JPH0242689A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To execute the positioning regulation of a head with a high accuracy by bringing plural sliding small pieces mounted to the head into contact with guide shafts closely respectively. CONSTITUTION:When an optical head 1 is driven by an optical head moving means, the optical head 1 is position-regulated through six sliding small pieces 3 to guide shifts 2 by the energizing force of a leaf spring 4. Consequently, the optical head 1 is positioned with a good accuracy and, simultaneously, moved in a moving direction 5. In such a way, by executing the sliding through the use of six sliding small pieces, the optical head can be six-point-contact- supported closely to two guide shafts. Thus, the optical head can be positioned with a high accuracy.

Description

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

2. Description of the Related Art In recent years, among information recording and reproducing apparatuses, optical disk apparatuses in particular have been attracting attention as large-capacity data file apparatuses capable of non-contact, high-density recording and reproducing, and are being actively developed. The performance of these devices has also improved, and some have already reached the practical stage.

An embodiment of a conventional information recording/reproducing device will be described below with reference to the drawings.

FIG. 4 shows the configuration of a conventional information recording/reproducing device. First, a pair of guide shafts 8 are arranged on both sides of the optical head 7, and a sliding bearing 9 passing through the guide shaft 8 on one side is fixed to the optical head 7. Also, a resin member 10 regulates the rotation direction of the optical head 7 about the sliding bearing 9 with a gap from the other guide shaft 8.
is fixed to the optical head 7.

The operation of the information recording/reproducing apparatus configured as described above will be described below with reference to FIG. 3.

First, when the optical head 7 is driven by an optical head moving means (not shown), the optical head 7 is supported by the guide shaft 8 via the sliding bearing 9, and the resin member 10 allows the optical head 7 to slide. The rotating direction around the dynamic bearing 9 is regulated with a gap between the guide shaft 8 and the guide shaft 8, and the moving direction 11 is regulated using the guide shaft 8 as a guide.

Problems to be Solved by the Invention However, in the conventional support system, positioning is performed only by a sliding bearing that passes through the guide shaft on one side, and this sliding bearing always slides with a gap between it and the guide shaft. are doing. Therefore, there is a problem in that positioning accuracy is lowered and malfunctions occur due to yawing or pitching in the moving direction of the optical head during signal recording/reproduction or access operation.

In view of the above-mentioned problems, the present invention enables high-precision positioning regulation of the head without sacrificing the light weight and low cost, which are the advantages of the conventional support system using sliding bearings, and further reduces the weight even more than before. The present invention provides an information recording and reproducing device that realizes cost reduction and space saving.

Means for Solving the Problems In order to solve the above problems, in the information recording and reproducing apparatus of the present invention, a plurality of sliding pieces are fixed to both sides of the head, and a pair of guides are connected by the plurality of sliding pieces. The optical head is supported and slid by means for holding the shaft, and means is mounted on the head and applies a drag force to the guide surface of the guide shaft via at least one of the plurality of sliding pieces. It is prepared.

According to the present invention, with the above-described configuration, the plurality of sliding pieces mounted on the head each contact the guide shaft without any gaps, thereby making it possible to regulate the positioning of the head with high precision.

Embodiment Hereinafter, an information recording/reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing the configuration of an information recording/reproducing apparatus in an embodiment of the present invention, FIG. 2 is a perspective view showing the shape of a sliding piece, and FIGS. )(C) are a front view, a top view, and a bottom view showing the configuration. In FIGS. 1, 2, and 3 (a), (b), and (C), two guide shafts 2 are arranged on both sides of the optical head 1, and the guide surface of one guide shaft 2 is A total of six sliding pieces 3 are fixed to both sides of the optical head 1 so as to be sandwiched at three points. However, one of the six sliding pieces is connected to the optical head 1 via a plate spring 4 fixed to the optical head 1.
is fixed.

The operation of the information recording/reproducing apparatus of one embodiment configured as described above will be described below with reference to FIGS. 1, 2, and 3(a), (b), and (C).

First, the optical head 1 is driven by an optical head moving means (not shown). At this time, the position of the optical head 1 is restricted to the guide shaft 2 via the six sliding pieces 3 by the biasing force of the leaf spring 4. Therefore, optical head 1
moves in the movement direction 5 while being accurately positioned.

As described above, according to this embodiment, by sliding the optical head using the six sliding pieces, it is possible to support the optical head with no gaps (six points contact) with respect to the two guide shafts. Highly accurate positioning of the optical head becomes possible.

Effects of the Invention As described above, the present invention includes a head for recording, reproducing or erasing information, two guide shafts arranged in parallel on both sides of the head, and a columnar shape having at least one curved surface. The curved surface supports the two guide shafts at a total of six or more points of contact support, and the head has a degree of freedom only in the axial direction of the two guide shafts. a plurality of fixed sliding pieces; means mounted on the head to apply a drag force to the guide surface via at least one sliding piece; and a means for applying a driving force to the head in the axial direction of the guide shaft. By providing means for applying the head, it is possible to perform sliding movement while regulating the positioning of the head with high precision.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an information recording and reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of a sliding piece, FIG. 3(a) is a front view of the whole, and FIG. 3(b) is a top view, Figure 3 (C)
4 is a bottom view, and FIG. 4 is a perspective view of a conventional information recording and reproducing apparatus. 1... Optical head, 2... Guide shaft, 3... Sliding piece, 4... Temporary spring,
5...Moving direction, 6...Sliding direction, 7
...Optical head, 8...Guide shaft, 9...Sliding bearing, 10...Resin member, 11...Movement direction. Name of agent Patent attorney Shigetaka Awano 1 person Figure 1 - Optics 2 - Ki S shi de futo 3 - ff Kankoriki Kan-1- 9-・ 10-1- 11-・- Destination Gakutt 桿rW 陊捌′ あいま Visitation

Claims (1)

[Claims] a head for recording, reproducing, or erasing information; two guide shafts disposed in parallel on both sides of the head; and a columnar shape with at least one curved surface, and the two guide shafts are arranged by the curved surface. a plurality of sliding pieces fixed to both sides of the head so that the head has a degree of freedom only in the axial direction of the two guide shafts; It is characterized by comprising means mounted on the head and applying a drag force to the guide surface via at least one of the sliding pieces, and means applying a driving force to the head in the axial direction of the guide shaft. Information recording and reproducing device.