JPH0349144B2 - - Google Patents

Description

[Detailed description of the invention]

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 for automatically transporting a disc to a performance position. Background technology Audio disc with sound grooves on the surface or
A disk such as a digital audio disk on which PCM signals are recorded is carried by a disk holder that protrudes from the housing of the player so that it can be freely stored, and is completely stored inside the housing. A so-called front-loading disk player is already known, which allows the space on the top surface to be used effectively. Recently, such front-loading disk players have been equipped with a disk transport mechanism that includes the above-mentioned disk carrying section and automatically transports the disc to the performance position, and a clamp mechanism that clamps the disc transported to the performance position. A device has been developed that eliminates the effort required for disk loading. When positioning the disk placed on the disk carrier outside the player 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 perpendicular thereto. and then transported. In order to achieve this conveyance, for example, in the front loading disk player proposed by the present applicant as Utility Model Application No. 152508/1988 (Utility Model Application No. 60048/1983), a support is provided as shown in FIG. A horizontal chassis 150 is a member, a tray 151 is mounted on the horizontal chassis so as to be movable in a direction parallel to the turntable rotating surface, that is, a front-rear direction (arrow Y direction and the opposite direction), A container 152 is provided to be movable in the Z direction (direction of arrow Z and the opposite direction) and constitutes a disk holding part together with the tray 151, and a rack part having a cam hole serving as an interlocking means that engages with the container 152 and extending over almost the entire length thereof. a cam member 153 which is a movable member and is provided on the tray 151 so as to be movable in the front-rear direction; and a driving force applying mechanism that applies a driving force to the cam member 153 in the front-rear direction, including a gear that meshes with the rack portion. (not shown), the container 152 is locked to the tray 151 until the tray 151 reaches the storage position in the player housing, and when the tray 151 reaches the storage position, the tray 152 of the container 152 is locked.
1 and the tray 151.
Locking and releasing means (not shown) are provided for locking the transverse shear 150 to the transverse shear 150. On the other hand, the clamping mechanism includes a pressing member 15 that performs a disc clamping action in cooperation with the turntable.
5, which extends within the player housing in the tray movement direction (back and forth direction: arrow Y direction and the opposite direction) and is swingable between the clamp position and the non-clamp position at the end on the tray storage direction side. A pressing member 155 is supported at the free end by
A swinging member 156 that rotatably supports the swinging member 156, a coil spring 157 that urges the swinging member toward the clamping position, and a swinging member 156 that is provided within the player housing so as to be movable in the tray movement direction. a cam body 159 that includes a cam portion 158 that can engage with the cam member 153;
and a coil spring 160 that urges the cam body 159 in the tray protrusion direction (forward: direction of arrow Y). As described above, in the front loading disc players that have already been developed, the clamp mechanism has a large number of parts, resulting in a complex structure and high cost. Further, the upward movement of the pressing member 155, that is, the movement toward the clamp release position, is performed by the above-mentioned pair of coil springs 157, 16.
Since this is done through mutual antagonism of 0, the operation may become uncertain. Furthermore, the cam member 1
The driving force applying mechanism for driving the cam body 159 as well as the cam body 53 also needs to be large, which poses a problem in reducing the size of the player as a whole. OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned points, and its purpose is to provide a player with a simple structure, low cost, and a clamping mechanism that operates reliably. It is an object of the present invention to provide a front loading disc player that can be easily downsized. Structure of the Invention As is clear from the conceptual diagram of the mechanism in FIG. 21, the front loading disc player according to the present invention includes a housing, a playing means provided in the housing including a turntable, and a disc to be played. a disk conveyance mechanism that has a disk carrying part that carries the disk, and that carries the disk between a collection position and a performance position by protruding and retracting the disk carrying part with respect to the housing; a clamping mechanism configured to clamp the disc, the clamping mechanism including a pressing member that cooperates with the turntable to perform a disc clamping action, and a pressing member that is provided within the housing and extends along the moving direction of the disc carrier. a swinging member that is supported at its end on the storage direction side of the disk holding part so as to be swingable between a clamped position and a non-clamped position, and whose free end rotatably supports the pressing member; and the disk holding portion includes a holding means that engages with the swinging member and holds the swinging member at the non-clamped position when the disk holding portion protrudes outside the housing. It is characterized by the fact that it is provided. Embodiments Hereinafter, a front loading disc player as an embodiment of 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. As shown in FIG. 1, the front surface of the housing 2, that is, the front panel 3, is provided with a disk support portion, which will be described later, that can protrude outside the housing.
A rectangular opening 3a extending in the left-right direction is provided. However, the term "left and right" as used herein refers to the front direction indicated by the arrow Y, and the direction of the arrow X is the left direction. Further, the arrow Z direction indicates upward. Although not shown, a group of switches are provided on the rear panel 3 to operate the disc player. As shown in FIGS. 2 and 4, a main chassis 5 as a support member is provided within the housing 2. As shown in FIGS. As is clear from FIGS. 2 to 5, a longitudinal sub-chassis 6, which is a support end, is arranged on the upper surface of the right end of the main chassis 5 and extends in the front-rear direction, and is fixed to the main chassis 5 with screws. ing. The upper surface of this sub-chassis 6 has a V-groove 6 as a guide path extending in the front-rear direction.
a is formed. Further, on the sub-chassis 6, a longitudinal holding member 7 formed by bending a steel plate or the like is provided.
It is fixed with a screw so as to face the groove 6a. On the other hand, a support body 9 made of resin or the like is disposed near the opening 3a formed in the front panel 3 for storing a protruding disk support part, and is attached to the main chassis 5 with screws or the like. ing. A tray 10 is provided between this support body 9 and the pressing member 7. Tray 1
Reference numeral 0 denotes a cover member 11 made of resin or the like, and a slide base 12 made of processed steel plate or the like and fixed to the right side of the cover member to correspond to the sub-chassis 6.
It is formed by etc. Slide base 12
A V-groove 12a serving as a guide path is formed to face the V-groove 6a provided in the sub-chassis 6, and between the two V-grooves there are, for example, two first grooves rotatably held by a retainer 14. Bearing member 1
4a is interposed. In addition, V grooves 6a and 12
For example, there are two second belling members 14 near a.
b is arranged and is in contact with the surface of the slide base 12 opposite to the sub-chassis 6. The second
The bearing member is also rotatably held by the retainer 14. The above-mentioned presser member 7 includes the first bearing member 14a and the second bearing member 14.
b towards the sub-chassis 6. The above-mentioned sub chassis 6, a pair of V grooves 6a,
12a, first and second bearing members 14a,
14b, the retainer 14, and the holding member 7, the right side of the tray 10 (a part of the disk carrying section to be described later), which is composed of the cover member 11, the slide base 12, etc., can be freely reciprocated only in the front-back direction. A slide guide mechanism is configured as a guide means that supports and guides at least two locations. Further, the support body 9 disposed near the opening 3a formed in the front panel 3 is connected to the tray 10.
(Accordingly, the above-mentioned disk holding part) is a slide plate which is movably supported in the front and back direction and at least at one place, and is fixed to the cover member 11 (a part of the tray 10). 15 in a slidable manner. By means of these slide guide mechanisms and the support body 9, the tray 10 (therefore, the disk holding section)
A guide support mechanism is configured to support the entire body movably with respect to the housing 2. In addition, tray 1
A decorative panel 16 that fits into and closes the opening 3a of the front panel 3 is attached to the front end of the front panel 3. Here, as shown in FIG. 5, projections 7a and 7b that can be engaged with a retainer 14 (for example, shown in FIG. 4) are provided at both front and rear ends of the presser member 7, which forms a part of the slide guide mechanism. ing. In the slide guide mechanism described above, the retainer 14 moves as the first and second bearing members 14a and 14b roll when the tray 10 reciprocates on the sub-chassis 6, but the movement stroke of the retainer is Calculated, the movement stroke of the tray 10 is half. The projections 7a and 7b limit the movement of the retainer to the end of its travel stroke, i.e.
It acts as a regulating means that regulates the tray 10 at two positions corresponding to the ends of its movement stroke. As shown in FIG. 5, the presser member 7 is designed such that the bearing pressing force at a portion of the presser member that substantially corresponds to the rearward movement restriction position of the retainer 14 is smaller than the bearing pressing force at other portions. A slit 7c is formed in. Various methods can be considered to make the bearing pressing force of one part of the presser member 7 smaller than the bearing pressing force of other parts, such as providing a special mechanism for this purpose. can be held extremely cheaply. Moreover, not only the slit 7c but also the first and second bearing members 14a, 14b when the retainer 14 reaches the backward movement restriction position.
A similar effect can also be obtained by forming a recess in the holding member 7 into which the second bearing member 14b can fit, corresponding to the position of the holding member 7. As is clear from FIGS. 1, 4 and 6, the tray 10 includes a disk 18 (for example, as shown in FIG. A pair of longitudinal support members 19 and 20 are provided for supporting the disk and moving the disk in the vertical direction (in the direction of arrow Z and in the opposite direction). The pair of supporting members 19 and 20 are collectively referred to as a container, and the container together with the tray 10 constitutes a disk holding section. The support members 19 and 20 extend parallel to each other in the front-rear direction, and are each swingably attached to the tray 10 at one end in the width direction. A cover member 11, which is a component of the tray 10, is provided with a cylindrical recess 11a whose axial center coincides with the vertical direction. Openings 11b are formed at the four corners of the cylindrical recess 11a, and portions 19a and 20a of the free ends of the pair of support members 19 and 20 protrude from the openings 11b into the cylindrical recess. . As is particularly clear from FIG. 7, one of the portions 19a and 20a protruding from the opening 11b, for example 19a, has a
a support portion 19b that supports the main surface of the disk 18;
A tapered disk guide portion 19c is formed continuous with the support portion and engageable with the outer periphery of the disk 18. Further, a portion 20a of the other support member 20 is also formed with a support portion 20b and a tapered disk guide portion 20c that are symmetrical to the portion 19a of the support member 19. Note that the swing support shafts 19d and 20d of the pair of support members 19 and 20
are arranged so that when the free end of each support member swings in a direction approaching the turntable, which will be described later, the free end moves toward the center of rotation of the turntable. That is, the support member 1 for placing the disk 18 on the turntable
The swing support shafts 19d and 20d are arranged so that the tapered disk guide portions 19c and 20c of the respective support members are separated from the outer periphery of the disk as the support members 9 and 20 swing.
are arranged. Here, the above-mentioned supporting parts 19b and 20b are designed to support the outer peripheral edge of the main surface of the disk 18, that is, the part where no information is recorded. As is clear from the above, tray 1
The disk 18 inserted into the cylindrical recess 11a (of which is formed in the cover member 11) of No. Therefore, it is possible to support the disk only on the part of the main surface of the disk where no information is recorded, and there is no fear that the disk recording surface will be damaged by contact with fine particles. There is. As shown in FIGS. 3 to 6, a longitudinal moving member 23 extending in the front-rear direction is disposed on the right side of the slide base 12, which is a component of the tray 10, and It is movably attached to the The movable member 23 is made of resin or the like, and has a rack portion 23a formed at its lower end over substantially the entire length. As shown in FIGS. 3 and 4, a pulley 25 is rotatably attached to the right side of the front end of the sub-chassis 6, and has a coaxial gear 24 that meshes with a rack 23a formed on the moving member 23. ing. A motor 26 having a small pulley 26a fitted to its output shaft is disposed behind the pulley 25, and a belt 27 is installed between the small pulley 26a and the pulley 25. The gear 24 described above,
A motor 26 including a pulley 25 and a small pulley 26a
and the belt 27 constitute a driving force applying mechanism that applies a driving force to the moving member 23. As shown in FIGS. 3 and 6, tray 1
A longitudinal lever member 30 extending in the left-right direction is arranged near the rear end of the vehicle. This lever member 3
There are pins 30a extending in the left and right direction at both left and right ends of the
is provided protrudingly, and the lever member 30 is rotatably attached to (the cover member 11 of) the tray 10 by the pin. One pivoting end of the lever member 30, in this case the lower end, is pivotally attached to the moving member 23. Specifically, a pin 30b extending toward the right is provided at the lower right end of the lever member 30, and this pin 30b can freely slide into a U-shaped recess 23b formed at the rear end of the moving member 23. It is fitted in. As is clear from FIG. 6, the lever member 30 comes into contact with the lower surface of each free end of the support members 19 and 20, which are containers, at its other rotating end, that is, at the end opposite to the pin 30b with respect to the pin 30a. are in contact with each other. On the other hand, as also shown in FIG. 6, a coil spring 31 is interposed between both support members 19 and 20, and both support members are moved in the direction of arrow P in FIG. is energized by That is,
The moving member 23 is moved backward (arrow Y) with respect to the tray 10.
3), the lever member 30 serving as the interlocking means moves in the direction of the arrow Q in FIG.
direction, thereby each support member 1
9 and 20 are configured to swing in the direction of arrow P (as shown in the fourth figure) by the biasing force of the coil spring 31. Next, both support members 19 and 20, which are containers, are locked to the tray 10 until the tray 10 reaches the storage position in the housing 2, and when the tray 10 reaches the storage position, the support members 19 and 20 are locked.
A locking/releasing means for releasing the locked state of the tray 10 and locking the tray 10 with respect to the sub-chassis 6, which is a supporting member, will be explained. As shown in FIGS. 2 to 5, on the upper surface of the sub-chassis 6 and to the right of the V-groove 6a, there is a
A slide portion 6c is formed that extends parallel to the groove. However, this slide portion 6c is simply a planar portion and is not distinguished in shape from other portions. Further, as shown in FIG. 6, a projecting portion 23d is provided on the left side surface of the moving member 23 in correspondence with the sliding portion 6c. A first recess 6d and a second recess 23e are formed on opposing surfaces of the sliding portion 6c and the overhanging portion 23d, respectively, so as to face each other when the moving member 23, and therefore the tray 10, is in the storage position within the housing 2. It is formed. 5 shows a state in which the tray 10 is housed in the housing 2, and FIGS. 1 to 4 show a state in which the tray 10 protrudes outside the housing 2. On the other hand, a small protrusion 12b protruding rightward is formed at the rear end of the slide base 12, which is a part of the tray 10. The protruding portion 12b is located between the sliding portion 6c and the protruding portion 23d, and the protruding portion is provided with a round opening (no reference numeral) that can face the first recess 6d and the second recess 23e. It is being Inside the opening is a first
A spherical movable piece 33 that can engage with the recess 6d and the second recess 23e is arranged. Here, the dimension indicated by da in FIG. 3, that is, the moving member 2
The distance between the opposing surfaces within the range of relative movement between the overhanging portion 23d of No. 3 and the sliding portion 6c on the sub-chassis 6 is smaller than the outer diameter dimension of the movable piece 33.
Also, the dimension indicated by db in FIG. 3, that is, one of the opposing surfaces of the overhanging portion 23d and the sliding portion 6c, and the recessed portion facing the one surface of the first recessed portion 6d and the second recessed portion 23e. The distance from the bottom surface of the movable piece 33 is slightly larger than the outer diameter of the movable piece 33. When the first recess 6d, the second recess 23e, and the opening (no reference numeral) provided in the protrusion 12b of the slide base 12 coaxially face each other, the tray 1
The bent front end portion 12c (shown in the third figure) of the slide base 12, which is a component of the slide base 12, engages with the front end portion of the sub-chassis 6, so that the movement of the tray 10 in the tray storage direction (rearward) with respect to the sub-chassis 6 is restricted. It's getting old. Furthermore, when the first recess 6d, the second recess 23e, and the opening provided in the protrusion 12b of the slide base 12 face each other, movement of the moving member 23 in the tray protrusion direction (forward) with respect to the tray 10 is restricted. It is becoming more and more common. The first recess 6d and the second recess 23e described above,
The opening formed in the protrusion 12b and the movable piece 33
When the first recess 6d, the second recess 23e, and the opening face each other, the movement of the tray 10 in the tray storage direction with respect to the sub-chassis 6 is restricted, and the movement of the moving member 23 in the tray protrusion direction with respect to the tray 10 is restricted. by means of regulatory measures regulating the
The support members 19 and 20, which are containers, are locked to the tray 10 until the tray 10 reaches the storage position in the housing 2, and when the tray 10 reaches the storage position, the locked state of both support members to the tray 10 is maintained. A lock/release means is provided for releasing the tray 10 and locking the tray 10 with respect to the sub-chassis 6, which is a supporting member. In addition, the lock/release means and the sub chassis 6
the above-mentioned guide support mechanism including the tray 10 and the support members 19, 20, etc., the drive force applying mechanism including the moving member 23, the motor 26, etc., and the peripheral small members related thereto. The disk 18 to be played is supported by the first predetermined direction (back-and-forth direction: direction of arrow Y and its opposite direction) and a second predetermined direction perpendicular thereto (vertical direction: direction of arrow Z and its opposite direction). A disk conveying mechanism is configured to move the disk and convey it to a performance position, that is, onto a turntable to be described later. That is, the disk transport mechanism carries the disk to be played on the disk holding section and moves the disk between the recovery position and the playing position by protruding and retracting the disk holding section with respect to the player housing 2. In other words, it is transported between Next, a description will be given of the playing means provided in the housing 2 for performing disk performances. As shown in FIGS. 2, 4 and 5,
A chassis 35 serving as a mounting plate on which equipment is mounted is disposed between the sub chassis 6 and the support body 9. The mechanical chassis 35 has four legs 36,
As is clear from FIG. 4, an insulator 37 which is a vibration isolating member is attached to the main chassis 5 which is a supporting member.
It is attached at the leg portion via. The insulator 37 is a main chassis 5 which is a supporting member.
A rigid columnar leg member 38 is screwed into and fixed to the columnar leg member 38 by a screw portion formed at a lower end thereof, and a rigid columnar leg member 38 is formed into a substantially cylindrical shape and is externally fitted onto the columnar leg member 38 at a predetermined interval, and the leg member 38 is fixed at a lower end portion thereof. A viscoelastic member 39 is fixed to the member. Viscoelastic member 39
is fitted into a circular opening 36a formed at the lower end of the leg portion 36 of the mechanical chassis 35, which is a mounting plate, at the outer periphery near the upper end thereof. Also,
The columnar leg member 38 is made to protrude from the upper end of the viscoelastic member 39, and the above-mentioned opening 36 is formed in the protrusion.
A flange portion 38a is provided that sandwiches the upper end portion of the viscoelastic member with a slight gap from the edge portion a. As is clear from FIGS. 8 to 10, the mechanical chassis 35 has a substantially rectangular opening 35a extending from its center to its rear end, and a carriage 42 is inserted into the opening. . Carriage 42 incorporates optical pickup means (not shown) for continuing information from disk 18. On the right side of the carriage 42 is a guide shaft 43 that extends in the front and back direction.
are arranged and attached to the mechanical chassis 35 at both ends thereof. Carriage 4
The right end portion of 2 is slidably fitted onto the guide shaft 43. On the other hand, as is clear from FIGS. 11a and 11b, an adjustment screw 44 made of a resin such as nylon is screwed into the left end of the carriage 42, and the tip of the adjustment screw is connected to the mechanical chassis. It is slidably abutted on the upper surface of 35. The carriage 42 is guided by guide means consisting of a guide shaft 43 and an adjusting screw 44. Here, the adjustment screw 44 will be explained in detail. The adjustment screw 44 is provided not only as a part of the guide means for guiding the carriage 42, but also for adjusting the optical pickup means built into the carriage 42, for example, in the tangential direction. Therefore, the adjustment screw 44 is fixed with a screw so that it does not loosen after adjustment. As shown in FIGS. 14a to 14c, a slit 44a is formed on the outer periphery of the threaded portion of the adjusting screw along the axial direction of the screw, and the female thread and the slit into which the adjusting screw is screwed are formed. Adhesive is filled in between. The slit 44a reaches the screw head 44b and passes through the screw head in the axial direction of the screw. By making the slit 44a and penetrating the screw head in this way, the slit 44 opened on the screw head 44b after the adjustment work is completed.
It becomes possible to fill the adhesive material through the opening a, which simplifies the screw fixing work. Slit 44a
If the adjustment screw 44 does not pass through the screw head 44, the adjustment screw 44 will be screwed into the carriage 42 with adhesive applied to the inside of the slit 44a in advance, and in this case, the adhesive will be applied outward as it is screwed. There is a concern that this will overflow, making the work extremely complicated. Further, the outer diameter of the threaded portion of the adjustment screw 44 is slightly larger than the root diameter of the female screw to which it is screwed. By setting the outer diameter of the threaded portion in this way and providing the slit 44a, the adjusting screw 44 is screwed into the female thread with a predetermined elastic force. Therefore, even if some external force is applied between the adjustment operation and the adhesive filling operation, the adjustment screw will not loosen and the adjustment state will not fluctuate. Note that the same effect can be obtained even if the root diameter of the threaded portion of the adjustment screw 44 is slightly larger than the inner diameter of the female thread. Restore description. As shown in FIGS. 9 and 10 and FIGS. 11a and 11b, the carriage 42
The mechanical chassis 35 that reciprocally carries the
A screw shaft 46, which is disposed near and parallel to the guide shaft 43, is rotatably attached at both ends.
A motor 47 as a driving source is provided in front of the screw shaft 46, and the screw shaft 46 is driven by a pulley 47.
It is rotationally driven via a, 47b and a belt 47c. As shown in FIGS. 10 and 11a and 11b, an arm member 49 is attached at one end to the right end of the carriage 42. As shown in FIGS. A pair of half nuts 50 are attached to the other end of the arm member 49.
a and 50b are integrally provided and are screwed onto the screw shaft 46. The half nuts 50a, 50b are arranged so as to sandwich the screw shaft 46 from each other, and are separated by a predetermined distance in a direction parallel to the axial center of the screw shaft 46. A conversion mechanism for converting the rotational force of the screw shaft 46 into a carriage movement force is formed by the above-mentioned arm member 49 and the half nuts 50a and 50b as female screw members provided integrally with the arm member. It is configured. Further, the conversion mechanism, screw shaft 46, motor 47, etc. constitute a driving force applying means for applying driving force to the carriage 42. Here, the above conversion mechanism will be explained in detail. As is particularly clear from FIG. 12, the arm member 4
9 has a pair of protrusions 49 that protrude in directions parallel to the axial center of the screw shaft 46 and in opposite directions.
a, 49b are provided. Protrusions 49a and 4
9b has a substantially O-shaped cross section perpendicular to the direction of extension, and as is particularly clear from FIG. The arm member 49 is attached to the carriage 42 by fitting each of the protrusions into a pair of formed U grooves 42a and 42b. In addition, Figure 11a
As shown in FIG. 2, the carriage 42 is provided with a retaining member 51 to prevent the protrusions 49a and 49b from coming off from the respective U grooves 42a and 42b. As mentioned above, the cross section is approximately O in the U grooves 42a and 42b.
By fitting the shaped protrusions 49a and 49b, the arm member 49 can be attached to the screw shaft 4 centering on the attachment end to the carriage 42.
It is possible to rotate within a plane perpendicular to the center of the axis of 6. Although various other configurations are conceivable in which the arm member 49 can be rotated relative to the carriage 42, the structure can be extremely simplified by using the U grooves 42a, 42b and the protrusions 49a, 49b. It's getting easier. Furthermore, the separation distance between the pair of U grooves 42a and 42b: Sa (shown in the 13th figure) is larger than the width dimension of the arm member 49: Sb (shown in the 12th figure). is movable in a range of Sa-Sb on a protrusion parallel to the axial center of the screw shaft 46. However, a protrusion 42c formed on the carriage 42 between a tongue-like portion 49c protruding from the arm member 49 and the arm member.
are elastically sandwiched, so that the arm member 49 does not wobble in the direction parallel to the axial center of the screw shaft 46. For example, as shown in FIGS. 8 and 9, a turntable 54 that supports the disk 18 is disposed in front of the carriage 42 in the direction of movement thereof. Turntable 54 is mechanical chassis 3
It is directly rotationally driven by a spindle motor 55 fixedly attached to 5. As is clear from Figure 9,
The turntable 54 has a center hole 1 of the disk 18.
A tapered guide portion 54a is formed to fit into the turntable 8a (shown in the first diagram) to align the center of the disk with the rotation center of the turntable. The above-mentioned turntable 54, spindle motor 55, carriage 42, driving force applying means for applying driving force to the carriage 42 including the screw shaft 46, guide shaft 43, etc., and related thereto. A playing means for performing disk performances is constructed by the peripheral small members. As is clear from the above, the performance means is provided on the mechanical chassis 35, which is a mounting plate, and is separated from the aforementioned disk transport mechanism and is attached to the housing 2 separately from the disk transport mechanism. There is. As will be explained in detail later, the mechanical connection between the playing means and the disk conveying mechanism is released at least during the playing of the disk. Further, as described above, the mechanical chassis 35 on which the playing means is mounted is fixed to the main chassis 5, and thus to the housing 2, via the insulator 37 as a vibration isolating member. By doing this, almost no external vibrations are transmitted to the playing means including the optical pickup means, and smooth playing can be performed. Next, the playing position, i.e. turntable 54
The clamping mechanism that clamps the disk 18 conveyed upward will be explained. As shown in FIG. 2, FIG. 3, and FIG. A swinging member 58 is disposed extending along the opposite direction (opposite direction), and a support shaft 58a is disposed at the end (rear end) of the swinging member 58 on the side in the storage direction of the disk holder.
It is swingably attached to the mechanical chassis 35 via. The support shaft 58a is the turntable 54
parallel to the plane of rotation, in this case in the left-right direction (arrow
direction and its opposite direction). Here, the position of the swinging member 58 shown in FIG. 3 is referred to as a non-clamping position, and the position where the swinging member has swung downward by a predetermined angle is referred to as the clamping position of the swinging member. The swinging member 58 swings between the clamped position and the unclamped position. Note that the swinging member 58 is biased toward the clamping position by a coil spring 59 arranged behind the support shaft 58a. A disk-shaped pressing member 60 is attached to a spherical bearing member 60 at the front end, that is, the free end, of the swinging member 58.
It is rotatably mounted around its axis via a. This pressing member 60 cooperates with the turntable 54 to perform a disk clamping action. As is particularly clear from FIG. 15, the pressing member 60 is held such that a portion of the pressing member protrudes from the free end in the direction from the swinging support end of the swinging member 58 toward the free end. has been done. In this case, about one-third of the diameter of the pressing member 60 is made to protrude from the free end. Also, as shown in FIG. 15, the swinging member 58 supports the pressing member 60 on the support shaft
It is held by a pair of claws 58b at both ends in the direction parallel to a, that is, in the left-right direction.
This allows the pressing member 60 to move in a plane perpendicular to the support shaft 58a (indicated by arrow R in FIG. 3).
It is possible to rotate within a predetermined range. As shown in FIGS. 3 and 15, the swinging portion of the swinging member 58 is provided with a lever member 63 extending parallel to the swinging member. Lever member 63
A shaft 63a extending parallel to the support shaft 58a of the swinging member 58 is protruded from the rear end of the lever member at a position approximately one-fourth of its total length.
When the shaft 63a engages with the engaging claw 58d formed in the lever member 63, the lever member 63
It is attached to 8. Therefore, the lever member 6
3 is rotatable around a shaft 63a. One end of the lever member 63, in this case the rear end, is pivoted to the support shaft 58a. More specifically, as shown in FIGS. 8 to 10, a bracket portion 64 is provided at the rear end of the mechanical chassis 35, extending substantially upward and having a tip thereof bent forward. The rear end of the lever member 63 is pivotally engaged with a shaft 64a formed at the tip of the bracket portion to extend parallel to the support shaft 58a. More specifically, the shaft 6 of the bracket portion 64 is attached to the rear end of the lever member 63.
4a Clamping parts 63b and 63 sandwiched in the vertical direction
c is formed. On the other hand, the other rotating end of the lever member 63, that is, the front end 63d, is in contact with the peripheral edge of the surface of the pressing member 60 facing the turntable 54. By providing the lever member 63, the pressing member 60 is held parallel to the rotating surface of the turntable 54 when the swinging member 58 is in the non-clamping position. As shown in FIG. 3, the swinging member 58 includes:
An engaging protrusion 63 formed on the front end of the lever member 63 when the swinging member reaches the clamping position.
A regulating portion 58e that engages with the lever member 58e and regulates rotation of the lever member is provided. Also, although this may be a little off-topic, the engaging pawl 58d formed on the swinging member 58 and engaging with the shaft 63a of the lever member 63 has flexibility. Furthermore, a gripping portion 63b formed on the lever member 63 and engaging with the shaft 64a of the bracket portion 64;
63c also has flexibility. That is, the pivoting center and the rear end of the lever member 63 are connected to the swinging member 5.
8 and the bracket portion 64 (therefore, the support shaft 58a
). When the swinging member 58 reaches the clamp position, the front end 63d of the lever member 63 separates from the outer peripheral edge of the pressing member 60, but at the same time, the lever member 63 also becomes freely movable. As described above, the regulating portion 58e is provided, and the lever member 63
By elastically supporting the lever member, the lever member is restrained with a predetermined elastic force, and resonance etc. of the lever member due to external vibrations can be suppressed.
Further, when attaching the lever member 63 to the disk member 58, it is only necessary to bend the above-mentioned engaging claw 58d and insert the lever member, making the attaching work simple. Further, when connecting the rear end portion of the lever member 63 and the shaft 64a of the bracket portion 64, the connection is completed simply by bending the clamping portions 63b, 63c and sandwiching the shaft 64a therebetween. As is particularly clear from FIG.
A pair of supporting members 1 serving as a container according to the reciprocating movement of the
Lever member 30 for swinging 9 and 20
is engaged with the swinging member 58 at its other rotating end, that is, at its upper end. For details, see the swinging member 5
A linear cam portion 58g is formed on the lower surface of the lever member 8 along the tray moving direction (back and forth direction), and the upper end portion of the lever member 30 is slidably engaged with the linear cam portion. That is, the lever member 30 is rotated in the direction of arrow Q by the backward movement of the moving member 23 after the tray 10 has reached the storage position in the housing 2, and the swinging member 58 is swung toward the clamping position. It is designed to move. Here, the upper end portion of the lever member 30, that is, the portion that engages with the linear cam portion 58g of the swinging member 58 is a roller member 30d. In this way, by providing the roller member 30d, the upper end portion of the lever member 30 and the linear cam portion 58g can smoothly slide against each other. Further, even after the swinging member 58 reaches the clamping position, the lever member 30 rotates by a predetermined angle in the direction of the arrow Q, and the roller member 30d of the lever member 30 rotates by a predetermined angle.
is spaced apart from the linear cam portion 58g. With this configuration, the mechanical connection state between the playing means (described above) mounted on the mechanical chassis 35 together with the swinging member 58 and the moving member 23, which is a part of the disk transport mechanism, can be adjusted to suit the disk performance. The inside will be completely lifted. Therefore, there is no concern that external vibrations will be transmitted from the disk transport mechanism to the playing means, and smooth playing can be performed. The lever member 30 described above, the swinging member 58,
The disk 18 transported to the performance position, that is, onto the turntable 54, is moved by the coil spring 59, the pressing member 60, the lever member 63 provided on the swinging member 58, and the peripheral small members related thereto. A clamp mechanism for clamping is configured. As shown in FIGS. 3, 5 and 6,
On the upper surface of the right rear end of the cover member 11, which is a constituent member of the tray 10 that forms a part of the disk carrying section, a linear cam portion 58g formed in the swinging member 58 of the clamp mechanism allows the tray to be attached to the outside of the housing. A roller member 65 that engages when protruding is provided. This roller member 65 acts as a holding means that engages with the swinging member 58 and holds the swinging member 58 in the non-clamped position when the disk carrying portion protrudes outside the player housing. As shown in FIG. 3, a detection switch 68 is fixedly installed below the front end of the subchassis 6. When the detection switch 68 is engaged with a protrusion (no reference numeral) protruding from a predetermined position of the moving member 23, the tray 10 is completely housed in the housing 2, the disk clamp is completed, and the tray 10 is
A signal is emitted to detect the completion of protrusion out of the housing. Further, as shown in FIG. 10, when a part of the carriage 42 carrying the optical pickup means is engaged with the lower surface of the mechanical chassis 35, it is detected that the carriage has reached the movement limit position. A detection switch 69 is provided for this purpose. Note that the detection signals emitted from the detection switches 68 and 69 described above are transmitted to a control section (not shown) provided within the housing 2. In addition, the motors 26 and 47 and the spindle motor 55 operate at predetermined timings described later by operation signals sent from the control section in response to each of these detection signals. In addition, the mechanism as the above-described embodiment is shown conceptually and abbreviated in terms of wirework in the conceptual diagrams of the mechanism in FIGS. 21 and 22. These conceptual diagrams of the mechanism are drawn based on the following conceptual abbreviation drawing regulations. Rules for conceptual abbreviation (a) As a general rule, the drawing should be viewed from a single viewpoint.
However, the boundaries between diagrams at different viewpoint positions are indicated by two-dot chain lines. (b) A single member or group of members is indicated by a single solid line. However, portions that act as relatively wide force acting surfaces and portions that perform different functions even though they are on the same member are indicated by solid line frames as necessary. (c) Entry of reference marks and component names is permitted. (d) Write an arrow indicating the direction of movement, and write a number indicating the order of movement near the arrow. (e) Characteristics, conditions, vertical directions, mutual relationships between members, forms of movement, etc. of members are expressed using symbols as shown in the attached table. Please pay attention to consistency with existing symbols. (f) The ability to restore (reversibility) from a schematic drawing to a projected or perspective view is not required. (g) Allow abstraction and omission of parts related to the inventive concept with an emphasis on function.

【table】

[Table] Next, the operation of the front loading disc player having the above-mentioned configuration will be briefly explained along with the playing means with reference to FIGS. 18 to 20 and FIGS. 23 and 24. The front loading disk player performs a disk loading operation according to the operational flow shown in FIG. 23, and performs an unloading operation according to the operational flow shown in FIG. 24.
In the conceptual diagrams of the mechanism shown in FIGS. 21 and 22, the operations of the front-loading disc player are indicated by circles in the order of their operations. Further, in the flowcharts shown in FIGS. 23 and 24, numbers for each of these operations are attached to the corresponding steps. First, as shown in FIG. 1, the disk 18 is fitted into the cylindrical recess 11a of the tray 10 protruding from the housing 2, and the support members 19 and 20 (see FIGS. 6 and 21), which are containers, are inserted. ). After placing the disk 18, the housing 2
Press the loading switch among the switches (not shown) provided on the front panel 3 of the computer.
Then, the motor 26 starts to rotate normally, the gear 24 moves forward, and the moving member 23 is driven backward. however,
For example, as shown in FIGS. 3 and 22a,
Movable piece 33 fitted into an opening (no reference numeral) formed in protrusion 12b of slide base 12
is engaged with the second recess 23e formed in the projecting portion 23d of the movable member 23, so that the movable member 23 moves the tray 10 including the slide base 12.
The support members 19 and 20 are therefore locked relative to the tray 10. Therefore, the rotation of the gear 24 causes only the moving member 23 and the tray 10 to move rearward. In addition,
As the tray 10 moves backward, the movable piece 33 engages with the second recess 23e and rolls on the slide portion 6c of the sub-chassis 6. When the tray 10 reaches the storage position in the housing 2, the front bent portion 12c of the slide base 12, which is a component of the tray 10, comes into contact with the front end of the sub-chassis 6, and the rearward movement of the tray is restricted.
The state shown in FIG. 16 and FIG. 22b is reached.
Note that FIG. 17 is a plan view of this state. 1st
As is clear from FIG. 6, at this time the first recess 6
d, the second recess 23e and the opening (no reference numeral) of the protrusion 12b are substantially coaxially opposed to each other. Since the rearward driving force is still applied to the moving member 23, the front end bent portion 12c of the slide base 12
As shown in FIG. 22c, the movable piece 33 is moved to the second position as shown in FIG.
It leaves the recess 23e and enters the first recess 6d. As a result, the tray 10 including the slide base 12 is locked with respect to the sub-chassis 6, and at the same time, the locking state of the moving member 23 with respect to the tray 10, and therefore the locking state of the supporting members 19 and 20, which are containers, with respect to the tray 10 is released. . In this way, only the moving member 23 continues to move backward, resulting in the states shown in FIGS. 18 and 19. That is, as only the movable member 23 moves backward, the lever member 30 rotates downward about the pin 30a, and as a result, the supporting members 19 and 20 supporting the disk 18 as shown in FIG. swings downward. Therefore, the center hole 1 of the disk 18
8a (shown in the first diagram) fits into the tapered guide portion 54a of the turntable 54, and the disk 18 is placed on the turntable. Moreover, as shown in FIG. 20, at this time, the support member 19 (and 2
The supporting portion 19b (and 20b) of disk 1
8, disk 18 is on turntable 54
It can be rotated with. On the other hand, as shown in FIG. 18, as the supporting members 19 and 20 swing downward, the linear cam portion 58 is attached to the roller member 30d of the lever member 30.
The swinging member 58 engaged at point g swings downward due to the biasing force of the coil spring 59, and the pressing member 60 provided at the free end of the swinging member is pressed against the upper surface of the disk 18. disk 18
is clamped. When the moving member 23 reaches the backward movement limit position,
A protrusion (not shown) protruding from a predetermined position on the front end of the moving member engages with the detection switch 68, thereby operating the detection switch. The aforementioned control section (not shown) detects that the detection switch 68 is activated and a detection signal is issued, and that the tray 10 is being driven in the storage direction, and then controls the disk holding section including the tray. When the disk reaches the storage position in the housing 2, it is determined that the disk clamping is completed, and the motor 26 is stopped. In this state, disc performance is possible. Here, if the listener notices that the disc 18 has been inserted incorrectly and stops the storage operation of the tray 10 by hand, or for some other reason, the tray 10
A case will be described in which an abnormal load is applied that prevents the housing from being stored in the housing 2. If the storage operation of the tray 10, and hence the disk carrying section, is interrupted midway through, the detection switch 68 described above will not operate forever. The storage operation takes almost a certain amount of time,
The control section determines that the abnormal load has been applied if the detection switch 68 does not operate even after a certain period of time has passed since the motor 26 started rotating. In this case, the motor 26 is reversely operated to drive the tray 10 in the projecting direction. When the loading of the disk 18 is completed without the above-mentioned abnormal load being applied, the spindle motor 55 rotates, and at the same time the motor 47 rotates, the carriage 42 (for example, see FIG. 10) begins to operate, and disk performance begins. . When the performance ends and the detection switch 69 detects that the carriage 42 has reached its travel limit position, the carriage 42 and turntable 54 are stopped, and at the same time, the motor 26 begins to reverse operation. Therefore, as shown in FIG.
0 and the supporting members 19 and 20 protrude out of the housing 2 by following a process completely opposite to that described above. When the tray 10 reaches the protruding position outside the housing 2, a protrusion (not shown) protruding from a predetermined position on the rear end of the moving member 23 activates the detection switch 68.
The detection switch operates by engaging with the switch. The control unit (described above) detects that the detection switch 68 is activated and a detection signal is issued, and that the tray 10 is being driven in the protruding direction. It is determined that the outer protruding position has been reached and the motor 26 is stopped. The disk is thus recovered. Effects of the Invention As detailed above, in the front loading disk player according to the present invention, the clamping mechanism that clamps the disk carried by the disk carrying part included in the disk carrying mechanism and conveyed onto the turntable, Pressing member 60 that cooperates with the table to perform a disk clamping action
The disc support member extends along the movement direction within the player housing, is supported swingably between a clamped position and a non-clamped position at the end on the storage direction side of the disk carrier, and is pressed at the free end. It is comprised of a swinging member 58 that rotatably supports the member. In this way, while the cam portion 58g is formed over, for example, approximately the entire length of the swinging member, the moving member 23 for transmitting a driving force to the swinging member to cause it to swing is attached to the cam portion. By using a very simple member (lever member 30) or direct engagement, the cam body 159 and the cam can be used as provided in the clamping mechanism of an already developed front loading disc player. Coil spring 1 that biases the body in the direction of tray protrusion
60 etc. can be made unnecessary. Therefore, it is becoming easier to reduce the number of parts and costs. Further, unlike in already developed clamp mechanisms, the upward movement of the pressing member, that is, the movement toward the clamp release position, is not performed through the mutual antagonism of the two coil springs 157 and 160. , the operation is reliable. Further, in the front loading disc player according to the present invention, the holding means engages with the swinging member to hold the swinging member in an unclamped position when the disc supporting portion projects outside the player housing. (Roller member 65) is provided on the disk carrier, thereby making it possible to downsize the player as a whole.
This is because, assuming that this holding means is not provided, the length of the swinging member is such that the movable member is engaged until the disk carrier is retracted and the swinging member is unclamped. , i.e., a length equal to the movement stroke of the tray, and move the swinging member to the clamping position as the moving member moves after the tray reaches the storage position in the player housing. The total length including the length for the length is required. Therefore, the total length of the swinging member becomes too large, making it difficult to make the entire player compact. By providing the holding means, the overall length of the swinging member can be kept relatively short, making it easier to downsize the player as a whole.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the entire front loading disc player according to the present invention, and FIGS. 2 to 4 are plan views showing a part of the internal structure of the front loading disc player and including a partial cross section. , side view and front view, Figures 5 and 6
The figure is a plan view of the tray and its peripheral members, FIG. 7 is a sectional view related to FIG. 6, and FIGS. 8 to 10.
The figures are a plan view, a side sectional view, and a bottom view of a mechanical chassis and the equipment mounted thereon. Figures 11a and b, 12, 13, and 14a to 14c are details of some of the equipment. 15 is a plan view including a partial cross section of the mechanical chassis and the clamp mechanism mounted thereon, FIGS. 16 to 20 are diagrams for explaining the operation of the front loading disc player, and FIG. 21 22c to 22c are conceptual diagrams conceptually and wirework-illustrating the internal mechanism of a front loading disk player as an embodiment of the present invention, and FIGS. 23 and 24 are diagrams 1 to 22. A flowchart showing the operation flow of a wet front loading disc player in c.
FIG. 25 is a diagram showing the main parts of a front loading disc player that has already been proposed. Explanation of symbols of main parts, 2...Housing, 3
...Front panel, 3a, 11b, 35a, 3
6a...opening, 5...main chassis, 6c...
...Slide part, 6...Sub chassis, 6a, 12
a...V groove, 6c...slide part, 6d...first
Recessed portion, 7... Pressing member, 7a, 7b, 49a, 4
9b...Protrusion, 7c...Slit, 9...Support, 10...Tray, 11...Cover member, 11
a... Cylindrical recess, 12... Slide base, 1
2b...Protrusion part, 12c...Front end bent part, 14...
...Retainer, 14a...First bearing member, 1
4b...Second bearing member, 15...Slide plate, 16...Decorative panel, 18...Disc, 18a...Center hole, 19, 20...Support member, 19a, 20a...Part, 19b, 20b
... Support part, 19c, 20c ... Tapered disk guide part, 19d, 20d ... Swing support shaft, 23
...Moving member, 23a... Rack part, 23b...
U-shaped recess, 23d...projection, 23e...second
Recessed portion, 24... Gear, 25, 47a, 47b...
Pulley, 26, 47...Motor, 26a...Small pulley, 27...Belt, 30...Lever member, 3
0a, 30b... Pin, 30d, 65... Roller member, 31, 59... Coil spring, 33...
...Movable piece, 35... Mechanical chassis, 36... Leg, 37... Insulator, 38... Column leg member, 38a... Flange, 39... Viscoelastic member, 42... Carriage, 42a, 42b... U
groove, 42c... protrusion, 43... guide shaft,
44...adjustment screw, 44a...slit, 44
b...screw head, 46...screw shaft,
49... Arm member, 49c... Tongue-shaped portion, 50
a, 50b...half nut, 51...retention member, 54...turntable, 54a...tapered guide portion, 55...spindle motor, 58
...Swinging member, 58a...Support shaft, 58b...
Claw, 58d...Engagement claw, 58e...Restriction part, 58
g... linear cam part, 60... pressing member, 60a
... Spherical bearing member, 63 ... Lever member,
63a, 64a... shaft, 63b, 63c... clamping part, 63d... front end part, 63e... engaging protrusion, 6
4... Bracket section, 68, 69... Detection switch.

Claims (1)

[Claims] 1. By having a housing, a playing means including a turntable and provided in the housing, and a disk carrying part for carrying a disk to be played, and causing the disk carrying part to protrude from and be housed in the housing. It includes a disk conveyance mechanism that conveys the disk between a collection position and a performance position, and a clamp mechanism that clamps the disk conveyed to the performance position, and the clamp mechanism cooperates with the turntable to clamp the disk. a pressing member that is provided in the housing, extends along the moving direction of the disc holder, and is oscillated between a clamped position and a non-clamped position at an end of the disc holder on the storage direction side; a swinging member that is movably supported and rotatably supports the pressing member at its free end; A front loading disc player, further comprising a holding means that engages with the swinging member to hold the swinging member in the unclamped position.