JP2011238314A - Disk player - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a "disk player" which easily enables cost reduction by reducing the number of components and assembly man-hours of a clamper retention mechanism.SOLUTION: The disk player comprises: a clamper 1 which cooperates with a turntable and chucks a disk; a clamper support 2 having an arm part to which an outer circumferential part of the clamper 1 can be mounted; and a holding bracket 3 assembled on the clamper support 2 to retain the clamper 1. The holding bracket 3 is composed of a metal thin plate rich in a spring property, and comprises: an attachment part 30 fitted to the clamper support 2; a support parts 31 which protrude from the attachment part 30 toward the arm part; and a leaf spring part 32. The support parts 31 are arranged at positions where the outer circumferential part of the clamper 1 can be mounted and different from the position of the arm part. A tip part of the leaf spring part 32 is located on a central protrusion to elastically energize the clamper 1 downwards constantly.

Description

  The present invention relates to a disc player that records and / or reproduces information on a disc such as a CD or a DVD, and more particularly to a clamper holding mechanism that chucks a disc in cooperation with a turntable.

  In general, a disc player has a turntable that is disposed inside a chassis and rotates with a spindle motor as a driving source, a rotatable clamper disposed above the turntable, and a clamper that supports the clamper. A clamper support that can move close to and away from the turntable is provided, and the turntable is rotated by the driving force of the spindle motor while the inner periphery of the disk near the center hole is chucked by the turntable and the clamper. It is designed to be driven. In such a disk player, conventionally, a clamper is rotatably attached to the tip end side of a sheet metal clamper support that is swingably supported by the chassis, and the clamper is turned by rotating the clamper support downward. It is widely known that the chucking operation can be performed close to the table, and the clamper is separated from the turntable to release the chucking state when the clamper support is rotated upward (for example, Patent Document 1).

  15 is a perspective view of a conventional clamper holding mechanism, FIG. 16 is an exploded perspective view thereof, and FIG. 17 is a top view thereof. As shown in these drawings, shaft holes 50a are provided on both the left and right sides of the rear end portion of the clamper support 50. By inserting projections of a chassis (not shown) into these shaft holes 50a, the clamper support 50 is supported. The body 50 is supported by the chassis so as to be able to swing, and can rotate in the vertical direction. A C-shaped arm portion 50b in a plan view is projected on the front end side of the clamper support 50, and a regulating tongue piece 50c extending toward the center portion of the clamper storage space surrounded by the arm portion 50b is projected. ing. The inner peripheral portion of the arm portion 50b is inserted into the small diameter portion of the clamper 53 to support the clamper 53, and the tip portion of the regulating tongue piece 50c is at the center of rotation of the clamper 53 via a leaf spring portion 52a described later. It faces a certain central protrusion 53a (see FIG. 16).

  In the clamper support 50, a support bracket 51 that supports the clamper 53 in cooperation with the arm portion 50b, and a pressing piece 52 that elastically biases the central projection 53a of the clamper 53 downward, are attached to an attachment screw 54. Is tightened together. The clamper support 50 and the support bracket 51 are both made of sheet metal. As shown in FIG. 16, the support bracket 51 is inserted with an arc-shaped piece 51 a inserted into the small diameter portion of the clamper 53 from the rear and a mounting screw 54. And a positioning hole 51c through which the positioning boss 50d of the clamper support 50 is inserted. The pressing piece 52 is made of a thin metal plate having a high spring property. The pressing piece 52 includes a plate spring portion 52a that elastically contacts the central protrusion 53a of the clamper 53, a screw hole 52b through which the mounting screw 54 is inserted, and a positioning boss. A positioning hole 52c through which 50d is inserted and a pair of elastic pieces 52d that elastically contact the upper surface of the clamper support 50 by a reaction force accompanying the bending of the leaf spring portion 52a are provided. The distal end portion of the leaf spring portion 52a is inserted into the gap between the central protrusion 53a and the restricting tongue piece 50c.

  The clamper 53 is a disk-shaped resin molded product, and the clamper 53 is rotatably supported on the front end side of the clamper support 50 by inserting the arm portion 50b and the arc-shaped piece 51a into the small diameter portion thereof from the front and rear. A leaf spring portion 52a is elastically contacted with the central protrusion 53a projecting to the upper surface side of the clamper 53, and the clamper 53 is always urged downward by the elastic force of the leaf spring portion 52a. Has been. Further, an annular pinching portion (not shown) is provided on the lower surface side of the clamper 53, and the pinching portion is placed on the turntable by being pressed against the upper surface of the inner peripheral portion of the disk. The chucked disc can be chucked. Even in a standby state where the disk is not chucked, the clamper 53 is pressed against the arm 50b and the arc-shaped piece 51a by the elastic force of the leaf spring 52a, so that the clamper 53 may vibrate and generate rattle noise. Absent. Further, during chucking, the clamper 53 slightly moves upward with respect to the arm portion 50b and the arc-shaped piece 51a, and the central projection 53a of the clamper 53 pushes up the leaf spring portion 52a accordingly, so that the elastic force of the leaf spring portion 52a is increased. The required clamping pressure can be generated between the clamper 53 and the turntable.

JP 2009-54199 A

  However, in the conventional disc player described above, the clamper 53 is supported using the support bracket 51 screwed to the clamper support 50 and the clamper 53 is elastically biased using the pressing piece 52 screwed to the clamper support 50. As a result, the number of parts and assembly man-hours of the clamper holding mechanism are increased, which makes it difficult to reduce costs. That is, in such a conventional disc player, in order to attach the clamper 53 to the clamper support 50, three independent parts such as the support bracket 51, the pressing piece 52, and the mounting screw 54 are prepared and a complicated screwing operation is performed. This has been a factor that increases the part cost and assembly cost.

  The present invention has been made in view of the actual situation of the prior art, and an object of the present invention is to provide a disc player that can easily reduce costs by reducing the number of parts and assembly man-hours of the clamper holding mechanism.

  In order to achieve the above object, the present invention provides a turntable that rotates using a motor as a drive source, a rotatable clamper that is disposed opposite to the turntable, and an arm portion that can mount the lower surface of the outer periphery of the clamper. And a clamper support that can be moved close to and away from the turntable, and the turntable is driven to rotate by the driving force of the motor while the disc is chucked by the turntable and the clamper. In the player, the holding bracket made of a metal plate is provided with an attachment portion fitted to the clamper support, and a support portion and a leaf spring portion protruding from the attachment portion toward the arm portion side, and the support portion is It is arranged at a position where the lower surface of the outer peripheral portion of the clamper can be mounted at a position different from the arm portion, and the tip portion of the leaf spring portion is Configured as elastic contact to the rotational center of the center of the upper surface of serial clamper.

  In a disc player having such a holding bracket, the clamper support body is supported in a balanced manner between the arm portion and the support portion by simply fitting the mounting portion of the holding bracket to the clamper support body, while maintaining a good balance between the arm portion and the support portion. The leaf spring portion can be elastically contacted with the center of rotation at the center of the upper surface. In other words, it is possible to attach the clamper to the clamper support in a desired state by using only one component called the holding bracket, and it is possible to omit complicated screwing work, greatly increasing the number of parts and assembly man-hours of the clamper holding mechanism. Can be reduced.

  In the above configuration, the plurality of claws are provided at the plurality of positions of the clamper support, and the plurality of claw pieces are provided at the mounting portion of the holding bracket, and the holding bracket is fitted to the clamper support. By sliding the holding bracket to the arm part side with the piece inserted into the corresponding notch part, each claw piece is locked to the peripheral part of the corresponding notch part, and the support part and the leaf spring part If the clamper is arranged at a position where the clamper can be clamped, the work of assembling the holding bracket to the clamper support and the work of holding the clamper by the holding bracket can be performed at the same time, so that the assembly workability is improved. In this case, if a positioning hole is provided in one of the clamper support and the mounting portion of the holding bracket, and a locking boss that is locked in the positioning hole is provided in either one of the clamper support and the clamper support, This is preferable because the positional accuracy of the holding bracket can be increased and play can be prevented.

  Further, in the above configuration, the ribs extending along the protruding direction of the leaf spring portion are provided in the vicinity of both side edges of the leaf spring portion, and grease is applied between the ribs. If it is elastically contacted with the rotation center, the grease application area is moved to a position where it is elastically contacted with the rotation center of the clamper while sliding the ribs of the leaf spring part against the clamper when the holding bracket is assembled. be able to. This makes it difficult for the grease applied to the leaf spring part to be scraped off by the clamper when the holding bracket is assembled. Therefore, a necessary amount of grease is interposed between the grease application area of the leaf spring part and the rotation center of the clamper. Thus, the wear of the clamper can be effectively suppressed over a long period of time.

  According to the disc player of the present invention, the lower surface of the outer periphery of the clamper can be supported in a balanced manner by the arm portion of the clamper support and the support portion of the holding bracket simply by fitting the mounting portion of the holding bracket to the clamper support. In addition, the leaf spring portion of the holding bracket can be brought into elastic contact with the center of rotation of the upper surface of the clamper. In other words, it is possible to attach the clamper to the clamper support in a desired state by using only one component called the holding bracket, and it is possible to omit complicated screwing work, greatly increasing the number of parts and assembly man-hours of the clamper holding mechanism. Can be reduced. As a result, the component cost and assembly cost of the clamper holding mechanism can be reduced, and the cost of the disc player can be easily reduced.

It is the perspective view which looked at the clamper holding mechanism of the disc player which concerns on the example of embodiment of this invention from diagonally upward. FIG. 2 is an exploded perspective view corresponding to FIG. 1. It is the perspective view which looked at this clamper holding mechanism from the slanting lower part. It is a top view of the clamper holding mechanism. It is a bottom view of the clamper holding mechanism. It is explanatory drawing which shows the state which is chucking the disk with this clamper holding mechanism. It is the perspective view which looked at the holding bracket used for this clamper holding mechanism from diagonally upward. It is the perspective view which looked at this holding bracket from the slanting lower part. It is a top view of this holding bracket. It is a side view of this holding bracket. It is explanatory drawing which shows the procedure in which this holding bracket is assembled | attached to a clamper support body. It is explanatory drawing which shows the effect | action of the protrusion of a leaf | plate spring part in the assembly | attachment operation | work of this holding bracket. It is the perspective view which looked at the comparative example of this holding bracket from diagonally downward. It is explanatory drawing which shows the malfunction which is anxious about this comparative example. It is a perspective view which shows the clamper holding mechanism which concerns on a prior art example. FIG. 16 is an exploded perspective view corresponding to FIG. 15. It is a top view of the conventional example.

  Embodiments of the present invention will be described below with reference to FIGS. As shown in FIG. 6, the disc player according to the present embodiment uses the turntable 4 and the rotatable clamper 1 disposed above the turntable 4 to catch a disc 5 such as a CD or a DVD. Can be king. The turntable 4 rotates using a spindle motor (not shown) disposed inside the chassis of the disc player as a drive source. The outer periphery of the clamper 1 includes an arm portion 20 of a clamper support 2 (see FIG. 1) disposed so as to be able to approach and move away from the turntable 4 and a holding bracket 3 fitted to the clamper support 2. It is supported by the support part 31 (refer FIG. 2). Further, the tip end portion of the leaf spring portion 32 of the holding bracket 3 is in elastic contact with the central protrusion portion 10 (see FIG. 6) which is the rotation center portion of the clamper 1. The inner periphery of the disk 5 near the center hole is chucked by the turntable 4 and the clamper 1, and when the spindle motor is rotationally driven in such a chucked state, the turntable 4, the disk 5 and the clamper 1 are Since the optical pickup rotates integrally, information can be recorded on and / or reproduced from the disk 5 by moving an optical pickup (not shown) in the radial direction of the disk 5.

  The clamper holding mechanism of the disc player according to the present embodiment will be described in detail. The shaft holes 21 are provided on the left and right sides of the rear end portion of the clamper support 2 made of a metal plate, and the chassis 21 is provided with the shaft holes 21. By inserting the protrusions, the clamper support 2 is swingably supported by the chassis and can be rotated in the vertical direction. An arm portion 20 having a C-shape in plan view projects from the distal end side of the clamper support 2, and a restricting tongue piece 22 extending toward the center of the substantially circular clamper storage space surrounded by the arm portion 20. Is protruding. As shown in FIG. 3, an arc-shaped piece 20 a protruding into the clamper storage space is formed at the front end portion of the arm portion 20, and the clamper 1 is placed on the arc-shaped piece 20 a and the support portion 31 of the holding bracket 3. The lower surface side of the outer peripheral portion can be mounted. Further, as shown in FIG. 1, restriction hooks 23 are formed at a plurality of positions on the upper surface side of the arm portion 20 so as to stand up in an L shape and protrude into the clamper storage space. By restricting excessive upward movement of the clamper 1 by the piece 22, the clamper 1 is prevented from being detached from the clamper support 2 even when an impact or the like is applied. The front end portion 22 a of the restriction tongue piece 22 is disposed at a predetermined height position above the clamper housing space, and the front end portion 22 a of the restriction tongue piece 22 and the clamper 1 are connected via the leaf spring portion 32 of the holding bracket 3. The central protrusion 10 is opposed. In a standby state in which the disk is not chucked, a required clearance is secured between the front end portion 22a of the restricting tongue piece 22 and the lower leaf spring portion 32. However, as shown in FIG. When the king is performed, the central projecting portion 10 moves upward, so that the leaf spring portion 32 is pushed up to a height position where the upward movement is restricted by the tip portion 22 a of the restricting tongue piece 22.

  Further, as shown in FIG. 2, in order to fit the mounting portion 30 of the holding bracket 3 to the clamper support 2, the clamper support 2 has notches 24 and 25, locking pieces 26 and 27, and engagement members. Stop bosses 28 and 29 are provided. The locking boss 28 and the locking boss 29 are provided on a straight line passing through the center of the clamper storage space, and the notch 24 is formed as an opening between the locking bosses 28 and 29. One notch portion 25 is formed on each of the left and right sides of the locking boss 29, and these notch portions 25 are formed as rectangular cut portions communicating with the clamper storage space. The locking pieces 26 are formed one by one on the left and right edges of the notch 24 on the arm 20 side, and the locking pieces 27 are formed on one side of each notch 25. As will be described later, when the holding bracket 3 is assembled to the clamper support 2, the claw pieces 30a and 30b of the holding bracket 3 are inserted into the notches 24 and 25, respectively, and then locked to the locking pieces 26 and 27. At the same time, the locking boss 28 and the locking boss 29 are inserted into the first positioning hole 30c and the second positioning hole 30d of the holding bracket 3, respectively.

  The holding bracket 3 is made of a thin metal plate having a high spring property, and is formed in a predetermined shape as shown in FIGS. The holding bracket 3 has a pair of pentagonal mounting portions 30 that are fitted to the clamper support 2 and a pair of folded pieces that hang down near the front end corner of the mounting portion 30. A supporting portion 31, a leaf spring portion 32 formed by folding a bent piece standing at the central portion of the front end of the attachment portion 30 and protruding in a band shape, and a pair of protrusions protruding laterally from the left and right side portions of the attachment portion 30 An elastic piece 33 is provided.

  The holding bracket 3 will be described in detail. The mounting portion 30 includes a pair of first claw pieces 30a formed by folding back a bent piece that hangs down near the center thereof in the left-right direction, and a bent piece that is hung down on both left and right edges near the front end. A pair of second claw pieces 30b formed by folding back the pieces in the left-right direction, a first positioning hole 30c in the shape of a round hole located in the central portion near the rear end, and a first in the shape of a long hole located in the central portion near the front end. 2 positioning holes 30d are formed. As will be described later, when the holding bracket 3 is assembled to the clamper support 2, the first claw pieces 30 a are inserted into the cutout portions 24, and the second claw pieces 30 b are inserted into the corresponding cutout portions 25. Thereafter, the holding bracket 3 is slid to the arm portion 20 side (the clamper 1 side), whereby each first claw piece 30a is locked to the corresponding locking piece 26, and each second claw piece 30b corresponds. The locking piece 27 is locked. Also, by sliding the holding bracket 3 toward the arm portion 20, the locking boss 28 is inserted into the first positioning hole 30c and the locking boss 29 is inserted into the second positioning hole 30d. ing.

  The pair of support portions 31 of the holding bracket 3 are arranged in line symmetry on the left and right sides of the base end portion of the leaf spring portion 32. The lower surface side of the outer peripheral portion of the clamper 1 can be mounted on these support portions 31, and as shown in FIG. 3, the outer periphery of the clamper 1 is located at a position where the pair of support portions 31 and the arc-shaped pieces 20a of the arm portion 20 are different from each other. The part can be supported.

  The leaf spring portion 32 of the holding bracket 3 is for always elastically biasing the clamper 1 downward. When the mounting portion 30 of the holding bracket 3 is fitted to the clamper support 2, the tip portion of the leaf spring portion 32 is provided. Elastically urges the clamper 1 downward by elastically contacting the central protrusion 10 so that the clamper 1 is pressed against the support 31 and the arcuate piece 20a. Further, since the pair of left and right elastic pieces 33 are elastically contacted with the upper surface of the clamper support 2 by the reaction force accompanying the bending of the leaf spring portion 32, it is considered that the holding bracket 3 does not play. A pair of ridges 32 a are formed on the lower surface (surface facing the clamper 1) of the distal end portion of the leaf spring portion 32, and these ridges 32 a are linearly formed along both side edges of the leaf spring portion 32. It extends. The leaf spring portion 32 is configured such that the region sandwiched between the pair of protrusions 32a is in elastic contact with the central protrusion 10 which is the rotation center portion of the clamper 1, and as shown in FIG. A region sandwiched between the regions is a grease application region 32b to which grease is applied. As described above, in a standby state where the disk is not chucked, a required clearance is ensured between the front end portion 22a of the restricting tongue piece 22 and the upper surface of the leaf spring portion 32.

  The clamper 1 is a disk-shaped resin molded product, and a central protrusion 10 serving as a rotation center portion is provided on the upper surface side of the clamper 1, and a central protrusion 40 (see FIG. 6) of the turntable 4 on the lower surface side. ) And an engaging projection 11 that can be engaged. Further, an annular pinching portion 12 is provided on the lower surface side of the clamper 1, and the pressing portion 12 is brought into pressure contact with the upper surface of the inner peripheral portion of the disk 5 placed on the turntable 4. Chucking is possible. The clamper 1 is rotatably attached to the front end side of the clamper support 2 using the holding bracket 3, and in the standby state where the disk is not chucked, the outer periphery of the clamper 1 is connected to the arc-shaped piece 20 a of the arm unit 20. It is mounted on the support portion 31 of the holding bracket 3. Further, as described above, since the tip end portion of the leaf spring portion 32 is in elastic contact with the central projecting portion 10 of the clamper 1, the clamper 1 is always elastically biased toward the lower side where the turntable 4 exists. That is, even in the standby state in which the disk is not chucked, the clamper 1 receives the elastic force of the leaf spring portion 32 and is pressed against the arcuate piece 20a of the arm portion 20 and the support portion 31 of the holding bracket 3. There is no possibility that the rattle will vibrate and generate rattle noise. Further, at the time of chucking, the clamper 1 moves slightly upward with respect to the arm portion 20 and the support portion 31 and the central protrusion 10 pushes up the leaf spring portion 32, so that the elastic force of the leaf spring portion 32 increases and the clamper 1 And a necessary clamping pressure can be generated between the turntable 4 and the turntable 4.

  Next, an assembly procedure of the clamper holding mechanism according to the present embodiment will be described. Before assembling the holding bracket 3, first, the clamper 1 is fitted into the clamper storage space surrounded by the arm portion 20 of the clamper support 2. At this time, if the clamper support 2 is turned upside down so that the lower surface of the clamper support 2 faces upward, the clamper 1 can be easily inserted onto the restricting tongue piece 22 and the restricting hook 23 so as to be inserted into the arcuate piece 20a of the arm portion 20. Can be installed.

  After that, as shown in FIG. 11, the claw pieces 30a and 30b of the holding bracket 3 are inserted into the corresponding cutout portions 24 and 25 from above the clamper support 2, and the second positioning hole 30d having a long hole shape is inserted. Is inserted into the locking boss 29. As a result, the holding bracket 3 is positioned in the left-right direction with respect to the clamper support 2, and the holding bracket 3 is slid and moved to the arm portion 20 side (clamper 1 side) as it is. Such sliding movement can be performed smoothly because the second positioning hole 30d functions as a guide groove for the locking boss 29. When the holding bracket 3 is slid by a predetermined amount, the locking boss 28 is snapped into the first positioning hole 30c. . As a result, the pair of first claw pieces 30a and the pair of second claw pieces 30b are respectively locked to the corresponding locking pieces 26 and 27, and the first positioning hole 30c is locked to the locking boss 28, And since the 2nd positioning hole 30d is latched by the latching boss | hub 29, the holding bracket 3 will be in the state fitted by the predetermined position of the clamper support body 2. FIG. Further, along with this sliding movement, the pair of support portions 31 move to a position where they overlap with the outer peripheral portion of the clamper 1, and the tip end portion of the leaf spring portion 32 moves to a position where it overlaps with the central protrusion 10 of the clamper 1. That is, the clamper holding work for holding the clamper 1 by the support part 31 and the leaf spring part 32 of the holding bracket 3 can be performed simultaneously with the assembling work for fitting the attachment part 30 of the holding bracket 3 to the clamper support 2. .

  When the holding bracket 3 is assembled to the clamper support 2, the tip portion of the leaf spring portion 32 must be moved onto the central protrusion 10 while sliding on the clamper 1. There is a possibility that the grease applied to the spring portion 32 may be scraped off at a place other than the central protrusion 10 of the clamper 1. However, in the present embodiment, a pair of protrusions 32a are formed on the lower surface of the tip portion of the leaf spring portion 32 with the grease application region 32b interposed therebetween, and these protrusions 32a extend along the protruding direction of the leaf spring portion 32. As shown in FIG. 12, when the holding bracket 3 is assembled, only the protrusion 32a of the leaf spring portion 32 slides on the clamper 1, and is sandwiched between both protrusions 32a. Care is taken so that the grease applied during this period is not scraped off.

  That is, as shown in FIG. 13, in the holding bracket 3 ′ of the comparative example in which the protrusion 32 a is not formed at the tip portion of the leaf spring portion 32, when assembling the holding bracket 3 ′ to the clamper support 2, As shown in FIG. 14, the grease application region 32 b of the leaf spring portion 32 slides while being in contact with the clamper 1, so that a large amount of grease may be scraped off by the clamper 1. In that case, since the grease between the central projection 10 which is the rotation center of the clamper 1 and the leaf spring portion 32 is insufficient, the clamper 1 is likely to wear and gradually the disk is driven to rotate normally. It becomes difficult. On the other hand, as shown in FIG. 8, the holding bracket 3 used in this embodiment is formed with a protrusion 32a extending at the tip portion of the leaf spring portion 32 so as to sandwich the grease application region 32b. Since these protrusions 32a can be slid on the clamper 1 when assembled to the support 2, the grease application region 32b can be moved to the central protrusion 10 with almost no sliding. Therefore, in the clamper holding mechanism according to the present embodiment, it is easy to interpose a necessary amount of grease between the grease application region 32b of the leaf spring portion 32 and the central protrusion 10 of the clamper 1, and the clamper 1 Wear can be effectively suppressed over a long period of time.

  As described above, in the clamper holding mechanism of the disc player according to this embodiment, the lower surface side of the outer peripheral portion of the clamper 1 is attached to the arm of the clamper support 2 only by fitting the mounting portion 30 of the holding bracket 3 to the clamper support 2. The plate spring portion of the holding bracket 3 can be supported in a well-balanced manner by the portion 20 (the arc-shaped piece 20a) and the support portion 31 of the holding bracket 3, and the rotation center portion (central protrusion portion 10) on the upper surface side of the clamper 1. 32 can be elastically contacted. In other words, the clamper 1 can be attached to the clamper support 2 in a desired state by using only one component called the holding bracket 3, and complicated screwing work can be omitted. Man-hours can be greatly reduced. As a result, the component cost and assembly cost of the clamper holding mechanism can be reduced, and the cost of the disc player can be easily reduced.

  Further, in this embodiment, when the holding bracket 3 is assembled to the clamper support 2, the claw pieces 30 a and 30 b attached to the mounting portion 30 are inserted into the corresponding notches 24 and 25 of the clamper support 2. In this state, the claw pieces 30a and 30b can be locked to the corresponding locking pieces 26 and 27 and the support portion 31 only by sliding the holding bracket 3 to the arm portion 20 side (clamper 1 side). The clamper 1 can be clamped by both 31 and 32 by moving the leaf spring portion 32 to a desired position. That is, since the work of assembling the holding bracket 3 to the clamper support 2 and the work of holding the clamper 1 by the holding bracket 3 can be performed simultaneously, the assembling workability is good. Moreover, since the second positioning hole 30d functions as a guide groove for the locking boss 29 when the holding bracket 3 is slid, the assembling work can be performed smoothly. Further, when the holding bracket 3 is slid by a predetermined amount, each claw piece 30a, 30b is not only locked to the corresponding locking piece 26, 27, but the first positioning hole 30c is locked to the locking boss 28. Since the second positioning hole 30d is locked to the locking boss 29, the holding bracket 3 can be assembled to the clamper support 2 with high positional accuracy, and play can be prevented. As described above, since the pair of left and right elastic pieces 33 elastically contact the upper surface of the clamper support 2 by the reaction force accompanying the bending of the leaf spring portion 32, these elastic pieces 33 also contribute to preventing the holding bracket 3 from rattling. .

1 Clamper 2 Clamper Support 3 Holding Bracket 4 Turntable 5 Disc 10 Center Protrusion (Rotation Center)
12 Clamping portion 20 Arm portion 20a Arc-shaped piece 22 Restricting tongue piece 24, 25 Notch portion 26, 27 Locking piece 28, 29 Locking boss 30 Mounting portion 30a First claw piece 30b Second claw piece 30c First positioning hole 30d 2nd positioning hole 31 Support part 32 Leaf spring part 32a Projection 32b Grease application area 33 Elastic piece

Claims (4)

A turntable that rotates using a motor as a drive source, a rotatable clamper disposed opposite to the turntable, and an arm portion on which the lower surface of the outer periphery of the clamper can be mounted can be moved close to and away from the turntable. In a disc player comprising a clamper support, wherein the turntable is rotationally driven by the driving force of the motor while the disc is chucked by the turntable and the clamper.
A holding bracket made of a metal plate is provided with an attachment portion fitted to the clamper support, and a support portion and a leaf spring portion protruding from the attachment portion toward the arm portion side, and the support portion is connected to the arm portion. The disc is arranged at a position where the lower surface of the outer peripheral portion of the clamper can be mounted at a different position, and the tip portion of the leaf spring portion is configured to elastically contact the center of rotation of the upper surface of the clamper. Player.   In Claim 1, While providing a notch part in several places of the said clamper support body, providing a some claw piece in the said attaching part of the said holding bracket, this fitting bracket is made to fit to the said clamper support body. When the plurality of claw pieces are inserted into the corresponding cutout portions, the holding bracket is slid toward the arm portion side so that each claw piece is engaged with the peripheral portion of the cutout portion. A disc player configured to be stopped and arranged so that the support portion and the leaf spring portion can sandwich the clamper.   3. The positioning device according to claim 2, wherein a positioning hole is provided in any one of the clamper support and the mounting portion, and a locking boss that is locked in the positioning hole is provided in either one. Disc player to play.   4. The protrusion according to claim 1, wherein a protrusion extending along a protruding direction of the leaf spring portion is provided in the vicinity of both side edges of the leaf spring portion, and grease is applied between the protrusions. The disc player is characterized in that the grease application area is elastically in contact with the center of rotation of the clamper.

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