KR0158842B1 - A disk moving device of compact disk player having a tray - Google Patents

Abstract

The present invention relates to a CD drive of a CD drive having a tray having a structure capable of holding and floating the chassis assembly in accordance with the transfer of the tray, the object of the disc loading of the CD CD tray without using a loading roller By using the gear to operate the guide member for holding and floating the chassis assembly while loading the disc by using a gear of the CD having a tray which can reliably prevent the mechanical malfunction caused by the unbalance operation of the guide member. It is to provide a disk drive device, the configuration comprises: an upper plate portion of the main chassis having a plurality of guide fixing pieces integrally; Trays each having front and rear lengths formed at both ends of the lower surface thereof; A chassis assembly having a plurality of support protrusions and a plurality of fixing protrusions; An actuating lever installed to be movable back and forth by the guide fixing piece; A plurality of oil dampers attached to and fixed to a predetermined bottom surface of the main chassis; A plurality of gear shaft support punches and a plurality of shaft support pieces which are formed at predetermined positions on both bottom surfaces of the main chassis; A main gear portion rotatably supported by the gear shaft support piece, respectively; A plurality of idler gears; Working shaft; Sidewall portions of the main chassis mounted vertically on both sides of the main chassis; First and second rotating members; First and second guide plates; A loading motor for driving the working shaft; Characterized in that the transmission gears.

Description

Cassidy's Disc Drive with Tray

1 is a plan view showing an installation state of a conventional operation member.

Figure 2 a and b is a perspective view showing a conventional guide member.

3 a and b are front views showing side portions.

4 is a front view showing the CD player deck of the present invention.

5 is a plan view showing the chassis assembly and the main chassis of the present invention.

6 a and b are bottom and top views showing a tray of the present invention.

7A and 7B are perspective views showing the guide member of the present invention.

8 is an operating state diagram showing an operating state of the tray, idler gear and guide member of the present invention.

* Explanation of symbols for main parts of the drawings

16, 17: side wall 20: CD player deck

21: top plate 22: chassis assembly

23 tray 24 clamper mounting plate

25: loading motor 26: operating shaft

27: oil damper 28: support shaft

31, 32, 33: fixed shaft 36, 37: idler gear

42: operation lever

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a CD drive of a CD drive having a tray, and more particularly, to a CD drive of a CD drive having a tray having a structure capable of holding and floating the chassis assembly in accordance with the transfer of the tray.

As shown in FIG. 1 and FIG. 2, a conventional CD drive of a CD player is roughly mounted on both sides of the main chassis 13 with first and second pivot members 18 and 19, respectively. Side portions 16 and 17, first and second guide plates 14 and 15 operatively assembled to the inner side surfaces of the side portions 16 and 17, and the first and second operating members 14 and 15. ) And the cam gear 12 for operating the first and second operating members 10 and 11, the cam gear 12 for operating the first and second operating members 10 and 11, It consists of a solenoid (not shown) for controlling operation, a loading motor (not shown) for driving the cam gear 12, and a plurality of oil dampers (not shown) for cushioning the chassis assembly. .

When explaining the operation of the components of the conventional CD drive of the CD drive in more detail the cam gear 12 has a threaded portion formed on a portion of the outer surface, the guide rail 12 having a snail shape in a predetermined position on the lower surface -1) is integrally formed and rotatably installed by the fixed shaft 12-2.

The cam gear 12, the solenoid and the first and second operating members 10 and 11 are installed at the front end of the main chassis 13, and the first operating member 10 has a zigzag having a predetermined width. As the metal plate of the shape, the operating projections 10-2 and 10-3 protrude upwardly at predetermined positions on both upper end surfaces thereof, and the hinge shafts 10-4 protrude from the operating projections 10-3. It is rotatably coupled to the bottom surface of the front end side of the main chassis 13, the guide projection (10-1) is assembled to be slidably fitted to the guide rail (12-1) of the cam gear (12). The solenoid is installed to control the interlock between the cam gear 12 and the first operating member 10 in accordance with a predetermined control system.

The second actuating member 11 is a metal plate having a zigzag shape, and at one end of the second actuating member 11, the actuating hole 11-1, which is rotatably assembled with the actuating protrusion 10-2 of the first actuating member 10, is formed therethrough. The operation protrusion 11-2 is formed at a predetermined position on the other end of the upper surface, and the shaft is pivotally formed at the front end side of the main chassis 13 by a hinge shaft 11-3 at the middle portion. Are combined.

The first and second guide members 14 and 15 are metal plates having a predetermined size, and each of the plurality of guide holes 14-1, 14-2, 14-3, 14-4, 14-5; 15-1, 15-2, 15-3, 15-4, 15-5, and 15-6, and are installed in the front and back side of the inner side surfaces of the side wall portions 16 and 17 so as to be operated back and forth, and the lower side of the front end of the operation hole 14 -7; 15-8 each having an operating piece 14-6; 15-8 integrally. The actuating holes 14-7 and 15-8 of the first and second guide members 14 and 15 respectively protrude from one end of the first and second actuating members 10 and 11, respectively. 10-3; and 11-2 are assembled to hold and flow the chassis assembly while moving forward and backward, and the loading motor is installed at a predetermined position of the bottom end of the main chassis 13 to move the cam gear 12. Drive it.

In the CD drive apparatus of the conventional CD having the above configuration, a loading motor is driven to load or unload a disc to rotate the cam gear 12 of the cam gear 12. When the first actuating member 10 is operated to a predetermined period by the actuating protrusion 10-1, which is slidably assembled with the guide rail 12-1, the solenoid protrudes so that the first actuating member 10 As the second section is operated in the next section, the second actuating member 11 is interlocked with each other to operate the first and second guide members 14 and 15 in a holding state or a floating state.

However, the conventional CD drive of the CD drive the first and second guide members (14, 15) by the first and second operating members (10, 11), but the structure of the connection assembly between the members is not precise Formed so that the first and second guide members 14 and 15 are not operated at the same time due to mutual deviation, thereby loading the CD by unbalance operation of the first and second guide members 14 and 15 or There was a problem that mechanical malfunction frequently occurs during unloading.

In view of the above problems, the present invention guides the disc loading of Cassidy by using a gear to operate the guide member for holding and flowing the chassis assembly while loading the disc using a tray without using a loading roller. It is an object of the present invention to provide a disk drive of Cassidy having a tray capable of reliably preventing mechanical malfunction due to unbalance operation of the member.

The present invention for achieving the above object is an upper plate portion of the main chassis having a plurality of guide fixing pieces integrally cut and bent at predetermined intervals in the front-rear direction at a predetermined position on the upper surface; Trays each having a front and rear length at both ends of the lower surface thereof; A chassis assembly having a plurality of fixed shafts protruding outwardly horizontally with a predetermined length downward at a lower surface portion of the predetermined position; An actuating lever formed in a plate shape having a predetermined width and length at a predetermined position on one side of an upper surface of the upper plate of the main chassis, and having a rear end bent downward with a predetermined width and operatively assembled with the guide protrusion; A plurality of oil dampers attached to and fixed to a predetermined bottom surface of the main chassis and fitted together with a plurality of support shafts of the main chassis; Shaft support pieces which are cut into predetermined sizes at both bottom surface predetermined positions of the main chassis and are bent vertically upwards; A plurality of idler gears rotatably supported by the shaft support pieces and engaged with the auxiliary gear so as to be rotated by a connecting member; An operating shaft having a round rod having a predetermined length and diameter, the gear engaging with the idler gear at both ends is mounted at both ends, and a drive gear for transmitting the driving force at a predetermined position in the middle is rotatably supported by the shaft support piece. and; A side wall portion of the main chassis vertically mounted to both sides of the main chassis as a metal plate having a predetermined width and length; First and second pivotal members pivotally coupled to predetermined positions of the inner side surfaces of the both side surface portions; First and second guide plates slidably assembled to inner surfaces of the first and second pivot members, respectively; It is characterized in that it is composed of a transmission gear for transmitting a driving force by engaging between the driving gear of the operating shaft and the loading motor for driving the operating shaft.

Below. Embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 3, reference numerals 16 and 17 denote sidewall portions.

The side wall portion 16 is a metal plate having a predetermined size, and has a plurality of support shafts 16-1 and 16-2, a through tube 16-3, and a long hole 16-4 integrally with an inner side surface thereof. The first rotating member 18 is pivotally coupled to the predetermined position by the hinge shaft 16-5.

The plurality of support shafts 16-1 and 16-2 are formed to protrude horizontally inwardly at a predetermined length at predetermined positions on the inner surface of the side wall portion 16 and at predetermined intervals from each other.

The through hole 16-3 is formed through a predetermined diameter at a predetermined position between the plurality of support shafts 16-1 and 16-2.

The long hole 16-4 is formed to penetrate the upper and lower lengths on one side of the inner side surface of the side wall part 16.

The first pivot member 18 has a shape in which the inlet side is opened at a lower predetermined position at one end of the first pivot member 18 and is formed to be cut, and a guide protrusion is formed at a predetermined position at the inner side of the other end. (18-2) are integrally connected to each other by a hinge shaft (16-5) at a predetermined position on the inner surface of the side wall portion (16).

The side wall portion 17 has a through hole 17-1 and 17-2 having a predetermined diameter therethrough and formed therethrough, and a through hole formed between the through holes 17-1 and 17-2. It has a through-hole 17-4, and the 2nd rotation member 19 is pivotally supported by the hinge shaft 17-3 so that rotation is possible.

The second pivotal member 19 has a fixing groove 19-1 which is formed to be cut in an open shape having a predetermined angle downward at an upper predetermined position on one end side, and a guide protrusion at a predetermined position on the lower inner side of the other end side. (19-2) integrally and axially rotatably coupled by a hinge shaft (17-3) to a predetermined position on the inner surface of the side wall portion (17).

4 and 5, reference numeral 20 denotes a deck of the CD player.

The deck 20 of the CD player is roughly a main chassis 13, a top plate 21, a chassis assembly 22, a tray 23, a loading motor 25, and a plurality of oil dampers 27. Has

A plurality of oil dampers 27 are attached to the main chassis 13 at predetermined positions, and the side wall portions 16 and 17 described above are vertically fixed to both sides, and the loading motor 25 is The front end is fixed at a predetermined position.

A worm 25-1 is mounted on the rotating shaft of the loading motor 25.

In addition, a plurality of shaft support pieces 13-1, 13-2, 13-3, and 13-4 which are cut to a predetermined size and are bent vertically upward at predetermined positions at both ends of the main chassis 13 are integrated. The shaft support pieces 13-1 and 13-2 are rotatably assembled with a working shaft 26, and the shaft support pieces 13-3 and 13-4 have idler gears 36 and 37. Is rotatably supported by the shaft.

The operating shaft 26 is a round rod made of metal having a predetermined diameter and length, and has gear portions 29 and 30 engaged with the idler gears 36 and 37 at both ends thereof, and the loading motor at a predetermined position in the middle portion thereof. A drive gear 34 for receiving the driving force of 25 is mounted.

A transmission gear 35 for transmitting a driving force of the loading motor 25 is engaged between the drive gear 34 and the worm 25-1 of the loading motor 25.

The chassis assembly 22 is formed in both sides of the lower end is cut and lowered, the upper surface is mounted with a drive unit (not shown), the lower surface has a predetermined length and protrudes outwards, respectively A plurality of fixed shafts 31, 32, 33 are integrally provided.

Referring to FIGS. 4 and 6, a and b, the tray 23 is moved back and forth to the clamper mounting plate 24 having the clamper 24-1 installed on the upper surface of the chassis assembly 22. It is operatively assembled, and the rack 23-1, 23-2 is formed in the front-back length direction at both ends of a lower surface part.

Referring to the accompanying drawings, FIGS. 7 a and b, reference numerals 38 and 39 denote first and second guide members.

The first guide member 38 is a metal plate having a predetermined size, the first, second and third guide holes (38-1, 38-2, 38-3), the fixing hole (38-4), The loading roller guide hole 38-5, the idler shaft guide hole 38-6, and the bent portion 38-7 are integrally formed.

The first guide hole 38-1 is formed to penetrate through a predetermined width and a length horizontally at an upper predetermined position of one end side of the first guide member 38, and the fixing hole 38-4 is formed in the first guide hole 38-4. It is penetrated in a spatula shape at a predetermined position below the guide hole 38-1.

The second guide hole 38-2 has a predetermined width at a middle upper side of the first guide member 38 and is formed in a zigzag shape, and the third guide hole 38-3 is formed in the second guide hole 38-3. It has a predetermined width and length at the lower predetermined position of the guide hole 38-2 and has a horizontal bottom formed therethrough, and the loading roller guide hole 38-5 has a predetermined position at the other end side of the first guide plate 38. It has a predetermined width and is penetrated in an S shape.

The idler shaft guide hole 38-6 has a predetermined width and length at a predetermined position at the front lower end of the first guide member 38, and is formed in a shape in which the front end portion is raised upward by drawing a predetermined arc.

The bent portion 38-7 has a predetermined width at the lower end of the guide member 38 and is bent at right angles inwardly, and the fixing protrusions 38-8 and 38-9 are upwardly positioned at the front and rear ends of the guide member 38. It is formed to protrude.

The rack member 40 is mounted on the upper surface of the bent portion 38-7 to have a predetermined width before and after the flow.

The rack member 40 is a synthetic base material, the rack is formed on the upper surface and both ends of the fixing projections (40-1, 40-2) having a predetermined length are formed integrally of the bent portion (38-7) It is fitted to the fixing projections 38-8 and 38-9 so as to be movable back and forth on the bent portion 38-7.

The second guide member 39 may include a fixing groove 39-1, first, second and third guide holes 39-2, 39-3, 39-4, and a fixing hole 39-5. The loading roller guide hole 39-6, the idler shaft guide hole 39-7, and the bent portion 39-8 are integrally formed.

The fixing groove 39-1 is formed to be cut out in a shape in which the inlet side is opened to the rear at a predetermined position in the middle of the rear end of the second guide plate 39 and has a predetermined angle, and the first guide hole 39-2 is formed. Has a predetermined width and length at a lower predetermined position of the fixing groove 39-1 and is formed horizontally, and the second guide hole 39-3 is above the first guide hole 39-2. It has a predetermined width and length at a predetermined position and is formed to penetrate upward.

The fixing hole 39-5 has a spatula shape at a predetermined position in the middle of the second guide plate 39, and is formed through the fixing hole 39-5. The third guide hole 39-4 is the fixing hole 39-5. It has a predetermined width and length at a predetermined position on the upper side and is formed horizontally.

The loading roller guide hole 39-6 has a predetermined width at a front end side of the second guide plate 39 and has a predetermined width therethrough.

The idler shaft guide hole 39-7 has a predetermined width and length at a predetermined position at the front lower end of the first guide member 39, and is formed in a shape in which the front end portion is raised upward by drawing a predetermined arc.

The bent portion 39-8 has a predetermined width at the lower end of the guide member 39 and is formed to be bent at right angles inwardly, and the front and rear end portions of the bent portion 39-8 are fixed projections 39-9 and 39-10 at predetermined positions. It protrudes upward.

The rack member 41 is mounted on the upper surface of the bent portion 39-8 so as to flow with a predetermined width before and after.

The rack member 41 is a synthetic base material, the rack is formed on the upper surface and the fixing projections (41-1, 41-2) having a predetermined length at each end is formed integrally to each of the bent portion (38-7) By fitting to the fixing protrusions 39-9 and 39-10, the bent portion 39-8 is mounted on the bent portion 39-8 so as to be movable back and forth.

The first and second guide members 38 and 39 having the above-described configuration are assembled to the inner side surfaces of the side wall portions 16 and 17 so as to be actuated back and forth.

Referring to FIGS. 4 and 5 a and b, a plurality of guide protrusions 21-1 are cut and bent at predetermined intervals in the front and rear length directions at side predetermined positions of the upper plate portion 21. The operating lever 42 is fitted to the guide protrusion 21-1 so as to be movable back and forth.

The actuating lever 42 is a metal plate having a predetermined width and length, the rear end portion is bent vertically downward with a predetermined width, and is elastically supported to be restored forward by the spring member 43, and the tray 23 It is operated back and forth by the rear end of.

The idler gears 36 and 37 are connected by the connecting member 36-2 so as to rotate up and down while being engaged with the auxiliary gear 36-1, and the shaft 36- of the auxiliary gear 36-1. 3) is formed to have a predetermined length in the outward direction, the end is fitted to the idler shaft guide hole (38-6; 39-7) of the first and second guide members (38, 39) to the idler shaft guide hole ( 38-6; 38-7).

Hereinafter, the operation and effect of the present invention having the configuration as described above will be described in detail.

Referring to FIGS. 4, 5 and 8 a and b, when the tray 23 is loaded to seat the compact disc 50, the rear end of the tray 23 is formed of the upper plate 21. When pushing the actuating lever 42 which is assembled so as to be movable back and forth by the guide protrusion 21-1, the actuating lever 42 is pushed backward while pushing the actuating switch means (not shown) of the loading motor 25. When actuated, the loading motor 25 is rotated clockwise as shown in FIG. 8, and the transmission gear 35 is rotated counterclockwise, and the operating shaft 26 is again clockwise. Since the idler gears 36 and 37 meshed with the gears 29 and 30 mounted at both ends of the operating shaft 26 are rotated clockwise again, the auxiliary gear 36-1 is upward. Rotate counterclockwise as it is rotated. At this time, since the auxiliary gear 36-1 is rotated in engagement with the racks 23-1 and 23-2 of the tray 23, the tray 23 is driven by the driving force of the auxiliary gear 36-1. When the predetermined position is reached and disposed horizontally, the auxiliary gear 36-1 rotates downwardly, that is, clockwise, so that the ends of the shaft 36-3 of the auxiliary gear 36 are rotated first and first. 2 Since the first and second guide members 38 and 39 are operatively assembled with the idler shaft guide holes 38-6 and 39-7 of the guide members 38 and 39, the idler shaft guide holes 38 are provided. -6; 39-7 is operated forward by the front curve portion and the auxiliary gear (36-1) is engaged with the rack members (40, 41) of the first and second guide members (38, 39) The first and second guide members 38 and 39 operate forward while being rotated counterclockwise, so that the first and second guide parts are provided on both sides of the chassis assembly 22. The chassis assembly is released by releasing the fixed shafts 31, 32, and 33 held by the fixing holes 38-4 and 39-5 and the fixing grooves 39-1 of the 38 and 39 in a floating state. Since the 22 is supported only by the oil damper 27 fitted with the plurality of support shafts 28, the oil damper 27 is also cushioned by the oil damper 27 even when the external shock is applied. You can hear it.

Even if the auxiliary gear 36 is interlocked with the rack members 40 and 41, the rack members 40 and 41 are not fixed to the fixing protrusions 40-1 and 40-2; 41-1 and 41-2. It is installed to flow back and forth by the smooth operation can be.

In addition, when the disk 50 is unloaded, the disk 50 is unloaded by the components being operated in the reverse order of the operation at the time of loading, so that the chassis assembly 22 is connected to the first and second guide members 38,. Only by 39) can be converted to the holding state to minimize the damage of the component due to external impact.

As is apparent from the above, the present invention simultaneously operates the first and second guide members 38 by a gear without operating the first and second guide members 38 and 39 by the conventional operation members 10 and 11. Since 39 is operated in a holding and floating state, the member can reliably prevent malfunction of the deck 20 due to assembly and operation error.

Therefore, the present invention is a very excellent invention which can prevent the malfunction of the deck due to the assembly precision since the guide member is operated in the holding and floating state by the gear.

Claims (9)

An upper plate portion 21 of the main chassis 13 having a plurality of guide fixing pieces 21-1 integrally cut and bent at predetermined intervals in a front and rear at a predetermined position on an upper surface thereof; Trays 23 each having racks 23-1 and 23-2 formed in front and rear lengths at both ends of the lower surface thereof; A plurality of support shafts 28 which protrude and have a predetermined length downward at a lower surface portion of the predetermined position; A chassis assembly (22) having a plurality of fixed shafts (31, 32, 33) protruding outwardly horizontally with a predetermined length at predetermined positions on both sides; The plate shape having a predetermined width and length at a predetermined position on one side of the upper surface portion 21 of the upper plate portion 21 of the main chassis 13, the rear end portion is bent downward with a predetermined width, so as to be able to operate back and forth with the guide protrusion 21-1. An actuating lever 42 assembled; A plurality of oil dampers (27) attached to and fixed to a predetermined bottom surface of the main chassis (13) and fitted together with the plurality of support shafts (28) of the main chassis (13); Shaft support pieces 13-1, 13-2, 13-3, and 13-4 cut into predetermined positions at both bottom surfaces of the main chassis 13 and bent vertically upward; A plurality of idler gears 36 rotatably supported by the shaft support pieces 13-3 and 13-4 and rotated in engagement with the auxiliary gear 36-1 so as to be rotated by the connecting member 36-3; 37) and gears 29 and 30 engaged with the idler gears 36 and 37 at both ends by round rods having predetermined lengths and diameters are mounted at both ends, and drive gears 34 for transmitting driving force to predetermined positions in the middle part. An operating shaft (26) mounted thereon and rotatably supported by the shaft support pieces (13-1, 13-2); Sidewall portions (16, 17) of the main chassis (13) mounted vertically on both sides of the main chassis (13) as metal plates having a predetermined width and length; First and second pivotal members (18, 19) rotatably coupled to predetermined positions of the inner side surfaces of both side surfaces thereof; First and second guide plates (38, 39) slidably assembled to inner surfaces of the first and second pivot members (18, 19), respectively; A loading motor 25 engaged with the drive gear 34 of the working shaft 26 to drive the working shaft 26; Cassidy disk drive device having a tray characterized in that the transmission gear 35 is engaged between the drive gear 34 and the loading motor 25 to transmit a driving force. The side wall portion 16 of the main chassis 13 has a plurality of support shafts 16-1 and 16-2, which have a predetermined length at a predetermined position on the inner surface and protrude horizontally inwardly. A through hole 16-3 formed therethrough with a predetermined diameter at a predetermined position between the fixing protrusions 16-1, 16, and 2, and a long hole 16 formed therethrough having an upper and lower length at some upper predetermined position; -4) Cassidi's disc drive device with a tray, which is integrally mounted and mounted on one side of the main chassis (13). The side wall portion 17 of the main chassis 13 has a plurality of through holes 17-1 and 17-2 formed therethrough at predetermined positions at lower portions of both side ends, respectively. The through hole 17-4 is formed to have a predetermined diameter at an upper predetermined position between the through holes 17-1 and 17-2, and the hinge shaft 17- protrudes at a predetermined position on the lower inner surface of the middle part. 3) Cassidi's disc drive device with a tray, characterized in that it has an integrated body. According to claim 1, wherein the first rotating member 18 has a fixed groove (18-1) formed in a cut-out shape in which the inlet is opened with a predetermined angle downward in a predetermined position of the lower end portion, and protrudes in a predetermined position inside the other end portion. A tray characterized in that the guide protrusion (18-2) integrally and rotatably coupled to the hinge shaft (16-5) protruding the inner surface of the one side wall portion 16 of the main chassis (13) Cassidy disk drive device provided with. According to claim 1, wherein the second pivot member 19 is a fixed groove (19-1) formed in the shape of the inlet is opened in a predetermined angle to the upper predetermined position on one end side downwards, and the lower inner surface of the other end side predetermined It is characterized in that the axially coupled to the inner side hinge shaft (17-3) of the other side wall portion 17 of the main chassis 13 integrally having a guide protrusion (19-2) formed in the position Cassidy's disc drive with trays. 2. The first guide plate (38-1) according to claim 1, wherein the first guide plate (38) is formed through a first guide hole (38-1) having a predetermined width and length horizontally at a predetermined position on one end side thereof, 1) a fixing hole 38-4 penetratingly formed in a spatula shape at a lower predetermined position of the lower part 1), a second guide hole 38-2 penetrating in a zigzag shape with a predetermined width in the middle upper side thereof, and the second The third guide hole 38-3 which is horizontally penetrated and has a predetermined width and length at a lower predetermined position of the guide hole 38-2, and the loading is formed penetrating in an S shape with a predetermined width at a predetermined position at the front end side. A roller guide hole 38-5, an idler shaft guide groove 38-6 having a predetermined width and length at a predetermined position at the lower end of the front end portion, and having a rising shape when the front end portion draws a predetermined arc, and a predetermined portion at the lower end portion thereof. A bent portion 38-7 having a width and bent perpendicularly inwardly and having fixed projections 38-8 and 38-9 at predetermined positions on the front and rear ends of the upper surface. Cassidi's disk drive device having a tray, characterized in that the fixed projections (38-8, 38-9) are integrally mounted to the rack member (40). According to claim 1, The second guide plate 39 is a fixed groove (39-1) formed in the form of a cut-out in the shape of the inlet is opened to the rear at a predetermined position in the middle of the rear end and the fixed groove (39-1) The first guide groove (39-2) having a predetermined width and length at the lower predetermined position of the through) horizontally formed and the predetermined width and length at an upper predetermined position of the first guide hole (39-2) Of the second guide hole 39-3, which is formed to be penetrated into a curved shape, a fixing hole 39-5 having a spatula shape at a predetermined position in the middle portion, and a penetrating form thereof, and the fixing hole 39-5. Third guide hole (39-4) formed horizontally through a predetermined width and length at a predetermined position on the upper side, and loading roller guide hole (39-6) formed through the S shape with a predetermined width at a predetermined position on the front end side. And a child having a predetermined width and length at a lower portion of the front end and having a rising shape when the front end draws a predetermined arc. And a bent portion 39-8 having a predetermined width at the lower end and bent at right angles inwardly and having fixing protrusions 39-9 and 39-10 at predetermined positions on the front and rear ends of the upper surface. And a rack member (41) having the fixing protrusions (39-9, 39-10) integrally mounted thereon. The support shaft (36-2) of claim 1, wherein the support shaft (36-2) rotatably supports the auxiliary gear (36-1) of the idler gear (36, 37) and has a predetermined length and the first and second guide plates (38). And 39, one end of each of which is slidably assembled in the idler shaft guide grooves 38-6 and 39-7 formed therethrough. 8. The rack member (40, 41) according to claim 6 or 7, wherein the rack member (40, 41) has a rack formed on the upper surface, the fixing projections 40-1, 40-2; 41-1, 41- 2) Cassidy's disk drive apparatus with a tray, characterized in that integrally mounted to the bent portion (38-7; 38-8).