Stator structure and motor

Abstract

The invention provides a stator structure and a motor. The stator structure comprises a stator framework, a terminal and an enameled wire, and 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 at least one side wall in the clamping cavity is provided with a peeling structure formed by a plurality of protrusions. And the enameled wire is pressed in the clamping cavity so as to be conducted with the terminal. According to the invention, the enamelled leather of the wiring can be punctured in the crimping wiring process of the stator structure, so that the enamelled leather is removed while assembly is realized, the problem of removing the surface enamelled leather when the enamelled wire crimps the terminal is solved, and the assembly efficiency of the stator structure wiring is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric motors, and in particular relates to a stator structure and an electric motor. Background Art

[0002] Existing brushless DC motors have the advantages of good mechanical properties, wide speed regulation range, strong overload capacity and high working efficiency, and can be widely used in fan loads of household and commercial appliances. In the stator structure of brushless DC motors, the paint on the surface of the enameled wire of its winding is an insulator. When crimping the terminal, how to remove the paint on the surface of the enameled wire is a key problem in the industry.

[0003] Since the stator structure in the prior art has technical problems such as the paint coating on the surface of the enameled wire, the present invention studies and designs a stator structure and a motor. Summary of the invention

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

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

[0006] The stator structure comprises: a stator frame, a terminal and an enameled wire, wherein the terminal is arranged on the stator frame; the terminal comprises a wiring structure; a V-shaped clamping cavity is arranged on the wiring structure, and a peeling structure formed by a plurality of protrusions is arranged on at least one side wall of the clamping cavity; the enameled wire is crimped in the clamping cavity to be connected with the terminal.

[0007] In some embodiments, a plurality of protrusions are distributed in a grid pattern on at least one side wall of the clip cavity.

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

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

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

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

[0012] In some embodiments, the terminal is a common terminal, which includes a first wiring structure, a second wiring structure, and a third wiring structure; the first wiring structure and the second wiring structure are connected by a first terminal connection bridge, and the second wiring structure and the first wiring structure are connected by a second terminal connection bridge.

[0013] In some embodiments, a terminal seat is provided on the stator frame, and a terminal installation cavity is provided in the terminal seat; and the wiring structure is arranged in the terminal installation cavity.

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

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

[0016] In some embodiments, a clamping portion is provided on the bottom side of the terminal sleeve; the terminal sleeve is disposed on the terminal seat, and the clamping portion is crimped onto the terminal.

[0017] In some embodiments, the terminal is a terminal terminal having a plug-in piece on it; the terminal seat is a terminal seat; a wire tail placement groove is provided on the side of the terminal seat, and the wire tail placement groove is connected to the terminal installation cavity of the terminal seat; the terminal terminal is arranged in the terminal installation cavity of the terminal seat, and the plug-in piece extends out of the terminal seat along the wire tail placement groove.

[0018] In some embodiments, a terminal seat is provided on the stator frame, and the terminal seat is a common-end terminal seat; the common-end terminal seat includes a first common-end terminal seat, a second common-end terminal seat and a third common-end terminal seat, a first connecting bridge guard plate is provided between the first common-end terminal seat and the second common-end terminal seat, and a second connecting bridge guard plate is provided between the second common-end terminal seat and the third common-end terminal seat; the first wiring structure is arranged in the first common-end terminal seat, the second wiring structure is arranged in the second common-end terminal seat, and the third wiring structure is arranged in the third common-end terminal seat, the first terminal connecting bridge is arranged in the first connecting bridge guard plate, and the second terminal connecting bridge is arranged in the second connecting bridge guard plate.

[0019] In some embodiments, a plurality of winding grooves are provided on the inner ring of the stator frame along its circumference; the enameled wire is wound in the winding grooves to form a winding; a skeleton outer baffle is provided on the outer ring of the stator frame along its circumference, and the bridge wire of the winding is arranged on the inner side of the skeleton outer baffle; and / or a plurality of skeleton wire posts are provided on the outer ring of the stator frame along its circumference at intervals, and the skeleton wire posts are arranged on the outer side of the winding grooves; the bridge wire of the winding bypasses the skeleton wire posts and extends to another winding groove.

[0020] Correspondingly, the present invention also provides an electric motor, which comprises the aforementioned stator structure.

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

[0022] The stator structure and motor proposed in this application have the following technical advantages:

[0023] (1) The stator structure proposed in the present application is designed with a V-shaped clamping cavity on the wiring structure of the stator structure terminal, and a peeling structure is designed on at least one side wall of the clamping cavity, so that the stator enameled wire can be clamped in the clamping cavity when it is pressed down into the clamping cavity, and the paint coating of the enameled wire is pierced to connect the terminal; the assembly structure is cleverly designed to improve installation efficiency.

[0024] (2) The stator structure proposed in the present application solves the problem that the terminals cannot be fixed by designing a terminal seat on the stator frame, which facilitates crimping of the terminals while fixing and protecting the terminals.

[0025] (3) The stator structure proposed in the present application has a terminal design with a plug-in piece, which can be crimped onto the terminal to lead out the power line, or can be welded to the circuit board to lead out the power line, thereby solving the problems of low automation level of the welding process and quality risks such as cold soldering.

[0026] (4) The stator structure proposed in the present application is designed such that the stator frame is provided with a connection bridge guard plate to provide a support plane for the terminal connection bridge, protect the terminal connection bridge from the impact of the injection molding material, and play a protective and fixing role.

[0027] (5) The stator structure proposed in the present application is designed with a terminal sleeve on the terminal seat, which can provide an injection molding plane to prevent the plastic sealing material from impacting the terminal inside the terminal seat, thereby reducing the axial movement of the terminal in the terminal seat.

[0028] (6) The stator structure proposed in the present application is designed in such a way that the heat shrink tube can be installed after the terminal is crimped with the enameled wire by designing the shape of the plug-in piece. The heat shrink tube isolates the air and prevents the terminal from oxidizing, thus solving the problem that the terminal oxidation affects the contact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0030] Figure 1 It is an overall schematic diagram of a stator structure of the present application.

[0031] Figure 2 This is an overall schematic diagram of a stator structure of the present application (without terminal sheath).

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

[0033] Figure 4 It is a schematic diagram of the terminal structure of the terminal block of this application.

[0034] Figure 5 It is a schematic diagram of the common terminal structure of this application.

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

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

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

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

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

[0040] Fig.11 It is the stator winding sequence and wiring schematic diagram of this application.

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

[0042] Fig.13 This is a stator winding effect diagram of the present application.

[0043] The accompanying drawings are marked as follows:

[0044] 1. stator lower frame; 11. frame outer baffle; 12. frame wire 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 installation cavity; 312. clamping part; 313. fixing part; 314. wire tail placement slot; 4. terminal cover; 41 , sheath clamping edge; 42, pressing part; 43, sheath clamping groove; 5, winding; 51, first winding wire end; 52, second winding wire end; 53, third winding wire end; 54, first winding wire tail; 55, second winding wire tail; 56, third winding wire tail; 6, wiring terminal; 61, wiring structure; 62, plug-in piece; 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 following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0049] See also Figure 1-4 As shown, according to an embodiment of the present invention, a stator structure is provided, the stator structure comprising: a stator frame, a terminal and an enameled wire; wherein the terminal is arranged on the stator frame; the terminal comprises a wiring structure 61; specifically, a V-shaped clamping cavity 63 is provided on the wiring structure 61, so that the enameled wire can be clamped by the clamping cavity 63; further, a peeling structure formed by a plurality of protrusions 64 is provided on at least one side wall of the clamping cavity 63; specifically, the enameled wire is crimped in the clamping cavity 63 to be connected with the terminal to achieve electrical connection. Further, the enameled wire can be a winding wire (i.e., a winding connection) of the stator structure, or a power line of the stator structure.

[0050] The present invention provides a peeling structure formed by multiple protrusions on at least one side wall of the V-shaped clamping cavity of the terminal wiring structure, so that the paint of the enameled wire can be pierced by the peeling structure while the enameled wire is crimped and clamped, so that the paint can be removed while assembling, thereby solving the problem of removing the surface paint when the enameled wire is crimped to the terminal and improving the assembly efficiency of the stator structure wiring.

[0051] like Figures 1 to 3As shown, in some embodiments: a plurality of protrusions 64 are arranged in a grid-like distribution on at least one side wall of the clamping cavity 63. Further, a plurality of protrusions 64 are arranged in a grid-like distribution on two opposite side walls of the clamping cavity 63. By providing a plurality of protrusions 64 in a grid-like distribution on two opposite side walls of the clamping cavity 63, the paint can be pierced during the downward crimping process of the enameled wire of the winding, and the enameled wire and the terminal can be connected. Specifically, the protrusion 64 structure can be a thorn-like structure, a cone-like structure, or a sawtooth structure to achieve efficient removal of the paint.

[0052] like Figures 1 to 3 As shown, in some embodiments: the wiring structure 61 is a wiring piece, and the wiring piece is a V-shaped structure or a concave structure. This design allows the V-shaped or concave wiring piece to be elastically clamped in the terminal mounting cavity 311 of the terminal seat. Preferably, the wiring structure 61 is formed by bending a metal sheet to form a V-shaped clamping cavity 63, which is convenient for processing and forming, and is conducive to clamping. Further, the wiring structure 61 is preferably a V-shaped structure formed by bending a metal sheet in one piece, and the metal sheet is preferably a copper sheet or a steel sheet, which achieves conductivity and has a certain elastic clamping effect. Furthermore, the protrusion 64 is designed as a cone structure, which is conducive to piercing the paint skin of the enameled wire and achieving electrical connection.

[0053] like Figures 1 to 3 As shown, in some embodiments: the terminal is a wiring terminal 6; in order to facilitate the external connection of the wiring terminal 6 with a wire, a plug-in piece 62 is provided on the wiring structure 61. Specifically, one end of the plug-in piece 62 is connected to the wiring structure 61, and the other end of the plug-in piece 62 extends in a direction away from the wiring structure 61 to form an L-shaped or arc-shaped structure, so that the plug-in piece 62 can be crimped to the power line led out of the terminal, and can also be welded to the circuit board to lead out the power line from the circuit board, and the structural design is relatively reasonable. Further, the plug-in piece 62 and the wiring structure 61 are welded or integrated.

[0054] like Figures 1 to 3 As shown, in some embodiments: a terminal seat is provided on the stator frame; a terminal installation cavity 311 is provided in the terminal seat; specifically, a wiring structure 61 is provided in the terminal installation cavity 311; the terminal seat is protrudingly provided on the upper end surface of the stator frame, which is convenient for installing the terminal, and the enameled wire can be directly crimped from top to bottom along the terminal installation cavity 311. The stator structure provided by the present application scheme is convenient for installing the terminal by providing a terminal seat on the frame structure, which plays a role in fixing and protecting the terminal, and is conducive to peeling the crimped enameled wire.

[0055] In some embodiments: the wiring structure of the terminal 6 refers to the wiring structure 61 described above, that is, Figure 3 As shown; the plug piece 62 is designed as an L-shaped structure or an arc-shaped structure, which facilitates wiring in a smaller space on the frame.

[0056] In some embodiments: a clamping portion 312 is provided on the inner wall of the terminal installation cavity 311, and the wiring structure 61 is clamped and connected with the clamping portion 312, so as to be clamped in the terminal installation cavity 311. Preferably, reference Figure 7 As shown, the clamping portion 312 is preferably a fixed boss, and the fixed boss is arranged in the terminal mounting cavity 311 along the vertical direction. Such a design allows the wiring structure 61 to form an interference fit with the fixed boss when the wiring structure 61 is pressed into the terminal mounting cavity 311, thereby being clamped in the terminal mounting cavity 311; specifically, fixed bosses are respectively provided on the two opposite side walls in the terminal mounting cavity 311, one side wall is provided with a fixed boss, and the other side wall is provided with two fixed bosses, and one fixed boss on one side wall and the two fixed bosses on the other side are staggered with each other, which is conducive to clamping the wiring structure 61 and achieving positioning.

[0057] like Figure 1 , Figures 7 to 10 As shown, in some embodiments: the stator structure also includes a terminal sleeve 4; a fixing portion 313 is provided on the terminal seat. The fixing portion 313 is arranged on the outer wall of the terminal seat; a connecting portion is provided on the side of the terminal sleeve 4, and the terminal sleeve 4 is clamped together with the fixing portion 313 through the connecting portion, so that it is arranged on the terminal seat; the terminal sleeve 4 covers the terminal installation cavity 311, so as to protect the terminal in the terminal installation cavity 311. Further, a clamping portion 42 is provided on the bottom side of the terminal sleeve 4; specifically, the terminal sleeve 4 is arranged on the terminal seat, and the connecting portion is clamped together with the fixing portion 313, so that the clamping portion 42 is crimped on the terminal to achieve clamping positioning. In this embodiment, the terminal sleeve 4 is used in conjunction with the terminal seat to cover the terminal in the terminal seat for protection. Preferably, as Figure 7 As shown, the fixing portion 313 is designed as a sheath mounting buckle. Fig.10 As shown, the connecting portion is designed as a sheath slot 43; specifically, sheath mounting buckles are respectively provided on the outer walls on opposite sides of the terminal seat; accordingly, sheath clamping edges 41 are respectively provided on both sides of the terminal sheath 4, and a sheath slot 43 is provided on the inner wall of the sheath clamping edge 41, and a sheath boss is also provided on the bottom side of the terminal sheath 4; specifically, the terminal sheath 4 can be buckled on the terminal seat, and be clamped on the sheath mounting buckle through the sheath slots 43 on both sides thereof, so that the sheath boss squeezes the remaining space of the terminal in the terminal mounting cavity 311, thereby achieving a sealing effect; preferably, the sheath mounting buckle is designed as a triangular prism structure, so that the sheath slot 43 on the sheath clamping edge 41 is easy to install and not easy to loosen.

[0058] like Figure 1 , Figures 9 and 10As shown, in this embodiment, the stator structure further includes a terminal sheath 4; specifically, the terminal sheath 4 is used to be installed on the terminal seat to compress the wiring structure 61 in the terminal installation cavity 311. Further, the terminal includes a wiring terminal 6 and a common terminal 8, and correspondingly, the terminal seat includes a wiring terminal seat and a common terminal seat. Specifically, as Figure 1 , Figure 7 , Figure 8 As shown, during the stator assembly process, the wire ends of the winding 5 enameled wire are crimped into the wiring structure of the common terminal 8, and are inserted into the heat shrink tube 7 for heat shrinkage, and are then arranged as a whole in the terminal installation cavity 311 of the common terminal seat, and finally the terminal sheath 4 is installed to complete the production of the common end of the stator; further, during the stator assembly process, the wire ends of the winding 5 enameled wire are crimped into the wiring structure of the terminal terminal 6, and are inserted into the heat shrink tube 7 for heat shrinkage, and are then arranged as a whole in the terminal installation cavity 311 of the terminal seat, and finally the terminal sheath 4 is installed to complete the production of the stator. In the assembly structure of the terminal terminal 6 and the common terminal 8, the terminal sheath 4 is respectively arranged on the terminal terminal seat and the common terminal seat, and respectively covers the terminal terminal 6 and the common terminal 8, thereby playing a protective role. As shown Figure 4 As shown, the wiring structure 61 is protected by a heat shrink tube 7, which solves the problem of terminal oxidation affecting contact resistance. By designing the L-shaped plug-in piece 62 in the wiring structure 61, the heat shrink tube can be installed after the terminal is crimped and the winding is connected, and the air is isolated by the heat shrink tube to prevent the terminal from oxidation.

[0059] like Figure 2-4 As shown, in some embodiments: the terminal is a terminal terminal 6, and the terminal terminal 6 is provided with a plug-in piece 62; the terminal seat is a terminal seat; a wire tail placement groove 314 is provided on the side of the terminal seat, and the wire tail placement groove 314 is connected to the terminal installation cavity 311 of the terminal seat; the terminal terminal 6 is arranged in the terminal installation cavity 311 of the terminal seat, and the plug-in piece 62 of the terminal terminal 6 extends out of the terminal seat along the wire tail placement groove 314. In this embodiment, reference Figure 7 As shown, taking the first wiring terminal seat 31 as an example, a wire tail placement groove 314 is provided on the side of the wiring terminal seat, and the wire tail placement groove 314 is connected to the terminal installation cavity 311 of the wiring terminal seat.

[0060] like Figure 2 , Figure 5As shown, in some embodiments: a terminal seat is provided on the stator frame, the terminal is a common terminal 8, the common 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 by a first terminal connecting bridge 84, and the second wiring structure 82 and the first wiring structure 83 are connected by a second terminal connecting bridge 85. The terminal block is a common terminal block; the common terminal block includes a first common terminal block 34, a second common terminal block 35 and a third common terminal block 36, a first connection bridge guard plate 37 is provided between the first common terminal block 34 and the second common terminal block 35, and a second connection bridge guard plate 38 is provided between the second common terminal block 35 and the third common terminal block 36; the first wiring structure 81 is arranged in the first common terminal block 34, the second wiring structure 82 is arranged in the second common terminal block 35, the third wiring structure 83 is arranged in the third common terminal block 36, the first terminal connection bridge 84 is arranged in the first connection bridge guard plate 37, and the second terminal connection bridge 85 is arranged in the second connection bridge guard plate 38. In this embodiment, a wire tail placement groove 314 is provided on one side of the first common terminal block 34 and the third common terminal block 36, and a wire tail placement groove 314 is provided on both sides of the second common terminal block 35, respectively, and the wire tail placement groove 314 is connected to the terminal installation cavity 311 of the common terminal block. The wire tail placement slots 314 provided in the common terminal block and the wiring terminal block are different, so as to achieve foolproofing. Figure 6 As shown, on the stator upper frame 3, the specific structure of the common terminal seat includes a first common terminal seat 34, a second common terminal seat 35 and a third common terminal seat 36, and a first connecting bridge guard plate 37 is provided between the first common terminal seat 34 and the second common terminal seat 35, and a second connecting bridge guard plate 38 is provided between the second common terminal seat 35 and the third common terminal seat 36. In the above scheme, by designing the above-mentioned common terminal seat structure on the stator upper frame 3, the first common terminal body 81 can be set in the first common terminal seat 34, the second common terminal body 82 can be set in the second common terminal seat 35, and the first terminal connecting bridge 84 is passed through the wire tail placement groove 314 and set in the first connecting bridge guard plate 37; the third common terminal body 83 is set in the third common terminal seat 36, and the second terminal connecting bridge 85 is passed through the wire tail placement groove 314 and set in the second connecting bridge guard plate 38, finally making the first common end body 81, the second common end body 82 and the third common end body 83 interconnected and conductive, and realizing the protection of the entire common terminal 8, and the installation is also relatively convenient and can prevent mistakes.

[0061] like Figure 1 , Figure 5 , Figure 6As shown, in some embodiments: the terminal 6 includes a first terminal, a second terminal and a third terminal; the winding 5 includes a U-phase winding, a V-phase winding and a W-phase winding; the wire end of the enameled wire of the U-phase winding is crimped into the first wiring structure 81 to conduct the common end of the U phase; the wire end of the enameled wire of the V-phase winding is crimped into the second wiring structure 82 to conduct the common end of the V phase; the wire end of the enameled wire of the W-phase winding is crimped into the third wiring structure 83 to conduct the common end of the W phase; the wire tail of the enameled wire of the U-phase winding is crimped into the body of the first terminal terminal to conduct the terminal of the U phase; the wire tail of the enameled wire of the V-phase winding is crimped into the body of the second terminal terminal to conduct the terminal of the V phase; the wire tail of the enameled wire of the W-phase winding is crimped into the body of the third terminal terminal to conduct the terminal of the W phase. In this embodiment, the terminal 6 includes a first terminal, a second terminal and a third terminal. Correspondingly, on the stator upper frame 3, the specific structure of the terminal block includes a first terminal block 31, a second terminal block 32 and a third terminal block 33. The three terminal blocks are respectively installed with three terminal terminals, and the three terminal terminals are corresponding to the wire tails of the U-phase winding, the V-phase winding and the W-phase winding in the crimped winding 5. Further, the winding 5 is a centralized winding.

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

[0063] like Figure 1 and Fig.12 As shown, in some embodiments: the inner ring of the stator frame is provided with a plurality of winding grooves along its circumference; the enameled wire is wound in the winding groove 13 to form the winding 5; the outer ring of the stator frame is provided with a plurality of frame wire posts 12 at intervals along its circumference, and the frame wire posts 12 are arranged outside the winding groove 13; the bridge wire of the winding 5 bypasses the frame wire posts 12 and extends to another winding groove 13. The outer ring of the stator lower frame 1 is provided with frame wire posts 12 at intervals along its circumference, and the bridge wire of the winding 5 can bypass its adjacent winding 5 through the frame wire posts 12, that is, the frame wire posts 11 are used for the bridge wire to cross from one winding groove 13 to another winding groove according to the preset route of the stator during winding, so as to achieve the avoidance effect.

[0064] like Figures 1 to 3 As shown, in some embodiments: the stator structure also includes a stator core 2, the stator frame includes a stator lower frame 1 and a stator upper frame 3; the stator lower frame 1 is arranged on the lower end surface of the stator core 2, and the stator upper frame 3 is arranged on the upper end surface of the stator core 2; the terminal seat is arranged on the upper end surface of the stator upper frame 3, specifically located in the circumferential direction of the upper end surface of the stator upper frame 3, so as to facilitate the press-fitting of the terminal.

[0065] Correspondingly, in combination with the above solution, the present invention also provides an electric motor, which includes the stator structure described above.

[0066] In some embodiments: the motor is a brushless DC motor.

[0067] The stator structure of the present application is applicable to a brushless DC motor, and the stator structure of the brushless DC motor is composed of a stator core as a magnetic conductive part and a winding as an excitation part. Figure 1 and Figure 2 As shown, the stator core 2 is covered with a skeleton, and a centralized winding is wound on the skeleton. The U, V, and W phase windings have three wire ends and three wire tails respectively. The wire ends of the U, V, and W phases are crimped to the common terminal on the skeleton, and the common terminals of the U, V, and W phases are connected; the wire tails of the U, V, and W phases are placed in the terminal blocks on the skeleton, and the terminal terminals are crimped. The terminal terminals can be plugged into the corresponding terminals of the same model or welded to the terminal blocks to lead out the three power lines U, V, and W. According to Fig.11 and Fig.13 As shown in the figure, the stator winding sequence and wiring schematic diagram are used to wind the winding 5, and the first winding wire end 51, the second winding wire end 52, the third winding wire end 53, the first winding wire end 54, the second winding wire end 55, and the third winding wire end 56 are led out from 1U, 2V, and 3W in the stator upper frame 3. The effect of winding the stator is as follows: Fig.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 so that the U, V and W three-phases are connected and conducted. After the common terminal 8 connected with the winding wire end is covered with a heat shrink tube 7 and heat-shrunk, it is placed in the common terminal seat (i.e., the first common terminal seat 34, the second common terminal seat 35 and the third common terminal seat 36) of 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 terminal 6 to lead out the U, V and W three-phase wires. The effect after crimping the terminals is as shown Figure 2 shown.

[0068] The present invention also provides an electric motor, the electric motor comprising the above-mentioned stator structure. Furthermore, the electric motor provided in the present application is a brushless DC motor.

[0069] The stator structure and motor proposed in this application have the following technical advantages:

[0070] (1) The stator structure proposed in the present application is designed with a V-shaped clamping cavity on the wiring structure of the stator structure terminal, and a peeling structure is designed on at least one side wall of the clamping cavity, so that the stator enameled wire can be clamped in the clamping cavity when it is pressed down into the clamping cavity, and the paint coating of the enameled wire is pierced to connect the terminal; the assembly structure is cleverly designed to improve installation efficiency.

[0071] (2) The stator structure proposed in the present application solves the problem that the terminals cannot be fixed by designing a terminal seat on the stator frame, which facilitates crimping of the terminals while fixing and protecting the terminals.

[0072] (3) The stator structure proposed in the present application has a terminal design with a plug-in piece, which can be crimped onto the terminal to lead out the power line, or can be welded to the circuit board to lead out the power line, thereby solving the problems of low automation level of the welding process and quality risks such as cold soldering.

[0073] (4) The stator structure proposed in the present application is designed such that the stator frame is provided with a connection bridge guard plate to provide a support plane for the terminal connection bridge, protect the terminal connection bridge from the impact of the injection molding material, and play a protective and fixing role.

[0074] (5) The stator structure proposed in the present application is designed with a terminal sleeve on the terminal seat, which can provide an injection molding plane to prevent the plastic sealing material from impacting the terminal inside the terminal seat, thereby reducing the axial movement of the terminal in the terminal seat.

[0075] (6) The stator structure proposed in the present application is designed in such a way that the heat shrink tube can be installed after the terminal is crimped with the enameled wire by designing the shape of the plug-in piece. The heat shrink tube isolates the air and prevents the terminal from oxidizing, thus solving the problem that the terminal oxidation affects the contact resistance.

[0076] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A stator structure, characterized in that: The stator structure comprises: a stator frame, a terminal and an enameled wire, wherein the terminal is arranged on the stator frame; the terminal comprises a wiring structure (61); a V-shaped clamping cavity (63) is provided on the wiring structure (61), and a peeling structure formed by a plurality of protrusions (64) is provided on at least one side wall of the clamping cavity (63); the enameled wire is crimped into the clamping cavity (63) to be electrically connected with the terminal.

2. The stator structure according to claim 1, characterized in that: The plurality of protrusions (64) are distributed in a grid pattern on at least one side wall of the clamping cavity (63).

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

5. The stator structure according to claim 1, characterized in that: The terminal is a common terminal (8), and 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 via a first terminal connection bridge (84), and the second wiring structure (82) and the first wiring structure (83) are connected via a second terminal connection bridge (85).

6. The stator structure according to claim 1, characterized in that: A terminal seat is provided on the stator frame, and a terminal installation cavity (311) is provided in the terminal seat; the wiring structure (61) is arranged in the terminal installation cavity (311).

7. The stator structure according to claim 6, characterized in that: A clamping portion (312) is provided on the inner wall of the terminal installation cavity (311); the wiring structure (61) and the clamping portion (312) are clamped and connected together.

8. The stator structure according to claim 6, characterized in that: The terminal seat is provided with a fixing portion (313); the fixing portion (313) is arranged on the outer wall of the terminal seat; the stator structure also includes a terminal sleeve (4), and a connecting portion is provided on the side of the terminal sleeve (4); the terminal sleeve (4) is clamped together with the fixing portion (313) through the connecting portion, so as to be arranged on the terminal seat; the terminal sleeve (4) covers the terminal installation cavity (311).

9. The stator structure according to claim 8, characterized in that: A clamping portion (42) is provided on the bottom side of the terminal shield (4); the terminal shield (4) is arranged on the terminal seat, and the clamping portion (42) is crimped onto the terminal.

10. The stator structure according to claim 6, characterized in that: The terminal is a terminal block (6), and a plug-in piece (62) is provided on the terminal block (6); the terminal seat is a terminal block; a wire tail placement groove (314) is provided on the side of the terminal block, and the wire tail placement groove (314) is connected to a terminal installation cavity (311) of the terminal block; the terminal block (6) is arranged in the terminal installation cavity (311) of the terminal block, and the plug-in piece (62) extends out of the terminal block along the wire tail placement groove (314).

11. The stator structure according to claim 5, characterized in that: A terminal seat is provided on the stator frame, and the terminal seat is a common terminal seat; the common terminal seat includes 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 provided between the first common terminal seat (34) and the second common terminal seat (35); a second connecting bridge guard plate (38) is provided 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).

12. The stator structure according to claim 1, characterized in that: A plurality of winding grooves (13) are provided on the inner ring of the stator frame along its circumferential direction; the enameled wire is wound in the winding grooves (13) to form a winding (5); An outer frame baffle (11) is provided on the outer ring of the stator frame along its circumferential direction, and the bridge wire of the winding (5) is arranged on the inner side of the outer frame baffle (11); and / or, A plurality of frame wire-passing posts (12) are arranged at intervals along the circumference of the outer ring of the stator frame, and the frame wire-passing posts (12) are arranged outside the winding slots (13); the bridge wires of the winding (5) bypass the frame wire-passing posts (12) and extend to another winding slot (13).

13. An electric motor, characterized in that: The electric motor comprises the stator structure according to any one of claims 1 to 12 above.

14. The electric motor according to claim 13, characterized in that: The motor is a brushless DC motor.

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