JPH0527849U - Player for compact disk - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the structure by locking and unlocking the disk stopper at two restricting positions by reciprocating sliding of one locking member. [Structure] A disk stopper 30 provided so as to be movable between two restricting positions, and this disk stopper 3
The lock member 50 is slidable between a lock position where 0 can be locked at each of two restriction positions and a lock release position where the lock position is released, and the elastic member always receives elastic force in the direction toward the lock position. When the compact disc is loaded or unloaded, the detection member 60 is operated so as to slide the lock member 50 once toward the unlocked position by receiving the interference action of the outer periphery of the compact disc.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a compact disc player of a type that can handle both a normal compact disc (12 cm diameter disc) and a single compact disc (8 cm diameter disc).

[0002]

[Prior Art]

 Generally, in a player that directly loads and unloads a compact disc (hereinafter abbreviated as “CD”) itself, the loaded CD is received by a disc stopper, so that the CD is positioned at the play position. To be done. Therefore, in order to support two types of CDs having different diameters, it is necessary to change the position of the disk stopper according to the type.

An example of this type of player is the technique disclosed in Japanese Utility Model Laid-Open No. 23851/1993. In this publication, when loading a large-diameter CD, the outer peripheral portion of the CD interferes with a pair of left and right lock arms, and both lock arms are pivoted to unlocked positions. As a result, the disk stopper, which was locked at the position for receiving the small diameter CD, is released, and it moves together with the large diameter CD to the position for receiving this CD.

[0004]

[Problems to be solved by the device]

 In the technique of the above publication, as described above, the pair of lock arms are rotated to lock and unlock the disc stopper. However, the rotating member such as the rock arm is generally made of metal in order to guarantee the assembling strength. In addition, since a pair of lock arms are required, the structure becomes complicated, resulting in an increase in product cost.

A technical problem of the present invention is to realize locking and releasing of a disk stopper by reciprocating sliding of one locking member.

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the compact disc player of the present invention is configured as follows. That is, a disc stopper that can receive the compact disc at the time of loading and is movable between two restricting positions for positioning the small-diameter compact disc and the large-diameter compact disc in their respective play positions, and this disc stopper. The stopper is slidable between the lock position where it can be locked at each of the two restriction positions and the lock release position where it is released, and the lock member that always receives the elastic force in the direction toward the lock position and the large diameter The compact disc is provided with a detection member that is actuated so as to slide the lock member once toward the unlocked position by receiving an interference effect of the outer periphery of the disc during loading or unloading.

[0007]

[Action]

 In this configuration, it is assumed that the disc stopper is locked at a regulation position for receiving a CD having a small diameter at its play position. Then, when loading of a large-diameter CD is started, the lock member slides once to the unlocked position by the operation of the detection member that receives the interference of the CD, and then returns to the locked position again. Therefore, the lock of the disc stopper is released, the disc stopper moves together with the large-diameter CD, and the disc stopper is locked again by the lock member at the regulation position for receiving the CD at the play position.

As described above, the locking and unlocking of the lock member at the two restricting positions is realized by the reciprocating slide of one lock member, so that the structure of this type of player is simplified. Further, since this lock member may be assembled so as to be reciprocally slidable, it does not require much strength by itself and can be molded, for example, from a synthetic resin material.

[0009]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing a floating portion of a compact disc player at the time of loading a single CD (8 cm diameter disc), and FIG. 2 is a sectional view of FIG.

In these drawings, a traverse plate 10 is supported by a chassis (not shown) in a floating manner, and includes a turntable 12 for a CD and a DC motor 13 as a drive source thereof. The top plate 20 arranged on the upper surface side of the traverse plate 10 is rotatably attached to one end of the traverse plate 10 by a hinge pin 22.

A loading roller 18 is disposed on the other end side of the traverse plate 10. Both ends of the roller 18 are supported by roller arms 14, and the roller arms 14 are rotatably assembled to the chassis by hinge pins 16. The roller 18 is pressed against the lower surface of the pad 19 fixed to the chassis side at all times (except during play) by the elastic force that urges the roller arm 14 around the hinge pin 16. .. Then, a part of the CD is inserted between the roller 18 and the pad 19, and the roller 18 is rotated by being driven by a motor (not shown), so that the loading of the CD is started.

On the back surface side of the top plate 20, there is provided a disk stopper 30 capable of receiving the outer circumference of the CD during loading. The disc stopper 30 is attached to the top plate 20 so as to move along a guide hole 24 formed in the CD rodig direction at a substantially central position of the top plate 20.

That is, the disc stopper 30 includes a first regulation position shown in FIGS. 1 and 2 for positioning a small-diameter CD (diameter 8 cm disc) at its play position, and a large-diameter CD (diameter 12 cm disc as will be described later). ) Can be moved to and from a second restriction position (see FIG. 5) for positioning the).

Moreover, a stopper interlocking member 36 is rotatably attached to the surface side of the top plate 20 by a shaft 38. The elongated hole 39 formed in the extension of the stopper interlocking member 36 is formed in the disc stopper 30 and is connected to the projection 32 located on the front surface side of the top plate 20 from the guide hole 24. There is. Therefore, the stopper interlocking member 36 rotates about the shaft 38 in conjunction with the movement of the disk stopper 30. A locking pin 40 is fixed to the back side of the stopper interlocking member 36, and the pin 40 is inserted into the arc hole 26 of the top plate 20 by rotating the stopper interlocking member 36 around its axis 38. Displace along.

A lock member 50 made of synthetic resin is mounted between the front surface of the top plate 20 and the back surface of the stopper interlocking member 36 so as to be slidable in a direction orthogonal to the moving direction of the disk stopper 30. There is. That is, the lock member 50 slides with respect to the top plate 20 by being guided by two holes 28 formed in a direction orthogonal to the guide hole 24 for the disk stopper 30. The shaft 38 of the stopper interlocking member 36 is located in the lock member 50, and a long escape hole 51 is formed in the sliding direction in order to avoid interference with the shaft 36.

In the lock member 50, two lock recesses 52 and 53 are formed at the end of the stopper interlocking member 36 on the side corresponding to the lock pin 40. When the disk stopper 30 is in the first restricting position shown in FIGS. 1 and 2, the locking pin 40 is engaged with the one locking recess 52. In this state, the stopper interlocking member 36 cannot rotate about its axis 38, so that the disk stopper 30 is locked at the first restricting position.

A return spring 54 is provided between the stopper interlocking member 36 and the lock member 50. The elastic force of the spring 54 acts to return the lock member 50 to the lock position shown in FIGS. At the same time, the elastic force of the spring 54 acts so as to rotate the stopper interlocking member 36 to the position shown in the drawing (the position for holding the disk stopper 30 in the first restricting position).

An arm-shaped detection member 60 is arranged on the side where the CD is inserted between the roller 18 and the pad 19. The detection member 60 is rotatably attached to a chassis (not shown) by a support shaft 61. An interference pin 62 is fixed to one end of the detection member 60, which interferes with the outer circumference of at least a large-diameter CD during loading or unloading.

An end of an interlocking lever 64, which is also rotatably attached to the chassis by a support shaft 65, is operably coupled to the other end of the detecting member 60. At the free end of the interlocking lever 64, an action piece 66 is formed which can be brought into contact with the part 56 of the lock member 50.

When loading (or unloading) a large-diameter CD, the interference pin 62 of the detection member 60 is pushed on the outer circumference of the CD, and the detection member 60 rotates about its support shaft 61. When the interlocking lever 64 pivots around its support shaft 65 in conjunction with this, the action piece 66 hits a part 56 of the lock member 50, and the lock member 50 is unlocked from the lock position shown in the figure to be described later. It functions to slide towards the position (see Figure 4).

In the above configuration, when a CD having a small diameter is inserted between the roller 18 and the pad 19 and the loading is started as described above, the CD is in the first regulation position shown in FIGS. It is received by the disk stopper 30 which is locked by and is positioned at its play position. However, when a small-diameter CD is biasedly inserted in the width direction of the player, the outer circumference of the small-diameter CD abuts on the interference pin 62 of the detection member 60, as in the case of loading a large-diameter CD described below. The detection member 60 may be rotated to cause the lock member 50 to slide to the lock release position shown in FIG. However, in this case, the locking member 50 has returned to the locked position again by the time the small-diameter CD reaches the position where it is received by the disk stopper 30, so the disk stopper 30 is locked in the first restricting position. ing.

After the small-diameter CD is positioned at the play position by the disc stopper 30, the top plate 20 is rotated around the hinge pin 22 to the state shown in FIG. As a result, the CD is set on the turntable 12 of the traverse plate 10 and is in a play state. At this time, the roller arm 14 is also rotated around its hinge pin 16 so that the roller 18 is separated from the CD.

Next, loading of a large-diameter CD will be described. First, it is assumed that the disk stopper 30 is locked at the first restricting position. When the loading of a large-diameter CD is started there, the outer periphery of the CD abuts on the interference pin 62 of the detection member 60, and the detection member 60 is pivoted about its support shaft 61. As a result, as described above, the locking member 50 is slid to the unlocked position shown in FIG. 4 through the rotation of the interlocking lever 64.

When the locking member 50 slides to the unlocked position, the locking recess 52 is disengaged from the pin 40 of the stopper interlocking member 36, and the stopper driving member 36 becomes rotatable about the shaft 38. . That is, the disk stopper 30 is unlocked at the first restricting position, and then moves to the second restricting position shown in FIG. 5 together with the large-diameter CD that continues to load.

However, when the loading of the large diameter CD further progresses from the state of FIG. 4, the interference pin 61 follows the outer periphery of the CD by the force of the return spring (not shown) acting on the detection member 60. It begins to displace in the original direction. That is, both the detection member 60 and the driving lever 64 rotate in the original direction, and the lock member 50 also slides toward the lock position by the action of the spring 54. In the state of FIG. 5, the detection member 60 and the interlocking lever 64 are completely returned to their original positions, and the lock member 50 is returned to the locked position.

When the disc stopper 30 moves together with the CD, the stopper interlocking member 36 also rotates to the state shown in FIG. 5, and the pin 40 thereof is already in the lock position. Engage. As a result, the disk stopper 30 is locked in the second restricting position. Therefore, the large-diameter CD is positioned in its play position by the disc stopper 30 in the second regulation position. After that, as in the case of the small-diameter CD, the top plate 20 rotates to enter the play state.

When unloading a large-diameter CD, the outer periphery of the CD again contacts the interference pin 62 of the detection member 60 to rotate the detection member 60 and the interlocking lever 64. As a result, the lock member 50 slides to the unlock position, and the lock recess 53 is disengaged from the pin 40 of the stopper interlocking member 36. As a result, the stopper interlocking member 36 is rotated in the original direction from the position shown in FIG. 5 by the force of the spring 54. As a result, the disc stopper 30 is interlocked with the rotation of the stopper interlocking member 36, and is moved toward the first regulation position as the CD is unloaded.

When the unloading of the large-diameter CD is completed, the lock member 50 is returned to the lock position and the disc stopper 30 is returned to the first restricting position. The pin 40 of the stopper interlocking member 36 is engaged with the lock recess 52 of the lock member 50, so that the disk stopper 30 is locked in the first restricting position.

[0030]

[Effect of the device]

 As described above, according to the present invention, the locking and unlocking of the disc stopper at the two restricting positions for positioning the small-diameter CD and the large-diameter CD at the respective play positions can be realized by the reciprocating slide of one locking member. Therefore, the structure as a compact disc player is simplified.

[Brief description of drawings]

FIG. 1 is a plan view showing a floating portion of a CD player when loading a single CD.

FIG. 2 is a side sectional view of FIG.

FIG. 3 is a cross-sectional view showing a play state in correspondence with FIG.

FIG. 4 is a plan view showing a loading state of a large-diameter CD.

FIG. 5 is a plan view showing a loading completed state of a large diameter CD.

[Explanation of symbols]

 30 disk stopper 50 lock member 60 detection member

Claims (1)

[Scope of utility model registration request] 1. A disc stopper which is capable of receiving a compact disc at the time of loading and is movable between two restricting positions for positioning a compact disc of a small diameter and a compact disc of a large diameter at respective play positions. , A lock member which is slidable between a lock position where the disc stopper can be locked at each of two restricting positions and a lock release position where the disc stopper is released, and which always receives elastic force in a direction toward the lock position, A player for a compact disc, comprising a detection member that is actuated so as to slide the lock member once toward the unlock position by receiving an interference action of the outer circumference of the large-diameter compact disc when the disc is loaded or unloaded.