Hub motor assembly

Abstract

The utility model relates to a hub motor assembly, which comprises a hub motor, wherein the hub motor is provided with a hub shell, a motor and a circuit board; the sleeving shaft is arranged in the first shaft hole of the hub shell in a penetrating mode and fixedly arranged on the outer end face of the motor, and the sleeving shaft is provided with a plurality of core wire holes formed at intervals; the power line is provided with a plurality of core wires and a sheath wrapping the core wires, the sheath is provided with a first sheath and a second sheath, the second sheath is connected to the first sheath, and the outer diameter of the second sheath is larger than that of the first sheath; the lead piece is connected to the sleeving shaft, the lead piece is provided with two small-diameter grooves and a large-diameter groove, and the large-diameter groove is communicated between the two small-diameter grooves; the first sheath of the power line is arranged in the small-diameter groove, the second sheath of the power line is arranged in the large-diameter groove, and the outer diameter of the second sheath is larger than the inner diameter of the small-diameter groove. Therefore, the hub motor assembly provided by the utility model can achieve the effect that the power line is prevented from being pulled and is not easy to damage.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hub motor, especially relates to a hub motor assembly capable of preventing power line from being pulled and loosened or broken. BACKGROUND

[0002] The invention patent CN1590201A discloses a hub motor for bicycle, the wiring take-out part includes a guide member which is non-rotatably matched to the screw cap to guide the wiring, and a cover member which covers the guide member. The cover member forms a shape covering the whole outer side surface except the surface opposite to the swing arm of the guide member. However, the guide member and the cover member of the patent do not have the design of resisting axial tension, and cannot effectively prevent the wiring from being pulled, and still have the hidden danger that the wiring is easily loosened or broken when being pulled. In addition, the assembly and disassembly of the elements of the patent are still inconvenient. Furthermore, the wiring of the patent still rubs with other elements, and thus is easily worn. Therefore, the patent case still has the space for improvement in structure. SUMMARY

[0003] The main purpose of the utility model is to provide a hub motor assembly which can prevent the power line from being pulled and damaged.

[0004] Another purpose of the utility model is to provide a hub motor assembly which can be conveniently assembled and disassembled.

[0005] Another purpose of the utility model is to provide a hub motor assembly which can avoid the friction of the power line and prevent the power line from being damaged.

[0006] To achieve the aforementioned main objectives, the hub motor assembly of this utility model includes a hub motor, comprising a hub housing, a motor, and a circuit board. One end of the hub housing has a first shaft hole. The motor is disposed within the hub housing and has an outer end face facing the first shaft hole. The circuit board is disposed within the hub housing and fixed to the outer end face of the motor. A sleeve shaft passes through the first shaft hole of the hub housing and is fixed to the outer end face of the motor. The sleeve shaft has an outer shaft portion and forms a second shaft hole, a groove radially communicating with the second shaft hole, and an inner ring portion radially protruding from a hole wall of the second shaft hole. The inner ring portion has a plurality of spaced-apart core wire holes. A power cord has... Multiple core wires, one end of which passes through the groove of the sleeve shaft into the second shaft hole of the sleeve shaft, and through multiple core wire holes of the sleeve shaft to enter the hub housing and electrically connect to the circuit board; a sheath covering the core wires, the sheath having a first sheath and a second sheath, the second sheath being connected to the first sheath, the outer diameter of the second sheath being larger than the outer diameter of the first sheath; and a lead wire connected to the sleeve shaft, the lead wire having two small diameter grooves and a large diameter groove, the large diameter groove being connected between the two small diameter grooves; a first sheath of the power cord being fitted into the small diameter groove, and a second sheath of the power cord being fitted into the large diameter groove, the outer diameter of the second sheath being larger than the inner diameter of the small diameter groove.

[0007] As can be seen from the above, the hub motor assembly of this utility model utilizes the second protective sleeve of the power supply to be fitted into the large-diameter groove, so that the second protective sleeve cannot be displaced axially, and the multiple core wires of the power supply can be prevented from being easily damaged by pulling.

[0008] Preferably, the socket shaft has an inner sleeve, and the lead wire has a second sleeve, with the inner sleeve of the socket shaft and the second sleeve of the lead wire sleeved together. Therefore, the socket shaft and the lead wire can be securely joined.

[0009] Preferably, the sleeve shaft further includes an inner shaft sleeve that extends from an inner periphery of the inner ring portion along an axial direction of the second shaft hole toward the groove; the core wires are located between the inner shaft sleeve and the outer shaft portion. Therefore, the inner shaft sleeve and the outer shaft portion can protect multiple core wires.

[0010] Preferably, the socket shaft has a first anti-rotation plane formed by the inner edge of the outer shaft portion, and the lead wire has a second anti-rotation plane that abuts against the first anti-rotation plane of the outer shaft portion. Therefore, relative rotation between the socket shaft and the lead wire can be prevented.

[0011] Preferably, the socket shaft has an anti-rotation recess recessed into the first anti-rotation plane, and the lead wire has an anti-rotation protrusion formed in the second anti-rotation plane, with the anti-rotation protrusion of the lead wire accommodated in the anti-rotation recess of the socket shaft. Therefore, relative rotation between the socket shaft and the lead wire can be prevented.

[0012] Preferably, the sleeve shaft has two inner protrusions formed inwardly from both sides of the split groove, and the lead wire member has two outer protrusions respectively engaged with the inner protrusions of the sleeve shaft. Thus, the sleeve shaft and the lead wire member can be more effectively fixed axially and prevented from being separated.

[0013] Preferably, the sleeve shaft has two recessed holes recessed away from both sides of the split groove, and each of the recessed holes accommodates the inner protrusion of the sleeve shaft. Thus, a tool can be inserted into the two recessed holes to deform at least one of the inner protrusion of the sleeve shaft and the outer protrusion of the lead wire member, so that the inner protrusion of the sleeve shaft and the outer protrusion of the lead wire member are not engaged and can be separated.

[0014] Preferably, the lead wire member has two inclined surfaces respectively extended from the outer protrusions, and the inclined surfaces are used to slide against the inner protrusions of the sleeve shaft. Thus, the lead wire member can be more easily assembled to the sleeve shaft.

[0015] Preferably, the lead wire member has a core separation groove, and the core separation groove is communicated with the small-diameter groove. The core separation groove is adapted to accommodate a plurality of core wires of the power cord. Thus, the core separation groove of the lead wire member can separate and protect the plurality of core wires of the power cord.

[0016] Preferably, the lead wire member has two small-diameter grooves, and the opening size of each of the small-diameter grooves is smaller than the outer diameter of the first sheath of the power cord. Thus, the first sheath of the power cord can be prevented from being separated from the lead wire member.

[0017] Preferably, the lead wire member has a through hole, and the through hole is penetrated to the large-diameter groove. Thus, the through hole of the lead wire member can be used for a tool to penetrate and abut against the second sheath of the power cord.

[0018] Preferably, the hub motor assembly further comprises a wire blocking member, and the wire blocking member is assembled to the sleeve shaft and separates the sleeve shaft from the power cord. Thus, the power cord can be prevented from being abraded by the sleeve shaft and thus damaged.

[0019] Preferably, the wire blocking member has a first blocking portion located at the inner edge of the outer shaft portion of the sleeve shaft, a second blocking portion connected to the first blocking portion and corresponding to the inner ring portion of the sleeve shaft, and a third blocking portion connected to the first blocking portion and located at the split groove of the sleeve shaft. Thus, the power cord can be prevented from being abraded by the outer shaft portion and the split groove of the sleeve shaft and thus damaged.

[0020] The detailed structure, characteristics, assembly or use of the hub motor assembly provided by the present application will be described in the following detailed description of the embodiments. However, those skilled in the art should understand that the detailed description and the specific embodiments listed in the implementation of the present application are only used to illustrate the present application, and are not used to limit the patent application range of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and other objects, features and advantages of the present application will become more apparent from the following description of the preferred embodiments of the present application with reference to the accompanying drawings, in which:

[0022] Figure 1 FIG. 1 is a perspective view of a hub motor assembly according to a preferred embodiment of the present application;

[0023] Figure 2 FIG. 2 is a partial perspective exploded view of the hub motor assembly according to the preferred embodiment of the present application;

[0024] Figure 3 FIG. 3 is a perspective assembly view of some components according to the preferred embodiment of the present application;

[0025] Figure 4 FIG. 4 is another perspective assembly view of some components according to the preferred embodiment of the present application;

[0026] Figure 5 FIG. 5 is a planar cross-sectional view of some components according to the preferred embodiment of the present application;

[0027] Figure 6 FIG. 6 is a planar exploded cross-sectional view of some components according to the preferred embodiment of the present application;

[0028] Figure 7 FIG. 7 is a perspective exploded view of some components according to the preferred embodiment of the present application;

[0029] Figure 8 FIG. 8 is another perspective exploded view of some components according to the preferred embodiment of the present application;

[0030] Figure 9 FIG. 9 is another perspective exploded view of some components according to the preferred embodiment of the present application.

[0031] In the above-described drawings, the meanings of reference numerals are as follows:

[0032] 10, hub motor assembly

[0033] 20, hub motor

[0034] 21, hub shell

[0035] 212, first shaft hole

[0036] 22, support shaft

[0037] 23, ratchet sleeve

[0038] 24, motor

[0039] 242, outer end surface

[0040] 244, first screw hole

[0041] 246, second threaded hole;

[0042] 248, motor shaft hole;

[0043] 25, circuit board;

[0044] 251, first through hole;

[0045] 252, second through hole;

[0046] 254, hollow groove;

[0047] 30, sleeve shaft;

[0048] 31, outer shaft portion;

[0049] 311, second shaft hole;

[0050] 32, inner shaft cylinder;

[0051] 321, inner shaft cylinder hole;

[0052] 33, inner ring portion;

[0053] 34, core wire hole;

[0054] 35, section groove;

[0055] 351, recessed hole;

[0056] 352, inner convex edge;

[0057] 36, fork portion;

[0058] 361, first rotation-stopping plane;

[0059] 362, rotation-stopping recessed portion;

[0060] 37, wing portion;

[0061] 38, countersunk hole;

[0062] 40, power cord;

[0063] 41, plug;

[0064] 42, sheath;

[0065] 421, first sheath;

[0066] 422, second sheath;

[0067] 43, core wire;

[0068] 50, lead member;

[0069] 51, second cylinder;

[0070] 511, outer convex edge;

[0071] 512、bevel;

[0072] 52, lead inner barrel;

[0073] 521, lead inner barrel hole;

[0074] 53, second rotation-stopping plane;

[0075] 54, rotation-stopping protrusion;

[0076] 55, extension;

[0077] 56, core separating groove;

[0078] 57, small-diameter groove;

[0079] 58, large-diameter groove;

[0080] 59, through hole;

[0081] 60, wire blocking member;

[0082] 61, first blocking portion;

[0083] 62, second blocking portion;

[0084] 63, blocking portion wire groove;

[0085] 64, third blocking portion;

[0086] 65, blocking portion protruding edge;

[0087] S1, first screw;

[0088] S2, second screw. DETAILED DESCRIPTION

[0089] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and the accompanying drawings.

[0090] The terms used herein are merely used to describe specific embodiments, and are not intended to limit the present application. The terms "include", "contain" and the like used herein indicate the existence of the described features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0091] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted to have meanings consistent with the context of the present specification, and should not be interpreted in an idealized or overly formal manner.

[0092] In the event that a statement similar to "at least one of A, B, and C, etc." is used, it is generally intended that the inclusion of at least one of A, B, or C should be treated as an inclusive of A alone, or B alone, or C alone, or of two of the items A, B, and C in combination, or of all of the items A, B, and C in combination, unless the context clearly indicates otherwise. In the event that a statement similar to "at least one of A, B, or C etc." is used, it is generally intended that the inclusion of at least one of A, B, or C should be treated as an inclusive of A alone, or B alone, or C alone, or of two of the items A, B, and C in combination, or of all of the items A, B, and C in combination, unless the context clearly indicates otherwise.

[0093] It is also to be noted that the directional terms used in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are merely used with reference to the orientation of the drawings and are not intended to limit the scope of the present application. Throughout the drawings, the same elements are denoted by the same or similar reference numerals. Wherever possible, conventional structures or configurations have been omitted or simplified to avoid obscuring the understanding of the present application.

[0094] The applicant first notes that throughout the specification, including the following embodiments and claims, the terms of orientation are based on the orientation of the drawings. Second, in the following embodiments and drawings, the same element numbers represent the same or similar elements or structural features.

[0095] Referring to Figure 1 and Figure 2 The hub motor assembly 10 of a preferred embodiment of the present application comprises a hub motor 20, a set of shafts 30, a power cord 40, a lead wire member 50, and a wire blocking member 60.

[0096] As Figure 1 and Figure 2As shown, the hub motor 20 has a hub housing 21 and a motor 24 disposed within the hub housing 21. One end of the hub housing 21 has a first shaft hole 212, and the other end of the hub housing 21 is provided with a support shaft 22 and a ratchet sleeve 23 rotatably fitted onto the support shaft 22. The ratchet sleeve 23 is connected to the motor 24 through a reduction gear set (not shown) disposed within the hub housing 21, so that the ratchet sleeve 23 can be driven to rotate by the motor 24. In addition, the motor 24 has an outer end face 242 facing the first shaft hole 212. The outer end face 242 has a plurality of first screw holes 244 and a plurality of second screw holes 246, and the outer end face 242 is penetrated by a motor shaft hole 248 for a quick-release shaft (not shown) to pass through. The hub motor 20 also has a circuit board 25 disposed within the hub housing 21. The outer periphery of the circuit board 25 has multiple first through holes 251. Multiple first screws S1 are inserted through these first through holes 251 and locked into these first screw holes 244, thereby fixing the circuit board 25 to the outer end face 242 of the motor 24. In addition, the circuit board 25 also has two through holes 252 for a quick-release shaft (not shown in the figure) to pass through, and three equally spaced slots 254 surrounding the second through holes 252. Since how the hub motor 20 operates is not the focus of this utility model, its detailed structure and operating principle will not be described in detail here.

[0097] like Figures 3 to 9 As shown, the sleeve shaft 30 has an outer shaft portion 31, a second shaft hole 311 formed by the outer shaft portion 31, an inner shaft cylinder 32 formed inside the outer shaft portion 31, an inner shaft cylinder hole 321 formed inside the inner shaft cylinder 32 for a quick-release shaft (not shown in the figure) to pass through, an inner ring portion 33 that protrudes radially from the hole wall of the second shaft hole 311, and a plurality of core wire holes 34 (arrangement not limited) passing through the inner ring portion 33. One end of the outer shaft portion 31 has a groove 35 that radially communicates with the second shaft hole 311 and two oppositely arranged connecting forks 36. The sleeve shaft 30 abuts against the rear fork (not shown in the figure) through the connecting fork portions 36 and cannot rotate. The sleeve shaft 30 also has two recessed holes 351 formed by grooves 35, two inwardly protruding edges 352 formed by the two sides of the grooves 35, two opposing first anti-rotation planes 361 formed on the inner edge of the outer shaft portion 31, and two anti-rotation recesses 362 formed by the first anti-rotation planes 361. In addition, the sleeve shaft 30 also has three wings 37, each wing 37 being radially connected to the other end of the outer shaft portion 31, and each wing 37 having a countersunk hole 38. On the one hand, the outer shaft portion 31 of the sleeve shaft 30 is coaxially inserted into the first shaft hole 212 of the hub housing 21, and a bearing (not shown in the figure) is disposed between the outer shaft portion 31 and the first shaft hole 212, so that the hub housing 21 can rotate relative to the sleeve shaft 30. On the other hand, the sleeve shaft 30 passes through the hollow slots 254 of the circuit board 25 with these wings 37, and then passes through these countersunk holes 38 and is locked in the second screw holes 246 by three second screws S2, so that the sleeve shaft 30 is fixed to the outer end face 242 of the motor 24.

[0098] The plurality of core wires 43 are separated from the quick release shaft by the inner shaft cylinder 32 and the outer shaft portion 31 to avoid mutual interference and damage to the plurality of core wires 43. In addition, a glue (not shown in the figure) can be injected between the inner shaft cylinder 32 and the outer shaft portion 31 to fix the core wires 43 by the glue (not shown in the figure) to improve the structural stability of the core wires 43.

[0099] As shown in Figures 3 to 9 The power cord 40 has a plug 41, a sheath 42, and a plurality of core wires 43. One end of the sheath 42 is connected to the plug 41, and the other end of the sheath 42 is adjacent to the split groove 35 of the sleeve shaft 30 but does not extend into the second shaft hole 311. The sheath 42 has a first sheath 421 and a second sheath 422, and the second sheath 422 is located at one part of the first sheath 421. The outer diameter of the second sheath 422 is larger than that of the first sheath 421. The second sheath 422 can be integrally formed with the first sheath 421, or the second sheath 422 can be sleeved and fixed to the first sheath 421. The plurality of core wires 43 are arranged in the sheath 42. One end of the plurality of core wires 43 is connected to the plug 41, and the other end of the plurality of core wires 43 passes through the split groove 35 of the sleeve shaft 30 into the second shaft hole 311 of the sleeve shaft 30 and then passes through the core wire holes 34 of the sleeve shaft 30 into the hub shell 21 to be electrically connected to the circuit board 25 in a welding manner. In other words, the plurality of core wires 43 are located between the inner shaft cylinder 32 and the outer shaft portion 31. It should be noted that in order to prevent the core wires 43 from being loosened from the core wire holes 34, a glue (not shown in the figure) can be directly injected into the core wire holes 34 to fix the core wires 43 by the glue (not shown in the figure) to improve the structural stability of the core wires 43.

[0100] As shown in Figures 3 to 9As shown, the lead member 50 is connected to the sleeve joint shaft 30, and the lead member 50 has a second cylinder 51, two outer flanges 511, a lead inner cylinder 52, a lead inner cylinder hole 521, a second rotation stopping plane 53, a rotation stopping protrusion 54, a lead extension 55, a core separating groove 56, two small diameter grooves 57, a large diameter groove 58, and a through hole 59. The second cylinder 51 is inserted into the outer shaft portion 31 of the sleeve joint shaft 30, the outer flanges 511 are formed on the two sides of the second cylinder 51 and are accommodated in the concave hole 351 of the sleeve joint shaft 30 and are clamped with the inner flange 352, the lead inner cylinder 52 is sleeved and connected to the outer shaft cylinder 32 of the sleeve joint shaft 30. The first rotation stopping plane 361 of the sleeve joint shaft 30 is close to the second rotation stopping plane 53 of the lead member 50. The rotation stopping protrusion 54 is formed on the second rotation stopping plane 53 and is accommodated in the rotation stopping concave portion 362. The lead extension 55 is connected to the second cylinder 51. The core separating groove 56 is suitable for accommodating the plurality of core wires 43 of the power line 40. The two small diameter grooves 57 are formed at the two ends of the lead extension 55, one of which is communicated with the core separating groove 56, and the opening size of each small diameter groove 57 is slightly smaller than the outer diameter of the first sheath 421, and the first sheath 421 of the power line 40 is installed in the small diameter groove 57. The large diameter groove 58 is communicated between the two small diameter grooves 57, the second sheath 422 of the power line 40 is installed in the large diameter groove 58, and the outer diameter of the second sheath 422 of the power line 40 is larger than the inner diameter of the small diameter groove 57. The through hole 59 penetrates to the large diameter groove 58, and a tool can be inserted into the through hole 59 to abut against the second sheath 422 of the power line 40 to displace it.

[0101] The concave hole 351 can also be used for a tool to be inserted and abutted to deform the inner flange 352 of the sleeve joint shaft 30 outward and / or the outer flange 511 of the lead member 50 inward, so that the two outer flanges 511 are no longer clamped in the inner flange 352, and the sleeve joint shaft 30 and the lead member 50 can be detached and separated.

[0102] The lead member 50 has two inclined surfaces 512 respectively extended from the outer flange 511, which are used to slide against the inner flange 352 of the sleeve joint shaft 30, so that the lead member 50 can be axially combined to the sleeve joint shaft 30.

[0103] As shown, Figures 3 to 9 The line blocking member 60 is installed on the sleeve joint shaft 30, and the line blocking member 60 has a first blocking portion 61, a second blocking portion 62, a blocking portion wire groove 63, a third blocking portion 64, and a blocking portion flange 65. The first blocking portion 61 is located between the outer shaft portion 31 and the inner shaft cylinder 32 of the sleeve joint shaft 30, the second blocking portion 62 is connected to the first blocking portion 61, the second blocking portion 62 corresponds to the inner ring portion 33 of the sleeve joint shaft 30, the blocking portion wire groove 63 is formed in the second blocking portion 62, the third blocking portion 64 is connected to the first blocking portion 61, the third blocking portion 64 is located in the section groove 35 of the sleeve joint shaft 30, and the blocking portion flange 65 is protruded and formed at the two ends of the third blocking portion 64.

[0104] The second sheath 422 of the power line 40 is fitted in the large diameter groove, so that the second sheath 422 cannot be axially displaced, and the plurality of core wires 43 of the power line 40 can be prevented from being easily damaged due to pulling. The opening size of each small diameter groove 57 of the lead member 50 is slightly smaller than the outer diameter of the first sheath 421, so that the first sheath 421 of the power line 40 can be prevented from being separated from the lead member 50. The two outer edges 511 of the lead member 50 are accommodated in the recessed hole 351 of the sleeve shaft 30 and are clamped with the inner edge 352, so that the sleeve shaft 30 and the lead member 50 can be effectively fixed and prevented from being axially separated, and the sleeve shaft 30 and the lead member 50 can be conveniently separated by using a tool, so that the assembly and disassembly are convenient. The plurality of core wires 43 can be isolated by the wire blocking member 60, so that the bending parts of the plurality of core wires 43 are reduced and rubbed against the sleeve shaft 30, and the plurality of core wires 43 are prevented from touching some parts of the lead member 50.

[0105] In summary, the hub motor assembly 10 of the present application can prevent the power line 40 from being damaged due to excessive pulling, and can conveniently assemble and disassemble, and can reduce the damage of the power line 40 due to rubbing, so as to achieve the purpose of the present application.

[0106] The above describes the embodiments of the present application. However, these embodiments are only for illustrative purposes, and are not intended to limit the scope of the present application. Although each embodiment is described above, it does not mean that the measures in each embodiment cannot be advantageously combined. The scope of the present application is defined by the appended claims and their equivalents. Without departing from the scope of the present application, those skilled in the art can make various substitutions and modifications, which should fall within the scope of the present application.

Claims

1. A wheel hub motor assembly, characterized by, Comprising: A hub motor having a hub shell, a motor and a circuit board, the hub shell having a first shaft hole at one end, the motor being disposed in the hub shell and having an outer end surface facing the first shaft hole, the circuit board being disposed in the hub shell and being fixed to the outer end surface of the motor; A sleeve shaft being disposed in the first shaft hole of the hub shell and being fixed to the outer end surface of the motor, the sleeve shaft having an outer shaft portion and forming a second shaft hole, a radial groove communicating with the second shaft hole and an inner ring portion protruding radially from a hole wall of the second shaft hole, the inner ring portion having a plurality of core wire holes arranged at intervals; A power line having a plurality of core wires, one end of the plurality of core wires being inserted into the second shaft hole of the sleeve shaft from the radial groove of the sleeve shaft and being inserted into the hub shell through the plurality of core wire holes of the sleeve shaft and being electrically connected to the circuit board; a sheath covering the plurality of core wires, the sheath having a first sheath and a second sheath, the second sheath being connected to the first sheath, the outer diameter of the second sheath being larger than the outer diameter of the first sheath; and A lead member being connected to the sleeve shaft, the lead member having two small-diameter grooves and a large-diameter groove, the large-diameter groove being communicated between the two small-diameter grooves; the first sheath of the power line being fitted in the small-diameter groove, the second sheath of the power line being fitted in the large-diameter groove, the outer diameter of the second sheath being larger than the inner diameter of the small-diameter groove.

2. The hub motor assembly of claim 1, wherein, The sleeve shaft has an inner shaft cylinder, and the lead member has a second cylinder, the inner shaft cylinder of the sleeve shaft and the second cylinder of the lead member being sleeved with each other.

3. The hub motor assembly of claim 1, wherein, The sleeve shaft further has an inner shaft cylinder, the inner shaft cylinder extending from an inner circumferential edge of the inner ring portion along an axial direction of the second shaft hole toward the radial groove; the plurality of core wires are located between the inner shaft cylinder and the outer shaft portion.

4. The hub motor assembly of claim 1, wherein, The sleeve shaft has a first rotation-stopping flat surface formed by an inner edge of the outer shaft portion, and the lead member has a second rotation-stopping flat surface abutting against the first rotation-stopping flat surface of the outer shaft portion.

5. The hub motor assembly of claim 4, wherein, The sleeve shaft has a rotation-stopping recessed portion recessed in the first rotation-stopping flat surface, and the lead member has a rotation-stopping protruding portion formed on the second rotation-stopping flat surface, the rotation-stopping protruding portion of the lead member being accommodated in the rotation-stopping recessed portion of the sleeve shaft.

6. The hub motor assembly of claim 1, wherein, The sleeve shaft has two inner protruding edges formed inwardly from both sides of the radial groove, and the lead member has two outer protruding edges capable of being respectively clamped with each inner protruding edge of the sleeve shaft.

7. The hub motor assembly of claim 6, wherein, The sleeve shaft has two recessed holes recessed away from each other from both sides of the radial groove, and each recessed hole is respectively accommodated with each inner protruding edge of the sleeve shaft.

8. The hub motor assembly of claim 6, wherein, The lead member has two inclined surfaces respectively extended from each outer protruding edge, and the inclined surfaces are used to slide against each inner protruding edge of the sleeve shaft.

9. The hub motor assembly of claim 1, wherein, The lead member has a core separating groove, the core separating groove being communicated with the small-diameter groove, and the core separating groove is suitable for accommodating the plurality of core wires of the power line.

10. The hub motor assembly of claim 1, wherein, The opening size of each small-diameter groove of the lead member is smaller than the outer diameter of the first sheath of the power line.

11. The hub motor assembly of claim 1, wherein, The lead member has a through hole, the through hole being penetrated to the large-diameter groove.

12. The hub motor assembly of claim 1, wherein, Further comprising a wire blocking member, the wire blocking member being fitted on the sleeve shaft, and the lead member separates the sleeve shaft and the power line.

13. The hub motor assembly of claim 12, wherein, The wire blocking member has a first blocking portion located at the inner edge of the outer shaft portion of the sleeve shaft, a second blocking portion connected to the first blocking portion and corresponding to the inner ring portion of the sleeve shaft, and a third blocking portion connected to the first blocking portion and located at the radial groove of the sleeve shaft.

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