Stator structure and electric motor

Abstract

The application provides a stator structure and a motor; the stator structure comprises a stator framework, a terminal and an enameled wire, the terminal is arranged on the stator framework; the terminal comprises a wiring structure; the wiring structure is provided with a V-shaped clamping cavity, at least one side wall in the clamping cavity is provided with a plurality of protrusions to form a stripping structure; and the enameled wire is crimped in the clamping cavity to be in conduction with the terminal. According to the application, the paint film of the wiring can be pierced during the crimping of the wiring of the stator structure, the paint film is removed during the assembly, the problem of removing the paint film on the surface of the enameled wire when the enameled wire is crimped to the terminal is solved, and the assembly efficiency of the wiring of the stator structure is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electric motor, and particularly relates to a stator structure and electric motor. BACKGROUND

[0002] The existing brushless DC motor has the advantages of good mechanical characteristics, wide speed regulation range, strong overload capacity and high working efficiency, and can be widely applied to fan loads of household and commercial electric appliances. In the stator structure of the current brushless DC motor, the paint film on the surface of the enameled wire of the winding is an insulator. How to remove the paint film on the surface of the enameled wire is a key problem in the industry during the pressure connection of the terminal.

[0003] Since the stator structure in the prior art has the technical problem of removing the paint film on the surface of the enameled wire, the present application researches and designs a stator structure and electric motor. SUMMARY

[0004] Therefore, the present application provides a stator structure and electric motor, which can solve the technical problem of removing the paint film on the enameled wire in the stator structure in the prior art.

[0005] In order to solve the above problems, the present application provides a stator structure, wherein:

[0006] The stator structure comprises a stator framework, a terminal and an enameled wire, the terminal is arranged on the stator framework; the terminal comprises a wiring structure; the wiring structure is provided with a V-shaped clamping cavity, and a plurality of protrusions are arranged on at least one side wall in the clamping cavity to form a paint removal structure; and the enameled wire is pressure connected in the clamping cavity to be in conduction with the terminal.

[0007] In some embodiments, the plurality of protrusions are arranged on the at least one side wall in the clamping cavity in a grid shape.

[0008] In some embodiments, the enameled wire is a power supply wire or a winding wire.

[0009] In some embodiments, the wiring structure is a wiring sheet, and the wiring sheet is a V-shaped structure or a concave structure.

[0010] In some embodiments, the protrusion is a conical structure.

[0011] In some embodiments, the terminal is a wiring end terminal; the wiring structure is provided with a plug-in sheet; one end of the plug-in sheet is connected with the wiring structure, and the other end of the plug-in sheet extends away from the wiring structure to form an L-shaped or arc-shaped structure.

[0012] In some embodiments, the terminal is a common end terminal, and the common end terminal comprises a first wiring structure, a second wiring structure and a third wiring structure; the first wiring structure and the second wiring structure are connected through a first terminal connecting bridge, and the second wiring structure and the first wiring structure are connected through a second terminal connecting bridge.

[0013] In some embodiments, the stator framework is provided with a terminal seat, and the terminal seat is provided with a terminal mounting cavity; and the wiring structure is arranged in the terminal mounting cavity.

[0014] In some embodiments, the inner wall of the terminal mounting cavity is provided with a clamping portion; and the wiring structure is clamped and connected with the clamping portion.

[0015] In some embodiments, the terminal seat is provided with a fixing portion; the fixing portion is arranged on the outer side wall of the terminal seat; the stator structure further comprises a terminal sheath, and the side of the terminal sheath is provided with a connecting portion; the terminal sheath is clamped with the fixing portion through the connecting portion, so as to be arranged on the terminal seat; and the terminal sheath covers the terminal mounting cavity.

[0016] In some embodiments, the bottom side of the terminal sheath is provided with a pressing portion; the terminal sheath is arranged on the terminal seat, and the pressing portion is press-fitted on the terminal.

[0017] In some embodiments, the terminal is a wiring terminal, and the wiring terminal is provided with a plug-in piece; the terminal seat is a wiring terminal seat; the side of the wiring terminal seat is provided with a wire tail placing groove, and the wire tail placing groove is communicated with the terminal mounting cavity of the wiring terminal seat; the wiring terminal is arranged in the terminal mounting cavity of the wiring terminal seat, and the plug-in piece extends out of the wiring terminal seat along the wire tail placing groove.

[0018] In some embodiments, the stator framework is provided with a terminal seat, and the terminal seat is a common terminal seat; the common terminal seat comprises a first common terminal seat, a second common terminal seat and a third common terminal seat, and the first common terminal seat and the second common terminal seat are provided with a first connecting bridge guard plate therebetween, and the second common terminal seat and the third common terminal seat are provided with a second connecting bridge guard plate therebetween; a first wiring structure is arranged in the first common terminal seat, a second wiring structure is arranged in the second common terminal seat, a third wiring structure is arranged in the third common terminal seat, a first terminal connecting bridge is arranged in the first connecting bridge guard plate, and a second terminal connecting bridge is arranged in the second connecting bridge guard plate.

[0019] In some embodiments, the inner circle of the stator framework is provided with a plurality of wire winding grooves along the circumference thereof; the enameled wire is wound in the wire winding grooves to form a winding; the outer circle of the stator framework is provided with a framework outer guard plate along the circumference thereof, and the bridge wire of the winding is arranged on the inner side of the framework outer guard plate; and / or, the outer circle of the stator framework is provided with a plurality of framework wire passing columns at intervals along the circumference thereof, and the framework wire passing columns are arranged on the outer side of the wire winding groove; the bridge wire of the winding passes through the framework wire passing column and extends to another wire winding groove.

[0020] Correspondingly, the application further provides an electric motor comprising the foregoing stator structure.

[0021] In some embodiments, the electric motor is a brushless direct current motor.

[0022] The stator structure and the electric motor provided by the application have the following technical advantages:

[0023] (1) The stator structure provided by the application has a V-shaped clamping cavity designed on the terminal connecting structure of the stator structure, and a skin-removing structure designed on at least one side wall in the clamping cavity, so that the stator enameled wire can be clamped in the clamping cavity when being pressed down and connected in the clamping cavity, and the skin of the enameled wire is pierced to make the terminal conductive. The assembly structure is designed ingeniously, and the installation efficiency is improved.

[0024] (2) The stator structure provided by the application has a terminal seat designed on the stator framework, which facilitates the pressing of the terminal and plays a role in fixing and protecting the terminal, thereby solving the problem of the unfixable terminal.

[0025] (3) The stator structure provided by the application has a terminal designed with a plug-in piece, which can press the terminal to lead out the power supply line, or can weld the circuit board to lead out the power supply line from the circuit board, thereby solving the problems of low automation degree of the welding process and poor welding quality.

[0026] (4) The stator structure provided by the application has a stator framework designed with a connecting bridge protection plate, which provides a support plane for the terminal connecting bridge and protects the terminal connecting bridge from the impact of the injection molding material, thereby playing a role in protection and fixation.

[0027] (5) The stator structure provided by the application has a terminal seat designed with a terminal sheath, which can provide an injection molding plane to prevent the plastic sealing material from impacting the terminals inside the terminal seat and can reduce the axial movement of the terminals in the terminal seat.

[0028] (6) The stator structure provided by the application has a plug-in piece designed in a shape, so that the terminal can be installed with a heat shrink tube after pressing the enameled wire, the heat shrink tube can isolate air to prevent the terminal from being oxidized, and the problem of the oxidation of the terminal affecting the contact resistance is solved. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. The drawings in the following description are only exemplary, and for those skilled in the art, other embodiments can be derived from the provided drawings without creative labor.

[0030] Figure 1 is a whole schematic view of a stator structure of the application.

[0031] Figure 2 is a whole schematic view of a stator structure of the application (without terminal sheath).

[0032] Figure 3 is a schematic diagram of the wiring structure of the present application.

[0033] Figure 4 is a schematic diagram of the terminal structure of the present application.

[0034] Figure 5 is a schematic diagram of the terminal structure of the present application.

[0035] Figure 6 is a schematic diagram of the stator upper frame structure of the present application.

[0036] Figure 7 is a schematic diagram of the terminal seat structure of the present application.

[0037] Figure 8 is a schematic diagram of the terminal seat assembly of the present application.

[0038] Figure 9 is a schematic diagram of the terminal sheath structure of the present application. Figure 1

[0039] Figure 10 is a schematic diagram of the terminal sheath structure of the present application. Figure 2

[0040] Figure 11 is a schematic diagram of the stator winding sequence and wiring of the present application.

[0041] Figure 12 is a schematic diagram of the stator lower frame structure of the present application.

[0042] Figure 13 is a schematic diagram of the stator winding effect of the present application.

[0043] The reference signs are:

[0044] ​​1, stator lower frame; 11, frame outer baffle; 12, frame wire passing column; 13, winding slot; 2, stator core; 3, stator upper frame; 31, first terminal block; 32, second terminal block; 33, third terminal block; 34, first common terminal block; 35, second common terminal block; 36, third common terminal block; 37, first connecting bridge guard plate; 38, second connecting bridge guard plate; 311, terminal mounting cavity; 312, clamping part; 313, fixed part; 314, wire tail placing groove; 4, terminal sheath; 41, sheath clamping edge; 42, compression part; 43, sheath clamping groove; 5, winding; 51, first winding wire head; 52, second winding wire head; 53, third winding wire head; 54, first winding wire tail; 55, second winding wire tail; 56, third winding wire tail; 6, terminal; 61, wiring structure; 62, insertion tab; 63, clamping cavity; 64, protrusion; 7, heat shrink tube; 8, common terminal; 81, first wiring structure; 82, second wiring structure; 83, third wiring structure; 84, first terminal connecting bridge; 85, second terminal connecting bridge. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0047] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" other elements or features would then be oriented "below" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial relative terms used herein interpreted accordingly.

[0048] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not connote any meaning of importance, but are used only to distinguish one element from another, and are used subject to change only the context. Consequently, the use of such terms is not intended to limit the scope of the present application to the preferred embodiment disclosed herein.

[0049] With reference to the accompanying drawings Figures 1-4 As shown, according to the embodiment of the present application, a stator structure is provided, comprising a stator skeleton, a terminal and an enameled wire; wherein the terminal is arranged on the stator skeleton; the terminal comprises a wiring structure 61; specifically, a V-shaped clamping cavity 63 is arranged on the wiring structure 61, so that the enameled wire can be clamped by the clamping cavity 63; further, a plurality of protrusions 64 are arranged on at least one side wall in the clamping cavity 63 to form a stripping structure; specifically, the enameled wire is crimped in the clamping cavity 63 to realize conduction with the terminal and achieve electrical connection. Further, the enameled wire can be a winding wire of the stator structure (i.e. the wiring of the winding) or a power supply wire of the stator structure.

[0050] The present application provides a stripping structure formed by a plurality of protrusions arranged on at least one side wall in the V-shaped clamping cavity of the wiring structure of the terminal, so that the enameled wire can be pierced by the stripping structure while being crimped and clamped, realizing the removal of the enameled wire during assembly, solving the problem of removing the surface enameled wire when the enameled wire is crimped to the terminal, and improving the assembly efficiency of the wiring of the stator structure.

[0051] As Figures 1 to 3As shown in the drawings, in some embodiments: the plurality of protrusions 64 are arranged in a grid pattern on at least one side wall in the clamping cavity 63. Further, the plurality of protrusions 64 are arranged in a grid pattern on the opposite two side walls in the clamping cavity 63. By arranging the grid-shaped plurality of protrusions 64 on the opposite two side walls in the clamping cavity 63, the enameled wire of the winding can be pierced during the downward crimping process to make the enameled wire and the terminal conductive. Specifically, the protrusions 64 can be in the form of a spike structure or a tapered structure or a sawtooth structure to achieve efficient removal of the enamel.

[0052] As shown in the drawings, in some embodiments: the terminal is a terminal end terminal 6; in order to facilitate the external lead wire of the terminal end terminal 6, the terminal structure 61 is provided with a plug-in piece 62. Specifically, one end of the plug-in piece 62 is connected with the terminal structure 61, and the other end of the plug-in piece 62 extends away from the terminal structure 61 to form an L-shaped or arc-shaped structure, so that the plug-in piece 62 can crimp the power supply wire led out by the terminal, and can also weld the power supply wire led out from the circuit board, and the structure design is reasonable. Further, the plug-in piece 62 is welded with the terminal structure 61 or is an integral structure. Figures 1 to 3 As shown in the drawings, in some embodiments: the terminal is a terminal end terminal 6; in order to facilitate the external lead wire of the terminal end terminal 6, the terminal structure 61 is provided with a plug-in piece 62. Specifically, one end of the plug-in piece 62 is connected with the terminal structure 61, and the other end of the plug-in piece 62 extends away from the terminal structure 61 to form an L-shaped or arc-shaped structure, so that the plug-in piece 62 can crimp the power supply wire led out by the terminal, and can also weld the power supply wire led out from the circuit board, and the structure design is reasonable. Further, the plug-in piece 62 is welded with the terminal structure 61 or is an integral structure.

[0053] Figures 1 to 3 As shown in the drawings, in some embodiments: the terminal is a terminal end terminal 6; in order to facilitate the external lead wire of the terminal end terminal 6, the terminal structure 61 is provided with a plug-in piece 62. Specifically, one end of the plug-in piece 62 is connected with the terminal structure 61, and the other end of the plug-in piece 62 extends away from the terminal structure 61 to form an L-shaped or arc-shaped structure, so that the plug-in piece 62 can crimp the power supply wire led out by the terminal, and can also weld the power supply wire led out from the circuit board, and the structure design is reasonable. Further, the plug-in piece 62 is welded with the terminal structure 61 or is an integral structure.

[0054] As shown in the drawings, in some embodiments: the terminal is a terminal end terminal 6; in order to facilitate the external lead wire of the terminal end terminal 6, the terminal structure 61 is provided with a plug-in piece 62. Specifically, one end of the plug-in piece 62 is connected with the terminal structure 61, and the other end of the plug-in piece 62 extends away from the terminal structure 61 to form an L-shaped or arc-shaped structure, so that the plug-in piece 62 can crimp the power supply wire led out by the terminal, and can also weld the power supply wire led out from the circuit board, and the structure design is reasonable. Further, the plug-in piece 62 is welded with the terminal structure 61 or is an integral structure. Figures 1 to 3 As shown in the drawings, in some embodiments: the terminal is a terminal end terminal 6; in order to facilitate the external lead wire of the terminal end terminal 6, the terminal structure 61 is provided with a plug-in piece 62. Specifically, one end of the plug-in piece 62 is connected with the terminal structure 61, and the other end of the plug-in piece 62 extends away from the terminal structure 61 to form an L-shaped or arc-shaped structure, so that the plug-in piece 62 can crimp the power supply wire led out by the terminal, and can also weld the power supply wire led out from the circuit board, and the structure design is reasonable. Further, the plug-in piece 62 is welded with the terminal structure 61 or is an integral structure.

[0055] Figure 3 In some embodiments: the terminal structure of the terminal end terminal 6 refers to the terminal structure 61 described above, that is, as shown in the drawings; the plug-in piece 62 is designed in an L-shaped structure or an arc-shaped structure, so as to facilitate the wiring in a small space on the framework. ​​

[0056] In some embodiments, a clamping portion 312 is provided on the inner wall of the terminal mounting cavity 311. This design allows the wiring structure 61 to be clamped together with the clamping portion 312, thereby clamping it within the terminal mounting cavity 311. Preferably, see reference... Figure 7 As shown, the clamping part 312 is preferably a fixed boss, and the fixed boss is arranged vertically in the terminal mounting cavity 311. This design allows the wiring structure 61 to form an interference fit with the fixed boss when it is pressed into the terminal mounting cavity 311, thereby clamping it in the terminal mounting cavity 311. Specifically, fixed bosses are provided on opposite side walls of the terminal mounting cavity 311, with one fixed boss on one side wall and two fixed bosses on the other side wall. The fixed boss on one side wall is staggered from the two fixed bosses on the other side wall, which is beneficial for clamping the wiring structure 61 and achieving positioning.

[0057] like Figure 1 , Figures 7 to 10 As shown, in some embodiments: the stator structure further includes a terminal sleeve 4; a fixing part 313 is provided on the terminal base. The fixing part 313 is disposed on the outer wall of the terminal base; a connecting part is provided on the side of the terminal sleeve 4, and the terminal sleeve 4 is snapped together with the fixing part 313 through the connecting part, thereby being disposed on the terminal base; the terminal sleeve 4 covers the terminal mounting cavity 311, thereby protecting the terminals inside the terminal mounting cavity 311. Further, a pressing part 42 is provided on the bottom side of the terminal sleeve 4; specifically, the terminal sleeve 4 is disposed on the terminal base, and the connecting part is snapped together with the fixing part 313, thereby pressing the pressing part 42 onto the terminal to achieve pressing and positioning. In this embodiment, the terminal sleeve 4 is used in conjunction with the terminal base to cover the terminals inside the terminal base, thereby playing a protective role. Preferably, as Figure 7 As shown, the fixing part 313 is designed as a protective sleeve mounting buckle, such as... Figure 10 As shown, the connecting part is designed as a sheath groove 43; specifically, sheath mounting buckles are provided on the outer walls of opposite sides of the terminal block; correspondingly, sheath retaining edges 41 are provided on both sides of the terminal sheath 4, and sheath grooves 43 are provided on the inner walls of the retaining edges 41, while sheath protrusions are also provided on the bottom side of the terminal sheath 4; specifically, the terminal sheath 4 can be fastened to the terminal block and engaged with the sheath mounting buckles by the sheath grooves 43 on both sides, so that the sheath protrusions squeeze the remaining space of the terminal in the terminal mounting cavity 311, achieving a sealing effect; preferably, the sheath mounting buckles are designed as triangular prism structures, so that the sheath grooves 43 on the sheath retaining edges 41 are easy to install and not easy to loosen.

[0058] like Figure 1 , Figures 9 to 10As shown, in the embodiment, the stator structure further comprises a terminal sheath 4; specifically, the terminal sheath 4 is used to be mounted on the terminal seat to compress the wiring structure 61 in the terminal mounting cavity 311. Further, the terminal comprises a wiring end terminal 6 and a common end terminal 8, and the terminal seat comprises a wiring end terminal seat and a common end terminal seat accordingly. Specifically, as shown in Figure 1 , Figure 7 , Figure 8 As shown, in the stator assembly process, the wire head of the winding 5 enameled wire is crimped in the wiring structure of the common end terminal 8, and is sleeved into the heat shrink tube 7 for heat shrinkage, and is then arranged in the terminal mounting cavity 311 of the common end terminal seat as a whole, and finally the terminal sheath 4 is mounted to complete the common end manufacturing of the stator; further, in the stator assembly process, the wire tail of the winding 5 enameled wire is crimped in the wiring structure of the wiring end terminal 6, and is sleeved into the heat shrink tube 7 for heat shrinkage, and is then arranged in the terminal mounting cavity 311 of the wiring end terminal seat as a whole, and finally the terminal sheath 4 is mounted to complete the stator manufacturing. In the assembly structure of the wiring end terminal 6 and the common end terminal 8, the terminal sheath 4 is arranged on the wiring end terminal seat and the common end terminal seat respectively, and covers the wiring end terminal 6 and the common end terminal 8 respectively, thereby playing a protection role. As shown, Figure 4 The wiring structure 61 is protected by the heat shrink tube 7, which solves the problem of terminal oxidation affecting the contact resistance, and through the design of the L-shaped insertion piece 62 in the wiring structure 61, the heat shrink tube can be installed after the terminal is crimped with the winding wire, which isolates air and prevents terminal oxidation.

[0059] As shown, Figures 2-4 In some embodiments: the terminal is a wiring end terminal 6, and the wiring end terminal 6 is provided with an insertion piece 62; the terminal seat is a wiring end terminal seat; the side surface of the wiring end terminal seat is provided with a wire tail placing groove 314, and the wire tail placing groove 314 is in communication with the terminal mounting cavity 311 of the wiring end terminal seat; the wiring end terminal 6 is arranged in the terminal mounting cavity 311 of the wiring end terminal seat, and the insertion piece 62 of the wiring end terminal 6 extends out of the wiring end terminal seat along the wire tail placing groove 314. In the embodiment, as shown in Figure 7 For example, the first wiring end terminal seat 31, the side surface of the wiring end terminal seat is provided with a wire tail placing groove 314, and the wire tail placing groove 314 is in communication with the terminal mounting cavity 311 of the wiring end terminal seat.

[0060] As shown, Figure 2 , Figure 5As shown, in some embodiments: the stator frame is provided with a terminal seat, the terminal is a common end terminal 8, the common end terminal 8 includes a first wiring structure 81, a second wiring structure 82 and a third wiring structure 83; the first wiring structure 81 and the second wiring structure 82 are connected through a first terminal connecting bridge 84, and the second wiring structure 82 and the first wiring structure 83 are connected through a second terminal connecting bridge 85. The terminal seat is a common end terminal seat; the common end terminal seat includes a first common end terminal seat 34, a second common end terminal seat 35 and a third common end terminal seat 36, a first connecting bridge guard plate 37 is arranged between the first common end terminal seat 34 and the second common end terminal seat 35, and a second connecting bridge guard plate 38 is arranged between the second common end terminal seat 35 and the third common end terminal seat 36; the first wiring structure 81 is arranged in the first common end terminal seat 34, the second wiring structure 82 is arranged in the second common end terminal seat 35, the third wiring structure 83 is arranged in the third common end terminal seat 36, the first terminal connecting bridge 84 is arranged in the first connecting bridge guard plate 37, and the second terminal connecting bridge 85 is arranged in the second connecting bridge guard plate 38. In this embodiment, one side of the first common end terminal seat 34 and the third common end terminal seat 36 is provided with a wire tail placing groove 314, and the two sides of the second common end terminal seat 35 are respectively provided with a wire tail placing groove 314, and the wire tail placing groove 314 is in communication with the terminal mounting cavity 311 of the common end terminal seat. The wire tail placing grooves 314 opened in the common end terminal seat and the wiring end terminal seat are not the same, so that the foolproofness can be realized. For example Figure 6 As shown, on the stator frame 3, the specific structure of the common end terminal seat includes a first common end terminal seat 34, a second common end terminal seat 35 and a third common end terminal seat 36, and a first connecting bridge guard plate 37 is arranged between the first common end terminal seat 34 and the second common end terminal seat 35, and a second connecting bridge guard plate 38 is arranged between the second common end terminal seat 35 and the third common end terminal seat 36. In the above scheme, by designing the above common end terminal seat structure on the stator frame 3, the first common end body 81 can be arranged in the first common end terminal seat 34, the second common end body 82 can be arranged in the second common end terminal seat 35, the first terminal connecting bridge 84 can be arranged in the first connecting bridge guard plate 37 through the wire tail placing groove 314; the third common end body 83 is arranged in the third common end terminal seat 36, and the second terminal connecting bridge 85 is arranged in the second connecting bridge guard plate 38 through the wire tail placing groove 314, finally the first common end body 81, the second common end body 82 and the third common end body 83 are connected to each other and conductive, and the protection of the entire common end terminal 8 is realized, and the installation is also more convenient, and the foolproofness can be realized.

[0061] For example Figure 1 , Figure 5 , Figure 6As shown, in some embodiments: the terminal block 6 includes a first terminal block, a second terminal block, and a third terminal block; the winding 5 includes a U-phase winding, a V-phase winding, and a W-phase winding; the end of the enameled wire of the U-phase winding is crimped into the first wiring structure 81 to conduct the common terminal of the U-phase; the end of the enameled wire of the V-phase winding is crimped into the second wiring structure 82 to conduct the common terminal of the V-phase; the end of the enameled wire of the W-phase winding is crimped into the third wiring structure 83 to conduct the common terminal of the W-phase; the end of the enameled wire of the U-phase winding is crimped into the body of the first terminal block to conduct the terminal of the U-phase; the end of the enameled wire of the V-phase winding is crimped into the body of the second terminal block to conduct the terminal of the V-phase; the end of the enameled wire of the W-phase winding is crimped into the body of the third terminal block to conduct the terminal of the W-phase. In this embodiment, the terminal block 6 includes a first terminal block, a second terminal block, and a third terminal block. Correspondingly, on the stator upper frame 3, the specific structure of the terminal block holder includes a first terminal block holder 31, a second terminal block holder 32, and a third terminal block holder 33. The three terminal block holders respectively install three terminal blocks, and the three terminal blocks are respectively connected to the ends of the U-phase winding, V-phase winding, and W-phase winding in the crimp winding 5. Further, the winding 5 is a concentrated winding.

[0062] like Figure 1 and Figure 12 As shown, in some embodiments: the inner ring of the stator frame is provided with a plurality of winding grooves along its circumference; enameled wire is wound in the winding grooves 13 to form winding 5; the outer ring of the stator frame is provided with an outer frame baffle 11 along its circumference, and the bridging wire of winding 5 is disposed on the inner side of the outer frame baffle 11. Figure 12 As shown, an outer baffle 11 is provided on the outer ring of the stator lower frame 1 along its circumference. This allows the bridging wire of the winding 5 to be located inside the outer baffle 11, that is, the outer baffle 11 can prevent the bridging wire of the winding from running to the outside of the frame during winding.

[0063] like Figure 1 and Figure 12 As shown, in some embodiments: the inner ring of the stator frame is provided with multiple winding slots along its circumference; enameled wire is wound in the winding slots 13 to form winding 5; the outer ring of the stator frame is provided with multiple frame guide posts 12 spaced apart along its circumference, and the frame guide posts 12 are located outside the winding slots 13; the bridging wire of the winding 5 passes around the frame guide posts 12 and extends to another winding slot 13. The outer ring of the stator lower frame 1 is provided with frame guide posts 12 spaced apart along its circumference, and the bridging wire of the winding 5 can pass around its adjacent winding 5 through the frame guide posts 12, that is, the frame guide posts 11 are used when the bridging wire crosses from one winding slot 13 to another winding slot according to the stator's preset route during winding, thereby achieving the avoidance function.

[0064] like Figures 1 to 3 As shown, in some embodiments: the stator structure further includes a stator core 2, and the stator frame includes a lower stator frame 1 and an upper stator frame 3; the lower stator frame 1 is disposed on the lower end face of the stator core 2, and the upper stator frame 3 is disposed on the upper end face of the stator core 2; the terminal block is disposed on the upper end face of the upper stator frame 3, specifically in the circumferential direction of the upper end face of the upper stator frame 3, which facilitates the pressing of terminals.

[0065] Accordingly, in conjunction with the above solutions, the present invention also provides an electric motor, the electric motor including the stator structure described above.

[0066] In some implementations, the motor is a brushless DC motor.

[0067] The stator structure described in this application is applicable to brushless DC motors. The stator structure of a brushless DC motor consists of a stator core as the magnetic conductor and windings as the excitation conductor. For example... Figure 1 and Figure 2 As shown, the stator core 2 is fitted with a frame, on which concentrated windings are wound. The U, V, and W phase windings each have three wire ends and three wire ends. The wire ends of the U, V, and W phases are crimped to the common terminal on the frame, connecting the common terminal of U, V, and W phases. The wire ends of the U, V, and W phases are placed in the terminal blocks on the frame, crimped to the terminals. The terminals can be plugged into corresponding terminals of the same type or soldered to a terminal block to bring out the three power lines U, V, and W. Figure 11 and Figure 13 As shown in the diagram, the stator winding sequence and wiring principle are as follows: Winding group 5 is wound with the first winding lead 51 drawn from point 1U in the stator upper frame 3, the second winding lead 52 drawn from point 2V, the third winding lead 53 drawn from point 3W, the first winding tail 54 drawn from point 10U, the second winding tail 55 drawn from point 11V, and the third winding tail 56 drawn from point 12W. The winding stator effect is as follows. Figure 13 As shown, the first winding wire end 51, the second winding wire end 52, and the third winding wire end 53 are respectively crimped to the common terminal 8 to connect the U, V, and W phases. After the common terminal 8 with the winding wire ends is connected, it is heat-shrinked by the heat-shrink tubing 7 and placed in the common terminal holder (i.e., the first common terminal holder 34, the second common terminal holder 35, and the third common terminal holder 36) on the stator upper frame 3. The first winding wire end 54, the second winding wire end 55, and the third winding wire end 56 are respectively crimped to the terminal 6 to lead out the U, V, and W phase wires. The effect after crimping the terminals is as follows. Figure 2 As shown.

[0068] The present invention also proposes an electric motor, which includes the stator structure described above. Further, the electric motor proposed in this application is a brushless DC motor.

[0069] The stator structure and motor have the following technical advantages.

[0070] (1) The stator structure has a V-shaped clamping cavity designed on the terminal wiring structure of the stator structure, and a skin-removing structure designed on at least one side wall in the clamping cavity, so that the stator enameled wire can be clamped in the clamping cavity when being pressed down and connected in the clamping cavity, and the enameled wire skin is pierced to connect the terminal. The assembly structure is designed ingeniously, and the installation efficiency is improved.

[0071] (2) The stator structure has a terminal seat designed on the stator framework, which facilitates the pressing of the terminal and plays a role in fixing and protecting the terminal, and solves the problem that the terminal cannot be fixed.

[0072] (3) The stator structure has a terminal designed with a plug-in piece, which can press the terminal to lead out the power supply line, or can weld the circuit board to lead out the power supply line from the circuit board, solving the problems of low automation degree of welding process and virtual welding quality hazards.

[0073] (4) The stator structure has a stator framework provided with a connecting bridge guard plate to provide a support plane for the terminal connecting bridge, protect the terminal connecting bridge from the impact of injection molding material, and play a role in protection and fixation.

[0074] (5) The stator structure has a terminal sheath designed on the terminal seat to provide an injection molding plane, prevent the plastic sealing material from impacting the terminal inside the terminal seat, and reduce the axial movement of the terminal in the terminal seat.

[0075] (6) The stator structure has a plug-in piece designed in a shape, so that the terminal can be installed with a heat shrink tube after pressing the enameled wire, and the heat shrink tube can isolate air to prevent the terminal from being oxidized, solving the problem of the influence of terminal oxidation on contact resistance.

[0076] Those skilled in the art will readily understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0077] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above description is only the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications shall be regarded as the protection scope of the present application.

Claims

1. A stator structure, characterized by: The stator structure comprises a stator framework, a terminal and an enameled wire, the terminal is arranged on the stator framework; the terminal comprises a wiring structure (61); the wiring structure (61) is provided with a V-shaped clamping cavity (63), at least one side wall in the clamping cavity (63) is provided with a plurality of protrusions (64) to form a peeling structure; the enameled wire is crimped in the clamping cavity (63) to conduct with the terminal; The stator framework is provided with a terminal seat, the terminal seat is provided with a terminal mounting cavity (311); the wiring structure (61) is arranged in the terminal mounting cavity (311); The terminal is a wiring terminal (6), the wiring terminal (6) is provided with a plug-in piece (62); the terminal seat is a wiring terminal seat; the side surface of the wiring terminal seat is provided with a wire tail placing groove (314), the wire tail placing groove (314) is communicated with the terminal mounting cavity (311) of the wiring terminal seat; the wiring terminal (6) is arranged in the terminal mounting cavity (311) of the wiring terminal seat, and the plug-in piece (62) extends out of the wiring terminal seat along the wire tail placing groove (314).

2. The stator structure of claim 1, wherein: The plurality of protrusions (64) are arranged on at least one side wall in the clamping cavity (63) in a grid shape.

3. The stator structure of claim 1, wherein: The wiring structure (61) is a wiring piece, and the wiring piece is a V-shaped structure or a concave structure.

4. The stator structure of claim 1, wherein: The terminal is a wiring terminal (6); the wiring structure (61) is provided with a plug-in piece (62); one end of the plug-in piece (62) is connected with the wiring structure (61), and the other end of the plug-in piece (62) extends away from the wiring structure (61) to form an L-shaped or arc-shaped structure.

5. The stator structure of claim 1, wherein: The terminal is a common terminal (8), the common terminal (8) comprises a first wiring structure (81), a second wiring structure (82) and a third wiring structure (83); the first wiring structure (81) and the second wiring structure (82) are connected through a first terminal connecting bridge (84), and the second wiring structure (82) and the first wiring structure (83) are connected through a second terminal connecting bridge (85).

6. The stator structure of claim 1, wherein: The inner wall of the terminal mounting cavity (311) is provided with a clamping portion (312); the wiring structure (61) and the clamping portion (312) are clamped and connected together.

7. The stator structure of claim 1, wherein: The terminal seat is provided with a fixing portion (313); the fixing portion (313) is arranged on the outer side wall of the terminal seat; the stator structure further comprises a terminal sheath (4), the side edge of the terminal sheath (4) is provided with a connecting portion; the terminal sheath (4) is clamped together with the fixing portion (313) through the connecting portion, so as to be arranged on the terminal seat; the terminal sheath (4) covers the terminal mounting cavity (311).

8. The stator structure of claim 7, wherein: The bottom side of the terminal sheath (4) is provided with a pressing portion (42); the terminal sheath (4) is arranged on the terminal seat, and the pressing portion (42) is crimped on the terminal.

9. The stator structure of claim 5, wherein: The stator frame is provided with a terminal seat, and the terminal seat is a common terminal seat; the common terminal seat comprises a first common terminal seat (34), a second common terminal seat (35) and a third common terminal seat (36), a first connecting bridge guard plate (37) is arranged between the first common terminal seat (34) and the second common terminal seat (35), and a second connecting bridge guard plate (38) is arranged between the second common terminal seat (35) and the third common terminal seat (36); the first wiring structure (81) is arranged in the first common terminal seat (34), the second wiring structure (82) is arranged in the second common terminal seat (35), the third wiring structure (83) is arranged in the third common terminal seat (36), the first terminal connecting bridge (84) is arranged in the first connecting bridge guard plate (37), and the second terminal connecting bridge (85) is arranged in the second connecting bridge guard plate (38).

10. The stator structure of claim 1, wherein: A plurality of winding grooves (13) are arranged on the inner ring of the stator frame in the circumferential direction; the enameled wire is wound in the winding grooves (13) to form a winding (5); A stator frame outer baffle (11) is arranged on the outer ring of the stator frame in the circumferential direction, and the bridge wire of the winding (5) is arranged on the inner side of the stator frame outer baffle (11); and / or, A plurality of stator wire passing columns (12) are arranged on the outer ring of the stator frame in the circumferential direction at intervals, the stator wire passing columns (12) are arranged on the outer side of the winding grooves (13), and the bridge wire of the winding (5) passes through the stator wire passing columns (12) and extends to another winding groove (13).

11. An electric motor characterized by: The motor comprises the stator structure according to any one of claims 1 to 10.

12. The electric motor of claim 11, wherein: The motor is a brushless direct-current motor.

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