TWI552490B - No groove brushless motor structure - Google Patents

Description

Slotless brushless motor structure

The invention is a modification of the structure of the slotless brushless motor which is conventionally composed of a casing, a circular silicon steel sheet group and a permanent magnet rotor portion, thereby providing a drastically reduced cost and rapidly winding the enameled wire. A slotless brushless motor structure that locates and specifically causes coil polarity to be misaligned.

Referring to the fifth and sixth figures, the conventional slotless brushless motor basically comprises: a casing 91: a circular silicon steel sheet set 92, which is composed of a plurality of circular silicon steel sheets and is sleeved in the outer casing 91; a permanent magnet rotor portion 93 is disposed in the circular silicon steel sheet set 92; the permanent magnet rotor portion 93 is provided with: a permanent magnet sleeve 93A coaxially sheathed in the silicon steel sheet group 92; The sleeve 93B is sleeved on the front and rear ends of the permanent magnet sleeve 93A; a rotating shaft 93C is disposed in the permanent magnet sleeve 93A, and is erected and protrudes from the pair of sleeves 93B; a pair of C The buckle 93D is embedded in the rotating shaft 93C to extend the permanent magnetic The two ends of the iron sleeve 93A are respectively sleeved at positions where the rotating shaft 93C protrudes from the outer casing 91, so that the rotating shaft 93C is stably rotated in the outer casing 91.

The plurality of coils 94 must be wound into a single-phase coil, and then a plurality of sets of individual coils are placed into the inner circumference of the circular steel sheet group 92; when the plurality of coils 94 are supplied with power, The permanent magnet rotor portion 93 and the plurality of turns of the coil 94 are mutually excited and rotated to output power.

The disadvantage is that the conventional slotless brushless motor structure consisting of a casing 91, a circular silicon steel sheet set 92, and a permanent magnet rotor part 93 must be wound with a single-phase coil and multiple sets of single-phase coils. The coil is placed and unfolded and fixed on the inner circumference of the circular silicon steel sheet set 92, so that the enameled wire is relatively difficult to be unfolded and fixed on the inner circumference of the circular silicon steel sheet set 92, and the enameled wire length is long and the motor efficiency is low. The waste of materials causes time-consuming labor and is not cost-effective, and the problem of coil polarity deviation is highly prone to occur.

The present invention is particularly directed to the above-mentioned conventional lack of a slotless brushless motor structure comprising a housing 91, a circular silicon steel sheet set 92, and a permanent magnet rotor portion 93, thereby developing a motor for reducing coil winding resistance. The efficiency has both a cost-reducing structure and a slotless brushless motor structure that can quickly position the enameled wire and particularly cause the coil polarity to be misaligned.

To achieve the foregoing objective, the present invention provides a slotless brushless motor structure including: a housing; a circular silicon steel sheet group consisting of a plurality of circular silicon steel sheets and sleeved in the outer casing; a permanent magnet rotor portion is disposed in the circular silicon steel sheet group; a coil stator portion is The permanent magnet rotor portion is coaxially fixed therein, and is sleeved in a circular silicon steel sheet set, which comprises: a plurality of turns of coils which are wound by an enameled wire; and a set of coil bases which are made of an insulating material such as plastic. The thin shell structure is lightened, and the permanent magnet rotor portion is coaxially sleeved therein, and the outer circumference of the coil holder is provided with a plurality of winding portions for winding the enameled wire around the plurality of winding portions to form the plurality of winding portions. The coil; thereby, when the coil stator portion is powered, it is mutually excited with the permanent magnet rotor portion, and the permanent magnet rotor portion is pushed to rotate to output power.

(10), (91) ‧ ‧ shell

(20), (92) ‧‧‧ Round steel sheet set

(30), (93) ‧ ‧ permanent magnet rotor

(31), (93A) ‧ ‧ permanent magnet sleeve

(32), (93B) ‧ ‧ bushings

(33), (93C) ‧ ‧ shaft

(34), (93D) ‧‧‧C buckle

(35), (93E) ‧ ‧ bearings

(40) ‧ ‧ coil stator

(41), (94) ‧ ‧ coil

(42)‧‧‧ coil holder

(421)‧‧‧Winding Department

The first figure is a schematic view of the stereoscopic appearance of the present invention.

Second figure: is a schematic exploded view of the structure of the present invention (the outer circumference of the coil holder has not been wound around the enameled wire).

The third figure is a partial decomposition combination diagram of the second figure.

Figure 4 is a schematic cross-sectional view of the combination of the present invention.

Figure 5: Schematic diagram of the structure of a conventional brushless motor.

Figure 6 is a schematic cross-sectional view of the fifth figure.

Referring to the first, second, third and fourth figures, the present invention is a slotless brushless motor structure comprising: A casing 10: a circular silicon steel sheet set 20 consisting of a plurality of circular silicon steel sheets and sleeved in the outer casing 10; a permanent magnet rotor portion 30 is disposed in the circular silicon steel sheet group 20 The coil stator portion 40 is coaxially fixed to the permanent magnet rotor portion 30 and is sleeved in the circular silicon steel sheet set 20, and includes: a plurality of turns of the coil 41, which are wound by an enameled wire; The coil base 42 is made of an insulating material (such as plastic), and the set of coil bases 42 coaxially encloses the permanent magnet rotor portion 30. The outer circumference of the set of coil bases 42 is surrounded by several rolls. a winding portion 421 for winding an enameled wire on the plurality of winding portions 421 to form the plurality of winding coils 41; thereby, when the coil stator portion 40 is powered, the permanent magnet rotor portion 30 is mutually coupled to the permanent magnet rotor portion 30. The magnetism is excited to push the permanent magnet rotor portion 30 to rotate to output power.

In the implementation of the present invention, the permanent magnet rotor portion 30 includes: a permanent magnet sleeve 31 disposed in the set of coil holders 42; a pair of sleeves 32 are sleeved before the permanent magnet sleeve 31, a pair of coils 32; The C-shaped buckle 34 is embedded in the rotating shaft 33 and protrudes from the two ends of the set of coil holders 42 for fixing the set of coil holders 42 and the permanent magnet rotor portion 30.

A pair of bearings 35 are respectively sleeved on the rotating shaft 33 and protrude from the outer casing 10 The position of the shaft 33 is stabilized to rotate within the outer casing 10.

The coil holder 42 is a lightweight thin shell structure that is injection molded from plastic.

The focus of the present invention is that the coil holder 42 of the group is made of an insulating material as a lightweight thin-shell structure for injection molding, and in particular, after the permanent magnet rotor portion 30 is coaxially sleeved therein, the coil is further The winding portion 421 disposed around the outer circumference of the seat 42 is provided for the enameled wire to be easily and quickly wound by the winding portion 421 into the plurality of turns 41 of a desired polarity, and thus the number will be made The coil 41 is indeed positioned in polarity and does not cause the polarity of the coil to travel. And further, the inner coaxial sleeve inner permanent magnet rotor portion 30 and the outer coil portion 42 of the plurality of turns coils 31 are integrally wound in the circular silicon steel sheet group 20, when the line is The coil stator portion 40 is powered, and the coil base 42 is made of a thin shell structure made of an insulating material. Therefore, when the coil stator portion 40 is powered, the coil stator portion 40 and the permanent magnet rotor are not affected. The portions 30 are mutually excited to push the permanent magnet rotor portion 30 to rotate to output power.

The advantages of the invention are as follows:

[1] Significantly reduce costs. In particular, the present invention utilizes the set of coil bases to be made of a thin shell structure made of an insulating material, and the permanent magnet rotor portion is coaxially sleeved therein, and a plurality of winding portions are designed by the outer circumference of the set of coil holders. The enameled wire can be easily and quickly wound into a plurality of turns of the coil by the winding portion, and further sleeved in the circular silicon steel sheet group, thereby increasing the winding speed of the enameled wire, and greatly reducing the need for the conventional enameled wire to be wound first. The single-phase coil can reduce the cost by placing multiple sets of single-phase coils into the unfolding and fixing, which causes unnecessary waste and incoming man-hours.

[2] The coil polarity can be prevented from being biased. In particular, the permanent magnet rotor portion is coaxially sleeved in the set of coil bases, and the outer circumference of the set of coil bases provides a quick The enameled wire is neatly wound into a plurality of turns, so that the plurality of turns are indeed positioned in polarity, and when the coil is not biased, when the stator of the coil is powered, the stator of the coil can be exactly The permanent magnet rotor portions are mutually excited to push the permanent magnet rotor portion to rotate to output power.

(10) ‧‧‧ Shell

(20)‧‧‧round steel sheet set

(30)‧‧‧ permanent magnet rotor

(31)‧‧‧Permanent magnet sleeve

(32)‧‧‧ bushings

(33) ‧‧ ‧ shaft

(34)‧‧‧C buckle

(35) ‧ ‧ bearing parts

(40) ‧ ‧ coil stator

(41)‧‧‧ coil

(42)‧‧‧ coil holder

(421)‧‧‧Winding Department

Claims (4)

A slotless brushless motor structure includes: a casing; a circular silicon steel sheet set consisting of a plurality of circular silicon steel sheets and sleeved in the outer casing; a permanent magnet rotor portion is threaded through The coiled steel piece group has a permanent magnet rotor portion coaxially fixed therein, and is sleeved and fixed in the circular silicon steel sheet group, and comprises: a plurality of turns of the coil, which are wound by an enameled wire. a set of coil bases made of a lightweight and thin shell structure made of an insulating material, the set of coil bases and the permanent magnet rotor part are coaxially sleeved therein, and the outer circumference of the set of coil bases is provided with a plurality of winding parts for The enameled wire is wound around the plurality of winding portions to form the plurality of winding coils; thereby, when the coil stator portion is powered, it is mutually excited with the permanent magnet rotor portion, and the permanent magnet rotor portion is pushed to rotate Output power. The slotless brushless motor structure of claim 1, wherein the set of coil bases is made of an insulating material, and the insulating material is plastic. The slotless brushless motor structure according to claim 1, wherein the coil holder is a lightweight thin shell structure formed by plastic injection molding. The slotless brushless motor structure of claim 1, wherein the permanent magnet rotor portion comprises: a permanent magnet sleeve disposed in the set of coil holders; and a pair of sleeves and sleeves The first and second ends of the permanent magnet sleeve are disposed; the rotating shaft is disposed in the permanent magnet sleeve, and is mounted on the pair of sleeves, and is sequentially extended Pulling out the pair of sleeves and extending the set of coil holders; a pair of C-shaped buckles are embedded on the ends of the rotating shaft extending from the set of coil holders for fixing the set of coil holders to the permanent magnet rotor portion A pair of bearings are respectively disposed at a position where the rotating shaft extends out of the outer casing, so that the rotating shaft stably rotates in the outer casing.