JP3562394B2 - Driving device for information recording medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drive device for an information recording medium, and more particularly to a disc player that reproduces recorded information while rotating a disc such as a CD or a DVD.
[0002]
[Prior art]
Conventionally, this type of apparatus has a device used for reproducing a disc housed in a housing as a drive unit, and guides the disk onto the drive unit from a slit-shaped loading port formed in the housing via a loading mechanism, or a drive unit. Is mounted on a movable shelf so that when the disk is loaded, the shelf can be pulled out from the housing.
[0003]
However, in such a structure, many of the operation switches are exposed from the outer surface of the housing, so that not only the appearance is impaired but also the switches are erroneously operated when not in use.
[0004]
On the other hand, there is a type in which an opening / closing lid is attached to the upper surface of the housing via a hinge, a drive unit is installed in a portion covered with the opening / closing lid, and a disk can be attached / detached by opening the opening / closing lid. According to such a disc player, it is possible to provide many switches on the inside of the opening / closing lid and shield them when not in use.
[0005]
[Problems to be solved by the invention]
However, in the player with a lid as described above, even if all of the switches can be shielded, the lid must be opened and closed each time operations other than the disk exchange such as pause, music selection, volume adjustment, etc. There is an inconvenience that it has to be done, and there is a difficulty in operability such as delaying operations that require urgent action.
[0006]
Of course, the lid can be left fully open during use, but this is not preferable for the disk and the device itself because the aesthetics are impaired and dust and the like easily enter and accumulate inside.
[0007]
Therefore, for example, as disclosed in Japanese Patent Laid-Open No. 7-307087, the lid is slid so that it can be switched between the fully closed state, the half open state, and the fully open state, and all operations other than the attachment / detachment of the disc can be performed in the half open state. There is something like that.
[0008]
However, when attaching a slide type lid, it is very difficult to reduce the size of the device because it is necessary to secure a suitable operating range in the direction of lid movement by making the casing vertical, etc. Thus, in a configuration in which the playback unit is pushed out in conjunction with the slide of the lid, a mechanism for operating the lid and the unit is mixed, resulting in a very complicated structure.
[0009]
The present invention has been made in view of the circumstances as described above, and the purpose of the present invention is to make it as small as possible and have a good appearance, and to smoothly attach and detach information recording media, mainly disks. Another object of the present invention is to provide a disc player and other information recording medium driving device that can be used.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an information recording medium in which an opening / closing lid 2 is attached to a housing 1, a portion covered by the opening / closing lid 2 is a stage 8, and a driving body 10 is driven to drive the information recording medium to the stage. Drive device
The opening / closing lid 2 is attached to the housing 1 via a direction changing mechanism 20 that can be switched alternately between a lateral displacement movement along the stage 8 and a rotational movement around an axis along the edge of the opening / closing lid. While the stage 8 is partially opened and closed by the lateral displacement movement of the opening and closing lid 2, the stage 8 is fully opened by the rotational movement, and the information recording medium can be attached to and detached from the driving body 10,
The direction changing mechanism 20 is provided with a protrusion 31 provided at a portion which is given a predetermined rotational angular displacement by a power source 26 for operating the direction changing mechanism 20 and is separated from the center of rotation. ₀ And relay point M ₁ And the relay point M ₁ And end point M ₂ A moving node 21 which moves in a circular orbit between and a protrusion 31 of this driving node is a starting point M ₀ And relay point M ₁ The follower 22 that is swung by engaging with the projection 31 when moving between and the swinging cover that moves the open / close lid 2 that is swung in the opposite direction by the follower to move laterally. The arm 23, the opening / closing lid 2 and the driving node 21 are connected to each other so that the projection 31 of the driving node 21 is connected to the relay point M. ₁ And end point M ₂ And a support arm 24 for rotating the opening / closing lid 2 around the connecting portion 38 of the swing arm when moving between the two.
[0011]
Also, an information recording medium driving apparatus is provided with a driving body 10 that attaches an opening / closing lid 2 to the housing 1 and uses the stage 8 as a portion covered by the opening / closing lid 2 to drive the information recording medium to the stage.
The opening / closing lid 2 is attached to the housing 1 via a direction changing mechanism 40 that can be switched alternately between a lateral displacement movement along the stage 8 and a rotational movement around an axis along the edge of the opening / closing lid. While the stage 8 is partially opened and closed by the lateral displacement movement of the opening and closing lid 2, the stage 8 is fully opened by the rotational movement, and the information recording medium can be attached to and detached from the driving body 10,
The direction changing mechanism 40 is provided with a bracket 49 fixed to both side edges of the opening / closing lid 2 and a portion separated from the rotation center by being given a predetermined rotational angular displacement by a power source 43 that operates the direction changing mechanism. The provided protrusion 42 is the starting point M. ₀ And relay point M ₁ And the relay point M ₁ And end point M ₂ A moving node 41 that moves in a circular orbit and a protrusion 42 of this driving node is a starting point M ₀ And relay point M ₁ And a swinging arm 51 that moves the open / close lid 2 laterally via a bracket 49 that is connected while being swung by the driving node 41. The bracket 49 relays the projection 42 of the driving node. Point M ₁ And end point M ₂ The projection lid 42 is configured to rotate and move the opening / closing lid 2 while being swung around the connecting portion 51B with the swing arm.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, application examples of the present invention will be described in detail with reference to the drawings. First, as a preferred example of the present invention, FIG. 1 shows reproduction of an optical disc such as a CD (compact disc) or DVD (digital video disc) or a disc-shaped information recording medium (hereinafter referred to as a disc) such as a magnetic or magneto-optical disc. Alternatively, a disc player having a radio function used for recording information on them is shown.
[0013]
In FIG. 1, reference numeral 1 denotes a housing, in which a turntable, which is driven to rotate a disk, and an electronic component such as an optical pickup that reads recorded information while traveling along the rotating disk are united. A converted drive unit is installed. Reference numeral 2 denotes an opening / closing lid attached to the upper surface of the opening / closing mechanism via a direction changing mechanism, which will be described later. Also, 3 is a push button type main power switch, 4 is the same operation switch (first operation switch), and 5 is a display unit composed of a liquid crystal panel or the like for displaying the operating state of the disk, etc. The device is exposed from the front surface of the housing 1 and can always be seen regardless of the state of the opening / closing lid 2. In particular, the main power switch 3 and the operation switch 4 can immediately respond to the switching operation. .
[0014]
Among these, the operation switch 4 is used for opening / closing the opening / closing lid 2, and when the opening / closing lid 2 is pressed and operated in the state shown in FIG. It is designed to be partially opened.
[0015]
FIG. 2 shows this state. As is apparent from this figure, the open / close lid 2 is moved laterally (translated) along the upper surface of the housing 1 as shown by the arrow in the figure by operating the operation switch 4. The amount of movement is about several centimeters. Particularly, the region opened by this movement is the operation unit 6, and the operation unit 6 includes a second operation switch 7 </ b> A along the front edge of the opening / closing lid 2 as shown in the figure. The operation switch group 7 is arranged in series. The operation switch group 7 is formed by sequentially arranging buttons for transmitting specific control signals, and includes, for example, start of playback of a disc, pause, start of music selection, volume adjustment, radio reception and others. Among these, the operation switch 7A is installed at one end of the same group, for example, and the open / close lid 2 that is in a half-open state as shown in FIG.
[0016]
If this state is shown and described in FIG. 3, the opening / closing lid 2 can be rotationally moved (oscillated) about the axis along the rear edge as shown by the arrow in the half-open position by the lateral displacement movement. Then, the operation switch 7A transmits a control signal for rotating the opening / closing lid 2 by the pressing operation, thereby enabling the opening / closing lid 2 in the half-open state to be fully opened as shown in FIG. The disk can be attached to and detached from the disk.
[0017]
Here, as is apparent from FIG. 3, the upper surface of the housing 1 is a flat stage 8 covered by the open / close lid 2. The stage 8 is divided into an operation unit 6 in which the operation switch group 7 that can be operated by the operation of the operation switch 4 is arranged as described above, and a loading unit 9 for mounting a disk, among which the operation switch 7A. The loading unit 9 that appears when the open / close lid 2 is fully opened by the above operation is provided with a turntable 10 as a driving body for driving, that is, rotating the disk. In particular, a circular depression 11 that forms the boundary of the loading section 9 with the turntable 10 as the center is formed in the loading section 9, and a window 12 corresponding to the operation area of the optical pickup (not shown) is opened in the depression 11. ing. When the disc mounted on the turntable 10 inside the depression 11 is rotated in a predetermined direction while being held by the turntable 10, the optical pickup moves along the radial direction of the disc inside the window 12. The recorded information is read.
[0018]
The turntable 10 has a well-known self-chucking function that can hold a disk without using a disk-shaped clamper on the opposite side. As a structure, the turntable has several steel balls on the turntable. It is known that the steel balls are provided so as to be slidable in the radial direction, and each steel ball is radially spread toward the periphery of the turntable by a spring pressure. And according to the structure of that kind, the center hole periphery of a disk can be hold | maintained with each steel ball by pushing the center of a disk on a turntable.
[0019]
Next, an example of the direction changing mechanism will be described with reference to FIGS. 4 is a front view showing the mechanism partially cut away, and FIG. 5 is a plan view showing another part of the mechanism cut away. FIGS. The movement from the fully closed state to the fully open state is sequentially shown. In these figures, only one side of the opening / closing lid is shown, but this mechanism is provided on both sides of the housing along both side edges of the opening / closing lid.
[0020]
As is clear from these drawings, the mechanism 20 is composed of four nodes, a driving node 21, a driven node 22, a swing arm 23, and a support arm 24. Among these, the driving node 21 is fixed on the rotating shaft 25 along the inner surface 1A of the housing 1 and the power of the motor 26 as a power source transmitted to the rotating shaft 25 is obtained and the rotating shaft 25 is used as a center of rotation. Conversely, a predetermined rotational angular displacement is given. Here, pulleys 28 and 29 connected by a belt 27 are fixed to the drive shaft of the motor 26 and the rotary shaft 25. In addition, an arc-shaped protrusion 30 centering on the rotation shaft 25 is formed on the driving node 21, and a circular orbit about the rotation shaft 25 is formed in a portion outside the protrusion 30 due to the rotation angle displacement of the driving node. A pin-shaped protrusion 31 is provided that moves while drawing. The driving node 21 together with the driven node 22 constitutes a circumscribed geneva that swings the driven node 22 only when the projection 31 engages with a portion of the driven node 22.
[0021]
The driven node 22 is pin-joined to the inner side surface 1A of the housing as a gear portion 32 having one end forming a swing center, and a guide groove 33 that engages with the projection 31 of the driving node is formed on the opposite end surface. At the same time, arc-shaped slide surfaces 34 are formed on both sides of the guide groove 33 so as to be in sliding contact with the ridge 30 of the drive node.
[0022]
On the other hand, one end of the swing arm 23 is pin-joined to the opening / closing lid 2, and a gear portion 35 that meshes with the gear portion 32 of the driven node 22 is formed at the other end. A rectangular bracket 2A is formed on both side edges of the opening / closing lid 2, and one end of the swing arm 23 is connected to the rear end side of the bracket 2A, and the center of the gear portion 35 is the swing center. Pin-bonded to the inner surface 1A of the housing.
[0023]
The support arm 24 is a plate-like link having a predetermined shape, and connects the opening / closing lid 2 and the drive node 21. In particular, the prime mover 21 side is pin-joined as a joint portion 36A to an eccentric point outside the protrusion 30, and the open / close lid 2 side is pin-joined as a joint portion 36B to the front end side of the bracket 2A. The support arm 24 shown in the figure is fan-shaped and a part of the support arm 24 is formed with a relief groove 37 straddling the rotary shaft 25. However, the relief groove 37 may be omitted by making its entire shape arcuate.
[0024]
Here, the operation of the disc player configured as described above will be described. First, as shown in FIG. 1, when the open / close lid 2 is in a fully closed state, only the display unit 5 and the main power switch 3 and the operation switch 4 appear outside. The main power switch 3 is used to move the internal device to a movable state. For example, the display unit 5 is illuminated by this pressing operation. When the operation switch 4 is pressed in this state, the opening / closing lid 2 is shifted laterally by the primary operation of the direction changing mechanism 20, and as a result, only the operation unit 6 of the stage is opened as shown in FIG. Appears to be operational. Then, by operating the operation switch group 7, it is possible to play a disc loaded in advance in the apparatus, pause, select a song, adjust the volume, and receive a radio.
[0025]
In particular, during the pressing operation of the operation switch 7A, the opening / closing lid 2 is rotationally moved from the half-open state shown in FIG. 2 as shown in FIG. As a result, the loading unit 9 is also opened, and the disc can be attached to and detached from the turntable 10 as the driving body. When the operation switch 7A is pressed again after exchanging the disk or the like, the opening / closing lid 2 is rotationally moved by the reverse operation of the direction changing mechanism 20, and the stage 8 is closed while leaving the operation unit 6. At this time, the exchanged disk can be reproduced by operating the operation switch group 7 as described above. Of course, the operation switch 4 is operated while the disk is being reproduced, and the opening / closing lid 2 is shifted laterally forward. Thus, even the operation switch group 7 can be shielded.
[0026]
When the first operation switch 4 and the second operation switch 7A are operated, the direction changing mechanism 20 operates as follows. First, FIG. 6 shows a state when the opening / closing lid 2 is fully closed as shown in FIG. At this time, the driving node 21 receives the power from the motor 26 and the projection 31 is at the starting point M. ₀ Therefore, it remains stationary while engaging with the guide groove 33 of the driven node. When the operation switch 4 is pressed in this state, a control signal for moving the open / close lid 2 laterally is transmitted to the motor 26 via a control circuit (not shown), whereby the motor 26 is driven and driven. 21 is swung by a predetermined angle in a predetermined direction.
[0027]
In particular, the motor 26 has a relay point M at which the projection 31 of the driving node is detached from the guide groove 33 of the driven node as shown in FIG. ₁ It is driven until it reaches. That is, when the operation switch 4 is operated, the driving node 21 causes the projection 31 to start at the starting point M by the motor 26. ₀ To relay point M ₁ The rotational angular displacement until reaching the value is given. And the projection 31 is the starting point M. ₀ To relay point M ₁ While moving in a circular orbit around the rotating shaft 25, the driven node is engaged with the guide groove 33 of the driven node 22 to swing the driven node in the opposite direction of the driven node 21. For this reason, the swing arm 23 having the gear portion 35 that meshes with the gear portion 32 of the driven node is swung in the opposite direction by the driven node 22 and the connecting opening / closing lid 2 is moved laterally as shown in FIGS. (Retreat). At this time, as shown in FIG. 2, the operation unit 6 of the stage is opened and the operation switch group 7 appears. The open / close lid 2 moves laterally while drawing a gentle arc track by the height change H of the swing arm 23 as shown in FIG. 7, but the connecting portion 38 of the swing arm 23 is a loose hole such as a long hole. Thus, the open / close lid 2 can be shifted laterally while maintaining a certain distance from the stage 8.
[0028]
By the way, the protrusion 31 moves to the starting point M due to the rotational angular displacement of the driving node 21. ₀ To relay point M ₁ 6 to 8, the support arm 24 moves while the joints 36 </ b> A and 36 </ b> B with respect to the driving node 21 and the opening / closing lid 2 are kept parallel to the swing arm 23 around the rotation shaft 25 as shown in FIGS. In this way, the opening / closing lid 2 only moves laterally along the stage 8 and does not rotate.
[0029]
Here, when the operation switch 7A that appears due to the lateral displacement movement is pressed, a control signal for rotating the opening / closing lid 2 is transmitted to the motor 26 via a control circuit (not shown). Re-driving is performed, and the rotational angular displacement is again applied to the prime mover 21. In particular, in the motor 26, the protrusion 31 of the driving node 21 is connected to the relay point M shown in FIG. ₁ To the end point M shown in FIG. ₂ It is driven until it reaches. That is, when the operation switch 7A is operated, the driving node 21 is connected to the relay point M by the motor 26. ₁ To end point M ₂ The rotational angular displacement until reaching the value is given. At this time, the protrusion 31 is not engaged with the guide groove 33 of the driven node, and the end point M ₂ Therefore, only the support arm 24 is swung by the driving node 21 while the driven node 22 and the swinging arm 23 are kept stationary. Thereby, the support arm 24 is gradually pushed up toward the opening / closing lid 2 side of the joint portion 36B with the driving node 21. Thus, the opening / closing lid 2 is rotationally moved around the connecting portion 38 with the swinging arm while the support arm 24 pushes up the front end portion of the bracket 2A as the joint portion 36B. As a result, the stage 8 is fully opened as shown in FIG. 3 or FIG. 11 so that the disk can be mounted on and removed from the turntable 10.
[0030]
If the operation switch 7A is operated again in this state, the direction changing mechanism 20 rotates in a manner opposite to that described above to partially close the stage 8, and then if the operation switch 4 is operated, the opening / closing lid 2 is also operated. Is shifted laterally toward the front and the stage 8 is fully closed. That is, by operating the operation switch 7A when the opening / closing lid 2 is fully opened, the motor 26 is rotated in reverse and the projection 31 of the driving node is moved to the end point M. ₂ To relay point M ₁ And then the projection 31 is moved to the relay point M by operating the operation switch 4. ₁ Starting point M ₀ The motor 26 is driven so as to move to. The control circuit may be configured so that the motor 26 is continuously driven by operating the operation switch 4 when the opening / closing lid 2 is fully opened until the opening / closing lid 2 is fully closed. Here, the drive control of the motor 26 can be performed by providing a rotary encoder or a cam type switch on the rotating shaft 25 in addition to a timer.
[0031]
Although an example of the present invention has been described above, the direction changing mechanism can be formed in various forms other than the above example by combining a link, a cam, a gear, or the like. For example, a system as shown in FIGS. 12 to 14 sequentially show the operating states of the same direction changing mechanism 40. Here, reference numeral 41 denotes a disk-shaped drive node, which is rotatably provided by pin-joining the center thereof to the inner side surface 1A of the housing. In particular, the drive node 41 is provided with a pin-like protrusion 42 at a site separated from the center of rotation. And this drive node 41 also has a protrusion 42 at its starting point M by a motor 43 as a power source. ₀ And relay point M ₁ , And relay point M ₁ And end point M ₂ A rotational angular displacement such as moving in a circular orbit is provided. The driving node 41 is, for example, a gear, a pulley 44 in which the power of the motor 43 is fixed to its driving shaft, a pulley 46 provided on the rotating shaft 45, a belt 47 hung on these pulleys 44, 46, and a rotating shaft 45 It is configured to transmit via a gear 48 fixed to the end.
[0032]
On the other hand, brackets 49 forming a follower are fixed to both side edges of the opening / closing lid 2. In particular, at the lower part of the bracket 49, the protrusion 42 of the driving node is the starting point M. ₀ To relay point M ₁ A guide groove 50 to be introduced at the time of reaching is formed.
[0033]
Reference numeral 51 denotes a triangular plate-like swinging arm, and each top portion 51A to 51C is connected to the inner side surface 1A of the housing, the bracket 49, and the driving node 41, respectively. In particular, the top portions 51A and 51B are respectively pin-bonded to the inner side surface 1A of the housing and the rear end portion of the bracket 49, and the remaining top portion 51C is formed with a guide pin 52 and the guide pin is formed on the back surface of the drive node 41. The cam groove 53 is engaged. Reference numeral 54 denotes a pin fixed to the inner side surface 1A of the housing, and 55 denotes a horizontal groove formed in the bracket 49 corresponding to the pin 54. The groove 55 is guided by the pin 54 when the opening / closing lid 2 moves laterally. After the lateral displacement of the opening / closing lid 2, the groove 55 is removed from the position of the pin 54 so that the rotational movement of the opening / closing lid 2 is not hindered.
[0034]
Then, according to the direction changing mechanism 40 of the present example, the protrusion 42 is moved to the starting point M by the rotational angular displacement of the driving node 41. ₀ To relay point M ₁ , The swing arm 51 is swung in the opposite direction of the drive node 41 along the shape of the cam groove 53 with the top 51A as the center. Is shifted laterally. Further, the driving node 41 is further subjected to a rotational angular displacement by the motor 43, whereby the protrusion 52 is connected to the relay point M. ₁ To end point M ₂ When moving toward, the cam groove 53 of the drive node forms a constant arc so that it is not displaced relative to the guide pin 52 of the swing arm. For this reason, the swing arm 51 is kept stationary without being swung. On the other hand, the protrusion 42 moves while engaging with the guide groove 50 of the bracket and acts to push up the bracket 49. That is, when the projection 42 moves while pressing the side wall of the guide groove 50, the bracket 49 swings in the opposite direction of the driving node 41 around the connecting portion (the top 51 </ b> B of the swinging arm) with the swinging arm 51. The opening / closing lid 2 is rotated while being moved.
[0035]
Here, operation | movement of the direction change mechanism 40 comprised as mentioned above is demonstrated in detail. First, FIG. 12 shows a state when the open / close lid is fully closed as shown in FIG. At this time, the driving node 41 receives the power from the motor 43 and the protrusion 42 is at the starting point M. ₀ Therefore, the bracket is stationary without engaging with the guide groove 50 of the bracket. When the operation switch 4 is pressed in this state, a control signal for moving the open / close lid 2 laterally is transmitted to the motor 43 via a control circuit (not shown), thereby driving the motor 43 to drive the motor. The node 41 is swung in a predetermined direction by a predetermined angle. In particular, the motor 43 has a relay point M at which the drive node protrusion 42 engages with the guide groove 50 of the bracket as shown in FIG. ₁ It is driven until it reaches. That is, when the operation switch 4 is operated, the driving node 41 has the protrusion 42 that has the starting point M by the motor 43. ₀ To relay point M ₁ The rotational angular displacement until reaching the value is given. At this time, the oscillating arm 51 is oscillated in the direction opposite to the prime mover 41 around the top 51A with the guide pin 52 engaged with the cam groove 53 of the prime mover, and is opened and closed via the connecting bracket 49. The lid 2 is moved laterally (retracted) as shown in FIG. As a result, as shown in FIG. 1, the operation unit 6 of the stage is opened and the operation switch group 7 appears. In the case of this example, the opening / closing lid 2 moves laterally while drawing a gentle arc track by the height change of the swing arm 51. However, the connecting portion 51B of the swing arm can be opened / closed as a loose hole. The lid 2 can be moved laterally while maintaining a certain distance from the stage 8.
[0036]
Next, when the operation switch 7A that appears due to the lateral displacement movement of the opening / closing lid 2 is pressed, a control signal for rotating the opening / closing lid 2 is transmitted to the motor 43 via a control circuit (not shown). The motor 43 is driven again, and the rotational angular displacement is again given to the prime mover 41. In particular, the motor 43 has a driving node protrusion 42 at a relay point M shown in FIG. ₁ To the end point M shown in FIG. ₂ It is driven until it reaches. That is, when the operation switch 7A is operated, the driving node 41 is connected to the relay point M by the motor 43. ₁ To end point M ₂ The rotational angular displacement until reaching the value is given. At this time, the protrusion 42 is engaged with the guide groove 50 of the bracket, and the end point M ₂ On the other hand, the swing arm 51 is kept stationary with the guide pin 52 engaged with the cam groove 53. In particular, the protrusion 42 presses the side wall of the guide groove 50 while moving in a circular orbit in the guide groove 50. For this reason, the bracket 49 is connected to the driving node 41 around the connecting portion 51B with the swing arm 51. It is swung in the opposite direction. As a result, the opening / closing lid 2 is rotated and the stage 8 is fully opened as shown in FIG.
[0037]
If the operation switch 7A is operated again in this state, the direction changing mechanism 40 rotates in such a manner as to reverse the operation described above to partially close the stage 8, and then if the operation switch 4 is operated, the opening / closing lid 2 is also operated. Moves sideways toward the front, and the stage 8 is fully closed.
[0038]
That is, by operating the operation switch 7A when the opening / closing lid 2 is fully opened, the motor 43 is rotated in reverse and the protrusion 42 of the driving node is moved to the end point M. ₂ To relay point M ₁ And then the projection 42 is moved to the relay point M by operating the operation switch 4. ₁ Starting point M ₀ The motor 43 is driven so as to move to. In this example as well, the control circuit can be configured such that the motor 43 is continuously driven until the opening / closing lid 2 is fully closed by operating the operation switch 4 when the opening / closing lid 2 is fully opened.
[0039]
Although the present invention has been described above by taking a disc player as an example, the present invention can also be applied to a tape recorder, a video deck, and the like. Here, the stage is provided with a pinch roller and a magnetic head instead of a turntable as a driving body.
[0040]
【The invention's effect】
As is apparent from the above description, according to the present invention, since the operation switch group can be shielded by the opening / closing lid, the operation switch group is not erroneously operated when not in use, and the appearance is also impaired. Absent.
[0041]
In addition, major operations such as music selection and volume adjustment can be performed while the information recording medium is shielded, so that dust adhering to the information recording medium and the inside of the apparatus can be reduced as much as possible. Since the opening / closing lid is fully opened by the rotational movement, it is not necessary to secure a large operating area of the opening / closing lid in the housing, and thus the apparatus can be easily reduced in size and weight.
[0042]
Furthermore, since the direction changing mechanism for causing the lateral movement and the rotational movement of the opening / closing lid is actuated by one power source, it can be reduced in size and installed without taking up space.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a disc player shown as a preferred example of the present invention.
FIG. 2 is a schematic perspective view showing a state in which the opening / closing lid is partially opened in the apparatus.
FIG. 3 is a schematic perspective view showing a state in which the opening / closing lid is fully opened in the apparatus.
FIG. 4 is a front view partially broken away showing a direction changing mechanism for opening and closing the opening / closing lid in both directions;
FIG. 5 is a plan view showing another part of the mechanism in a broken view.
FIG. 6 is a schematic side view showing the initial state of the mechanism (when the lid is fully closed).
FIG. 7 is a schematic side view showing a state in which the opening / closing lid is moving laterally by the mechanism.
FIG. 8 is a schematic side view showing a state after the lateral displacement of the opening / closing lid by the same mechanism (when the lid is half-opened).
FIG. 9 is a schematic side view showing a state in which the opening / closing lid is being rotationally moved by the same mechanism;
FIG. 10 is a schematic side view showing a state in which the opening / closing lid is rotationally moved by the mechanism;
FIG. 11 is a schematic side view showing a state after the rotational movement of the opening / closing lid by the same mechanism (when the lid is fully opened);
FIG. 12 is a schematic side view showing an initial state of another direction changing mechanism (when the lid is fully closed).
FIG. 13 is a schematic side view showing a state after the lateral displacement of the opening / closing lid by the same mechanism (when the lid is half opened);
FIG. 14 is a schematic side view showing a state after the rotational movement of the opening / closing lid by the same mechanism (when the lid is fully opened);
[Explanation of symbols]
1 body
2 Open / close lid
4 First operation switch
6 Operation part
7 Operation switch group
7A Second operation switch
8 stages
9 Loading section
20, 40 Direction change mechanism
21, 41 prime mover
22 Followed clause
23, 51 Swing arm
24 Support arm
26, 43 Motor (power source)
49 Bracket

Claims (2)

An information recording medium drive apparatus comprising a drive body that attaches an opening / closing lid to a housing and uses a stage covered by the opening / closing lid as a stage to drive the information recording medium to the stage,
The opening / closing lid is attached to the housing via a direction changing mechanism that can be switched alternately between lateral movement along the stage and rotational movement around the axis along the edge of the opening / closing lid. While the stage is partially opened and closed by the movement, the stage is fully opened by the rotational movement and the information recording medium can be attached to and detached from the driving body.
In the direction changing mechanism, a projection provided at a part that is given a predetermined rotational angular displacement by a power source that operates it and is separated from the center of rotation is circular between the start point and the relay point and between the relay point and the end point. A driving node that moves while drawing a trajectory, a driven node that is swung by engaging with the projection when the projection of the driving node moves between the start point and the relay point, and the driven node The swinging arm that is swung in the opposite direction to move the open / close lid connected laterally and the part of the open / close lid and the drive node are connected, and the projection of the drive node moves between the relay point and the end point And a support arm for rotating the opening / closing lid about the connecting portion of the swing arm. An information recording medium drive apparatus comprising a drive body that attaches an opening / closing lid to a housing and uses a stage covered by the opening / closing lid as a stage to drive the information recording medium to the stage,
The opening / closing lid is attached to the housing via a direction changing mechanism that can be switched alternately between lateral movement along the stage and rotational movement around the axis along the edge of the opening / closing lid. While the stage is partially opened and closed by the movement, the stage is fully opened by the rotational movement and the information recording medium can be attached to and detached from the driving body.
The direction changing mechanism includes brackets fixed to both side edges of the opening / closing lid, and projections provided at a site separated from the rotation center by being given a predetermined rotational angular displacement by a power source that operates the direction changing mechanism. A moving node that moves in a circular orbit between the start point and the relay point and between the relay point and the end point, and when the projection of the driving node moves between the start point and the relay point, The swing arm includes a swing arm that moves the open / close lid laterally through a bracket that is connected while being swung, and the bracket moves the swing arm by the protrusion when the protrusion of the driving node moves between the relay point and the end point. A drive device for an information recording medium, wherein the opening / closing lid is rotationally moved while being swung around a connecting portion.

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