JPH0418107Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The invention has a disk transport tray that moves horizontally between a disk mounting position pulled out outside the player and a disk playback position pushed inside the player. Regarding disk players.

(B) Prior Art Conventionally, as a disc player having a tray for transporting discs, for example, an apparatus disclosed in Japanese Patent Application Laid-Open No. 61-210557 (G11B 17/04) is known. In such a disk player, the tray is provided with a recess for storing the disk, and the clamp lever is pivoted at the back in the carrying direction so that its rotation axis is perpendicular to the carrying direction of the tray, and when the tray is moved. In this case, the clamp lever is rotated enough to separate the clamp member at the rotating end of the clamp lever from the upper surface of the tray so as not to impede movement of the tray (non-clamp position).

By the way, the clamp member that presses the disc against the turntable during playback is normally constructed to have a diameter that is approximately the same as that of the turntable. The larger the diameter of the clamp member, the better the vibration of the disk caused by the disturbance can be prevented (see Japanese Patent Laid-Open No. 160059/1983 (G11B 17/028)). Such a clamping member (hereinafter referred to as a stabilizer) cannot be used on a disc that has information signals on both sides, such as a video disc, because the stabilizer covers the information signal area when clamped, so there is a risk of damaging this area, but it cannot be used on only one side. Discs that only have information signals, such as compact discs (hereinafter referred to as CDs)
has been frequently used in recent years.

When such a stabilizer is used as a clamp member in the technique disclosed in JP-A-61-210557, because the diameter of the stabilizer is large, even when the clamp lever is rotated to the normal non-clamping position, the lower end of the stabilizer is It was lower than the height of the top surface of the tray, so there was a risk that it would get caught in the recess of the tray and hinder movement of the tray. Therefore, the clamp lever must be rotated further so as not to interfere with the movement of the tray, and the amount of rotation of the clamp lever becomes large, resulting in an increase in the size of the player body.

Furthermore, Japanese Patent Application Laid-open No. 1983-44250 (G11B 17/04)
In this device, the clamp lever is moved up and down instead of rotating, and when the stabilizer is applied to such a device, the stabilizer is moved up and down parallel to the top surface of the tray by the up and down movement of the clamp lever. Although the amount of movement of the clamp lever may be small, the control mechanism for controlling the vertical movement of the clamp lever is extremely complicated, and there are still problems in terms of the number of parts and workability.

(c) Problems to be solved by the invention The invention aims to provide a disk player in which the amount of displacement of the clamp lever can be reduced and the configuration of the control mechanism for controlling the displacement of the clamp lever can be simplified. It is something.

(d) Means for Solving the Problems The present invention provides a disc player having a tray for transporting discs that moves horizontally between a disc mounting position pulled out outside the player and a disc playback position pushed inside the player. , a recess for storing a disc disposed on the upper surface of the tray, a clamp lever rotatably disposed at the disc playback position, and an outer periphery loosely fitted to the rotary end of the clamp lever. a circular clamp member for a disk clamp, and when the clamp lever is rotated upward to a non-clamping position, the peripheral end of the clamp member that hangs down due to the rotation of the clamp lever is provided. When the tray is inserted into the recess of the tray, and then the tray is moved from the reproducing position to the mounting position, the peripheral end of the clamp member abuts the inner wall of the recess, and the peripheral end and the The pivot axis of the clamp lever is set such that the clamp member is pivoted in a direction parallel to the top surface of the tray by cam action with the inner wall of the recess, thereby enabling subsequent movement of the tray. The clamp lever is arranged parallel to the direction of movement of the tray.

(e) Operation When the tray is pulled out from the disc playback position to the disc mounting position, first the clamp lever is rotated upward, and then the tray is pulled out in the direction of the disc mounting position. At this time, the peripheral end of the clamp member that has been suspended by the rotation of the clamp lever is inserted into the recess of the tray. Therefore, when the tray is pulled out in the direction of the disk mounting position, the peripheral end of the clamp member comes into contact with the inner wall of the tray recess and is pressed in the pulled-out direction.
However, since the outer circumference of the clamp member is circular,
A cam action acts between the peripheral end of the hanging clamp member and the inner wall of the tray recess, and the peripheral end of the clamp member is biased upward by the pressure in the pull-out direction. Since the clamp member is loosely fitted to the clamp lever, the hanging peripheral end rotates upward due to the upward bias. Therefore, the clamp member is moved parallel to the upper surface of the tray, and is retracted so as not to impede subsequent movement of the tray in the pull-out direction.

(f) Examples An embodiment of the present invention will be described below.

Figure 1 shows the external appearance of the main device. 1 is a CD
A player section, 2 is a tape player section, 3 is an operation section, and 4 is a radio tuning knob. As shown in the figure, the CD player section 1 is located at the bottom of the main device, that is, the CD player section 1 is attached to the bottom lid 5 of the main device.

The CD player section 1 is shown in FIG. 2, and its configuration will be explained in detail below.

Reference numeral 6 denotes a support chassis on which a pick-up 7 is slidably supported via shafts 8, 8, and a turntable 9 and a spindle motor (not shown) for driving this turntable 9 are mounted. A cover 10 covers the upper surface of the support chassis 6, and has a long hole 11 and an opening 12 through which the pickup 7 and turntable 9 face the outside. This cover 10 has screws 13, 13, 1
3 and 13 to the upper surface of the support chassis 6. The support chassis 6 on which the pickup 7, turntable 9, etc. are mounted in this manner is screwed to the bosses 15, 15, 15, 15 of the bottom lid 5 via rubber dampers 14, 14, 14, 14. The rubber damper 14, 14, 14, 14
acts to elastically lift the support chassis 6 relative to the bottom lid 5, and absorbs external vibrations before they are transmitted to the support chassis 6.

Reference numeral 16 denotes a tray for transporting disks, which has an opening 17 and supports the lifter 20 through guide holes 19, 19, 19, 19 formed in side walls 18, 18. That is, the lifter 20 is provided with pins 21, 21, 21, 21 on both sides thereof, and these pins 21, 21, 21, 21 are inserted into the guide holes 19,
By fitting into the trays 19, 19, 19, the lifter 20 is supported so as to be slidable diagonally relative to the tray 16. The lifter 20 is biased in the direction of arrow A by a spring being stretched between it and the tray 16.
0 is positioned diagonally above the tray 16. The lifter 20 is also provided with a storage section 20a for storing and placing a disk, an opening 20b formed in the storage section 20a, and positioning pins 20c, 20c implanted near the storage section 20a. Two bearings are arranged on the bottom of the tray 16, and the shaft 2 is mounted on these bearings.
After inserting 1, 21, this shaft 21, 21
is attached to the support frames 22, 22, and further this support frame 2
2, 22 into the screw holes 23, 23 of the bottom lid 5,
By screwing on 23, 24, 24, 24,
The tray 16 is positioned at B- with respect to the bottom lid 5.
It is supported slidably in the B′ direction.

Reference numeral 25 denotes an L-shaped clamp lever, and a rotating shaft 26 is disposed at the bent portion of the clamp lever.
28 and further prevent the rotation shaft 26 from coming off with the screws 29, 29.
It is rotatably supported by 7 and 27. A stabilizer 30 is rotatably supported at the pivot end of the clamp lever 25, and a protrusion 31 is provided near the pivot shaft 26.

Reference numeral 32 denotes a regulating member for regulating the lifter 20, which is screwed onto a boss 33 of the bottom lid 5.

The state in which each of the mechanical parts configured as described above is attached to the bottom lid will be explained with reference to FIG. 3.

As mentioned above, the support chassis 6 is elastically supported by the bottom lid 5. Such support chassis 6
The shafts 21, 21 are arranged in parallel with each other in between,
The tray 16 is slidably supported by the shafts 21, 21. FIG. 3 shows the disk mounted state with the tray 16 pulled out. When the tray 16 is carried in, the tray 16 and the lifter 20 pass through the upper part of the support chassis 6. The clamp lever 25 is arranged on the side of the tray 16 so that its rotation axis 26 is parallel to the shaft 21, and the stabilizer 30 at the rotation end faces the turntable 9. In addition, in such a state where the disk is attached, the clamp lever 25 is attached to the protrusion 3.
Since the stabilizer 1 contacts the side wall 18 of the tray 16 and its rotation is restricted, the stabilizer 30 is separated from the turntable 9 (unclamped state).
At this time, the lifter 20 is positioned diagonally above the tray 16 by the spring as described above.

From this state, when the disc is stored in the storage part 20a of the lifter 20 and the tray 16 is pushed in, the tray 16 is placed between the turntable 9 and the stabilizer 30.
is moved between. At this time, lifter 2
Two positioning pins 20 planted on the top surface of 0
By passing the stabilizer 30 between the positioning pins 20c and 20c, the edge of the stabilizer 30 comes into contact with one of the positioning pins 20c and 20c, and the positional deviation of the stabilizer 30 with respect to the clamp lever 25 is corrected. And more tray 1
6 is pushed in and the center hole of the disk is positioned directly above the turntable 9, the edge of the lifter 20 comes into contact with the regulating member 32 and its movement is regulated. At the same timing, the protrusion 31 of the clamp lever 25 reaches the cam portion 18a of the side wall 18 of the tray 16. Then, when the tray 16 is further pushed in, the lifter 20 moves to the regulating member 32.
Movement control and guide holes 19,1 of tray 16
9, 19, 19, it is shifted directly below,
A disc is placed on the turntable 9. Furthermore, at this time, the protrusion 31 of the clamp lever 25 passes over the cam portion 18a, so that the clamp lever 25 is rotated toward the turntable, and the stabilizer 30 comes into contact with the upper surface of the disk placed on the turntable. A magnet is attached to the stabilizer 30, and the turntable 9 is made of a magnetic material, so the magnetic force acting between the stabilizer 30 and the turntable 9 causes the disc to be clamped between them. be done. The disk is mounted in the manner described above, and the disk becomes playable.

By the way, in the bottom lid 5, a printed circuit board 34 having a CD circuit section for controlling the above-mentioned mechanism section is attached to the side of the above-mentioned mechanism section by screws 35, 35, 3.
5, 35. 36 is like this
Power line for supplying power to the CD circuit section,
Reference numerals 37 and 38 are signal transmission lines connected to the pickup 7 of the mechanical section, a spindle motor (not shown), switches of various parts, etc., for transmitting control signals and the like. Furthermore, signals are sent and received through the terminal 39 with functional units other than the CD player unit.

Next, the disk unloading operation will be explained below. When a disk unloading command is applied from the disk reproducing state shown in FIG. 4, the lock by the locking means (not shown) is released and the tray 16 is pulled out. At this time, the drive current applied to the spindle motor 40 is cut off, but the disk D continues to rotate due to inertial movement. When the tray 16 is pulled out by such an operation, only the lifter 20 is raised by the initial slight tray pull-out operation, contrary to the above-described pushing operation of the tray 16. As the lifter 20 rises, the disk D is lifted up by the lifter 20 and separated from the turntable 9. At this time, the outer circumferential portion of the disk D is supported by a support portion 41 provided along the outer circumferential portion of the storage portion 20a of the lifter 20 (see FIG. 7). Furthermore, in the stabilizer 30, the protrusion 31 of the clamp lever 25 does not reach the cam portion 18a on the side wall of the tray.
Although the cam portion 18a does not rotate upward, the rise of the lifter 20 causes the disk D to move upward.
(See Fig. 5). That is, at this time, since the disk is held between the support part 41 of the storage part 20a and the stabilizer 30, the rotation of the disk D, which was rotating due to inertia, is reliably and quickly stopped by this operation. Ru.
At this time, since the disk D is supported by the outer periphery of the support portion 41, there is no risk of damaging the information recording area. When the tray 16 is further pulled out, the protrusion 31 of the clamp lever 25 reaches the cam portion 18a of the tray 16, so the clamp lever 25 is rotated upward and the stabilizer 30 is positioned at the non-clamping position (Fig. 6). reference).
After that, when the tray 16 is pulled out, the lifter 20 moves together with it, but at this time, as shown in FIG.
Since the end edge is inserted into the storage section 20a of the lifter 20, the P end edge is inserted into the storage section 20a of the lifter 20.
The P edge contacts the inner wall of the tray, and the P edge is pressed in the direction in which the tray is pulled out (from the back to the front of the page). However, since the outer periphery of the stabilizer 30 has a circular shape, a cam action acts between the P edge and the peripheral wall of the storage portion 20a. Therefore, the P edge is urged upward by the pressure from the storage portion 20a. Therefore, the stabilizer 30 is
In response to the withdrawal of the lifter 6, the lifter 20 rotates around the central axis L, rotates in the direction of the arrow C using the point O as a fulcrum, and rides on the upper surface of the lifter 20. In this manner, the stabilizer 30 is retracted so as not to impede the movement of the tray 16, and the tray 16 is then further pulled out to reach the disk loading/unloading position.

(g) Effects of the invention The present invention provides a disc player having a tray for transporting a disc that moves horizontally between a disc mounting position pulled out outside the player and a disc playback position pushed inside the player. a recess for storing a disc disposed in the disc, a clamp lever rotatably disposed at the disc playback position, and a clamp member for a disc clamp loosely fitted to the rotary end of the clamp lever. further, when the clamp lever is rotated upward to a non-clamping position and the tray is moved from the playback position to the mounting position, the clamp hangs down due to the rotation of the clamp lever. The clamp is arranged such that the circumferential edge of the member abuts and presses against the recess of the tray, and the clamp member pivots in a direction parallel to the top surface of the tray to enable subsequent movement of the tray. Since the clamp lever is arranged so that the pivot axis of the lever is parallel to the direction of movement of the tray, the amount of rotational displacement of the clamp lever can be made smaller than the amount of conventional rotational displacement, and the player body can be made smaller. can be achieved. Moreover, the same mechanism as the conventional one can be used as the control mechanism for controlling the clamp lever, and the structure does not need to be complicated.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, and Fig. 1 is an external perspective view, Fig. 2 is an exploded perspective view of the main part, Fig. 3 is a perspective view of the main part, Fig. 4, Fig. 5, and FIG. 6 is a sectional view taken along the line D-D' in FIG. 3 to show the operation, and FIG. 7 is a view showing the state of the disk supported by the lifter. 16...tray, 20...lifter, 20a...
...Storage part (recess), 25...Clamp lever, 3
0... Stabilizer (clamp member).

Claims (1)

[Claims for Utility Model Registration] In a disc player having a tray for transporting a disc that moves horizontally between a disc device position pulled out outside the player and a disc playback position pushed inside the player, a recess for storing a disc, a clamp lever rotatably disposed at the disc playback position, and a disc clamp having a circular outer periphery loosely fitted to the rotating end of the clamp lever. further, when the clamp lever is rotated upward to a non-clamping position, the peripheral end of the clamp member that hangs down due to the rotation of the clamp lever is inserted into the recess of the tray. When the tray is moved from the reproducing position to the mounting position, the peripheral end of the clamp member contacts the inner wall of the recess, and the cam between the peripheral end and the inner wall of the recess The pivot axis of the clamp lever is arranged relative to the direction of movement of the tray so that the clamp member is rotated in a direction parallel to the upper surface of the tray, thereby enabling further movement of the tray. A disc player characterized in that the clamp lever is arranged in parallel with each other.