switch is turned off, the supply of power supply voltage to the laser light irradiation device is cut off. Therefore, the light irradiation of the laser light irradiation device is stopped. The irradiation light stop switch 96 is a normally closed switch, and as is clear in FIG. The contact point of the irradiation light stop switch is forcibly opened by always being engaged with the lower surface.

Next, a description will be given of the clamping mechanism that clamps the disk 26 that has been transported to the performance position.

Figures 2 to 6 and Figures 9 to 12
As shown in the figure, a pair of bent portions 18f are provided at the rear end of the horizontal chassis 18 extending upwardly to the left and right.
A swinging member 98 is swingably attached to the rear end portion of the swinging member 98 via a pin 97. Here, the position shown by the solid line in FIG. 12, that is, the position where the pressing member to be described later comes into contact with the disk placed on the support wheel 81, is referred to as the clamp position of the swinging member 98. The position indicated by the two-dot chain line is referred to as the non-clamped position of the swinging member. The swing member 98 swings between the clamp position and the non-clamp position. A coil spring 100 whose one end is connected to the horizontal chassis 18 is connected to the rear end of the swinging member 98.
is biased towards the clamping position by. A cylindrical member 101 is screwed to the front end of the swinging member 98, that is, the swinging end thereof, at its upper end. A pressing member 102 is disposed within the cylindrical member 101 so that its outer periphery is surrounded by the cylindrical member 101 . Note that a restriction portion 101a is provided at the lower end of the cylindrical member 101 to restrict downward movement of the pressing member 102. The pressing member 102 clamps the disk 26 placed on the support wheel 81 in cooperation with the support wheel, and has a cylindrical portion 102a formed on the disk pressing back surface, that is, the upper circle. Note that the swinging member 98 is arranged to face the upper surface of the pressing member 102.

A spherical bearing member 104 made of steel is inserted into a cylindrical portion 102a formed in the pressing member 102. Also, the swinging member 98 has a bearing member 1.
A circular opening 98a having an opening diameter smaller than the diameter of 04 is formed.

On the other hand, a plate 35 forming a part of the moving member 33
At the rear end part, a support part 1 is formed extending linearly in the front-rear direction at the right end part of the horizontal chassis 18.
Engagement pin 1 that slidably engages with 8g at its tip.
06 is provided protrudingly. The right end portion of the swinging member 98 is bent downward, and the cam portion 9 slidably engages with the engagement pin 106 in the bent portion.
8b is provided. The cam portion 98b has a tapered portion that slopes upward toward the rear, so that the sliding member 98 is caused to swing as the engagement pin 106 moves back and forth. The cam portion 98b engages with the engagement pin 106 near the support portion 18g. In this way, the cam portion 9
The engagement position of 8b with the engagement pin 106 is set by the support part 18.
By making it very close to g, the swinging member 98
Most of the force of the coil spring 100 that biases the is applied to the support portion 18g. Therefore, almost no load is applied to the plate 35, and thus the movable member 33 and the slide base 22, and the movable member 33 and the slide base 22 operate smoothly. The engagement pin 106 includes a pin body 106a and a pair of rollers 106b and 106b, which are rotatably attached to the tip of the pin body 106a and engage with the support portion 18g and the cam portion 98b, respectively.
06c. These rollers 106b
and 106c, the supporting portion 18g
The resistance force during relative movement between the cam portion 98b and the engagement pin 106 is reduced, so that the moving member 33 and the swinging member 98 operate smoothly, and the engagement pin 1
This means that the lifespan of the 06 etc. will be longer.

The above-mentioned swing member 98 and coil spring 10
0 and the pressing member 102 constitute a clamping mechanism that clamps the disc 26 that has been transported to the performance position.

Note that the detection signals emitted from the aforementioned detection switches 55, 56, 58, and 69 are
8 is transmitted to a control unit 110 fixedly installed on the lower surface of the device. The motors 41 and 74 and the spindle motor 82 operate at predetermined timings described later by operation signals sent from the control section in response to each of these detection signals.

Next, the operation of the front-loading disc player having the above-mentioned structure will be briefly explained along with the playing procedure with reference to FIGS. 22 and 23.

First, as shown in FIG. 1, the disk 26 is fitted into the arcuate outer peripheral recess 23b of the tray 21 protruding from the housing 6, and placed on the disk placement surface 29e of the container 29. Incidentally, the operation of protruding the disk carrying portion consisting of the tray 21 and the container 29 out of the housing is performed by following a process completely opposite to the storage operation described below, and therefore will not be described in detail.

Once the disk 26 is supported, the loading button of the operating section 16 shown in FIG. 2 is pressed. Then, the motor 41 starts rotating, the gear 37 rotates, and the movable member 33 consisting of the rack member 34 and plate 35 is driven rearward. However, as shown in FIG. 22, the movable piece 52 fitted into the opening 22f formed in the overhang 22e of the slide base 22 engages with the second recess 34e provided in the rack member 34. By doing so, the rack member 34, that is, the movable member 33 is attached to the slide base 22.
and the cover member 23, and therefore the container 29 cannot move relative to the tray 21 consisting of the cover member 23.
is locked against. Therefore, the rotation of the gear 37 causes only the moving member 33 and the tray 21 to move rearward. Note that, as the tray 21 moves backward, the movable piece 52 rolls onto the slide portion 18c while being engaged with the second recess 34e.

Here, we will explain the case where the listener notices that the disk has been inserted incorrectly and stops the rearward movement of the tray 21 by hand, or the case where an abnormal load is applied that prevents the tray 21 from being stored due to other reasons. .

When a force is applied to prevent storage of the tray 21, the bracket 39 supporting the gear 37 is moved forward by the reaction force of the driving force that drives the moving member 33. A bent portion 39a formed on the bracket 39 by forward movement of the bracket
engages the detection switch 55 to operate the detection switch. On the other hand, since the container 29 is in the upward swinging position, the detection switch 56 does not operate. The control unit 110 determines that the abnormal load has been applied when only the detection switch 55 is activated, and causes the motor 41 to operate in reverse.

The moving member 3 is moved without the above abnormal load being applied.
3 and the rearward movement of the tray 21 continues, the tray 21 reaches a predetermined storage position in the housing 6 and the rear end of the slide base 22 is brought into contact with the rear end of the horizontal chassis 18 by the constituent members of the tray 21. 10 and 23.
The state shown in the figure will be reached. As is clear from FIG. 23, at this time, the first recess 18d, the second recess 34e, and the opening 22f coaxially oppose each other. 33
Since the rearward driving force is still applied to the slide base 22, the movable piece 52 leaves the second recess 34e and is formed in the horizontal chassis 38. It enters into the first recess 18d. This will cause tray 2
1 is locked to the horizontal chassis 18, and at the same time the movable member 33 is locked to the tray 21,
Therefore, the lock state of the container 29 with respect to the tray 21 is released. Thus moving member 3
The backward movement of only 3 continues until the state shown in FIG. 12 is reached. That is, the rack member 34 of the moving member 33
An engaging protrusion 34c formed in the container 29 slides along a cam hole 29c provided in the container 29, and the container 29 swings downward while supporting the disk. Therefore, the center hole of the disk 26 fits into the movable part 81b of the support wheel 81, and the disk 26
6 is placed on the support wheel. At this time, the disk mounting surface 29e of the container 29 is separated from the disk, and the disk 26 becomes rotatable together with the support wheel 81.

On the other hand, as shown in FIG. 12, as the container 29 swings downward, the moving member 33
The swinging member 98, which is engaged with the engagement pin 106 projecting from the plate 35 at the cam portion 98b, swings downward due to the biasing force of the coil spring 100, and the swinging end of the swinging member A pressing member 101 provided on the disc 2 is pressed against the disc 2.
6 is clamped.

When the moving member 33 reaches the backward movement limit position,
The bracket 39 is moved forward by the reaction force of the driving force that drives the moving member 33, and the detection switch 55 is therefore operated. At this time, container 2
9 also operates the detection switch 56, and the control unit 110 determines that both detection switches 55 and 56 have operated, indicating that the disc 26 has reached the performance position, and turns the motor 41 on. Make it stop. Performance is possible in this state. As shown in FIG. 15, at the same time that the tray 21 including the slide base 22 is housed in the housing 6, the actuator 9 of the irradiation light stop switch 96 is turned off.
6a and the lower surface of the slide base 22 is released, the irradiation light stop switch is turned on, and power supply voltage is therefore supplied to the laser light irradiation device of the optical pickup means.

When an operation signal for performance is issued, the spindle motor 82 rotates, and at the same time, the carriage 63 begins to operate and the performance begins.

When the detection switch 69 detects that the carriage 63 has reached the movement limit position after the performance, the carriage 63 and the support wheel 81
is stopped, and at the same time, the motor 41 starts reverse operation. Therefore, as mentioned before, tray 2
1 and the container 29 protrude out of the housing 6 by following a process completely reverse to that described above. Immediately before the tray 21 is completely projected out of the housing 6, the detection switch 58 is operated, and the tray is accurately stopped at the projected position.

The disk is thus recovered.

Effects As detailed above, in the front loading disk sprayer according to the present invention, by making the container 29 swingable with respect to the tray 21, the disks can be transported in the direction perpendicular to the turntable rotation surface. The mechanism for this is constituted by the container and only a few members, for example, the moving member 33 that engages with the container through the cam hole 29c. Therefore, the cost is decreasing.

Further, in the front loading disk holder according to the present invention, when the container is in the disk carrying position, the disk mounting plane of the container is parallel to the disk carrying surface of the turntable. Because of this configuration, the disk is stable on the container and can be smoothly transferred onto the turntable without tilting.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the entire front loading disc player according to the present invention, FIGS. 2 and 3 are exploded perspective views showing the internal structure of the front loading disc player, and FIGS. 4 to 9. 10 to 12 are partially detailed perspective views of FIGS. 2 and 3; FIGS. 10 to 12 are plan views, front views, and right side views showing a part of the internal structure, and FIGS. FIG. 21 is a partially detailed view of the internal structure, and FIGS. 22 and 23 are diagrams for explaining the operation of the internal structure. Explanation of symbols of main parts, 2...Front panel, 2a, 18e, 22f, 22g, 22h, 2
2e...Opening, 3...Rear panel, 4...Bottom plate, 5...Side plate, 6...Housing, 8...Transformer, 9...Cover, 10...Power supply cord,
12, 13, 14...Vertical chassis, 16...Operation unit, 18...Horizontal chassis, 18a, 18b...Rail part, 18c...Slide part, 18d...First
Recessed portion, 18f, 35a, 39a...Bending portion, 1
8g... Supporting part, 19, 20... Pressing member, 19
a, 20a, 22a...fall prevention part, 21...tray, 22...slide base, 22b...supporting part, 22c, 22d, 88a, 88b, 90a...
...Elongated hole, 22e...Protrusion, 23...Cover member, 23a...Support protrusion, 23b...Circular outer periphery recess, 23c...Notch, 23d...Disc guide protrusion, 24a, 24b... ...retainer, 24c,
104... Bearing member, 25... Decorative panel, 26... Disc, 29... Container, 29
a, 32c, 50, 81a, 100...Coil spring, 29b...Swing shaft, 29c...Cam hole, 29d, 34c...Engaging protrusion, 29e...Disk mounting plane, 30a, 32d, 33a ,68
b, 84e, 92c...screw, 30b...column member, 30c, 32e...damper, 30d, 84
b, 92d, 93d... nut, 32a... cylindrical member, 32b... shaft member, 33... moving member,
34...Rack member, 34a, 63a...Rack portion, 34b...Protrusion, 34d...Protrusion, 34e...
...Second recess, 35...Plate, 37, 46, 7
1... Gear, 39... Bracket, 40... Sub bracket, 41, 74... Motor, 41a...
Small pulley, 42...Pulley, 43...Shaft,
44... Belt, 45, 47... Small gear, 52...
...Movable piece, 53...Regulation protrusion, 54...Substrate, 5
5, 56, 58, 69...detection switch, 63...
...carriage, 64,65...guide shaft,
66... Support stand, 66a, 66b... Contact surface, 6
8a, 68c...fixing member, 70...adjusting member,
72... Holding member, 73... Intermediate plate, 74
a...Worm, 74b...Spherical bearing, 7
4c... Bearing member, 75... Worm wheel,
76...Spring member, 77...Prevention screw, 8
1... Support wheel, 81b... Movable part, 8
2... Spindle motor, 84, 85, 86...
Leg mechanism, 84a... Bolt member, 84c, 92b
...Spring washer, 84d...Cap,
88...First adjustment member, 89...Support shaft, 90...
...Second adjustment member, 92a, 97...Pin, 93...
... Shaft member, 93a ... Threaded part, 93b ... Expanded diameter part, 93c ... Hexagonal head, 94 ... Cover, 96
... Irradiation light stop switch, 96a ... Actuator, 98 ... Swinging member, 98a ... Circular opening, 98b ... Cam portion, 101 ... Cylindrical member,
101a...Restriction part, 102...Press member, 10
2a...Cylindrical portion, 106...Engagement pin, 106a
...Pin body, 106b, 106c...Roller,
110...Control unit.

Claims (1)

[Scope of Claims] 1. A disc transport mechanism that transports a disc to be played onto a turntable in a player housing, the disc transport mechanism being provided so as to protrude from the player housing in a first predetermined direction so as to be freely retractable. a front-loading disk player, comprising: a tray; and a container provided on the tray to support the disk and move it in a second predetermined direction; an arcuate outer circumferential recess for guiding the disk in the second predetermined direction, the container swings between a carrying position and a non-carrying position to carry the disk at its free end, and the container supports the disk at its free end; an opening is formed in the section, and a disk mounting plane is provided on both sides of the opening, and the disk mounting plane is substantially parallel to the disk carrying surface of the turntable when the container is in the carrying position. A front loading disc player characterized by: 2. The disk transport mechanism includes a moving member provided on the tray and engaged with the container via a cam means, and a driving force applying means for applying a driving force to the moving member, and the cam means 2. A front loading disk player according to claim 1, wherein said container is swung in response to movement of said moving member.