CN101394111A

CN101394111A - Brushless motor stator

Info

Publication number: CN101394111A
Application number: CNA2008101207672A
Authority: CN
Inventors: 陈阳生; 邱少杰
Original assignee: 邱少杰
Current assignee: ZHEJIANG JINGLEI COMPRESSOR CO., LTD.
Priority date: 2008-09-11
Filing date: 2008-09-11
Publication date: 2009-03-25
Anticipated expiration: 2028-09-11
Also published as: CN101394111B

Abstract

The invention discloses a brushless motor stator, which comprises a cylinder-shaped yoke. A plurality of radial projections are formed along the inner surface of the cylinder-shaped yoke and towards the center of the yoke; block wire parts formed at the end parts of the projections respectively expand towards two sides of the projections; rotor accommodating chambers are formed on the inner surface of the block wire parts; two insulation frame works with the same shape are inserted in the positive and the negative of the cylinder-shaped yoke; a plurality of winding parts are arranged on the insulation frame works, and the winding parts can be combined with the projections and coat on the outer surface of the projections; and coils are wound on the winding parts. The insulation frameworks formed by module compressing are inserted into stator grooves in advance to ensure that the insulation frameworks are combined together with the stators, and then the coils are wound at the winding parts of the insulation frameworks. The invention has the advantages of saving labor and time, having wear resistance, and greatly improving insulation effect, compared with the prior art.

Description

A kind of brushless motor stator

Technical field

It is good to the present invention relates to a kind of resistance to wear, the brushless motor stator of good insulating effect.

Background technology

Motor is made up of stator and two main parts of rotor, motor stator in the past is general to adopt slotting insulating paper to reach insulation, this structure needs the workman earlier the insulating paper foldable type, and then the insulating paper after the moulding is inserted in the groove of motor stator, wind the line on insulating paper, adopt this structure both to waste time and energy, insulation effect is bad again, it is damaged that insulating paper is subjected to friction easily, brings very big inconvenience more for the electric machine winding of back.

Summary of the invention

The present invention is directed to above-mentioned the deficiencies in the prior art, provide a kind of durable in use, the brushless motor stator that insulation effect is good, can will adopt the insulation framework of compression molding to be inserted in the stator slot in advance, combine together with stator, and then on the winding section of insulation framework, wind the line, time saving and energy saving.

Technical scheme of the present invention is achieved in that

A kind of brushless motor stator, this stator includes a cylindrical shape yoke, inner surface along the cylindrical shape yoke is provided with a plurality of protuberances radially to yoke central authorities, be formed with the retaining line portion that expands to the protuberance both sides respectively in the end of protuberance, the inner surface of retaining line portion is formed with the rotor container cavity, tow sides at the cylindrical shape yoke are inserted with two insulation framework that shape is identical, insulation framework is provided with several winding sections, described winding section can combine with protuberance and be coated on the outer surface of protuberance, is wound with coil on the winding section.

As preferably, leave the space between two adjacent retaining line portions.

As preferably, described insulation framework includes all rounded outer back-up ring and inner shield ring, described outer back-up ring is connected by several winding sections with inner shield ring, described winding section includes two side shields that are provided with at interval and the lagging that is connected two side shield upper ends, two side shields paste mutually with the two sides of protuberance respectively, and the inner surface of lagging pastes mutually with the upper surface of protuberance; Be distributed with the some blocks of external insulation plates that keep at a certain distance away each other outside on the back-up ring, on inner shield ring, be distributed with the some interior insulation boards that keep at a certain distance away each other, the external insulation plate pastes mutually with the inner surface of cylindrical shape yoke, interior insulation board pastes mutually with the outer surface of retaining line portion, extends upward outer baffle and the Internal baffle that protrudes from the lagging outer surface respectively along the upper end of external insulation plate and interior insulation board.

As preferably, one end of described side shield connects the end of external insulation plate, the end of insulation board in the other end of side shield connects, an end of lagging connects the upper end of two adjacent external insulation plates, and the other end of lagging connects the upper end of two adjacent interior insulation boards.

As preferably, the centre of interior insulation board and Internal baffle be provided with one run through in the radial direction in the breach of insulation board and Internal baffle, the width of described breach is identical with the width in space.

As preferably, be provided with groove in the centre of the inner surface of lagging.Described groove can make and leave certain slit between the upper surface of protuberance of lagging and stator or the lower surface, and is for convenience detach.

As preferably, the width of described outer baffle is greater than the width of external insulation plate, and the width of described Internal baffle is greater than the width of interior insulation board.Thereby make coil windings and stator better isolate.

As preferably, the height of outer baffle is identical with the height of Internal baffle.

As preferably, be connected with a fixed head between two adjacent Internal baffles, the two ends, the left and right sides of fixed head connect the end of adjacent two Internal baffles respectively, and the bottom of fixed head connects lagging, and the height of fixed head is lower than the height of Internal baffle.Fixed head can increase the intensity of Internal baffle, makes Internal baffle firmer.Fixed head can increase the intensity of Internal baffle, makes Internal baffle firmer.

Adopted the technique effect of the present invention of technique scheme to be: two identical integrated insulation framework of employing mold pressing of shape can be inserted from the tow sides of stator respectively, two skeletons and stator are combined, be that the interior insulation board, external insulation plate of skeleton and the side shield of forming the winding section can be inserted in the groove between two adjacent lug bosses of stator, two laggings paste mutually with the upper and lower surface of lug boss respectively, and then on the winding section winding around; Thereby make that the assembling of stator was more time saving and energy saving, and be not easy wearing and tearing, insulation effect has also had large increase than before.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the end view of Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 1;

Fig. 4 is the B-B cutaway view of Fig. 1;

Fig. 5 is the structural representation of insulation framework of the present invention;

Fig. 6 is the right view of Fig. 5;

Fig. 7 is the rearview of Fig. 5.

Embodiment

The specific embodiment of the present invention is as follows:

Embodiment: as Fig. 1～shown in Figure 4, a kind of brushless motor stator, this stator includes a cylindrical shape yoke 13 that is formed by the steel plate lamination, inner surface along cylindrical shape yoke 13 is provided with a plurality of protuberances 14 radially to yoke central authorities, be formed with the retaining line portion 15 that expands to protuberance 14 both sides respectively in the end of protuberance 14, the width of retaining line portion 15 is greater than the width of protuberance 14, and leave the identical space of width 16 between two adjacent retaining line portions 15, protuberance 14 is as the winding supporter of winding coil, retaining line portion 15 can be used to coil is limited on the protuberance 14, prevents that its deviation position from contacting with rotor; The inner surface 18 of all retaining line portions 15 is formed with rotor container cavity 17, and rotor container cavity 17 can insert rotor.

Tow sides at cylindrical shape yoke 13 are inserted with two insulation framework that shape is identical, insulation framework is provided with several winding sections, described winding section can combine with protuberance 14 and be coated on the outer surface of protuberance 14, can produce the coil 12 of magnetic force when being wound with in energized on the winding section.

As Fig. 5～shown in Figure 7, described insulation framework includes all rounded outer back-up ring 1 and inner shield ring 2, described outer back-up ring 1 is connected by several winding sections with inner shield ring 2, described winding section includes two side shields 3 and the lagging 4 that is connected two side shield 3 upper ends that are provided with at interval, be distributed with the some blocks of external insulation plates 5 that keep at a certain distance away each other outside on the back-up ring 1, on inner shield ring 2, be distributed with the some interior insulation boards 6 that keep at a certain distance away each other.One end of described side shield 3 connects the end of external insulation plate 5, the end of insulation board 6 in the other end of side shield 3 connects, one end of lagging 4 connects the upper end of two adjacent external insulation plates 5, and the other end of lagging 4 connects the upper end of two adjacent interior insulation boards 6.

Upper end along external insulation plate 5 and interior insulation board 6 extends upward outer baffle 7 and the Internal baffle 8 that protrudes from lagging 4 outer surfaces respectively; Because of coil 12 has certain thickness, so outer baffle 7 and Internal baffle 8 can play a protective role to coil 12; The width of described outer baffle 7 is greater than the width of external insulation plate 5, and the width of described Internal baffle 8 is greater than the width of interior insulation board 6; For making overall appearance, the height of outer baffle 7 is identical with the height of Internal baffle 8; Centre at the inner surface of lagging 4 is provided with groove 10, and described groove 10 can make and leave certain slit between the upper surface of protuberance of lagging 4 and stator or the lower surface, and is for convenience detach.The centre of interior insulation board 6 and Internal baffle 8 be provided with one run through in the radial direction in the breach 9 of insulation board 6 and Internal baffle 8, the width of described breach 9 is identical with the width in space 16.Be connected with a fixed head 11 between two adjacent Internal baffles 8, the two ends, the left and right sides of fixed head 11 connect the end of adjacent two Internal baffles 8 respectively, and the bottom of fixed head 11 connects lagging 4, and the height of fixed head 11 is lower than the height of Internal baffle 8.

When two insulation framework and stator combine, external insulation plate 5 pastes mutually with the inner surface of cylindrical shape yoke 13, interior insulation board 6 pastes mutually with outer surface over against the retaining line portion 15 of cylindrical shape yoke 13 inner surfaces, two side shields 3 paste mutually with the left and right sides face of protuberance 14 respectively, the inner surface of the lagging 4 of two insulation framework pastes mutually with the upper surface and the lower surface of protuberance 14 respectively, the contact that offsets of the lower end of the side shield 3 of two insulation framework, protuberance 14 can be coated after the butt joint of two winding sections thus, and then on the winding section winding around 12.

Claims

1, a kind of brushless motor stator, this stator includes a cylindrical shape yoke (13), inner surface along cylindrical shape yoke (13) is provided with a plurality of protuberances (14) radially to yoke central authorities, be formed with the retaining line portion (15) that expands to protuberance (14) both sides respectively in the end of protuberance (14), the inner surface of retaining line portion (15) is formed with the rotor container cavity, it is characterized in that: the tow sides at cylindrical shape yoke (13) are inserted with two insulation framework that shape is identical, insulation framework is provided with several winding sections, described winding section can combine with protuberance (14) and be coated on the outer surface of protuberance (14), is wound with coil (12) on the winding section.

2, a kind of brushless motor stator according to claim 1 is characterized in that: leave space (16) between two adjacent retaining line portions (15).

3, a kind of brushless motor stator according to claim 1 and 2, it is characterized in that: described insulation framework includes all rounded outer back-up ring (1) and inner shield ring (2), described outer back-up ring (1) is connected by several winding sections with inner shield ring (2), described winding section includes two side shields (3) that are provided with at interval and the lagging (4) that is connected two side shields (3) upper end, two side shields (3) paste mutually with the two sides of protuberance (14) respectively, and the inner surface of lagging (4) pastes mutually with the upper surface of protuberance (14); Be distributed with the some blocks of external insulation plates (5) that keep at a certain distance away each other outside on the back-up ring (1), on inner shield ring (2), be distributed with the some interior insulation boards (6) that keep at a certain distance away each other, external insulation plate (5) pastes mutually with the inner surface of cylindrical shape yoke (13), interior insulation board (6) pastes mutually with the outer surface of retaining line portion (15), extends upward outer baffle (7) and the Internal baffle (8) that protrudes from lagging (4) outer surface respectively along the upper end of external insulation plate (5) and interior insulation board (6).

4, a kind of brushless motor stator according to claim 3, it is characterized in that: an end of described side shield (3) connects the end of external insulation plate (5), the end of insulation board (6) in the other end of side shield (3) connects, one end of lagging (4) connects the upper end of adjacent two external insulation plates (5), and the other end of lagging (4) connects the upper end of two adjacent interior insulation boards (6).

5, a kind of brushless motor stator according to claim 4, it is characterized in that: be provided with a breach (9) that runs through interior insulation board (6) and Internal baffle (8) in the radial direction in the centre of interior insulation board (6) and Internal baffle (8), the width of described breach (9) is identical with the width of space (16).

6, a kind of brushless motor stator according to claim 3 is characterized in that: the centre at the inner surface of lagging (4) is provided with groove (10).

7, a kind of brushless motor stator according to claim 3 is characterized in that: the width of described outer baffle (7) is greater than the width of external insulation plate (5), and the width of described Internal baffle (8) is greater than the width of interior insulation board (6).

8, a kind of brushless motor stator according to claim 7 is characterized in that: the height of outer baffle (7) is identical with the height of Internal baffle (8).

9, a kind of brushless motor stator according to claim 8, it is characterized in that: be connected with a fixed head (11) between adjacent two Internal baffles (8), the two ends, the left and right sides of fixed head (11) connect the end of adjacent two Internal baffles (8) respectively, the bottom of fixed head (11) connects lagging (4), and the height of fixed head (11) is lower than the height of Internal baffle (8).