CN2653766Y

CN2653766Y - Main shaft motor having integrated formed bearing fixing mechanism

Info

Publication number: CN2653766Y
Application number: CN 03209457
Authority: CN
Inventors: 廖秉逸
Original assignee: BIMAO SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: BIMAO SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2003-09-12
Filing date: 2003-09-12
Publication date: 2004-11-03
Anticipated expiration: 2013-09-12

Abstract

The utility model relates to a main shaft motor with an integral forming bearing fixed mechanism, which has the improved effect of raising the shaft center perpendicularity, the rotary deflection precision and the producing efficiency of the main shaft motor, etc. The main shaft motor with a bearing fixed mechanism comprises a fixed base plate, a bearing, an iron core, a winding coil and a rotor, wherein the fixed base plate is provided with a through hole which is provided with a bearing sleeve seat. The bearing sleeve seat which forms a cylindrical shape is shaped in the mode of integrated injection form with the fixed base plate and extends convexly outward. The bearing is arranged on the inner side of the bearing sleeve seat of a bearing fixed mechanism; the iron core and the winding coil are arranged on the outer side of the bearing sleeve seat of the bearing fixed mechanism. The rotor comprises a rotor shaft center and an external cover, wherein the rotor shaft center is accommodated inside the bearing, and the inner side of the external cover comprises a lodestone which is arranged on the rotary shaft for covering the periphery of a whole stator; the rotary shaft also passes through the external cover and convexly extends outward.

Description

Spindle Motor with integrated bearing fixing mechanism

Technical field

The utility model relates to Spindle Motor, is meant a kind of main shaft motor structure that is made as bearing fixing mechanism with the combination of one injection molding method especially.

Background technology

Generally speaking, the primary structure of Spindle Motor comprises stator department and rotor portions two mechanisms.Stator department partly includes a fixed base plate, which is provided with a bearing block set.Fixed base plate and bearing block set are combined into bearing fixing mechanism, as the usefulness of a bearing that is fixed at bearing block set inboard.In the lateral border of bearing block set, be provided with a stator iron core and a coiling in addition, be set in outside the bearing block set.Rotor portions partly then includes a rotor axis, keeps being located in the bearing of stator department.Also may comprise an enclosing cover as bearing tray mechanism, its enclosing cover inboard then is provided with a ring-type magnetite.

On using, the key property of Spindle Motor comprises central vertical degree and load carrier beat etc., it is the steady running characteristic of rotor portions, influenced by the accurate positioning degree of stator department middle (center) bearing, so comprise the bearing fixing mechanism of fixed base plate and bearing block set in the stator department, has quite crucial influence for the characteristic of one-piece rotor shaft motor.

But on present located by prior art, as Fig. 1～shown in Figure 3, wherein fixed base plate 10 adopts steel sheet metal to make usually, and 11 of bearing block sets are generally copper metal.Commonly use the assembly that all adopts two to separate, after making respectively, the mechanical force mode riveted group with riveted joint stands in together again.Yet the mode that this kind riveted joint group is upright causes Spindle Motor at aspects such as design, characteristic, manufacturing, qualities, and the problem of certain degree is all arranged.For example: the cooperation admissible error of different size influence between materials and parts, whether cause interference, in the machine riveting application of force pressurization clamping process of high pressure, the pressurization of axle bed each side is stressed may be unequal, axle bed also may be offset in the process of cramping or be out of shape, the many variations factor makes that the central shaft 12 of axle bed will be under three-dimensional changing factor, the central shaft 13 that goes to aim at and overlap through hole on the fixed head becomes very difficult, so also will on finished product, form error more or less, and the quality of the products such as stability of the error on these precisions and the perpendicularity when just directly having influence on the precision of motor center's axle and revolution naturally.

Summary of the invention

At the problems referred to above, main purpose of the present utility model provide a kind of simple in structure, precision is higher and easy to manufacture with the main shaft motor structure of one ejection formation as bearing fixing mechanism.

For achieving the above object, Spindle Motor with integrated bearing fixing mechanism provided by the utility model, its bearing fixing mechanism, include a fixed base plate, which is provided with a through hole, be provided with one in the through hole and make with ejection formation material one injection molding method jointly with fixed base plate, and the columned bearing block set that outwards protrudes out; One bearing is arranged in the bearing block set; One iron core and coiling are arranged on the outside of bearing block set; One rotating shaft is arranged in the bearing; One enclosing cover is arranged in the rotating shaft, and its inboard is provided with a ring-type magnetite, and the enclosing cover housing is in the periphery of bearing, iron core and coiling, and rotating shaft is also passed enclosing cover and outwards protruded out.

Aforesaid Spindle Motor with integrated bearing fixing mechanism also is provided with the chase of a ring-type on the outside wall surface of its bearing block set, the through hole cutting ferrule of fixed base plate is fixed on the chase place when ejection formation.

Description of drawings

Fig. 1 is fixed base plate and a bearing block set vertical view partly of commonly using product bearing fixing mechanism;

Fig. 2 is fixed base plate and a bearing block set cutaway view partly of commonly using product bearing fixing mechanism;

Fig. 3 is an exploded view of commonly using product fixed base plate and bearing block set;

Fig. 4 is a cutaway view of the present utility model;

Fig. 5 is the utility model fixed base plate and bearing block set vertical view partly;

Fig. 6 is the cutaway view of 6-6 hatching line direction among Fig. 5.

Embodiment

Lift a preferred embodiment and conjunction with figs. below and describe structure of the present utility model, effect and feature in detail.

As Fig. 4～shown in Figure 6, the Spindle Motor with integrated bearing fixing mechanism provided by the utility model includes:

One fixed base plate 20, which is provided with a through hole 21, be provided with in the through hole one with as penetrate materials such as plastic, macromolecule or glass be compound as fixed base plate one ejection formation and the bearing block set 22 that outwards protrudes out, bearing block set 22 is a drum cylinder, or drum post ennation, its bottom is provided with one and holds hole 23, and the outside wall surface of bearing block set 22 also is provided with the chase 24 of a ring-type, and the through hole 21 of fixed base plate is to be fixed on chase 24 places to penetrate the material cutting ferrule when ejection formation.

One bearing 30 is arranged on bearing block set 22 inboards.

One iron core and coiling 31 are arranged on the outside of bearing block set 22.

One rotating shaft 40 is installed with in bearing 30.

One enclosing cover 50, its inboard is provided with a ring-

type magnetite

51,50 of enclosing covers be arranged in the rotating shaft 40 and housing in the periphery of bearing 30, iron core and coiling 31, can rotate with rotating shaft 40, rotating shaft 40 is also passed enclosing cover 50 and is outwards protruded out, and is used to hold establish a bearing tray mechanism (not shown).

The combination of above-mentioned structure, be different from main shaft motor structure and the processing procedure mode commonly used, the main shaft motor structure of one bearing fixing of the present utility model mechanism ejection formation, remove and on processing procedure, not only needn't expend cost in order to lay in different materials and parts, and because bearing block set 22 is directly to be shaped on the fixed base plate 20 in the mode that penetrates, so the higher bearing fixing mechanism of precision can be arranged, so, the finished product of making, size is comparatively accurate in the bearing support, can lower the scale error between each part.And the perpendicularity between bearing block set and fixed base plate also can have preferable control, do not have the skew and the distortion that produce because of the riveted joint clamping again, make the quality of product control easily, stability and product percent of pass improve, on man-hour of producing in batches and cost, have more advantage, can really and effectively improve the shortcoming of commonly using product, reach purpose of design of the present utility model.

Claims

1, a kind of Spindle Motor with integrated bearing fixing mechanism is characterized in that including:

One fixed base plate which is provided with a through hole, and be provided with one in the through hole and make with ejection formation material one injection molding method jointly with fixed base plate, and the columned bearing block set that outwards protrudes out;

One bearing is arranged in the described bearing block set;

One iron core and coiling are arranged on the outside of described bearing block set;

One rotating shaft is arranged in the described bearing;

One enclosing cover is arranged in the described rotating shaft, and its inboard is provided with a ring-type magnetite, and described enclosing cover housing is in the periphery of described bearing, described iron core and coiling, and described rotating shaft is also passed enclosing cover and outwards protruded out.

2, have the Spindle Motor of integrated bearing fixing mechanism according to claim 1, it is characterized in that: the outside wall surface of described bearing block set also is provided with the chase of a ring-type, and the through hole cutting ferrule of described fixed base plate is fixed on described chase place when ejection formation.