JPS6243862A - Loading device for disc player - Google Patents

Abstract

PURPOSE:To depress stably a disc with a disc regulation member by pressing a restricting pin provided to an arm having the disc retaining member at the front end into contact with a projection of a disc tray so as to support the arm without a play. CONSTITUTION:The regulation pin 16 is provided to the side face of a rear prolonged part 17 of the arm 9, a rack 18 of the disc tray 4 is provided with a guide plate 21 having a regulation guide rib 22 engaged with the pin 16 and a projection 21a is provided to the side face of the guide plate 21. In driving a motor 3, the disc tray 4 connected to the rack 18 is slided backward in the arrow A, the pin 16 reaches a slope 22c of the guide rib 22, a slide projection 15 of the arm 9 descended into an escape part 4' on the disc tray 4, the arm 9 presses the disc retaining member 12 at the tip into contact with a disc loaded on a turntable 2 from a disc receiving part 6 already and depresses the member 12 by an elastic force of a spring 13. The pin 16 is pressed into contact onto the projection 21a at the tip and the arm 9 is held without a play.

Description

[Detailed description of the invention]

<Field of Industrial Application> The present invention relates to a disc player that reproduces information from a disc-shaped recording medium such as a compact disc.
The present invention relates to a loading device. Overview> The present invention has an arm having a disc pressing member that presses a disc placed on a turntable onto the turntable and rotates the turntable together with an arm that is pivotally supported on a main chassis, wherein the arm □ is the disc pressing member. This prevents the arm from wobbling by bringing a regulating pin provided on the arm side into contact with a convex portion provided on the main chassis side while pressing the disk. <Prior art> Recently, when a pull-out type disc tray is slid backward from the position where discs can be taken in and out, the turntable inside the disc tray enters and picks up the disc that was placed on the disc tray. A loading device is provided, in which the disk on the turntable is pressed and held by a disk holding member of an arm that pivots downward following the backward sliding of the disk tray, and rotates the disk together with the turntable. A disc player equipped with such a disc player is implemented as, for example, a compact disc (CD) player. <Problems to be Solved by the Invention> However, in the conventional disc player configured as described above, due to its structure, when the disc is pressed onto the turntable using the disc pressing member, the disc pressing member The arm supporting the disk was shaky, and the disk holding member could not be expected to press the disk stably. Means for Solving the Problems> The present invention was invented in view of the above-mentioned drawbacks of the conventional device, and includes an arm having a disk holding member at its front end that is pivotable on a main chassis equipped with a turntable. In this case, the disc tray is slid backward on the main chassis from a first position where a disc can be taken in and taken out, and the disc in the disc tray is placed on a turntable that enters into the disc tray from the bottom. In conjunction with this, the arm is pivoted downward from the raised position, and the disc holding member presses and holds the disc placed on the turntable. The above-mentioned turntable also rotates a disk (in this case, the arm is provided with a regulating pin, and the main chassis is provided with a convex portion that can come into contact with the regulating pin, and the above-mentioned main chassis is provided with a convex portion that can come into contact with the above-mentioned regulating pin, The lowering of the arm as it moves from

[Therefore, the present invention provides a loading device for a disc player, characterized in that the regulating pin is brought into contact with the convex portion at the timing 1 when the disc pressing member presses the disc on the turntable. . Therefore, in the present invention, when the disc pressing member is pressing the disc, the arm is supported without wobbling due to the contact between the regulating pin and the convex portion, and the pressing of the disc by the disc pressing member becomes more stable. to be carried out＼
Become. <Example> Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing a state in which a disc tray of a disc player equipped with an embodiment of the loading device according to the present invention is pulled out to a state where discs can be loaded and unloaded, and in the figure, 1 is approximately at the center of the plate surface. The main chassis has a turntable 2 disposed thereon, and a loading motor (DC motor) 3 in addition to a turntable motor (not shown) for driving the turntable 2 is provided on the back side. 4 is a disk tray that is slidably supported back and forth by a receiving member 1a on the main chassis 1 with sliding ribs 5 provided on both side edges. It has a disc receiving part 6 with an escape hole 7 extending in the sliding direction of the disc tray on the bottom surface, and arm guides 8L, 8 extending from the rear end to the middle of the front half on both side edges.
R is provided. These arm guides 8L, 8R have first guide surfaces 8L, 8R that are horizontal except for the front end. The front end thereof is a second guide surface 8L2.8R2 which is sloped and connected to the relief portion 4'. 9 is a pivot shaft 10 provided on both side edges of the rear end of the main chassis] A bearing member provided on the rear end of the main chassis is used as an arm that is pivoted and protrudes forward from the center of the front edge. A disc pressing member 12 is provided in the cut portion 9a. This disk holding member is well known and has a recessed portion (not shown) on its lower surface that rests on the conical centering means 2a provided at the center of the turntable 2. The placed disc (not shown) is pressed together with the turntable to release the turntable 20.
The disk is configured to rotate according to the rotation. Reference numeral 13 denotes an arm 1 which is compressed between a spring receiver 14 provided at the rear end of the arm 9 and the main chassis 1, and a direction in which the disk holding member 12 contacts the turntable 2 on the arm 9. The arm 9 is brought into contact with the arm guides 8L and 8R with the slide protrusion 15 provided on the lower surface thereof. Further, reference numeral 16 designates a regulating pin provided on the side surface of an extension portion 17 which is provided rearwardly protruding from the center of the rear end of the arm 9, and a regulating pin of a rank to be described later engages with the idle rib, so that the arm guide The pivot movement of the arm 9 is restricted separately from the slide protrusion 15. Reference numeral 18 denotes a rack disposed on the lower surface of the disk tray 4 via appropriate guide means (not shown) so as to be able to slide on the main chassis 1 in the same direction as the disk tray 4, the details of which are shown in FIG. As shown in FIG. 2, a pinion 25 driven by the motor 3 via pulleys 23 and
A stepped portion 20 is provided at approximately the center of the side edge opposite to the tooth portion 19 side that meshes with the pinion 25. Further, this rack 18 has a guide plate 2 having an idle rib 22 at its rear end, which engages with the regulating pin 16 of the arm 9 on the side edge side where the stepped portion 20 is located.
As shown in FIG. 6, the idle lib 22 consists of a horizontal portion 22b and sloped portions 22a and 22c at both ends thereof. As shown in FIG. 7, a convex portion 21a is provided on the side surface of the plate 21, which is connected to the side surface via a slope 21b. The rack 18 also has a long hole 18' along its sliding direction I.
A lock plate 26 is pivotally attached to the lock plate 26 by a stepped shaft (screw) 3 which is slidably inserted into the lock plate 2.
Reference numeral 6 designates a lock pin 2 whose tip is in sliding contact with the W plate 29 installed on the main chassis 1 so as to be parallel to the rack I8, and which is locked into a lock portion 30 at the rear end of the corresponding contact plate 29.
7, and has an abutment pin 28 on the midsection thereof that abuts against the side surface of the rack 18 having the stepped portion 20. Further, the rack 18 is connected to the disc tray 4 by the stepped shaft 31, so that the disc tray 4 slides as the rack 18 slides. The present invention is constructed in a diagonal manner, and next, one of its functions will be explained. FIG. 1 shows a state in which the disc tray 4 is placed in a position where a disc can be taken in and out of the disc receiving part 6. In this state, the arm 9 moves its slide protrusion 15 to the first guide of the arm guides 8L and 8R. Surfaces 8L, 8R,
The disk holding member 12 is placed at a raised position where the disc holding member 12 is spaced apart from the turntable 2 against the arm biasing spring 13. Also, at this time, the rack 18 meshes with the pinion 25 at the rear end, and accordingly, the lock plate 26 causes its abutment pin 28 to abut against the low point 20a1 of the stepped portion 20, and the lock pin 27 engages with the abutment plate. 29 is located horizontally at 29a. Further, the step shaft 3] is in contact with the rear end of the elongated hole 18'. In the state shown in FIG. 1, when a disk is placed on the disk receiving portion 6i and the motor 31 is energized by operating a start button (not shown) to drive the motor 3, the drive is performed by the pulleys 23, 24. According to the rotation of the pinion 25, the rack I8 pushes the lock plate 26 with the stepped part 20, and while the lock pin 27 of the lock plate is brought into contact with the surface 29al, it moves in the direction of arrow A in FIG. Therefore, the rack 1 is slid on the stepped shaft 31.
The disk tray 4 connected to the disk tray 8 is similarly slid backward in the direction of the arrow A while receiving the arm 9 on the first guide surfaces 8L and 8R of the guide rail, and loading begins. When the disk tray 4 has moved back a little, the regulating pin 16 of the arm 9 is moved to the inclined portion at the rear end of the regulating guide rib 22 of the rack 18, as shown at point 81 in FIG.
2a to the horizontal part 22 +) to engage with each other,
The above-mentioned raised position of the arm 9 is set to the above-mentioned first guide surface 8L,
, 8R, and the relationship between them and the slide protrusion 15 (see FIG. 2). Furthermore, the rack 18 and disk tray 4 continue to move backward,
At the timing when the regulating pin 1G reaches point 02 in Fig. 5, the lock pin 27 of the lock plate 26 moves to 2 as shown in Fig. 5.
9a and rotates around the step A/l axis 3I to lock the locking portion 311 of the abutment plate 29, and based on this, the abutment pin 28 moves from the low point 20a of the step portion 20 to the high point 20b. Since the rack I8 moves backward, the backward force of the rack I8 is applied to the lock plate 26.
(Also, at this time, the rear end of the disk tray 4 comes into contact with an abutment pin (not shown) provided at the rear end of the main chassis 1).
As the rack 18 continues to rotate, only the rack 18 is retracted within the elongated hole 18'. Then, as only the rack 18 moves backward, the regulation pin 16 reaches the slope part 22cl of the idle lib 22 from the point e2, and just at this time, the slide protrusion 15 of the arm 9 or the arm guides 8L, 8R Since the second guide surfaces 8L, 8R2 + Kosashi ＼ of ] 6 makes the inclined part 22c +f? With the cut rollers, the slide protrusion 15 is inserted into the relief portions 4', 4 on the disc tray 4, which are formed lower than the second guide surfaces 8L2 and 8R2.
/(At this point, the arm 9 is in the lowest position and holds the disk holding member 12 at the tip, already 1, 1
At the timing when the disc tray 4 contacts the above-mentioned contact pin, the disc receiver 6 is brought into contact with the disc placed on the turntable 2, and the disc is placed on the turntable 2. Press R with the force of spring 13. At this time, the regulating pin 16 abuts the tip of the convex portion 21ai at the point 03 where the inclined portion 22c is cut off, as shown most clearly in FIG. This further prevents the disk holding member 12 from shaking 11-. do. That is, the arm 9 is held at a predetermined operating position due to the contact of the regulating pin 6 with the convex portion 2'la and the urging force of the urging spring 13. When the disc holding member 12 presses the disc one place on the turntable 2, a detection means (not shown) works to supply power to the turntable motor, rotate the disc, and start the playback operation (see Fig. 3). , the disc is placed on the turntable 2, but this is a well-known technique; as the disc tray retreats from the position where the disc can be taken in and out, the turntable 2 itself gradually becomes more soiled and the disc tray 4 The turntable 2 comes out from the escape hole 7 onto the disc receiving part 6 to pick up and place the disc at the timing when it comes into contact with the hit pin and stops retreating, or the disc tray 4 comes into contact with the hit pin. After stopping the retreat, arm 9
As the arm 9 descends, the disc receiving part 6 is pressed against the arm 9.
There is a structure in which the disc receiving part 6 is lowered on the disc tray 4 based on this push and the disc is placed on the turntable 2. Next, in the above playback state, when a stop button (not shown) is operated, the disk motor stops, and at the same time, a current flows through the motor 3 in the opposite direction to that at the time of loading. 3 is reversed. As a result of this reversal of the motor 3, the rack I8 moves forward in the opposite direction of arrow A, and the regulating pin 16, which had been in contact with the convex portion 21a, is released from the convex portion and touches the inclined portion 22c of the regulating guide rib 22. This lowering of the regulating pin 16 causes the arm 9 to gradually rise against the +1 force spring 13, causing the disc holding member 12 to separate from the disc.Then, the rack 18 moves forward. Proceed and control pin 16 is 02
When this point is reached, the stepped shaft 31 hits the rear end of the elongated hole 18', and the forward motion of the rack 18 is transmitted to the lock plate 261, moving the abutment pin 28 from the high point 20b of the stepped portion 20 to the low point 20a.
At the same time, the lock pin 27 is moved from the lock part 30 to the surface 29a, and the disk array 4 is also moved forward in the opposite direction of arrow A while supporting the arm 9 with the arm guides 8L and 8R. . Then, when the regulating pin 16 comes off the regulating guide rib 22 and the disk array 4 is in a position where the disk can be taken out from the disk receiving part 6, the power supply to the motor 3 is stopped by the appropriate operation of the detection means. The disk array 4 then remains at that position. Effects> Since the present invention is constructed in an upwardly slanted manner, when the disc pressing member presses the disc, the arm becomes unstable (because it is supported, the pressing of the disc due to the disc pressing member 1) can be stabilized.

[Brief explanation of drawings]

FIGS. 1 to 3 show a state in which a disc tray is in a position where a disc can be taken in and out in a disc player equipped with an embodiment of the rope ink device according to the present invention, and a playback state after loading from such a state. FIGS. 4 and 5 are perspective views showing the different operating states of the ranks provided in the same disk player (7 views, and FIG. 6 shows the ranks in FIG. 5 as indicated by arrows 1-1. Fig. 7 is a top sectional view of the main parts as seen from the I+'-■ line in Fig. 6. 1: Main chassis, 2: Turntable, 3: Motor, 4: Disc tray, 9: Arm, I2: Disc holding member, 16: Regulation pin, 21a: Projection.

Claims (1)

[Claims] 1. An arm having a disc holding member at its front end is pivotably provided on a main chassis equipped with a turntable, and a disc tray is moved onto the main chassis from a first position where a disc can be taken in and taken out. By sliding backward and moving the disc on the disc tray to a second position where it is placed on a turntable that enters the disc tray from the bottom, the arm is moved down from the raised position in conjunction with this. The arm is provided with a regulating pin, and the arm is provided with a regulating pin, and the arm is provided with a regulating pin, and the disk holding member presses and holds the disk placed on the turntable. is provided with a convex portion that can come into contact with the regulating pin, and the disc pressing member presses the disc on the turntable as the arm descends as the disc tray moves from the first position to the second position. A loading device for a disc player, characterized in that the regulating pin is brought into contact with a convex portion at a timing when the regulating pin is brought into contact with a convex portion.