JPS63298750A - Disk player - Google Patents

Abstract

PURPOSE:To ensure the clamping of a disk by forming a small diameter part at the center in the axial center direction of a loading roller and constructing a clamper in a large diameter so that the rotating zone of the clamper may be located at this small diameter part. CONSTITUTION:Each loading roller 1, 2 is a straight roller, but has small diameter parts 1A, 2A at the center and one part of the clamper 4 fitted freely rotatably to a clamp arm 3 is located in the zone of this small diameter part 1A, 2A. The clamper 4 can clamp a disk D together with the table 6 fitted to the spindle shaft 5A of a spindle motor 5 without being obstructed by loading rollers 1, 2. The diameter of the clamper 4 is made larger corresponding to this small diameter part 1A, 2A. A clamped disk can thus keep a stabilized state.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a disc player, and more specifically,
A flash on a disc player that makes the clamping on the playback disc more secure.

[Conventional technology]

Many in-vehicle CD players, also known as optical discs, have an automatic CD loading mechanism.
In addition, in the case of in-vehicle CD players, restrictions on the occupied surface M (size) are extremely strict, and everything has to be miniaturized, especially
The clamper, which functions as a stabilizer, is also made smaller in diameter so that the CD can be clamped to the spindle shaft and rotated integrally with the spindle shaft.

[Problems to be solved by the invention]

In the above-mentioned optical disk player, since the disk is rotated at high speed, it is necessary to clamp the disk integrally with the spindle shaft, and it is desirable to increase the diameter of the clamper that directly transmits the clamping force to the disk. Since the clamper is located so close to the loading roller that it almost touches it, it was considered impossible to increase the diameter of the clamper.

[Means to solve the problem]

Therefore, the purpose of this invention is to make it possible to clamp the disk in a stable state.The diameter of the clamper, which had been restricted from increasing its diameter, has been increased to ensure reliable clamping of the disk. A small diameter portion is formed in the axial center of the loading roller, and the clamper is configured to have a large diameter so that the rotation area of the clamper is located in this small diameter portion.

【Example】

Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. In FIG. 0, reference numerals 1 and 2 indicate loading rollers, and each loading roller 1.2 is a straight roller, but has a small diameter portion IA in the center. A part of the clamper 4, which is rotatably attached to the clamp arm 3, is located in the area of the small diameter portions 1A and 2^, and the clamper 4 is attached to the spindle shaft 5^ of the spindle motor 5. Together with the table 6, which is provided with a table 6, the disk D can be clamped without being hindered by the loading rollers 1 and 2. The small diameter portions IA and 2A of the loading rollers 1 and 2 may be stepped portions (see Fig. 1) or may have an hourglass-shaped curve (Fig. 1).
(Fig. 3), a tapered one (Fig. 4), etc. are used, and in the case of the small diameter portion shown in Figs. This gives flexibility in the loading position. Further, in the case of a type in which the loading rollers 1 and 2 have different diameters, a small diameter portion 1A is provided with only the loading roller 1 having a large diameter, for example, the loading roller 1. By using loading rollers 1 and 2 with different diameters, it is possible to suppress the movement of the disc D (see Figure 6) that tends to occur when the diameters are the same, and to allow loading while in a horizontal state (see Figure 5). This functions to control the attitude of the disk D.

【Effect of the invention】

As is clear from the above description, according to the optical disk player of the present invention, the loading roller has a small diameter section formed in the center, and the diameter of the clamper is increased to correspond to this small diameter section. The thus-obtained disk can maintain a stable state, and furthermore, it is possible to suppress the increase in the size of the equipment due to the increase in the size of the clamper.

[Brief explanation of the drawing]

The attached drawings show the main parts of the disc player of the present invention,
1 is a plan view, FIG. 2 is a side view of the same, FIGS. 3 and 4 are plan views of a loading roller according to another embodiment, FIG. 5 is a side view of another embodiment, and FIG. It is a side view of a conventional example. 1.2...Loading roller, IA, 2A...
Small diameter part, 3...clamp arm, 4... clamper,
5...Spindle motor, 5A...Spindle shaft,
6...Table Patent Applicant Pioneer Co., Ltd. Agent Patent Attorney Nobu Kobashi Jundo Patent Attorney Susumu Murai Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] (1) In a disk player configured with a loading roller and a clamper arranged close to each other, a small diameter part is formed in the axial center of the loading roller, and the rotation area of the clamper is in this small diameter part. A disc player characterized in that the clamper is configured to have a large diameter so that the clamper is located.