JP2004055040A - Disk drive mechanism of on-vehicle disk player - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the disk drive mechanism of an on-vehicle disk player in which a guide member can be manufactured at a low cost while attaining thinning of the guide member by adopting a movable guide member. <P>SOLUTION: In the disk drive mechanism of the on-vehicle disk player which is constituted so as to drive a disk by holding it between the guide member 3 being at a lowered position and a roller 4 and so as to make the guide member 3 and the roller 4 separate from the disk by raising the member 3 and also lowering the roller 4 at the time of playing, compound material on whose surface of a metal plate a resin layer is preliminarily coated is used as the member 3 and the resin layer of the member 3 which is formed by carrying out the press processing of the compound material is made to be opposed to the roller 4. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disk transport mechanism of a vehicle-mounted disk player for recording and / or reproducing a disk such as a CD (compact disk) and a DVD (digital versatile disk), and in particular, a roller holding a disk between a guide member. The present invention relates to a disk transport mechanism of an in-vehicle disk player for loading and unloading the disk by rotationally driving the disk.
[0002]
[Prior art]
Generally, this type of in-vehicle disk player includes a lock mechanism for locking / unlocking a drive unit equipped with a turntable, a clamper, and the like with respect to a chassis, and a disk mechanism between a play position and an eject position. It has a disk transport mechanism for automatic transport. This disk transport mechanism is composed of a guide member fixed to the upper end on the front side (disk insertion port side) of the chassis, and rollers arranged so as to face or separate from the lower surface of the guide member. The rollers are rotated in both forward and reverse directions by using a motor as a drive source.
[0003]
In the thus-configured vehicle-mounted disk player, the disk is automatically conveyed between the play position and the eject position by rotating the roller while holding the disk between the guide member and the roller. You. When the disk is transported, the drive unit is locked with respect to the chassis, and the clamper and the turntable are separated from each other to secure a disk transport path. On the other hand, when the disc is transported to a position directly above the turntable, the disc is chucked between the turntable and the clamper at the play position by lowering the clamper. In this play position, the drive unit is unlocked with respect to the chassis, so that sound skipping does not occur even if vibration or impact is applied from the outside during play, and the roller is lowered to guide from the guide member. By separating them, the rotation of the disk is not hindered.
[0004]
As is apparent from the above description, in this type of in-vehicle disk player, a predetermined gap is required between the clamper and the upper surface of the disk in order to avoid interference with the disk being transported. When the drive unit is considered to be in the unlocked state, a gap is required above the clamper to allow vertical vibration, but when the guide member is fixed to the upper end of the chassis as described above, the guide member is In addition, since the clamper must be disposed at a further upper position, the height of the chassis is increased, which hinders the thinning of the in-vehicle disk player.
[0005]
Therefore, conventionally, as described in, for example, Japanese Patent Application Laid-Open No. 2002-117602, there has been proposed a disk transport mechanism capable of raising and lowering a guide member so as to reduce the thickness. The disc transport mechanism disclosed in the publication includes a guide member disposed on the chassis so as to be able to move up and down, and a roller disposed so as to approach or separate from the lower surface of the guide member, and the guide member is It is at the lowered position when the disk is transported, but moves to the raised position during play. In a vehicle-mounted disk player employing such a disk transport mechanism, since the disk transport path is defined by the guide member at the lowered position, the entire chassis including the space required for disposing the clamper above the disk transport path is provided. Can be shortened, and the thickness of the in-vehicle disk player can be reduced accordingly.
[0006]
[Problems to be solved by the invention]
By the way, in the case of the disk transport mechanism in which the guide member is movable (movable up and down) as described above, the mechanical strength required of the guide member is much higher than that of the disk transport mechanism in which the guide member is fixed to the chassis. In general, a metal plate having higher rigidity than a synthetic resin is used for the movable type guide member. In this case, if the guide member is formed only of the metal plate, the surface of the disk is easily damaged when the disk is transported. Therefore, it is necessary to take measures to prevent the surface of the disk from being damaged.
[0007]
Conventionally, as an example of such a scratch preventing means, a guide member formed of a metal plate and a part of the metal plate outsert with a synthetic resin material is known. The guide member thus configured can prevent the disk surface from being damaged by the synthetic resin material formed only at the portion that comes into contact with the disk while securing the overall rigidity by the metal plate. There is a problem that the production cost rises due to the necessity. Further, as another conventional example, a guide member in which a resin film having a low coefficient of friction is adhered to the surface of a metal plate, and a guide member in which a paint having a low coefficient of friction is spray-painted on the surface of the metal plate have been proposed. These guide members require a separate process of applying a resin film and spraying paint after pressing the metal plate, which not only raises the cost of manufacturing but also raises the cost of the resin film and paint in a hot and humid environment. However, there is also a problem that the particles are easily peeled off.
[0008]
The present invention has been made in view of such a situation of the related art, and an object of the present invention is to adopt a movable type guide member to reduce the thickness and to manufacture the guide member at low cost. To provide a disk transport mechanism for a disk player.
[0009]
[Means for Solving the Problems]
According to the present invention, a movable type guide member provided in the disk transport mechanism is formed by pressing a composite material in which a surface of a metal plate is coated with a resin layer in advance. By using such a guide member, the rigidity required for the movable type guide member can be secured by the metal plate, and the disk surface can be prevented from being damaged by the resin layer coated on the disk contact surface of the metal plate. Moreover, since the guide member can be manufactured only by pressing the composite material, the manufacturing process can be simplified and the cost can be reduced.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
The disk transport mechanism of the vehicle-mounted disk player according to the present invention includes a guide member disposed to be able to move up and down with respect to the chassis, and a roller disposed so as to be able to approach and separate from the lower surface of the guide member. At the time of conveyance, the disc is sandwiched between the guide member and the roller at the lowered position, and at the time of playing the disc, the guide member is raised and the roller is lowered so that the guide member and the roller are separated from the disc. In the disk transport mechanism of the in-vehicle disk player, the guide member is formed by pressing from a composite material in which a surface of a metal plate is coated with a resin layer in advance, and the resin layer is opposed to the roller.
[0011]
In the disk transport mechanism of the vehicle-mounted disk player thus configured, since the guide member is disposed so as to be able to move up and down with respect to the chassis, the space in the chassis is effectively used to promote the reduction in thickness. In addition, since the movable type guide member is formed by pressing a composite material in which the surface of the metal plate is coated with a resin layer in advance, the rigidity required for the guide member is secured by the metal plate. The guide member can be manufactured only by pressing the composite material while having the function of preventing the disk surface from being damaged by the resin layer, and the manufacturing process of the guide member can be simplified to reduce the cost.
[0012]
In the above configuration, it is possible to use a resin such as nylon or PET as the resin layer. However, a fluorine resin film having a low coefficient of friction is used as the resin layer, and this fluorine resin film is thermally welded to the surface of the metal plate. Is preferred.
[0013]
Further, in the above configuration, when a relief portion protruding from the lower surface to the upper surface is drawn in a portion facing the roller of the guide member, even when a tapered roller is used, the small diameter portion of the roller is larger than the guide member. There is no problem that the gripping force of the disk is reduced apart. In addition, since the drawing of the relief portion can be performed simultaneously with the pressing of the composite material, the manufacturing process of the guide member can be simplified also in this regard.
[0014]
【Example】
FIG. 1 is a plan view of an on-vehicle disk player according to an embodiment, FIG. 2 is a perspective view of the disk player with a top chassis removed, and FIG. 3 is a top view of the disk player. FIG. 4 is an exploded perspective view showing a drive unit, a guide member, a slide member and the like provided in the disc player, and FIG. 5 is a perspective view of a link mechanism provided in the disc player. FIG. 7 is a plan view of the link mechanism at the time of ejection, FIG. 7 is a plan view of the link mechanism at the time of play, FIG. 8 is an explanatory view of a slide member provided on the disc player at an eject position, and FIG. FIG. 10 is an explanatory view at a lock position, and FIG. 1 is a perspective view of the slide member at the time of ejection, FIG. 12 is a perspective view of the slide member at a half lock position, FIG. 13 is a perspective view of the slide member at the time of play, and FIG. 14 is a disk positioning provided in the disk player FIG. 15 is a front view of the disk positioning mechanism, FIG. 16 is a right side view of the disk positioning mechanism, FIG. 17 is a plan view of the disk positioning mechanism showing a mounted state of a small-diameter disk, and FIG. FIG. 19 is a front view of the disk positioning mechanism showing a mounted state of a disk, FIG. 19 is a plan view of the disk positioning mechanism showing a mounted state of a large-diameter disk, and FIG. 20 is a front view of the disk positioning mechanism showing a mounted state of a large-diameter disk. FIG. 21 is a plan view of the disk positioning mechanism showing the positioning operation of the large-diameter disk, and FIG. Is a cross-sectional view of a provided are guide member Reya.
[0015]
The in-vehicle disc player according to the present embodiment can use both large and small discs D having a diameter of 8 cm and a diameter of 12 cm. Hereinafter, a small-diameter disc having a diameter of 8 cm is denoted by a symbol SD as necessary. , A large-diameter disc having a diameter of 12 cm may be denoted by the symbol LD.
[0016]
As shown in FIGS. 1 to 3, the on-vehicle disk player includes a chassis 1 and a top chassis 2 forming an apparatus main body. The chassis 1 and the top chassis 2 are formed by bending a metal plate. A front plate 1c provided in front of the chassis 1 has a slit-shaped insertion opening 1d formed by cutting out an upper portion thereof, and a disk D (SD, LD) is inserted into the apparatus main body from the insertion opening 1d. Is discharged. The top chassis 2 is formed in a frame shape with its center portion largely cut out, and is fixed to the upper surface of the chassis 1 with screws. A guide member 3 and a roller which constitute a disk transport mechanism are provided below the top chassis 2. 4 are provided.
[0017]
As shown in FIG. 4, the guide member 3 has a flat plate portion 3a and a pair of side plate portions 3b bent on both left and right sides of the flat plate portion 3a. , Four drive pins 3c are implanted. The lower surface of the flat plate portion 3a has a gently tapered shape inclined downward from the substantially right and left central portions toward the two side plate portions 3b, and a pair of elongated reliefs projecting from the lower surface to the upper surface on both left and right portions. A portion 3d is formed, and a bent portion 3e protruding upward is formed on the front and rear edges of the flat plate portion 3a. Each drive pin 3c is engaged with a cam groove formed on a pair of left and right slide members, which will be described later, and when these slide members move in the front-rear direction, the guide member 3 moves relative to the chassis 1. To move up and down while maintaining a parallel state.
[0018]
As shown in FIG. 22, the guide member 3 is formed by pressing a composite material in which the surface of a metal plate 3A is coated with a resin layer 3B in advance, and the side plate 3b, the relief 3d and the folding A curved portion 3e is formed. The metal plate 3A only needs to have a rigidity enough to secure the mechanical strength required for the guide member 3, and the resin layer 3B is used when the disk D is sandwiched between the guide member 3 and the rollers 4 and transported. It suffices if it has lubricity that can prevent the surface of D from being damaged. In the case of the present embodiment, a 1 mm thick steel plate subjected to chromate treatment with trivalent chromium is used as the metal plate 3A, and a 20 μm thick fluorine-based resin film (ETFE: ethylene / tetrafluoroethylene) is used as the resin layer 3B. This fluorinated resin film is bonded to a steel sheet in advance to form a composite material. In addition, since ETFE generally has a property of being difficult to adhere to other members, a resin treatment is performed by heat-treating one side of the ETFE film with a primer, chemically bonding the primer and the film by heating, and welding the primer and the steel plate. The fluorine resin film as the layer 3B is bonded to a steel plate as the metal plate 3A. By thermally welding the resin layer 3B to the metal plate 3A by such a method, the resin layer 3B peels off from the metal plate 3A when the relief portion 3d and the bent portion 3e are drawn and bent by pressing. Nothing. The resin layer 3B may be coated on both upper and lower surfaces of the metal plate 3A, or may be coated only on the lower surface facing the roller 4.
[0019]
The roller 4 is formed in a tapered shape whose diameter gradually increases from the center toward both ends, and is driven to rotate in both forward and reverse directions by power from a motor (not shown). The roller 4 is rotatably supported by one end of a roller bracket 5, and the other end of the roller bracket 5 is rotatable by left and right locking plates 1 b (see FIG. 3) formed by bending the bottom surface of the chassis 1. It is supported by. Both ends of the roller 4 are also engaged with cam grooves of both slide members to be described later, and when these slide members move synchronously in the front-rear direction, the roller bracket 5 engages with the locking plate 1b. The roller 4 is moved up and down by rotating about the joint as a fulcrum. As a result, the disc D inserted from the insertion slot 1d can be held between the lower surface of the guide member 3 and the roller 4, and at this time, the large diameter portion of the roller 4 is opposed to both the escape portions 3d of the guide member 3. Thus, the central portion of the disk D can be reliably held between the guide member 3 and the roller 4.
[0020]
As shown in FIGS. 2 and 3, a pair of detection levers 6 are rotatably supported on the bottom surface of the chassis 1, and a circuit board 7 (see FIGS. 11 to 13) is fixed below these detection levers 6. Have been. Detecting pins 6a are provided upright at the end of each detecting lever 6, and the upper ends of the detecting pins 6a are inserted into arc-shaped guide holes 2a formed in the top chassis 2 (see FIG. 1). . Each detection lever 6 is urged by a spring (not shown) in a direction in which the two detection pins 6a approach each other, and a driving portion 6b is formed at the rear end of the detection lever 6 on the left side in the figure. A switch (not shown) is mounted on the circuit board 7. The outer peripheral edge of the disk D inserted from the insertion slot 1d abuts on at least one of the detection pins 6a, and the detection lever 6 is moved outward by a predetermined angle. When the detection lever 6 rotates, the switch operates in accordance with the rotation of the detection lever 6 to start the driving motor for the roller 4 described above.
[0021]
A drive unit 8 is provided inside the apparatus main body, and the drive unit 8 has a drive chassis 9 formed by bending a metal plate. The drive chassis 9 is elastically supported on the bottom surface of the chassis 1 by elastic members such as a plurality of dampers 10 (see FIGS. 6 and 7) and a coil spring (not shown), and lock pins 9a and 9b project from left and right sides thereof, respectively. A guide pin 9c protrudes from the right side surface, and a lock pin (not shown) protrudes from the lower surface. An optical pickup 11, a spindle motor 12, and the like are mounted on the drive chassis 9, and a turntable 13 is fixed to a rotating shaft of the spindle motor 12 (see FIG. 15). An arm clamp (clamper support member) 14 is provided on the drive chassis 9. The arm clamp 14 has guide grooves 14 a, 14 a formed on both left and right side surfaces thereof and guides the lock pin 9 a of the drive chassis 9 with the guide pin 14. It is engaged with the pin 9c and supported so as to be able to move in parallel in the vertical direction. A projection (not shown) is integrally formed on the left side of the arm clamp 14, and a pair of drive pins 14b is provided on the right side thereof. A clamper 15 is rotatably supported by the arm clamp 14, and drive pins 14b, 14b of the arm clamp 14 are engaged with cam holes 16b, 16b (see FIG. 16) of the drive arm 16. The drive arm 16 is supported by the right end of the drive chassis 9 so as to be slidable in the front-rear direction, and is elastically urged by a spring 17 in the direction of the insertion slot 1d. The engagement protrusion 16a provided on the drive arm 16 is detachably opposed to a protrusion of a right slide member described later.
[0022]
As shown in FIGS. 14 to 16, a pair of positioning members 18 and 19 are rotatably supported on the drive chassis 9, and these positioning members 18 and 19 are provided in the center holes of the disks SD or LDs having different diameters. Have the function of aligning them with the turntable 13, respectively. The left positioning member 18 includes an arm lever 18b made of a synthetic resin having a tooth portion 18a at a rear end thereof, and a regulating arm 18c formed of a leaf spring fixed to a tip of the arm lever 18b in a cantilever manner. The free end (tip) of the regulating arm 18 c is in elastic contact with the lower surface of the arm clamp 14. The positioning member 19 on the right side is composed of a metal plate arm lever 19b having a tooth portion 19a at the rear end, and a regulating arm 19c formed of a leaf spring fixed to the tip of the arm lever 19b in a cantilever manner. The free end (tip) of the regulating arm 19 c also elastically contacts the lower surface of the arm clamp 14. The positioning members 18 and 19 are configured to rotate synchronously with each other when the teeth 18a and 19a mesh with each other, and are urged by a spring (not shown) in a direction in which the distance between the distal ends of the positioning members 18 and 19 is reduced.
[0023]
A first end detection lever 36 is rotatably supported on the drive chassis 9, and a lock lever 20 is supported movably in the left-right direction. The first end detection lever 36 has a contact portion 36a that can contact the outer peripheral edge of the disk SD having a diameter of 8 cm, and the contact portion 36a is located at the center of both arm levers 18b and 19b. The arm lever 18b of the positioning member 18 and the first end detection lever 36 are connected to a pin (not shown) via a long hole, and when the left positioning member 18 rotates outward, the first end detection lever 36 Are rotated to the rear side of the drive chassis 9. Further, an unillustrated relay member is connected to an end of the first end detection lever 36 on the opposite side to the contact portion 36a, and rotation of the first end detection lever 36 is controlled by a second member to be described later via the relay member. It is selectively transmitted to the end detection lever. A lock portion 20a formed at the rear end of the lock lever 20 is detachable from the arm lever 18b of the left positioning member 18, and the lock lever 20 is moved to the left side of the drive chassis 9 by a spring (not shown). Being energized. At the front end side of the lock lever 20, a pressing portion 20b facing the driving portion 6b of the left detection lever 6 described above is provided. When the disk LD having a diameter of 12 cm is inserted, the driving portion 6b turns the pressing portion 20b. When pressed, the lock lever 20 is moved rightward to release the restriction of the positioning member 18 by the lock portion 20a.
[0024]
The above-mentioned two slide members are disposed inside the left and right side plates 1a of the chassis 1. Hereinafter, the left slide member will be referred to as a first slide member and denoted by reference numeral 21 as necessary, and the right slide member will be hereinafter referred to. Is referred to as a second slide member and may be denoted by reference numeral 22. Both of the slide members 21 and 22 are formed of synthetic resin, and are supported by the chassis 1 so as to be movable in the front-rear direction.
[0025]
As shown in FIGS. 6 and 7, a second end detection lever 37 is rotatably supported at the rear left portion of the bottom surface of the chassis 1, and a motor 23 which is a driving source of the first slide member 21 is installed. ing. The second end detection lever 37 has a contact portion 37a that can contact the outer peripheral edge of the disk LD having a diameter of 12 cm, and is urged clockwise by a spring (not shown). The power of the motor 23 is transmitted to the last gear 38 via a gear train, and the rack 24 facing the gear 38 is placed on the bottom plate of the first slide member 21 on the left side in the front-rear direction. To be movable by a predetermined distance. The rack 24 is urged rearward away from the gear 38 by a spring (not shown). However, the second end detection lever 37 rotates counterclockwise, and the second end detection lever 37 is opposite to the contact portion 37a. When pressed forward by the end of the gear 38, the gear 38 meshes with the gear 38. Thereafter, when the rack 24 moves forward by a predetermined distance by the power of the motor 23, the moving force of the rack 24 is transmitted to the first slide member 21, and the rack 21 h formed on the bottom plate of the first slide member 21 is driven by the gear 38. Mesh with. Thus, the power of the motor 23 is transmitted to the first slide member 21 on the left side via the gear 38, and the movement of the first slide member 21 is transmitted to the second slide member 22 on the right side via the link mechanism 25. It has become.
[0026]
As shown in FIG. 5, the link mechanism 25 includes a first link lever 26 and a second link lever 27, and the first and second link levers 26 and 27 are rotatable on the bottom surface of the chassis 1 respectively. It is supported by. The left end of the first link lever 26 is rotatably connected to the rear end of the first slide member 21, and the right end of the second link lever 27 is rotatably connected to the rear end of the second slide member 22. The pin 26a implanted at the right end of the first link lever 26 is inserted into a cam hole 27a formed at the left end of the second link lever 27. Therefore, when the first link lever 26 rotates with the forward and backward movement of the first slide member 21, the pin 26a moves in the cam hole 27a, so that the second link lever 27 rotates, and the second slide member 22 is moved. It can be moved back and forth in the same direction as the first slide member 21. That is, the first slide member 21 is a drive side operated by using the motor 23 as a drive source, and the second slide member 22 is a driven side operated in synchronization with the first slide member 21.
[0027]
A lock lever 28 is rotatably supported inside the left side plate 1 a of the chassis 1. The lock lever 28 is rotated by the forward and backward movement of the first slide member 21, and provided on the left side of the drive chassis 9 accordingly. The locked operation of the lock pin 9a is performed. On the other hand, a lock slide member 29 is supported inside the right side plate 1a of the chassis 1 so as to be movable in the front-rear direction, and a link arm 30 is rotatably supported. The link arm 30 is rotated by the forward and backward movement of the second slide member 22, and the lock slide member 29 moves in the opposite direction to the second slide member 22 accordingly. A lock hole 29a is formed in the lock slide member 29, and a lock pin 9b provided on the right side of the drive chassis 9 is engaged and disengaged by the lock hole 29a. Further, a center lock lever 31 having a lock arm 31a is rotatably supported on the bottom surface of the chassis 1. The center lock lever 31 rotates in conjunction with the first link lever 26, and accordingly, the drive chassis 9 Of the lock pin (not shown) provided at the center of the lower surface of the device.
[0028]
As shown in FIGS. 8 to 13, a plurality of cam grooves 21 a to 21 e are formed on the inner surface of the first slide member 21 on the left side, and a first driving unit 21 f and a second driving unit 21 g are formed on the inner bottom thereof. Are formed integrally. A cam-shaped pressing piece 21j is formed on the inner surface of the first slide member 21. The pressing piece 21j is located at a position where the pressing piece 21j can sink below the projecting piece formed on the arm clamp 14, thereby exerting a force to move the arm clamp 14 up and down. On the other hand, the first detection switch 32 and the second detection switch 33 are mounted on the circuit board 7 described above, and the actuator section 32a of the first detection switch 32 projects from the left side surface of the circuit board 7, and the second detection switch 33 Actuator section 33a protrudes above the circuit board 7. The first detection switch 32 is operated by the first drive unit 21f pressing the actuator unit 32a when the first slide member 21 advances, and the first drive unit 21f and the first detection switch 32 are moved to a half-lock position described later. It functions as a detectable position detecting means. The second detection switch 33 is operated by the second drive unit 21g pressing the actuator unit 32a when the first slide member 21 advances, and the second drive unit 21g and the second detection switch 33 function as load end detection means. I do. A plurality of cam grooves 22a to 22c are also formed on the second slide member 22 on the right side, and a protrusion 22d is formed on the upper surface thereof. 8 to 10 show a state where each slide member is viewed from the inside of the apparatus main body.
[0029]
With respect to the first and second slide members 21 and 22, both ends of the roller 4 are engaged with the cam grooves 21 a and 22 a of the slide members 21 and 22, and the guide member 3 is driven left and right by two. The pin 3c is engaged with the cam grooves 21b, 22b and 21c, 22c of the slide members 21, 22 respectively. The left lock pin 9a of the drive chassis 9 is engaged with the cam groove 21d of the first slide member 21, and the pin 28a implanted in the lock lever 28 is engaged with the cam groove 21e of the first slide member 21. ing. Further, the engagement protrusion 16a of the drive arm 16 is detachably opposed to the projection 22d of the second slide member 22, and the drive pins 14b, 14b of the arm clamp 14 are inserted into the cam holes 16b, 16b. A lock pin 9b on the right side of the drive chassis 9 is engaged with a lock hole 29a of a lock slide member 29 that moves in a direction opposite to the second slide member 22 via the link arm 30. Therefore, when the first and second slide members 21 and 22 move forward and backward in the same direction, the roller 4 and the guide member 3 are moved up and down accordingly, and the lock / unlock switching operation of the drive chassis 9 and the arm The raising / lowering operation of the clamp 14 is performed.
[0030]
As described above, in this embodiment, the arm clamp 14 is connected to the drive chassis 9 by the drive pins 14 b, 14 b and the projecting piece of the arm clamp 14, the pressing piece 21 j of the first slide member 21, and the drive arm 16. A clamp mechanism is configured to operate in the lifting direction to separate the disk D between the clamper 15 and the turntable 13 and to release the clamping. Further, the drive unit 8 is formed by the lock pins 9a and 9b of the drive chassis 9 and the lock pin on the lower surface, the cam groove 21d of the first slide member 21, the lock lever 28, the lock slide member 29, the link arm 30, and the center lock lever 31. A lock mechanism that locks / unlocks the lock mechanism 1 is configured. Further, the first and second slide members 21 and 22 and the link mechanism 25 constitute a switching mechanism for switching the clamp mechanism and the lock mechanism.
[0031]
As shown in FIG. 3, a positioning hole 34 is formed in the left side plate 1 a of the chassis 1. Although not shown, a similar positioning hole or positioning recess is formed in the first slide member 21. I have. Then, by inserting and locking the temporary fixing pins 35 into the positioning holes 34 or the positioning recesses from the outside of the left side plate 1a of the chassis 1, the first slide member 21 is moved relative to the chassis 1 at a half lock position described later. It does not move. The positioning recess of the first slide member 21 is formed as a screw hole, and the temporary fixing pin 35 is formed of a screw, so that the temporary fixing pin is screwed into the concave portion to securely fix the first slide member 21. good.
[0032]
Next, the operation of the in-vehicle disk player configured as described above will be described.
[0033]
When the disc D (SD, LD) is not inserted into the apparatus main body at the time of ejection (standby state), the first and second slide members 21 and 22 are at the rearmost positions on the innermost side of the chassis 1. As shown in FIG. 8, at the time of such an ejection, both ends of the roller 4 are located at upper positions on the front side of the cam grooves 21a and 22a, and the drive pins 3c of the guide member 3 are connected to the cam grooves 21b and 22b and the cam groove 21c. , 22c in the middle position. Therefore, the guide member 3 is held at the lowered position corresponding to the insertion slot 1d, and the roller 4 is held at the raised position pressed against the lower surface of the guide member 3. The lock pin 9a on the left side of the drive chassis 9 is restrained from the front-rear direction by the cam groove 21d of the first slide member 21 and the lock lever 28, and the lock pin 9b on the right side is the inner edge of the lock hole 29a of the lock slide member 29. The drive unit 8 is fixed to the chassis 1 in the front-rear, left-right and up-down directions by locking a lock pin (not shown) on the lower surface of the drive chassis 9 to the lock arm 31a of the center lock lever 31. It is in a locked state where it is supported. Further, the engagement protrusion 16a of the drive arm 16 is pressed by the projection 22d of the second slide member 22, and the drive arm 16 is also at the retracted position, so that the drive pins 14b, 14b of the arm clamp 14 as shown in FIG. Rises along the cam holes 16b, 16b of the drive arm 16, and the pressing piece 21j of the first slide member 21 goes under the protruding piece of the arm clamp 14 to lift this protruding piece upward. The arm clamp 14 is held at a raised position away from the drive chassis 9. Therefore, as shown in FIG. 15, the clamper 15 waits directly above the turntable 13 to secure a space for inserting the disk D. At this time, the regulating arms 18c and 19c of the positioning members 18 and 19 extend from the arm levers 18b and 19b in a direction approaching the clamper 15 to elastically contact the lower surface of the arm clamp 14, and the locking portion of the lock lever 20. Reference numeral 20a locks the arm lever 18b to restrict the rotation of the positioning member 18.
[0034]
In such a standby state, when the disk D (small-diameter disk SD or large-diameter disk LD) starts to be inserted into the apparatus main body from substantially the center of the insertion slot 1d, the outer peripheral edge on the distal end side in the insertion direction of the disk D is changed. The two detection levers 6 are brought into contact with the detection pins 6a of the detection levers 6 and rotated by the insertion force of the disc D so that the detection levers 6 expand outward. When a switch (not shown) detects that at least one of the detection levers 6 has rotated by a predetermined angle, a motor (not shown) is started to rotate the roller 4. When the disk D is further pushed in, the leading end of the disk D in the insertion direction is sandwiched between the lower surface of the guide member 3 and the roller 4, and the disk D is transported into the apparatus main body by the rotational force of the roller 4. During this time, the drive chassis 9 is maintained in the locked state, and the arm clamp 14 is held at the standby position above the drive chassis 9, so that the space between the drive chassis 9 and the arm clamp 14 (the turntable 13 and the clamper 15), a transport path for the disk D is secured. At the time when the insertion of the disk D is detected by the switch, the motor 23 installed in the inner left portion in the chassis 1 has also started to rotate.
[0035]
Here, when the inserted disk D is a small-diameter disk SD having a diameter of 8 cm, since the outward spread angle of both the detection levers 6 is small, the pressing portion 20b of the lock lever 20 moves during the conveyance of the disk SD. 6, the positioning members 18 and 19 are in a locked state in which the positioning members 18 and 19 are restricted to a predetermined opening angle. Alternatively, when the disk SD is inserted from the left side of the insertion slot 1d, the lock lever 20 slides rightward by the drive unit 6b of the detection lever 6 once, but the detection lever 6 is moved while the disk SD moves to the back. Are returned to the initial state, and when the disk SD is transported to a position where the center hole of the disk SD is directly above the turntable 13, the positioning members 18, 19 have returned to the locked state. Therefore, when the disk SD is transported to the back side through the space between the drive chassis 9 and the arm clamp 14, as shown in FIG. 17 and FIG. The center holes of the disc SD are correctly aligned with the turntable 13 by abutting the ends of the arm levers 18b and 19b. At this time, since the regulating arms 18c and 19c of the positioning members 18 and 19 extend from the distal ends of the arm levers 18b and 19b and are in elastic contact with the lower surface of the arm clamp 14, even if vibration or impact is applied from the outside, The disc SD being transported does not pass above the arm levers 18b, 19b, and the disc SD can be reliably positioned by the positioning members 18, 19 while being guided by the regulating arms 18c, 19c.
[0036]
When the disk SD is aligned with the turntable 13 in this manner, the leading end of the disk SD being transported contacts the contact portion 36a, and the first end detection lever 36 rotates counterclockwise. Therefore, the second end detection lever 37 also rotates counterclockwise via a relay member (not shown) to mesh the rack 24 with the gear 38. When the rack 24 moves on the bottom plate portion of the first slide member 21 to the movement limit position, the rack 24 and the first slide member 21 are substantially integrated, and the first slide member 21 starts to move forward. The rack portion 21h meshes with the gear 38. As a result, the rotational power of the motor 23 is transmitted to the left first slide member 21 via the gear 38 and the movement of the first slide member 21 is transmitted to the right second slide member 22 via the link mechanism 25. Then, the first and second slide members 21 and 22 start moving from the most retracted position of the chassis 1 to the advanced position. Further, when the disk SD is aligned with the turntable 13, the two detection levers 6 separate from the disk SD and return to the initial position. This is detected by the switch and the rotation of the roller 4 is stopped. . Alternatively, the rotation of the roller 4 may be stopped by detecting the rotation of the second end detection lever 37 with a switch (not shown).
[0037]
On the other hand, when the inserted disc D is a large-diameter disc LD having a diameter of 12 cm, the outward spread angle of the two detection levers 6 becomes larger than that of the disc SD, so that the lock lever 20 is transported during the conveyance of the disc LD. The pressing portion 20b is pressed by the driving portion 6b of the detection lever 6, and the lock lever 20 moves rightward, and the positioning members 18, 19 are released from the restraint by the lock portion 20a of the lock lever 20. Therefore, when the disc LD is conveyed to the far side through the space between the drive chassis 9 and the arm clamp 14, as shown in FIGS. After the two positions come into contact with the tips of both arm levers 18b and 19b, both positioning members 18 and 19 rotate in the direction in which the opening angle of each other increases due to the conveying force of the disc LD, and accordingly both regulating arms 18c and 19c. Slides on the lower surface of the arm clamp 14. When the positioning members 18 and 19 are stopped at a predetermined opening angle by a stopper (not shown), the center hole of the disc LD is correctly positioned with respect to the turntable 13 as shown in FIGS. Aligned. Also in this case, since the regulating arms 18c and 19c of the positioning members 18 and 19 extend from the distal ends of the arm levers 18b and 19b and are in elastic contact with the lower surface of the arm clamp 14, even if vibration or impact is applied from the outside, Since the leading end side of the disc LD in the conveying direction is guided by the regulating arms 18c, 19c, the disc LD being conveyed does not pass above the arm levers 18b, 19b. Can be reliably positioned.
[0038]
As described above, since the first end detection lever 36 and the arm lever 18b of the positioning member 18 are connected via a pin (not shown) and a long hole, the first end detection lever 36 is interlocked with the positioning member 18. The contact portion 36a is rotated so as to escape from the disk LD, but the rotational force of the first end detection lever 36 is interrupted by the relay member and is not transmitted to the second end detection lever 37. However, when the disk LD is aligned with the turntable 13, the outer edge of the disk LD being transported contacts the contact portion 37 a to rotate the second end detection lever 37. It is pressed by the two end detection lever 37 and meshes with the gear 38. Thereafter, similarly to the small-diameter disk SD described above, the rotational power of the motor 23 is transmitted to the first slide member 21 on the left side via the gear 38, and the first and second slide members 21 and 22 are moved to the innermost side of the chassis 1. Starts moving from the retracted position to the advanced position. The rotation of the roller 4 is stopped when the disk LD is aligned with the turntable 13.
[0039]
After the disk D (the disk SD or the disk LD) is aligned with the turntable 13 in this manner, when the rotational power of the motor 23 is transmitted to the first slide member 21 on the left side, as described above, Since the movement of the one slide member 21 is transmitted to the second slide member 22 via the link mechanism 25 (the first link lever 26 and the second link lever 27), the left and right slide members 21 and 22 move forward from the retracted position. It moves synchronously in the direction of arrow E in FIG. 6 with almost no phase shift to the position.
[0040]
While the first and second slide members 21 and 22 move from the retracted position in FIG. 8 to the position shown in FIG. 9, both ends of the roller 4 move from the upper position to the lower position in the cam grooves 21a and 22a, and are guided. Each drive pin 3c of the member 3 moves from the middle position of the cam grooves 21b and 22b and the cam grooves 21c and 22c to the middle position of the inclined portion through the lower position. As a result, the guide member 3 once lowers from the lowering position to the lowermost position and then returns to the lowering position, and the roller 4 moves to the lowering position and separates from the lower surface of the disk D. The lock pin 9a moves in the cam groove 21d, but the pin 28a of the lock lever 28 moves in a parallel portion of the cam groove 21e, so that the lock pin 9a is kept locked by the lock lever 28. Similarly, since the second slide member 22 moves within a range that does not change the attitude of the link arm 30, the lock slide member 29 remains stopped, and therefore, the lock pin 9b is also locked in the lock hole 29a of the lock slide member 29. And the lock pin (not shown) on the lower surface of the drive chassis 9 also remains locked by the lock arm 31a of the center lock lever 31, so that the drive unit 8 is fixedly supported by the chassis 1. Maintain state. On the other hand, when the protrusion 22d of the second slide member 22 advances, the drive arm 16 moves forward by a predetermined distance by the urging force of the spring 17 while the engagement protrusion 16a of the drive arm 16 is in contact with the protrusion 22d. For this reason, the drive pins 14b of the arm clamp 14 descend along the cam holes 16b of the drive arm 16. At the same time, as the first slide member 21 advances, the pressing piece 21j separates from the projecting piece of the arm clamp 14. Therefore, the arm clamp 14 descends in a direction approaching the drive chassis 9. As a result, the clamper 15 supported by the arm clamp 14 approaches the turntable 13 and the periphery of the center hole of the disk D is chucked between the turntable 13 and the clamper 15. Until the disk D is mounted on the turntable 13 from the transport height, the guide member 3 is also kept in contact with the upper surface of the disk D together with the clamper 15 by the cam shapes of the cam grooves 21b and 21c and the cam grooves 22b and 22c. Therefore, the disc D positioned by the positioning members 18 and 19 can be reliably chucked between the turntable 13 and the clamper 15. The regulating arms 18c, 19c of the positioning members 18, 19 are deformed by their own elasticity while being in elastic contact with the lower surface of the descending arm clamp 14.
[0041]
As is apparent from the above description, when the first and second slide members 21 and 22 move to the positions shown in FIG. 9, the drive unit while chucking (pinching) the disk D between the turntable 13 and the clamper 15. 8 is fixedly locked to the chassis 1, and this position is referred to as a half-lock position in the following description.
[0042]
While the first and second slide members 21 and 22 move from the half-lock position shown in FIG. 9 to the forward position of the chassis 1 as shown in FIG. 10, both ends of the roller 4 are cam grooves 21a and 21a. The drive pin 3c of the guide member 3 moves from the middle position to the upper position of the cam grooves 21b, 22b and the inclined portion of the cam grooves 21c, 22c. As a result, the guide member 3 moves from the lowered position to the raised position and further separates from the upper surface of the disk D, and the roller 4 is also held at the lower position separated from the lower surface of the disk D. And a large space that does not hinder the rotation of the disk D is secured. Further, since the lock pin 9a relatively moves to a position where the lock pin 9a is disengaged from the cam groove 21d, the pin 28a moves from the parallel portion to the inclined portion of the cam groove 21e, and the lock lever 28 rotates. Is released. Further, with the movement of the second slide member 22 from the position shown in FIG. 9 to the position shown in FIG. 10, the link arm 30 rotates and the lock slide member 29 moves to the rear side of the chassis 1, so that the lock slide member 29, the lock of the lock pin 9b is released, and at the same time, the center lock lever 31 largely rotates in conjunction with the first link lever 26 (see FIG. 7). The lock is also released. As a result, the drive chassis 9 is elastically supported on the chassis 1 by the damper 10 and the like, and the drive unit 8 switches from the locked state to the unlocked state.
[0043]
When the spindle motor 12 is driven to rotate in this play state, the turntable 13 and the disk D and the clamper 15 rotate integrally, and the optical pickup 11 records and / or records information on the disk D. Alternatively, a reproducing operation is performed. As shown in FIG. 11, when the two slide members 21 and 22 are ejected at the rearmost position on the innermost side of the chassis 1, the second drive unit 21 g of the first slide member 21 is actuated by the actuator of the second detection switch 33. Although it is separated from the portion 33a, when the two slide members 21 and 22 move to the forwardmost position on the front side of the chassis 1 to enter the play state, as shown in FIG. The second detection switch 33 is turned on upon contact. Therefore, if the rotation of the motor 23 is stopped by using the signal output from the second detection switch 33 as a load end signal, the two slide members 21 and 22 stop at the play position where the chassis 1 has moved to the forwardmost forward position. I do. Note that the rotation of the roller 4 may not be stopped when the loading operation of the disk D described above is completed, and the rotation of the roller 4 may be stopped with the ON operation of the second detection switch 33. When ejecting the disc D after completion of the playback or the like to the outside of the apparatus main body, when the eject button (not shown) is operated, the motor 23 starts to rotate in the reverse direction, and the reverse operation is performed. The second slide members 21 and 22 move rearward from the forward position and return to the retracted position shown in FIG.
[0044]
In addition, in the vehicle-mounted disk player according to the present embodiment, both the slide members 21 and 22 can be stopped at the half lock position during the assembly process or before the shipment after the final inspection. That is, when both slide members 21 and 22 move from the retracted position in FIG. 8 to the half lock position in FIG. 9, the first drive unit 21f of the first slide member 21 contacts the actuator unit 32a as shown in FIG. Therefore, if the motor 23 is stopped based on the operation signal of the first detection switch 32, the slide members 21 and 22 can be reliably stopped at the half-lock position. . Then, as shown in FIG. 3, the temporary fixing pin 35 is inserted into the positioning hole 34 from the outside of the chassis 1 at this half-lock position, and the tip end thereof is inserted into the positioning hole (not shown) formed in the first slide member 21. Alternatively, if locked in the positioning recess, the chassis 1 and the first slide member 21 can be connected so as not to move at the half lock position unless the temporary fixing pin 35 is pulled out.
[0045]
Therefore, when shipping / transporting from a factory in a state where a disk D such as a CD-ROM or a DVD for navigation is loaded into a vehicle-mounted disk player after completion of assembly, the drive unit is chucked at the half-lock position while chucking the disk D. If the locked state of the disk 8 is maintained, even if a strong vibration or impact is applied to the disk player from the outside during transportation, the loaded disk D collides with the chassis 1 or a member fixed to the chassis 1 or the like. It can be reliably prevented from being damaged. Also, when the inclination of the laser beam emitted from the optical pickup 11 is adjusted while rotating the disk D at the final stage of assembling the disk player, the locked state of the drive unit 8 while chucking the disk D at the half lock position. Is maintained, the disk D can be driven to rotate while the drive chassis 9 on which the optical pickup 11 is mounted is kept in a locked state, so that such adjustment work can be easily performed. If the temporary fixing pin 35 is pulled out at the delivery destination of the disc player, the connection state between the chassis 1 and the first slide member 21 is released. Therefore, when the disc player is installed at a predetermined location in the vehicle and used, both slides are required. The members 21 and 22 move forward and backward without stopping at the half lock position, and the switching operation of the clamp mechanism and the lock mechanism can be performed by these slide members 21 and 22. Note that, after delivery of the disc player, the CPU and the like may be programmed in advance so that the slide members 21 and 22 are moved from the half-lock position to the play position shown in FIG. The temporary fixing pins 35 function as connecting means for temporarily fixing the chassis 1 and the first slide member 21 (and the second slide member 22) at the half-lock position. A tape or a clip may be used, or these may be used in combination. In the half-lock position shown in FIG. 9, the rack portion 21h of the first slide member 21 is engaged with the gear 38, and is in a state of being connected to the motor 23. Therefore, it is not always necessary to use the temporary fixing pin 35. However, by providing such a temporary fixing means, the half-lock state can be reliably maintained even when a stronger impact is applied.
[0046]
FIG. 23 is a perspective view of a main part showing a modification of the position detecting means capable of detecting the half lock position. As shown in the figure, for example, a projection 39 is integrally formed as a first mark on the upper surface of the first slide member 21, and a groove 40 is formed as a second mark on the top chassis 2 fixed on the upper portion of the chassis 1. If the projection 39 and the groove 40 are formed so as to coincide with each other at the half-lock position, the half-lock position can be easily recognized visually without using the first detection switch 32, and the first slide member can be recognized at this position. 21 can be reliably stopped. In this case, the motor 23 may be energized to move the first slide member 21 to the half lock position, and then the energization of the motor 23 may be released. However, the first slide member 21 and the second slide member 22 may be manually half-engaged. It can also be moved to the locked position. Also, the mark as the position detecting means of the half-lock position is not limited to the protrusion 39 or the groove 40, but may be a marking or an engraving such as printing.
[0047]
In the above embodiment, the case where the disc transport mechanism according to the present invention is applied to an in-vehicle disc player which can use both large and small discs SD and LD has been described. It is needless to say that the present invention can be applied to an in-vehicle disc player capable of recording and / or reproducing only the data recorded in (1).
[0048]
【The invention's effect】
The present invention is implemented in the form described above, and has the following effects.
[0049]
The disc is nipped and transported by a guide member and rollers that can be raised and lowered with respect to the chassis, so the space inside the chassis can be effectively used to promote thinning, and the movable type Since the guide member is made of a composite material in which the surface of a metal plate is coated with a resin layer in advance by pressing, the rigidity required for the guide member is secured by the metal plate while the disk surface is scratched by the resin layer. The guide member can be manufactured only by pressing the composite material while having the function of preventing the occurrence of the problem, so that the manufacturing process of the guide member can be simplified and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a plan view of an on-vehicle disk player according to an embodiment.
FIG. 2 is a perspective view showing the disc player with a top chassis removed.
FIG. 3 is a perspective view showing the disc player with a top chassis and a guide member removed.
FIG. 4 is an exploded perspective view of a drive unit, a guide member, a slide member, and the like provided in the disc player.
FIG. 5 is a perspective view of a link mechanism provided in the disc player.
FIG. 6 is a plan view of the link mechanism at the time of ejection.
FIG. 7 is a plan view of the link mechanism during play.
FIG. 8 is an explanatory diagram of a slide member provided in the disc player at an eject position.
FIG. 9 is an explanatory view of the slide member at a half lock position.
FIG. 10 is an explanatory view at a play position of the slide member.
FIG. 11 is a perspective view of the slide member at the time of ejection.
FIG. 12 is a perspective view of the slide member in a half lock position.
FIG. 13 is a perspective view of the slide member during play.
FIG. 14 is a plan view of a disc positioning mechanism provided in the disc player.
FIG. 15 is a front view of the disk positioning mechanism.
FIG. 16 is a right side view of the disk positioning mechanism.
FIG. 17 is a plan view of the disk positioning mechanism showing a mounted state of a small-diameter disk.
FIG. 18 is a front view of the disk positioning mechanism showing a mounted state of a small-diameter disk.
FIG. 19 is a plan view of the disk positioning mechanism showing a mounted state of a large-diameter disk.
FIG. 20 is a front view of the disk positioning mechanism showing a mounted state of a large-diameter disk.
FIG. 21 is a plan view of the disk positioning mechanism showing a positioning operation of a large-diameter disk.
FIG. 22 is a sectional view of a guide member provided in the disc player.
FIG. 23 is a perspective view of a main part showing a modification of the position detecting means at the half lock position.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 chassis 1a side plate 1c front plate 1d insertion slot 2 top chassis 3 guide member 3A metal plate 3B resin layer 3a flat plate portion 3b side plate portion 3c drive pin 3d relief portion 3e bent portion 4 roller 5 roller bracket 6 detection lever 7 circuit board 8 Drive unit 9 Drive chassis 9a, 9b Lock pin 10 Damper 11 Optical pickup 12 Spindle motor 13 Turntable 14 Arm clamp 15 Clamper 18, 19 Positioning members 18a, 19a Teeth 18b, 19b Arm lever 18c, 19c Regulator arm 20 Lock lever 21 1 slide member 21a to 21e cam groove 21f first drive unit 21g second drive unit 22 second slide member 22a to 22c cam groove 22d protrusion 23 motor 25 link mechanism 28 lock lever 29 lock slide member 30 phosphorus Arm 31 Center lock lever 32 First detection switch 33 Second detection switch 34 Positioning hole 35 Temporary fixing pin 36 First end detection lever 37 Second end detection lever 39 Projection 40 40
D disk SD Small diameter disk LD Large diameter disk

Claims (3)

A guide member disposed so as to be able to move up and down with respect to the chassis, and a roller disposed so as to be able to approach and separate from the lower surface of the guide member; and In the disk transport mechanism of an in-vehicle disk player that holds the disk and raises the guide member and lowers the roller when playing the disk, thereby separating the guide member and the roller from the disk.
The guide member is formed by press working from a composite material in which a surface of a metal plate is coated with a resin layer in advance, and the resin layer is opposed to the roller. . 2. The disk transport mechanism according to claim 1, wherein said resin layer is made of a fluorine-based resin film, and said fluorine-based resin film is thermally welded to a surface of said metal plate. 3. The disk transport mechanism for a vehicle-mounted disk player according to claim 1, wherein a relief portion protruding from a lower surface to an upper surface is drawn in a portion of the guide member facing the roller.

Images