Cable assembly, electric appliance and vehicle

Abstract

The utility model discloses a cable assembly, an electric appliance and a vehicle. The cable assembly comprises a first cable, a second cable, an insulating part and an inner pipe body. One end of the second cable is connected with one end of the first cable to form a connection section; the connecting section is located in the inner pipe body, a rotation stopping part is arranged on the inner surface of the inner pipe body, and the rotation stopping part is matched with the connecting section in a rotation stopping mode. One end of the second cable is connected with one end of the first cable to form the connecting section, on one hand, compared with bolt connection in the related technology, the welding mode is simple and convenient, the assembly time is greatly shortened, and the assembly cost is reduced; and on the other hand, a good joint form is achieved, namely the connecting strength of the connecting sections is high. The rotation stopping part is matched with the connecting section in a rotation stopping mode, the freedom degree of the connecting section is limited and restrained, and rotation of the connecting section is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cable connection, in particular to a cable assembly, an electrical appliance and a vehicle. Background Art

[0002] In order to achieve lightweight and cost reduction, some new energy vehicle models need to use two types of cable harnesses simultaneously, such as copper cables and aluminum cables.

[0003] In the copper-aluminum cable connection method in the related art, usually, the copper cable and the aluminum cable are indirectly connected through a connecting piece with a specific structure, and the copper cable and the aluminum cable are indirectly connected through the connecting piece.

[0004] The above-mentioned method of indirectly connecting the copper cable and the aluminum cable through the connecting piece is cumbersome in assembly and long in assembly time, resulting in a relatively high assembly cost. Content of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a cable assembly, an electrical appliance and a vehicle, the welding method is simple and convenient, the assembly time is greatly shortened, and the assembly cost is reduced.

[0006] The cable assembly according to the embodiment of the first aspect of the utility model includes: a first cable, a second cable and an inner tube body.

[0007] One end of the second cable is connected to one end of the first cable to form a connection section; the connection section is located inside the inner tube body, and an anti-rotation portion is provided on the inner surface of the inner tube body, and the anti-rotation portion is in anti-rotation cooperation with the connection section.

[0008] In this embodiment, one end of the second cable is connected to one end of the first cable to form a connection section. On the one hand, compared with the bolt connection in the related art, the welding method is simple and convenient, the assembly time is greatly shortened, and the assembly cost is reduced; on the other hand, the high-frequency and high-pressure ultrasonic vibration can provide the internal energy required to melt the copper and aluminum materials, and can re-solidify at the copper-aluminum cable joint interface to form a stable copper-aluminum transition alloy, with a good joint form, that is, the connection strength of the connection section is high, so that the first cable and the second cable are stably connected together. The anti-rotation portion is in anti-rotation cooperation with the ultrasonic connection section, restricting and constraining the freedom degree of the connection section, avoiding the self-rotation of the connection section, and eliminating the risk of damage caused by mechanical pulling stress generated by the rotation of the connection section to the first cable and the second cable.

[0009] According to some embodiments of the utility model, the connection section includes a first plane and a second plane arranged opposite to each other, and at least one of the first plane and the second plane is in surface contact and cooperation with the anti-rotation portion, or,

[0010] At least one of the first plane and the second plane is in abutting cooperation with the anti-rotation portion to prevent the connecting section from rotating self.

[0011] According to some embodiments of the present invention, the anti-rotation portion includes a stop projection provided on the inner wall of the inner tube body, and the stop projection is in abutting cooperation with at least one of the first plane and the second plane, or,

[0012] The anti-rotation portion includes a stop groove provided on the inner wall of the inner tube body, the connecting section is located in the stop groove, and at least one of the first plane and the second plane abuts against the groove wall of the stop groove.

[0013] According to some embodiments of the present invention, the inner tube body is circumferentially divided into N parts, N≥2, N is a positive integer, and any two adjacent ones of the N parts are in snap-fit or insertion-fit.

[0014] According to some embodiments of the present invention, it further includes an outer tube body, the inner tube body is disposed inside the outer tube body, and the inner tube body is fixedly connected to the outer tube body.

[0015] According to some embodiments of the present invention, the outer tube body is sleeved on the inner tube body, a snap groove is provided on one of the inner surface of the outer tube body and the outer surface of the inner tube body, and an elastic snap is provided on the other, and the elastic snap is in snap-fit with the snap groove.

[0016] According to some embodiments of the present invention, the snap groove and a positioning projection are provided on the inner surface of the outer tube body, the positioning projection and the snap groove are arranged at intervals along the axis direction of the outer tube body, the outer tube body is sleeved on the inner tube body along the direction from the snap groove to the positioning projection, and the inner tube body abuts against the positioning projection.

[0017] According to some embodiments of the present invention, a fixing portion is provided on the outer surface of the outer tube body.

[0018] According to some embodiments of the present invention, it further includes a first sealing ring, a second sealing ring, a first cover plate, and a second cover plate.

[0019] The first cover plate is detachably installed at one end of the outer tube body, the first cable passes through the first cover plate, the second cover plate is detachably installed at the other end of the outer tube body, and the second cable passes through the second cover plate. A first sealing ring installation portion is provided on the inner surface of one end of the outer tube body, and a second sealing ring installation portion is provided on the inner surface of the other end.

[0020] The first sealing ring is sleeved on the first cable and is located inside the outer tube body, and the first sealing ring is clamped between the first sealing ring mounting portion and the first cover plate; the second sealing ring is sleeved on the second cable and is located inside the outer tube body, and the second sealing ring is clamped between the second sealing ring mounting portion and the second cover plate.

[0021] According to some embodiments of the present invention, it further includes M outer tube bodies, where M≥2 and M is an integer. The M outer tube bodies are coaxially arranged along the radial direction of the inner tube body. The inner tube body is arranged in the innermost one of the M outer tube bodies and the two are fixedly connected.

[0022] According to some embodiments of the present invention, it further includes an insulating member, and the insulating member covers the connecting section.

[0023] According to some embodiments of the present invention, a filling member is provided between the insulating member and the connecting section, and the filling member fills the gap between the insulating member and the connecting section.

[0024] An electrical appliance according to an embodiment of the second aspect of the present invention includes the cable assembly in the first aspect.

[0025] A vehicle according to an embodiment of the third aspect of the present invention includes the electrical appliance in the second aspect.

[0026] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0027] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0028] Figure 1 is a schematic structural diagram of a cable assembly according to an embodiment of the present invention;

[0029] Figure 2 is an exploded schematic diagram of a cable assembly according to an embodiment of the present invention;

[0030] Figure 3 is a schematic cross-sectional view of a cable assembly according to an embodiment of the present invention Figure 1 ;

[0031] Figure 4 is a schematic connection diagram between an outer tube body and an inner tube body according to an embodiment of the present invention;

[0032] Figure 5 is Figure 4 a partially enlarged schematic diagram of D;

[0033] Figure 6 is a cross-sectional schematic view of a cable assembly according to an embodiment of the present utility model Figure 2 ;

[0034] Figure 7 is a schematic connection diagram of a first cable and a second cable according to an embodiment of the present utility model;

[0035] Figure 8 is a schematic connection diagram of a first cable, a second cable, and a hot melt adhesive film according to an embodiment of the present utility model;

[0036] Figure 9 is a schematic connection diagram of a first cable, a second cable, a hot melt adhesive film, and a heat shrinkable tube according to an embodiment of the present utility model;

[0037] Reference numerals:

[0038] first cable 10, first end to be welded 11, second cable 20, second end to be welded 21;

[0039] insulating member 30, filling member 40;

[0040] inner tube body 50, upper arc-shaped shell 51, first buckle 511, first stop protrusion 512, lower arc-shaped shell 52, first card slot 521, second stop protrusion 522, elastic buckle 523;

[0041] outer tube body 60, second buckle 61, fixing portion 62, buckle slot 63, positioning protrusion 64, first sealing ring mounting portion 65, second sealing ring mounting portion 66;

[0042] first cover plate 71, second card slot 711, second cover plate 72, third card slot 721;

[0043] first sealing ring 81, second sealing ring 82. Detailed implementation manners

[0044] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0045] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the applicability of other processes and / or the use of other materials.

[0046] As Figures 1 - 9 shown, a cable assembly according to an embodiment of the first aspect of the present utility model includes: a first cable 10, a second cable 20, and an inner tube 50.

[0047] One end of the second cable 20 is connected to one end of the first cable 10 to form a connection section. The connection section is located inside the inner tube 50, and an anti-rotation portion is provided on the inner surface of the inner tube 50, and the anti-rotation portion is in anti-rotation cooperation with the connection section.

[0048] It should be noted that, as Figure 7 shown, a first end to be welded 11 of the first cable 10 and a second end to be welded 21 of the second cable 20 are welded to form a connection section. The welding method can be ultrasonic welding, soldering, etc.

[0049] In practical applications, the first cable 10 can be a copper cable, and the copper cable can include a shielding layer; the second cable 20 can be an aluminum cable, and the aluminum cable can include a shielding layer. The first end to be welded 11 of the copper cable and the second end to be welded 21 of the aluminum cable overlap, and an ultrasonic connection section is formed by ultrasonic welding. With this arrangement, on the one hand, compared with the bolt connection in the related art, the welding method is simple and convenient, greatly shortening the assembly time and helping to reduce the assembly cost; on the other hand, the high-frequency and high-pressure ultrasonic vibration can provide the internal energy required to melt the copper and aluminum materials, and can re-solidify at the joint interface of the copper-aluminum cable to form a stable copper-aluminum transition alloy, having a good joint form, that is, the connection strength of the connection section is high, so that the first cable 10 and the second cable 20 are stably connected together.

[0050] Considering the reason of the metal activity of copper and aluminum materials, there is a potential difference, and when air and water enter, it is easy to induce the formation of a primary battery between copper and aluminum, resulting in electrochemical corrosion.

[0051] Based on this, as Figure 9 shown, an insulating member 30 is provided. The insulating member 30 can be an insulating layer, and the insulating layer covers the overlapping first end to be welded 11 and second end to be welded 21 to isolate air and water from entering the overlapping interface between the two, preventing electrochemical corrosion and effectively solving the problem of the copper-aluminum potential difference.

[0052] At the current moment, ultrasonic welding is used for the overlapped first end to be welded 11 and the second end to be welded 21, thereby forming an ultrasonic connection section. The welding process has a welding width of 18 mm to 22 mm and a welding length of 18 mm to 24 mm. In this way, the welding strength is adapted to a 95-square cable, and the pull-off force can meet the requirement of ≥3000 N.

[0053] In addition, an anti-rotation portion is provided on the inner surface of the inner tube body 50. The anti-rotation portion is in anti-rotation cooperation with the ultrasonic connection section to limit and constrain the degree of freedom of the connection section, avoid the self-rotation of the connection section, and eliminate the risk of damage caused by the mechanical pulling stress generated by the rotation of the connection section to the first cable 10 and the second cable 20.

[0054] To sum up, one end of the second cable 20 is welded to one end of the first cable 10 to form a connection section. On the one hand, compared with the bolt connection in the related technology, the welding method is simple and convenient, greatly shortening the assembly time and helping to reduce the assembly cost. On the other hand, the high-frequency and high-pressure ultrasonic vibration can provide the internal energy to meet the melting of copper and aluminum materials, and can re-solidify at the copper-aluminum cable joint interface to form a stable copper-aluminum transition alloy, having a good joint form, that is, the connection strength of the connection section is high, so that the first cable 10 and the second cable 20 are stably connected together. The insulating member covers the connection section to isolate air and water from entering the overlapping interface of the two, preventing electrochemical corrosion and effectively solving the problem of copper-aluminum potential difference. The anti-rotation portion is in anti-rotation cooperation with the ultrasonic connection section to limit and constrain the degree of freedom of the connection section, avoid the self-rotation of the connection section, and eliminate the risk of damage caused by the mechanical pulling stress generated by the rotation of the connection section to the first cable 10 and the second cable 20.

[0055] In some embodiments of the present invention, a filling member 40 is provided between the insulating member 30 and the connection section. The filling member 40 has a solid state and a liquid state, and the filling member 40 in the liquid state fills the gap between the insulating member 30 and the connection section.

[0056] It should be noted that the insulating member 30 may include insulating paint, silicone resin, heat shrinkable tube,....

[0057] In practical applications, the insulating member 30 is a heat shrinkable tube, and the heat shrinkable tube is sleeved on the overlapped first end to be welded 11 and the second end to be welded 21.

[0058] Furthermore, a filling member 40 is provided between the heat shrinkable tube and the connection section. The filling member 40 has a solid state and a liquid state, and the filling member 40 in the liquid state fills the gap between the insulating member 30 and the connection section. In this way, the liquid filling member 40 can fill the tiny gaps between the overlapped first end to be welded 11 and the second end to be welded 21, further preventing electrochemical corrosion.

[0059] For example, as Figures 7 - 9As shown, the filling member 40 can be a hot melt adhesive film. The hot melt adhesive film winds around and overlaps the first end to be welded 11 and the second end to be welded 21. The heat shrinkable tube is coated on the hot melt adhesive film. Among them, the hot melt temperature of the hot melt adhesive film is between 250°C and 300°C, and the thickness is between 0.6 mm and 0.8 mm. At the current moment, the heat gun bakes the heat shrinkable tube, and the adhesive-coated heat shrinkable tube shrinks inward. At the same time, the hot melt adhesive film also melts, covering the tiny gaps in the connection section, further preventing electrochemical corrosion.

[0060] In some embodiments of the present utility model, the ultrasonic connection section includes a first plane and a second plane arranged opposite to each other. At least one of the first plane and the second plane is in surface contact and cooperation with the anti-rotation portion, or at least one of the first plane and the second plane is in stop cooperation with the anti-rotation portion to prevent the connection section from rotating self.

[0061] In a specific embodiment, the ultrasonic connection section is generally in the shape of a cuboid or a cube, having a first upper plane and a first lower plane arranged opposite to each other, and a first front plane and a first rear plane arranged opposite to each other.

[0062] On the inner surface of the inner tube body 50, a first anti-rotation platform (not shown) and a second anti-rotation platform (not shown) can be provided along its radial direction. The first anti-rotation platform and the second anti-rotation platform are arranged opposite to each other. The working surfaces of the first and second anti-rotation platforms are both planes. Among them, the first and second anti-rotation platforms are both the above-mentioned anti-rotation portions.

[0063] The first anti-rotation platform can be in surface contact with the first upper plane, and the working surface area of the first anti-rotation platform can be the same as the area of the first upper plane; the second anti-rotation platform can be in surface contact with the first lower plane, and the working surface area of the second anti-rotation platform can be the same as the area of the first lower plane. In this way, the first anti-rotation platform blocks the self-rotation of the ultrasonic connection section, and the second anti-rotation platform blocks the self-rotation of the ultrasonic connection section.

[0064] In another specific embodiment, as Figure 2 、 3 、as shown in 6, on the inner surface of the inner tube body 50, a first stop protrusion 512 and a second stop protrusion 522 can be provided along its radial direction. The first stop protrusion 512 and the second stop protrusion 522 are arranged opposite to each other. Among them, the first and second stop protrusions are both the above-mentioned anti-rotation portions. The first stop protrusion 512 can be in stop cooperation with the first upper plane, and the second stop protrusion 522 can be in stop cooperation with the second lower plane. In this way, the first and second stop protrusions block the self-rotation of the ultrasonic connection section.

[0065] In yet another specific embodiment, a stop groove (not shown) may be formed on the inner surface of the inner tube body 50, and the stop groove serves as the above-mentioned anti-rotation portion. The ultrasonic connection section may be located within the stop groove, and the first front plane and the second rear plane may abut against the side wall of the stop groove, and the second lower plane may abut against the bottom wall of the stop groove. In this way, the stop groove blocks the rotation of the ultrasonic connection section.

[0066] The following embodiments are exemplified by providing a first stop protrusion 512 and a second stop protrusion 522 on the inner surface of the inner tube body 50 along its radial direction:

[0067] As Figure 2 shown, the inner tube body 50 is circumferentially divided into two parts: an upper arc-shaped shell 51 and a lower arc-shaped shell 52. The upper arc-shaped shell 51 is provided with a first stop protrusion 512, and the lower arc-shaped shell 52 is provided with a second stop protrusion 522. The upper arc-shaped shell 51 is provided with a first buckle 511, and the lower arc-shaped shell 52 is provided with a first card slot 521. The first card slot 521 and the first buckle 511 are in snap-fit to connect the upper arc-shaped shell 51 and the lower arc-shaped shell 52 together to form the inner tube body 50.

[0068] It should be noted that the upper arc-shaped shell 51 and the lower arc-shaped shell 52 can also be inserted and fitted with each other to connect the two together. The inner tube body 50 is circumferentially divided into three parts, the inner tube body 50 is circumferentially divided into four parts,..., the inner tube body 50 is circumferentially divided into N parts, where N is a positive integer, and any two adjacent ones of the N parts are in snap-fit or insertion fit.

[0069] In some embodiments of the present invention, the cable assembly further includes at least one outer tube body 60. When there is one outer tube body 60, the inner tube body 50 is disposed inside the outer tube body 60, and the inner tube body 50 is fixedly connected to the outer tube body 60; or,

[0070] When there are M outer tube bodies 60, where M≥2 and M is a positive integer. The M outer tube bodies 60 are coaxially arranged along the radial direction of the inner tube body 50. The inner tube body 50 is disposed in the innermost one of the N outer tube bodies 60, and the two are fixedly connected.

[0071] It should be noted that taking the cable assembly including one outer tube body 60 as an example:

[0072] As Figures 4 - 6 shown, a snap groove 63 is provided on the inner surface of the outer tube body 60, and an elastic buckle 523 is provided on the outer surface of the inner tube body 50. When the outer tube body 60 is inserted into the inner tube body 50 along the axial direction of the inner tube body 50, the elastic buckle 523 and the snap groove 63 are in snap-fit, so that the outer tube body 60 and the inner tube body 50 are fixedly connected. In this way, the outer tube body 60 protects the inner tube body 50 from being damaged, and further helps the inner tube body 50 to stably inhibit the rotation of the ultrasonic connection section.

[0073] Further, a fixing portion 62 is also provided on the outer surface of the outer tube body 60.

[0074] For example, as Figure 2 shown, the fixing portion 62 can be a through hole, and a bolt passes through the through hole and is fixedly connected to relevant parts in the external environment. Among them, the external environment can be vehicles such as new energy passenger cars, buses, and trucks. In this way, the outer tube body 60 can remain stationary relative to the vehicle body, which helps to suppress the shaking of the outer tube body 60 and the inner tube body 50, and further avoids the shaking of the first cable 10 and the second cable 20, thereby suppressing the self-rotation of the ultrasonic connection section.

[0075] Of course, it can be understood that in addition to the fixing portion 62 being a through hole, it can also be a buckle, an embedded slot, etc., and the present embodiment will not list them one by one.

[0076] Further, as Figure 6 shown, a positioning protrusion 64 is also provided on the inner surface of the outer tube body 60. The positioning protrusion 64 and the buckle groove 63 are arranged at intervals along the axial direction of the outer tube body 60. The positioning protrusion 64 can be the inner surface of one end (end A) of the outer tube body 60, and the buckle groove 63 can be the inner surface of the other end (end B) of the outer tube body 60. The outer tube body 60 is sleeved on the inner tube body 50 along the direction (direction C) from the buckle groove 63 to the positioning protrusion 64, and the inner tube body 50 abuts against the positioning protrusion 64. In this way, the position of the inner tube body 50 within the outer tube body 60 can be restricted by the positioning protrusion 64, so that the inner tube body 50 is accurately arranged at a preset position within the outer tube body 60. At the same time, the inner tube body 50 is also sleeved on the inner tube body 50 in a single direction, achieving an anti-fooling effect for the outer tube body 60 and avoiding incorrect assembly of the inner tube body 50.

[0077] In some embodiments of the present utility model, the cable assembly further includes a first sealing ring 81, a second sealing ring 82, a first cover plate 71, and a second cover plate 72.

[0078] In a specific embodiment, as Figure 2 , Figure 6 shown, a first sealing ring mounting portion 65 is provided on the inner surface of one end (end A) of the outer tube body 60, and a second sealing ring mounting portion 66 is provided on the inner surface of the other end (end B) of the outer tube body 60. The first sealing ring mounting portion 65 can be a first hole shoulder, and the second sealing ring mounting portion 66 can be a second hole shoulder.

[0079] The first sealing ring 81 is sleeved on the first cable 10 and is located at the first hole shoulder of the outer tube body 60. The first cover plate 71 is provided with a second card slot 711, and the outer surface of one end (end A) of the outer tube body 60 is provided with a second buckle 61 that is snap-fitted with the second card slot 711, so that the first cover plate 71 is detachably mounted on one end (end A) of the outer tube body 60. The first cover plate 71 covers the open end of the outer tube body 60 at one end (end A), and at the same time, the first cover plate 71 and the first hole shoulder sandwich the first sealing ring 81. Among them, the first cable 10 passes through the first cover plate 71.

[0080] The second sealing ring 82 is sleeved on the second cable 20 and is located at the second hole shoulder of the outer tube body 60. The second cover plate 72 is provided with a third card slot 721, and the outer surface of the other end (end B) of the outer tube body 60 is provided with a second buckle 61 that is snap-fitted with the third card slot 721, so that the second cover plate 72 is detachably mounted on the other end (end B) of the outer tube body 60. The second cover plate 72 covers the open end of the outer tube body 60 at the other end (end B), and at the same time, the second cover plate 72 and the second hole shoulder sandwich the second sealing ring 82. Among them, the second cable 20 passes through the second cover plate 72.

[0081] With such an arrangement, the compression deformation amounts of the first and second sealing rings reach the sealing effect to prevent water and air from entering the ultrasonic connection section through the gap between the inner and outer tube bodies. The first cover plate 71 and the second cover plate 72 are snapped onto both ends of the outer tube body 60, realizing the full enclosure of the ultrasonic connection section and being convenient for disassembly and assembly.

[0082] According to an embodiment of the second aspect of the present invention, the electrical appliance can be a motor in a vehicle or other electrical equipment in a vehicle. For example, the motor and the cable are electrically connected through the cable assembly. The electrical appliance includes the cable assembly in the first aspect. The electrical appliance has the advantages of the cable assembly, so details are not described herein again.

[0083] According to an embodiment of the third aspect of the present invention, the vehicle includes the electrical appliance in the second aspect. The vehicle has the advantages of the electrical appliance, so details are not described herein again.

[0084] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0085] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features.

[0086] In the description of the present utility model, the meaning of "a plurality of" is two or more.

[0087] In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0088] In the description of the present utility model, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0089] In the description of this specification, the descriptions of reference terms such as "an embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0090] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A cable assembly, characterized in that: include: A first cable (10); A second cable (20), one end of the second cable (20) being connected to one end of the first cable (10) to form a connection section; An inner tube body (50), wherein the connecting section is located inside the inner tube body (50), and a rotation-stopping portion is provided on the inner surface of the inner tube body (50), wherein the rotation-stopping portion cooperates with the connecting section to stop rotation.

2. The cable assembly according to claim 1, characterized in that: The connecting section comprises a first plane and a second plane disposed opposite to each other, at least one of the first plane and the second plane is in surface contact with the anti-rotation portion, or, At least one of the first plane and the second plane cooperates with the stopper of the rotation-stopping portion to prevent the connecting section from rotating.

3. The cable assembly according to claim 2, characterized in that: The anti-rotation portion comprises a stop protrusion arranged on the inner wall of the inner tube body (50), the stop protrusion being in stop cooperation with at least one of the first plane and the second plane, or, The anti-rotation portion comprises a stop groove arranged on the inner wall of the inner tube body (50), the connecting section is located in the stop groove, and at least one of the first plane and the second plane abuts against the groove wall of the stop groove.

4. The cable assembly according to claim 2, characterized in that: The inner tube body (50) is divided into N parts along its circumferential direction, N≥2, N is an integer, and any two adjacent parts of the N parts are snap-fitted or inserted into each other.

5. The cable assembly according to claim 2, characterized in that: It also comprises an outer tube body (60), the inner tube body (50) being arranged inside the outer tube body (60), and the inner tube body (50) being fixedly connected to the outer tube body (60).

6. The cable assembly according to claim 5, characterized in that: The outer tube body (60) is sleeved on the inner tube body (50); a buckle groove (63) is provided on one of the inner surface of the outer tube body (60) and the outer surface of the inner tube body (50); and an elastic buckle (523) is provided on the other; the elastic buckle (523) is buckled with the buckle groove (63).

7. The cable assembly according to claim 6, characterized in that: The buckle groove (63) and the positioning protrusion (64) are provided on the inner surface of the outer tube body (60); the positioning protrusion (64) and the buckle groove (63) are arranged at intervals along the axial direction of the outer tube body (60); the outer tube body (60) is sleeved on the inner tube body (50) along the direction from the buckle groove (63) to the positioning protrusion (64); and the inner tube body (50) is stopped by the positioning protrusion (64).

8. The cable assembly according to claim 7, characterized in that: A fixing portion (62) is provided on the outer surface of the outer tube body (60).

9. The cable assembly according to claim 5, characterized in that: It also includes a first sealing ring (81), a second sealing ring (82), a first cover plate (71), and a second cover plate (72). The first cover plate (71) is detachably mounted on one end of the outer tube (60), and the first cable (10) passes through the first cover plate (71). The second cover plate (72) is detachably mounted on the other end of the outer tube (60), and the second cable (20) passes through the second cover plate (72). The inner surface of one end of the outer tube body (60) is provided with a first sealing ring mounting portion (65), and the inner surface of the other end is provided with a second sealing ring mounting portion (66). The first sealing ring (81) is sleeved on the first cable (10) and is located inside the outer tube (60), and the first sealing ring (81) is sandwiched between the first sealing ring mounting portion (65) and the first cover plate (71); the second sealing ring (82) is sleeved on the second cable (20) and is located inside the outer tube (60), and the second sealing ring (82) is sandwiched between the second sealing ring mounting portion (66) and the second cover plate (72).

10. The cable assembly according to claim 2, characterized in that: It also comprises M outer tube bodies (60), M≥2, M being an integer, the M outer tube bodies (60) being coaxially arranged along the radial direction of the inner tube body (50), the inner tube body (50) being arranged on the innermost of the M outer tube bodies (60), and the two being fixedly connected.

11. The cable assembly according to claim 1, characterized in that: It also includes an insulating member (30), wherein the insulating member (30) covers the connecting section.

12. The cable assembly according to claim 11, characterized in that: A filling piece (40) is provided between the insulating piece (30) and the connecting section, and the filling piece (40) fills the gap between the insulating piece (30) and the connecting section.

13. An electrical appliance, characterized in that: A cable assembly comprising any one of claims 1-12.

14. A vehicle, characterized in that: Including the electrical appliance as described in claim 13.

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