Stator member

Abstract

The utility model discloses a stator component. The stator component comprises an iron core, an insulating ring, three groups of coil windings, three lead wires and a wire fixing assembly, the iron core is provided with an iron ring main body and a plurality of inserting parts; the insulating ring comprises a top part, a middle part and a plurality of wound parts, an insertion channel is formed between each wound part and the middle part, and the iron ring main body is sleeved on the periphery of the middle part. Each group of coil windings comprises at least one coil, and the coils are wound on the periphery of the wound part. And one coil in each group of coil windings is provided with a connecting end part. Each lead wire is provided with a transition part and a tail end part. The wire fixing assembly comprises a connecting piece and a wire fixing piece, after the coil is wound on the periphery of the wound part, the three tail end parts are wound by the connecting piece, the wire fixing piece forms a clamping groove and an inlet and outlet, and the three tail end parts are inserted into the clamping groove from the inlet and outlet through the connecting piece.

Description

Technical Field

[0001] The utility model relates to a stator, in particular to a stator component. Background Art

[0002] The brushless DC motor consists of a motor body and a driver, wherein the stator of the motor body includes a plurality of coil windings, and the coil windings are divided into three phases, and the coil windings of the three phases are connected in a Y-type connection.

[0003] Specifically, each phase of the coil winding has a connection end and a terminal end. The connection end is connected to the control circuit through a connecting terminal; and the terminal end needs to be connected to the circuit board outside the stator through a terminal, and then the three terminal ends are connected through the corresponding structure on the circuit board. It can be seen that the connection between the three-phase coil windings of the existing stator is relatively complicated and inconvenient for mass production. Utility Model Content

[0004] An advantage of the present invention is that it provides a stator component to which the final end of the coil winding can be fixed, so that the stator component has a compact structure.

[0005] In order to achieve at least one of the above advantages of the present invention, the present invention provides a stator component, the stator component comprising:

[0006] An iron core, the iron core having an iron ring body and a plurality of plug-in parts, the local inner wall of the iron ring body extending along the radial direction of the iron ring body toward the center of the iron ring body by a preset length to form the plug-in part, and the plurality of the plug-in parts are distributed at intervals on the circumference;

[0007] An insulating ring, the insulating ring forms an insertion channel, the insulating ring includes a top, a middle part and a plurality of wrapped parts, the upper end of the middle part extends along the axial direction parallel to the insertion channel to form the top, the local inner wall of the middle part extends along the radial direction of the middle part toward the center of the middle part by a preset length to form the wrapped part, the plurality of wrapped parts are distributed at circumferential intervals, a plug-in channel connected to the insertion channel is formed between each of the wrapped parts and the middle part, the iron ring body is sleeved on the outer periphery of the middle part, and a single plug-in part is plugged into a single plug-in channel;

[0008] three groups of coil windings, each group of the coil windings comprising at least one coil, and the coil is wound around the outer periphery of the wound portion;

[0009] Three lead wires, one coil in each group of coil windings has a connection end, the three connection ends are respectively connected to the three lead wires, each lead wire has a transition portion and a terminal end, the transition portion extends between the connection end and the terminal end;

[0010] A wire fixing component, the wire fixing component includes a connecting piece and a wire fixing piece. After the coil is wound around the outer periphery of the wound portion, the transition portion formed by the extension of the connecting end portion extends toward the top, and the three final ends are wound by the connecting piece. The wire fixing piece is arranged at the top, and the wire fixing piece forms a slot and an entrance and exit connected to the slot. The three final ends are inserted into the slot from the entrance and exit through the connecting piece.

[0011] According to one embodiment of the utility model, the iron core also includes a plurality of clamping parts, each of which extends away from one end of the iron ring body to form a single clamping part, the plug-in part drives the clamping part to be inserted into the insertion channel, and the clamping part extends to the insertion channel and abuts against one end of the wound part away from the middle part.

[0012] According to an embodiment of the utility model, the insulating ring also includes multiple stop parts, and each of the wound parts has an end away from the iron ring body and extends radially along the plug-in channel formed by each of them to form a stop part, and the coil is confined between the stop part and the iron ring body.

[0013] According to an embodiment of the utility model, the three terminal ends are arranged side by side, and the three terminal ends are flush with one end away from the respective adjacent transition portions.

[0014] According to an embodiment of the present invention, the wire fixing member is disposed on an outer side wall of the top.

[0015] According to one embodiment of the utility model, the wire fixing member forms a stop protrusion on each of the two opposite side walls of the slot, and the two stop protrusions are arranged opposite to each other and close to the entrance and exit. When the connecting member drives the final end portion to move along a planar direction perpendicular to the length direction of the final end portion, the stop protrusion is squeezed by the connecting member and elastically deformed until the connecting member drives the final end portion to move into the slot, and then the stop protrusion is reset and fixes the connecting member together with the inner wall of the slot.

[0016] According to an embodiment of the utility model, each stop protrusion forms a stop wall, and after the connecting member moves into the slot, the two stop walls abut against the outer wall of the connecting member.

[0017] According to an embodiment of the utility model, each stop protrusion further forms a pressure-bearing wall, wherein the pressure-bearing wall and the stop wall are adjacent to each other, and the connection between the stop wall and the pressure-bearing wall is chamfered.

[0018] According to an embodiment of the utility model, the top forms at least one through groove penetrating the top side wall, the groove diameter of the through groove is adapted to the diameter of the transition portion, and the transition portion extends from the inner side of the top through the through groove to the outer side of the top.

[0019] According to an embodiment of the utility model, at least one limiting column is formed at an end of the top away from the middle portion, and the transition portion bypasses the outer periphery of the limiting column and then passes through the through slot so that the terminal end bypasses the outer wall of the top. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural schematic diagram of the stator component of the utility model in one state is shown.

[0021] Figure 2 A structural schematic diagram of the stator component of the utility model in another state is shown.

[0022] Figure 3 The schematic diagram of the structure of the iron core of the utility model is shown.

[0023] Figure 4 The schematic diagram of the structure of the insulating ring of the utility model is shown. DETAILED DESCRIPTION

[0024] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] refer to Figure 1 and Figure 2 The stator component according to a preferred embodiment of the utility model will be described in detail below, a rotor is rotatably mounted on the stator component. The stator component includes an iron core 10, an insulating ring 20, three sets of coil windings 30, three lead wires 40 and a fixed wire assembly 50.

[0028] refer to Figure 3 Specifically, the iron core 10 has an iron ring body 11 and a plurality of plug-in parts 12. The local inner wall of the iron ring body 11 extends along the radial direction of the iron ring body 11 toward the center of the iron ring body 11 by a preset length to form the plug-in part 12, and the plurality of plug-in parts 12 are distributed at circumferential intervals.

[0029] In a preferred embodiment, the iron core 10 is made by stacking and stamping a plurality of electromagnetic steel plates.

[0030] As a modified embodiment, the iron core 10 is integrally formed of magnetic conductive material.

[0031] refer to Figure 4 , the insulating ring 20 forms an insertion channel 2001. A rotor is rotatably mounted on the insertion channel 2001. The insulating ring 20 includes a top 21, a middle part 22 and a plurality of wound parts 23. The upper end of the middle part 22 extends along an axial direction parallel to the insertion channel 2001 to form the top 21. The local inner wall of the middle part 22 extends along the radial direction of the middle part 22 toward the center of the middle part 22 by a preset length to form the wound part 23, and a plurality of the wound parts 23 are distributed at circumferential intervals. A plug-in channel 2002 connected to the insertion channel 2001 is formed between each of the wound parts 23 and the middle part 22. The iron ring body 11 is sleeved on the outer periphery of the middle part 22, and a single plug-in part 12 is plugged into a single plug-in channel 2002.

[0032] refer to Figure 1 , Figure 3 and Figure 4 Preferably, the iron core 10 further includes a plurality of clamping portions 13. Each of the plug-in portions 12 extends from one end of the iron ring body 11 to form a single clamping portion 13. The plug-in portion 12 drives the clamping portion 13 to be inserted into the insertion channel 2002, and the clamping portion 13 extends to the insertion channel 2001 and abuts against one end of the wound portion 23 away from the middle portion 22.

[0033] The three groups of coil windings 30 are respectively a U phase, a V phase and a W phase. Each group of coil windings 30 includes at least one coil 31. The coil 31 is wound around the outer periphery of the wound portion 23.

[0034] refer to Figure 1 and Figure 4 Preferably, the insulating ring 20 further includes a plurality of stoppers 24. Each of the wound portions 23 extends away from one end of the iron ring body 11 to form a stopper 24. The coil 31 is confined between the stopper 24 and the iron ring body 11, and the stopper 24 and the iron ring body 11 can prevent the coil 31 from falling off from the wound portion 23.

[0035] In a preferred embodiment, the iron core 10 and the insulating ring 20 are integrally formed by injection molding.

[0036] refer to Figure 2 , one of the coils 31 in each group of the coil windings 30 has a connection end 311. The three connection ends 311 are respectively connected to the three lead wires 40. Each lead wire 40 has a transition portion 41 and a terminal end 42. The transition portion 41 extends between the connection end 311 and the terminal end 42. The wire fixing component 50 includes a connector 51. After the coil 31 is wound around the outer periphery of the wound portion 23, the transition portion 41 formed by the extension of the connection end 311 extends toward the top 21, and the three terminal ends 42 are wound by the connector 51. The connector 51 is used to fix the three terminal ends 42.

[0037] Preferably, the coil 31 and the lead wire 40 are formed integrally.

[0038] In one example, the connecting member 51 is implemented as a copper ring. The copper ring is made by bending a copper sheet. Figure 2 and Figure 4 Furthermore, the wire fixing assembly 50 further includes a wire fixing member 52, and the wire fixing member 52 is disposed on the top 21. The wire fixing member 52 forms a slot 5201 and an inlet and outlet 5202 connected to the slot 5201. The three end portions 42 are inserted into the slot 5201 from the inlet and outlet 5202 through the connecting member 51, so that the wire fixing member 52 fixes the end portions 42, making the stator component structure compact. In addition, the wire fixing member 52 can fix the wire ends and prevent the wire ends from contacting with other conductor parts, thereby avoiding short circuits, electric sparks, etc.

[0039] In a preferred embodiment, the wire fixing member 52 and the insulating ring 20 are integrally formed by injection molding.

[0040] It is worth mentioning that the three end portions 42 are arranged side by side, and the ends of the three end portions 42 away from the respective adjacent transition portions 41 are flush, so that the ends of the three end portions 42 away from the respective adjacent transition portions 41 are welded. Welding can closely connect the three end portions 42 and reduce the contact resistance of the wire ends, ensure the stability of the working current of the coil winding 30, and thus extend the service life of the stator component.

[0041] Preferably, the wire fixing member 52 is disposed on the outer side wall of the top 21 , so that the staff can obtain a larger installation and removal space to facilitate the installation or removal of the connecting member 51 .

[0042] Preferably, the connecting member 51 is inserted into or pulled out of the slot 5201 through the entrance 5202 along a plane direction perpendicular to the length direction of the terminal end 42 .

[0043] In a preferred embodiment, the lateral width of the connecting member 51 along the direction in which the three end portions 42 are arranged side by side is defined as follows. The lateral width of the connecting member 51 is adapted to the radial dimension of the slot 5201 .

[0044] refer to Figure 4 Preferably, the wire fixing member 52 forms a stop protrusion 521 on two opposite side walls of the slot 5201. The two stop protrusions 521 are arranged opposite to each other and close to the entrance 5202. When the connecting member 51 drives the end portion 42 to move along a plane direction perpendicular to the length direction of the end portion 42, the stop protrusion 521 is squeezed by the connecting member 51 and elastically deformed until the connecting member 51 drives the end portion 42 to move into the slot 5201. Then, the stop protrusion 521 is reset and fixes the connecting member 51 together with the inner wall of the slot 5201, so that the connecting member 51 is firmly fixed to the slot 5201 to prevent the connecting member 51 from falling off from the slot 5201 due to vibration.

[0045] Furthermore, each stop protrusion 521 forms a stop wall 5211. After the connecting member 51 moves into the slot 5201, the two stop walls 5211 abut against the outer wall of the connecting member 51 to fix the connecting member 51 with the inner wall of the slot 5201.

[0046] It is worth mentioning that an obtuse angle is formed between the stop wall 5211 and the adjacent side wall of the slot 5201 so that the connector 51 can be pulled out.

[0047] Preferably, each stop protrusion 521 further forms a pressure-bearing wall 5212, wherein the pressure-bearing wall 5212 is adjacent to the stop wall 5211. The direction in which one end of the pressure-bearing wall 5212 extends toward the stop wall 5211 forms an acute angle with the insertion direction of the connector 51, so that the connector 51 can be easily pressed into the slot 5201.

[0048] Preferably, the connection between the stop wall 5211 and the pressure wall 5212 is chamfered so that the connecting member 51 can smoothly move into or out of the slot 5201 .

[0049] Further, the top 21 forms at least one through slot 2101 penetrating the side wall of the top 21. The slot diameter of the through slot 2101 is adapted to the diameter of the transition portion 41. The transition portion 41 extends from the inner side of the top 21 through the through slot 2101 to the outer side of the top 21, and after the through slot 2101 fixes the transition portion 41, the terminal end 42 is fixed to the slot 5201 through the connector 51.

[0050] Preferably, the top portion 21 further forms a top opening 2102 communicating with the through slot 2101. The transition portion 41 can be moved into or out of the through slot 2101 from the top opening 2102 so as to be engaged with the transition portion 41.

[0051] Preferably, at least one limiting column 211 is formed at one end of the top portion 21 away from the middle portion 22. The transition portion 41 bypasses the periphery of the limiting column 211 and then passes through the through slot 2101 so that the terminal end 42 is bypassed to the outer wall of the top portion 21. The limiting column 211 is used to fix the transition portion 41 so that the transition portion 41 is firmly wrapped around the insulating ring 20.

[0052] Preferably, a plurality of the limiting posts 211 are provided, and the plurality of the limiting posts 211 are distributed along a circumference. The longer transition portion 41 is wound around the plurality of the limiting posts 211 to prevent the transition portion 41 from being attached to the coil 31 .

[0053] refer to Figure 2 Furthermore, the stator component further includes three terminals 60. One coil 31 in each group of the coil windings 30 has a terminal end 312. The three terminal ends 312 are respectively connected to the three terminals 60, and the terminals 60 are electrically connected to the control circuit so that the coil windings 30 are powered on and off.

[0054] refer to Figure 2 and Figure 4Preferably, the top 21 forms a three-way insertion slot 2103 . The connection terminal 60 is partially inserted into the insertion slot 2103 .

[0055] The utility model also provides a method for fixing the stator component, comprising the following steps:

[0056] (A) The coil 31 is wound around the wound portion 23;

[0057] (B) the transition portion 41 formed by the extension of the coil 31 extends toward the top 21, and the three end portions 42 are wound by the connecting member 51;

[0058] (C) The connecting member 51 is inserted into the slot 5201 through the entrance 5202 along a plane direction perpendicular to the length direction of the terminal end 42 .

[0059] Before step (B), a step (D) is also included, wherein the transition portion 41 passes through the through slot 2101 and the terminal end 42 extends to the outer periphery of the top portion 21 .

[0060] Before step (D), a step (E) is also included, in which one end of the transition portion 41 away from the through slot 2101 goes around the outer periphery of the limiting column 211 .

[0061] Before step (C), a step (F) is further included, in which the end portion 42 away from an end portion of the respective adjacent transition portion 41 is welded.

[0062] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A stator component, characterized in that: The stator component comprises: An iron core, the iron core having an iron ring body and a plurality of plug-in parts, the local inner wall of the iron ring body extending along the radial direction of the iron ring body toward the center of the iron ring body by a preset length to form the plug-in part, and the plurality of the plug-in parts are distributed at intervals on the circumference; An insulating ring, the insulating ring forms an insertion channel, the insulating ring includes a top, a middle part and a plurality of wrapped parts, the upper end of the middle part extends along the axial direction parallel to the insertion channel to form the top, the local inner wall of the middle part extends along the radial direction of the middle part toward the center of the middle part by a preset length to form the wrapped part, the plurality of wrapped parts are distributed at circumferential intervals, a plug-in channel connected to the insertion channel is formed between each of the wrapped parts and the middle part, the iron ring body is sleeved on the outer periphery of the middle part, and a single plug-in part is plugged into a single plug-in channel; three groups of coil windings, each group of the coil windings comprising at least one coil, and the coil is wound around the outer periphery of the wound portion; Three lead wires, one coil in each group of coil windings has a connection end, the three connection ends are respectively connected to the three lead wires, each lead wire has a transition portion and a terminal end, the transition portion extends between the connection end and the terminal end; A wire fixing component, the wire fixing component includes a connecting piece and a wire fixing piece. After the coil is wound around the outer periphery of the wound portion, the transition portion formed by the extension of the connecting end portion extends toward the top, and the three final ends are wound by the connecting piece. The wire fixing piece is arranged at the top, and the wire fixing piece forms a slot and an entrance and exit connected to the slot. The three final ends are inserted into the slot from the entrance and exit through the connecting piece.

2. The stator component according to claim 1, characterized in that: The iron core also includes a plurality of clamping parts, each of which extends away from one end of the iron ring body to form a single clamping part, and the clamping part drives the clamping part to be inserted into the insertion channel, and the clamping part extends to the insertion channel and abuts against one end of the wound part away from the middle part.

3. The stator component according to claim 2, characterized in that: The insulating ring also includes multiple stoppers, and each of the wound portions extends radially along the respective formed insertion channels at one end away from the iron ring body to form a stopper, and the coil is confined between the stopper and the iron ring body.

4. The stator component according to claim 3, characterized in that: The three terminal ends are arranged side by side, and the three terminal ends are flush with one end away from the respective adjacent transition portions.

5. The stator component according to claim 4, characterized in that: The wire fixing member is arranged on the outer side wall of the top.

6. The stator component according to claim 5, characterized in that: The wire fixing member forms a stop protrusion on each of the two opposite side walls of the slot, and the two stop protrusions are arranged opposite to each other and close to the entrance and exit. When the connecting member drives the final end portion to move along a plane direction perpendicular to the length direction of the final end portion, the stop protrusion is squeezed by the connecting member and elastically deformed until the connecting member drives the final end portion to move into the slot, and then the stop protrusion is reset and fixes the connecting member together with the inner wall of the slot.

7. The stator component according to claim 6, characterized in that: Each stop protrusion forms a stop wall. After the connecting member moves into the clamping groove, the two stop walls abut against the outer wall of the connecting member.

8. The stator component according to claim 7, characterized in that: Each stop protrusion also forms a pressure-bearing wall, wherein the pressure-bearing wall and the stop wall are adjacent to each other, and a connection between the stop wall and the pressure-bearing wall is chamfered.

9. The stator component according to claim 8, characterized in that: The top forms at least one through slot penetrating the top side wall, the slot diameter of the through slot is adapted to the diameter of the transition portion, and the transition portion extends from the inner side of the top through the through slot to the outer side of the top.

10. The stator component according to claim 9, characterized in that: At least one limiting column is formed at an end of the top away from the middle portion, and the transition portion bypasses the outer periphery of the limiting column and then passes through the through slot so that the terminal end bypasses the outer wall of the top.

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