A stator insulation frame and a stator and a motor having the same

By designing the upper and lower skeletons of the stator insulated skeleton, combined with the limit groove and support frame, the problems of loose windings and poor voltage resistance in the motor are solved, achieving more efficient production and lower costs.

CN112910120BActive Publication Date: 2025-03-14CHONGQING KAIBANG MOTOR +2
View PDF 3 Cites 0 Cited by

Patent Information

Application Number
CN202110261046.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-03-10
Publication Date
2025-03-14
Estimated Expiration
2041-03-10

AI Technical Summary

Technical Problem

In the existing motor, the stator insulating skeleton has the problem that the winding is easily loosened and exposed or tightened, and the bridge line is easily contacted with the metal of the external end cap on the outside of the frame baffle, resulting in poor pressure resistance.

Method used

A stator insulating skeleton is designed, including an upper skeleton and a lower skeleton, connected to the stator core through a limiting groove to form a winding groove and a through-line groove. The bridge line of the winding passes through the through-line groove. The support frame of the lower skeleton is used to support and adjust the tightness of the cross-line.

Benefits of technology

Effectively prevent the cross-bridge line of the winding from being loosened or tightened and broken, improve the problem of poor pressure resistance caused by the wiring on the outer side of the insulating skeleton baffle, simplify the structure, reduce production costs, improve production efficiency, and solve the problems of waste of circuit board materials and quality risks.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN112910120B_ABST
    Figure CN112910120B_ABST
Patent Text Reader

Abstract

The invention provides a stator insulating frame and a stator and a motor having the same, wherein the stator comprises a stator core and a winding; the insulating frame comprises an upper frame and a lower frame; the upper frame is formed with a first winding slot and a first wire passing slot, and the lower frame is formed with a second winding slot and a second wire passing slot; the first winding slot and the second winding slot are used for winding the winding, and the first wire passing slot and the second wire passing slot are used for passing a bridge wire of the winding; the lower frame is formed with a support frame for supporting the bridge wire of the winding; the upper frame, the lower frame and the stator core are connected through a limit piece and a limit slot; when the above-mentioned stator insulating frame is applied to the stator, a plurality of stator cores are connected with a plurality of upper frames and a plurality of lower frames respectively, and the winding is wound in the first winding slot and the second winding slot; the bridge wire of the winding passes through the first wire passing slot and the second wire passing slot and extends; the invention has a simple structure, is easy to operate, and has a high production efficiency, and the tightness of the bridge wire of the winding is accurately controlled by the support frame of the lower frame.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a stator insulation frame and a stator and a motor having the same. Background Art

[0002] The motor body is generally composed of a stator, a rotor, an end cover and other parts. The stator includes a stator core, an insulating frame and a winding. The insulating frame currently used in motors has many defects. For example, when the stator is round, the winding in the wire slot is easy to loosen and expose or be tightened and broken due to the limitation of the wiring method.

[0003] Patent application number 201520348503.8 proposes a motor insulation skeleton and a motor having the same, which can improve the above-mentioned problems to a certain extent; however, there are great limitations, and the tightness of the bridge wire can only be adjusted by the depth of the wire slot; for stators with thin skeleton thickness and compact stator core structure, the problem of loose bridge wire or abnormal tension and breaking cannot be solved by changing the depth of the wire slot; at the same time, the bridge wire is routed on the outside of the skeleton baffle, and it is very easy to contact the metal of the external end cover and cause poor voltage resistance; in addition, the stator of this method requires a circuit board, which increases the material cost and height of the motor, makes the motor space volume larger, and also needs to consider the quality risks of loosening of the circuit board and broken winding during transportation. Summary of the invention

[0004] In view of this, the present invention provides a stator insulation frame and a stator and a motor having the same, so as to solve the problems in the prior art that the winding is easy to loosen and expose or be tightened and thus broken.

[0005] The present invention provides a stator insulation frame, the stator comprises a stator core and a winding, the stator core forms a limiting groove; the insulation frame comprises an upper frame and a lower frame; the upper frame and the lower frame are connected to the stator core through the limiting groove; the upper frame is formed with a first winding slot and a first wire passing slot, the lower frame is formed with a second winding slot and a second wire passing slot; the first winding slot and the second winding slot are used for winding the winding, and the first wire passing slot and the second wire passing slot are used for passing a bridge wire of the winding;

[0006] A support frame is formed at both ends of the lower frame for supporting the bridge wire of the winding.

[0007] Further optionally, the support frame includes a base frame, a connecting arm and a support arm; the bottom of the base frame is fixed on the lower frame, the connecting arm extends from the base frame to the left or right side of the base frame, and the support arm extends from the end of the connecting arm to the top or bottom of the connecting arm; the support arms of the support frames located at both ends of the lower frame extend in opposite directions.

[0008] Further optionally, the distance that the connecting arm extends relative to the left or right side of the base is adjustable, and the direction in which the connecting arm extends toward the left or right side of the base is the direction in which two adjacent stator cores are connected; by adjusting the position of the connecting arm relative to the base, the tightness of the bridge wire of the winding can be adjusted, thereby preventing the bridge wire of the winding from being loosened and exposed or being tightened and broken.

[0009] Further optionally, the support frame comprises a first support frame and a second support frame, and is relatively arranged on two sides of the lower frame; the support arm of the first support frame extends upward, and the support arm of the second support frame extends downward;

[0010] When the plurality of lower frames form a straight strip or a circle, the first support frame and the second support frame of two adjacent lower frames form a support structure to support the bridge wire of the winding.

[0011] Further optionally, the upper frame has a first outer baffle plate, a first inner baffle plate and a first connecting portion; the first outer baffle plate and the first inner baffle plate are relatively arranged on both sides of the first connecting portion and are connected through the first connecting portion; a first wire column is formed between the first outer baffle plate and the first inner baffle plate.

[0012] Further optionally, the first wire-passing groove is formed between the first outer baffle plate and the first wire-passing post; and the first winding groove is formed between the first inner baffle plate and the first wire-passing post.

[0013] Further optionally, a first limiting member extending downwardly toward the upper frame is formed at the bottom of the first connecting portion; the outside of the first limiting member can be clamped in the limiting groove to connect the upper frame to the upper end of the stator core; and a third winding slot is formed inside the first limiting member for winding the winding.

[0014] Further optionally, there are two first limiting members, which are arranged on both sides of the upper frame and are symmetrical with respect to the center of the upper frame.

[0015] Further optionally, a slot is formed on the first outer baffle plate for fixing the power cord; the slot entrance width is smaller than the outer diameter of the power cord, and the slot forms a stress buffer zone to accommodate deformation of the power cord.

[0016] Further optionally, the lower frame has a second outer baffle plate, a second inner baffle plate and a second connecting portion; the second outer baffle plate and the second inner baffle plate are relatively arranged on both sides of the second connecting portion and are connected through the second connecting portion; a second wire column is provided between the second outer baffle plate and the second inner baffle plate.

[0017] Further optionally, the second wire-passing groove is formed between the second outer baffle plate and the second wire-passing post; and the second winding groove is formed between the second inner baffle plate and the second wire-passing post.

[0018] Further optionally, a second limiting member extending upwardly from the lower frame is formed at the top of the second connecting portion; the outside of the second limiting member can be clamped in the limiting groove to connect the lower frame to the lower end of the stator core; and a fourth winding slot is formed inside the second limiting member for winding the winding.

[0019] Further optionally, there are two second limiting members, which are arranged on both sides of the lower frame and are symmetrical with respect to the center of the lower frame.

[0020] Further optionally, the upper frame and / or the lower frame are provided with pins, and the bridge wires of the winding pass through the first wire groove and the second wire groove, and the ends of the bridge wires can be fixed to the pins.

[0021] The present invention also provides a stator, comprising a stator core, a winding and a stator insulation frame as described in any one of the above items; when a plurality of the stator cores form a straight bar shape, a plurality of the upper frames and the lower frames are respectively connected to the corresponding stator cores; the winding is wound in the first winding slot, the second winding slot, the third winding slot and the fourth winding slot; the bridge wire of the winding extends through the first wire slot and the second wire slot;

[0022] When the plurality of stator cores form a circle, the support frames of the adjacent lower frames support the bridge wires of the windings.

[0023] Further optionally, when the plurality of stator cores form a straight strip, the length of the bridge wire of the winding between the center lines of two adjacent stator insulation skeletons is L1; when the plurality of stator cores form a circle, the length of the bridge wire of the winding between the center lines of two adjacent stator insulation skeletons is L2; ​​by designing the length of the connecting arm of the lower skeleton or adjusting the distance between the connecting arm of the lower skeleton and the base frame, 0 <L1-L2<3mm。

[0024] The present invention also provides a motor having the stator insulation frame described in any one of the above items or the stator described in any one of the above items.

[0025] The present invention provides a stator insulation frame, the stator comprises a stator core and a winding, the insulation frame comprises an upper frame and a lower frame; a first winding slot and a first wire passing slot are formed on the upper frame, and a second winding slot and a second wire passing slot are formed on the lower frame; the first winding slot and the second winding slot are used for winding the winding, and the first wire passing slot and the second wire passing slot are used for passing the bridge wire of the winding; a support frame is formed on the lower frame for supporting and adjusting the tightness of the bridge wire of the winding; a first limiting piece is formed below the upper frame, which cooperates with the limiting slot of the stator core to realize the connection between the upper frame and the stator core; a second limiting piece is formed above the lower frame, which cooperates with the limiting slot of the stator core to realize the connection between the lower frame and the stator core; when the above-mentioned stator insulation frame is applied to the stator, a plurality of upper frames and lower frames are respectively connected to the corresponding stator cores. The core is connected, and the winding is wound in the first winding slot and the second winding slot; the bridge wire of the winding extends through the first wire slot and the second wire slot; the support frame of the adjacent lower skeleton supports the bridge wire of the winding and adjusts the tightness of the bridge wire of the winding; the support structure formed by the adjacent support frames in the present invention can effectively improve the poor tightness of the bridge wire of the traditional skeleton winding; in addition, the bridge wire of the winding is routed through the wire slot, which solves the problem of looseness or abnormal tension of the bridge wire of the winding, and improves the hidden dangers of poor withstand voltage caused by the bridge wire of the winding contacting the metal of the external end cover due to the routing outside the insulating skeleton baffle; the present invention has a simple structure, low production cost, easy operation, and high production efficiency, and can effectively solve the problems of waste of circuit board materials, waste of motor space structure, easy loosening of the circuit board, and increased risk of winding wire breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0027] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0028] Figure 1 A schematic structural diagram of an embodiment of a stator insulation frame provided by the present invention;

[0029] Figure 2a , Figure 2b and Figure 2cA schematic diagram of the structure of a stator assembly embodiment provided by the present invention;

[0030] Figure 3 A schematic diagram of the structure of a stator explosion embodiment provided by the present invention;

[0031] Figure 4a and Figure 4b A schematic diagram of the structure of an embodiment of the present invention when the stator is formed into a straight strip shape;

[0032] Figure 5a and Figure 5b A schematic diagram of the structure of an embodiment of the present invention in which the stator is formed into a circular shape;

[0033] In the figure:

[0034] 1-upper frame; 11-first outer baffle; 111-first wire slot; 112-cage slot; 12-first wire post; 121-first winding slot; 13-first inner baffle; 14-first connecting portion; 15-first stopper; 151-third winding slot; 16-pin;

[0035] 2-lower frame; 21-second outer baffle; 211-second wire slot; 22-second wire post; 221-second winding slot; 23-second inner baffle; 24-second connecting portion; 25-second stopper; 251-fourth winding slot; 26-support frame; 261-base frame; 262-connecting arm; 263-support arm;

[0036] 3-stator; 31-stator core; 311-limiting groove;

[0037] 41-power cord; 42-connection terminal. DETAILED DESCRIPTION

[0038] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0040] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0042] The present invention provides a stator insulating frame, wherein the stator comprises a stator core and a winding, and the insulating frame comprises an upper frame and a lower frame; a first winding slot and a first wire-passing slot are formed on the upper frame, and a second winding slot and a second wire-passing slot are formed on the lower frame; the first winding slot and the second winding slot are used for winding the winding, and the first wire-passing slot and the second wire-passing slot are used for passing a bridge wire of the winding; a support frame is formed on the lower frame for supporting and adjusting the tightness of the bridge wire of the winding; a first limiting piece is formed below the upper frame, which cooperates with the limiting slot of the stator core to realize the connection between the upper frame and the stator core; a second limiting piece is formed above the lower frame, which cooperates with the limiting slot of the stator core to realize the connection between the lower frame and the stator core; the first limiting piece The third winding slot and the fourth winding slot are respectively formed inside the positioning member and the second limiting member for winding the winding; when the above-mentioned stator insulation frame is applied to the stator, multiple upper frames and lower frames are respectively connected to the corresponding stator core, and the winding is wound in the first winding slot, the second winding slot, the third winding slot and the fourth winding slot; the bridge wire of the winding extends through the first wire slot and the second wire slot; the support frame of the adjacent lower frame supports the bridge wire of the winding, and adjusts the tightness of the bridge wire of the winding by the position of the connecting arm; the present invention has a simple structure, is easy to operate, and has high production efficiency. It can accurately control the tightness of the bridge wire of the stator winding, and effectively solves the problems of loose circuit board and increased quality risk of winding breakage.

[0043] Example

[0044] <Insulation frame>

[0045] like Figure 1As shown, this embodiment provides a stator insulation frame, wherein the stator 3 includes a stator core 31 and a winding, and the stator core 31 forms a limiting groove 311; the insulation frame includes an upper frame 1 and a lower frame 2 installed at both ends of the limiting groove 311 of the stator core 31; the upper frame 1 is formed with a first winding groove 121 and a first wire groove 111, and the lower frame 2 is formed with a second winding groove 221 and a second wire groove 211; the first winding groove 121 and the second winding groove 221 are used for winding the winding, and the first wire groove 111 and the second wire groove 211 are used for passing the bridge wire of the winding;

[0046] Specifically, the limiting grooves 311 include two and are respectively arranged on both sides of the stator core 31; the upper frame 1 is arranged at the upper end of the stator core 31, and the lower frame 2 is arranged at the lower end of the stator core 31; the first winding groove 121 and the first wire groove 111 are formed at the top of the upper frame 1; the second winding groove 221 and the second wire groove 211 are formed at the bottom of the lower frame 2; the first winding groove 121 and the second winding groove 221 are arranged on the same side to facilitate winding; the first wire groove 111 and the second wire groove 211 are arranged on the same side to facilitate the passage of the winding bridge wire.

[0047] The lower frame 2 is formed with a support frame for supporting and adjusting the tightness of the bridge wire of the winding; specifically, the support frames between adjacent lower frames 2 can form a support structure to support the bridge wire of the winding.

[0048] <Stator unit>

[0049] like Figure 2a , Figure 2b and Figure 3 As shown, the stator unit provided in this embodiment is composed of an upper frame 1, a stator core 31, a winding and a lower frame 2, which are arranged in sequence; the upper frame 1 has a first outer baffle plate 11, a first inner baffle plate 13 and a first connecting portion 14; the first outer baffle plate 11 and the first inner baffle plate 13 are relatively arranged on both sides of the first connecting portion 14, and are connected by the first connecting portion 14; a first wire-passing post 12 is formed between the first outer baffle plate 11 and the first inner baffle plate 13; a first wire-passing slot 111 is formed between the first outer baffle plate 11 and the first wire-passing post 12; and a first winding slot 121 is formed between the first inner baffle plate 13 and the first wire-passing post 12.

[0050] Preferably, a first limiting member 15 extending downwardly from the upper frame 1 is formed at the bottom of the first connecting portion 14; the outside of the first limiting member 15 can be clamped in the limiting groove 311 to connect the upper frame 1 with the upper end of the stator core 31; a third winding groove 151 is formed inside the first limiting member 15 for winding the winding.

[0051] In some preferred embodiments, there are two first limiting members 15 disposed on both sides of the upper frame 1 and symmetrically relative to the center of the upper frame 1 , and correspondingly there are two limiting grooves 311 corresponding to the positions of the first limiting members 15 .

[0052] like Figure 2c As shown, this embodiment provides an upper frame 1, on which a first outer baffle plate 11 is formed a card slot 112 for fixing an external power cord; the entrance width of the card slot 112 is smaller than the outer diameter of the external power cord, and the card slot 112 forms a stress buffer zone to accommodate the deformation of the external power cord; the external power cord enters the card slot 112 through the entrance of the card slot 112, and is limited and fixed by the stress buffer zone.

[0053] like Figure 2a , Figure 2b and Figure 3 As shown, the lower frame 2 provided in this embodiment has a second outer baffle plate 21, a second inner baffle plate 23 and a second connecting portion 24; the second outer baffle plate 21 and the second inner baffle plate 23 are relatively arranged on both sides of the second connecting portion 24, and are connected by the second connecting portion 24; a second wire-passing post 22 is provided between the second outer baffle plate 21 and the second inner baffle plate 23; a second wire-passing groove 211 is formed between the second outer baffle plate 21 and the second wire-passing post 22; a second winding groove 221 is formed between the second inner baffle plate 23 and the second wire-passing post 22.

[0054] Preferably, a second limiting member 25 extending upward from the lower frame 2 is formed at the top of the second connecting portion 24; the outer portion of the second limiting member 25 can be clamped in the limiting groove 311 to connect the lower frame 2 with the lower end of the stator core 31; a fourth winding groove 251 is formed inside the second limiting member 25 for winding the winding.

[0055] In some preferred embodiments, there are two second limiting members 25 , which are disposed on both sides of the lower frame 2 and are symmetrical with respect to the center of the lower frame 2 , corresponding to the positions of the two limiting grooves 311 of the stator core 31 .

[0056] Preferably, the support frame 26 includes a base frame 261, a connecting arm 262 and a support arm 263; the bottom of the base frame 261 is fixed on the lower frame 2, the connecting arm 262 extends from the base frame 261 to the left or right side of the base frame 261, and the support arm 263 extends from the end of the connecting arm 262 to the top or bottom of the connecting arm 262; the support arms 263 of the support frames 26 located at both ends of the lower frame 2 extend in opposite directions.

[0057] It should be noted that the connecting arm 262 is not limited to extending from the base frame 261 to the left or right side of the base frame 261, and can extend from the base frame 261 to the left front side, left rear side, right front side or right rear side of the base frame 261. The extension direction of the connecting arm 262 can be set according to actual needs.

[0058] Preferably, the distance that the connecting arm 262 extends relative to the left or right side of the base 261 is adjustable, and the direction in which the connecting arm 262 extends from the base 261 to the left or right side of the base 261 is the direction in which two adjacent stator cores 31 are connected; by adjusting the position of the connecting arm 262 relative to the base 261, the tightness of the winding bridge wire can be adjusted to prevent the winding bridge wire from being loosened and exposed or being tightened and broken;

[0059] Specifically, when the bridge wire of the winding is too loose, the position of the connecting arm 262 relative to the base frame 261 is increased so that the support arm 263 supports the bridge wire of the winding; when the bridge wire of the winding is too tight, the position of the connecting arm 262 relative to the base frame 261 is reduced so that the support arm 263 supports the bridge wire of the winding.

[0060] Preferably, the support frame 26 has a first support frame and a second support frame, and are relatively arranged on both sides of the lower frame 2; the support arm 263 of the first support frame extends upward, and the support arm 263 of the second support frame extends downward; when multiple lower frames 2 form a straight strip or a circle, the first support frame and the second support frame of two adjacent lower frames 2 are staggered and form a supporting structure, which supports the bridge line of the winding.

[0061] Preferably, the first winding slot 121 at the top of the upper frame 1, the third winding slot 151 at the bottom of the upper frame 1, the second winding slot 221 at the bottom of the lower frame 2, and the fourth winding slot 251 at the top of the lower frame 2 constitute winding slots for winding windings; the first wire passing slot 111 of the upper frame 1 and the second wire passing slot 211 of the lower frame 2 constitute wire passing slots for the bridge wires of the windings, which are used for the bridge wires between the windings to pass through;

[0062] The first outer baffle plate 11 of the upper frame 1 and the second outer baffle plate 21 of the lower frame 2 are arranged on the same side, the first inner baffle plate 13 of the upper frame 1 and the second inner baffle plate 23 of the lower frame 2 are arranged on the same side, the first limit member 15 of the upper frame 1 is clamped in the limit groove 311 at the upper end of the stator core 31, and the second limit member 25 of the lower frame 2 is clamped in the limit groove 311 at the lower end of the stator core 31, so as to realize the connection between the upper frame 1, the lower frame 2 and the stator core 31.

[0063] In some preferred embodiments, the upper frame 1 and / or the lower frame 2 are provided with pins 16 , and the bridge wires of the windings pass through the first wire groove 111 and the second wire groove 211 , and their ends can be fixed to the pins 16 .

[0064] It should be noted that, depending on the different gear positions of the motor, a plurality of pins 16 may be provided on the upper frame 1 or the lower frame 2 .

[0065] <Stator>

[0066] like Figure 4a , Figure 4b , Figure 5a and Figure 5b As shown in Figure 5a and Figure 5b , the stator provided in this embodiment is composed of a plurality of the above-mentioned stator units, and has a stator core 31, windings, and the stator insulation skeleton described in any one of the above. When a plurality of stator cores 31 are formed in a straight strip shape, a plurality of upper skeletons 1 and lower skeletons 2 are respectively connected to the corresponding stator cores 31; the windings are wound in the first winding slots 121, second winding slots 221, third winding slots 151, and fourth winding slots 251 of the stator unit; the jumper wires between the windings extend through the first wire passing slots 111 and the second wire passing slots 211.

[0067] When a plurality of stator cores 31 are formed in a circular shape, the first support frame and the second support frame of two adjacent lower skeletons 2 arch to form a support structure, which plays a supporting role for the jumper wires of the windings, thereby increasing the effective travel distance of the jumper wires of the windings; by adjusting the position of the connecting arm 262 relative to the base frame 261, the tightness of the jumper wires of the windings is further adjusted, effectively preventing the jumper wires of the windings from loosening and exposing or being tightened until they are broken.

[0068] Preferably, when a plurality of stator cores 31 are formed in a straight strip shape, the length of the jumper wire of the windings between the center lines of two adjacent insulation skeletons is L1; when a plurality of stator cores 31 are formed in a circular shape, the length of the jumper wire of the windings between the center lines of two adjacent stator insulation skeletons is L2; by designing the length of the connecting arm 262 of the lower skeleton 2 or adjusting the distance between the connecting arm 262 of the lower skeleton 2 and the base frame 261, such that 0 < L1 - L2 < 3 mm, thereby effectively solving the problem of abnormal loosening, exposure, tightening, or breaking of the jumper wires of the windings after the stator cores 31 are changed from a straight strip shape to a circular shape; specifically, when a plurality of stator cores 31 are formed in a circular shape, the length of the jumper wire of the windings between the center line of one stator insulation skeleton and the end of the support arm 263 of another stator insulation skeleton is a, the length of the jumper wire of the windings between the ends of the support arms 263 of the two stator insulation skeletons is c, and the length of the jumper wire of the windings between the end of the support arm 263 of one stator insulation skeleton and the center line of another stator insulation skeleton is b, then L2 = a + b + c.

[0069] Preferably, the end of the external power cord is welded to the pin 16 through the wiring terminal 42, and then the wire is passed along the first wire groove 111 and the second wire groove 211, and the external power cord is restricted and fixed by the card slot 112 of the upper frame 1; specifically, the external power cord enters the card slot 112 through the entrance of the card slot 112, and is limited and fixed by the stress buffer zone in the card slot 112 to ensure that the external power cord is prevented from being pulled out; the entrance distance P of the card slot 112 is generally not greater than the outer diameter of a single external power cord, and the stress buffer zone in the card slot 112 is that on the one hand, the external power cord can undergo slight elastic deformation during the process of passing through the card slot 112, which facilitates the external power cord to pass through, and avoids the insulation frame from being cracked due to the external force during the threading process; on the other hand, it can also prevent the external power cord from slipping out.

[0070] The stator can be made by the following methods:

[0071] First, the stator core 31 is formed into a straight strip, and a plurality of upper frames 1 and a plurality of lower frames 2 are correspondingly assembled on the stator core 31, and the equipment automatically assembles the pins 16 on the upper frames 1;

[0072] Secondly, the equipment automatically winds the winding in the winding slot, and the wire head and wire tail of the winding are respectively wound around the pin 16 of the upper frame 1;

[0073] Finally, the stator core 31 is formed into a circle and the connection of the stator core 31 is welded, and the end of the external power line is welded to the pin 16 through the terminal 42, and the other end is passed along the first wire groove 111 and the second wire groove 211, and passes through the slot 112 of the upper frame 1 to fix the external power line.

[0074] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A stator insulation frame, the stator comprising a stator core (31) and a winding, the stator core (31) forming a limiting groove (311); characterized in that: The insulating frame comprises an upper frame (1) and a lower frame (2); the upper frame (1) and the lower frame (2) are connected to the stator core (31) via the limiting groove (311); the upper frame (1) is formed with a first winding groove (121) and a first wire passing groove (111), and the lower frame (2) is formed with a second winding groove (221) and a second wire passing groove (211); the first winding groove (121) and the second winding groove (221) are used for winding the winding, and the first wire passing groove (111) and the second wire passing groove (211) are used for passing the bridge wire of the winding; A support frame (26) is formed on the left and right sides of the lower frame (2), respectively, and the support frame (26) comprises a base frame (261), a connecting arm (262) and a supporting arm (263); the base frame (261) is fixed on the lower frame (2), the connecting arm (262) extends from the base frame (261) to the left or right side of the base frame (261), and the supporting arm (263) extends from the end of the connecting arm (262) to the top or bottom of the connecting arm (262); the supporting arms (263) of the support frames (26) located on both sides of the lower frame (2) extend in opposite directions; When the plurality of lower frames (2) form a straight strip or a circle, the support frame between two adjacent lower frames (2) forms a support structure, and the support structure is used to support the bridge wire of the winding.

2. The stator insulation frame according to claim 1, characterized in that: The distance that the connecting arm (262) extends relative to the left side or right side of the base frame (261) is adjustable, and the direction in which the connecting arm (262) extends toward the left side or right side of the base frame (261) is the direction in which two adjacent stator cores (31) are connected.

3. The stator insulation frame according to claim 1, characterized in that: The support frame (26) comprises a first support frame and a second support frame, and is relatively arranged on the left and right sides of the lower frame (2); the support arm (263) of the first support frame extends upward, and the support arm (263) of the second support frame extends downward; When the plurality of lower frames (2) form a straight strip or a circle, the first support frame and the second support frame of two adjacent lower frames (2) form the support structure, which supports the bridge wire of the winding.

4. The stator insulation frame according to claim 1, characterized in that: The upper frame (1) comprises a first outer baffle plate (11), a first inner baffle plate (13) and a first connecting portion (14); the first outer baffle plate (11) and the first inner baffle plate (13) are arranged on both sides of the first connecting portion (14) and are connected via the first connecting portion (14); a first wire passing column (12) is formed between the first outer baffle plate (11) and the first inner baffle plate (13).

5. The stator insulation frame according to claim 4, characterized in that: The first wire-passing slot (111) is formed between the first outer baffle plate (11) and the first wire-passing post (12); and the first winding slot (121) is formed between the first inner baffle plate (13) and the first wire-passing post (12).

6. The stator insulation frame according to claim 4, characterized in that: A first limiting member (15) extending downwardly from the upper frame (1) is formed at the bottom of the first connecting portion (14); the outside of the first limiting member (15) can be clamped in the limiting groove (311) so that the upper frame (1) is connected to the upper end of the stator core (31); and a third winding groove (151) is formed inside the first limiting member (15) for winding the winding.

7. The stator insulation frame according to claim 4, characterized in that: A clamping groove (112) is formed on the first outer baffle plate (11); the clamping groove (112) is formed with a buffer position, which can fix the power cord and accommodate the deformation of the power cord.

8. The stator insulation frame according to claim 1, characterized in that: The lower frame (2) comprises a second outer baffle plate (21), a second inner baffle plate (23) and a second connecting portion (24); the second outer baffle plate (21) and the second inner baffle plate (23) are arranged on both sides of the second connecting portion (24) and are connected via the second connecting portion (24); and a second wire passing column (22) is provided between the second outer baffle plate (21) and the second inner baffle plate (23).

9. The stator insulation frame according to claim 8, characterized in that: The second wire-passing slot (211) is formed between the second outer baffle plate (21) and the second wire-passing post (22); and the second winding slot (221) is formed between the second inner baffle plate (23) and the second wire-passing post (22).

10. The stator insulation frame according to claim 8, characterized in that: A second limiting member (25) extending upward from the lower frame (2) is formed at the top of the second connection portion (24); the outside of the second limiting member (25) can be clamped in the limiting groove (311) so that the lower frame (2) is connected to the lower end of the stator core (31); and a fourth winding groove (251) is formed inside the second limiting member (25) for winding the winding.

11. A stator, characterized in that: A stator insulation frame having a stator core (31), a winding and the stator insulation frame according to any one of claims 1 to 10; when a plurality of the stator cores (31) form a straight bar shape, a plurality of the upper frames (1) and the lower frames (2) are respectively connected to the corresponding stator cores (31); the winding is wound in the first winding slot (121), the second winding slot (221), the third winding slot (151) and the fourth winding slot (251); the bridge wire of the winding passes through the first wire slot (111) and the second wire slot (211) and extends; When the plurality of stator cores (31) form a circle, the support frames of the adjacent lower frames (2) support the bridge wires of the windings.

12. The stator according to claim 11, characterized in that When the plurality of stator cores (31) form a straight strip, the length of the bridge line of the winding between the center lines of two adjacent stator insulation frames is L1; when the plurality of stator cores (31) form a circle, the length of the bridge line of the winding between the center lines of two adjacent stator insulation frames is L2; ​​by designing the length of the connecting arm (262) of the lower frame (2) or adjusting the distance between the connecting arm (262) of the lower frame (2) and the base frame (261), 0 <L1-L2<3mm。 13. A motor, characterized in that: A stator (3) having a stator insulation frame as described in any one of claims 1 to 10 or a stator (3) as described in any one of claims 11 to 12.

Citation Information

Patent Citations

  • Motor insulation skeleton and have its motor

    CN204696817U

  • Motor insulating framework and motor provided with same

    CN106300720A

  • Insulating framework structure, stator and motor

    CN110829672A