Cable connection waterproof sleeve and hub motor outgoing line

Abstract

The utility model provides a cable connection waterproof sleeve and a hub motor outgoing line, comprising a sheath coating part and a plurality of core wire coating parts, one end of a sheath can be coated by the sheath coating part, and a plurality of phase wires extending from the sheath can be respectively coated by the plurality of core wire coating parts. One end of the ventilation gap in the sheath is located in the protection cavity, and external water cannot flow into the ventilation gap along the phase line, thereby realizing waterproof protection. Furthermore, the sheath wrapping part is provided with an elastic channel forming part, so that a ventilation channel can be formed between the channel forming part and the sheath by utilizing the hardness and the form of the elastic channel forming part and the signal line, one end of the ventilation channel is communicated with a ventilation gap in the sheath through a protection cavity, and the other end of the ventilation channel is communicated with the outside. While waterproof protection is realized, air exchange between the inside and the outside of the hub motor can be ensured through the air exchange gap, the protection cavity and the air exchange channel which are communicated in sequence, so that self-adaptive adjustment of air pressure inside the hub motor is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable connection components, and in particular relates to a cable connection waterproof sleeve and a hub motor lead-out line. Background Art

[0002] In electric vehicles, wheel hub motors are commonly used as power devices. In order to realize the power supply and control of wheel hub motors, corresponding lead wires are usually used to connect the motor winding inside the wheel hub motor with the external controller. The lead wires usually include three phase wires, multiple signal wires, and a sheath covering the outer layer of the phase wires and signal wires. The wheel hub motor may work in scenes such as rain, and it is necessary to prevent external water from entering the wheel hub motor; and when the wheel hub motor is working, the air inside it will expand and contract due to the influence of the ambient temperature and the temperature generated by its own operation, and it is also necessary to prevent the internal air pressure of the wheel hub motor from being too high or too low to affect its normal operation. To achieve the above purpose, the following structural design is generally adopted at present: the wheel hub motor itself adopts a waterproof sealing structure, and a ventilation gap is left in the sheath of the lead wire, between multiple phase wires and signal wires. One end of the ventilation gap is connected to the inside of the wheel hub motor, and the other end is connected to the outside, so that the wheel hub motor can discharge air when heated and inhale air from the outside when cooled, so as to achieve its internal air pressure regulation.

[0003] In such a structure, although the hub motor itself is waterproof and sealed, when the hub motor inhales air from the outside, negative pressure is generated in the ventilation gap inside the sheath. If water droplets splash onto the phase line at this time, the water droplets will enter the hub motor through the ventilation gap under the action of negative pressure, causing the hub motor to enter water and malfunction.

[0004] Therefore, in order to solve the above problems, there is a need for a new lead wire structure that can effectively shield the ventilation gap to achieve a waterproof effect and does not affect the ventilation between the hub motor and the outside. Utility Model Content

[0005] The utility model is designed to solve the above problems, and aims to provide a cable connection waterproof cover that can prevent water from entering the inside of the hub motor along the ventilation gap in the cover and can ensure ventilation between the hub motor and the outside, and a hub motor lead wire including the cable connection waterproof cover. The utility model adopts the following technical solutions:

[0006] The utility model provides a cable connection waterproof cover, which is arranged at one end of the sheath of the cable, and the cable also has multiple phase lines and at least one signal line extending from one end of the sheath, and has such technical characteristics that the cable connection waterproof cover comprises: a sheath covering portion, which has a protective cavity, used to cover one end of the sheath; and multiple core wire covering portions, which are respectively arranged at one end of the sheath covering portion and have threading holes connected to the protective cavity, and are respectively used to cover the multiple phase lines, wherein the sheath covering portion has an elastic channel forming portion, which is used to cooperate with the signal line to form a ventilation channel between the channel-shaped portion and the sheath, and one end of the ventilation channel is connected to the protective cavity, and the other end is connected to the outside.

[0007] The cable connection waterproof cover provided by the utility model may also have such a technical feature, wherein the side wall of the sheath covering portion is cylindrical, and the end of the side wall away from the core wire covering portion has a notch, and along the axial direction of the sheath covering portion, the channel forming part is located on one side of the notch.

[0008] The cable connection waterproof cover provided by the utility model may also have such technical features, wherein the notch is rectangular, the corners of the notch are rounded, the length direction of the notch is the axial direction of the sheath covering part, and the length of the notch is 1 / 3 to 1 / 2 of the axial length of the sheath covering part.

[0009] The cable connection waterproof sleeve provided by the utility model may also have such a technical feature, wherein the cable connection waterproof sleeve is a silicone rubber sleeve, and the sheath covering portion and the multiple core wire covering portions are formed integrally.

[0010] The cable connection waterproof cover provided by the utility model may also have such a technical feature, wherein the sheath covering part and the sheath have an interference fit, and the core wire covering part and the corresponding phase wire have an interference fit.

[0011] The cable connection waterproof cover provided by the utility model may also have such a technical feature, wherein the side wall of the sheath covering portion is cylindrical, the core wire covering portion is cylindrical, and the thickness of the core wire covering portion is greater than the thickness of the side wall of the sheath covering portion.

[0012] The cable connection waterproof cover provided by the utility model may also have such a technical feature, wherein the two ends of the threading hole respectively have an entry opening connected to the protection cavity and an exit opening connected to the outside, and the edges of the entry opening have rounded corners.

[0013] The cable connection waterproof cover provided by the utility model may also have such technical features, wherein a gap is left between two adjacent core wire covering parts, a reinforcement part is provided at the connection position between the core wire covering part and the sheath covering part, and the edge part of the sheath covering part has a plurality of support parts protruding outward along the axis of the sheath covering part, and the plurality of support parts are respectively located beside each of the core wire covering parts.

[0014] The utility model provides a hub motor lead wire, which has the following technical features: the hub motor lead wire comprises: a cable having a sheath, a plurality of phase wires extending from one end of the sheath, and at least one signal wire; and the cable connection waterproof cover, which is arranged at one end of the sheath.

[0015] The hub motor lead wire provided by the utility model may also have such a technical feature, wherein the signal line has a bending portion and an extension portion connected to the bending portion, the bending portion is arranged in the protective cavity, the extension portion is arranged between the channel forming portion and the sheath, and the extension direction of the extension portion is inclined relative to the axial direction of one end of the sheath, so that the ventilation channel is formed between the channel-shaped portion and the sheath.

[0016] Function and effect of utility model

[0017] According to the cable connection waterproof cover and the hub motor lead-out line of the utility model, the cable connection waterproof cover includes a cover sheath and a plurality of core wire cover parts connected thereto, and the cover sheath can cover one end of the cover sheath, and the plurality of core wire cover parts can cover the plurality of phase wires extending from the cover sheath respectively, so that one end of the ventilation gap between the core wires in the cover sheath is located in the protection cavity, and the external water cannot flow into the ventilation gap along the phase line and then enter the inside of the hub motor, thereby achieving waterproof protection. Further, since the cover sheath has an elastic channel forming part, the hardness and shape of the channel forming part and the signal line can be used to form a ventilation channel between the channel forming part and the outer surface of the cover sheath, and one end of the ventilation channel is connected to the ventilation gap in the cover sheath through the protection cavity, and the other end is connected to the outside. Therefore, while achieving waterproof protection, the ventilation between the inside and outside of the hub motor can be guaranteed by the ventilation gap, the protection cavity and the ventilation channel connected in sequence, so as to achieve adaptive adjustment of the internal air pressure of the hub motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side view of the lead wire of the hub motor in the embodiment of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of a cable connection waterproof cover in an embodiment of the utility model;

[0020] Figure 3 It is an orthographic projection diagram of one end of the cable connected to the waterproof cover in the embodiment of the utility model;

[0021] Figure 4 This is a cross-sectional view of the cable connection waterproof cover in the embodiment of the utility model. Figure 1 ;

[0022] Figure 5 This is a cross-sectional view of the cable connection waterproof cover in the embodiment of the utility model. Figure 2 ;

[0023] Figure 6 It is a cross-sectional schematic diagram of the cable connection waterproof cover in the embodiment of the utility model in use.

[0024] Reference numerals:

[0025] Hub motor lead wire 10; cable 11; sheath 111; core wire 112; controller connection end 11b; phase line 112; signal line 113; bending part 1131; extension part 1132; ventilation gap 114; cable connection waterproof cover 15; sheath covering part 151; protection cavity 1511; notch 1512; channel forming part 1513; ventilation channel 1513a; connection end 1515; support part 15151; core wire covering part 152; threading hole 1521; insertion opening 1521a; exit opening 1521b; reinforcement part 1522. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the cable connection waterproof sleeve and the hub motor lead wire of the present invention are specifically described below in combination with embodiments and drawings.

[0027] <Example>

[0028] Figure 1 It is a side view of the lead wires of the hub motor in this embodiment.

[0029] like Figure 1 As shown, the hub motor lead wire 10 includes a cable 11 and a cable connection waterproof cover 15 .

[0030] One end of the cable 11 is a winding connection end (not shown in the figure), which passes through the wire hole on the motor shaft of the hub motor and penetrates into the hub motor to connect to the internal motor winding. The other end of the cable 11 is a controller connection end 11b, which is used to connect to an external controller. The cable 11 includes a sheath 111 and a plurality of core wires, which are arranged in close proximity to each other. The sheath 111 is coated on the outer layer of all these core wires to provide insulation, waterproofing, and protection against core wire wear. A certain gap is left inside the sheath 111 and between the plurality of core wires. The gap is connected along the extension direction of the cable 11 and is connected to the inside of the hub motor. The hub motor can exchange air with the outside through the gap to adjust the air pressure inside it. For the convenience of description below, the gap is recorded as a ventilation gap.

[0031] In this embodiment, the multiple core wires include three phase wires 112 with the same diameter and four signal wires 113 with the same diameter, wherein the outer diameter of the phase wire 112 is relatively thick, and the outer diameter of the signal wire 113 is much smaller than the outer diameter of the phase wire 112. Both the phase wire 112 and the signal wire 113 include one or more wires inside and an insulating layer wrapped around the outer layer of the wire, and the insulating layer has a certain elasticity and hardness. The insulating layers of the three phase wires 112 are respectively of different colors, and the insulating layers of the four signal wires 113 are also respectively of different colors.

[0032] At the controller connection end 11b of the cable 11, a section of the sheath 111 needs to be removed to expose the core wire, and the three phase wires 112 and the four signal wires 113 are separated from each other and connected to the corresponding terminals of the controller, which will cause one end of the ventilation gap between the core wires to be exposed. The cable connection waterproof cover 15 is installed on the controller connection end 11b to shield one end of the ventilation gap, thereby achieving a waterproof effect on the controller connection end 11b.

[0033] Figure 2 is a stereoscopic diagram of the cable connection waterproof cover in this embodiment, Figure 3 is an orthographic projection diagram of one end of the cable connected to the waterproof cover in this embodiment. Figure 4 and Figure 5 They are respectively the cross-sectional views of the cable connection waterproof cover in this embodiment. Figure 1 and two .

[0034] like Figures 2 to 5 As shown, the cable connection waterproof cover 15 is made of silicone rubber, and includes an integrally formed sheath covering portion 151 and a plurality of core wire covering portions 152. In this embodiment, there are three core wire covering portions 152, which are used to cover three phase wires 112 respectively.

[0035] The sheath covering portion 151 is used to cover the outside of one end of the sheath 111. The side wall of the sheath covering portion 151 is cylindrical. A protective cavity 1511 is formed inside the sheath covering portion 151. When not subjected to external force, the inner diameter d1 of the protective cavity 1511 is slightly larger than the outer diameter of the sheath 111. Therefore, there can be a certain gap between the sheath covering portion 151 and the sheath 111 to facilitate ventilation.

[0036] A roughly rectangular notch 1512 is provided on the side wall of the sheath covering portion 151 at one end away from the core wire covering portion 152. The corners of the notch 1512 are rounded to prevent the corners from cracking due to stress concentration. The length l1 of the notch 1512 is approximately 1 / 3 to 1 / 2 of the axial length of the sheath covering portion 151, and the width w1 of the notch 1512 is approximately 1 / 2 of the outer diameter of the sheath covering portion 151. The portion of the sheath covering portion 151 on one side of the length direction of the notch 1512 is a channel forming portion 1513. Since the length of the channel forming portion 1513 (the length along the axial direction of the sheath covering portion 151) is smaller than the length of other portions of the sheath covering portion 151, it is more susceptible to deformation than other portions.

[0037] One axial end of the sheath covering portion 151 is a circular opening, and the other end is a connecting end 1515. The connecting end 1515 can be roughly regarded as a circular plate. Three circular through holes are opened on the connecting end 1515, and the centers of the three through holes and the connecting lines thereof form an equilateral triangle.

[0038] The three core wire covering parts 152 extend from the edges of the three through holes to the outside of the sheath covering part 151, respectively, and their extension direction is basically consistent with the axial direction of the sheath covering part 151. Their extension length is about 1 / 4 to 1 / 3 of the axial length of the sheath covering part 151, and a certain gap is left between two adjacent core wire covering parts 152. Each core wire covering part 152 is roughly cylindrical, and from the cross section of the core wire covering part 152 in the circumferential direction, the outer edge of its outer end is rounded, and the outer edge of the connection position with the sheath covering part 151 is also rounded, so that a reinforcement part 1522 is formed at the connection position.

[0039] The core wire sheathing portion 152 has a threading hole 1521 that penetrates along its axial direction. One end of the threading hole 1521 is connected to the protection cavity 1511 and has an entry opening 1521a. The other end of the threading hole 1521 is connected to the outside and has an exit opening 1521b. From the cross section of the core wire sheathing portion 152 in the circumferential direction, the edge of the entry opening 1521a is rounded, and the edge of the exit opening 1521b is right-angled, so that it is easy to insert the phase line 112 from the entry opening 1521a.

[0040] When not subject to external force, the inner diameter d2 of the threading hole 1521 is slightly smaller than the outer diameter of the phase line 112, so the core wire sheath 152 can be tightly wrapped on the outer surface of the phase line 112. At the same time, the thickness th2 of the core wire sheath 152 and its material enable it to generate sufficient radial pressure on the phase line 112, and can effectively prevent water in long-term use. In addition, the thickness th2 of the core wire sheath 152 is substantially the same as the thickness th1 of the side wall of the sheath sheath 151.

[0041] From the cross section of the connection end 1515 in the circumferential direction, the edge of the connection end 1515 is rounded, and the edge of the connection end 1515 closest to each core wire covering portion 152 slightly protrudes outward along the axial direction of the sheath covering portion 151, and a support portion 15151 is formed at this position to support the connection end of the core wire covering portion 152. Since one side of the core wire covering portion 152 is very close to the edge of the connection end 1515, when it is deformed by force (for example, it is bent by the force from the phase line 112), the connection end of the core wire covering portion 152 on this side is relatively more prone to cracks, so the support portion 15151 is provided to solve this problem.

[0042] In this embodiment, the thickness th1 of the side wall of the sheath covering portion 151 is 1 mm, the axial length of the sheath covering portion 151 is 25 mm to 30 mm, the length l3 of the notch 1515 is 8 mm to 10 mm, the width w1 of the notch 1515 is 5 mm to 7 mm, and the inner diameter d6 of the protective cavity 1511 is about 3 mm larger than the outer diameter of the cable 11. The thickness th2 of the core wire covering portion 152 is 1 mm, the inner diameter d7 of the threading hole 1521 is about 0.7 mm to 1 mm smaller than the outer diameter of 112, and the length l4 of the threading hole 1521 is 5 mm to 7 mm.

[0043] Figure 6 It is a cross-sectional schematic diagram of the cable connection waterproof cover in the present embodiment in use.

[0044] like Figure 6As shown, when in use, the three phase wires 112 exposed from one end of the sheath 111 are respectively inserted into the three core wire sheathing parts 152, and the one end of the sheath 111 is inserted into the protective cavity 1511 of the sheath sheathing part 151. The parts of the plurality of signal wires 113 outside one end of the sheath 111 are bent, and the bent part 1131 of the signal wire 113 is arranged in the protective cavity 1511, and one end of the signal wire 113 extends from the protective cavity 1511 through the notch 1512 to the outside of the sheath sheathing part 151, and a section of the extension part 1132 of the signal wire 113 connected to the bent part 1131 is arranged between the channel forming part 1513 and the outer surface of the sheath 111. Since the signal line 113 has a certain hardness and there are multiple signal lines 113 , the multiple bent signal lines 113 prop up the channel forming part 1513 , forming a smaller ventilation channel 1513 a between the channel forming part 1513 and the outer surface of the sheath 111 .

[0045] One end of the ventilation channel 1513a is connected to the protective cavity 1511, that is, connected to the ventilation gap 114 between the core wires, and the other end of the ventilation channel 1513a is connected to the outside. The extension direction of the ventilation channel 1513a is roughly the extension direction of a section of the signal line 113 at the end close to the sheath 111, and the angle between the extension direction and the axial direction of the end of the sheath 111 (that is, the extension direction of the ventilation gap at the end) is an acute angle. The cross-section of the ventilation channel 1513a along its extension direction is roughly crescent-shaped, and the cross-sectional size of the ventilation channel 1513a gradually increases from the end of the ventilation channel 1513a connected to the protective cavity 1511 to the end of the ventilation channel 1513a connected to the outside.

[0046] When the temperature inside the wheel hub motor rises, the air inside the wheel hub motor expands due to the heat, so that positive pressure is generated in the ventilation gap. At this time, the air inside the wheel hub motor can be discharged to the outside through the ventilation gap 114, the protection cavity 1511, and the ventilation channel 1513a in sequence. At the same time, since each phase line 112 is tightly wrapped by the corresponding core wire sheath 152, external water cannot flow into the ventilation gap 114 along the phase line 112. Since the air is being discharged to the outside through the ventilation channel 1513a at this time, external water cannot enter the inside of the wheel hub motor from the ventilation channel 1513a.

[0047] Afterwards, when the inside of the hub motor is cooled, the air inside the hub motor contracts due to the cold, so that negative pressure is generated in the ventilation gap 114. At this time, the external air can enter the inside of the hub motor through the ventilation channel 1513a, the protective cavity 1511, and the ventilation gap 114 in sequence under the action of negative pressure. At the same time, since each phase line 112 is tightly wrapped by the corresponding core wire sheath 152, external water cannot flow into the ventilation gap 114 along the phase line 112. In addition, since the inner diameter of one end of the ventilation channel 1513a is very small, and the angle between the extension direction of the ventilation channel 1513a and the extension direction of the ventilation gap 114 near the waterproof cover 15 is a small acute angle, therefore, at this time, external water can basically not enter the inside of the hub motor from the ventilation channel 1513a.

[0048] Functions and Effects of the Embodiments

[0049] According to the cable connection waterproof cover and the hub motor lead-out line provided in this embodiment, the cable connection waterproof cover includes a cover sheath and a plurality of core wire cover parts connected thereto, and the cover sheath can cover one end of the cover sheath, and the plurality of core wire cover parts can cover the plurality of phase wires extending from the cover sheath respectively, so that one end of the ventilation gap between the core wires in the cover sheath is located in the protection cavity, and the external water cannot flow into the ventilation gap along the phase line and then enter the inside of the hub motor, thereby achieving waterproof protection. Further, since the cover sheath has an elastic channel forming part, the hardness and shape of the channel forming part and the signal line can be used to form a ventilation channel between the channel forming part and the outer surface of the cover sheath, and one end of the ventilation channel is connected to the ventilation gap in the cover sheath through the protection cavity, and the other end is connected to the outside. Therefore, while achieving waterproof protection, the ventilation between the inside and outside of the hub motor can be guaranteed by the ventilation gap, the protection cavity and the ventilation channel connected in sequence, so as to achieve adaptive adjustment of the internal air pressure of the hub motor.

[0050] In the embodiment, the side wall of the sheath covering portion is cylindrical and has a notch, and a channel forming portion with a relatively shorter axial length and easier to deform is formed on one side of the notch. The signal line extending from one end of the sheath is simply bent, the bent portion is arranged in the protective cavity of the sheath covering portion, and the extended portion is led out from the notch. The structure and hardness of the signal line and the elasticity of the channel forming portion can be utilized to form a ventilation channel between the channel forming portion and the outer surface of the sheath. Therefore, the cable connection waterproof cover is easy to assemble, and no specific tools are required during assembly. In addition, since the signal line and the elasticity of the material itself are cleverly utilized, the structure of the cable connection waterproof cover is simple and easy to manufacture.

[0051] Furthermore, the notch is rectangular and therefore easy to process, and the length of the notch is 1 / 3 to 1 / 2 of the axial length of the sheath covering portion, which is relatively small, so the notch will not affect the tightening effect of the sheath covering portion on the sheath. In addition, the corners of the notch are rounded, which can avoid problems such as cracking at the corners due to stress concentration, thereby making the cable connection to the waterproof cover more reliable.

[0052] Furthermore, the cable connection waterproof cover is a silicone rubber cover, and the sheath covering parts have an interference fit with each other, and the core wire covering part has an interference fit with the corresponding phase wire. Therefore, the waterproof effect can be effectively achieved, and the problem of deterioration of the waterproof effect is not likely to occur under the conditions of ambient temperature changes, long-term use, etc.

[0053] Furthermore, the edge of the insertion opening of the threading hole of the core wire sheath has a rounded corner, which can play a guiding role when the phase wire is inserted from the insertion opening, making it easier for the phase wire to be inserted.

[0054] Furthermore, a gap is left between two adjacent core wire sheaths, and the core wire sheaths can bend slightly as the corresponding phase wire bends, which can avoid excessive stress on one side of the covered part of the phase wire due to its inability to bend, thereby preventing surface defects. In addition, a reinforcement portion is provided at the connection position between the core wire sheath and the sheath sheath, and a support portion is provided at the outer edge of the connection position, so that even when the core wire sheath is deformed as the phase wire is bent, no cracks will appear at the connection position between the core wire sheath and the sheath sheath. In this way, when one end of the hub motor lead wire is connected to the controller, there are fewer restrictions on the wiring of multiple phase wires.

[0055] The above embodiments are only used to illustrate the specific implementation of the utility model, and the utility model is not limited to the description scope of the above embodiments. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

[0056] For example, in the above embodiment, there are three phase lines and four signal lines. In an alternative solution, there may be five phase lines, for example. Accordingly, the cable connection waterproof cover has five core wire covering parts, which can also achieve the corresponding technical effect; the number of signal lines can also be less or more.

[0057] In the above embodiment, the side wall of the sheath covering portion has a notch for forming a channel forming portion, and the notch is a rectangular notch with rounded corners. In an alternative, the notch may also be other shapes, such as a trapezoidal notch with rounded corners.

[0058] In the above embodiment, the three phase wires have the same outer diameter, and therefore the three core wire covering portions have the same size. In an alternative embodiment, based on the actual sizes of the multiple core wires, the inner diameters and / or axial lengths of the multiple core wire covering portions may also be set to be different to match each core wire respectively.

Claims

1. A cable connection waterproof cover, arranged at one end of a cable sheath, the cable also having a plurality of phase lines and at least one signal line extending from one end of the sheath, characterized in that: include: A sheath covering portion, having a protection cavity, for covering one end of the sheath; as well as A plurality of core wire covering parts are respectively arranged at one end of the sheath covering part and have threading holes connected to the protection cavity, and are respectively used to cover the plurality of phase wires. The sheath covering portion has an elastic channel forming portion, which is used to cooperate with the signal line to form a ventilation channel between the channel-shaped portion and the sheath. One end of the ventilation channel is communicated with the protection cavity, and the other end is communicated with the outside.

2. The cable connection waterproof cover according to claim 1, characterized in that: in, The side wall of the sheath covering portion is cylindrical, and one end of the side wall away from the core wire covering portion has a notch. Along the axial direction of the sheath covering portion, the channel forming portion is located on one side of the notch.

3. The cable connection waterproof cover according to claim 2, characterized in that: in, The notch is rectangular, and the corners of the notch are rounded. The length direction of the notch is the axial direction of the sheath covering portion, The length of the notch is 1 / 3 to 1 / 2 of the axial length of the sheath covering portion.

4. The cable connection waterproof cover according to claim 1, characterized in that: in, The cable connection waterproof sleeve is a silicone rubber sleeve. The sheath covering portion is formed integrally with the plurality of core wire covering portions.

5. The cable connection waterproof cover according to claim 4, characterized in that: in, The core wire covering portion is interference fit with the corresponding phase wire.

6. The cable connection waterproof cover according to claim 4 or 5, characterized in that: in, The side wall of the sheath covering portion is cylindrical, The core wire covering portion is cylindrical, and the thickness of the core wire covering portion is greater than the thickness of the side wall of the sheath covering portion.

7. The cable connection waterproof cover according to claim 4 or 5, characterized in that: in, The two ends of the threading hole respectively have an entry opening communicating with the protection cavity and an exit opening communicating with the outside. The edges of the penetration opening have rounded corners.

8. The cable connection waterproof cover according to claim 4 or 5, characterized in that: in, A gap is left between two adjacent core wire covering parts. A reinforcement portion is provided at the connection position between the core wire covering portion and the sheath covering portion. The edge portion of the sheath covering portion has a plurality of support portions protruding outwardly along the axial direction of the sheath covering portion, and the plurality of support portions are respectively located beside each of the core wire covering portions.

9. A hub motor lead wire, characterized in that: include: A cable having a sheath, a plurality of phase wires extending from one end of the sheath, and at least one signal wire; as well as The cable connection waterproof cover is arranged at one end of the cover. Wherein, the cable connection waterproof cover is the cable connection waterproof cover as described in any one of claims 1-8.

10. The hub motor lead wire according to claim 9, characterized in that: in, The signal line has a bent portion and an extended portion connected to the bent portion, The bent portion is arranged in the protective cavity, The extending portion is disposed between the channel forming portion and the sheath, and an extending direction of the extending portion is inclined relative to an axial direction of one end of the sheath, so that the ventilation channel is formed between the channel forming portion and the sheath.

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