KR100384352B1 - Disk changer - Google Patents

Abstract

The present invention relates to a disc changer that can accommodate a plurality of disc-shaped recording media and that can be miniaturized.

The recording medium is arranged and stored in one direction so that one piece of the reproducing mechanism is required, the cassette is taken out, and a predetermined operation such as reproduction is performed on the data recorded therein. This reproducing mechanism is configured to move between the storage positions of the recording medium. The movement is based on a pair of plate cams capable of reciprocating movements installed inside the chassis of the apparatus and cam followers inserted in the cams of the plate cams installed on the regeneration mechanism.

The cam has a curved stepped shape, and as a result, the amount of movement in the horizontal direction of the regeneration mechanism is configured to be small. Therefore, the volume of the whole apparatus can be made small.

Description

Disk changer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc changer for a player for reproducing information recorded on a disc-type recording medium such as a laser disc, a compact disc, and more specifically, to select and extract and reproduce a desired disc individually. The present invention relates to an incremental moving mechanism for conveying a reproducing mechanism to an arbitrary stage of a disk which is stacked and stored in various stages.

As shown in FIG. 1, the movement of the conventional regeneration mechanism is a stepped shape provided in the straight guide groove 502 and the plate cam 503 provided in the chassis 501. As shown in FIG. Incremental movement of the regeneration mechanism 505 was performed by restraining and controlling the pin 506 which protruded from a part of the regeneration mechanism 505 into the groove 504. That is, by reciprocating the plate cam 503 in a right angle direction (the arrow X direction in the figure) with respect to the linear guide groove 502, the pin 506 is controlled by the step-shaped groove 504, the linear guide groove 502 Accordingly, the incremental movement is reciprocated between the upper limit position (U) and the lower limit position (D) of the linear guide groove 502. The position of the regeneration mechanism 505 'corresponds to the position of the plate cam 503' indicated by the dashed-dotted line in the figure. In this process, it stops for every horizontal part 507 of the stepped groove 504 orthogonal to the linear guide groove 502. As shown in FIG. Since the position of the horizontal portion 507 corresponds to the position of the stacked end of the disc, the regeneration mechanism 505 is fixed at that position, and the disc is extracted and reproduced from the magazine storage position by known means. A series of actions to return to

In addition, as a separate moving mechanism, as shown in Japanese Utility Model No. 實 開平 4-103347, that is, as shown in FIG. 2, a step-shaped groove is divided and divided into two plate cams 601 and 602 to link two plate cams together. There is a possibility that the same effect can be achieved as in the case of a fancam.

However, when the number of discs increases and the number of storage stages increases, the increase in the longitudinal direction of the plate cam is inevitably inevitable. In addition, according to any of the prior arts described above, the step-shaped grooves extend in the lateral direction of the drawing, so that the dimension of the transverse direction of the plate cam is also increased. For this reason, in particular, if the volume of the disc is large, it is impossible to cope with the volume limitation, such as a player for a vehicle. Accordingly, it is an object of the present invention to provide a small disk changing apparatus that can cope with a plurality of disks.

For this purpose, the present invention provides a storage means 18 having a plurality of storage positions 16 and capable of storing a disc-shaped recording medium in each storage position, and a predetermined one of the electrical storage means. Zigzag cam as a loading means 30 for selecting and loading the recording medium accommodated in the storage position of the storage device, and a moving means for moving the electrical loading means between the respective storage positions. (40a, 40b, 40c; 42a, 42b, 42c) are formed and the zigzag shape is installed on the pair of plates 36ab, 38ab and the electrical loading means freely and approximately parallel to the reciprocating motion. Pin follower cam followers 33, 34, 35 configured to be inserted into the cam of the plurality of electric plates, and the plurality of electric plates reciprocate at a predetermined timing, as a result of which the electrical loading means is electrically Direction and number Provides a disc changer is configured as a means of transportation (移動 手段) (85) to move in a direction.

In the disc changer of the present invention, when the first and second plates are reciprocated by the moving device, the disc selector coupled to the electric cam moves incrementally and reaches the required disc in a selectable position.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of this invention is described based on drawing. Hereinafter, the same code | symbol is used for the thing common in drawing. 3 is a schematic front view of the disc changer according to the present invention, wherein 10 is a body, 12 is a chassis, 14 is an operation panel, and 16 is a magazine storage shelf. . In the figure, the magazines 18 and 18 are accommodated and mounted in the lower two-stage magazine storage shelves 16 and 16, and the uppermost stage is the empty stage in which the magazines are not stored and mounted. 20 is a sliding door which opens and closes a magazine storage room, and is in the position which opened the magazine storage shelf 16 in the figure. 22 is an opening / closing handle of the sliding door 20, 24 is a monitoring window so that a confirmation indicator 26 of the selected disk position installed on the operation panel 14 can be viewed from the outside. 20) Install by drilling. In the drawing, there is shown that the apparatus according to (權構) is a magazine accommodating a magazine eject operation position the top of the self-16 (scale = E ₃₎ to the surface (指標) (S) of indicators (26). In this embodiment, for the sake of convenience, three magazines 18 capable of accommodating six discs 27 can be mounted, and a player that can operate on a total of eighteen discs is illustrated. Naturally, the number of disks that can be used is not limited to this.

The operation switches provided on the operation panel 14 are concealed by portions other than the sliding door 20 and are protected from misoperation due to unnecessary contact. 28 is an eject operation button, which corresponds to each magazine storage self, and the required magazine can be taken out by pressing any of these. The magazine is mounted by sufficiently pushing the magazine to the end in a predetermined self position and the magazine is automatically locked and locked in position in a well known manner at the end of the push. By operating the opening / closing handle 22 to open the sliding door 20 to complete the attachment and detachment operation of the magazine and closing the sliding door 20, the operation panel 14 is exposed on the right side of the drawing and the disk The reproducing operation of (27) becomes possible. In this exchanger, only the eject operation button 28 may be provided, and operation switches may not be provided on the panel indicated by the reference numeral 14. In this case, various commands such as disc replacement and reproducing of the exchange apparatus are made from a head unit (not shown) connected to the exchange apparatus.

4 is a plan view of a cross section taken along the line II-II of FIG. 3, where M is a magazine storage portion and P is a disk reproducing portion. 30 is a lift panel equipped with a disc selective playback device, in which three shift pins 33, 34, and 35 are integrally connected, and a first pan cam on the front operation panel 14 side. Zig-zag-shaped stepped cam grooves 40a and 42a installed on the 36a) and the second plate cam 38a, and the first plate cam 36b and the second plate cam 38b on the rear side, respectively, are installed in two places. It is supported by a zigzag stepped cam groove 40b, 40c, 42b, 42c and guided up and down by a straight guide groove 43 (FIG. 5) provided in the chassis 12.

The electric cam grooves 40a (FIG. 5), 40b, 40c, 42a (FIG. 5), 42b, 42c are horizontal areas (m) in the middle of the inclined portions, respectively. ₂ , m ₆ ...), and the inclined portion is inverted from side to side to form a zigzag shape.

The zigzag stepped cam grooves 40a, 40b, and 40c provided in the first plate cams 36a and 36b are all the same, and the stepped cam grooves 40b and 40c have the symmetrical shape of the stepped cam grooves 40a. It is arranged inverted to iii). The staggered cam grooves 42a, 42b and 42c provided in the second plate cams 38a and 38b have the same shape, and the stepped cam grooves 42b and 42c invert the staircase cam grooves 42a in the axisymmetric manner. I arranged it.

The planar figure of the magazine storage shelf 16 is almost the same shape as the magazine 18, and has an unshown coupling discharge mechanism which locks and ejects the magazine 18 to the storage position on the upper surface thereof. have. In addition, the magazine storage shelf 16 has a recess 46 having the same shape at the same position as the magazine 18, and the operation key of the disk eject lever 48 connected to the magazine 18. 50 passes through the vertical direction.

The operation key 50 is connected with an arm 52 to an unshown drive unit provided in the lift panel 30 and moves up and down together with the lift panel 30. The disc ejection lever 48 at the same height as the operation key 50 rotates counterclockwise by the operation of the operation key 50 protruding to the left indicated by the dashed two-dotted line in the fourth middle. Only the disc 27a which is present is pushed toward the disc reproducing unit P to the position indicated by the dashed-dotted line in the drawing and set in the disc reproducing unit P by known means. The operation key 50 is also installed in the electric coupling ejection mechanism in the same operation as that for the disc ejection lever 48 when the disc ejection lever 48 is set at any of the levels E ₁ , E ₂ , and E ₃ not involved. The magazine eject lever can be operated.

54a is a connecting port between the first plate cam 36a and the drive lever 56a, and the first plate cam 36a reciprocates by swinging the drive lever 56a. In order to reciprocate this, the first plate cam 36b on the rear side facing this is also provided with a coupling tool 54b that engages with the lever extending in the opposite side as an integral part of the drive lever 56a. On the other hand, 58a is a connecting port between the second plate cam 38a and the drive lever 60a, and the second plate cam 38a reciprocates by swinging the drive lever 60a. In order to reciprocate this, the second plate cam 38b on the rear side facing this is also provided with a connector 58b that engages with the lever extending integrally with the drive lever 60a and extending to the opposite side. The first plate cams 36a and 38b on the front side and the rear side are relatively moved at the same time by the rotation of the drive lever 56a, and the three shift pins 33, 34, 35 are formed by the stepped cam grooves 40a, 40b, and 40c. ) The same action is applied to all at the same time Similarly, in the second and second plate cams 38a and 38b on the front side and the rear side, the stepped cam grooves 42a, 42b and 42c are formed on all three shift pins 33, 34 and 35 by the rotation of the drive lever 60a. Simultaneously do the same.

76a and 76b (FIG. 5) are the linear guides which reciprocate the 1st pan cams 36a and 36b to the left and right, and 78a and 78b are the 2nd pan cams 38a and 38b. It slides in combination with stud pins (80, 82) fixed to the chassis as a linear guide for reciprocating in parallel. 62 is a pin formed by extending the shift pin 33 and having an end as an index S of the indicator 26, and is inserted into the long hole 64 of the indicator 26 made by drilling the operation panel 14, By looking at the position of the indicator S from the outside, the operator can confirm which lift stage 30 is located corresponding to the disk 27 of which storage end.

FIG. 5 is a front view of the first and second plate cams 36a and 38a shown along the line III-III of FIG. 4, wherein the staggered cam grooves 40a in the zigzag shape are connected to the first plate cam 36a and on the other hand. The zigzag staircase cam groove 42a is drilled by the second plate cam 38a. For convenience of explanation, the bent portion on the left of the zigzag stepped cam groove 40a in the first plate cam 36a is called a ridge, and the bent portion on the right is called a valley. Zigzag-shaped groove is composed of a step (66) moving only from the valley to the ridge, step 68 moving only from the ridge, step 70 moving from the ridge to the valley and step 72 moving only from the valley are composed of sequentially have. In the first embodiment, the second plate cam 38a has the same zigzag shape, but the inclined portion 74 of the stepped cam groove 42a corresponds to the continuous steps 68 and 72 of the first plate cam 36a. By installing and cooperating with the second plate cam 38a, the stepped cam grooves 42a of the second plate cam do not necessarily have to be stepped or zigzag-shaped.

Next, the incremental movement of the lift panel 30 will be described by representing the operation of the first plate cam 36a and the second plate cam 38a with respect to the shift pin 33. The other pins 34 and 35 are also made in the same manner by the step-shaped cam grooves 40b, 42b, 40c and 42c of the first and second plate cams 36b and 38b which are coupled thereto. Omit. Any pancam intermittently reciprocates zigzag ridges and valleys by the operation of electrically and / or mechanically controlled drive levers 56a, 60a.

First, it is assumed that the lift panel 30 is at the lower position m ₁ (the scale of the operating panel = 1: hereinafter scale = 1). Position where the first plate cam 36a (hereinafter referred to as cam 36a) is moved in the direction of arrow R while the second plate cam 38a (hereinafter referred to as cam 38a) is stopped to become half of a stroke. Stop at Bonding site with the cam groove (40a) of the shift pin 33 is still located on the grid = 2 shift pin 33, as m _2. When the cam 36a is moved in the direction of the arrow R to the stroke and the end, the engagement position with the cam groove 40a of the shift pin 33 reaches m ₃ , and the shift pin 33 is located at scale = 3. During this operation, the cam groove 42a of the cam 38a is in a position 75 that does not interfere at all.

Next, the cam 38a is moved in the direction of the arrow L while the cam 36a is stopped and stopped at a position that is half the stroke. Bonding site with the cam groove (40a) of the shift pin 33 stops at the position of the shift pin 33 has a scale = 4 m _4. If the cam 38a is further moved in the direction of the arrow L until the end of the stroke, the engagement position of the shift pin 33 with the cam groove 40a becomes m ₅ , and the shift pin 33 is located at scale = 5. This time, by stopping the cam 38a and stopping the cam 36a at a position that is half the stroke, the shift pin 33 is engaged with the cam groove 40a at m ₆ , so the shift pin 33 is positioned at scale = 6. Stop at Here, the cam 36a is further moved to the end of the stroke to engage the shift pin 33 at m ₇ of the cam groove 40a to position the shift pin 33 at graduation = E ₁ . Even during this operation, the cam groove 42a of the cam 38a is in a position 75 that does not interfere with the shift pin 33 at all. In this way, the shift pin 33 incrementally moves in the linear guide groove 43 in one direction. By reversing the above procedure, the shift pin 33 can be reversed.

Since the scales 1 to 6 correspond to the disk 27 storage ends of the lower magazine 18, the shift pin 33 is stopped at the required position and locked in the other way to the required disk ( A command is given from the operation panel 14 to the lift panel 30 which is at the same level as 27), and the operation key 50 of the disc ejection lever 48 is operated to remove the disc 27 from the storing position of the disc 27 by known means. It can be extracted, regenerated and returned to the stowed position after use.

Here, the cam 38a is moved in the direction of the arrow R while the cam 36a is stopped and stopped at a position that is half the stroke. Bonding site with the cam groove (40a) of the shift pin 33 is still located at the shift pin 33 has grid ₂ as m = E _8. Subsequently, when the cam 38a is moved in the direction of the arrow R to the end of the stroke, the engagement position with the cam groove 40a of the shift pin 33 becomes m _{9 and} is located at the scale = E ₃ of the shift pin 33. Positions m ₇ , m ₈ , and m ₉ corresponding to the scales E ₁ , E ₂ , and E ₃ have a disc free space due to the thickness of the magazine housing or magazine case. The installation so as to correspond to the two positions are the grid positions of the eject lever operable by an operation key (50) in (段位置) for accommodating ends of each magazine E _1, E _2, E _3, and operates the ejection of the magazine.

The above operation is for the disc of the magazine mounted at the bottom, but the lift panel 30 at each disc storage position by repeating the same operation for the cam 36a and the cam 36a for the disc of the magazine mounted at the top and the middle. ) Can achieve the purpose of matching. The three positions m ₁₆ , m ₁₇ , and m ₁₈ (scale = F, F, F) between the suspended magazine and the upper magazine are provided with an operation function member, for example, by an operation key 50 or the like. Since there is no dead space, there is no need to provide a step in the middle, and when the shift pin 33 is in this position, the cam 38a is controlled to move without stopping the entire stroke.

Next, another embodiment of the first and second fan cams will be described based on FIG. 6 (a). 6 shows an application example in which all of the disk storage ends are arranged at equal intervals as the second embodiment. The cam grooves 440a and 442a formed in the first and second plate cams 436a and 438a are zigzag but not formed in a staircase shape. As the first plate cam 436a moves to the left, the engagement position of the shift pin 33 with the zigzag cam groove 440a moves from m ₁ to m ₂ , and the _second plate cam 438a facing the right side is moved to the right. The first plate cam 436a, which is lifted up by the inclined portion of the cam groove 442a, is brought to m ₃ , and subsequently returns to the illustrated position, is moved to the right, and the engaged position is m ₄ . Subsequently, the return to the illustrated position of the second plate cam 438a brings the engagement position of the shift pin 33 to m ₆ . In this way, the shift pin 33 incrementally moves along the linear guide groove 43.

Or less by the operation repeated in pankaem (436a, 438a), the shift pin 33 is coupled position m _6, ..., ₁₇ m through the dadareunda at the top position of ₁₈ m. I.e., the stop position of the shift pin 33 corresponds to the disk 18 of the m _1, ..., m _18. It is the same as that of the first embodiment that the stop position corresponds to the storage end of the disc, the predetermined operation is performed on the disc required at the stop position, and the lifting and lowering operation can be freely at any position. As described above, according to the incremental movement mechanism, the plate cams 436a and 438a are subjected to a very small reciprocating motion, thereby dealing with 18 discs in the second embodiment.

In this way, the player can cope with mass storage of the disc without extending the length in the lateral direction. Further, by providing a horizontal component 442x in the direction orthogonal to the linear guide groove 43 at the end of the zigzag groove 442a, the displacement is continued to the plate cam 438a while the shift pin 33 is stopped at the end of the moving range. Since (iii) can be applied, it is possible to correspond this movement as an operation (for example, an eject lever operation) or an operation signal for another member.

6 (b) shows a third embodiment in which a straight portion 440y is formed by partially extending the interval of the head step of the zigzag cam groove 440b. Incremental movement of the shift pin 33 along the linear guide groove 43 by the two cam grooves 440b and 442b by alternately reciprocating the first and second plate cams 436b and 438b. Same as the second embodiment. Intervals of the steps between the shift stops 33 and the stop positions m ₁ to m ₆ , m ₇ to m _12, and m ₁₃ to m ₁₈ between the shift pin 33 and the zigzag cam groove 440b shown in FIG. All of them are the same and correspond to six disc storage spaces in each magazine. On the other hand from the rest position and m ₆ and m ₇ m ₁₂ and m ₁₃ is equivalent to the area where there is caused by the thickness of the disk storage case chena magazine in the magazine is wider interval.

6 (c) shows a cam groove 440c which divides the transition step between the mountain head and the valley of the zigzag shape 440c and sets the stop positions m ₂ , m ₃ , m ₈ , m ₁₁ , m ₁₄ , and m _{17 along the way} . ) Shows a fourth embodiment in which staples are formed in steps. A horizontal portion is provided in the corresponding portion of the stepped cam groove 440c which is temporarily stopped while the plate cam 436c is reciprocated. Otherwise, the incremental movement of the shift pin 33 into the linear guide groove 43 in cooperation with the second plate cam 442c may be the same as in the above-described embodiment. Other disc storage intervals and spaces separated by the storage shelves between the magazines are set as in the third embodiment. In addition, in the fourth embodiment, although the disk throughput is the same as in the second and third embodiments, the number of zigzag bends is small, and the stop signal is sent by detecting the middle of the plate cam stroke as in the first embodiment. Mechanisms are provided separately. In addition, the groove (e) protruding below the bottom position m ₁ is a mechanism in which another member, for example, an ejector lever or the like, is installed in the disk selective reproducing means, for example, below the lowest disk position. It is a moving position of the lift panel 30 for the purpose of operating with an operation key or the like.

The zigzag shape of the cam groove, the step spacing, the terminal shape of the cam groove, etc. are not limited to the above embodiments, but needless to say that they can be appropriately modified and applied according to the design ideas of various disc player players. . That is, the pair of cam grooves provided in the first and second plate cams are both zigzag stepped grooves in the first embodiment, while both are zigzag grooves in the second and third embodiments, and in the fourth embodiment, This zig-zag groove, the other one is a zigzag stair groove, but one of the pair of cam grooves may be zigzag, and the other is not zig-zag, but may be a simple inclined groove or stair groove.

In addition, the disk may be anything such as a compact disk (CD), a lazer disk (LD) or a cassette (for example, a mini disk (MD) or a floppy disk (FD)). In addition, although the disc is housed in a magazine, the present invention can also be applied to a system in which a disc is not stored in a magazine but directly stored in a disc device.

Next, the driving mechanism of the cams 36a and 38a will be described. FIG. 7 is a plan view showing an example of the drive unit 85 of the first and second plate cams shown in the cross section along the line VII-VII in FIG. 94a and 94b are gears of the same diameter, and are driven through the reduction gear train 89 by a driving motor 88 which is controlled and controlled, and forward, reverse or stop. 96a and 96b are attached to each of gears 94a and 94b as working pins. 56 and 60 are drive levers, and rotate freely about the respective axes 90 and 86. The shafts 86, 90 are also located symmetrically on the tangent to which the gears 94a, 94b are engaged and on both sides of the connecting line connecting the gear shafts 95a, 95b. The two drive levers 56 and 60 have the same shape and are disposed to face each other with the gears 94a and 94b facing each other. 87 and 91 are escape grooves formed in the drive levers 56 and 60, respectively, so as to prevent movement of the drive levers 56 and 60 from interfering with the shafts 86 and 90, respectively.

In addition, the cam levers 98a, 98b: 100a, 100b are drilled in the drive levers 56, 60, and the working pins 96a, 96b are fitted inwardly. Each cam hole is comprised in the shape in which the narrow long hole n part and the wide long hole part w are provided continuously. Each of the working pins 96a and 96b engages with the narrow long hole n portion, but is in a flow state in the wide long hole w portion. Hereinafter, in areas where the widths of the long holes are different, n or w are denoted by subscripts in the signs of the cam holes.

The drive levers 56 and 60 are coupled to the connector 54a and the connector 58a which are integrally installed with the second plate cam 38a and the first plate cam 36a on the front side of the pins 57a and 61a installed at one end. Thus, the first plate cam 36a and the second plate cam 38a are reciprocated separately. The second plate cam 38a and the first plate cam 36a on the rear side facing this are coupled to each of the pins 57b and 61b attached to the other ends of the drive levers 56 and 60 to reciprocate the same. The connector 54b and the connector 58b are integrally installed.

By the rotation of the drive lever 56, the first plate cams 36a, 36b on the front side and the rear side are moved relative to each other at the same time, and the three shift pins 33, 34, 35 are formed by the stepped cam grooves 40a, 40b, 40c. ) The same action is applied to all at the same time In addition, the second plate cams 38a and 38b move relative to each other simultaneously by the rotation of the drive lever 60, and similarly, the stepped cam grooves 42a, 42b and 42c in the second plate cams 38a and 38b on the front side and the rear side. The same action is applied to all three shift pins 33, 34, and 35 simultaneously.

55a, 55b, 59a, and 59b are arc grooves formed by drilling holes in the chassis 12, and the lower ends of the pins 57a, 57b, 61a, and 61b are inserted to guide the sliding motion and also the pins 57a. The movement of the drive levers 56 and 60 is stabilized by clamping the plate of the chassis with a flange having an enlarged diameter of the ends of the cylinders 57b, 61a, and 61b.

102 is a rotating disk which rotates integrally with the gear 94, and eight small holes 104, ..., 104 are provided at equal intervals along the circumference. 106 is an optoelectronic device, and generates a pulse of one pulse each time it encounters the small hole 104. The pulse is counted by means of an up-down counter or the like, and the drive member is controlled by comparing external inputs based on this data. That is, one rotation of the rotating disk 102 corresponds to eight pulses, and each pulse generating position represents a one-to-one correspondence with the phases of the two driving levers. The two driving levers can be stopped at a specific position by forward or reverse of the gear 94b to the position. As will be described later, each storage end interval of the disk 27 is provided in correspondence with the pitch between the small holes 104.

Next, the operation of the drive device 85 described above and the incremental movement of the lift panel 30 are represented by the operation of the first and second plate cams 36a and 38a with respect to the shift pin 33. A detailed description is given based on the figure. The stepped cam grooves 40b, 40b; 42c, 42c of the first and second plate cams 36b, 38b, which also engage with the other pins 34, 35, interlock with the operation of the drive levers 56, 60. This works the same, so description is omitted.

Now assume that the shift pin 33 for incremental movement of the disk selecting means in the stacking direction of the disk in FIG. 8 (a) is at the lowest position m ₁ , and the gear 94a is halved, for example. When rotated clockwise, the action pin 96b which rotates clockwise by the gear 94b engaged is in a flow state with the cam holes 98b and 100b and does not interfere with the movement of the drive lever at all. On the other hand, the working pin 96a cancels the engagement with the cam hole 98an and moves to the engagement with the cam hole 100an. For this reason, the drive lever 56 stops rotating, and the drive lever 60 starts rotating counterclockwise, and reaches the state of FIG. 8 (b). That is, since only the plate cam 36a moves to the right in the figure while the plate cam 38a is stopped, the shift pin 33 rises to the position m ₃ along the linear guide groove 43. In addition, as described above, when the coupling between the pin 96a and the cam hole 98an is released, the driving lever 56 stops rotating, but after that, the pin 96a is a curved portion of the cam hole 98aw. Since the pin 96b moves along the curved portion (circular arc provided on the 98bn side) of the cam hole 98bw, the drive lever 56 stops stably without being shaken while moving along (circular arc provided on the 98an side).

When rotation of the gears 94a and 94b proceeds in the state of FIG. 8 (b), since the action pin 96a moves to the cam hole 100aw area, the drive lever 60 stops rotating. In addition, as described above with respect to FIG. 8A, the pins 96a and 96b move to the curved portions of the cam holes 100aw and 100bw, respectively, so that the drive lever 60 stops stably.

Meanwhile, the other action pin 96b engages with the cam hole 98bn to rotate the drive lever 56 clockwise, and the plate cam 38a is moved to the position of FIG. 8 (c) while the plate cam 36a is stopped. As it moves, the shift pin 33 rises to the position m ₆ . At this time, since the working pin 96a is in a flow state in the cam hole 98aw, it does not interfere with the movement of the drive lever 56.

If the rotation of the gears 94a and 94b further proceeds in the state of FIG. 8 (c), the action pin 96b is released from engagement with the cam hole 98bn and engages with the cam hole 100b. 60 is rotated clockwise to the state of FIG. 8 (d), and the plate cam 36a moves to the left in the drawing, so the shift pin 33 reaches the position m ₇ along the straight guide groove 43. As the rotation of the gears 94a and 94b proceeds further, the actuating pin 96b is released and the actuating lever 56 is counterclockwise because the acting pin 96a is engaged with the cam hole 98an. rotation and a state in which the stop pankaem (36a) because the movement pankaem (38a) to the right, shift pin 33 is raised within a straight guide groove 43 to the position ₉ m. With the above process (one-turn process of the gears 94a and 94b) as one cycle, the relative positions of the drive levers 56 and 60 and the plate cams 36a and 38a are returned to Fig. 8A. For this reason, the movement of the drive lever is reversed continuously every quarter of a turn.

However, since the pulse of the rotating disk 102 is generated every 1/8 rotation and the pulse generating position and the stop signal of the driving device are synchronized, each of the driving levers 56 and 60 is equal to the middle of the full amplitude. You can stop. That is, by continuously rotating the gear 94a, for example, counterclockwise, the drive levers 56 and 60 repeat the above process, and the shift pin 33 moves from the lowest position m ₁ to the highest position m ₂₄ (FIG. 5). Continue up the incremental movement until. In addition, by shifting the gear 94a clockwise, the shift pin 33 can be moved downward at any time. Since the shift pin 33 is integrally connected directly to the disc selection and reproducing means, the position of the disc required by stopping the rotation of the gear at any time at a predetermined position by matching the position mx (x = 1 to 24) with the disc housing end The disk selection and playback means can be moved reliably until.

Moreover, the movement form of the lift panel 30 is demonstrated using FIG. First, the lift panel 30 is assumed to be at the lower position m ₁ (scale = 1 of the indicator 26, hereinafter referred to as scale = 1). The second plate cam 38a (hereinafter referred to as cam) when the gear 94b rotates at one pulse interval (1/8 rotation) and the next small hole 104 coincides with the photoelectric element 106 to generate the next pulse. The first pin cam 36a (hereinafter referred to as the cam 36a) moves in the direction of the arrow R while the stop plate 38a is stopped, and the shift pin 33 is moved to the position of step 66. Enter the horizontal area and stop the climb. Bonding site with the cam groove (40a) of the time shift pin 33 is located at the grid = 2 as m _2. In the next 1/8 rotation of the gear 94b, the cam 36a moves in the direction of the arrow R to the end of the stroke so that the engagement position with the cam groove 40a of the shift pin 33 reaches m ₃ and the shift pin 33 is Located at scale = 3. In the rotary disk 102, the next small hole 104 coincides with the photoelectric element 106, and one pulse is calculated. During this operation, the cam groove 42a is in a position 75 that does not interfere with the movement of the shift pin 33 at all.

In the next rotation of the gear 94b, the cam pin 38a moves in the direction of the arrow L while the cam 36a is stopped and the shift pin 33 moves the cam groove in the horizontal portion of the cam groove 42a at the position where it is half the stroke. It is located on the scale = 4 at the coupling position m ₄ with (40a). Subsequently, at 1/8 rotation of the next gear 94a, the cam 38a moves in the direction of the arrow L until the end of the stroke, and the engagement position of the shift pin 33 with the cam groove 40a becomes m ₅ , and the shift pin 33 ) Is located on the scale = 5 so that the small hole 104 generates the next pulse. With the subsequent 1/8 rotation of the gear 94b, this time the cam 38a stops and the cam 36a is half the stroke, the shift pin 33 is the horizontal portion of the step 70 of the cam groove 40a. Combined with position m _{6 of} , the scale = 6. Here, the gear 94b is rotated 1/8 to move the cam 36a to the end of the stroke, and the shift pin 33 is engaged at the position m ₇ of the cam groove 40a to set the scale = E ₁ . Even during this operation, the cam groove 42a of the cam 38a is in a position 75 that does not interfere at all.

In this way, the shift pin 33 incrementally moves in the linear guide groove 43 in one direction. By shifting the above procedure, the shift pin 33 can be reversed. The scales = 1 to 6 correspond to the disk 27 receiving end of the lower magazine 18, so that the shift pin 33 is stopped at the required position and locked in the other way to the required disk ( A command is given from the operation panel 14 to the lift panel 30 which is at the same level as 27), and the operation key 50 of the disc ejection lever 48 is operated to remove the disc 27 from the storing position of the disc 27 by known means. It can be extracted, regenerated and returned to the stowed position after use.

In the same manner, the cam 36a is first stopped by the operation of rotating the gear 94b in one direction of 1/8 rotation, and the cam 38a is half-stroked in the direction of the arrow R to cam cam 42a in the horizontal portion of the cam groove 42a. The pulse is generated by the small hole 104 of the rotary disk 102 when the shift pin 33 is located at the scale = E ₂ at the engagement position m ₈ with the 40a. Subsequently, the cam 38a moves in the direction of the arrow R to the end of the stroke so that the engagement position with the cam groove 40a of the shift pin 33 becomes m _{9 and} is located on the scale = E ₃ , and the small size of the rotating disk 102 is maintained. Pulses by the holes 104 are generated.

In addition, the above-mentioned driving mechanism rotates when controlling the plate cams 36a and 38a having the cam grooves 40a and 42a as shown in FIG. 5 and controlling the plate cams having the cam grooves as shown in FIGS. 6A to 6C. What is necessary is just to form the pitch of the small hole 104 provided in the disk 102 corresponding to the stop position of each plate cam.

As described above, the disc changer of the present invention has a staggered cam groove for increasing the disc selection means in a zigzag shape, so that the operation stroke of the plate cam with the stepped cam groove is reduced to increase the number of magazines. Even if the number of disks increases, the size of the device can be sufficiently coped with.

In addition, since the disk selection means can be seen directly from the outside of the device, the intermediate signal transmission member can be omitted, thereby eliminating the problems caused by them and additional space accompanying the increase in the number of disks. And since there is no increase in cost, the economic effect is great.

1 is a front view of a fan cam according to a conventional embodiment,

2 is a front view of a plate cam according to another conventional example,

3 is a front view schematically showing a first embodiment of the disc changer of the present invention;

4 is a plan view of the section II-II of FIG. 3,

5 is a front view of the plate cam of the first embodiment of the III-III line of FIG. 4,

6A is a front view showing the second embodiment of the plate cam of the disc changer of the present invention;

6B is a front view showing the third embodiment of the plate cam of the disc changer of the present invention;

6 (C) is a front view showing a fourth embodiment of the plate cam of the disc changer of the present invention;

7 is a plan view of an example of a drive system used in the present invention shown along the line VII-VII of FIG. 3,

8 is an explanatory view of a driving state of the plate cam by the driving apparatus of FIG.

Explanation of symbols on the main parts of the drawings

10 body 12 chassis

16: magazine housing shelf

18: magazine 26: indicator

27: disk

28: eject operation button

30: lift panel 33, 34, 35: shift pin

36a, 36b: 1st cam cam 38a, 38b: 2nd cam cam

40a, 40b, 40c: stair cam groove

Claims (14)

Storage means (18) having a plurality of storage positions (16), each storing position capable of storing a disc-shaped recording medium; Loading means (30) for selecting and loading the recording medium stored therein at a necessary storage position among the electrical storage means; Zig-zag cams 40a, 40b, 40c; 42a, 42b, 42c are formed as moving means for moving the electrical loading means between the respective electrical storage positions, and the reciprocating motion is free and rough. Several pairs of plates 36a, 36b; 38a, 38b arranged in parallel, A pin shaped cam follower 33, 34, 35 mounted to the electrical loading means and configured to be inserted into the electrical zigzag cam; Moving means 85 for reciprocating the plurality of plates reciprocally with a predetermined dimming and, as a result, moving the electrical loading means in a direction perpendicular to the direction of movement of the plurality of plates. Disk changer. The method of claim 1, The pair of electric plates (pair) is a disk changer, characterized in that two. The method of claim 1, And the direction of movement of the electric plate is a horizontal direction. The method of claim 1, The electric transfer means 85 is a link mechanism 89, 55, 60, 57ab, 61ab, 54ab, 58ab connecting the rotary drive device 88 with the electric rotary drive device and the plurality of plates 36a, 38a. Disc change device, characterized in that made. The method of claim 1, A disc change device, wherein the arrangement intervals of the electrical storage positions are equal intervals. The method of claim 1, And a discriminating means (26) for identifying a position in the direction of movement of the electrical loading means. Storage means (18) having a plurality of storage positions (16) arranged in the vertical direction, each storing position capable of storing a disc-shaped recording medium; Loading means 30 for loading a recording medium stored at a necessary storage position of the electrical storage means and performing a predetermined operation on the data recorded thereon; Zig-zag cams 40a, 40b, 40c; 42a, 42b, 42c are formed as a moving means for moving the electrical loading means between the respective electrical storage positions, and the reciprocating motion is free and approximately parallel. Two plates 36a and 38a disposed as A pin shaped cam follower 33, 34, 35 mounted to the electrical loading means and configured to be inserted into the electrical zigzag cam; Moving means (85) for reciprocating the plurality of plates at a predetermined timing to move the electric loading means in a direction perpendicular to the moving direction of the plurality of plates; Identification means 26 for identifying a position in the direction of movement of the electrical loading means Disk changer. The method of claim 7, wherein Rotary drive source 88, A coupling member 94ab having a coupling portion 96ab and pivotally supported to be rotatable, Two drive levers 56 and 60 having cams 98ab and 100ab which are supported to swing and which are coupled to the electrical coupling portion 96ab. And a drive device for driving the two plates having a cam groove. The method of claim 8, The electric drive lever is installed to be rotatable independently around each other axis of rotation, The electrical coupling member is composed of two gears which rotate in engagement with each other with a rotating shaft in a position different from the electrical shaft, The electrical coupling is a pin installed on each of these gears, Electric cam combines two long holes of different widths Disc change device characterized in that. Storage means for storing a plurality of disc-shaped recording media at each stage; Means for loading and unloading the disc-shaped recording medium in each stage; At least one pair of cams installed for reciprocating movement, each cam having a cam path, and optionally overlapping with other cam paths, A cam follower means engaged with each cam path of the cam, operating in connection with the loading and unloading means and repeatedly changing direction as it extends past the cam, The cam follower means moves the loading and unloading means in a vertical direction to the cam direction of movement and causes the recording medium to be stored at a predetermined position along this vertical direction, thereby reciprocating the cam so that the cam overlaps. As a vehicle to gradually increase and continue to reduce overlap Configured disk changer. The method of claim 10, The moving means includes a guide groove in contact with a cam follower providing a vertical direction. The method of claim 10, The electric vehicle includes a drive source and a pair of drive cams, the drive cams are operated by being connected to a drive source and alternately connected to a pair of cams, and a pair of interconnected drive cams are interconnected in two different directions. A disc changer, characterized in that the cam path of one cam gradually follows the cam follower, and the cam path of another cam continues the progressive progression of the cam follower. The method of claim 10, Each of the cam paths is a zigzag disc changer. The method of claim 10, Wherein each cam has a central zig-zag cam path and is a plate extending approximately from one side of the plate to the other.