JPS5938902A - Rotating disk 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 a rotating disc device VC such as a turntable used for playing records, and in particular, as a rotating disc device VC, the playing position thereof is not fixed to a horizontal rc. , stand up,
This invention relates to a rotating disk device configured by fixing a rotating disk and a rubber sheet in a non-contact manner, taking into account the possibility of tilting diagonally.

Structure of a conventional example and its problems First, the structure of a conventional rotating disk device will be explained with reference to FIG. Same figure FCj? (1) is a rotating disk made of aluminum, resin, etc., and in order to fix it to the rotary shaft (2), the center part is a receptacle into which the rotating shaft f2>VC is press-fitted. Base +31 Fixed with VC screws (4).

(This is a rubber sheet for stably mounting a VC record on a 51 hall record. Under normal use, the rotating disc is placed horizontally at 4.
Ji? Since the rubber sheet (51) does not need to be particularly glued to the surface of the rotating disk (1), and the rotating disk (1) and the rubber sheet (5) are combined together, the rubber sheet (51) can be used for dynamic fishing. It's not really necessary to get a match.

However, in recent years, this type of rotating disc device has been adapted to be played in a vertical position, regardless of whether it is used indoors or outdoors.
The rubber sheet (5) is often used diagonally, and for this reason, the rubber sheet (5) is attached to the rotating disk by using adhesive. At the outer periphery of (1), is it possible to remove the key points for unbalance correction and achieve dynamic balance? I was measuring.

The work of gluing and fixing the rubber sheet (5) to the rotating disk (1) described above poses the following problems in mass production. arise.

(a) If you use a non-toxic adhesive as an adhesive, it will be difficult to position the rubber sheet (5) on the rotating disk (1), making it difficult to position the rubber sheet (5) correctly.
If σn is fixed without , then center deflection t will occur at the inner or outer peripheral edge τ of the rotating disk tll, which will impair the quality.

(b) If a reverse VC1 slow-drying adhesive is used, curing time will be lost, which will hinder mass production.

(c) Regardless of whether the adhesive is quick-drying or slow-drying, it must be applied to the entire surface of the disc (1) every 11 times.
To avoid uneven coating, use a rubber sheet (
5111C It is easy to create unevenness and vibration noise, and the quality is impaired.

Purpose of the Invention The present invention solves these conventional problems, and uses a quick-drying adhesive to increase productivity and performance while also allowing accurate l/c bonding between the rotating disk and the rubber sheet. To provide a high-quality rotating circle masquerade which can be positioned without core run-out and can be fixed with fingertips so as to prevent run-out.

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention fully connects a rotating disk to a rotating shaft so as to be able to rotate integrally with the rotating disk, and a plurality of outer circumferential through-holes are coated with gold film at a plurality of locations near the outer periphery of the rotating disk, and the rotating disk is provided with gold-plated through-holes at a plurality of locations near the outer periphery of the rotating disk. Inner periphery through holes are provided at a plurality of locations near the inner periphery of the plate, and an open position between the inner periphery of the rotating disk and the outer periphery hole on the surface of the rotating disk, and an opening position between the inner periphery of the rotating disk and the inner periphery of the surface of the rotating disk are provided. The opening position of the circumferential hole and the hole
, a concentric surface outer circumferential groove and a surface inner circumferential groove 2 are provided,
The rotating disk thus configured with V′c is provided with an outer circumferential protrusion and an inner circumferential protrusion that fit into the outer circumferential through hole and the inner circumferential through hole, respectively, and the outer circumferential groove on the surface and the inner circumferential groove on the surface. Attaching a rubber sheet with an outer periphery current protrusion and an inner periphery annular protrusion that fit into each of the grooves t''L, and the rubber sheet fitted into each of the outer periphery through hole and the inner periphery through hole of the rotating disk. A complete rotating disk device characterized in that the rotating disk and the impregnated sheet are adhesively fixed by dropping zelkova shavings gold onto the fitting portions of the outer circumferential protruding portion and the inner circumferential protruding portion. It is something to do.

DESCRIPTION OF EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS. 2 to 4. In these drawings, the same members as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.

As best shown in FIG. 3, the rotary disk (1) has a plurality of (8 in this embodiment) outer periphery y1 through holes (6) spaced at equal intervals in the circumferential direction near its outer periphery. is provided, and a plurality of inner circumferential through holes (7) are provided at equal intervals in the circumferential direction near the inner circumferential edge (end point t). ) on the surface of the rotating disk (1
) and the outer circumferential through hole (61).
2) Forming an annular surface outer circumferential groove (8) with the center as the center, and forming an inner circumferential edge of the rotating disk (1) and the inner circumferential through hole (7).
A concentric surface inner periphery between the surface outer periphery groove (8) and
(Q) It is a sound formation.

On the other hand, IFII K of the rotating disk (rubber seam on which 11rC is mounted) configured as yc is the oil hole (6) on the outer periphery f1.
and the inner peripheral through hole (7) f'1. An outer periphery protrusion 00 and an inner periphery protrusion (11) that fit into the groove fL are provided, as well as a concentric outer periphery protrusion that fits into each of the surface outer periphery grooves (8) and the surface inner periphery tg (91). Department (121
and an outer peripheral annular protrusion a3. In addition, in FIG. 4, for simplification σ), the Ic outer circumferential through hole (6) and the inner circumferential correction through hole 17), that is, the outer circumferential protrusion 0 that fits into these.
0 and the inner peripheral protrusion (11) are shown in the same position,
In fact, it should be understood that VCs are provided separately on both sides.

The rubber sheet (5) is positioned with respect to the rotating disk (1) through the through hole flit, +71 and the groove C11l, (91
A protrusion fIO corresponding to the protrusion fIO.

(Kawa, ＋121. ＋I＠Eliminating the mating process. Precise positioning is mainly done by attaching a comb sheet ( 5
) outer circumferential annular protrusion (121 and inner circumferential annular protrusion iIl)
This is achieved by mating t'L. Therefore, the inner wall surface I of the surface outer circumferential groove (8), the outer wall surface 0 of the surface inner circumferential groove (9), and the annular protrusion θz in contact with these wall surfaces.
, o: 11, special consideration must be given to the machining and finishing of the side wall surfaces so that they form concentric circles with respect to the center of rotation. On the contrary, the through holes (5), (7) and the protrusion 00. (
The material also has the function of adhesive fixing, and does not require much precision in its processing.

After fitting and aligning the rubber sheet (5) to the rotating disk (1), apply the adhesive from the back side of the rotating disk (1) (61, +71 VC injection L).
Te, cholera'l:ff"mushi-)+51 protrusion ace
, (o). It is easier to do this work by placing a rubber seal (51t) on a flat table, placing the rotating disk (1) on top of it, and fixing it with adhesive.The adhesive 01 to be used is Anoacrylate adhesives that have a relatively low viscosity and a high degree of LIM are used as so-called instant adhesives, such as Cyanobond #5000 from Sumikata Chemical Co., Ltd. and Toagosei Kagaku Co., Ltd. Arono Alpha #101 etc. is suitable.In addition, it is necessary to inject all the adhesive *VCU, the minimum required KL', but it is supplied with a slightly large number of 7C, but the adhesive is rubbery) C51' i Lift up the rubber sheet (5)
The space fl of the adhesive holder should be carefully removed so as not to damage the flatness of the surface of the adhesive. 6 through holes (6), C7) are provided with VC.

The hole O is made after peeling and fixing the rubber sheet (5).
.

As a result of the dynamic balance test, the unbalanced part was formed by removing it with a drill etc. It is an fc hole.

Effects of the invention 1: To the above, according to the present invention, VCl is used to adhesively fix a rubber sheet to a rotating disc by simply applying rc adhesive to the entire adhesive surface of each other and curing it. The following effects can be obtained because the '(1) Positioning is easy, core vibration jL is less likely to occur as a finished dimension, and therefore the correction value for dynamic balance can be small.

(2) Since a quick-drying adhesive can be used, productivity can be significantly improved.

I3) Instead of applying the adhesive all over the surface, apply it partially at the through hole and the protruding part No. C that fits into the hole.
There is no surface vibration due to uneven coating, the finished surface can be made flat, and it is economical since fewer adhesives are used.

Of course, the dynamic balance test can be performed in the same way as before, so it can be done not only horizontally, but also vertically, inclinedly, and even inverted horizontally. Or, when used in a rotary disk device such as a portable record glarer, it produces an extremely 4/i1+ effect.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional rotating disk device, Fig. 2 is a sectional view showing an embodiment of the present invention, Fig. 8 is a bottom view of the same, and Fig. 4 is a partial sectional view showing the main parts. It is. (11...Rotation circle F'iE, t'!1...Rotation axis,
f! il...Rubber sheet, ri6]...Outer periphery through hole,
+71...Inner periphery through hole, (8)...Surface outer periphery groove, (
9)...Surface inner circumferential groove, OL...Tato circumferential protrusion, (River...Inner circumferential protrusion, (121...Outer circumferential annular protrusion, 1
1.7 Inner circumference current protrusion, (1 barrel...Adhesive agent Yoshihiro MorikiFigure 1Figure 2Figure 3Figure 4

Claims (1)

[Claims] 1. The rotary disks are connected to each other so that the rotating shaft FfC can rotate integrally, and the rotary disk is provided with holes through the outer periphery at a plurality of locations near the outer periphery of the same rotary disk, and internal through holes are provided at multiple locations near the inner periphery of the rotary disk. A circumferential through hole is provided, and an open position between the outer circumferential edge of the rotating disk and the outer circumference μs on the surface of the rotating disk, and an open position between the inner circumferential edge and the inner circumferential through hole of the inner rotating disk. Noso f'L ('
An outer circumferential protrusion and an inner circumferential groove that fit into the outer circumferential through hole and the inner circumferential through hole are provided on the rotary disk having such an rC configuration, with concentric outer circumferential grooves and inner circumferential grooves on the surface. In addition to the entire surface of the circumferential protrusion, an outer circumferential ψ-shaped protrusion and an inner circumferential annular protrusion '+c are provided that fit into the outer circumferential groove and the inner circumferential groove of the surface, respectively. The fitting portions V between each of the I+6 hole and the inner circumferential through-hole and the outer circumferential protruding portion and the inner circumferential protruding portion of the inserted rubber sheet. A rotating disk device characterized in that the disk and the rubber sheet are in contact with each other.