JPH075577Y2 - Optical information recording / reproducing device - Google Patents

Description

The present invention relates to an optical information recording / reproducing apparatus using an optical card.

(Prior Art) Conventionally, in an optical information recording / reproducing apparatus using an optical card, as shown in, for example, Japanese Patent Laid-Open No. 61-264562, a holder on which an optical card is mounted can be linearly reciprocated. And the endless belt is arranged along the moving part of the holding table, the holding table is fixed to the upper side part of the belt, and the counterweight is attached to the lower side part of the belt to rotate forward and backward. The drive motor rotates the belt to linearly reciprocate the holding table on which the optical card is placed with respect to the optical information recording / reproducing head, thereby recording / reproducing information on / from the optical card. .

At this time, the holding base and the counterweight make linear reciprocating movements in parallel and opposite directions, and the vibration generated when the linear reciprocating movement is reversed is reduced by the holding base and counterweight canceling each other's shocks when they are reversed. I am trying to do it.

(Problems to be solved by the invention) According to the above device, the addition of the counterweight increases the load on the drive unit, increases the output of the drive motor and increases the power consumption, and also increases the weight and cost of the device. Is an issue.

An object of the present invention is to solve the problems such as increased output and increased power consumption, which are inevitable due to an increase in the weight of the device and an increase in the load of the driving unit.

(Means for Solving the Problem) In the optical information recording / reproducing apparatus according to claim 1, recording / reproducing is performed by linearly reciprocating a holding table on which an optical card is mounted with respect to an optical information recording / reproducing head. In the optical information recording / reproducing apparatus for performing, a linear motor including a yoke provided in the moving direction of the holding table and a drive coil moving along the yoke, and provided between the linear motor and the holding table, A drive coil of the linear motor is connected by a movable table, and an interlocking mechanism that moves the holding table in a direction opposite to the moving direction of the linear motor together with the reciprocating motion of the linear motor, and a speed sensor that moves together with the holding table are provided. The weights of the holding table and the speed sensor and the weights of the drive coil and the movable table are almost equal.

The optical information recording / reproducing apparatus according to claim 2 is an optical information recording / reproducing apparatus for performing recording / reproducing by linearly reciprocating a holding table on which an optical card is mounted with respect to an optical information recording / reproducing head. A linear motor that comprises a yoke provided in the moving direction of the holding table and a drive coil that moves along the yoke, and a linear motor that moves the holding table along with the reciprocating movement of the driving coil; and a linear motor that moves in conjunction with the movement of the holding table. Is provided between the speed sensor and the holding table. The speed sensor is connected by a movable table, and the speed sensor moves in a direction opposite to the moving direction of the holding table as the movable table reciprocates. Equipped with an interlocking mechanism to
The weight distribution of the holding base and the drive coil is substantially equal to the weight distribution of the speed sensor and the movable base.

(Operation) In the optical information recording / reproducing apparatus according to the first aspect, since the weights of the holding table and the speed sensor and the weights of the driving coil and the movable table have substantially equal weight distribution, the weight of the motion system is intentionally increased. There is no vibration when reversing the linear motion without using the method.

In the optical information recording / reproducing apparatus according to claim 2, since the weight of the holding table and the driving coil and the weight of the speed sensor and the movable table have substantially equal weight distribution, a method of intentionally increasing the weight of the motion system is used. Needless to say, there is no vibration when the linear motion is reversed.

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

In FIGS. 1 and 2, 1 is an optical card (hereinafter referred to as an optical card) which is an optical information recording medium, 2 is a holding table on which the optical card 1 is mounted, and the holding table 2 is shown in the drawing. Not supported by the guide shafts 3 on both sides fixed in parallel to the chassis, the linear reciprocating motion is performed.

A linear motor 5 is provided with a linear yoke 6 parallel to the guide shaft 3, that is, in the moving direction of the holding table 2. The yoke 6 has parallel side portions 6a and a central side portion 6b.
Magnets 7 are attached along the inner sides of both side portions 6a. A drive coil 8 is movably fitted to the central side portion 6b of the yoke 6, and a movable table 9 is provided on the drive coil 8.
The movable base 9 is supported by guide shafts 10 on both sides which are arranged and fixed in parallel with the guide shaft 3 and linearly reciprocates.

An interlocking mechanism 12 is provided between the holding table 2 and the linear motor 5. In this interlocking mechanism 12, pulleys 14 supported by shafts 13 are arranged in the front and rear portions between the guide shafts 3 on both sides, and an endless timing belt 15 as a transmission means is stretched between the front and rear pulleys 14. The upper side of the belt 15 is fixed to the holding base 2, and the lower side of the belt 15 is fixed to the movable base 9. Then, together with the reciprocating motion of the movable table 9, the holding table 2 is moved in the direction opposite to the moving direction of the movable table 9.
Is designed to move.

A speed detecting mechanism 17 for speed control of the linear motor 5 is provided on one side of the holding table 2. In this speed detecting mechanism 17, a yoke 18 is provided in parallel along the guide shaft 3, a magnet 19 is attached along the inside of an outer side portion 18a of the yoke 18, and an inner side portion of the yoke 18 is provided. A speed sensor 20 composed of a speed detection coil attached to the holding table 2 is movably fitted to 18b.

The total weight of the optical card 1, the holding table 2 and the speed sensor 20 located on the upper side of the belt 15, and the drive coil 8 and the movable table 9 located on the lower side of the belt 15.
Is set to be almost equal to the total weight of. That is, weights that are approximately equal to the respective motion systems that move in the opposite directions of the interlocking mechanism 12 are arranged.

An optical information recording / reproducing head (hereinafter referred to as an optical head) 21 is arranged above the holding table 2, and the optical head 21 is supported by a guide shaft 22 orthogonal to the guide shaft 3 so as to be movable back and forth. ing.

Then, when the movable table 9 moves to one side together with the drive coil 8 by the driving of the linear motor 5, the belt 15 rotates between the pulleys 14 and the holding table 2 on which the optical card 1 is mounted and the speed sensor 20 are moved. Move to the other side and insert the optical card 1 into the optical head 21.
Recording and playback are performed by making a linear reciprocating motion with respect to.

At this time, since the weights of the holding table 2 and the speed sensor 20 are almost equal to the weights of the drive coil 8 and the movable table 9, the linear movement of the linear motion can be achieved without using the method of intentionally increasing the weight of the motion system. There is no vibration when reversing. Therefore,
Since it is not necessary to increase the weight of the motion system, the driving load can be reduced.

Next, the embodiment shown in FIG. 3 shows another example of the interlocking mechanism 12. The interlocking mechanism 12 is provided with racks 24, 25 on the lower surface of the holding table 2 and the upper surface of the movable table 9, and the racks 24, 25 are provided.
A gear 27, which is mounted via a support shaft 26, is meshed with the holding base 2 and the movable base 9 so as to make linear movements in opposite directions.

Also in this embodiment, similar effects can be obtained by appropriately performing weight distribution, as described above.

In each of the above-described embodiments, the holding table 2 and the speed sensor 20
And the weights of the drive coil 8 and the movable base 9 are almost equal, whereas the weights of the holding base 2 and the drive coil 8, the speed sensor 20 and the movable base 9 are substantially equal.
Even if the weight distribution is such that the weight distribution is almost equal, the same effect can be obtained if the weight distribution is appropriate.

(Effect of the Invention) According to the optical information recording / reproducing apparatus of the first aspect, since the weights of the holding table and the speed sensor and the weights of the driving coil and the movable table are almost equal to each other, the weight of the motion system is large. It is possible to obtain an optical information recording / reproducing device which does not vibrate at the time of reversal of the linear motion without using the method of intentionally increasing.

According to the optical information recording / reproducing apparatus of the second aspect, since the weights of the holding table and the driving coil and the weights of the speed sensor and the movable table are almost equal in weight distribution, the weight of the motion system is intentionally increased. It is possible to obtain an optical information recording / reproducing apparatus which does not vibrate when the linear motion is reversed, without using.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the device of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a partial side view showing another embodiment. 1 ... Optical card, 2 ... holding base, 5 ... linear motor, 6 ... yoke, 8 ... driving coil, 9 ... movable base,
12 ... interlocking mechanism, 20 ... speed sensor.

Claims (2)

[Scope of utility model registration request] 1. An optical information recording / reproducing apparatus for performing recording / reproduction by linearly reciprocating a holding table on which an optical card is placed with respect to an optical information recording / reproducing head, wherein the holding table is provided in a moving direction of the holding table. Provided between the linear motor and the holding table. The linear motor is provided between the linear motor and the holding table. The driving coil of the linear motor is connected by the movable table to reciprocate the linear motor. An interlocking mechanism that moves the holding table in a direction opposite to the moving direction of the linear motor along with the movement, and a speed sensor that moves together with the holding table are provided. The weight of the holding table and the speed sensor, the driving coil, and the movable table An optical information recording / reproducing apparatus characterized in that the weight distribution is substantially equal to the weight distribution. 2. An optical information recording / reproducing apparatus for performing recording / reproducing by linearly reciprocating a holding table on which an optical card is mounted with respect to an optical information recording / reproducing head, wherein the holding table is provided in a moving direction of the holding table. A linear motor configured to move the holding table together with the reciprocating movement of the driving coil, a speed sensor moving in conjunction with the movement of the holding table, and a speed sensor And a holding table, the speed sensor is connected to the speed table by a movable table, and an interlocking mechanism that moves the speed sensor in a direction opposite to the moving direction of the holding table along with the reciprocating motion of the movable table is provided. An optical information recording / reproducing apparatus, characterized in that the weights of the holding base and the drive coil and the weights of the speed sensor and the movable base are substantially equal.