Drag chain assembly, electrical equipment and vehicle

Abstract

The utility model discloses a drag chain assembly, electrical equipment and a vehicle, the drag chain assembly comprises: a plurality of drag chain links, the plurality of drag chain links are movably connected in sequence, and jointly form a central channel for a wire harness to pass through; the drag chain assembly has a limiting state, in the limiting state, the drag chain links are constructed to be suitable for being matched in a bendable mode in the first direction and matched in a limiting mode in the second direction, and the first direction is opposite to the second direction. According to the drag chain assembly, the drag chain links are arranged to be movable in sequence, the drag chain assembly can be deformed to meet the movement requirement of the wire harness, the drag chain assembly can effectively protect the wire harness in the movement process of the wire harness, and therefore the wire harness can be in linkage with a connected movement structure, and the wire harness can be prevented from being damaged. Moreover, the wire harness structure can be prevented from being damaged, and the use convenience and safety of the wire harness are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to harness fixing technical field especially, relates to a tow chain assembly, the electric appliance with this tow chain assembly and the vehicle with this tow chain assembly. BACKGROUND

[0002] In the related art, the unmanned aerial vehicle cabin of the vehicle is provided with a charging harness, and the movement track of the charging harness in the movement process of the overall structure is uncontrollable, and there is a risk of random movement. The harness may be scratched by other structures in the movement process, and the harness is easily damaged. Therefore, there is room for improvement. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, the utility model provides a tow chain assembly, which can realize the protection of the harness and make the harness deform according to the set track to link with the structure connected with the harness, thereby improving the safety and flexibility of the harness.

[0004] According to the tow chain assembly of the utility model embodiment, a plurality of tow chain links are movably connected in sequence, and a central passage for passing a harness is formed. The tow chain assembly has a limiting state. In the limiting state, the plurality of tow chain links are configured to be bendable in the first direction and limited in the second direction. The first direction is opposite to the second direction.

[0005] According to the tow chain assembly of the utility model embodiment, a plurality of tow chain links are movably connected in sequence, and a central passage for passing a harness is formed. The tow chain assembly has a limiting state. In the limiting state, the plurality of tow chain links are configured to be bendable in the first direction and limited in the second direction. The first direction is opposite to the second direction.

[0006] According to the tow chain assembly of some embodiments of the utility model, two adjacent tow chain links are rotatably connected.

[0007] According to the tow chain assembly of some embodiments of the utility model, one of the two adjacent tow chain links is provided with a first limiting part, and the other is provided with a second limiting part.

[0008] In the limiting state, the first limiting part is adapted to rotate away from the second limiting part in the first direction, and the first limiting part and the second limiting part are limited and pressed in the second direction.

[0009] According to the drag chain assembly of some embodiments of the present application, at least one of the first limiting part and the second limiting part is configured as a limiting surface, the limiting surface is distributed in parallel and at intervals with the rotation axes of the two adjacent drag chain links; and / or, one of the two adjacent drag chain links is provided with a limiting matching groove and the other is provided with a limiting matching surface, the limiting matching surface is in sliding fit with the inner wall of the limiting matching groove, and the limiting matching surface extends around the rotation axis of the drag chain link.

[0010] According to the drag chain assembly of some embodiments of the present application, one of the two adjacent drag chain links is provided with a first rotating part and the other is provided with a second rotating part, the first rotating part is arranged in the second rotating part to be rotatably matched with the second rotating part.

[0011] According to the drag chain assembly of some embodiments of the present application, the first rotating part comprises at least one rotating shaft, the second rotating part comprises at least one rotating matching hole, and at least one rotating shaft is matched with at least one rotating matching hole in one-to-one correspondence.

[0012] According to the drag chain assembly of some embodiments of the present application, the drag chain link comprises at least one intermediate plate and two side plates, the two side plates are oppositely distributed at intervals, and at least one intermediate plate is connected between the two side plates and jointly defines the central passage.

[0013] According to the drag chain assembly of some embodiments of the present application, the two side plates of the two adjacent drag chain links are movably connected in one-to-one correspondence.

[0014] According to the drag chain assembly of some embodiments of the present application, the plurality of drag chain links comprise a drag chain first link, a drag chain last link and at least one drag chain intermediate link connected between the drag chain first link and the drag chain last link.

[0015] The drag chain first link and / or the drag chain last link is provided with a mounting fixing part and / or a weight-reducing hole, the mounting fixing part is used for mounting and matching with the surrounding structure.

[0016] According to the drag chain assembly of some embodiments of the present application, the mounting fixing part comprises at least one mounting hole and at least one positioning hole, the mounting hole is used for penetrating the connecting piece connected with the surrounding structure, and the positioning hole is used for positioning and matching with the surrounding structure.

[0017] The utility model also proposes an electric appliance.

[0018] According to the electric appliance of the embodiment of the present application, the drag chain assembly of any one of the above embodiments is included.

[0019] The utility model also proposes a vehicle.

[0020] The vehicle according to the embodiments of the present application comprises the towing chain assembly according to any one of the above embodiments.

[0021] The vehicle according to some embodiments of the present application comprises a vehicle body, a top of the vehicle body is provided with a UAV cabin, the UAV cabin is internally provided with a charging wire harness and the towing chain assembly, and the charging wire harness is arranged in the central passage.

[0022] The vehicle, the electrical appliance and the towing chain assembly have the same advantages as those of the prior art, and details are not repeated here.

[0023] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

[0025] Figure 1 is an assembly schematic view of the towing chain assembly and the charging wire harness of the embodiments of the present application;

[0026] Figure 2 is a structural schematic view of the towing chain assembly of the embodiments of the present application;

[0027] Figure 3 is a structural schematic view of the first section of the towing chain of the embodiments of the present application;

[0028] Figure 4 is a structural schematic view of the intermediate section of the towing chain of the embodiments of the present application;

[0029] Figure 5 is a structural schematic view of the last section of the towing chain of the embodiments of the present application;

[0030] Figure 6 is a connection schematic view of the intermediate sections of the towing chain of the embodiments of the present application (enlarged view at middle A); Figure 2

[0031] Figure 7 is a schematic view of the towing chain assembly in a limiting state of the embodiments of the present application.

[0032] REFERENCE NUMERALS:

[0033] towing chain assembly 100,

[0034] first section of the towing chain 111, intermediate section of the towing chain 112, last section of the towing chain 113, central passage 114, threading opening 115,

[0035] ​Side plate 121, middle plate 122, limiting surface 123, limiting matching groove 124, limiting matching surface 125, rotating shaft 126, rotating matching hole 127, positioning hole 128, mounting hole 129, lightening hole 130,

[0036] Charging harness 200. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and cannot be understood as limiting the present application.

[0038] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the features defined as "first" and "second" can be explicitly or implicitly included one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0039] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] The following will be described with reference to Figures 1-7 The drag chain assembly 100 according to the embodiments of the present application is described below, which can be used to pass the wire harness to protect the wire harness, and at the same time, the wire harness can be deformed according to the set trajectory after being passed through the drag chain assembly 100 to link with the structure connected by the wire harness, thereby improving the safety and flexibility of the wire harness.

[0041] As Figures 1-7As shown, the drag chain assembly 100 according to one embodiment of the present application comprises a plurality of drag chain links.

[0042] The plurality of drag chain links are movably connected in sequence, that is, the plurality of drag chain links are arranged in series. The number of the drag chain links can be three, four, five or even more, that is, the overall length of the drag chain assembly 100 can be flexibly set according to the actual threading requirements. For example, when the wire harness is relatively short, the number of the drag chain links can be relatively small, and when the wire harness is relatively long, the number of the drag chain links can be relatively large.

[0043] The plurality of drag chain links collectively form a central passage 114 for threading the wire harness after being connected in sequence, that is, the plurality of drag chain links can be hollow. For example, each of the plurality of drag chain links forms a threading opening 115, and the threading openings 115 of the plurality of drag chain links collectively form the central passage 114. In this way, Figure 1 As shown, when the wire harness is threaded through the drag chain assembly 100, the wire harness can be threaded through the threading openings 115 of the plurality of drag chain links in sequence, that is, the wire harness can be threaded through the central passage 114 as a whole, so that the plurality of drag chain links can protect the wire harness, that is, the wire harness is prevented from directly contacting other structural members by contacting the other structural members through the drag chain links, thereby reducing the scratching of the wire harness and ensuring the structural integrity and safety of the wire harness.

[0044] The drag chain assembly 100 has a limiting state, and in the limiting state, the plurality of drag chain links are configured to be bendable in the first direction and limited in the second direction. The first direction is opposite to the second direction. In this way, the drag chain assembly 100 can deform in the set direction, and the set direction is the movement direction of the wire harness. In other words, the drag chain assembly 100 can move with the wire harness in the set direction, and can also limit the wire harness in the non-set direction to prevent the wire harness from moving randomly.

[0045] Specifically, as shown, Figure 7 The drag chain assembly 100 is in the limiting state, wherein the first direction can be the upward direction in Figure 7 , and the second direction is the downward direction in Figure 7 , that is, the drag chain assembly 100 is arranged to be bent and deformed upward from the position in Figure 7 , and cannot be bent and deformed downward. In this way, the wire harness and the drag chain assembly 100 can simultaneously move upward relative to the position corresponding to the limiting state, and can also be reset downward to the position after moving upward, so that the wire harness can move according to the set trajectory to meet the actual use requirements. It should be noted that the specific directions and settings of the first direction and the second direction can be flexibly set according to actual requirements, that is, not limited to the embodiments of the present application.

[0046] Thus, the plurality of drag chain links are sequentially arranged to be movable, so that the shape of the drag chain assembly 100 can be changed, i.e., the drag chain assembly 100 can be deformed in a desired direction or trajectory. In this way, the drag chain assembly 100 can be deformed to adapt to the movement requirements of the wire harness, and the drag chain assembly 100 can effectively protect the wire harness during the movement of the wire harness, so that the wire harness can be linked with the connected movement structure, and the wire harness structure can be prevented from being damaged, thereby improving the use convenience and safety of the wire harness.

[0047] In some embodiments, two adjacent drag chain links are rotatably connected, so that one of the two adjacent drag chain links can be rotated to different angles relative to the other, thereby realizing the shape change of the drag chain assembly 100.

[0048] In this way, the plurality of drag chain links are connected in a rotating manner. As shown in FIG. 1, the plurality of drag chain links are rotatably connected, and when in the limiting state as shown in the figure, one of the drag chain links on the right side can be rotated upward relative to the one on the left side, so that the right end of the entire drag chain assembly 100 can be bent upward relative to the left end, realizing the bending and curling of the drag chain assembly 100, thereby facilitating the movement of the wire harness to different shapes or angles. Figure 4

[0049] In this way, the plurality of drag chain links are connected in a rotating manner. As shown in FIG. 1, the plurality of drag chain links are rotatably connected, and when in the limiting state as shown in the figure, one of the drag chain links on the right side can be rotated upward relative to the one on the left side, so that the right end of the entire drag chain assembly 100 can be bent upward relative to the left end, realizing the bending and curling of the drag chain assembly 100, thereby facilitating the movement of the wire harness to different shapes or angles.

[0050] In some embodiments, one of the two adjacent drag chain links is provided with a first limiting portion and the other is provided with a second limiting portion, and the two adjacent drag chain links are limited by the abutting cooperation of the first limiting portion and the second limiting portion, so as to limit the deformation of the drag chain assembly 100 in a non-set direction, thereby realizing the directional protection of the wire harness.

[0051] In the limiting state, the first limiting portion is adapted to rotate away from the second limiting portion along a first direction, and the first limiting portion and the second limiting portion are limited and abutted along a second direction. Specifically, as shown in FIG. 1, the drag chain assembly 100 is in the limiting state, wherein the first direction can be the upward direction in FIG. 1, and the second direction is the downward direction in FIG. 1. At this position, the first limiting portion and the second limiting portion are limited and abutted, and the drag chain link on the left side abuts against the drag chain link on the right side, so that the drag chain link on the right side cannot be rotated downward relative to the drag chain link on the left side, while the drag chain link on the right side can be rotated upward relative to the drag chain link on the left side. During the rotation, the first limiting portion and the second limiting portion gradually separate, so that the drag chain link can be reset to the limiting state. Figure 7 Figure 7 Figure 7 ​​​​

[0052] Thus, by setting the limiting cooperation of the first limiting part and the second limiting part, it is beneficial to ensure that the adjacent two drag chain links can move within the set track range, so that the wire harness can also move, meeting the linkage demand of the wire harness and the surrounding structure.

[0053] In some embodiments, at least one of the first limiting part and the second limiting part is configured as a limiting surface 123, i.e., the first limiting part can be configured as a limiting surface 123, and the second limiting part can be configured as other limiting forms, or the second limiting part can be configured as a limiting surface 123, and the first limiting part can be configured as other limiting forms, or both the first limiting part and the second limiting part can be configured as limiting surfaces 123, so as to achieve the limiting effect of the two drag chain links by pressing two limiting surfaces 123.

[0054] Specifically, as shown in Figures 3-5 the bottom left end and the bottom right end of the drag chain link are formed with limiting surfaces 123, so that the limiting surfaces 123 of the two drag chain links can be pressed and limited when in the limiting state, so that the two drag chain links remain in the limiting state and cannot move in the non-set direction.

[0055] Among them, the limiting surface 123 is distributed in parallel with the rotation axis 126 line of the adjacent two drag chain links, so that when the limiting surfaces 123 of the two drag chain links are pressed and limited, the drag chain link can be effectively limited from rotating in the non-set direction, ensuring the reliability of the bending deformation of the drag chain assembly 100.

[0056] And / or, one of the adjacent two drag chain links is provided with a limiting cooperation groove 124 and the other is provided with a limiting cooperation surface 125, the limiting cooperation surface 125 is in sliding cooperation with the inner wall of the limiting cooperation groove 124, and the limiting cooperation surface 125 extends around the rotation axis 126 line of the drag chain link, as shown in Figure 4 the left end of the drag chain link is provided with a limiting cooperation groove 124, and the right end of the drag chain link is provided with a limiting cooperation surface 125, the limiting cooperation groove 124 has a circular arc inner wall surface, and the limiting cooperation surface 125 is also configured as a circular arc surface, the radii of the circular arc inner wall surface and the limiting cooperation surface 125 are the same, and the centers are located on the rotation axis 126 line of the drag chain link.

[0057] Thus, when the adjacent two drag chain links are rotationally connected, the limiting cooperation surface 125 of one drag chain link extends into the limiting cooperation groove 124 and is attached to the inner wall surface of the limiting cooperation groove 124, and the two drag chain links are in sliding cooperation around the rotation axis 126 line, ensuring that the drag chain assembly 100 can be smoothly deformed and bent, realizing the linkage installation of the wire harness and the surrounding structure.

[0058] In some embodiments, one of the two adjacent drag chain links is provided with a first rotating part and the other is provided with a second rotating part, the first rotating part is arranged in the second rotating part to be rotatably connected with the second rotating part, that is, when the two drag chain links are rotatably connected, the first rotating part of one drag chain link is inserted into the second rotating part of the other drag chain link to realize the rotatable connection of the two drag chain links.

[0059] That is, in the drag chain link of the utility model, when the drag chain link is installed, the two adjacent drag chain links are rotatably connected without setting a separate rotating part, and the two drag chain links are directly rotatably connected through the structure of the two drag chain links, so that the structure is simple, the installation is convenient, the number of connecting parts is reduced, and the setting cost is reduced.

[0060] In some embodiments, the first rotating part includes at least one rotating shaft 126, and the second rotating part includes at least one rotating hole 127, and the at least one rotating shaft 126 is matched with the at least one rotating hole 127 one by one to rotatably connect the two adjacent drag chain links through the insertion and matching of the rotating shaft 126 and the rotating hole 127.

[0061] In actual design, the rotating shaft 126 and the rotating hole 127 can be one, two or more, and the specific number is not limited by the utility model. When the rotating shaft 126 and the rotating hole 127 are more than two, each rotating shaft 126 can be rotatably connected with the rotating hole 127, which is beneficial to improve the reliability of the rotating connection.

[0062] Specifically, as shown in Figure 3 and 4 , the drag chain link is provided with two rotating holes 127, and the two rotating holes 127 are oppositely distributed on the two sides of the drag chain link, and as shown in Figure 4 and Figure 5 , the drag chain link is provided with two rotating shafts 126, and the two rotating shafts 126 are spaced apart and coaxially distributed, so that when the plurality of drag chain links are connected, the two adjacent drag chain links are connected through the two rotating shafts 126 and the two rotating holes 127.

[0063] In some embodiments, the drag chain link includes at least one intermediate plate 122 and two side plates 121, the two side plates 121 are oppositely distributed, and the at least one intermediate plate 122 is connected between the two side plates 121 and cooperatively defines a central passage 114. That is, the central passage 114 is formed between the two side plates 121 and the intermediate plate 122, so that the two side plates 121 and the intermediate plate 122 can cooperatively protect the wire harness.

[0064] Specifically, as shown in Figure 3As shown in the drawings, the chain link comprises one middle plate 122 and two side plates 121, the two side plates 121 are oppositely distributed, and the middle plate 122 is connected to the edges of the two side plates 121, so that the chain link is configured as a groove structure, i.e., a wire passing hole 115 is formed in the middle of the chain link, and as shown in the drawings, Figure 4 and Figure 5 As shown in the drawings, the chain link comprises two middle plates 122 and two side plates 121, the two side plates 121 are oppositely distributed, and the two middle plates 122 are respectively connected to the two side edges of the two side plates 121, so that the chain link is configured as a cylindrical structure, and the wire passing hole 115 penetrates the chain link in the left-right direction, so that the wire harness can be arranged between the side plates 121 and the middle plates 122 of the plurality of chain links, and the structure is simple and convenient to install.

[0065] In some embodiments, the two side plates 121 of the adjacent two chain links are movably connected one by one, i.e., when connecting the plurality of chain links, the two side plates 121 of one chain link are rotatably connected to the two side plates 121 of another chain link one by one, realizing the rotatable connection of the two positions, and improving the stability of the connection and cooperation of the adjacent two chain links.

[0066] Specifically, as shown in the drawings, Figure 4 the two side plates 121 of the chain link are provided with a rotating shaft 126 and a rotating fitting hole 127, the rotating fitting holes 127 of the two side plates 121 are oppositely arranged, and the rotating shafts 126 of the two side plates 121 are protrudingly arranged in directions away from each other. In this way, when connecting the adjacent two chain links, the two rotating shafts 126 of one chain link are inserted and fitted with the two rotating fitting holes 127 of another chain link, realizing the rotatable connection, and the rotating process is more stable.

[0067] In some embodiments, the plurality of chain links comprise a chain head 111, a chain tail 113, and at least one chain middle link 112 connected between the chain head 111 and the chain tail 113. That is, the chain middle link 112 can be provided as one, two or even more, and at least one middle chain link is connected between the chain head 111 and the chain tail 113. As shown in the drawings, Figure 1 , Figure 2 and Figure 7 As shown in the drawings, the middle chain link is provided as seven, and of course, the number of middle chain links is not limited to this, and can be flexibly set according to actual needs.

[0068] Among them, the chain head 111 and / or the chain tail 113 is provided with a mounting and fixing part, which is used for mounting and cooperating with the surrounding structure, i.e., the chain head 111 can be fixedly connected with the surrounding structure through the mounting and fixing part, and the chain tail 113 can be fixedly connected with the surrounding structure through the mounting and fixing part.

[0069] As in the actual design, the drag chain assembly 100 is used for the charging wire harness 200 of the unmanned aerial vehicle cabin passing through the roof of the vehicle, the charging wire harness 200 passes through the center channel 114 of the drag chain assembly 100, at this time, the mounting and fixing part can be arranged on the drag chain first section 111, the mounting and fixing part of the drag chain first section 111 can be relatively fixed with the cabin body of the unmanned aerial vehicle cabin, at the same time, the mounting and fixing part can also be arranged on the drag chain last section 113, the mounting and fixing part of the drag chain last section 113 can be connected with other structures in the unmanned aerial vehicle cabin, so that the charging wire harness 200 can move with other structures in the unmanned aerial vehicle cabin relative to the vehicle body.

[0070] Therefore, the drag chain first section 111 and the drag chain last section 113 are connected with different two structures respectively, and the relative movement of the plurality of drag chain intermediate sections 112 can realize the linkage of the wire harness and the surrounding structure.

[0071] And / or, the drag chain first section 111 and / or the drag chain last section 113 are provided with weight reduction holes 130, that is, the weight reduction holes 130 can be arranged on the drag chain first section 111 or the drag chain last section 113, and it needs to be explained that, as shown in Figure 2 And Figure 7 The length of the drag chain first section 111 and the length of the drag chain last section 113 are both set to be greater than the length of the drag chain intermediate section 112, and the weight reduction holes 130 are arranged to reduce the weight of the drag chain first section 111 and the drag chain last section 113.

[0072] In some embodiments, the mounting and fixing part includes at least one mounting hole 129 and at least one positioning hole 128, the mounting hole 129 is used for passing through the connecting piece connected with the surrounding structure, and the positioning hole 128 is used for positioning cooperation with the surrounding structure to realize the positioning and installation of the drag chain first section 111 or the drag chain last section 113 with the surrounding structure.

[0073] Specifically, as shown in Figure 3 The drag chain first section 111 is provided with one positioning hole 128 and one mounting hole 129, the positioning hole 128 and the mounting hole 129 are both arranged on the middle plate 122 of the drag chain first section 111, the mounting hole 129 is configured as a circular hole, so that the drag chain first section 111 can be fixed and installed with the surrounding structure through the connecting piece such as bolt passing through the mounting hole 129, and the positioning hole 128 can be configured as a waist-shaped hole, the positioning hole 128 can be positioned and cooperated with the positioning part of the surrounding structure, for example, the surrounding structure is provided with a positioning column, the positioning column can be inserted into the positioning hole 128 to realize the positioning cooperation of the surrounding structure with the drag chain first section 111.

[0074] Therefore, during the actual installation, the positioning hole 128 can be positioned and cooperated with the surrounding structure first, and after positioning, the connecting piece is passed through the mounting hole 129 to fix the drag chain first section 111 with the surrounding structure, which is simple in structure and convenient to install. Similarly, as shown in Figure 5As shown, the tail segment 113 of the drag chain can also be provided with a positioning hole 128 and a mounting hole 129, and is installed and fixed in the same way as the head segment 111 of the drag chain.

[0075] Of course, any one of the circular hole and the waist-shaped hole can be used as the positioning hole 128 to reduce the setting of one connecting piece.

[0076] The utility model also proposes a kind of electrical equipment.

[0077] According to the electrical equipment of the utility model embodiment, the harness protection of electrical equipment can be realized by setting the drag chain assembly 100, and the harness can be linked with other moving structures inside the electrical equipment to realize flexible installation of the harness.

[0078] The electrical equipment can be a household appliance, such as a floor cleaning machine, a cooking device, etc., or the electrical equipment can be an industrial device or other type of device.

[0079] The utility model also proposes a kind of vehicle.

[0080] According to the vehicle of the utility model embodiment, the drag chain assembly 100 described in any of the above embodiments is included. The harness on the vehicle can be arranged in the drag chain assembly 100, so that the drag chain assembly 100 can not only protect the structure of the harness and avoid scratching the outer skin of the harness, but also realize directional fixation of the harness to enable the harness to move in the set direction, which is beneficial to realize linkage with the surrounding structure and avoid chaotic movement of the harness.

[0081] In some embodiments, the vehicle includes a vehicle body, and the top of the vehicle body is provided with a UAV cabin, the UAV cabin is provided with a charging harness 200 and a drag chain assembly 100, and the charging harness 200 is arranged in the central channel 114.

[0082] Specifically, the UAV cabin is installed on the top of the vehicle body, and the UAV cabin can be provided with a clamping structure for fixing the UAV. After the drag chain assembly 100 is installed in the UAV cabin, the head segment 111 of the drag chain can be relatively fixed with the cabin body of the UAV cabin, and the tail segment 113 of the drag chain can be relatively fixed with the clamping structure in the UAV cabin. The clamping structure moves relative to the cabin body of the UAV cabin to realize clamping of the UAV, and the charging harness 200 moves with the clamping structure relative to the cabin body. After the UAV is clamped and fixed, the charging harness 200 can be electrically connected with the UAV to charge the UAV with the charging harness 200.

[0083] Therefore, the drag chain assembly 100 not only can realize the fixation and protection of the charging wire harness 200, avoid the scratch and structural damage of the charging wire harness 200, but also can realize the linkage of the wire harness with the clamping structure during the movement of the clamping structure, thereby facilitating the accurate connection of the charging wire harness 200 with the unmanned aerial vehicle and improving the reliability of the structure.

[0084] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like means 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 application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A chain drag assembly, characterized by, The utility model relates to a kind of tow chain assemblies, comprising: A plurality of tow chain links are movably connected in sequence, and a central passage (114) for passing a wire harness is formed by the plurality of tow chain links; Wherein, the tow chain assembly has a limiting state, and the plurality of tow chain links are configured to be bendably matched in a first direction and limitedly matched in a second direction in the limiting state, the first direction is opposite to the second direction.

2. The chain drag assembly of claim 1, wherein, Two adjacent tow chain links are rotatably connected.

3. The chain drag assembly of claim 2, wherein, One of the two adjacent tow chain links is provided with a first limiting portion, and the other is provided with a second limiting portion. In the limiting state, the first limiting portion is adapted to rotate away from the second limiting portion in the first direction, and the first limiting portion and the second limiting portion are limitedly pressed in the second direction.

4. The chain drag assembly of claim 3, wherein, At least one of the first limiting portion and the second limiting portion is configured as a limiting surface (123), which is distributed in parallel with the rotation axis (126) of the two adjacent tow chain links. And / or, one of the two adjacent tow chain links is provided with a limiting matching groove (124), and the other is provided with a limiting matching surface (125), the limiting matching surface (125) is slidingly matched with the inner wall of the limiting matching groove (124), and the limiting matching surface (125) extends around the rotation axis (126) of the tow chain link.

5. The chain drag assembly of claim 2, wherein, One of the two adjacent tow chain links is provided with a first rotating portion, and the other is provided with a second rotating portion, the first rotating portion is arranged in the second rotating portion to be rotatably matched with the second rotating portion.

6. The chain assembly of claim 5, wherein, The first rotating portion includes at least one rotating shaft (126), and the second rotating portion includes at least one rotating matching hole (127), at least one rotating shaft (126) is matched with at least one rotating matching hole (127) one by one.

7. The chain drag assembly of claim 1, wherein, The tow chain link includes at least one intermediate plate (122) and two side plates (121), the two side plates (121) are oppositely distributed, and at least one intermediate plate (122) is connected between the two side plates (121) and collectively defines the central passage (114).

8. The chain drag assembly of claim 7, wherein, The two side plates (121) of the two adjacent tow chain links are movably connected one by one.

9. The chain drag assembly of claim 1, wherein, The plurality of tow chain links include a first tow chain link (111), a last tow chain link (113), and at least one intermediate tow chain link (112) connected between the first tow chain link (111) and the last tow chain link (113). The first tow chain link (111) and / or the last tow chain link (113) is provided with a mounting fixing portion and / or a weight-reducing hole (130), and the mounting fixing portion is used for mounting and matching with a surrounding structure.

10. The chain drag assembly of claim 9, wherein, The mounting fixing portion includes at least one mounting hole (129) and at least one positioning hole (128), the mounting hole (129) is used for passing a connecting member connected with the surrounding structure, and the positioning hole (128) is used for positioning and matching with the surrounding structure.

11. An electrical appliance characterized by The utility model relates to a kind of tow chain assemblies, comprising:

12. A vehicle characterized by comprising: The utility model relates to a kind of tow chain assemblies, comprising: The utility model relates to a kind of tow chain assemblies, comprising:

13. The vehicle of claim 12, wherein, The unmanned aerial vehicle cabin is arranged on the top of the vehicle body, and the charging wire harness (200) and the drag chain assembly are arranged in the unmanned aerial vehicle cabin.

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