JPH0741756U - Spindle motor - Google Patents

Abstract

(57) [Abstract] [Purpose] In a spindle motor used for various audio equipment, the action of adsorbing a CD clamper to fix the CD and the play of the turntable and the CD by sucking the turntable to the metal chassis side. It is an object of the present invention to realize a spindle motor equipped with an inexpensive turntable that simultaneously realizes the function of preventing the above. [Structure] A resin turntable 8 and a magnet 9 are integrally molded to form one turntable, and the magnet 9 is planarly magnetized and then attached to a motor 13. Since the magnet 9 is flat magnetized, the CD clamper 10
Side and the resin material of the turntable can generate a magnetic force in both directions of the metal chassis 12 side, and the target CD clamper 10 is fixed to the turntable 8 by fixing the CD 11 and the metal of the turntable 8 is fixed. Turntable and CD by suction to the chassis 12 side
The rattling prevention of 11 can be realized.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a spindle motor used in audio equipment.

[0002]

[Prior art]

 In recent years, there has been a strong demand for lower prices of spindle motors, especially spindle motors for CD players, and high reliability.

A conventional spindle motor will be described below with reference to the drawings. FIG. 4 shows an example of a turntable sectional view of a conventional CD spindle motor and a mounting structure diagram for actual use.

In FIG. 4, reference numeral 1 is a metal turntable, and 2 is a magnet for adsorbing a clamper for fixing a CD. Reference numeral 3 is a clamper for fixing the CD, which is made of a magnetic steel plate or a resin integrally molded with the magnetic steel plate. Reference numeral 4 is a CD, 5 is a magnet that attracts the turntable to the metal chassis side to prevent rattling of the turntable and CD, and is fixed to 1 by magnetic attraction or magnetic attraction. 6 is a metal chassis, and 7 is a motor.

As described above, the CD spindle motor is constructed and used.

[0006]

[Problems to be solved by the device]

 However, in the above-mentioned conventional configuration, two magnets are used because the turntable is made of metal and the table is made of metal so that the attraction of the CD clamper and the attraction of the table to the metal chassis side cannot be achieved with one magnet. There is a problem that there are many factors that increase costs, such as the need to do so.

Further, there is a problem in that the fixing of the magnet has to rely on adhesion or magnetic attraction, resulting in an increase in the number of processing steps and lack of reliability of fixing.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide an inexpensive and highly reliable spindle motor.

[0009]

[Means for Solving the Problems]

 In order to achieve this purpose, the spindle motor of the present invention uses a base of the turntable as an inexpensive resin material and integrally molds one molded magnet with the base resin, or fixes or melts the base resin. Fixed or magnetically attracted to a magnetic steel plate integrally molded with the base resin.

[0010]

[Action]

 With this configuration, an inexpensive turntable that simultaneously realizes the function of adsorbing the CD clamper to fix the CD and the function of sucking the turntable to the metal chassis side to prevent rattling of the turntable and the CD is provided. A spindle motor can be obtained.

[0011]

【Example】

 Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of a turntable according to an embodiment of the present invention and an actual mounting structure diagram. In FIG. 1, 8 is a resin turntable, 9 is a magnet, 10 is a CD clamper, 11 is a CD, 12 is a metal chassis, and 13 is a motor.

The operation of the spindle motor configured as described above will be described. The resin turntable 8 and the magnet 9 are integrally molded to form a single turntable. Further, the magnet 9 is planarly magnetized and attached to the motor 13 in this state. Since the magnet 9 is flatly magnetized, it can pass through the CD clamper 10 side and the resin material of the turntable to generate a magnetic force in both directions of the metal chassis 12 side, and the turntable of the target CD clamper 10 can be generated. It is possible to fix the CD 11 by suction on the bull 8 and prevent rattling of the turntable and CD 11 by suction on the metal chassis 12 side of the turntable 8.

Second Embodiment A second embodiment of the present invention will be described below with reference to the drawings.

2 is different from the configuration of FIG. 1 in that the magnet 15 is fixed by melting the resin material that is the base of the resin turntable 14, and achieves the same purpose as in the first embodiment. it can.

Third Embodiment A third embodiment of the present invention will be described below with reference to the drawings.

3 is different from that of FIG. 1 in that the resin turntable 20 and the magnetic steel plate 22 are integrally formed, and the magnet 21 magnetized to the magnetic steel plate is fixed by magnetic attraction. By optimizing the shape of the magnetic steel sheet, the same purpose as in Example 1 can be realized.

[0018]

[Effect of device]

 As described above, in the spindle motor of the present invention, the turntable base is made of an inexpensive resin material, and one molded magnet is integrally molded and fixed with the base resin, or the base resin is melted and fixed, or By magnetically adsorbing to a magnetic steel plate integrally molded with the base resin, the action of adsorbing the CD clamper to fix the CD and the turntable to the metal chassis side to prevent the rattling of the turntable and CD It is possible to realize an excellent spindle motor equipped with an inexpensive turntable that simultaneously achieves the above action.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a turntable according to a first embodiment of the present invention and an actual mounting structure diagram.

FIG. 2 is a sectional view of a turntable according to a second embodiment of the present invention and a mounting structure diagram for actual use.

FIG. 3 is a sectional view of a turntable according to a third embodiment of the present invention and an actual mounting structure diagram.

[Figure 4] Conventional turntable cross-sectional view and actual mounting structure diagram

[Explanation of symbols]

 1 metal turntable 2,5,9,15,21 magnet 3,10,16,23 CD clamper 4,11,17,24 CD 6,12,18,25 metal chassis 7,13,19,26 motor 8, 14,20 Resin turntable 22 Magnetic steel plate

Claims (3)

[Scope of utility model registration request] 1. A spindle motor comprising a turntable made of resin, and a magnet integrally molded with the turntable. 2. A spindle motor comprising a turntable made of resin, wherein molding resin of the turntable is melted to fix a magnet. 3. A turntable formed by integrally molding a magnetic steel plate and a resin material to form a turntable, and magnetically attracting a magnet magnetized to the magnetic steel plate. Spindle motor.