JPH0477387B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a recording disc playback device that can automatically play a disc by taking out the disc from a disc case containing a disc-shaped recording medium (hereinafter referred to as a disc). It is related to.

Conventional Technology Conventionally, in playback devices for high-density recording disks, such as video disks, the disk placed in a cylindrical disk case is manually moved to the inner part of the playback device, as shown in Japanese Patent Application Laid-Open No. 111158/1983. There were many playback devices that adopted a semi-automatic loading method in which the case is inserted and the empty case is manually removed, but in this case, the case must be moved back and forth a lot, and the loading system is fully operable to withstand harsh use by the user. There were a number of problems, including the difficulty in configuring the mechanism. In addition, there was a market demand for automatic loading of tape cassettes from the front, such as in VTRs, and even conventional audio players, and video disc playback devices For example, JP-A-59-93221 and JP-A-59-93226.
The technology shown in the above publication has been proposed. This is equipped with a clamping means for clamping the disc and a transporting means for transporting it within the playback device, and the user can automatically take the disc in and out of the case just by slightly inserting the disc case. . In this configuration, the transport body holding the disc and the lid is guided by one rail and automatically reciprocates inside the playback device to take out and put in the disc, and the disc playback means is guided by another rail to move the disc in and out. It moves back and forth on the recording surface.

An example of the conventional recording disk reproducing apparatus mentioned above will be described below with reference to the drawings.

Figure 4 is an external perspective view showing an example of a conventional autoloading type recording disc playback device, and Figures 5 and 6 are
FIG. 7 shows a part of the mechanism and its operation diagram. The main body of the playback device is roughly divided into a chassis 1, an outer case 2, a rotating body 3, an opener block 4 for opening the case, a chucking block 5 for taking out the disk, a transfer block 6 for transporting the chucking block 5, and a chucking block. Detection switches 7 for detecting the position of the disc, a lift mechanism 8 for guiding the lifting and lowering of the disk, a loading block 9 for driving the opener block 4, the lift mechanism 8, etc., an arm housing 10 equipped with a playback head, It is composed of a sensor feed block 11 and the like that feed the sensor in the direction. (For a detailed explanation of each block, see Japanese Patent Application Publication No. 1989-59
Figure 5 shows a detailed front view and plan view of the tracking block 5, Figure 6 is a plan view when the disc is taken out of the case, and Figure 7 is a diagram showing the inside of the player. A plan view of the disk being transferred is shown.
The movable base 20 has four rollers 20 attached to the pin 2.
2, and is rotatably caulked and engaged with the rail 23 as shown in the partial sectional view of FIG.
Further, the movable base 20 has a roller 24 and a pin 25.
It is rotatably supported around the center. A clamp arm 26 is integrated with the movable base 20 and has a claw 26a for grasping the disk, and further holds a leaf spring section provided on the lid inside the disk case to release the engagement with the lid case. The lid holding member 27 is also integrally constructed. Finger 28 is claw 2
8a, is rotatably supported by a shaft 29, and biased by a spring 30 in the direction of arrow 31a in FIG. Two notches 14a, 14 in the lid
The clampers 32 and 33 that engage with the movable base 20 are supported by pins 34 and 35, respectively, so as to be horizontally rotatable relative to the movable base 20. Additionally, the clampers 32 and 33 have cam grooves 37 and 38 provided in a slider 36 that slides along the movable base surface.
There are respective driven shafts 39 and 40 integrally guided by. The slider 36 has a substantially plate-like shape, and cam grooves 37 and 38 are guided by pins 34 and 35 to move substantially linearly in the direction of arrow _Y1 or _Y2 in FIG.
Further, a roller 41 that can rotate around a pin 19 is attached to the slider 36, and the pin 19 is press-fitted into a hole in the slider 36. Further, the slider 36 includes a protrusion 36a and a spring hook 36.
b, a protrusion tapered portion 36d is integrally formed on the opposite surface of the contact portion 36c and the protrusion portion 36a. The spring 42 is loaded onto the spring hook portion of the movable base 20 and the spring hook portion 36b of the slider 36, so that the slider 36 is always biased in the direction of arrow _Y2 .
The protruding tapered portion 36d contacts the finger 28 when the slider 36 is in the _Y2 direction, and the contact is released when the slider 36 slides in the _Y1 direction, allowing the finger 28 to rotate. The rotating arm 43 is horizontally rotatably supported on the movable base 20 by a fulcrum 44 and biased counterclockwise by a spring 45, and has a contact portion 43a that contacts the lid and a protrusion 36a. Slope-shaped abutting portion 43b that abuts
is formed. Reference numeral 46 denotes a contact plate, which is attached to the movable base 20 at a position where it can come into contact with the seven detection switches in the player. A connecting piece 47 is connected to a belt provided on the transfer block 6 and attached to the movable base 20. Next, the schematic structure of other members that come into contact with the chucking block will be explained. A rail A50 is integrally formed on the chassis 1 and comes into contact with the chucking roller 24.
and a rail B that comes into contact with a roller 51 rotatably attached to the main body of the arm housing 10
There are 52. The chassis 1 also has a tapered member 53 that makes the slider 36 movable in the Y ₁ and Y ₂ directions when the roller 41 comes into contact with it, and a receiving member 54 that receives the lid. There is a lever 56 for moving in the _Y1 direction. Arm housing 10
is slidably attached to a shaft 55 fixed to the chassis 1, and is movable by the shaft 55 and rollers 51 that move on a rail B52.

The player also has a switch 56 inside the player that contacts the abutting portion 36c of the slider 36 for changing the leading direction of the tracking from the _X1 direction to the _X2 direction.

The operation of the tracking block of the recording disk reproducing apparatus constructed as described above will be explained below. The disk holder can be in the following three states. The first state is the "lid disc holding state". In this state, the slider 36 is in a position closer to the direction of arrow _Y2 , and the clampers 32 and 33 are guided by the driven shafts 39 and 40 by the cam grooves 37 and 38, respectively, so that the lid is closed as shown in FIG. 5a. and holds the disc between them. At this time, the rotating arm 43 is in contact with the lid at the contact portion 43a.
The fingers 28 rotate in the direction of the arrow 31b as the protruding tapered portions 36d come into contact with each other in a tapered manner, so that the fingers 28 are in a state of clamping the disk. In this state, the outer periphery of the disk is held between the claw 26a of the clamp arm 26 and the claw 28a of the finger 28, so that they are not in contact with the recording surface of the disk. The second state is the "lid holding state". In this state, slide the slider 3 with the lid latched and the disc not clamped.
6 is located approximately midway between FIGS. 5a and 5b. The clampers 32, 33 and the rotating arm 43 are all in the same state as the "lid disk holding state". In this state, the slider 36 is set as indicated by the arrow in FIG. 5a.
Since it has moved slightly in the _Y1 direction, the protruding tapered portion 36d and the finger 28 are not in contact with each other, and therefore the finger 28 is opened in the direction a of the arrow 31 by the biasing force of the spring 30, and does not clamp the disk. be. This is a state in which the tracking block 5 is moved and the roller 41 rides on the tapered portion 53a of the tapered member 53 while moving the slider 36.

The state shown in FIG. 3 is a "non-holding state". In this state, as shown in FIG. 5b, the lid is not latched and the disc is not clamped. The slider 36 is in the position closest to the left side ( _Y1 direction) in the figure among the three states, and the clampers 32 and 33 are in the open state with the driven shafts 39 and 40 guided by the cam grooves 37 and 38, respectively. be. As described above, the fingers 26 are open in the direction a of the arrow 31 and are in a state where they do not clamp the disk. The rotating arm 43 has a contact portion 43a
The protrusion 36a of the slider 36 comes into contact with the slider 36, and the slider 36 is prevented from sliding to the right ( _Y2 direction) in the figure by the biasing force of the spring 42.
This position is when the tracking block 5 is transferred from behind the player to the front (X ₁ direction).
This is achieved by the roller 41 coming into contact with the lever 56 along the inclination and moving the slider 36 in the _Y1 direction. These three states are all changes in state when the tracking block 5 is transferred within the player by the transfer block 6, and at that time, the rail A5 on the opposite side from the transfer block 6
The roller 24 rotates on the roller 24 to ensure smooth transfer. In this way, with respect to the height of the player and the positioning of the tapered member 53 and the lever 56, in many cases the tracking block uses the rail that serves as a guide at the end of the player, resulting in a cantilever-like structure. It's summery.

Problems to be Solved by the Invention However, in these configurations, it is necessary to provide a gap between the tracking block and the rail to ensure smooth _running . _, This causes a problem in that it does not move and does not engage. Also, to solve this problem, it is possible to differ in advance the amount of left and right engagement with the notch by a certain amount of play, but in this case, the chatting play will be counterclockwise in the X ₁ direction, and to the right in the X ₂ direction. Since it is transferred while being subjected to force around the lid, it is necessary to correct the play in the counterclockwise direction beforehand and set it parallel to the lid, which increases the number of adjustment steps and is not suitable for mass production in terms of reliability. was considered unsuitable. Furthermore, due to the way the disc case is inserted, it is difficult for both the left and right notches of the lid to engage with the clamper at the same time, and if the above operation occurs, the lid and disc will not be automatically loaded into the player. It had a fatal flaw.

In order to solve the above-mentioned problems, the present invention improves the conventional auto-loading system and provides two
To provide a recording disk reproducing device having a structure that allows the lid to be stably held by easily detecting two notches separately.

Means for Solving the Problems In order to solve the above-mentioned problems, the recording disk reproducing device of the present invention includes a case body having an opening at one end for storing a disk on which a signal is recorded in the device, and a case body having an opening at one end. A recording disk reproducing device using a disk case comprising a lid having a first notch and a second notch so as to be removably engaged and retainable in the device, wherein the opening and a case engaging means for removably fixing the case body by releasing the engagement between the case body and the lid; a first abutting member that abuts the first notch and the second notch; holding means for holding the lid with a second abutting member that abuts;
a slidable slide member having a first protrusion and a second protrusion and an engagement groove that engages the holding means; an openable/closable holding member that holds the disk and releases the disk while holding the lid at a second position, and waits while holding the lid at a third position; The sliding member is prevented from sliding by contacting the first projection, and the contact with the first projection is released by contact between the first contact member and the first notch. a first lock release means that contacts the second protrusion to prevent the slide member from sliding; a second lock release means for releasing the contact with the protrusion of the holding means, the sliding member, and the clamping member from the first position to the third position via the second position; The device is equipped with a transfer means for reciprocating the member and the first and second lock release means.

Function The present invention operates to hold the lid only when the means for engaging with the two notches of the lid is in a certain positional relationship with each notch.
Regardless of the state in which the lid is inserted, there will be no mis-engagement with the notch, and various defects (such as scratched discs, scratches on the disc,
This solves problems such as the lid falling inside the player and the mistake of collecting it in the case. As a result, even if only one side of the notch is in the engaging position, it is possible to set a sequence program that allows the chuck to stand by at the rest position in a stable state without any operation of the two engaging means. It is something.

Embodiment A recording disk reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of a recording disk reproducing apparatus according to an embodiment of the present invention, and FIGS. 2 and 3 show a partial mechanism and its operation diagram. The main body of the playback device is roughly divided into a chassis 61, an outer case 62, a rotating body 63, an opener block 64 that opens the case, a chucking block 65 that takes out the disc, a transfer block 66 that transports the chucking block 65, and a chucking block. Detection switches 67 that detect the position of the disc 65, a lift mechanism 68 that guides the lifting and lowering of the disk, a loading block 69 that drives the opener block 64, the lift mechanism 68, etc.
It is composed of an arm housing 70 on which a reproducing head is mounted, a sensor feeding block 71 for feeding the arm housing 70 toward the disk, and the like. (For a detailed explanation of each block, see JP-A-59-93221, for example.
2 shows a detailed front view and a plan view of the tracking block 65, and FIG. 3 shows a plan view of the player with the disc removed. Four rollers 81 are rotatably caulked to the movable base 80 by pins 82 and are engaged with the rails 83 as shown in the partial sectional view B of FIG. 1. Further, two rollers 84 are supported on the movable base 80 so as to be rotatable around a pin 85. A clamp arm 86 is integrally formed with the movable base 80 and has a claw 86a for grasping the disk.Furthermore, the movable base 80 holds a leaf spring section provided on the lid 14 inside the disk case and is attached to the lid 14. A lid holding member 87 that releases engagement with the case is also integrally constructed. The finger 88, which is a clamping member, has a claw 88a, is rotatably supported by a shaft 89, and is supported by a spring 90 as shown by the arrow 9 in FIG.
It is biased in the direction 1a. Clampers 92 and 93, which are two contact members that contact the two notches 14a and 14b of the lid 14, are provided with pins 94 and 9, respectively.
5 so as to be horizontally rotatable relative to the movable base 80. Also clamper 92,
93 is integrally provided with driven shafts 99 and 100, respectively, which are guided by cam grooves 97 and 98 provided in a slide member 96 that slides along the movable base surface. The slide member 96 is approximately plate-shaped and has a cam groove 9.
7 and 98 are guided by pins 94 and 95 and move substantially linearly in the direction of arrow _Y1 or _Y2 in FIG. Further, a roller 101 rotatable around a pin 19 is attached to the slide member 96, and the pin 19 is press-fitted into a hole in the slide member 96. Further, the slide member 96 has two protrusions 96a, 96.
a', spring hanging part 96b, contact part 96c, protrusion 9
A protruding tapered portion 96d is integrally formed on the opposite surface to 6a. The spring 102 is loaded onto the spring hook 80a of the movable base 80 and the spring hook 96b of the slide member 96, so that the slide member 96 is always biased in the direction of arrow _Y2 . The protruding tapered portion 96d comes into contact with the finger 88 when the slide member 96 is in the _Y2 direction, and when it slides in the _Y1 direction, the contact is released, making the finger 88 rotatable. Rotating arms 103 and 119, which serve as two lock release means for releasing the contact with the protrusions 96a and 96a', are horizontally rotatably supported on the movable base 80 by means of fulcrums 104 and 120, and supported by springs 105 and 121. Therefore, the contact portions 103a and 119 are biased counterclockwise and come into contact with the lid.
Slope-shaped abutting portions 103b and 119b are formed to abut the protruding portions 96a and 96a'. The rotating arms 103, 119 are located close to the notches 14a, 14b of the lid. 106 is a contact plate and detection switches 67 inside the player.
It is attached to the movable base 80 at a position where it can come into contact with the movable base 80. Reference numeral 107 is a connecting piece, and a transfer block 6 serves as a driving source for reciprocating the tracking block.
A movable base 80 connected to a belt provided at 6
attached.

The operation of the tracking block of the recording disk reproducing apparatus constructed as described above will be explained below. The disk holder can be in the following three states. The first state is the "lid disk holding state". In this state, the slide member 96 is at a position closer to the direction of the arrow _Y2 , and the clampers 92 and 93 are guided by the driven shafts 99 and 100 by the cam grooves 97 and 98, respectively, so that the clampers 92 and 93 move as shown in FIG. 2a. It holds the lid 14 and clamps the disk. At this time, the rotating arms 103, 119 are connected to the contact portions 103a, 11
It is in contact with the lid 14 at 9a. The fingers 88 rotate in the direction of the arrow 91b as the protruding tapered portions 96d come into contact with each other in a tapered manner, so that the fingers 88 are in a state of holding the disk. In this state, the outer periphery of the disk is held between the claw 86a of the clamp arm 86 and the claw 88a of the finger 88, so that they are not in contact with the recording surface of the disk. The second state is the "lid holding state". In this state, the lid is latched and the disc is not clamped, and the slide member 96 is in the second position.
It is located approximately halfway between figures a and b. clamper 9
2, 93 and the rotating arms 103, 119 are both in the same state as the "lid disk holding state". In this state, the slide member 96 is moved further than the arrow shown in FIG. 2a.
Since it has moved slightly in the _Y1 direction, the protruding tapered portion 96d and the finger 88 are not in contact with each other, and therefore the finger 88 is opened in the direction a of the arrow 91 by the biasing force of the spring 90, and does not clamp the disk. be. This is Chaking Block 65
is transferred and the tapered part 113 of the tapered member 113
This is a state in which the slide member 96 is moved while the roller 101 rides on the roller 101a. The state shown in FIG. 3 is a "non-holding state". In this state, as shown in FIG. 2b, the lid is not latched and the disc is not clamped. The slide member 96 is in the position closest to the left side ( _Y1 direction) in the figure among the three states, and the clampers 92 and 93 are in the open state with the driven shafts 99 and 100 guided by the cam grooves 97 and 98, respectively. be. As described above, the fingers 86 are opened in the direction a of the arrow 91 and are in a state where they do not clamp the disk. The rotating arms 103 and 119 are connected to the contact portion 10
3a, 119a and the protrusion 96 of the slide member 96
a, 96a' are in contact with each other, and the slide member 96 is in contact with the spring 1.
02 prevents it from sliding to the right in the figure ( _Y2 direction). This position is reached when the tracking block 65 moves from behind the player to the front ( _X1 direction).
This is achieved by the roller 101 coming into contact with the inclination 16 and moving the slide member 96 in the _Y1 direction.

These three states are all changes in state when the tracking block 65 is transferred within the player by the transfer block 66, and at that time the two rollers 84 rotate in the same way on the rail 110 on the opposite side from the transfer block 66. This ensures smooth transfer. In the chucking block of this embodiment having a cantilever structure, the two rotating arms 103 and 119 independently control the engagement between the two notches 14a and 14b of the lid 14 and the clampers 92 and 93, respectively. This is a detection method.

Effects of the Invention As described above, the present invention includes a case body having an opening at one end for storing a disc on which a signal is recorded in the device, and a case body that is removably engaged with the opening and can be held in the device. A recording disc playback device using a disc case comprising a lid having a first notch and a second notch, wherein the engagement between the opening and the lid is released and the case is removed. The lid is held by a case engaging means that removably fixes the main body, a first abutting member that abuts the first notch, and a second abutting member that abuts the second notch. a first protrusion and a second protrusion;
a slidable slide member having an engagement groove that engages with the holding means; a first slide member of the slide member;
An openable/closable device that holds the lid at the second position while simultaneously clamping the disc, releases the clamping of the disc while holding the lid at a second position, and waits while holding the lid at a third position. A clamping member contacts the first protrusion at the first position to prevent the slide member from sliding, and the first contact member and the first notch contact each other. a first lock release means that abuts against the second protrusion to prevent the slide member from sliding; and a first lock release means that abuts the second protrusion to prevent the slide member from sliding; a second lock release means that releases the contact with the second protrusion by contact with the second protrusion, and a holding means that extends from the first position to the third position via the second position. and a transfer means for reciprocating the slide member, the clamping member, and the first and second lock release means, while independently detecting the two notches of the lid.
It becomes possible to operate the means to clamp the lid only when the chucking block and the notch are in the correct position, thus eliminating the difference in play between the left and right sides due to the cantilever configuration of the chucking block. Even if this occurs, the means for holding the lid will operate reliably, making this structure suitable for mass production. In addition, the present invention is provided with two rotating arms so that the lid is held at a stable position after independently detecting the positions of the two notches on the lid. This is because the slide members slide so that the lock of the slide member is released and the clamper rotates only when each clamper is in a position to clamp the notch.
Therefore, it is possible to securely hold the lid with the two notches regardless of the variation in the amount of backlash on the left and right sides of the chucking block, which is cantilevered, without having to adjust the parallelism of the chucking block with the lid. Accordingly, it is possible to provide a recording disk reproducing device that can eliminate mistakes in holding the lid due to autoloading.

That is, the present invention provides two lock release means, detects the presence of the disc case lid at each position, and clamps the lid only when the existence of the lid is detected at two positions. This provides the effect that the lid can be reliably clamped regardless of variations in the position of the clamping means and the position of the clamping means.

[Brief explanation of the drawing]

FIGS. 1A and 1B are an overall perspective view and a partial sectional view of a recording disk reproducing apparatus according to an embodiment of the present invention, and FIGS. 2A, B, C, and D are plan views of a tracking block in the same apparatus. 3 is a plan view of the entire device, FIGS. 4A and 4B are perspective views and partial sectional views of the entire conventional recording disk reproducing device, and FIGS. 5A, B,
C and D are plan views of the tracking block in the conventional device, FIG. 6 is a plan view of the entire device showing the state in which the disk is being pulled out from the case, and FIG. (in the middle of). 61... Chassis, 64... Opener block, 65... Chasing block, 66... Transfer block, 80... Movable base, 92, 93...
... Clamper, 96 ... Slide member, 103,
119...Rotating arm.

Claims (1)

[Claims] 1. A case body having an opening at one end for storing a disc on which a signal is recorded in the device, and a first notch and a second notch that are removably engaged with the opening and can be held in the device. A recording disc playback device using a disc case comprising a lid having a notch, the case engaging mechanism releasing the engagement between the opening and the lid and removably fixing the case body. a holding means for holding the lid by a first abutting member that abuts the first notch and a second abutting member that abuts the second notch; and a first protrusion. and a second protrusion, and a slidable sliding member having an engagement groove that engages with the holding means, and a first position of the sliding member that holds the lid and simultaneously holds the disc. an openable/closable clamping member that releases the clamping of the disk while holding the lid in a second position and waits while holding the lid in a third position; a first lock release that prevents the sliding member from sliding by abutting the first abutting member and releasing the abutment with the first projection by abutting the first abutting member and the first notch; a means for abutting against the second protrusion to prevent the slide member from sliding; and a means for abutting against the second protrusion due to abutment between the second abutting member and the second notch; a second lock release means for releasing the lock; and a second lock release means for releasing the lock from the first position to the second lock.
transport means for reciprocating the holding means, the slide member, the clamping member, and the first and second lock release means to the third position via the first position; A recording disk reproducing apparatus characterized in that the first and second contact members operate when the lock release means and the second lock release means operate simultaneously.