JPS6292181A - Information recording and reproducing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an information recording/reproducing device for recording and/or reproducing information on an information recording medium such as a card, sheet, or disk. .

(Prior Art) Conventionally, in this type of information recording/reproducing apparatus, a feeding mechanism shown in FIG. 3, for example, has been used to move a recording or reproducing head relative to an information recording medium.

That is, above the disk-shaped information recording medium 1, a frame 2 is provided.
A relatively lightweight head body 4 such as a magnetic head is movably inserted into a guide shaft 3 disposed in A cylindrical engagement member 6 fixed to the end surface of the head body 4 is engaged with a thread groove in the upper part of the lead screw 5. A drive motor 7 such as a step motor connected to the lead screw 5 By rotating the head body 4, the head body 4 can be reciprocated in the a-a' force direction via the engaging member 6 engaged with the thread groove of the lead screw 5, and information can be recorded or reproduced. The engagement member 6 engaged with the thread groove on the upper part of the lead screw 5 also has the function of supporting the load of the head body 4.

However, when a feed mechanism having a configuration similar to the above-described feed mechanism is used for a relatively heavy head body (not shown) such as an optical head, the engaging member 6 has the rigidity to support the load of the head body. In order to engage the upper thread groove of the lead screw 5 and support the load of the head body, the diameter of the engaging member 6 is increased, and the lead screw 5
It is also necessary to increase the pitch interval of the thread grooves. Therefore, the drive motor 7 for rotating the lead screw 5 requires a highly accurate drive motor 7 with a small minimum step angle, which has the drawback of increasing costs.

Further, the load of the head body is concentrated only on the contact surface between the engagement member 6 and the upper thread groove of the lead screw 5, which may impede smooth movement of the head body.

(Problems to be Solved by the Invention) The present invention has been made for the purpose of solving the problems of the above-mentioned conventional example,
It is an object of the present invention to provide an information recording and reproducing device that can smoothly move the head at low cost even when using a relatively heavy recording or reproducing head such as an optical head.

(Means for Solving the Problems) As a means for solving the problems described above, the present invention provides an information storage system for recording or reproducing information by moving a recording or reproducing head with respect to an information recording medium using a lead screw. In the recording/reproducing device, the recording or reproducing head includes an engaging member that engages with a thread groove at the bottom of the lead screw, and a roller that contacts the top of the lead screw and rotates as the lead screw rotates. The gist is a configuration in which a support member is provided.

(Example) Hereinafter, the present invention will be explained in detail with reference to an illustrated example.

FIG. 1 is a perspective view showing the main parts of an information recording/reproducing apparatus according to the present invention. In this figure, reference numeral 10 denotes a relatively heavy head body such as an optical head at the bottom.
A guide shaft 11 is movably inserted into a hole 10b formed substantially parallel to one side surface 10a of 0. A support member 13 having a cylindrical roller 12 rotatably mounted on the other opposing side surface 10c is attached with a screw 14, and a resilient cylindrical engagement member 1 is attached below the support member 13.
5 is fixed. 16 is a lead screw;
The lead screw 16 is attached to the side surface 1 of the head body 10.
A roller 12 provided approximately parallel to 0c and on the support member 13
and the engaging member 15 so as to be in contact with each other. At this time, the cylindrical engagement member 15 is engaged with the thread groove at the bottom of the lead screw 16, and the lead screw 16 is
The support member 13 is rotated so that its rotation direction corresponds to the screwing direction of the support member 13.
The head body 10 is placed on the lead screw 16 by contacting the roller 12 provided on the
is supported (see Figure 2).

17 is a card-shaped information recording medium such as an optical card, and the information recording medium 17 is sandwiched between drive rollers 18.
It is arranged below the head main body 10. Reference numeral 19 denotes a drive motor such as a step motor for rotating the lead screw 16.

The information recording and reproducing apparatus according to the present invention is configured as described above, and first, when recording or reproducing information on the information recording medium 17 (A-A' force direction longitudinal direction), a head having a recording and reproducing head is used. Information can be recorded or reproduced by fixing the main body 10 and rotating the drive roller 18 to move the information recording medium 17 to a predetermined recording or reproduction position in the AA′ direction. Next, when recording or reproducing information in the B-B' direction perpendicular to the A-A' force direction of the information recording medium 17, when the drive motor 19 is rotated by a predetermined feed amount, the connected lead screw 16 also rotates by a predetermined feed amount. When the lead screw 16 rotates, the cylindrical engagement member 15 engaged with the thread groove at the bottom of the lead screw 16 moves integrally with the head body 10 to a predetermined recording or reproducing position in the B-B' direction. You can record or play back information. At this time, the load of the head body 10 having the recording/reproducing head is transferred to the guide shaft 11 movably inserted into the head body 10.
Since it is applied to the roller 12 that is in contact with the lead screw 16, it is not applied to the engaging member 15.

The load of the main body 10 is not applied. In addition, since the engaging member 15 has elasticity, the engaging member 15 is always engaged with the thread groove at the bottom of the lead screw 16.

Furthermore, the roller 1 that comes into contact with the upper part of the lead screw 16
2 is rotatable and is arranged so that its rotation direction corresponds to the thread white direction of the lead screw 16.
The frictional resistance when the head body 10 moves in the 1-A direction can be reduced.

(Effects of the Invention) As explained above, the information recording and reproducing device according to the present invention has the following features:
An engaging member that engages with a thread groove at the bottom of the lead screw to move the head main body, with a configuration in which the roller of the support member provided on the recording or reproducing head comes into contact with the top of the lead screw to support the load of the head main body. This prevents the load from being applied to the head body.

Therefore, even when using a heavy recording or reproducing head, there is no need to increase the diameter of the engaging member and the pitch interval of the thread groove of the lead screw.
With a drive motor that rotates -0, it is possible to perform smooth feeding at a low system speed without using a high-precision drive motor with a small minimum step angle.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the main parts of the head feeding mechanism of the information recording/reproducing apparatus according to the present invention, FIG. FIG. 3 is a perspective view showing the main parts of a conventional head feeding mechanism. 10...Head body. 12...roller, 13...
Supporting member, 15...Engaging member, 16...Lead screen, i-1, 17...Information recording medium, 19...Drive motor representative Patent attorney Minoru Yamashita 1 Figure 1 2 Figure 3 01 To 1 1 1 σ ``-Itozoki Ne City j-1 3 1 脣 (Spontaneous) 1986
December 24] 1 41f, :1 Agency Director Michibu Uga 1,・11 PI display! llI Junsho 60-229896 No. 2 Name of the invention Information recording and reproducing device 3-? +Ii Person doing ifi/Relationship with the case Patent applicant name (100) Canon Co., Ltd. name
Canon Electronics Co., Ltd. 4 Agent address Toranomon 4o Mori Building, 5-13-1 Toranomon, Minato-ku, Tokyo Figure 2 6 of the drawing Contents of extraction As shown in the attached sheet

Claims (1)

[Scope of Claims] 1) In an information recording/reproducing apparatus for recording or reproducing information by moving a recording or reproducing head with respect to an information recording medium using a lead screw, the bottom portion of the lead screw is attached to the recording or reproducing head. an engaging member that engages with the thread groove of the lead screw;
An information recording/reproducing device comprising: a support member having a roller that rotates as the lead screw rotates. 2) The information recording/reproducing device according to claim 1, wherein the engaging member has elasticity.