CN210380439U - Insulating framework of stator, stator and miniature concentrated roll motor - Google Patents

Abstract

The utility model provides an insulating skeleton, stator and the miniature concentrated roll of motor of stator, wherein insulating skeleton configuration is at the terminal surface of stator, and the stator uses in the motor. The insulating skeleton includes the insulating skeleton of lead wire side and disposes the fixed end cover on the insulating skeleton of lead wire side, the insulating skeleton of lead wire side includes first component, a plurality of second component and a plurality of connecting elements, first component and second component can with fixed end cover adaptation is through seting up first cell body on first component to set up the structure with three-phase conductor layering on two lateral walls of first cell body, need not insulating sleeve and can avoid alternate contact. The utility model discloses a fixed end cover compresses tightly the wire on insulating skeleton, has saved the process of ligature and trompil, has shortened man-hour, has improved the productivity.

Description

Insulating framework of stator, stator and miniature concentrated roll motor

Technical Field

The utility model relates to a motor field especially relates to the insulating skeleton and the miniature concentrated roll motor of the stator that especially relates to concentrated coiling mode coiling wire and this type of stator.

Background

A motor such as a motor is generally composed of a stator and a rotor. The stator has a stator core and a stator winding. The stator core includes an annular yoke and a plurality of teeth portions that protrude radially inward from the yoke and are circumferentially spaced apart from each other. Each tooth portion has a tooth base portion and a tooth tip portion. The rotor is mounted on the rotating shaft and rotates around the stator with a certain gap from the front end of the teeth.

The stators are classified into a winding type, which can be roughly classified into a concentrated winding and a distributed winding, and the concentrated winding is unwound by a concentrated winding motor. That is, a concentrated winding motor in which a stator winding is directly wound into a tooth portion in a concentrated winding manner and insulating frames are arranged on both end faces of a stator core.

Compare with traditional distribution coil motor, thereby have the use amount that reduces the copper line, reduce the advantage that the copper decreases and improve motor efficiency, still have the height that reduces stator winding tip in addition to reduce the axial height of motor, realize the advantage of motor miniaturization, use more and more extensively. When the existing insulating framework is adopted to carry out the concentrated winding mode to wind the lead, corresponding binding holes need to be formed in the insulating framework, U, V, W three phases are separated by an insulating protective sleeve and a splicing point sleeve, after welding, the lead-out wire is fixed through the binding mode, and the mode of adopting the binding wire can occupy longer working hours, so that the productivity of the motor is influenced.

Meanwhile, when the existing insulating framework is used for binding U, V, W three-phase wires, the three-phase wires are all in the same plane, and in order to avoid the three-phase wires from being in contact with each other, insulating sleeves need to be sleeved on each phase, so that the production cost is increased, the processing working hours are prolonged, and the capacity of a motor is limited.

Disclosure of Invention

In order to solve the above problem, the utility model mainly provides a terminal treatment technique of its stator winding of miniature concentrated roll-up machine that the volume motor, especially stator tooth front end cusp portion is less than 2.5mm is concentrated to concentrated roll-up machine.

The main contents of the utility model include:

an insulating skeleton of a stator, comprising:

the lead side insulating framework and the reverse lead side insulating framework are respectively arranged at two ends of the stator core;

the lead wire side insulating skeleton includes:

a first member extending in a circumferential direction and an axial direction;

a plurality of second members that are provided at intervals from each other in a circumferential direction on a radially inner side of the first member and that extend in the circumferential direction;

a plurality of connecting members for connecting the second member and the first member;

the fixed end cover is arranged on the lead side insulating support and is used for pressing the outgoing line of the stator winding; the stationary end cap includes an end cap body extending circumferentially and axially, the end cap body including:

the end cover outer wall is provided with a first fixing part which is embedded at the upper end of the first component;

and a plurality of second fixing parts are arranged on the inner wall of the end cover at intervals along the circumferential direction, and the second fixing parts are respectively embedded at the upper ends of the second components.

Preferably, a first head portion extends upwards along the axial direction on the upper end surface of the first member, and the first head portion is matched with the first fixing portion;

and a second head part extends upwards along the axial direction on the upper end surface of the second component, and the second head part is matched with the second fixing part.

Preferably, the first fixing portion comprises a plurality of outer wall grooves formed in the edge of the outer wall of the end cover, and the outer wall grooves are arranged at intervals along the outer circumference of the end cover body; the first head comprises a plurality of first head units arranged at intervals along the circumferential direction, and when the fixed end cover is installed on the lead side insulating framework, the plurality of first head units are respectively arranged in the plurality of outer wall grooves;

the second fixing part comprises two inner wall grooves which are arranged along the circumferential direction of the inner wall of the end cover; the second head comprises two mounting columns, the two mounting columns are arranged on two sides of the upper end face of the second component respectively and extend upwards along the axial direction of the upper end face of the second component, and when the fixing end cover is mounted on the lead side insulating framework, the two mounting columns are arranged in the two inner wall grooves respectively.

Preferably, one side of the opening part of at least one outer wall groove extends along the circumferential direction to form a limiting buckle, one end of the upper side of the outer wall of at least one first head unit extends along the circumferential direction to form a limiting chuck, and the limiting buckle is matched with the limiting chuck;

an inner wall connecting part is arranged between the two inner wall grooves, the two inner wall grooves are symmetrically arranged by taking the center line of the inner wall connecting part as a symmetry axis, the center line of the inner wall connecting part is perpendicular to the inner wall of the end cover between the two inner wall grooves, and the included angle between the straight line of the inner walls, close to each other, of the two inner wall grooves and the center line of the inner wall connecting part is α -5 degrees.

Preferably, the first member is provided with a plurality of first grooves, the first grooves extend along the axial direction and extend from the upper end surface of the first member to the corresponding positions of the upper end surface of the connecting member along the axial direction, and the first grooves divide the first member into a plurality of first member units; when the outer circumference of the insulating framework is observed inwards, the second member and the first groove body are arranged in opposite directions.

Preferably, two installation intervals extend out of two side walls of the first tank body along the circumferential direction, the two installation intervals divide the inner wall of the first tank body into three installation grooves, and the depth of the three installation grooves is the same;

or the two side walls of the first groove body are sequentially provided with a first step, a second step and a third step from bottom to top, and the distances between the vertical surfaces of the first step, the second step and the third step are sequentially increased.

Preferably, a plurality of protruding bodies are arranged on the outer wall of the first component unit, and the protruding bodies are positioned on two side edges of the first component unit; the projection body extends outward from an outer wall of the first member unit and extends in an axial direction and a circumferential direction.

Preferably, the outer end face of one of the two mounting intervals on at least one side wall of the first groove body extends outwards to form the convex body; the upper end face and the lower end face of the protrusion body do not exceed the corresponding upper end face and the corresponding lower end face of the installation interval.

Preferably, the outer end face of at least one of the first-stage step, the second-stage step and the third-stage step on at least one side wall of the first groove body extends outwards to form the protrusion body, and the upper end face and the lower end face of the protrusion body do not exceed the upper end face and the lower end face of the corresponding first-stage step, the corresponding second-stage step and the corresponding third-stage step.

Preferably, a limiting protrusion is arranged on the outer wall of the first component unit, the limiting protrusion extends outwards from the outer wall of the first component unit, and the distance between two adjacent limiting protrusions on the first component unit and the upper end of the bracket body is different.

Preferably, the first member includes a first portion and a second portion arranged up and down, the first groove extends axially downward from an upper end surface of the first portion to a lower end surface thereof, the second portion is arranged on the lower end surface of the first portion, and the connecting member is connected between an inner wall of the second portion and a radially outer side of a lower end of the second member; wherein the outer diameter of the first portion is less than the outer diameter of the second portion, and the outer diameter of the first portion is less than the outer diameter of the stationary end cap.

The utility model also provides a stator, including stator core, stator winding and configuration at the insulating skeleton at stator core both ends, wherein, stator core is folded by multilayer platelike component and is formed, and from axial right angle cross section, has the yoke portion that extends along circumference and along a plurality of tooth portions of radial extension, tooth portion has the tooth base portion that extends to inner peripheral side along the radial from yoke portion to and set up in the radial inner peripheral side of tooth base portion and along the tooth front end portion of circumferential extension, the both ends of tooth front end portion have formed tooth front end tip portion; the width of the tip part of the front end of the tooth is H, and H is less than 2.5 mm;

the stator winding is wound on the tooth base part of the stator core and the insulating framework in a concentrated winding mode;

the insulating framework is the insulating framework of the stator.

Furthermore, the utility model also provides a miniature concentrated roll motor, including rotor and stator, the stator is foretell stator.

The utility model provides an insulating skeleton, stator and the motor of stator has following beneficial effect:

(1) the fixed end cover is arranged on the lead side insulating framework, so that the process that the existing lead side insulating support needs binding is omitted, the working time is greatly shortened, and the capacity of the concentrated winding motor is improved;

(2) the first groove body is arranged on the first part of the first component, the two side walls of the first groove body are provided with structures for layering the three-phase overlapping wires, and the outer wall of the first component is provided with the limiting bulges, so that the three-phase overlapping wires are separately arranged and are not in contact with each other at intervals, the working time is further shortened, and the processing procedures are reduced;

(3) the outer diameter of the fixed end cover is larger than that of the first part of the first component, and the outer diameter of the second part of the first component is larger than that of the first part of the first component, so that the transition line is prevented from being damaged in the assembling process, and the quality of the stator winding is guaranteed.

Drawings

Fig. 1 is a schematic view of an overall structure of an insulating frame on a lead side of a stator core according to an embodiment of the present invention;

fig. 2 is a schematic view of an overall structure of an insulating frame on a lead side of a stator core in an embodiment of the present invention;

fig. 3 is a schematic structural view of the fixing end cap of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is a schematic structural view of a lead-side insulating frame according to an embodiment of the present invention;

fig. 6 is a partially enlarged view of a lead-side insulating frame according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a second lead side insulating frame according to an embodiment of the present invention;

fig. 8 is a side view of the second lead side insulating frame according to the embodiment of the present invention;

fig. 9 is a schematic structural view of an insulating frame on the three lead sides according to an embodiment of the present invention;

fig. 10 is a partially enlarged view of the three-lead-side insulating frame according to the embodiment of the present invention;

fig. 11 is a schematic structural view of a four-lead side insulating frame according to an embodiment of the present invention;

FIG. 12 is an enlarged view at C of FIG. 11;

fig. 13 is a schematic structural view of the stator core of the present invention;

FIG. 14 is an enlarged view taken at A in FIG. 13;

fig. 15 is a schematic structural view of the reverse lead side insulating skeleton.

1-lead side insulating support; 10-a second part; 11-a first part; 11 a-a first member unit; 110-a first root; 111-a first head; 1100-a first trough; 1101 — a first winding; 1111-a first mounting groove; 1112-a second mounting groove; 1102-installation interval; 1102-; 1103-one-step; 1104-secondary steps; 1105-three steps; 1110-a limit chuck; 112-a limit protrusion; 12-a second member; 120-a second root; 121-a second head; 1210-mounting a column; 13-a connecting member;

2-fixing the end cover; 20-an end cap body; 201-end cap outer wall; 202-inner wall of end cap; 2010-outer wall grooves; 2020-inner wall recess; 2020-1-inner wall connection; 2020 a-inner walls with inner wall grooves adjacent to each other; 2020 b-center line of inner wall connection; 2011-limit chuck;

30-a yoke; 31-a tooth portion; 310-a tooth base; 311-tooth front end; 312-tip end of tooth.

Detailed Description

The technical solution protected by the present invention will be specifically described below with reference to the accompanying drawings.

The utility model provides an insulating skeleton, stator and motor of stator, the motor includes rotor and stator, the stator includes stator core, insulating skeleton and stator winding, insulating skeleton disposes at the both ends of stator core, stator winding is in on the tooth's socket structure of stator core, the coiling is on insulating skeleton simultaneously, the installation of current insulating skeleton and stator core is generally through seting up the mounting hole at the stator core tip, then insulating skeleton inserts the realization through the locating pin in the mounting hole and fixes, the utility model discloses need not to set up the mounting hole at the tip of stator core, and current insulating skeleton needs the ligature line to ligature the wire of winding on insulating skeleton, promptly need set up corresponding ligature patchhole on insulating skeleton, the utility model discloses improve this ligature process through the fixed end cover, the working hours are shortened, and the productivity of the motor is improved.

The insulating frame of the present invention will be described in detail below.

Please refer to fig. 1 to 7. The insulating skeleton includes insulating skeleton of lead wire side 1, anti-lead wire side and fixed end cover 2, the insulating skeleton of lead wire side 1 disposes the tip at stator core, and fixed end cover 2 disposes the top of the insulating skeleton of lead wire side 1 for compress tightly stator winding's lead-out wire, and the anti-lead wire side of the insulating skeleton configuration of anti-lead wire side at stator core, the structure of anti-lead wire side insulating support can be current stator end cover structure, also can be the structure the same as with the insulating skeleton of lead wire side or be close to, as figure 15 gives the structure sketch map of an anti-lead wire side insulating support, and this text does not do the restriction to the structure of anti-lead wire side insulating support, as long as can realize the stator winding twine the structure on it.

Specifically, the lead-side insulating skeleton 1 includes a second portion 10, the second portion 10 extends in the circumferential direction, in this embodiment, the second portion 10 is annular, a first portion 11 is disposed on the upper end face of the second portion 10, the first portion 11 also extends in the circumferential direction, that is, the first portion 11 is also annular, and the first portion 11 extends vertically upward along the inner wall of the second portion 10, and extends outward in the radial direction to form an outer wall of the first portion 11, and at the same time, the outer diameter of the first portion 11 is smaller than the outer diameter of the second portion 10; wherein the first portion 11 and the second portion 10 together constitute what is referred to as a "first member" of the present invention.

A plurality of second members 12 are disposed inside the first portion 11, the plurality of second members 12 are arranged in a circumferential direction, and a single second member 12 extends in the circumferential direction while extending in the circumferential direction, a connecting member 13 is disposed between the second member 12 and the second portion 10, the connecting member 13 is used for connecting the second member 12 to the second portion 10, the plurality of connecting members 13 are arranged in the circumferential direction, and the single connecting member 13 extends in the radial direction. The fixed end cap 2 is disposed on the lead-wire side insulating framework 1, specifically, the fixed end cap 2 includes an end cap body 20, the end cap body 20 extends along the circumferential direction, that is, the end cap 20 is ring-shaped, specifically, the end cap 20 includes an end cap outer wall 201 and an end cap inner wall 202, the end cap outer wall 201 is provided with a plurality of outer wall grooves 2010, and the end cap inner wall 202 is provided with a plurality of pairs of inner wall grooves 2020; a plurality of outer wall grooves 2010 are circumferentially distributed on the outer wall of the end cover and are matched with the first part 11; the inner wall grooves 2020 are circumferentially distributed on the inner wall of the end cap, and each pair of inner wall grooves 2020 includes two grooves for fitting with the second member 12. The first portion 11 includes a first root portion 110 and a first head portion 111, that is, the first head portion 111 extends upward along the axial direction on the upper end surface of the first portion 11, that is, the first root portion 110 is equivalent to the "first portion" described herein, and then the first head portion 111 extends upward on the upper end surface of the first root portion 110, the first head portion 111 includes a plurality of first head units arranged at intervals along the circumferential direction, the plurality of first head units are respectively inserted into the plurality of outer wall recesses 2010, in this embodiment, the plurality of outer wall recesses 2010 form a first fixing portion, and the connection on the outer circumference of the lead side insulating frame 1 and the outer circumference of the fixing end cap 2 is realized through the first fixing portion.

Furthermore, one end of the upper side of the outer wall of at least one first head unit extends outwards to form a limiting chuck 1110, in this embodiment, each first head unit can extend to form a limiting chuck 1110, and the adjacent limiting chucks 1110 are arranged at different ends of the upper side of the outer wall of the corresponding first head unit; namely, when the external side of the lead side insulating framework 1 is observed along the radial direction, the two limiting chucks arranged on the adjacent first head units are close to or far away from each other; correspondingly, the corresponding end of the opening part of the outer wall groove 2010 matched with the first head unit provided with the limiting clamp head 1110 is provided with a limiting buckle 2011, the limiting buckle 2011 extends along the circumferential direction, the limiting clamp head 1110 is matched with the limiting buckle 2011, and the drawing shows that the first head unit protrudes out of the upper surface of the end cover body 20.

Similarly, the lead-side insulating bobbin 1 and the fixing end cap 2 are further connected by a second fixing portion, specifically, the single second member includes a second root portion 120 and a second head portion 121, the second root portion 120 extends in the axial direction, the second head portion 121 also extends in the axial direction, that is, the second head portion 121 is formed by extending upward from the upper end surface of the second member 12, and the second head portion 121 is disposed in the inner wall groove 2020. The second head portion 121 includes two mounting posts 1210 disposed on two sides of the upper end surface of the second root portion 120, and the two mounting posts 1210 are respectively disposed in two grooves of the inner wall groove 2020.

In this embodiment, an inner wall connecting portion 2020-1 is provided between the two inner wall grooves 2020, the two inner wall grooves 2020 are symmetrically arranged with a center line 2020b of the inner wall connecting portion 2020-1 as a symmetry axis, and the center line 2020b of the inner wall connecting portion 2020-1 is perpendicular to the inner wall of the end cover between the two inner wall grooves 2020, that is, for the annular fixed end cover 2, the center line 2020b of the inner wall connecting portion 2020-1 is a straight line passing through a diameter of a center point of the inner wall of the end cover between the two inner wall grooves 2020; in one embodiment, a straight line of the inner wall 2020a where the two inner wall recesses 2020 are close to each other is parallel to a center line 2020b of the inner wall connecting portion 2020-1, that is, the two inner wall recesses 2020 have a rectangular shape.

Preferably, in order to enhance the connection between the lead-wire-side insulating frame 1 and the fixed end cap 2 and avoid falling off, as shown in fig. 3 and 4, a straight line where inner walls 2020a of the two inner wall grooves 2020 approach each other and a center line 2020b of the inner wall connecting portion 2020-1 have a small included angle α, preferably an included angle α is equal to 5 °, so that the cross section of the inner wall connecting portion 2020-1 is approximately isosceles trapezoid, that is, the inner walls 2020a are inclined with respect to the diameter of the end cap body passing through a connection point of the inner walls 2020a of the inner wall grooves 2020 approaching each other and the inner wall of the end cap between the two inner wall grooves 2020, so that the width of the end of the inner wall groove 2020 approaching the radial outer side is greater than the length of the end thereof approaching the radial inner side, and a structure with "outer width and.

Furthermore, a plurality of first slots 1100 are formed in the first portion 11, the first slots 1100 penetrate from the upper end surface of the first portion 11 to the lower end surface thereof, that is, the first slots 1100 extend from the upper end surface of the first root 110 to the lower end surface of the first root 110, so that the first slots 1100 divide the first portion into a plurality of independent first member units 11a, that is, the first slots 1100 extend from the upper end surface of the first member to the corresponding positions of the upper end surface of the connecting member 13 along the circumferential direction. And a plurality of the first head units are respectively disposed above the first root portions 110 of the first member units 11 a; preferably, the second member 12 is located at an opposite position of the first channel 1100, that is, when viewed from the outside of the insulating frame, a part or the whole of the second member 12 can be seen through the first channel 1100, and preferably, the second member 12 is located between the adjacent first member units 11a, that is, the whole of the second member 12 can be seen through the first channel 1100.

The utility model discloses an innovation point still lies in set up first winding 1101 on two lateral walls of first cell body 1110 to make the wire of three-phase can the layering setting, need not to dispose insulating tube in addition and can realize not having alternate contact each other, simplified technology, also be every all be provided with first winding on two lateral walls of first root unit.

In addition, a limiting protrusion 112 extends outwards from the outer wall of the first component unit 11a, and in one embodiment, the limiting protrusion 112 is located on the outer wall of the first root unit; preferably, the limiting protrusion 112 is formed by extending the outer wall of the first component unit 11a radially outward, and in the actual processing process, the limiting protrusion 112 generally needs to be formed by means of a die, so that the formed limiting protrusion 112 is limited by the processing technology and the processing cost, and a deviation situation may occur, that is, the limiting protrusion 112 extends non-radially, and the structure of the deviated limiting protrusion 112 is also within the protection scope of the present invention. Furthermore, the two limiting protrusions 112 on the outer wall of adjacent first root units have different heights, i.e. the two limiting protrusions 112 have different distances from the second part 10, so as to achieve a better separation effect.

In one embodiment, for the lead-side insulating framework, the second part 10, the first part 11 and the fixed end cap 2 are sized so that the outer diameter of the second part 10 is larger than that of the first part 11, and the outer diameter of the fixed end cap 2 is also larger than that of the first part 11, so that a structure with two wide ends and a narrow middle part is formed, and the transition line is prevented from being damaged in the assembling process.

Through first winding portion can realize setting up the wire layering of three-phase, need not insulation support, can avoid at the coplanar and the alternate contact that produces, the structure of first winding portion can be set for as required, gives four embodiments of first winding portion below, and the deformation that the structure of other first winding portions according to following four embodiments goes on is also in the protection scope of the utility model.

Example one

Referring to fig. 1, 5 and 6, two installation spaces 1102 extend from two inner walls of the first tank 1100 in the circumferential direction, the two installation spaces 1102 divide the inner wall of the first tank 1100 into three groove-shaped regions, that is, three installation grooves 1101, and the three installation grooves 1101 and the two installation spaces 1102 together form a first winding part; and the depth of the mounting grooves 1101 is the same, for the actual requirement, the depth of each mounting groove 1101 needs to be greater than or equal to 2mm, or it can be said that three mounting grooves 1101 are sequentially formed in the two side walls of the first root unit from the bottom end of the first root unit, during assembly, three-phase wires are respectively wound into different mounting grooves, and then the assembly can be simply, conveniently and quickly realized by matching with the limiting protrusions 112.

In actual processing, in order to provide forming efficiency, simplify the forming method, or reduce the forming cost, the installation space 1102 is generally formed by a die-drawing method, so that the actual formed installation space 1102 may have an offset compared with the circumferential direction, and the "offset" installation space 1102 formed for saving the processing cost and the processing flow is also within the protection scope of the present invention.

Example two

Please refer to fig. 7 and fig. 8, the present embodiment is a further optimization of the first embodiment, and is different from the first embodiment in that: at least one of the two fitting spaces 1102 on at least one of the two side walls of the first tank 1100 extends radially outward and exceeds the outer wall of the first unit 11a, that is, one end of the fitting space 1102 exceeds the outer circumference of the first unit 11a, which can prevent the transition line wound around the fitting groove 1101 from being shifted to some extent.

The installation space 1102 extends along the radial direction outside of the first portion 11 to form a protrusion body 1102-1 on the outer circumference of the first portion 11, the structure of the protrusion body 1102-1 may be not only the structure shown in fig. 7 and 8, but also other structures, that is, the cross section of the protrusion body 1102-1 may be the same as or smaller than the corresponding installation space 1102; in addition, the position of the protruding body 1102-1 can be set at the edge of the corresponding installation space 1102 (i.e. the side of the protruding body 1102-1 close to the first slot body and the side of the corresponding installation space 1102 close to the first slot body are on the same plane); or may be located at a position displaced by a certain distance from the edge of the installation space 1102 toward a direction away from the corresponding first groove 1100, as long as the upper end surface and the lower end surface of the protrusion body 1102-1 do not exceed the upper end surface and the lower end surface of the installation space 1102 corresponding thereto; the term "corresponding" refers to that for a certain protrusion body 1102-1, the installation interval 1102 where the certain protrusion body is located is the corresponding installation interval.

As shown in fig. 7 and 8, the height of the protrusion body 1102-1 is the same as the structure of the installation space 1102, that is, the upper and lower end surfaces of the protrusion body 1102-1 are flush with the upper and lower end surfaces of the installation space 1102, while in other embodiments, the height of the protrusion body 1102-1 is lower than the height of the installation body, and the upper and lower end surfaces of the protrusion body 1102-1 do not exceed the upper and lower end surfaces of the installation space 1102, so that the transition line wound on the installation groove 1101 is prevented from being shifted, and the protrusion body 1102-1 is prevented from affecting the normal winding of the transition line. In addition, the number of the protruding bodies 1102-1 ranges from 1 to 4, that is, for one first slot 1100, it has 4 installation intervals 1102, continuing the aforementioned name, that is, there are 4 installation intervals 1102 on two side walls of the first slot 1100, that is, there are two installation intervals 1102 on each side wall, and the number of the protruding bodies is 1 to 4, that is, there are protruding bodies 1102-1 on the outer side end face of at least one installation interval 1102, it is shown in fig. 7 and 8 that the number of the protruding bodies 1102-1 is 2, and two protruding bodies 1102-1 are located on the same side, obviously, in other embodiments, the number of the protruding bodies 1102-1 is 1 to 4, which have different arrangement manners, which are only given in this embodiment and the drawings, however, other arrangements are also within the scope of the present invention.

In addition, in the actual forming process, in view of the forming cost, the forming efficiency, and the like, the protrusion body 1102-1 is formed by a die-drawing method, and the formed protrusion body 1102-1 generally has a certain offset with respect to the radial direction, that is, the protrusion body does not extend in the radial direction, and this structure of the protrusion body for saving the cost is also within the protection scope of the present invention.

EXAMPLE III

In this embodiment, the assembling place of the three-phase wires in the first winding part is stepped, that is, different wires are assembled on different steps, thereby realizing the layering of the three-phase wires. With reference to fig. 2, 9 and 10, a first mounting groove 1111 and a second mounting groove 1112 are sequentially formed on two side walls of the first tank 1100 from one end close to the second portion 10 to the upper side, the depth of the first mounting groove 1111 is smaller than that of the second mounting groove 1112, the first mounting groove 1111 and the second mounting groove 1112 divide the inner wall of the first tank 1100 into three steps, which are a first step 1103, a second step 1104 and a third step 1105 from the bottom to the upper side, and the distances from the first step 1103, the second step 1104 and the third step 1105 to the center line of the first tank 1100 are sequentially increased, that is, the three steps on the two side walls of the first tank 1100 extend in the direction away from each other; the wires of different phases are fitted on the vertical surfaces of the first-stage step 1103, the second-stage step 1104, and the third-stage step 1105, respectively, that is, the first-stage step 1103, the second-stage step 1104, and the third-stage step 1105 constitute a first winding portion.

Example four

As shown in fig. 11 and 12, this embodiment is further optimized by the third embodiment, and is different from the third embodiment in that: one of the first-stage step 1103, the second-stage step 1104 and the third-stage step 1105 on at least one of the two side walls of the first groove 1100 extends along the radial direction and the axial direction of the lead-side insulating skeleton and extends to the outer side of the outer wall of the first member unit 11a to form a protrusion body 1106, that is, the protrusion body 1106 is located on the outer circumference of the first member unit 11a, and the upper end surface and the lower end surface of the protrusion body 1106 do not exceed the corresponding first-stage step 1103, second-stage step 1104 and third-stage step 1105, wherein "corresponding" specifically means that the upper end surface and the lower end surface of the protrusion body 1106 arranged on the first-stage step 1103, second-stage step 1104 or third-stage step 1105 do not exceed the corresponding first-stage step 1103, second-stage step 1104 or third-stage step 1105, and fig. 12 shows the position and structure of the protrusion body 1106, in this embodiment, the upper end face of the protrusion body 1106 is flush with the upper end face of the corresponding step, and the lower end face of the protrusion body 1106 is higher than the lower end face of the corresponding step, so that the transition line wound on the step is not affected, and the transition line wound on the mounting groove 1101 can be prevented from being deviated to a certain extent by arranging the protrusion body 1106.

Taking the first-order step 1103 as an example, the first-order step has a vertical surface, a horizontal surface, an inner side surface and an outer side surface, wherein the vertical surface is a surface of the two first-order steps 1103 facing each other, the horizontal surface is equivalent to the upper end surface of the first-order step 1103, the inner side surface is located on the inner wall of the first component unit 11a, and the outer side surface is located on the outer circumferential surface of the first component unit 11 a. One of the first-order step 1103, the second-order step 1104 and the third-order step 1105 on at least one of the two side walls of the first groove 1100 extends along the radial direction of the lead-side insulating frame and extends to the outer side of the outer wall of the first member unit 11a to form a protruding body 1106, the above description includes various different setting modes of the protruding body 1106, the number range of the protruding body 1106 is 1-6, the position of the protruding body 1106 can be on the outer side surface of one of the 6 first-order step 1103, the second-order step 1104 and the third-order step 1105, and according to the number of the protruding body 1106, the utility model discloses all distribution modes of the protruding body 1106 are included.

Similarly, in the actual forming process, in view of the forming cost, the forming efficiency, and the like, the protrusion body 1106 is formed by a die-drawing manner, and the formed protrusion body 1106 generally has a certain offset with respect to the radial direction, that is, the protrusion body does not extend along the radial direction, and this structure of the protrusion body for saving the cost is also within the protection scope of the present invention.

With continuing reference to fig. 13 and 14, the stator of the present invention includes a stator core, a stator winding, and insulating frames disposed at two ends of the stator core, wherein the stator core is formed by laminating a plurality of layers of plate-shaped members, and has a yoke portion 30 extending along a circumferential direction and a plurality of tooth portions 31 extending along a radial direction, as viewed from an axial right-angle cross section, the tooth portions 31 have tooth base portions 310 extending from the yoke portion 30 along the radial direction to an inner circumferential side, and tooth tip portions 311 disposed at the radial inner circumferential side of the tooth base portions 310 and extending along the circumferential direction, and two ends of the tooth tip portions 311 form tooth tip portions 312; the width of the tooth front end tip 312 is H, that is, the tooth front end tip 312 is formed by extending two sides of the tooth front end 311 along the circumferential direction, the length of the tooth front end tip 312 is H, that is, the distance from the joint with the tooth front end 311 to the end of the tooth front end tip 312 is H, in this embodiment, the distance H is less than 2.5 mm; preferably, the distance H is greater than 1.8mm and less than 2 mm.

The stator winding is wound on the tooth base part of the stator core and the insulating framework in a concentrated winding mode; and the insulating framework adopts the insulating framework of the stator.

During assembly, the connecting member of the lead-side insulating frame and the connecting member of the reverse lead-side insulating frame are respectively arranged above the teeth 31 at the two ends of the stator core, and the stator winding is wound on the tooth base part, the connecting member of the lead-side insulating frame and the connecting member of the reverse lead-side insulating frame, that is, the first groove 1100 on the lead-side insulating frame corresponds to the groove of the stator core.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (13)

1. Insulating skeleton of stator characterized by, includes:

the lead side insulating framework and the reverse lead side insulating framework are respectively arranged at two ends of the stator core;

the lead wire side insulating skeleton includes:

a first member extending in a circumferential direction and an axial direction;

a plurality of second members that are provided at intervals from each other in a circumferential direction on a radially inner side of the first member and that extend in the circumferential direction;

a plurality of connecting members for connecting the second member and the first member;

the fixed end cover is arranged on the lead side insulating framework and used for pressing the outgoing line of the stator winding; the stationary end cap includes an end cap body extending circumferentially and axially, the end cap body including:

the end cover outer wall is provided with a first fixing part which is embedded at the upper end of the first component;

and a plurality of second fixing parts are arranged on the inner wall of the end cover at intervals along the circumferential direction, and the second fixing parts are respectively embedded at the upper ends of the second components.

2. The insulating framework of the stator as claimed in claim 1, wherein the first member has a first head portion extending upward along the axial direction on the upper end surface thereof, the first head portion being adapted to the first fixing portion;

and a second head part extends upwards along the axial direction on the upper end surface of the second component, and the second head part is matched with the second fixing part.

3. The insulating skeleton of stator according to claim 2, characterized in that, the first fixing portion comprises a plurality of outer wall grooves arranged on the edge of the outer wall of the end cover, and the outer wall grooves are arranged at intervals along the outer circumference of the end cover body; the first head comprises a plurality of first head units arranged at intervals along the circumferential direction, and when the fixed end cover is installed on the lead side insulating framework, the plurality of first head units are respectively arranged in the plurality of outer wall grooves;

the second fixing part comprises two inner wall grooves which are arranged along the circumferential direction of the inner wall of the end cover; the second head comprises two mounting columns, the two mounting columns are arranged on two sides of the upper end face of the second component respectively and extend upwards along the axial direction of the upper end face of the second component, and when the fixing end cover is mounted on the lead side insulating framework, the two mounting columns are arranged in the two inner wall grooves respectively.

4. The insulating framework of the stator as claimed in claim 3, wherein one side of the opening part of the at least one outer wall groove extends along the circumferential direction to form a limiting buckle, one end of the upper side of the outer wall of the at least one first head unit extends along the circumferential direction to form a limiting chuck, and the limiting buckle is matched with the limiting chuck;

an inner wall connecting part is arranged between the two inner wall grooves, the two inner wall grooves are symmetrically arranged by taking the center line of the inner wall connecting part as a symmetry axis, the center line of the inner wall connecting part is perpendicular to the inner wall of the end cover between the two inner wall grooves, and the included angle between the straight line of the inner walls, close to each other, of the two inner wall grooves and the center line of the inner wall connecting part is α -5 degrees.

5. The insulating framework of the stator as claimed in claim 1 or 2, wherein the first member is provided with a plurality of first grooves, the first grooves extend along the axial direction and extend from the upper end surface of the first member to the corresponding positions of the upper end surface of the connecting member along the axial direction, and the first grooves divide the first member into a plurality of first member units; when the outer circumference of the insulating framework is observed inwards, the second member and the first groove body are arranged in opposite directions.

6. The insulating framework of the stator as claimed in claim 5, wherein two installation intervals extend from two side walls of the first slot body along the circumferential direction, the two installation intervals divide the inner wall of the first slot body into three installation slots, and the three installation slots have the same depth;

or the two side walls of the first groove body are sequentially provided with a first step, a second step and a third step from bottom to top, and the distances between the vertical surfaces of the first step, the second step and the third step are sequentially increased.

7. The insulating framework of the stator as claimed in claim 6, wherein a plurality of protruding bodies are arranged on the outer wall of the first component unit, and the protruding bodies are positioned on two side edges of the first component unit; the projection body extends outward from an outer wall of the first member unit and extends in an axial direction and a circumferential direction.

8. The insulating framework of the stator as claimed in claim 7, wherein the outer end face of one of the two mounting intervals on at least one side wall of the first slot body extends outwards to form the convex body; the upper end face and the lower end face of the protrusion body do not exceed the corresponding upper end face and the corresponding lower end face of the installation interval.

9. The insulating framework of the stator as claimed in claim 7, wherein the outer end face of at least one of the first step, the second step and the third step on at least one side wall of the first slot extends outwards to form the protruding body, and the upper end face and the lower end face of the protruding body do not exceed the upper end face and the lower end face of the corresponding first step, the corresponding second step and the corresponding third step.

10. The insulating skeleton of stator according to claim 6, characterized in that, there are limiting protrusions on the outer wall of the first member unit, the limiting protrusions extend outwards from the outer wall of the first member unit, and two limiting protrusions on adjacent first member units have different distances from the upper end of the first member unit.

11. The insulating skeleton of the stator according to any one of claims 6 to 10, wherein the first member includes a first portion and a second portion arranged up and down, the first slot extends axially downward from an upper end surface of the first portion to a lower end surface thereof, the second portion is arranged on the lower end surface of the first portion, and the connecting member is connected between an inner wall of the second portion and a radially outer side of a lower end of the second member; wherein the outer diameter of the first portion is less than the outer diameter of the second portion, and the outer diameter of the first portion is less than the outer diameter of the stationary end cap.

12. A stator comprising a stator core, a stator winding, and insulating bobbins arranged at both ends of the stator core, wherein the stator core is formed by laminating a plurality of plate-like members, and has a yoke portion extending in a circumferential direction and a plurality of tooth portions extending in a radial direction, as viewed in an axial right-angle cross section, the tooth portions having tooth base portions extending from the yoke portion to an inner circumferential side in the radial direction, and tooth tip portions provided on a radially inner circumferential side of the tooth base portions and extending in the circumferential direction, both ends of the tooth tip portions forming tooth tip portions; the width of the tip part of the front end of the tooth is H, and H is less than 2.5 mm;

the stator winding is wound on the tooth base part of the stator core and the insulating framework in a concentrated winding mode;

the insulating framework is the insulating framework of the stator of any one of claims 1 to 11.

13. A miniature concentrated coil motor comprising a rotor and a stator, wherein the stator is the stator of claim 12.

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