JPH0439757B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a disk player for playing back a disk (disc-shaped recording medium), such as a digital audio disk.

BACKGROUND TECHNOLOGY AND PROBLEMS This type of disk player uses a box type, door type, pull-out type, etc. as the disk loading method. This requires opening or pulling out the part, which is cumbersome to operate, and requires a large space on the operating surface side.

Therefore, simply reducing the size of this disk player to be mounted on a car or the like will require time and effort to load and unload the disk, and the condition that it can be easily handled while driving will not be met. Since it requires space on the surface side, there is an inconvenience that the mounting position is limited.

OBJECTS OF THE INVENTION In view of the above, it is an object of the present invention to provide a disk player in which a disk can be loaded by a slot-in method, thereby improving the operability of loading and unloading and reducing the space on the operation surface side.

SUMMARY OF THE INVENTION The present invention is a disk player that rotatably supports an opening/closing lid provided in an insertion opening of a disk and is equipped with a lock mechanism and an opening/closing control mechanism for locking the opening/closing of the opening/closing lid. is equipped with a switch that is controlled by the rotation of the opening/closing lid at the initial stage of insertion of the disk, and a plunger that is operated by the operation of this switch, and the operation of this plunger causes the locking member to slide and release the locked state by the locking member. The lid opening/closing lever is rotated by the action of the plunger to open the lid, making loading and unloading of disks easy and smooth, and preventing dust from entering through the insertion opening. This is what I did.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 10 show a disc player according to the present invention, which is mounted, for example, in a car or the like to play a digital audio disc.

In the figure, reference numeral 1 indicates the entire disc player, in which a disc D is loaded by slot-in method, and an insertion slot frame 2 fitted into the insertion opening of the disc expands vertically to be larger than the height of a disc storage case, which will be described later. It has an inner opening 3 having an elliptical or polygonal shape, and the inner peripheral surface thereof is formed in a tapered shape that narrows inward, and the left and right inner surfaces 3a and 3b are tapered with a larger inclination angle than the upper and lower inner surfaces 3c and 3d. The width of the opening at the rear is narrower than the width of the disk storage case, and the lower edge of the front side of the insertion slot frame 2 protrudes from the upper edge so that both edges are continuous. Both side edges are formed in an inclined shape so as to function as a disk D insertion guide and erroneous insertion prevention section 4.

An opening/closing lid device 5 is provided on the rear side of the insertion slot frame 2, and this device 5 is composed of an opening/closing lid 6, a locking mechanism 7 for locking and controlling the opening/closing of the opening/closing lid 6, and an opening/closing control mechanism 8. has been done. The opening/closing lid 6 has an upper edge supported rotatably on a shaft 6 horizontally suspended above the rear part of the insertion slot frame 3, and a lock constructed from related members on the lower edge of the opening/closing lid 6. A mechanism 7 and an opening/closing control mechanism 8 are installed.

Next, the construction of the lock mechanism 7 and the opening/closing control mechanism 8 will be explained in detail with reference to FIGS. 4 to 9.

On the front side of the substrate 11 fixed to the chassis 10, the upper edge end surface is formed in a concave shape, and on the front side of the upper edge, there is an engaging stepped part 12a with which the lower edge of the opening/closing lid 6 is engaged in the rearward direction. A formed lock plate 12 is disposed, and engaging pieces 13, 13' are bent horizontally rearward on both sides of the lower edge of this lock plate 12. Rectangular holes 13a, 13a' are formed across the bent portions of the board 11, and are engaged with protrusions 14, 14' provided downwardly on the substrate 11. Further, a locking piece 15 is formed approximately at the center of the upper part of the locking plate 12 and extends backward by bending. It is inserted into a window hole 17 formed in the upper center of the substrate 11, and the through holes 16, 16' are engaged with receiving pins 18, 18' protruding from the front surface of the substrate 11.
And a through hole 13 bored in the engaging pieces 13, 13'
Tension coil springs 19, 19' are stretched between the holes 11b, 11b' formed in the bent portion 11a of the upper edge of the board 11, and the lock plate 12 is attached to the board 11. The engagement between the locking piece 15, the window hole 17, the through holes 16, 16', and the receiving pins 18, 18' is shifted slightly forward using the engagement portion on the lower edge as a fulcrum. Maintain tilting bias.

Further, on the upper surface side of the engaging pieces 13, 13' of the lock plate 12, levers 21, 21' are symmetrically supported by shaft pins 20, 20' on the rear surface of the board 11 so as to be able to swing vertically. The free ends 21a, 21a' are in contact with each other, and engagement pins 22, 22' are pivotally attached to the intermediate parts of the levers 21, 21'. It slides into contact with the lower edge of the operation plate 23 arranged on the side.

The operation plate 23 has horizontal long holes 23 on both left and right sides.
a, 23a' are formed and are laterally slidably engaged with rotors 24, 24' which are pivoted on the rear surface of the base plate 11, and engage pins 22, 23a' of the swing levers 21, 21'. Protrusions 23c, 23c' are provided in a protruding manner on the lower edges 23b, 23b' corresponding to 22', respectively. This operation plate 23 is connected to a plunger 25 and is slid by the operation of the plunger 25, so that the protrusion 2
3c, 23c' press the engagement pins 22, 22' of the swing levers 21, 21' so as to ride on them, thereby swinging the levers 21, 21' downward.

Further, an intermediate bent part 11a' is formed on the substrate 11 at the lower side of one side of the upper edge bent part 11a, and a shaft pin 11c is planted in this, and the tip of the shaft pin 11c is A substantially L-shaped lid opening lever 27 with a lid opening shaft 26 erected thereon is rotatably supported by the lid opening shaft 26 located on the front side of the opening/closing lid 6. The lid opening shaft 26 is brought into contact with the push piece 23d formed on the operating plate 23 by the contact piece 27a bent to abut against the pushing piece 23d formed on the operating plate 23, and rotated backward by the sliding operation of the operating plate 23, as will be described later. The opening/closing lid 6 is pushed open upward, and an opening/closing control mechanism 8 is configured. Furthermore, each operation volume V ₁ , V ₂ , V ₃ is attached to the board 11 .

A disk loading mechanism 28 is disposed behind or inwardly of the opening/closing lid 6, which is locked and opened/closed by the locking mechanism 7 and opening/closing control mechanism 8 configured as described above. The disk clamp arm (not shown) is moved onto the disk table (not shown).
It will be held under pressure.

An electric circuit for operating the lock mechanism 7, opening/closing control mechanism 8, loading mechanism 28, disk clamp arm, etc. described above is constructed as shown in FIG. 10, for example. That is, an operation switch _S1 of the plunger 25 that operates the lock mechanism 7 and opening/closing control mechanism 8 when the disk D is inserted is mounted on the front surface of the board 11, and this switch _S1 has a leave switch Sl and a relay switch Sr connected in parallel. The operation piece of the leaf switch Sl is connected to the lock plate 1.
It corresponds to 2. A switch S ₂ for detecting the operation of the disk loading mechanism 28 and a switch S ₃ for detecting the clamp state of the disk D with respect to the disk table are connected in series with the plunger 25, and the switching contact of the clamp state detection switch S ₃ is connected in series with the plunger 25. An alarm circuit 29, such as an alarm lamp circuit or a buzzer circuit, is connected to. Further, an ejection switch _S4 is connected to the circuit of the plunger 24 via a switch _S5 which is turned off when horizontal unloading of the disk D is completed.

In addition, 30 in FIG. 1 and FIG. 2 is an operating member.

Next, a disk storage container for storing disks to be loaded into a disk player according to the present invention will be explained with reference to FIG.

The disk storage container is composed of a disk storage case (hereinafter referred to as storage case) 31 and a lid 32.
The storage case 31 is large enough to store the disk D up to approximately half its circumference, and the lid 32 is large enough to cover the portion of the disk D protruding from the storage case 31 and to be fitted into approximately the front half of the storage case 31. .

That is, the storage case 31 is constructed by fitting and fixing the rear half of an inner case 31a, which has elasticity and is open in the front-rear direction, into an outer case 31b whose rear face is closed, and the lid 32 is fitted into the front half of the inner case 31a. will be combined. At least a center hole d of the disk D is provided on the bottom side of the front half of the inner case 31a in the depth direction from the front edge thereof.
A notch recess 33 is formed in which the disc D is exposed, and a locking piece 3 is formed approximately at the center of the upper surface side to be locked in the center hole d of the disc D in the direction in which the disc D comes out.
4 is formed with a notch, and on both sides sandwiching this locking piece 34, a holding piece 3 of the disk D that is elastically biased inward is provided.
5, 35', engaging recesses 36, 36' of the lid 32, and engaging protrusions 37, 37' that are engaged with the insertion slot frame 2 of the player 1 described above are formed. An erroneous insertion prevention portion 38 is formed at the mouth edge in correspondence with the shape of the front peripheral surface of the insertion port frame 2 .
A step 39 is formed at the edge of the lid 32 to correspond to the edge of the outer case 31b.

Next, the loading and unloading operations of the disc stored in the storage case into the disc player configured as described above will be explained.

First, the lid 32 is removed from the disc storage case 31, and when the disc D is inserted into the insertion slot frame 2 of the opening of the player 1 with a part of the disc D, in this example, approximately half its circumference exposed, its tip end is exposed to the opening/closing lid device 5. It hits the opening/closing lid 6 and presses it inward. For this reason, the opening/closing lid 6 is rotated a little using the shaft 6 at the upper edge as a fulcrum, and as a result of this rotation, the locking plate 12 of the locking mechanism 8 engaged with the opening/closing lid 6 locks onto the base plate. It is swung to the 11 side. This lock plate 1
Due to the rocking of switch 2, the leaf switch Sl of switch _S1 is turned on, the plunger 25 operates, and the operation plate 23
is slid, and the protrusions 2 of the lower edges 23b, 23b'
3c and 23c' respectively swing the levers 21 and 21' downward. The engagement pins 22, 22' of both levers 21, 21' are pressed so as to ride up, and the rocking of these levers 21, 21' causes the lock plate 12 to move through the engagement pieces 13, 13' at the lower edge. is pushed downward against the biasing force of the coil springs 19, 19', and the engagement with the opening/closing lid 6 is released, and the opening/closing lid 6 is released.
is allowed to rotate for opening and closing (see Figure 5).
As the operation plate 23 is further slid by the subsequent stroke of the plunger 25, the push piece 23d
presses the contact piece 27a of the lid opening lever 27, rotates the lid opening lever 27, and the lid opening shaft 26 implanted at the tip pushes the opening/closing lid 6 from the front side and rotates it upward (the second 6), the insertion opening, that is, the inner opening 3 of the insertion slot frame 2, is opened, and the disk D can be inserted into the player 1 through the inner opening 3 of the insertion slot frame 2, as shown in FIG. becomes.

In this state, the lock plate 12 cannot be pushed down because the protrusions 23c and 23c' of the operation plate 23 are separated from the engagement pins 22 and 22' of the levers 21 and 21', and the levers 21 and 21' are not swung. The leaf switch Sl of the switch _S1 is turned off because it is released and raised by the biasing force of the springs 19 and 19' and is returned to swing forward, but the relay switch Sr connected in parallel with it remains on. Then, the plunger 25 operates and the opening/closing lid 6 is held in an open state.

Then, the disk D inserted from the insertion slot frame 2
When the disk D is supported by the disk loading mechanism 28, the loading mechanism 28 operates and the disk D is pulled out from the case 31 and moved horizontally. At this time, the mouth edge of the case 31, that is, the inner case 31a, is pushed from both sides along the slopes of the left and right inner surfaces 3a and 3b of the inner port 3 when the insertion port frame 2 is inserted, so that the upper and lower surfaces of the case 31 are Upper and lower inner surfaces 3 of inner opening 3
The engagement of the locking piece 34 with the center hole d of the bulging disk D corresponding to the shapes of c and 3d is released, and the upper and lower surfaces are raised as a whole, allowing the disk D to be easily extracted.

In this way, disk D is moved horizontally, and when this movement is completed, this is detected by switch _S2 ,
This switch _S2 turns off the circuit of the plunger 25, turning the plunger 25 into a non-operating state for the first time, and lowering the disk D to place it on the disk table. At this time, the operation plate 23 returns to its original position by switching the plunger 25 to its non-operating state, and in order to release the pressing operation of the lid opening lever 27, the opening/closing lid 6 rotates in the closing direction, that is, downward, as the operation plate 23 returns to its original position. The edge will come into contact with the rear side of the upper edge of the lock plate 12 which has already been raised and returned, but upon returning, the operation plate 23 will again move the levers 21, 21' to the protrusions 23c, 23c on the lower edge. ' engage pins 22, 22'
Lock plate 1 to be pressed and swung downward through
2 is lowered, and the opening/closing lid 6 is rotated to the front side beyond the lock plate 12. In this state, the lock plate 12 is locked so that the protrusions 23b, 23b' of the operation plate 23 are connected to the levers 21, 2.
By passing through the engagement pins 22, 22' of 1', the push-down is released and the lid rises again, and the engagement step 12a on the upper edge engages with the lower edge of the opening/closing lid 6 and locks it. .

On the other hand, the disk D placed on the disk table is pressed and held by a disk clamp provided on a disk clamp arm. By holding this pressure, the switch _S2 is switched to the alarm circuit 29 side, and the alarm means lamp or buzzer is operated to prevent the disk D from being loaded twice. At this time, the switch
Since S ₂ and S ₃ are in the OFF state, even if the opening/closing lid 6 is pressed and the locking plate 12 is swung to turn on the switch S ₁ , the plunger 25 will not be operated and therefore the locking plate 12 will not operate the opening/closing lid 6. is held in a locked state.

The above operation performs a performance on disc D, and when the disc D is ejected from the player after the performance is finished, the eject switch S ₄ is activated.
is turned on, the plunger 25 is operated, and the opening/closing lid 6 is opened in the same manner as described above.

In this state, the disk D is lifted from the disk table and moved toward the opening of the player 1 by the disk loading mechanism 28, that is, unloaded and inserted into the inner opening 3 of the insertion slot frame 2 from the inside. If the inner case 31a of the storage case 31 is inserted into the insertion slot frame 2, the disk D will be inserted into the storage case 31, and when the unloading is completed in this way, the unloading completion detection switch is activated. _S5 is turned off and the plunger 25 becomes inactive, so the opening/closing lid 6 is closed.

Furthermore, even if the rear end of the disk D is pinched between the opening/closing lid 6 and the lock plate 12 due to a timing lag in the closing operation, the opening/closing lid 6 will only come into contact with the disk D due to its own weight, and the lock will be closed. Since the upper edge end surface of the plate 12 has a concave curved shape, it only comes into contact with the peripheral edge of the disk D and does not damage the disk recording surface.

In this example, the disk D is loaded into the player 1 with approximately half its circumference stored in the storage case 31, but it is of course possible to take out the disk D from the storage case 31 and load it.
In this case, since the upper and lower inner surfaces of the inner opening 3 of the insertion port frame 2 have a shape that bulges upward and downward, the disk D only has its peripheral edge slidingly in contact with the insertion port frame 2, and the recording surface of the disk is not damaged.

Application Examples The present invention can be applied not only to disc players mounted on vehicles, but also to portable disc players for home use, recording and reproducing devices for disc-shaped magnetic recording media, and the like.

Effects of the Invention As described above, according to the present invention, the opening/closing lid rotatably supported by the disc insertion opening of the disc player is locked in the closed state by the locking mechanism and the opening/closing control mechanism, and also when loading the disc. The structure is such that the lock is released and the lid is opened with the insertion operation, and the lid is closed and locked with the ejection operation.
Loading and ejecting discs from the player can be carried out extremely easily with just one hand holding the disc, and the disc insertion opening is closed and locked by the opening/closing lid except when loading or unloading the disc, making it possible to double insert discs. This prevents the unnecessary insertion of fingers, etc., and also prevents the intrusion of dust, making it possible to extend the life of the internal mechanism of the player, especially when handling it as a disk player installed in a car, etc. It is also extremely effective from a functional point of view.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of an example of a disk player according to the present invention, FIG. 2 is an enlarged sectional perspective view of the main parts,
FIG. 3 is an enlarged longitudinal sectional side view of the main parts with the disk inserted, FIGS. 4 to 6 are rear views showing the operating state of the lock and opening/closing control mechanism of an example of the present invention, and FIG. 7 is the same. Plan view, Figure 8 is the same side view,
FIG. 9 is an exploded perspective view of the same, FIG. 10 is a connection diagram of the same operating circuit, and FIG. 11 is a perspective view of an example storage container housing a disk to be loaded into the disk player of the present invention with the lid removed. . In the figure, 1 is the player body, 2 is the insertion slot frame, and 3
is an inner opening, 5 is an opening/closing lid device, 6 is an opening/closing lid, 7 is a lock mechanism, 8 is an opening/closing control mechanism, 11 is a board, 12 is a lock plate, 22, 22' are levers, 23 is an operation plate,
25 is a plunger, 26 is a lid opening shaft, 27 is a lid opening lever, S ₁ is an operation switch, S ₂ and S ₃ are detection switches, and S ₄ is an ejection switch.

Claims (1)

[Claims] 1. A disk player equipped with a lock mechanism and an opening/closing control mechanism that rotatably supports an opening/closing lid provided at an insertion opening of a disk and locking the opening/closing of the opening/closing lid, and the locking mechanism A lock member that is slightly rotated by the initial rotation of the opening/closing lid, a switch that is controlled by the lock member, and a plunger that is operated by the operation of the switch, and the lock member is slid by the operation of the plunger, A disk player characterized in that the locked state by the locking member is released, and in this state, the lid opening/closing lever constituting the opening/closing control mechanism is rotated by the operation of the plunger to open the lid.