JPS634277Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a disk elevating device for a disk player, and in particular to a disk elevating device that allows a lift plate for lifting and lowering the disk to descend to the lowering limit position by its own weight during a power outage or power off. .

With the video disc stored in the jacket, insert the jacket into the video disc player, and when you pull out the jacket, place the disc on the lift plate above the platter, and lower the lift plate when you operate the play key. A video disc player is known in which the disc is placed on a platter. In this type of video disc player, when the power switch is normally turned on and the power is connected, the lift plate rises from the lower limit position, and the disk inserted with the jacket moves to the upper limit position of the lift plate. Supported by

However, when the disk is supported above the platter by the lift plate, for example, if a power outage occurs or the power outlet is disconnected for some reason, the conventional disk lifting device cannot move the disk for a long time. It remains supported on the lift plate for an extended period of time. However, inside the disk player,
The temperature is relatively high compared to the outside, and since the disk is supported only at its center, there are drawbacks such as the possibility that the peripheral edge of the disk may bend and deform due to its own weight.

The present invention eliminates the above-mentioned drawbacks, and uses a plunger solenoid mechanism to control the lift plate that raises and lowers the video disc within the player body, and the power to the solenoid is cut off during a power outage or when the power is turned off. The lift plate is configured to be lowered by its own weight, so that the disk is left inside the player body with only the central portion supported by the lift plate, and the disk periphery is prevented from being bent or deformed due to its own weight. An object of the present invention is to provide a disk elevating device for a disk player.

Fig. 1 is a perspective view of an embodiment of a video disc player to which the disc elevating device of the present invention is applied, Fig. 2 is a perspective view of an embodiment of the above-mentioned disc elevating device, and Figs. 3 and 5 are the above-described FIGS. 4 and 6 are a plan view showing the disk lifting device in a non-energized state and a partially sectional side view showing the main parts thereof; FIGS. 4 and 6 are a plan view showing the disk lifting device in a energized state and a part showing the main parts thereof; A cross-sectional side view is shown.

In FIG. 1, a video disk player 1 includes a pair of guide rails 4 that serve as insertion guides for a jacket 3 and a disk 5 placed inside a player body 2 having a disk jacket insertion slot 2a formed on the front surface. Rotating platter 6 or platter 6
a pick-up cartridge 7 that moves above and reproduces signals recorded on the disk 5; and a disk lifting device 9 that drives a lift plate 8 that moves the disk 5 up and down with respect to the platter 6.
etc. are provided.

The disk lifting device 9, as shown in FIG.
The cross-shaped telescopic leg 10 that lifts and lowers the lift plate 8 and the horseshoe-shaped support plate 8a that supports it is powered by a lifting motor 13 via a gear mechanism 12 having a switching gear 12a whose meshing state is switched by a plunger solenoid mechanism 11. The structure is such that it is driven in this manner. The lift plate 8 has three legs 8b that pass through the center of the platter 6 so as to be able to move up and down.When the disk 5 is regenerated, the support plate 8a is separated below the legs 8b, so the lift plate 8 is attached to the platter 6. 6 and rotates together with it.

The detailed structure and operation of each part of the disk lifting device 9 will be explained below in connection with the insertion operation of the disk jacket 3.

When the power cord 14 is connected to an outlet and a power switch (not shown) is turned on, the solenoid 11s of the plunger solenoid mechanism 11 is energized and excited in the disk lifting device 9 shown in FIG. being pushed out. As a result, the support base 15 of the switching gear 12a rotates about the support shaft 15a against the tension spring 16, and the switching gear 12a meshes with both the worm wheel 12b and the partially toothed gear 12c. Therefore, the rotation of the worm gear 12d is caused by the partially toothed gear 1.
2c, and after the above-mentioned engagement, the power of the lifting motor 13 that has been energized and started is transmitted to the belt 17.
is transmitted to the worm gear 12d via the worm gear 12d, so the partially toothed gear 12c rotates counterclockwise in FIG.

The partially toothed gear 12c is connected to a lift plate lift lever 19 via a tension spring 18. Therefore, as the partially toothed gear 12c rotates, the lift plate lift lever 19 moves around the support shaft 19a.
Rotates clockwise in the figure. This lift plate elevating lever 19 has an engaging portion 21 that engages with the drive pin 20 of the cross-shaped telescoping leg 10. Therefore, this rotational movement causes the cross-shaped telescoping leg 10 to extend upward and displace the disk. The lift plate 8 on the lifting device 9 rises from the lower limit position to the upper limit position shown in FIG.

Here, the lower limit position of the lift plate 8 means that the lift plate 8 is locked to the platter 6,
This is a position where the upper surface is slightly lower than the disk mounting surface of the platter 6, and the upper movement limit position is a position where the upper surface of the disk 5 is placed at a height slightly lower than the disk mounting surface of the platter 6. This position is at the same height as the insertion path of the butt 3.

In this way, by turning on the power switch, the lift plate 8 rises to the upper movement limit position, but due to the rotation of the intermittent gear 12c, the toothless portion 22 of the intermittent gear 12c moves, as will be explained next. The jacket insertion prevention mechanism 23 is unlocked. The jacket insertion prevention mechanism 23 is a mechanism for preventing the jacket 3 from being inserted when the lift plate 8 is at its lower limit position, such as when the power switch is turned off or when the disc 5 is being played. In this embodiment, this mechanism 23 includes a roller 25 provided at the lower end of a pin 24 that is integrated with a clamp beam (not shown) that clamps the front edge of the inserted jacket 3, and is engaged with the roller 25. An L-shaped slide lever 27, which can be freely displaced within a predetermined range in the insertion direction of the jacket 3, is connected to the two-pronged lock lever 26 by a connecting pin 28, and the toothless portion 22 of the toothless gear 12c is connected to the end 27a of the slide lever 27.
It is configured so that it can be locked and released.

Therefore, when the toothless portion 22 of the toothless gear 12c releases the engagement with the end portion 27a of the slide lever 27, the slide lever 27 becomes movable, and at the same time, the lock lever 26 also releases its locking state with respect to the roller 25. Therefore, when the jacket 3 is inserted through the jacket insertion opening 2a, the lock lever 26 is rotated about the support shaft 26a while being pushed by the roller 25, and the slide lever 27 is thereby moved in the direction in which the jacket 3 is inserted. is displaced in the opposite direction.

Note that the forward path of the jacket 3 inserted into the player body 2 is blocked by the lift plate 8 which is at the upper limit position, but when the roller 25 passes by the side of the lift plate elevating lever 19, Push the lever 19 and rotate it counterclockwise. As a result, the lift plate elevating lever 19 moves against the spring 18 and lifts the lift plate 8.
As a result, the lift plate 8 is lowered to near the lowering limit position while the roller 25 passes beside the lift plate elevating lever 19, and the lift plate 8 is lowered at this time. The operating positions of the lever 19 and the roller 25 are indicated by two-dot chain lines in FIG. When the roller 25 finishes passing the side of the lift plate 8, the lift plate elevating lever 19 tries to return to its original position by the force of the spring 18, and the lift plate 8 comes into contact with the lower surface of the jacket 3 and is locked. Rotation is allowed until the

When the inserted jacket 3 reaches the insertion limit position, the disk 5 inside the jacket 3 is clamped by a disk clamp mechanism (not shown), and the jacket 3 alone can be pulled out in an empty state. When the jacket 3 is pulled out, the lift plate 8 supports the central portion of the disk 5 from below, thereby completing the support of the disk 5 at the upper limit position of the lift plate 8.

To play disk 5, lift plate 8
The solenoid 11s must be lowered to the lower limit position, and the lowering operation at this time is usually performed by cutting off the current to the solenoid 11s when a play button (not shown) is pressed. That is, this de-energization causes the switching gear 12a to switch to the worm wheel 1.
2b and the partially toothed gear 12c and are disengaged from each other, the lift plate 8 and the disc 5 descend to the lower limit position due to their own weight, as shown in FIG.

Also, to recover disk 5 that has finished playing,
The disk 5 must be raised once to the upper limit position of the lift plate 8, but normally, when an eject button (not shown) is pressed, the solenoid 11s and the lifting motor 13
This is done by energizing.
The operation during this energization is the same as that described as the operation when the power switch is pressed.

In this way, the disk elevating device 9 having the above-mentioned structure can move the lift plate 8 up and down at will by controlling the energization of the solenoid 11s and the elevating motor 13.

When the lift plate 8 is supporting the disk 5 at its upper limit position, a power outage accident occurs, the power cord 14 is accidentally pulled out, or the power switch is turned off. Suppose that it is. In this case, as shown in FIG. 3, when the solenoid 11s is de-energized, the lift plate 8 and the disk 5 are lowered by their own weight to the lower limit position as described above, and the disk 5 is placed on the platter 6. Therefore, the inconvenience that would occur if the disk 5 is left in the relatively high temperature player body 2 for a long time in an unstable state with only the central portion supported by the lift plate 8 does not occur. As a result, bending and deformation of the peripheral edge of the disk 5 due to heat and own weight can be effectively prevented.

Furthermore, if the video disk player 1 is de-energized due to a power outage accident or the like while the jacket 3 is being inserted, the switching gear 12a will be separated within the gear mechanism 12 due to the demagnetization of the solenoid 11s, but the slide lever Since the end portion 27a of 27 is displaced to a position where the rotation of the partially toothed gear 12c is prevented, the partially toothed gear 12c is prevented from rotating. Therefore,
Lift plate 8 is substantially a solenoid 11
The state remains the same as when s was energized. Therefore, the jacket 3 can be pulled out during insertion, or can be inserted to the insertion limit position.

Incidentally, when the jacket 3 is inserted to the insertion limit position, the disk 5 is lowered together with the lift plate 8 to the downward movement limit position at the same time as the jacket 3 is pulled out.

In the above embodiment, the disc player is not limited to the video disc player 1, but may be an audio disc player.

As explained above, according to the disk lifting device for a disk player according to the present invention, a plunger solenoid is installed in the gear mechanism that transmits the power of the lifting motor to the lift plate that lifts and lowers the disk inserted into the disk player main body. Since the configuration includes a switching gear that is driven by a mechanism to engage and disengage, power outages may occur when the lift plate is supporting the disk at its upper limit position, or the power switch may be accidentally turned off. If the solenoid is demagnetized and the switching gear is disengaged from the gear mechanism along with the plunger, the lift plate, which was at its upper limit position, will fall to its lower limit position due to its own weight, and the disc will move onto the platform. Since the disk is placed on a high temperature environment where it is easy to change its flexural deformation, it will definitely prevent the inconvenience caused by leaving the disk in an unstable position with only the center part supported by the lift plate for a long time. It has excellent effects such as being able to prevent

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of a video disc player to which the disc elevating device of the present invention is applied, Fig. 2 is a perspective view of an embodiment of the above-mentioned disc elevating device, and Figs. 3 and 5 are the above-described FIGS. 4 and 6 are a plan view showing the disk lifting device in a non-energized state and a partially sectional side view showing the main parts thereof; FIGS. 4 and 6 are a plan view showing the disk lifting device in a energized state and a part showing the main parts thereof; FIG. 3 is a cross-sectional side view. 1...Video disc player, 2...Player body, 5...Disc, 6...Platform, 8...
...Lift plate, 11... Plunger/solenoid mechanism, 11p... Plunger, 11s... Solenoid, 12... Gear mechanism, 12a... Switching gear, 13... Lifting motor, 15... Support base.

Claims (1)

[Scope of utility model registration request] A lift plate that is provided in a disc player main body so as to be able to rise and fall freely, supports a disc inserted into the disc player main body at an upper movement limit position, and places the disc on a platter by lowering to a lower movement limit position. a gear mechanism that transmits the power of the lifting motor to the lift plate; and a gear mechanism that is provided in the gear mechanism so as to be able to engage and disengage, and when disconnected, cuts off the power transmission path between the lifting motor and the gear mechanism. It has a switching gear, a solenoid connected to the power supply of the disc player main body, and a plunger connected to the support base of the switching gear, and the switching gear is normally in a meshed state, and when the power is cut off, the switching gear is turned off. A disk elevating device for a disk player, comprising: a plunger solenoid mechanism for setting the disengaged state;