CN110391710B

CN110391710B - Three-phase motor

Info

Publication number: CN110391710B
Application number: CN201810387258.XA
Authority: CN
Inventors: 洪银树; 尹佐国; 杨坤达
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 2018-04-19
Filing date: 2018-04-26
Publication date: 2021-01-29
Anticipated expiration: 2038-04-26
Also published as: CN110391710A; TW201944703A; TWI689157B

Abstract

A three-phase motor is used for solving the problems that the winding of the existing three-phase motor is disordered and the connection and fixation are difficult to adjust. The method comprises the following steps: a shaft portion; each phase line group is provided with an incoming line part, a plurality of winding parts, at least one pull line part and an outgoing line part; the three circuit boards are respectively and electrically connected with the wire inlet part and the wire outlet part of the three phase wire groups, and the wire inlet part and the wire outlet part which are electrically connected with the same circuit board are different phase wire groups; and a rotor rotatably provided on the outer periphery of the shaft portion.

Description

Three-phase motor

Technical Field

The invention relates to a three-phase motor, in particular to a three-phase motor with adjustable winding distribution and connection.

Background

The three-phase motor has a stable rotating magnetic field, and can stably operate, so that the three-phase motor has the advantages of stable power, power saving, easiness in starting and the like.

However, the stator coil of the conventional three-phase motor needs to have three winding groups, the three winding groups can be combined by Y-connection or delta-connection, each winding group can also comprise a plurality of winding units, and each winding unit can be bridged over the stator, so that the winding of the stator coil is disordered, the positions of two electric connection ends of each winding group are disordered, the connection is difficult, and the switching between the Y-connection and the delta-connection cannot be realized.

In view of the above, there is still a need for improvement of the conventional three-phase motor.

Disclosure of Invention

To solve the above problems, it is an object of the present invention to provide a three-phase motor that can arrange windings to prevent damage and short-circuiting of the windings.

Another object of the present invention is to provide a three-phase motor for adjusting the three-phase connection to be Y-shaped or triangular.

In the following description of the present invention, directional terms or their similar terms, such as "upper (top)", "lower (bottom)", "inner" and "outer", refer to directions of the drawings, and are only used for assisting the explanation and understanding of the embodiments of the present invention, but not for limiting the present invention.

The three-phase motor of the present invention comprises: a shaft portion; each phase line group is provided with an incoming line part, a plurality of winding parts, at least one pull line part and an outgoing line part; the three circuit boards are respectively and electrically connected with the wire inlet part and the wire outlet part of the three phase wire groups, and the wire inlet part and the wire outlet part which are electrically connected with the same circuit board are different phase wire groups; and a rotor rotatably provided on the outer periphery of the shaft portion.

Therefore, the three-phase motor of the invention arranges the six line ends of the three phase line groups with different phases on the three circuit boards, and easily adjusts the three-phase wiring into Y shape or triangle shape by mutually electrically connecting the three circuit boards and conducting, and arranges the phase line groups through the circuit boards, thereby having the effects of reducing the overlapping of winding, reducing the abrasion and reducing the probability of short circuit.

The winding seat is positioned on the periphery of the shaft part and is provided with a first annular wall, a plurality of winding frames and a second annular wall, the plurality of winding frames are connected to the periphery of the first annular wall in an annular arrangement mode, the second annular wall is positioned on the inner periphery of the first annular wall, an integral wire groove is formed between the second annular wall and the first annular wall, and a plurality of notches are formed in the second annular wall. Therefore, the three phase line groups can penetrate and stretch and cross the inner space and the outer space of the winding base, and the three phase line groups have the effects of arrangement and easy line pulling.

The wire winding parts of the three phase wire groups are respectively wound on the plurality of wire winding frames, and the wire pulling parts of the three phase wire groups cross the first annular wall and are positioned in the wire arranging groove. Therefore, the winding parts with different phases can be arranged in each section of the stator, and the effect of adjusting the induction section of the stator is achieved.

Wherein, this axial region has a sleeve pipe, a dabber and a line piece that separates, and this dabber stretches into this sleeve pipe, and this sleeve pipe is equipped with a side grooving in order to combine this line piece that separates, and this line piece that separates forms a wire casing and is located this side grooving, and this wire winding seat is located this sheathed tube periphery. So, this separate the line piece can prevent to cause this wire casing impaired when this dabber stretches into this sleeve pipe, has the efficiency of the wire rod of protection through this wire casing.

Each circuit board is provided with two wiring parts which pass through the notch of the winding seat and the wire groove of the shaft part. Therefore, the effect of improving the smoothness of the stay wire of the wiring part is achieved.

The two wiring parts of each circuit board are electrically connected with one driving circuit board. Thus, the function of inputting the operation control signal is provided.

Wherein, this rotor has this axial region of a bearing group link, and this rotor has this bearing group of a casing link, and the internal surface of this casing is equipped with a magnetic part and a first insulating piece, and this magnetic part is relative with the periphery of this coil winding seat, and this first insulating piece is located the one end of this magnetic part and radially extends in order to cover the range of setting of these three phase line group towards this axial region. Therefore, the first insulating sheet prevents the three phase line groups from contacting the shell and being short-circuited, and the efficiency of operation is maintained.

The shell is provided with a plurality of combination holes, and each combination hole penetrates through the inner surface and the outer surface of the shell and is opposite to the first insulating sheet. Therefore, each combining hole can be used for combining a screw, and the first insulating sheet can block the screw, so that the fan blade or the driving assembly can be conveniently combined with the rotor.

The inner surface of the shell is provided with a second insulating sheet, and the second insulating sheet is positioned at the other end of the magnetic part and extends radially towards the shaft part so as to cover the setting range of the three phase line groups. Therefore, the first insulating sheet and the second insulating sheet prevent the three phase line groups from contacting the shell to cause short circuit, and the efficiency of operation is maintained.

The shell is provided with a plurality of combination holes, and each combination hole penetrates through the inner surface and the outer surface of the shell and is aligned to the first insulation sheet and the second insulation sheet. Therefore, each combination hole can be used for combining a screw, and the first insulation sheet and the second insulation sheet can block the screw, so that the fan blade or the driving assembly can be conveniently combined with the rotor.

The top surface of the first annular wall is provided with a plurality of convex blocks, and the top surface of the first annular wall forms height differences on two sides of each convex block. Therefore, after each wire pulling part crosses the first annular wall, the wire pulling parts are not easy to contact with each other due to overlapping, and the effect of reducing the probability of short circuit caused by abrasion is achieved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1: an exploded perspective view of a preferred embodiment of the present invention;

FIG. 2: a partially assembled perspective view of a preferred embodiment of the present invention;

FIG. 3: an enlarged view of a portion of the structure shown in FIG. 2;

FIG. 4: an assembled cross-sectional view of a preferred embodiment of the present invention.

Description of the reference numerals

1 shaft part

11 mandrel 111 cap head

112 coupling 12 sleeve

121 side groove 122 combination hole

13 wire insulation piece 131 wire groove

2-phase line set

21 line inlet u1 first line inlet

v1 second wire inlet part w1 third wire inlet part

22 winding part and 23 wire drawing part

24 first outlet part of outlet part u2

v2 second outgoing line part w2 third outgoing line part

3 Circuit board

31 wiring portion

4 rotor

41 bearing set 42 shell

421 combining hole 43 magnetic element

44 first insulating sheet 45 second insulating sheet

5 winding seat

51 first annular wall 51a

511 bump 52 reel

53 second surround 531 gap

54 whole wire ditch

6 drive circuit board

And (5) an S screw.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below:

referring to fig. 1, a three-phase motor according to a preferred embodiment of the present invention includes a shaft 1, three phase groups 2, three circuit boards 3, a rotor 4 and a winding base 5, wherein the three circuit boards 3 are electrically connected to the three phase groups 2, the three phase groups 2 are wound on the winding base 5, the winding base 5 is located on an outer periphery of the shaft 1, and the rotor 4 is rotatably located on an outer periphery of the shaft 1.

The shaft portion 1 extends into a sleeve 12 from a mandrel 11, the sleeve 12 can also be combined with a wire separating piece 13 from a side groove 121, the wire separating piece 13 forms a wire groove 131 in the side groove 121, and the wire separating piece 13 can prevent the rotor 4 and the winding seat 5 from being damaged when the mandrel 11 extends into the sleeve 12. One end of the mandrel 11 can also be provided with a cap 111, and then is fixed at the other end of the mandrel 11 by a combining piece 112, so that the mandrel 11 can be clamped and fixed by two ends of the sleeve 12; the wall of the sleeve 12 may further have a coupling hole 122, and the coupling hole 122 may be coupled with a screw S to fix the spindle 11 in the sleeve 12.

Referring to fig. 2 and 3, each phase group 2 starts from one incoming portion 21 and forms a plurality of winding portions 22, the winding portions 22 may further be bridged across different sections of the winding seat 5 by at least one pulling portion 23, and an outgoing portion 24 is formed at the end of each phase group 2. The three phase sets 2 are metal wires having electrical conductivity.

Each circuit board 3 has two wiring portions 31, so that the two wiring portions 31 are electrically connected to the incoming line portion 21 and the outgoing line portion 24 respectively through the circuit board 3, wherein the incoming line portion 21 and the outgoing line portion 24 electrically connected to the same circuit board 3 are different phase line sets 2, and additionally, the six wiring portions 31 of the three circuit boards 3 are preferably electrically connected to one driving circuit board 6, and each circuit board 3 may further have a hall sensing component (not shown).

Referring to fig. 4, the rotor 4 is connected to the outer periphery of the casing 12 of the shaft portion 1 through a bearing set 41, the rotor 4 is connected to the bearing set 41 through a casing 42, the casing 42 can rotate relative to the shaft portion 1, a magnetic member 43 is disposed on an inner surface of the casing 42, the magnetic member 43 is opposite to the outer periphery of the winding base 2, a first insulating sheet 44 and a second insulating sheet 45 are disposed on the inner surface of the casing 42, the first insulating sheet 44 and the second insulating sheet 45 are respectively disposed at two axial ends of the magnetic member 43 and extend radially toward the shaft portion 1 to cover the setting range of the three phase line sets 2, and thus, the first insulating sheet 44 and the second insulating sheet 45 can prevent the three phase line sets 2 and the three circuit boards 3 from contacting the casing 42 to cause short circuit. The housing 42 may further have a plurality of connection holes 421, each connection hole 421 penetrates through the inner and outer surfaces of the housing 42 and is aligned with the first insulation sheet 44 and the second insulation sheet 45, each connection hole 421 is used for connecting a screw S, and the first insulation sheet 44 and the second insulation sheet 45 can block each screw S to prevent each screw S from falling into the housing 42. In the embodiment, the first insulating sheet 44 and the second insulating sheet 45 are disposed inside the rotor 4, but the invention is not limited thereto, and the first insulating sheet 44 may be separately disposed to cover a portion of the three phase line sets 2 and the three circuit boards 3, and still have the effect of preventing short circuit.

Referring to fig. 2 to 4, the winding base 5 is positioned at the outer periphery of the sleeve 12 of the shaft portion 1, a top surface 51a of a first ring wall 51 of the winding base 5 is provided with a plurality of protrusions 511, and a top surface 51a of the first ring wall 51 forms a height difference at both sides of each protrusion 511, and further, a plurality of winding frames 52 are connected to the outer periphery of the first ring wall 51 in a ring-shaped arrangement, a second ring wall 53 is positioned at the inner periphery of the first ring wall 51, and a wire arranging groove 54 is formed between the second ring wall 53 and the first ring wall 51, so that the winding portions 22 of the three phase wire sets 2 are respectively wound around the plurality of winding frames 52, and the wire pulling portions 23 cross the height difference portion of the top surface 51a of the first ring wall 51 and then enter the wire arranging groove 54, so that the plurality of wire pulling portions 23 are not easily overlapped in the wire arranging groove 54, and thus the plurality of wire pulling portions 23 can be prevented from contacting each other, and the second ring wall 53 can be further provided with a plurality of notches 531, the two wiring portions 31 of each circuit board 3 are electrically connected to the driving circuit board 6 through the notch 531 and the slot 131 of the shaft portion 1, so that the six wiring portions 31 of the three circuit boards 3 can be smoothly pulled, and are prevented from being intertwined and are easy to arrange.

Referring to fig. 2, the present embodiment has eighteen winding frames 52, and each phase group 2 is continuously wound around three adjacent winding frames 52, and after six winding frames 52 are spaced, three adjacent winding frames 52 are continuously wound, but the invention is not limited thereto. In this embodiment, each phase group 2 is formed by forming three winding portions 22 on three winding frames 52 from the wire inlet portion 21, then forming three winding portions 22 on three winding frames 52 from the wire pulling portion 23 across six winding frames 52 through the wire straightening groove 54, and forming the wire outlet portion 24 at the end, so that six and ten winding frames 52 are respectively spaced between the wire inlet portion 21 and the wire outlet portion 24 of each phase group 2, and a first wire outlet portion u2 of a first phase and a second wire inlet portion v1 of a second phase are formed on the adjacent winding frame 52, a second wire outlet portion v2 of a second phase and a third wire inlet portion w1 of a third phase are formed on the adjacent winding frame 52, and a third wire outlet portion w2 of the third phase and a first wire inlet portion 36u 82 of the first phase are formed on the adjacent winding frame 52.

Referring to fig. 2 and 3, according to the above structure, the incoming line portion 21 and the outgoing line portion 24 of each phase group 2 are electrically connected to different circuit boards 3, and the winding portions 22 of the three phase groups 2 can be received in the winding frames 52 of the winding base 5, and the pulling wire portions 23 of the three phase groups 2 and the wire connecting portions 31 of the three circuit boards 3 can be aligned through the first ring wall 51, the second ring wall 53 and the wire aligning grooves 54 of the winding base 5.

In summary, in the three-phase motor of the present invention, the six terminals of the three phase line sets with different phases are disposed on the three circuit boards, and the three circuit boards are electrically connected to each other and are electrically conductive, so that the three-phase wiring is easily adjusted to be Y-shaped or triangular, and the phase line sets can be arranged by the circuit boards, thereby reducing overlapping of winding wires, and reducing wear and short circuit. The three-phase motor of the invention is suspended by the shaft part, and then the fan blades are fixed on the shell of the rotor by screws, thus the three-phase motor of the invention can be used for driving a ceiling fan to operate.

Although the present invention has been disclosed with reference to the above preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A three-phase motor, comprising:

a shaft portion;

each phase line group is provided with an incoming line part, a plurality of winding parts, at least one pull line part and an outgoing line part;

the winding seat is positioned on the periphery of the shaft part and is provided with a first annular wall, a plurality of winding frames and a second annular wall, the winding frames are connected to the periphery of the first annular wall in an annular arrangement mode, the second annular wall is positioned on the inner periphery of the first annular wall, a wire arranging groove is formed between the second annular wall and the first annular wall, and the second annular wall is provided with a plurality of notches;

the three circuit boards are respectively and electrically connected with the wire inlet part and the wire outlet part of the three phase wire groups, and the wire inlet part and the wire outlet part which are electrically connected with the same circuit board are different phase wire groups; and

the rotor is rotatably arranged on the periphery of the shaft part and provided with a bearing assembly connected with the shaft part, the rotor is provided with a shell connected with the bearing assembly, the inner surface of the shell is provided with a magnetic part and a first insulating sheet, the magnetic part is opposite to the periphery of the winding seat, and the first insulating sheet is positioned at one end of the magnetic part and radially extends towards the shaft part so as to cover the setting range of the three phase line assemblies.

2. The three-phase motor as claimed in claim 1, wherein the winding portions of the three phase wire sets are respectively wound around the plurality of bobbins, and the wire pulling portions of the three phase wire sets are located in the wire arranging grooves across the first ring wall.

3. The three-phase motor of claim 1, wherein the shaft portion has a bushing, a mandrel and a wire separator, the mandrel extending into the bushing, the bushing having a side groove to engage the wire separator, the wire separator forming a wire slot in the side groove, the wire holder being positioned at an outer periphery of the bushing.

4. The three-phase motor as claimed in claim 3, wherein each circuit board has two wiring portions passing through the notch of the bobbin and the slot of the shaft portion.

5. The three-phase motor according to claim 4, wherein the two wiring portions of each circuit board are electrically connected to one driving circuit board.

6. The three-phase motor as claimed in claim 1, wherein the housing is provided with a plurality of coupling holes, each of which penetrates through inner and outer surfaces of the housing and is positioned opposite to the first insulation sheet.

7. The three-phase motor as claimed in claim 1, wherein the inner surface of the casing is provided with a second insulation sheet located at the other end of the magnetic member and extending radially toward the shaft portion to cover the arrangement range of the three phase sets.

8. The three-phase motor as claimed in claim 7, wherein the housing is provided with a plurality of coupling holes, each of which penetrates through inner and outer surfaces of the housing and is positioned with respect to the first and second insulation sheets.

9. The three-phase motor as claimed in claim 1, wherein the first ring wall has a plurality of protrusions formed on a top surface thereof, and the top surface of the first ring wall has a height difference formed on both sides of each protrusion.