TWI624134B - Externally rotating permanent magnet motor structure - Google Patents

Abstract

An externally-rotated permanent magnet motor structure includes a first housing, the first housing has a substrate, and the circumference of the substrate is integrally provided with a peripheral wall and an accommodation space is formed therein; and a plurality of a permanent magnet disposed on the peripheral wall of the first casing; and a second casing attached to the first casing, and the second casing is provided with an extension along the outer circumference ring thereof The height of the extending portion and the peripheral wall are slightly the same, thereby doubling the magnetic conductive area through the peripheral wall and the extending portion, so that the magnetic conduction is smooth, and the output force of the externally rotating permanent magnet motor structure is increased. .

Description

Externally rotating permanent magnet motor structure

The invention relates to a motor structure, in particular to an externally rotating permanent magnet motor structure.

According to the conventional permanent magnet motor structure, the stator includes a stator and a rotor. The stator includes a mandrel and an electromagnet portion. The electromagnet portion is disposed on the mandrel and is provided with a coil. The rotor system is provided. Provided around the stator, the rotor includes an upper cover, a plurality of permanent magnets, and a lower cover. The upper cover is coupled to the lower cover. The upper cover ring is provided with a peripheral wall, and the inner side of the peripheral wall is fixed with a plurality of equidistances. The permanent magnets are arranged, whereby the rotor acts to attract or repel the electromagnet portion of the stator by the different magnetic poles between the adjacent permanent magnets, so that the rotor continues to rotate.

However, when the structure of the permanent magnet motor is running, the peripheral wall system will conduct magnetism, allowing the magnetic energy to pass smoothly. If the thickness of the peripheral wall of the upper cover is thin, the magnetic saturation phenomenon is easily caused, so that the output force of the motor is small, and if the thickness of the peripheral wall of the upper cover is small, Thicker, although the output power of the motor can be strengthened, but the relative cost is also higher. Therefore, after observing the above shortcomings, the creator of the case believes that the existing permanent magnet motor structure still needs further improvement. The creation of creation.

The main object of the present invention is to provide an externally-rotating permanent magnet motor structure which can increase the magnetic permeability area, thereby improving the overall performance and output power of the motor.

In order to achieve the above object, the present invention provides an externally-rotating permanent magnet motor structure including a first housing that is disposed around a periphery of the stator, the first housing has a substrate, and the circumference of the substrate Forming a peripheral wall integrally and forming an accommodating space therein, and the first housing is respectively provided with a shaft hole and an opening communicating with the accommodating space, the shaft hole is bored on the substrate; a permanent magnet, the equidistant ring is disposed in the peripheral wall of the first casing; and a second casing is provided with a cover covering the opening of the first casing, and the ring of the cover The circumference is integrally provided with an extension that extends in the direction of the first housing.

The external rotation type permanent magnet motor structure provided by the invention can double the magnetic conductive area through the peripheral wall and the extending portion, so that the magnetic conduction is smooth, and the output force of the externally rotating permanent magnet motor structure is increased.

Please refer to FIG. 1 and FIG. 2 , which are exploded views and cross-sectional views of the present invention, which disclose an externally-rotating permanent magnet motor structure 100, which includes:

A first housing 10 is composed of a magnetically permeable material. In the embodiment, the magnetic conductive material is iron. The first housing 10 has a substrate 11 , and the circumference of the substrate 11 is integrated. The first housing 10 is provided with a shaft hole 14 and an opening 15 respectively communicating with the accommodating space 13 , and the shaft hole 14 is bored. In the substrate 11, the first housing 10 is integrally formed with the substrate 11 and the peripheral wall 12.

A plurality of permanent magnets 20 are disposed in the peripheral wall 12 of the first casing 10, and the two ends of the permanent magnets 20 are respectively provided with opposite magnetic poles.

The stator 30 is disposed in the accommodating space 13. The stator 30 has a mandrel 31 and an electromagnet portion 32. The mandrel 31 is threaded through the shaft hole 14 and the electromagnet portion 32 is looped. A coil 33 is disposed on the mandrel 31 and wound around the mandrel 31.

A second housing 40 is formed of a magnetically permeable material, and is provided with a cover plate 41 covering the opening 15 of the first housing 10, and an annular portion of the cover plate 41 is integrally provided with an extension portion. The extension portion 42 extends in the direction of the first housing 10. In the embodiment, the first housing 10 is disposed above the second housing 40, and the extension portion 42 is a ring. And the inner diameter of the extending portion 42 is larger than the outer diameter of the peripheral wall 12, so that the extending portion 42 is looped inside the peripheral wall 12 of the first casing 10, wherein the second casing 40 is integrally formed. The cover plate 41 and the extension portion 42 are provided.

For a further understanding of the structural features of the present invention, the application of the technical means, and the intended effect, the manner of use of the present invention will be described. It is believed that the present invention may be more deeply and specifically understood as follows:

Please refer to FIG. 1 and FIG. 2, which are cross-sectional views of the first embodiment of the present invention. The extension portion 42 is annularly disposed on the outer side of the peripheral wall 12, and the height of the peripheral wall 12 and the extension portion 42 is Slightly the same, the extension portion 42 can extend to the relative position of the substrate 11, so that when the motor structure 100 is activated, the coil 33 of the stator 30 transmits a current magnetic effect to cause the electromagnet portion 32 to generate different magnetic poles. The electromagnet portion 32 and the permanent magnets 20 are mutually attracted and repelled, so that the permanent magnets 20 continue to rotate around the electromagnet portion 32, and the peripheral wall 12 and the extension portion 42 are guided. The magnetic material can be magnetically guided to allow magnetic energy to pass, so that the peripheral wall 12 and the extending portion 42 can double the magnetic conductive area, reduce magnetic saturation and make the magnetic permeability smooth, and increase the structure of the externally rotating permanent magnet motor 100. The output of the extension portion 42 is integrally formed in the second housing 40, and has a low cost utility.

Referring to FIG. 3, which is a cross-sectional view of a second embodiment of the present invention, the second embodiment of the present invention is different from the first embodiment in that the extending portion 42 is located at the permanent magnets 20. At the intermediate position, the magnetic conductive area can be doubled through the peripheral wall 12 and the extending portion 42 to reduce the magnetic saturation to make the magnetic permeability smooth, and the output power of the externally rotating permanent magnet motor structure 100 is increased.

Referring to FIG. 4, which is a cross-sectional view of a third embodiment of the present invention, the third embodiment of the present invention is different from the first embodiment in that the second housing 40 is disposed on the first The upper portion of the casing 10 and thus the peripheral wall 12 and the extending portion 42 can double the magnetic conductive area, reduce magnetic saturation to make the magnetic permeability smooth, and increase the output force of the externally rotating permanent magnet motor structure 100.

Hereafter, the features of the present invention and its achievable efficacy are stated as follows:

The externally-rotated permanent magnet motor structure 100 of the present invention provides a magnetic permeability area that is doubled through the peripheral wall 12 and the extending portion 42 to reduce magnetic saturation and smooth magnetic conduction, and the external rotating permanent magnet motor is enlarged. The output power of the structure 100 increases the overall efficiency and output power of the motor.

In summary, the present invention has excellent advancement and practicability in similar products, and at the same time, the technical materials of such structures are frequently investigated at home and abroad, and the same structure is not found in the literature. The invention already has the invention patent requirements, and the application is filed according to law.

However, the above-mentioned ones are only one of the preferred embodiments of the present invention, and the equivalent structural changes of the present invention and the scope of the patent application are intended to be included in the scope of the present invention.

100‧‧‧External rotating permanent magnet motor structure

10‧‧‧First housing

11‧‧‧Substrate

12‧‧‧Wall

13‧‧‧ accommodating space

14‧‧‧Axis hole

15‧‧‧ openings

20‧‧‧ permanent magnet

30‧‧‧ Stator

31‧‧‧ mandrel

32‧‧‧Electromagnetic Department

33‧‧‧ coil

40‧‧‧ second housing

41‧‧‧ Cover

42‧‧‧Extension

Fig. 1 is an exploded perspective view of the present invention. Figure 2 is a cross-sectional view showing a first embodiment of the present invention. Figure 3 is a cross-sectional view showing a second embodiment of the present invention. Figure 4 is a cross-sectional view showing a third embodiment of the present invention.

Claims (3)

An externally-rotated permanent magnet motor structure includes: a first housing that is disposed around an outer periphery of the stator, the stator has a spindle and an electromagnet portion, and the electromagnet portion is disposed on the ring A coil is disposed on the mandrel, the first housing has a substrate, and the circumference of the substrate is integrally provided with a peripheral wall and an accommodation space is formed therein, and the first housing is respectively provided with the same The space is communicated with one of the shaft holes and an opening, the shaft hole is disposed on the substrate, and the shaft hole is disposed corresponding to the mandrel; and the plurality of permanent magnets are equidistantly disposed on the first casing a second housing is provided with a cover covering the opening of the first housing, and a circumferential portion of the cover is integrally provided with an extension portion facing the first housing Extending in a direction, and the extending portion extends to an intermediate position of the permanent magnets; thereby, the magnetic conductive area can be increased through the extending portion to make the magnetic permeability smooth, and the external rotating permanent magnet motor structure can be enlarged The output power. The outer-rotating permanent magnet motor structure according to claim 1, wherein the peripheral wall and the height of the extending portion are slightly the same so that the extending portion can extend to a relative position of the substrate. The outer-rotation permanent magnet motor structure according to claim 1, wherein the inner diameter of the extending portion is larger than the outer diameter of the peripheral wall, and the extending portion is disposed outside the peripheral wall of the first casing.