CN211830358U

CN211830358U - Improved structure of split stator

Info

Publication number: CN211830358U
Application number: CN202020758323.8U
Authority: CN
Inventors: 梁昌勇; 杨良才; 李红文; 江振河
Original assignee: Hepu Power Co ltd
Current assignee: Hepu Power Co ltd
Priority date: 2020-05-10
Filing date: 2020-05-10
Publication date: 2020-10-30
Anticipated expiration: 2030-05-10

Abstract

The utility model provides an improve structure of piecing together stator, includes I-shaped iron core, sets up insulating skeleton on I-shaped iron core, around the coil on insulating skeleton, its characterized in that: the insulating framework comprises insulating paper arranged on grooves on two sides of the I-shaped iron core and two end frameworks arranged on the top surface and the bottom surface of the I-shaped iron core respectively, the insulating paper is bent into a concave shape and leans against the grooves on the two sides of the I-shaped iron core, a coil is wound on the insulating framework consisting of the end frameworks and the concave insulating paper, the end frameworks comprise a bottom plate and wall plates arranged at the front end and the rear end of the bottom plate respectively, a through groove is arranged at the bottom of the end framework arranged on the top surface of the iron core, and a through hole is formed between the through groove and the top. Compared with the prior art, the utility model, have that the heat load is low, heat transfer is good, the threading can not damage the enameled wire to have advantages such as the wiring is convenient.

Description

Improved structure of split stator

Technical Field

The utility model relates to a motor technology.

Background

In order to save materials and improve the slot fullness rate of the stator, a plurality of motor stators are assembled by adopting a plurality of split unit stators, and the insulation of the split unit stators adopts a plastic framework, the prior art is, for example:

1. chinese patents CN201521136822.9, cn201310634119.x, CN201911064282.0, all adopt the following technical solutions: the upper framework and the lower framework are both in U-shaped structures, the iron core is wrapped in an opposite insertion mode, and opposite insertion joints are overlapped to form a closed annular insulation structure;

2. chinese patents CN201920665222.3 and CN201620967893.1 also adopt the following technical solutions: go up skeleton, lower skeleton and all be "U" type structure, adopt and surround the iron core to the mode of inserting, the difference is: a gap is formed at the joint of the opposite insertion, and the two plastic frameworks are not overlapped;

the technical scheme is the same as that: go up skeleton and lower skeleton and to inserting and will piece together iron core tooth portion parcel, form annular insulator, stator winding twines on this annular insulator, realizes that winding and iron core are insulating.

However, because the plastic framework belongs to an injection molding part, the finished product usually has shrinkage and deformation, the deformed plastic framework cannot be well attached to the iron core, and even can be warped, so that the space of a stator slot wound by an enameled wire can be occupied inevitably, the slot fullness rate of a stator winding is reduced, the heat load of a motor is increased, and the warped and deformed plastic framework is not beneficial to heat conduction.

In view of the defect of above-mentioned technique, someone proposes that plastic skeleton adopts integrative injection moulding on piecing together the iron core, and plastic skeleton wraps up in iron core tooth portion completely, has avoided plastic skeleton and iron core laminating bad, also can not appear the warped problem of skeleton simultaneously, has solved the above-mentioned problem that conventional concatenation unit stator exists, nevertheless, wholly mould plastics the skeleton and also have following not enoughly:

1. the integral injection molding framework is a plastic part all the time, and the heat transfer effect of the plastic part is poor;

2. the integral injection molding framework is an injection molding part, the process requirement is bound to have enough wall thickness, otherwise, cold shut or insufficient pouring are easy to occur, the problem of occupying the groove space is caused due to large wall thickness, and heat transfer is not facilitated;

3. once the mold is opened in the integral injection molding process, the length of the iron core cannot be changed any more, and the mold opening process needs to be repeated if the length of the iron core is changed, so that the mold opening cost is increased;

4. when wholly moulding plastics, need preheat the iron core, the mould is also relatively complicated, and the cost is higher than single injection molding far away.

On the other hand, piece together a block unit stator equipment back, need connect the enameled wire of each unit stator according to the design requirement, the connecting wire needs the ligature to be fixed, prior art sets up the perforation on the wallboard of plastic skeleton usually, and the ligature line is through the leading-in perforation of threading needle and carry out the ligature, and when threading needle was led in, the threading needle touched the enameled wire easily and damaged the enamel, in addition, if the enameled wire winding is more, then the enameled wire winding just covers this perforation easily to hinder going on smoothly of threading.

Disclosure of Invention

The utility model aims at providing a can effectively reduce piece together stator heat load, be favorable to the iron core heat dissipation, the commonality is good, can not injure the enameled wire when ligature wire threading, the threading does not receive the high improvement structure of piece together the piece stator that influences of enameled wire simultaneously.

The utility model discloses a realize like this: including I-shaped iron core, set up insulating skeleton on I-shaped iron core, around the coil on insulating skeleton, its characterized in that: the insulating framework comprises insulating paper arranged on grooves on two sides of the I-shaped iron core and two end frameworks arranged on the top surface and the bottom surface of the I-shaped iron core respectively, the insulating paper is bent into a concave shape and attached to the grooves on the two sides of the I-shaped iron core, a coil is wound on the insulating framework consisting of the end frameworks and the concave insulating paper, the end frameworks comprise a bottom plate and wall plates arranged at the front end and the rear end of the bottom plate respectively, a through groove is arranged at the bottom of the end framework arranged on the top surface of the iron core, and a through hole is formed between the through groove and the top surface.

In order to avoid the displacement to appear in the iron core recess of concavity insulating paper, be provided with the L shaped plate on the wallboard of end skeleton, the L shaped plate setting is in the both sides that are close to the bottom plate, and the horizontal limit of L shaped plate is connected with the wallboard, erects the limit and is formed between cantilever form and the wallboard and inlay the groove, inlays the groove notch direction and inlays the inslot facing the insulating paper of concavity, and the lateral wall of bending the insulating paper of concavity inlays and advances to inlay the inslot, realizes the location of concavity insulating paper on the iron core.

In order to further stabilize the concave insulating paper and position the end skeleton, the vertical edge of the L-shaped plate extends towards the concave insulating paper, extends into the iron core groove beyond the joint of the end skeleton bottom plate and the iron core end surface, and is tightly attached to the side wall of the insulating paper.

In order to further avoid the displacement of the end framework on the iron core, more than one through hole is arranged on the I-shaped iron core, a boss is arranged at the position of the end framework corresponding to the through hole, and the boss is inserted into the through hole of the I-shaped iron core.

After the split stator units are assembled into a circular stator, connecting wires and leading cables need to be fixedly bound, so that a side through groove which is perpendicular to the bottom plate and is communicated with the through groove is formed in the outer side (close to the outer circle side of the iron core) of the end framework wall plate, a notch is machined in the top of each of the two wall plates of the framework, the notch close to the outer circle side wall plate of the iron core is communicated with the side through groove, and when binding wires are bound, the penetrating needle leads in the binding wires to penetrate through a through hole formed between the through groove and the top surface of the I-shaped iron core → the side through groove → the top notch of the wall plate → the through hole formed between the through groove and the top surface of the I-shaped iron core → the side through groove → the top notch of the wall plate … …. Because the side through groove is formed in the wallboard, and the top of the wallboard is provided with the notch, the binding wire cannot be higher than the surface of the outer circle of the iron core, the axial direction cannot be higher than the wallboard, and the axial height of the end part of the stator cannot be ultrahigh.

During winding, in order to fix the start end enameled wire, a clamping groove is formed in the top end of the wallboard of the end framework, during winding, the start end of the enameled wire is fixed in a first clamping groove, winding is finished, and the tail end of the enameled wire is fixed in a second clamping groove.

The height of the concave insulating paper arranged on the two sides of the I-shaped iron core can be randomly cut, so that the technical scheme is not limited by the length of the iron core and can meet the requirements of iron cores with different heights, on the other hand, the material of the concave insulating paper can be made of a composite material with good heat conductivity and high temperature resistance, and the thickness of the insulating paper made of the composite material can be very thin and is generally below 0.4mm, so that the occupied space of a stator slot is very small, obviously more enameled wires can be wound, the heat transfer is facilitated, the heat load of a motor can be reduced, and the temperature of the motor is further reduced.

Advantageous effects

Compared with the prior art, the utility model, have following advantage:

1. the bottom of the end frame is provided with a through groove and a threading lead-in binding wire which can not damage the enameled wire.

2. The end skeleton wallboard outside sets up logical groove, and the wiring can not exceed the wallboard outside, and the security is high.

3. The gap at the top of the end framework wallboard is communicated with the side through groove, the binding wire cannot be higher than the end face of the wallboard, and the axial height of the end part of the stator is guaranteed not to be ultrahigh.

4. Insulating paper is used as an insulating framework, the thickness of the insulating paper is small, the occupied slot space is small, more enamelled wires can be placed in stator slots, and the heat load of a motor can be reduced by stators with the same size;

5. the insulating paper has small thickness and obvious heat transfer effect, can transfer the heat of the winding to the iron core easily, and has good heat dissipation;

6. if the iron length is changed, only the insulating paper with different lengths is cut, so that the mold is multipurpose, and the cost can be reduced.

Drawings

Fig. 1 is a schematic exploded view of the present invention;

FIG. 2 is a schematic view of the assembled structure of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 2 with the coil removed;

FIG. 4 is an exploded view of the insulating frame;

fig. 5 is a schematic diagram of the assembled end banding of a partially split stator unit.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings and examples:

as shown in fig. 1 and 2, the utility model discloses a I-shaped iron core 1, set up insulating skeleton an on I-shaped iron core 1, around coil b on insulating skeleton an, its characterized in that: the insulation framework a comprises insulation paper 2 arranged on grooves 1a on two sides of an I-shaped iron core 1, two end frameworks 3 arranged on a top surface 1b and a bottom surface 1c of the I-shaped iron core 1 respectively, the insulation paper 2 is bent into a concave shape and leans against the grooves 1a on two sides of the I-shaped iron core 1, a coil b is wound on the insulation framework a consisting of the end frameworks 3 and the concave insulation paper 2, the end frameworks 3 comprise a bottom plate 3a and wall plates 3b arranged at the front end and the rear end of the bottom plate respectively, a through groove 3c is arranged at the bottom of the end framework 3 arranged on the top surface 1b of the iron core 1, and a through hole 4 is formed between the through groove 3c and the top surface 1.

In order to avoid the displacement of the concave insulating paper 2 in the groove 1a of the iron core 1, an L-shaped plate is arranged on a wallboard of the end framework 3, the L-shaped plate is arranged on two sides close to the bottom plate 3a, the transverse edge 3d of the L-shaped plate is connected with the wallboard 3b, the vertical edge 3e is in a cantilever shape and forms an embedding groove 3f between the wallboard 3b, the notch direction of the embedding groove 3f faces the concave insulating paper 2, the side wall of the concave insulating paper 2 which is bent into a shape is embedded into the embedding groove 3f, and the positioning of the concave insulating paper 2 on the iron core is realized.

For further firm concavity insulating paper 2 and to terminal skeleton 3 location, L shaped plate vertical edge 3e stretches out to 2 directions of concave insulating paper, exceed the combination department of terminal skeleton bottom plate 3a and iron core terminal surface and extend to in iron core recess 1a, and hug closely 2 lateral walls of insulating paper, because the vertical edge 3e of L shaped plate is sheet metal cantilever structure, like this, L shaped plate cantilever end can elastic bending deformation under the exogenic action, when installing concave insulating paper 2, the vertical edge 3e of the crooked L shaped plate that outwards, make and inlay the groove 3f and enlarge, can insert insulating paper 2 smoothly, get rid of external force, can compress tightly the lateral wall of concave insulating paper 2, thereby form firm structure.

In order to further avoid the displacement of the end framework 3 on the iron core 1, more than one through hole 1d is arranged on the I-shaped iron core 1, a boss 3h is arranged at the position of the end framework 3 corresponding to the through hole 1d, and the boss 3h is inserted into the through hole 1d of the I-shaped iron core.

During winding, in order to fix the start end enameled wire, a clamping groove is formed in the top end of the wall plate 3b of the end framework 3, during winding, the start end of the enameled wire is fixed in a first clamping groove 3k, winding is finished, and the tail end of the enameled wire is fixed in another clamping groove 3m, as shown in fig. 2.

As shown in fig. 5, after the split stator units are assembled into a circular stator, the connecting wires and the leading cables 6 need to be fixedly bound, therefore, a side through groove 3n which is perpendicular to the bottom plate 3a and is communicated with the through groove 3c is arranged at the outer side (the side close to the excircle of the iron core) of the end framework wall plate 3b, the top parts of two wall plates 3b of the end framework are both provided with notches 3p, the notch 3p close to the excircle side 1e of the iron core is communicated with a side through groove 3c, when binding wires 5 are used for binding, the needle threading and leading-in binding wire 5 runs in the direction of an arrow, passes through the through-groove through-hole 4 → the side through-groove 3n → the wall panel top notch 3p → crosses over the end connection wire, the lead-in cable 6 → the other wall panel notch 3p → the through-hole 4 → the side through-groove 3n → the wall panel top notch 3p … …, circulating like this, ligature 5 has just carried out the ligature with whole annular stator tip, realizes that the stator tip is fixed. Owing to be provided with the logical groove 3n of side, the top has breach 3p on wallboard 3b, so, ligature 5 can not exceed iron core excircle surface 1e, and the axial can not exceed wallboard 3b yet, has guaranteed that stator tip axial height can not superelevation, can not touch the enameled wire when the needle-threading passes through-hole 4 simultaneously yet.

In the scheme, the lower end face of the ring-shaped stator assembled by the split stator units is not a wire outlet end and does not need binding, so that the end framework 3 arranged on the bottom surface of the I-shaped iron core can be provided with the bottom through groove 3c, the side through grooves 3n and the top gap 3p, and can be completely the same as the end framework 3 on the top of the iron core.

Claims

1. The utility model provides an improve structure of piecing together stator, includes I-shaped iron core, sets up insulating skeleton on I-shaped iron core, around the coil on insulating skeleton, its characterized in that: the insulating framework comprises insulating paper arranged on grooves on two sides of the I-shaped iron core and two end frameworks arranged on the top surface and the bottom surface of the I-shaped iron core respectively, the insulating paper is bent into a concave shape and attached to the grooves on the two sides of the I-shaped iron core, a coil is wound on the insulating framework consisting of the two end frameworks and the two concave insulating paper, the end frameworks comprise a bottom plate and wall plates arranged at the front end and the rear end of the bottom plate respectively, a through groove is arranged at the bottom of the end framework arranged on the top surface of the iron core, and a through hole is formed between the through groove and the top surface.

2. The improved structure of split stator as claimed in claim 1, wherein: be provided with the L shaped plate on the wallboard of end skeleton, the L shaped plate sets up in the both sides that are close to the bottom plate, and the horizontal limit of L shaped plate is connected with the wallboard, erects the limit and is cantilever form and wallboard between form and inlay the groove, inlays groove notch direction and inlays into inlaying the inslot to the insulating paper of concavity, and the lateral wall of bending into the insulating paper of concavity is inlayed.

3. The improved split stator structure of claim 2, wherein: the L-shaped plate vertical edge arranged on the end framework wallboard extends towards the direction of the concave insulation paper, exceeds the joint of the bottom plate and the end face of the I-shaped iron core, extends into the groove of the I-shaped iron core, and is tightly attached to the concave insulation paper side wall.

4. An improved split stator structure as claimed in claim 1, 2 or 3, wherein: more than 1 through hole is arranged on the I-shaped iron core, a boss is arranged at the position of the end framework corresponding to the through hole, and the boss is inserted into the through hole of the I-shaped iron core.

5. An improved split stator structure as claimed in claim 1, 2 or 3, wherein: the side that is provided with perpendicular to bottom plate and communicates with logical groove is led to in the outside of end skeleton wallboard.

6. The improvement of split stator as claimed in claim 4 wherein: the side that is provided with perpendicular to bottom plate and communicates with logical groove is led to in the outside of end skeleton wallboard.

7. The improved structure of split stator as claimed in claim 5, wherein: the top of each of the two wall plates of the framework is provided with a notch, and the notch close to the side wall plate of the excircle of the iron core is connected with the side through groove.

8. The improved structure of split stator as claimed in claim 6, wherein: the top of each of the two wall plates of the framework is provided with a notch, and the notch close to the side wall plate of the excircle of the iron core is connected with the side through groove.

9. An improved structure of split stator as claimed in claim 1 or 2 or 3 or 6 or 7 or 8, wherein: the top end of the wallboard of the end framework is provided with a clamping groove.

10. The improved structure of split stator as claimed in claim 5, wherein: the top end of the wallboard of the end framework is provided with a clamping groove.