JP3002067U - Rotating body mounting structure - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a device for a turntable mounting structure suitable for a disc player device, in which runout of the turntable is eliminated and the adhesive does not adversely affect the motor section. [Structure] A shaft 6 of a motor unit 1, a flange 7 press-fitted into the shaft 6, a rotating body 2 assembled on the flange 7, and a fixing means 5 for fixing the rotating body 2 to the flange 7. A rotating body mounting structure characterized by being configured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotating body mounting structure, and more particularly to a turntable mounting structure suitable for a disc player device.

[0002]

[Prior art]

 The manner of mounting the conventional turntable will be described with reference to FIGS. 2 and 3. First, FIG. 2A shows a state of attachment by press fitting, and FIG. 2B shows a state of attachment by an adhesive.

In FIG. 2A, the shaft 16 of the motor unit 11 is press-fitted into a hole 18 formed in the center of a disc-shaped turntable 12.

In the structure shown in FIG. 2B, the adhesive 5 is applied to the shaft 16 of the motor unit 11. Then, the shaft 16 is inserted into the hole 28 of the turntable 22 up to the position where the adhesive 5 is applied. Then, the motor portion 11 is driven, the rotational force is transmitted to the shaft 16, and the turntable 22 also rotates. At this time, the diameter of the hole 28 is formed to be substantially the same as the diameter of the shaft 16.

[0005]

[Problems to be solved by the device]

 However, the two devices shown in the above conventional example have the following drawbacks. They will be described based on FIG. FIG. 3A shows an assembled state of the turntable 12 by press fitting of FIG. 2A, and FIG. 3B shows an assembled state of the turntable 22 using the adhesive of FIG. 2B. is doing.

In the case of mounting by press-fitting as shown in FIG. 3A, there is a drawback that stress is generated in the hole 18 during press-fitting, the mounting surface 14 on which the disk 3 is mounted is affected, and surface wobbling increases. It was

Even when an adhesive is used, as shown in FIG. 3B, since the fitting precision between the shaft 16 and the hole 28 is high, the adhesive 5 does not enter between the hole 28 and the shaft 16. However, there was a drawback that the adhesive strength was weakened.

There is also a problem that the adhesive 5 flows into the bearing portion of the motor portion 11 and adversely affects the motor portion 11.

[0009]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention comprises a motor shaft, a flange press-fitted to the shaft, a rotating body assembled on the flange, and a fixing means for fixing the rotating body to the flange. It is characterized by that. Further, the fixing means is an adhesive. Further, the rotating body is a turntable on which a disk for a record carrier is placed.

[0010]

[Action]

 According to the present invention, since the hole of the rotating body is fitted to the shaft of the motor without stress, the rotating body rotates without the surface wobbling. Further, since the rotating body is fixed to the flange press-fitted to the shaft by a fixing means such as an adhesive, the rotating body can be securely fixed to the shaft.

[0011]

【Example】

 Specific examples of the present invention will be shown below. FIG. 1 is a view showing an embodiment of the present invention. (A) is a state before press-fitting the flange 7, (b) is a state of applying the adhesive 5 on the flange 7, (c) is a turntable 2 on the shaft 6. FIGS. 7A and 7B are views showing the state in which the turntable 2 is assembled before the disposition of FIG.

A disk-shaped flange 7 having a predetermined diameter and a hole formed near the center thereof is press-fitted onto a shaft 6 extending from the motor unit 1. Then, after press-fitting the flange 7 to a predetermined position of the shaft 6, the adhesive 5 as a fixing means is applied to the upper surface of the flange 7. In this state, the hole 8 of the disc-shaped turntable 2 which is a rotating body is inserted into the shaft 6. Then, the turntable 2 is lowered to the position of the flange 7, and the lower surface of the turntable 2 and the upper surface of the flange 7 are adhered and fixed by the adhesive 5 as shown in FIG. 1 (d). In this state, the hole 8 of the turntable 2 fits on the shaft 6 without stress, so that the turntable 2 rotates without wobbling. Therefore, the disk 3, which is a disk for the record carrier on the mounting surface 4, also rotates without surface wobbling. Further, since the turntable 2 is fixed to the flange 7 pressed into the shaft 6 with the adhesive 5, the turntable 2 is also fixed to the shaft 6 reliably.

[0013]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. (1) Since the shaft of the motor, the flange press-fitted to the shaft, the rotating body mounted on the flange, and the fixing means for fixing the rotating body to the flange, the surface of the rotating body There is no shake. (2) Further, since the fixing means is constituted by the adhesive, the rotating body can be easily fixed. Further, since the adhesive is applied on the flange, the adhesive does not flow down to the motor portion and adversely affect the motor. (3) Further, since the rotating body is configured as a turntable on which the disk for the record carrier is placed, the disk rotates with high precision, and therefore the product performance is improved.

[Brief description of drawings]

FIG. 1 is an overall view of an embodiment of the present invention, (a) showing a state before press-fitting of a flange, (b) showing a state of applying an adhesive on the flange, (c) showing It is a figure which shows the state before attaching a turntable to a shaft, (d) is a figure which shows the state which attached the turntable.

2A and 2B are diagrams showing a conventional technique, in which FIG. 2A is a diagram showing a state of attachment by press fitting, and FIG. 2B is a diagram showing a state of attachment by an adhesive.

3A and 3B are views showing a conventional technique, in which FIG. 3A is a view showing a mounting state by press fitting, and FIG. 3B is a view showing a mounting state when an adhesive is used.

[Explanation of symbols]

 1 Motor Part (Motor) 2 Turntable (Rotating Body) 3 Disc 4 Mounting Surface 5 Adhesive (Fixing Means) 6 Shaft 7 Flange 8 Hole

Claims (3)

[Scope of utility model registration request] 1. A rotation comprising a motor shaft, a flange press-fitted into the shaft, a rotating body assembled on the flange, and a fixing means for fixing the rotating body to the flange. Body mounting structure. 2. The mounting structure for a rotating body according to claim 1, wherein the fixing means is an adhesive. 3. The mounting structure for a rotating body according to claim 1, wherein the rotating body is a turntable on which a disk for a record carrier is placed.