JP2000148914A - Information recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an insertion load and to make this device small-sized and thin by providing plural pressing members in the neighborhood of both long sides of a recording medium respectively so that the pressing members are placed mutually before and behind the plane orthogonally crossing an insertion direction. SOLUTION: A 1st holding means for holding a card in a flat manner consists of holding plates 44 that become reference for pressing a card surface and holding it in a flat manner and pressing means 55 for pressing the card against the plates 44 from the rear face side of the facing card. In such a case, the plates 44 are respectively provided in each long side of the card, and plural means 55 are also provided in each long side. The means 55 are pressing rollers 56 that are constructed in a rotatable way in an insertion direction. Four pressing rollers 56 are respectively provided on a straight line in the neighborhood of the long sides of the card. The rollers 56 by two each are pressed against the plate 44 by a flat spring 57. Both ends of the spring 57 that is fixed with a vis at the center are bent in an almost U shape to bring them into contact with both edges of a rotary shaft 58.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus for recording information on a recording medium and / or reproducing information from the recording medium.

[0002]

2. Description of the Related Art Conventionally, there are a magnetic system and an optical system in an information recording / reproducing apparatus. Among them, an optical system has recently attracted attention. As an apparatus for recording / reproducing information using a light beam, there are a CD, a laser disk for rotating a disk-shaped recording medium, an optical card for reciprocating a card-shaped recording medium, and an apparatus using an optical tape. Although these devices are properly used depending on the purpose, optical cards are particularly attracting attention because of their excellent storability and portability. Tracks are formed on the optical card at intervals of several μm, and information is recorded and reproduced by forming spots of several μm between the tracks with a light beam. An information recording / reproducing apparatus that performs recording / reproducing by driving a head in a direction orthogonal to each other and irradiating a light beam onto an optical card while following a light beam in parallel with a track has been devised.

FIG. 8 shows such an information recording / reproducing apparatus.
As shown in the block diagram of FIG.
Is reciprocated linearly along the information track T of the card, and the optical head 2 is moved in a direction crossing the information track T.

FIG. 9 shows a mounting table 1 of such a conventional information recording / reproducing apparatus. A mounting table 1 on which a card C is mounted, along a guide shaft 3 provided in parallel with the X direction.
Are movably supported by bearings or slide bearings (not shown). The mounting table 1 has a stroke slightly longer than the length of the card C in the X direction, and is linearly reciprocated by a drive system (not shown), for example, a belt drive by a voice coil motor or a servomotor.

In order to reliably record and reproduce information, it is necessary that the card C is accurately positioned and does not cause a displacement when the card C reciprocates linearly. Therefore, the mounting table 1 is provided with a holding mechanism for the card C. Is provided. The card C is pressed by the urging member 4 on one long side C1 parallel to the information track T. Thereby, with respect to a reference surface (not shown) of the mounting table 1 formed in parallel with the guide shaft 3,
The other long side facing the long side C1 is held in a pressed state. A pressing member 6 pivotally supported by a shaft 5 is provided on the front side of the long side C1 of the card C, and is urged by a spring 7 in a direction to grip the card C. Similarly, it is gripped by the pressing member 6. The pressing member 6 is not only for holding the card C,
It also plays the role of correcting the warpage of the card C and enabling optical recording and reproduction.

In such an information recording / reproducing apparatus, when performing recording / reproducing of the card C, the optical card C is inserted through an opening 9 provided on the side of the apparatus 8 as shown in FIG. It is transported to the mounting table 1 by a transport system composed of 10 and the like. When the card C is inserted, the mounting table 1
Is locked at the standby position by the lock member 11 shown in FIG. 9 so as not to move. The card C is pushed and inserted between the pressing member 6 and the mounting table 1 while being pressed against the urging member 4 and along the reference plane by the card transport mechanism, and the short-side end C2 of the card C is placed on the mounting table. 1 is pressed against the abutment portion 1a and settled. After the card C is settled, the lock member 11 is removed by a drive system such as a solenoid or a motor (not shown), and the mounting table 1 moves to shift to a recording / reproducing operation.

In the first conventional example, the card C
When the card is inserted into the mounting table 1, a sliding resistance acts between the card and the card C, so that a driving force of the transport system enough to overcome these loads is required. Therefore, a mechanism for automatically opening and closing the holding means of the card C is adopted, and measures are taken to suppress the driving force of the transport system required for releasing the holding during insertion and ejection. However, also in this case, a driving torque for releasing the holding is separately required.

In recent years, the demand for thinning has been particularly severe. In any of the conventional examples, when a large torque is required, the actuator becomes large, which hinders the thinning. Therefore, it is desired to realize a simple holding means that minimizes the card insertion load.

To solve such a problem, an attempt has been made to solve the problem by using a format such as the second conventional example shown in FIG.
FIG. 11 is a perspective view showing the back surface of the mounting table, and FIG. 12 is a plan view. The mounting table 21 is supported and guided by a guide shaft 23 by a slide bearing 22 or the like, and linearly reciprocates in the information track direction by a driving means such as a voice coil motor to record and reproduce information. On the other hand, an optical head (not shown) linearly moves in a direction orthogonal to the information track,
A light beam is positioned on a desired information track.

The mounting table 21 has first holding means for holding the card two-dimensionally, and the card C on a card positioning reference surface formed so that the head moving direction is parallel to the card information track T. A second holding means for setting is provided. The first holding means includes a holding plate 24 for pressing the surface of the card C to hold the card C in a planar manner, and a pressing means 25 for pressing the card C against the holding plate 24 from the back side of the opposing card C. I have. Holding plate 24
Are provided for each long side of the card, and a plurality of pressing means 25 are provided for each long side.

Each pressing means 25 is composed of a cylindrical roller 26 and a leaf spring 27 for urging. The roller 26 is attached to the mounting table 21 so as to be rotatable about a rotation shaft 28. The rotation direction of the rollers 26 is the direction in which the card C is inserted, and four rollers are arranged linearly with respect to the long side of the card C. Roller 26 is a single leaf spring 2
7 presses against the holding plate 24 side. Leaf spring 27
Are screwed at the center, and both ends have elasticity in the thickness direction of the mounting table 21. The ends of the leaf springs 27 at both ends are bent into a substantially U-shape, and abut on both ends of the rotating shaft 28 to apply a biasing force to the roller 26.

With such a plurality of pressing operations, the C card can be accommodated within the thickness of the mounting table 21, so that the apparatus can be made thin and a uniform pressing force can be applied to the card C. Further, by using a common leaf spring 27 for urging the plurality of rollers 26, a simpler and less expensive configuration can be achieved.

Before insertion of the card C, the roller 26
As shown in FIG. When the card C is inserted into the mounting table 21 and the leading end thereof contacts the roller 26,
The roller 26 is lifted upward as shown in FIG.
The card C is rotated while being urged.
As shown in FIG. 15, since the radius R of the roller 26 is configured to be larger than the height t of the card insertion path 29 composed of the mounting table 21 and the holding plate 24, the force P acts on the roller 26. The card C can be smoothly lifted upward without being caught by the rollers 26. Furthermore,
The card C is inserted deep into the mounting table 21, but the rotation resistance of the roller 26 suppresses the sliding resistance with the card surface, so that the insertion resistance is reduced as compared with the related art.

[0014]

However, in general, the resistance acting when inserting the card C is not only generated by the first holding means for holding the card C in a plane, but also by the first holding means shown in FIG. The second holding means 30 for setting the card on a card positioning reference plane formed so that the head movement direction and the card information track T are parallel as shown in FIG.
Also works. Recently, a hybrid card having both functions of an optical card and an IC card has been developed.
As shown in FIG. 12, an IC contact pair 31 for contacting and electrically accessing the IC module is mounted on the mounting table 21.
A model to be mounted on it has also been developed. The contact pair 31 is configured to come into contact with the card C with a predetermined urging force in order to obtain a good electrical contact state, and a resistance force is generated in the process of inserting the card C.

FIG. 16 is a graph in which the vertical axis indicates the resistance and the horizontal axis indicates the position of the leading end of the card C to be inserted. The horizontal axis in FIG. 16 matches the insertion position in FIG. In the conventional example, in the width direction of the card C, since the pressing members on both sides are located at the same position with respect to the insertion direction, when the leading end of the card C enters the position of the roller 26, the running resistance simultaneously acts, Load increase points occur at positions A, C, D, and F. Further, a load increase point is generated at the positions B and F by the stabilizing member forming the second holding means 30, and the load further increases at the positions E and F by the IC contact pair 31. When the load increases at a position where all the elements match, such as the F position, the resistance force partially increases, and in particular, the sliding resistance component is large on the back side of the mounting table 21 such as the F position. , The resistance is at its maximum.
Since the driving source is selected based on the maximum resistance Fb, an efficient method is desired without causing such a partial increase in load.

An object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide a small and thin information recording / reproducing device which reduces insertion load.

[0017]

An information recording / reproducing apparatus according to the present invention for achieving the above object holds a card-shaped information recording medium on a mounting table, and relatively moves the mounting table and the optical head. In the information recording / reproducing apparatus for recording / reproducing information by moving the information recording / reproducing apparatus, the mounting table is provided on a reference plate for pressing one surface of a card, and the recording medium is provided on the other surface of the recording medium, and Card holding means comprising a pressing member for urging the recording medium to the side, and a plurality of the pressing members are respectively provided near both long sides of the recording medium, and each of the pressing members is orthogonal to the insertion direction. It is characterized by being arranged before and after each other with respect to the surface.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is a perspective view of a mounting table,
FIG. 2 is a plan view of the mounting table. The mounting table 41 is supported and guided by a guide shaft 43 by a slide bearing 42 and the like, and linearly reciprocates in the information track direction by a driving means such as a voice coil motor to record and reproduce information. On the other hand, the optical head (not shown) linearly moves in a direction orthogonal to the information track of the card C, and aligns the light beam to a desired information track.

The mounting table 41 has first holding means for holding the card C in a plane, and the card is set on a card positioning reference surface formed so that the head moving direction and the information track are parallel to each other. Second holding means is provided. The first holding means includes a holding plate 44 serving as a reference for pressing the card surface and holding the card in a planar manner, and a pressing means 55 for pressing the card C against the holding plate 44 from the opposite side of the card. . The holding plate 44 is provided for each long side of the card C, and a plurality of pressing means 55 are provided for each long side.

Each pressing means 55 is a roller 56 which is rotatable in the insertion direction.
Are arranged on a straight line in the vicinity of the long side. The rollers 56 are pressed toward the holding plate 44 by one leaf spring 57 two by two. Both ends of the leaf spring 57 screwed at the center are bent in a substantially U-shape and abut on both ends of the rotating shaft 58, and the elastic force of the leaf spring 57 applies a biasing force to the roller 56. .

Before the card C is inserted, the roller 56 is in contact with the holding plate 44. When the card C is inserted into the mounting table 56 and the tip of the card C comes into contact with the roller 56, the roller 56 is lifted upward, and is rotated while being urged against the card C. At this time, the load fluctuation at one point of the pressing means 55 causes a point where the resistance increases in FIG. Thereafter, the sliding resistance between the reference surface and the card and the resistance of the roller 56 due to the rotation act quantitatively.

On the other hand, the setting member 59 constituting the second holding means is a leaf spring having a curved end, and the resistance generated by the setting member 59 is as shown in FIG. Until the spring surface coincides with the end face of the card C, a resistance force for bending the leaf spring acts, and thereafter, a sliding resistance between the leaf spring and the end of the card C acts.

As shown in FIG. 5, an optical recording layer H1 is formed on the front surface of the card C, and recording and reproduction are performed on a hybrid card having an IC chip H2 embedded on the back surface. Is provided with a contact pair 60 for contacting the IC chip H2 and obtaining electrical continuity. At the position corresponding to the IC chip H2, 8
Two holes 61 are provided. Each hole 61 has an elongated slot shape extending in the insertion direction of the card C.

Inside the hole 61, there are provided four contact pairs 60 each composed of eight coil springs having electrical conductivity.
2 is inserted and attached. Contact pair 60
Has one arm shorted to a flexible electrical cable and the other arm extends with its tip folded back. In the process of insertion, when the tip of the card C contacts the contact pair 60, a resistance acts to deflect the contact pair 60 downward, and thereafter, a sliding resistance between the card C and the contact pair 60 acts. Since the contact pairs 60 are formed in two stages with respect to the insertion direction of the card C, the resistance is as shown in FIG.

Accordingly, the load resistance when the card C is inserted into the mounting table 41 is the sum of the resistances of the pressing means 55, the settling member 59, and the IC contact pair 60. In order to reduce the maximum resistance and suppress the required power torque, as shown in FIG. 2, the positions of the respective elements are arranged slightly before and after the insertion direction as shown in A to L. With this configuration,
The resistance will be smoothed as shown in FIG. As compared with the maximum load Fa of the conventional example shown in FIG. 16, the maximum load Fb of the present embodiment can be made smaller because the resistance increase points do not overlap.

[0026]

As described above, in the information recording / reproducing apparatus according to the present invention, the load on the mounting table can be reduced, and the required driving source can be reduced, so that a further reduction in size and thickness can be realized. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a mounting table according to a first embodiment.

FIG. 2 is a plan view of a mounting table according to the first embodiment.

FIG. 3 is a graph showing a resistance force by a pressing member.

FIG. 4 is a graph showing a resistance force by a setting member.

FIG. 5 is a plan view of the hybrid card.

FIG. 6 is a graph of resistance force by an IC contact pair.

FIG. 7 is a graph showing a resistance force when a card is inserted in the first embodiment.

FIG. 8 is a configuration diagram of a conventional card transport mechanism.

FIG. 9 is a perspective view of a mounting table of the first conventional example.

FIG. 10 is a side view of a first conventional device.

FIG. 11 is a rear perspective view of a mounting table of a second conventional example.

FIG. 12 is a plan view of a mounting table of a second conventional example.

FIG. 13 is an explanatory diagram of a holding means during card placement according to the second embodiment.

FIG. 14 is an explanatory diagram of a holding means during card placement according to a second conventional example.

FIG. 15 is an explanatory diagram of a roller unit during card placement according to a second conventional example.

FIG. 16 is a graph showing resistance force when a card is inserted in the second conventional example.

[Explanation of symbols]

 41 mounting table 44 holding plate 55 pressing means 56 pressing roller 57 leaf spring 59 setting member 60 IC contact pair C card

Claims (3)

[Claims] An information recording / reproducing apparatus for recording / reproducing information by holding a card-shaped information recording medium on a mounting table and relatively moving the mounting table and an optical head, wherein the mounting table is a card A reference plate for pressing one side of
Card holding means comprising a pressing member provided on the other surface side of the recording medium and urging the recording medium toward the reference plate side, wherein the pressing member is disposed near both long sides of the recording medium. An information recording / reproducing apparatus, wherein a plurality of pressing members are provided, and the pressing members are arranged before and after each other with respect to a plane orthogonal to the insertion direction. 2. A contact pair for accessing a contact type IC module is provided on the mounting table, and the contact pair and the pressing member are moved back and forth with respect to a plane orthogonal to an insertion direction. The information recording / reproducing apparatus according to claim 1, wherein the information recording / reproducing apparatus is arranged in a manner to be arranged. 3. The mounting table according to claim 1, further comprising: a reference surface for positioning the recording medium by abutting one long side thereof, and a setting member for urging the recording medium toward the reference surface. The information recording / reproducing apparatus according to claim 2, wherein the stabilizing member is disposed before and after each other with respect to a plane orthogonal to the insertion direction with the pressing member and / or the contact pair.