JPH0677052U - Roulette disc changer - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a roulette type changer mechanism in which a turntable is reversibly rotatable in a drive switching mechanism capable of controlling three drive systems with one motor. [Structure] When the lever member 27 is rotated in the clockwise direction F together with the idler gear 29 to approach the shoulder portion 34b of the plate 34, the tip 27d of the lever member 27 is moved to the latch lever 4
2 is pushed away to rotate and engage with the shoulder portion 34b, and the idler gear 29 rotates while meshing with the gear portion 43a of the plate 43, and the idler gear 28 meshes with the driven gear 37. At this time, the latch lever 42 latches the lever member 27 by the urging force of the spring 34d. Even if the rotation direction of the motor changes in this state, the lever member 27 is latched, and therefore does not rotate. Therefore, the rotational force in the rotation direction R at this time is the pinion gear 26 and the idler gear 2.
Since it is transmitted to the gear 37 via 8, the turntable can be reversed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a roulette type disc changer suitable for a multi-type disc player capable of reproducing a plurality of discs such as CDs (compact discs) arranged side by side on a turntable in a desired program order.

[0002]

[Prior art]

 Conventionally, as a multi-type disc player, a turntable for placing a CD is installed on a slide table in a casing, and a substrate on which a pick-up, a disc support and members for driving them are assembled is hinged on the slide table side. It is rotatably supported in the vertical direction by means of a slider, and the free end of the substrate is linked to a rotating cam body provided on the slide table side. 2. Description of the Related Art There is known a disc player that is configured so that it can be played back by being displaced in a posture, and a CD on a turntable is supported by a disc support.

FIG. 17 shows a main part of a drive mechanism of the multi-type disc player. In the figure, 1 is a chassis supported on the slide table side, and 2 is a substrate supported on the chassis so as to be rotatable and displaceable by a hinge portion 3. The substrate 2 includes an optical pickup 4, a disk support 5, and the like. A driving member and the like are assembled.

The chassis 1 is provided with _three motors M ₁ , M ₂ and M ₃ . The motor M ₁ is a loading motor, and a slide table (not shown) that supports the chassis 1 by a drive system including a pulley 6, a belt 7, a pulley 8, a gear 9, a gear 10, a pinion 11 and a rack 12. Is to slide. The motor M ₂ is a turntable motor, and is configured to rotate the turntable in a fixed direction by a drive system including a pulley 13, a belt 14, a pulley 15, a pinion 16 and a turntable gear 17. The motor M ₃ is a chucking motor for rotationally displacing the substrate 2 rotatably supported by the hinge portion 3, and includes a pulley 18, a belt 19, a pulley 20, a gear 21, a gear 22, A drive system including a rotary cam body 23 that is integrated with the gear 22 and a pin 24 that is on the free end side of the base plate 2 and that engages with the spiral cam surface of the rotary cam body is used to move the base plate 2 from a downward inclined posture. Rotate and displace to a horizontal position for playback.

[0005]

[Problems to be solved by the device]

 Now, in the drive mechanism of the above-mentioned conventional multi-type disc player, a dedicated motor is used for each operation such as loading, turntable, chucking, so that the cost of the motor is high and the mechanism as a whole is large. There is a problem that the increase in the weight causes disadvantages such as drop tests.

Therefore, the applicant of the present application has proposed in Japanese Patent Application No. 4-209832 the following drive switching mechanism capable of controlling the above-mentioned three drive systems by one motor. FIGS. 10 to 17 show an example of the drive switching mechanism. In FIGS. 10 and 11, reference numeral 1 denotes a chassis, which has a motor M fixed to the rear surface thereof and a motor rotation shaft 25 protruding to the front surface side. The pinion gear 26 is fixed, and the L-shaped lever member 27 is rotatably supported at its bent portion. Of the lever portions 27a and 27b protruding from the bent portion of the L-shaped lever member 27, a support shaft 27c is integrally formed on the tip side of one lever portion 27a, and the support shaft 27c has two upper and lower idler gears 2a. 8, 29 are rotatably supported by a spring 30 while being axially biased, and a gear 28 is meshed with a pinion gear 26. With this configuration, the two-stage idler gears 28 and 29 follow the forward and reverse rotations of the motor M, and can rotate rightward and leftward together with the lever member 27.

A solenoid 31 is provided at a predetermined portion of the chassis 1, one end of an arm 33 rotatably supported by a support shaft 32 is linked to the solenoid 31, and the other end of the arm 33 slides on the chassis. It is linked to a plate 34 that is movably arranged. The plate 34 is slid in the direction of the arrow by the solenoid 31 via the arm 33. Reference numeral 35 is a spring for biasing the plate 34 at a fixed position.

In the rotation range where the idler gears 28, 29 supported by the lever member 27 rotate about the rotation shaft 25 of the motor M, the three driven gears 36, 37, 38 are rotatable respectively. It is arranged. The first driven gear 36 is supported coaxially with the loading pulley 6 shown in FIG. 17, and the second driven gear 37 is supported coaxially with the turntable gear 16 shown in FIG. The third driven gear 38 is supported coaxially with the gear 39 on the back side of the chassis 1, and the gear 39 is meshed with the gear 22 integrated with the rotary cam body 23 shown in FIG. FIG. 12 shows a state in which the rotary cam body 23 and the gear 22 are disassembled.

On the chassis 1, a stopper piece 40 is provided in a part of a rotation area of a lever portion 27a that supports the idler gears 28 and 29. Next, the operation and the operation of the drive switching mechanism will be described.

10 and 13, the solenoid 31 is in a non-operating state. Here, when the solenoid 31 is operated and the motor M is normally rotated (clockwise in the drawing) in FIG. 13, the idler gear 28 rotates together with the lever member up to the stopper piece 40 as shown in FIG. It meshes with the driven gear 36. At this time, the solenoid 31 is deenergized after being operated for a certain period of time. In this state, when the motor M 1 is continuously driven while rotating in the normal direction, the drive system of the pulley 6, the belt 7, the pulley 8, the gear 9, the gear 10, the pinion 11 and the rack 12 is operated to perform the loading operation. That is, the slide table supporting the chassis 1 is slid to allow the discs to be exchanged. At this time, the limit switch (not shown) on the set side detects the end of loading open, and the motor M is stopped. At that time, since the substrate 2 on which members such as the pickup 4 are mounted is loaded at the same time, it is possible to perform loading while performing and performing while the loading is open.

Following the above, the motor M is reversely rotated. At this time, since the solenoid 31 is deenergized, the plate 34 is positioned at a fixed position. The lever member 27 and the idler gears 28, 29 which follow the rotation of the motor M have the tips of the lever portions 27b restricted by one shoulder portion 34a of the plate 34 as shown in FIG. Continue to rotate (reverse) on the spot. As a result, the above-mentioned loading drive system is driven in the opposite direction, so that the slide table is slid in the opposite direction and the loading is closed. At this time, the end of loading close is detected by the limit switch (not shown) on the set side, and the motor M is stopped.

Next, referring to FIG. 13, when the solenoid 31 operates, the motor M is rotated in the reverse direction. At this time, since there is nothing to restrict the lever member 27, the lever member 27 can rotate counterclockwise (in the drawing) together with the idler gears 28 and 29, and the lever member 27b is placed on the chassis 1 as shown in FIG. It rotates until it is regulated by another stopper piece 41 provided, and at the same time, the idler gear 29 meshes with the driven gear 38. In this state, the rotation (reverse rotation) of the motor M is transmitted to the rotary cam body 23 via the gears 39 and 22. As shown in FIG. 12, the rotating cam body 23 is formed into an up-down cam that returns from the highest part of the cam part to the highest part through the lowest part by one rotation.

As shown in FIG. 15, since the engaging pin 24 at the tip of the substrate 2 is engaged with the cam portion of the rotating cam body 23, the rotating cam body 23 is rotated by the reverse rotation of the motor M. 16, the substrate 2 completes chucking down (lowermost) when the gear 22 makes a half rotation with the hinge portion 3 [see FIG. 10] as a fulcrum, as shown in FIG. At this time, the limit switch (not shown) for detecting the angular position of the gear 22 detects the completion of chucking down, and the motor M is stopped. After this operation is completed, when the motor M is operated in the reverse direction again, the gear 22 is rotated again by half, and the substrate 2 completes chucking up (uppermost position). At this time, similarly to the above, the limit switch detects the chucking-up completion from the angular position of the gear 22, and the motor M is stopped.

As described above, when the motor M rotates in the reverse direction and then rotates in the normal direction, the lever member 27 rotates clockwise together with the idler gears 28 and 29. At this time, since the solenoid 31 is deenergized, the plate 34 is in a fixed position. As a result, as shown in FIG. 13, the tip of the lever portion 27b is restricted by the shoulder portion 34b on the opposite side of the plate 34, and the idler gear 28 meshes with the driven gear 37. As a result, the turntable is rotated via the gears 16 and 17. An angular position of the gear 17 is detected by an optical sensor or the like, and when the designated position is detected, the motor M is stopped.

According to the drive switching mechanism of the prior application described above, two three motors, which are used for loading, turntable, and chucking in the conventional multi-type disc player, are used. Therefore, the transmission mechanism can be simplified, the transmission mechanism can be simplified, and the cost can be significantly reduced. Also, by reducing the weight of two motors, it is possible to reduce damage in a drop test, etc. However, in this drive switching mechanism, especially the roulette type changer mechanism part, there are still the following improvements and room. is there.

8A and 9 show the roulette type changer mechanism section, which is slightly different from the corresponding section in the drawings, but has substantially the same configuration, and the same reference numerals as those in the above drawings are used. The same or similar members are shown. As is apparent from FIG. 8, the turntable is in the rotatable state only when the gear 26 rotates clockwise F and the tip end 27d of the lever portion 27b is restricted by the shoulder portion 34b of the plate 34. Therefore, when the rotation direction of the gear 26 changes to the counterclockwise direction R, the regulation is released as apparent from FIG. 7B, so that the turntable cannot be rotated.

As described above, in the configuration of the roulette type changer mechanism portion of the prior application, the turntable can be rotated only in a fixed direction. Therefore, for example, in the case of 6 CD changer mechanism parts, in order to move to the adjacent disc in the direction opposite to the rotation direction, it is necessary to rotate the turntable for about one turn, and rapid disc exchange cannot be performed. There was a problem.

[0018]

[The purpose of the device]

 In order to solve such a problem, an object of the present invention is to provide a roulette type changer mechanism in which a turntable is reversibly rotatable in a drive switching mechanism capable of controlling the above-mentioned three drive systems by one motor. is there.

[0019]

[Means for Solving the Problems]

 In order to achieve the above object, the roulette type changer mechanism of the present invention comprises a motor capable of rotating in the forward and reverse directions, a pinion rotated by the motor, and a lever member which is rotatably supported by meshing with the pinion. An idler gear rotatably supported, a control member for controlling the turning range of the lever member, a roulette type turntable having a driven gear portion provided in the turning range of the idler gear, the turntable and the idler gear. It is characterized in that it has a holding means for holding the engagement and a releasing means for releasing the retention of the engagement when engaged with.

[0020]

[Action]

 When the idler gear meshes with the turntable, the mesh is maintained. Therefore, since the turntable can be rotated in the reverse direction, the time required to move to the adjacent disk in the reverse direction can be shortened.

[0021]

【Example】

 An embodiment of the present invention shown in the drawings will be described below. 1 to 7 show an embodiment of a roulette type autochanger mechanism according to the present invention, and the same reference numerals as those in the above drawings denote the same or similar members.

In the above-described embodiment, the structure different from that of the prior application is that, for example, a latch lever 42 is provided as a holding means. The latch lever 42 is rotatably arranged on the plate 34 and is biased in a fixed direction (latching direction) by a spring 44. Reference numeral 43 is a plate having a gear portion 43a and is arranged on the plate 34.

As shown in FIG. 1, when the lever member 27 is rotated clockwise with the idler gear 29 in the clockwise direction F to approach the shoulder portion 34 b of the plate 34, the tip 27 d of the lever member 27 pushes the latch lever 42 away. The idler gear 29 rotates while meshing with the gear portion 43a of the plate 43, and the idler gear 28 meshes with the driven gear 37. At this time, the latch lever 42 latches the lever member 27 by the urging force of the spring 34d as shown in FIG.

Even if the rotation direction of the motor changes in this state, the lever member 27 is latched, so that the lever member 27 does not rotate. Therefore, the rotational force in the rotation direction R at this time passes through the pinion gear 26 and the idler gear 28 to the gear. Since it is transmitted to 37, the turntable can be rotated.

The release of the latched state of the lever member 27 described above is performed as follows. The plate 34, on which the latch lever 42 and the plate 43 are arranged, is slidably supported on a chassis (not shown) and is engaged with an rotatably pivoted arm 33. Is connected to the solenoid 31 and is urged by the spring 33a. When the solenoid 31 operates, the plate 34 is slid in the left direction L by the arm 33. At this time, since the latch lever 42 slides in the same direction as the plate 34, the latched state of the lever member 27 by the latch lever 42 is released. When the motor is rotated in the counterclockwise direction R during the operation of the solenoid 31, the gear 28 and the lever member 27 also rotate in the same direction, and move away from the operating range of the gear 37. After that, the solenoid 31 stops operating.

The latching mechanism and the releasing mechanism of the lever member 27 may have various configurations other than those described above.

[0027]

[Effect of device]

 As described above, according to the present invention, since the mechanism for holding the mesh between the turntable and the idler is provided, the reversible rotation of the turntable becomes possible, and the moving time to the desired disk can be shortened. it can.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

FIG. 2 is a schematic view showing an embodiment of the present invention.

FIG. 3 is a schematic view showing an embodiment of the present invention.

FIG. 4 is a schematic view showing an embodiment of the present invention.

FIG. 5 is a schematic view showing an embodiment of the present invention.

FIG. 6 is an exploded perspective view of the above embodiment.

FIG. 7 is an assembled perspective view of the above embodiment.

FIG. 8 is a schematic view showing a roulette type changer mechanism portion of the prior application.

FIG. 9 is a schematic view showing a roulette type changer mechanism portion of the prior application.

FIG. 10 shows an example of a drive switching mechanism when the present invention is applied to a multi-type disc player, and is a plan view showing a state during chucking operation of the player.

FIG. 11 is an enlarged cross-sectional view of a main part of the mechanism.

FIG. 12 is an exploded perspective view of a rotating cam body.

FIG. 13 is a plan view of a drive switching mechanism when the turntable of the player is operating.

FIG. 14 is a plan view of a drive switching mechanism during a loading operation of the player.

FIG. 15 is a side view showing a state in which the rotary cam body and the substrate are linked with each other when chucking up.

FIG. 16 is a side view showing a state in which the rotary cam body and the substrate are linked with each other during chucking down.

FIG. 17 is a plan view of a drive switching mechanism in a conventional multi-type disc player.

[Explanation of symbols]

1 Chassis 2 Substrate 3 Hinge Part 4 Pickup 5 Disc Support M ₁ , M ₂ , M ₃ Motor 6 Pulley 7 Belt 8 Pulley 9, 10, Gear 11 Pinion 12 Rack 13 Pulley 14 Belt 15 15 Pulley 16 Pinion 17 Gear 18 18 Pulley 19 Belt 20 Pulleys 21 and 22 Gears 23 Rotating cam bodies 24 Engaging pins 25 Rotating shafts of motor M 26 Pinion gears 27 Lever members 27a and 27b Lever portions 27c Spindles 28 and 29 Idler gears 30 Springs 31 Solenoids 32 Spindles 33 Arms 34 Plates 35 Springs 36 , 37, 38 Driven gear 40 Stopper piece 34a, 34b Shoulder 41 Stopper piece 42 Latch lever 43 Plate 44 Spring

Claims (1)

[Scope of utility model registration request] 1. A forward / reverse rotatable motor, a pinion rotated by the motor, an idler gear meshed with the pinion and rotatably supported by a lever member rotatably supported, and the lever member. Member for controlling the rotation range of the idler gear, a roulette type turntable having a driven gear portion provided in the rotation range of the idler gear, and a holding means for holding the meshing state of the turntable and the idler gear. And a releasing means for releasing the holding of the engagement, a roulette type disc changer.