Drag chain structure capable of moving in multiple directions and sliding rail

Abstract

The utility model provides a multidirectional movable drag chain structure and a slide rail. The multidirectional movable drag chain structure comprises a plurality of first drag chain units and a plurality of second drag chain units, the second drag chain unit is rotatably connected between the two adjacent first drag chain units, so that the two adjacent first drag chain units can rotate in one direction or multiple directions through the second drag chain unit. The utility model relates to the technical field of automobile manufacturing, and can solve the problem that a drag chain in the prior art cannot adapt to an installation environment and has a height difference.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a multi-directional drag chain structure and a slide rail. Background Art

[0002] In the interior decoration structure of a car, there are many adjustable components, such as car seats, ceilings, mobile display screens, etc. The positions of these components can be slid and adjusted according to actual usage requirements to improve driving comfort.

[0003] Please see attached Figure 1 At present, the conventional sliding structure mainly includes a harness box 5, a drag chain and a slide rail 3. The drag chain of the prior art can only move in a horizontal plane through the slide rail 3. The harness box 5 and the drag chain in the slide rail 3 should be located in the same plane. At this time, the thickness of the carpet cloth that can be laid on the harness box is T1. However, when there is a height difference in the layout environment, for example, when the customer requires the thickness of the carpet cloth to be increased from T1 to T2, the height of the harness box 5 needs to be reduced by H, resulting in the height of the drag chain in the harness box 5 being lower than the height of the drag chain in the slide rail 3, which in turn causes the drag chain to move poorly or produce abnormal noise, affecting the service life and user experience.

[0004] In order to make the drag chain move in a horizontal plane, the common solution is to lower the bottom elevation of the slide rail so that the drag chain in the slide rail is lowered to the same horizontal plane as the drag chain in the harness box, but this will increase the thickness, weight and cost of the slide rail, and also increase the layout requirements for the interior space of the car to a certain extent, which in turn limits the application of the sliding structure of the drag chain. Therefore, it is necessary to provide a multi-directional drag chain structure that can solve the problem that the drag chain in the prior art cannot adapt to the height difference of the installation environment. Utility Model Content

[0005] In view of the above situation, the utility model provides a multi-directional drag chain structure and a slide rail, which can solve the problem in the prior art that the drag chain cannot adapt to the height difference of the installation environment.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a multi-directional drag chain structure, including a plurality of first drag chain units and a plurality of second drag chain units; the second drag chain unit is rotatably connected between two adjacent first drag chain units, so that the two adjacent first drag chain units can rotate unidirectionally or multi-directionally through the second drag chain unit.

[0007] In the embodiment of the utility model, the second drag chain unit can be rotatably connected to one of the two adjacent first drag chain units around the first rotation axis; the second drag chain unit can also be rotatably connected to the other of the two adjacent first drag chain units around the second rotation axis.

[0008] In an embodiment of the utility model, a first axle pin is provided on one of the first drag chain unit and the second drag chain unit, a first axle hole is provided on the other of the first drag chain unit and the second drag chain unit, the first axle pin is rotatably provided in the first axle hole, and the first axle pin and the first axle hole define a first rotation axis.

[0009] In the embodiment of the utility model, the first axle pin and the first axle hole are respectively designed to be fan-shaped, so as to limit the rotation angle of the first drag chain unit around the first rotation axis by the first straight side of the first axle pin contacting with the first straight inner wall of the corresponding side of the first axle hole.

[0010] In an embodiment of the utility model, a second axial hole is further provided on one of the first drag chain unit and the second drag chain unit, and a second axial pin is further provided on the other of the first drag chain unit and the second drag chain unit. The second axial pin is rotatably arranged in the second axial hole, and the second axial pin and the second axial hole define a second rotation axis.

[0011] In the embodiment of the utility model, the second axle pin and the second axle hole are respectively designed to be fan-shaped, so as to limit the rotation angle of the first drag chain unit around the second rotation axis by the second straight edge of the second axle pin contacting the second straight inner wall of the corresponding side of the second axle hole.

[0012] In an embodiment of the utility model, a first cavity is formed on the first drag chain unit and passes through the first drag chain unit along a third direction. The first cavity is designed to accommodate at least a portion of the second drag chain unit, so that when the first drag chain unit rotates around the first rotation axis, the second drag chain unit can rotate in the first cavity, and the rotation angle of the first drag chain unit around the first rotation axis is limited by the interference between the second drag chain unit and the side wall of the first cavity extending parallel to the first rotation axis, and / or when the first drag chain unit rotates around the second rotation axis, the rotation angle of the first drag chain unit around the second rotation axis is limited by the interference between the second drag chain unit and the side wall of the first cavity extending parallel to the second rotation axis.

[0013] In an embodiment of the utility model, a second cavity is formed on the second drag chain unit and penetrates the second drag chain unit along a third direction. The second cavity is designed to accommodate at least a portion of the first drag chain unit, so that when the first drag chain unit rotates around the first rotation axis, the first drag chain unit can rotate in the second cavity, and the rotation angle of the first drag chain unit around the first rotation axis is limited by the interference between the first drag chain unit and the side wall of the second cavity extending parallel to the first rotation axis, and / or when the first drag chain unit rotates around the second rotation axis, the rotation angle of the first drag chain unit around the second rotation axis is limited by the interference between the first drag chain unit and the side wall of the second cavity extending parallel to the second rotation axis.

[0014] In the embodiment of the utility model, the first drag chain unit and the second drag chain unit are connected through the first cavity and the second cavity, so that the wiring harness can pass through the first drag chain unit and the second drag chain unit.

[0015] A slide rail comprises the slide rail and the multi-directionally movable drag chain structure.

[0016] In an embodiment of the utility model, the slide rail is formed with a guide surface, and the guide surface is used to guide at least one first drag chain unit to rotate around the second rotation axis or the first rotation axis.

[0017] In an embodiment of the utility model, the slide rail is a curved slide rail, and at least one first drag chain unit in the drag chain structure entering the slide rail rotates around the first rotation axis and / or the second rotation axis.

[0018] The utility model adopts the above technical solution, so that it has the following beneficial effects:

[0019] 1. The utility model is provided with a first drag chain unit and a second drag chain unit, and a first rotation axis and a second rotation axis are formed between the first drag chain unit and the second drag chain unit through an axle pin and an axle hole. The first rotation axis and the second rotation axis rotate independently of each other and the rotation directions are perpendicular, thereby meeting the multi-directional rotation requirements of horizontal rotation and vertical rotation, improving and expanding the function of the traditional drag chain structure, ensuring smooth transmission and no abnormal noise, and enabling the drag chain structure to adapt to various installation environments, which can expand the application scenarios of the drag chain structure and help reduce costs.

[0020] 2. The utility model can design the shaft hole and the shaft pin into a fan shape, and through the cooperation of the straight inner wall of the fan-shaped shaft hole and the straight edge of the fan-shaped shaft pin, provide horizontal and vertical limits between the first drag chain unit and the second drag chain unit, respectively, for controlling the horizontal rotation angle and vertical rotation angle of the drag chain structure, and ensure the stability and smooth operation of the drag chain structure, reducing the risk of jamming and abnormal noise.

[0021] 3. The utility model realizes the series connection between the first drag chain unit and the second drag chain unit by providing the first cavity and the second cavity. At the same time, the rotation angle of the second drag chain unit can be limited by the corresponding side wall of the first cavity, or the rotation angle of the first drag chain unit can be limited by the corresponding side wall of the second cavity, thereby ensuring the relative rotation angle between the first drag chain unit and the second drag chain unit in the horizontal and vertical directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the arrangement environment of the drag chain at the height difference position in the prior art;

[0023] Figure 2 This is a three-dimensional layout diagram of the multi-directional drag chain structure of the utility model (the second shaft pin is cylindrical);

[0024] Figure 3 yes Figure 2 (the second drag chain unit can be inserted in the first cavity);

[0025] Figure 4 It is a three-dimensional diagram of the first drag chain unit in the multi-directional drag chain structure of the utility model;

[0026] Figure 5 It is a three-dimensional diagram of the second drag chain unit in the multi-directional drag chain structure of the utility model;

[0027] Figure 6 It is a schematic diagram of the upward vertical movement of the multi-directional drag chain structure of the utility model;

[0028] Figure 7 yes Figure 6 The main view;

[0029] Figure 8 It is a schematic diagram of the downward vertical movement of the multi-directional drag chain structure of the utility model;

[0030] Fig. 9 yes Figure 8 The main view;

[0031] Fig.10 It is a schematic diagram of horizontal linear motion of the multi-directional drag chain structure of the utility model;

[0032] Fig.11 yes Fig.10 A top view of

[0033] Fig.12 It is a horizontal lateral rotation schematic diagram of the multi-directional drag chain structure of the utility model;

[0034] Fig.13 yes Fig.12 A top view of

[0035] Fig.14 It is an exploded view of the multi-directional drag chain structure of the utility model (the first drag chain unit can be inserted in the second cavity);

[0036] Fig.15 This is an exploded view of the multi-directional drag chain structure of the utility model (the second shaft pin is fan-shaped);

[0037] Fig.16 This is a diagram of the use state of the multi-directional drag chain structure of the utility model (without height difference);

[0038] Fig.17 This is a diagram of the use state of the multi-directional drag chain structure of the utility model (with an upward height difference);

[0039] Fig.18 This is a diagram of the use state of the multi-directional drag chain structure of the utility model (with a downward height difference);

[0040] Fig.19 This is a diagram of the use state of the multi-directional drag chain structure of the utility model entering and exiting the slide rail;

[0041] Fig. 20 yes Fig.19 A partial enlarged view of the

[0042] Fig.21 yes Fig.19 A partial cross-sectional view of

[0043] Fig. 22 It is a partial structural schematic diagram of the slide rail in the multi-directional drag chain structure of the utility model;

[0044] Fig.23 and Fig.24 It is a schematic diagram of the drag chain structure in the multi-directional drag chain structure of the utility model moving to two positions in the arc-shaped slide rail;

[0045] Fig.25 The utility model is a schematic structural diagram of a multi-directionally movable drag chain structure through which a wiring harness is passed.

[0046] The corresponding relationship between the reference numerals and the components is as follows:

[0047] First drag chain unit 1, first axial hole 101, first straight inner wall 1011, second axial hole 102, second straight inner wall 1021, first cavity 103, avoidance recess 104, second drag chain unit 2, first axial pin 201, first straight edge 2011, second axial pin 202, second straight edge 2021, second cavity 203, avoidance slope 204, slide rail 3, guide surface 301, notch 302, drag chain structure 4, wiring harness box 5, wiring harness 6, first rotation axis a, second rotation axis b. DETAILED DESCRIPTION

[0048] To facilitate understanding of the present invention, the following description is provided in conjunction with the accompanying drawings and embodiments.

[0049] Please see attached Figure 2 A multi-directional drag chain structure 4 includes a plurality of first drag chain units 1 and a plurality of second drag chain units 2; the second drag chain units 2 are rotatably connected between two adjacent first drag chain units 1, so that the two adjacent first drag chain units 1 can rotate unidirectionally or multidirectionally through the second drag chain units 2.

[0050] Preferably, two adjacent first drag chain units 1 can be rotated unidirectionally to the left or right in the horizontal direction through the second drag chain unit 2 to meet the layout and transmission requirements in the horizontal direction; two adjacent first drag chain units 1 can be rotated unidirectionally upward or downward in the vertical direction through the second drag chain unit 2 to meet the layout and transmission requirements in the vertical direction; two adjacent first drag chain units 1 can also be rotated in multiple directions in the horizontal direction and the vertical direction at the same time through the second drag chain unit 2 to meet the layout and transmission requirements in the three-dimensional space. The drag chain structure 4 can meet the design requirements of the moving parts inside the car by rotating in different directions, thereby increasing the application scenarios of the drag chain structure 4.

[0051] Please see attached Figure 2 To Attachment Fig.15 The second drag chain unit 2 can be rotatably connected to one of the two adjacent first drag chain units 1 around the first rotation axis a; the second drag chain unit 2 can also be rotatably connected to the other of the two adjacent first drag chain units 1 around the second rotation axis b.

[0052] Please see attached Fig.10 To Attachment Fig.13 , a first axle pin 201 is formed on the second drag chain unit 2, a first axle hole 101 is formed on the first drag chain unit 1, the first axle pin 201 is rotatably arranged in the first axle hole 101, the first axle pin 201 and the first axle hole 101 define a first rotation axis a, so that the second drag chain unit 2 can rotate around the first rotation axis a in a first rotation direction relative to a first drag chain unit 1 adjacent thereto. It is conceivable that the arrangement positions of the first axle pin 201 and the first axle hole 101 can be swapped, that is, the first axle hole is formed on the second drag chain unit 2, and the first axle pin is formed on the first drag chain unit 1.

[0053] Preferably, two first axle pins 201 can be provided, respectively located at the top and bottom of the second drag chain unit 2, and two first axle holes 101 can be provided, respectively located at the top and bottom of the first drag chain unit 1, so that the second drag chain unit 2 can rotate around the first rotation axis a in the first rotation direction relative to a first drag chain unit 1 adjacent thereto through the cooperation between the upper and lower axle pins and the axle holes.

[0054] Please see attached Fig.10 To Attachment Fig.13 The first axle pin 201 and the first axle hole 101 are respectively designed to be fan-shaped, so as to limit the rotation angle of the first drag chain unit 1 around the first rotation axis a by the first straight edge 2011 of the first axle pin 201 contacting the first straight inner wall 1011 on the corresponding side of the first axle hole 101.

[0055] Preferably, the sector angle of the first shaft pin 201 is 225°, and the sector angle of the first shaft hole 101 is 270°, so that the first shaft pin 201 can rotate in the first shaft hole 101, and the first straight edge 2011 on the left side of the first shaft pin 201 can abut against the first straight inner wall 1011 on the left side of the first shaft hole 101 to achieve horizontal left turn limit. Fig.10 and attached Fig.11 Similarly, the first straight edge 2011 on the right side of the first shaft pin 201 can abut against the first straight inner wall 1011 on the right side of the first shaft hole 101 to achieve horizontal right turn limit, as shown in the attached Fig.12 and attached Fig.13 As shown, the maximum rotation angle in the horizontal direction (ie, the first rotation direction) can be 45°.

[0056] Preferably, the first shaft pin 201 and the first shaft hole 101 may also be designed into a circular structure according to actual needs to meet the rotation function.

[0057] Please see attached Figure 6 To Attachment Fig. 9 , a second axle pin 202 is formed on the second drag chain unit 2, a second axle hole 102 is formed on the first drag chain unit 1, the second axle pin 202 is rotatably arranged in the second axle hole 102, the second axle pin 202 and the second axle hole 102 define a second rotation axis b, so that the second drag chain unit 2 can rotate around the first rotation axis a in the second rotation direction relative to another first drag chain unit 1 adjacent thereto. It is conceivable that the positions of the second axle pin and the second axle hole can be swapped, that is, the second axle hole is formed on the second drag chain unit 2, and the second axle pin is formed on the first drag chain unit 1.

[0058] Preferably, two second axle pins 202 can be provided, which are respectively located on both sides of the second drag chain unit 2, and two second axle holes 102 can be provided, which are respectively located on both sides of the first drag chain unit 1. Through the cooperation of the two axle pins and the axle holes, the second drag chain unit 2 can rotate around the first rotation axis a in the second rotation direction relative to another first drag chain unit 1 adjacent to it.

[0059] Please see attached Fig.15 The second shaft pin 202 and the second shaft hole 102 are respectively designed to be fan-shaped, so as to limit the rotation angle of the first drag chain unit 1 around the second rotation axis b by the second straight edge 2021 of the second shaft pin 202 contacting the second straight inner wall 1021 on the corresponding side of the second shaft hole 102.

[0060] Preferably, the fan-shaped angle of the second shaft pin 202 is 225°, and the fan-shaped angle of the second shaft hole 102 is 270°, so that the second shaft pin 202 can rotate in the second shaft hole 102, and the second straight edge 2021 on the upper side of the second shaft pin 202 can abut against the second straight inner wall 1021 on the upper side of the second shaft hole 102 to achieve upward rotation limit. Similarly, the second straight edge 2021 on the lower side of the second shaft pin 202 can abut against the second straight inner wall 1021 on the lower side of the second shaft hole 102 to achieve downward rotation limit, and the maximum rotation angle in the vertical direction (i.e., the second rotation direction) can be 26°.

[0061] Preferably, the second shaft pin 202 and the second shaft hole 102 can also be designed into a circular structure according to actual needs to meet the rotation function, such as the attached Figure 6 To Attachment Fig. 9 shown.

[0062] When the drag chain structure 4 is transmitted in the horizontal direction, each first drag chain unit 1 and second drag chain unit 2 of the drag chain structure 4 can be placed in a straight line state through existing mechanisms such as tracks. When the drag chain structure 4 is transmitted to a turning position, the existing mechanisms such as curved tracks can be used to provide turning guides for the drag chain structure 4, so that the adjacent first drag chain units 1 in the drag chain structure 4 can rotate relative to each other in the horizontal direction through the second drag chain units 2, as shown in the attached Fig.16 As shown, the bidirectional bending and steering function of the drag chain structure 4 is realized.

[0063] When the drag chain structure 4 is transmitted to the height difference position, the adjacent first drag chain units 1 in the drag chain structure 4 rotate relative to each other in the vertical direction through the second drag chain units 2, so as to realize the vertical transmission function of the drag chain structure 4 to climb and descend the slope. Fig.17 and attached Fig.18 shown.

[0064] The first shaft pin 201 and the second shaft pin 202 are independent of each other, and the first rotation axis is perpendicular to the second rotation axis, so that the first rotation direction is perpendicular to the second rotation direction.

[0065] The first axle pin 201 and the second axle pin 202 are arranged on the second drag chain unit 2 along the height direction and the width direction respectively, so that the first rotation direction (for example, the horizontal direction) and the second rotation direction (for example, the vertical direction) do not interfere with each other, thereby ensuring that the drag chain structure 4 can rotate independently in the horizontal direction or the vertical direction, or rotate in the horizontal and vertical directions at the same time, and can be arranged in a complex three-dimensional space with a large rotation range and high adaptability to the installation environment.

[0066] The fan-shaped angles of the first axle pin 201 and the first axle hole 101, as well as the second axle pin 202 and the second axle hole 102 can be adjusted according to actual use requirements. The two first straight edges 2011 of the first axle pin 201 can be arranged symmetrically or asymmetrically with respect to the second drag chain unit 2. The two second straight edges 2021 of the second axle pin 202 can be arranged symmetrically or asymmetrically with respect to the second drag chain unit 2, thereby adjusting the relative rotation amplitude between two adjacent first drag chain units 1, so that the drag chain structure 4 has a larger horizontal and vertical rotation angle.

[0067] Please see attached Figure 3 and attached Figure 4 A first cavity 103 is formed on the first drag chain unit 1 and penetrates the first drag chain unit 1 along a third direction, and the third direction is substantially perpendicular to the first rotation direction and the second rotation direction. The first cavity 103 is designed to accommodate at least a portion of the second drag chain unit 2, so that when the first drag chain unit 1 rotates around the first rotation axis a, the second drag chain unit 2 can rotate in the first cavity 103, and the rotation angle of the first drag chain unit 1 around the first rotation axis a is limited by the interference between the second drag chain unit 2 and the side wall of the first cavity 103 extending parallel to the first rotation axis a, and / or when the first drag chain unit 1 rotates around the second rotation axis b, the rotation angle of the first drag chain unit 1 around the second rotation axis b is limited by the interference between the second drag chain unit 2 and the side wall of the first cavity 103 extending parallel to the second rotation axis b.

[0068] Preferably, the first drag chain unit 1 and the second drag chain unit 2 can adopt a conventional hollow frame structure, and the height and width of the second drag chain unit 2 are slightly smaller than the height and width of the first drag chain unit 1, so that the two ends of the second drag chain unit 2 can be inserted into the front and rear two first drag chain units 1 to form an integral drag chain structure 4.

[0069] Since there is a large rotation angle between the first drag chain unit 1 and the second drag chain unit 2, in order to avoid the frame structure of the first drag chain unit 1 from limiting the rotation range of the second drag chain unit 2 inserted therein, preferably, avoidance recesses 104 are provided on both sides of the first drag chain unit 1 at the interference position with the second drag chain unit 2, that is, on the two side walls of the first cavity 103 extending along the first rotation axis, so as to ensure that the second drag chain unit 2 can rotate horizontally within the designed rotation range without interference, as shown in the attached figure. Figure 8 , Attachment Fig.10 and attached Fig.12 shown.

[0070] The size of the avoidance recess 104 can be adaptively adjusted according to the size of the second drag chain unit 2 and the rotation angle requirement thereof, and a pair of avoidance recesses 104 can be symmetrically or asymmetrically arranged on the first drag chain unit 1. At the same time, the avoidance recess 104 can also serve as abutment position between the second drag chain unit 2 and an adjacent first drag chain unit 1, and is used to limit the horizontal rotation range between the second drag chain unit 2 and an adjacent first drag chain unit 1.

[0071] Please see attached Figure 5 To Attachment Fig.13 , the top and bottom of the second drag chain unit 2 are respectively formed with avoidance slopes 204. When the first drag chain unit 1 rotates relative to the second drag chain unit 2 around the second rotation axis b, the side wall of the first cavity 103 extending in parallel to the second rotation axis b can collide with the avoidance slope 204 at the top of the second drag chain unit 2, which can be used to limit the upward rotation angle of the first drag chain unit 1 relative to the second drag chain unit 2, or the side wall of the first cavity 103 extending in parallel to the second rotation axis b can collide with the avoidance slope 204 at the bottom of the second drag chain unit 2, which can be used to limit the downward rotation angle of the first drag chain unit 1 relative to the second drag chain unit 2. At the same time, through the inclined surface structure design of the avoidance slope 204, the first drag chain unit 1 and the second drag chain unit 2 can have a larger relative rotation range, there is no interference during rotation, and a certain angle is formed between the first drag chain unit 1 and the second drag chain unit 2 to meet the climbing requirements at the height difference position. It is conceivable that the avoidance slope can also be set on the side wall of the first cavity 103 extending parallel to the second rotation axis b, or simultaneously set on the side wall of the first cavity 103 extending parallel to the second rotation axis b and the top and bottom of the second drag chain unit 2.

[0072] See also Fig.14 A second cavity 203 is formed on the second drag chain unit 2 along a third direction that penetrates the second drag chain unit 2, and the third direction is substantially perpendicular to the direction of the first rotation axis a and the direction of the second rotation axis b. The second cavity 203 is designed to accommodate at least a portion of the first drag chain unit 1, so that when the first drag chain unit 1 rotates around the first rotation axis a, the first drag chain unit 1 can rotate in the second cavity 203, and the rotation angle of the first drag chain unit 1 around the first rotation axis a is limited by the interference between the first drag chain unit 1 and the side wall of the second cavity 203 extending parallel to the direction of the first rotation axis a, and / or when the first drag chain unit 1 rotates around the second rotation axis b, the rotation angle of the first drag chain unit 1 around the second rotation axis b is limited by the interference between the first drag chain unit 1 and the side wall of the second cavity 203 extending parallel to the direction of the second rotation axis b.

[0073] An avoidance slope and an avoidance recess may also be provided on the second cavity 203 for the horizontal and vertical rotation limiting functions when the first drag chain unit 1 is inserted into the second drag chain unit 2, which will not be described in detail here.

[0074] The first drag chain unit 1 and the second drag chain unit 2 can achieve multi-directional rotation limiting through the cooperation of the first / second axle pin and the first / second axle hole of the fan-shaped structure, or can achieve multi-directional rotation limiting through the interference with the side wall of the cavity, or can achieve multi-directional rotation limiting through the cooperation of the first / second axle pin and the first / second axle hole and the interference with the first / second side wall of the cavity at the same time, which can be flexibly set according to actual rotation requirements.

[0075] Preferably, the first drag chain unit 1 and the second drag chain unit 2 can adopt a conventional hollow frame structure, and the height and width of the second drag chain unit 2 are slightly larger than the height and width of the first drag chain unit 1, so that the front and rear two first drag chain units 1 can be inserted into the second cavity 203 of the middle second drag chain unit 2 to form an integral drag chain structure 4.

[0076] When the second drag chain unit 2 is inserted into the first drag chain unit 1, the first axle pin 201 is located on the top outer wall and the bottom outer wall of the second drag chain unit 2, and is used to be rotatably connected with the first axle hole 101 at the top and bottom of the first drag chain unit 1; the second axle pin 202 is located on the outer walls on both sides of the second drag chain unit 2, and is used to be rotatably connected with the second axle holes 102 on both sides of the first drag chain unit 1. When the first drag chain unit 1 is inserted into the second drag chain unit 2, the first axle pin 201 is located on the top inner wall and the bottom inner wall of the second drag chain unit 2, and is used to be rotatably connected with the first axle hole 101 at the top and bottom of the first drag chain unit 1; the second axle pin 202 is located on the inner walls on both sides of the second drag chain unit 2, and is used to be rotatably connected with the second axle holes 102 on both sides of the first drag chain unit 1.

[0077] The first drag chain unit 1 and the second drag chain unit 2 are connected through the cavity, that is, the first cavity 103 and the second cavity 203 are connected, so that the wiring harness 6 can pass through the first drag chain unit 1 and the second drag chain unit 2 through the cavity. Fig.25 As shown, the wiring harness 6 is passed through the drag chain structure 4 .

[0078] When the second drag chain unit 2 is plugged into the first drag chain unit 1, or the first drag chain unit 1 is plugged into the second drag chain unit 2, the first cavity 103 and the second cavity 203 are connected to form an integral cavity structure, and the size of the cavity structure is larger than the cross-sectional size of the wiring harness 6 to allow the wiring harness 6 to pass through.

[0079] Please see attached Fig.19 To Attachment Fig.21A slide rail comprises a slide rail 3 and the multi-directional drag chain structure 4. The drag chain structure 4 cooperates with the slide rail 3 to provide a rotation guide for the drag chain structure 4 through the slide rail 3.

[0080] Please see attached Fig.21 and attached Fig. 22 The slide rail 3 is formed with a guide surface 301, which is used to guide at least one first drag chain unit 1 to rotate around the second rotation axis b or the first rotation axis a, so that the drag chain structure 4 generates a height difference or an angle difference at the front and rear positions of the guide surface 301.

[0081] By setting the guide surface 301, the step-shaped mutation at the height difference position can be avoided to cause jamming and interference to the transmission of the drag chain structure 4; the inclined angle of the guide surface 301 can be adaptively adjusted according to the height difference, the rotation amplitude between the first drag chain unit 1 and the second drag chain unit 2, etc.

[0082] According to the actual assembly structure, the second rotation axis b and the first rotation axis a are in the horizontal direction, the drag chain structure 4 moves in and out of the slide rail 3 upward or downward, and the first drag chain unit 1 rotates around the second rotation axis b and the first rotation axis a, thereby enabling the drag chain structure 4 to produce a height difference in the front and rear positions of the guide surface 301.

[0083] Preferably, the guide surface 301 can be set at the end of the slide rail 3, and is used for guiding the height change when the drag chain structure 4 enters or slides out of the slide rail 3. The guide surface 301 can also be used inside the slide rail 3 to guide the drag chain structure 4 when there is a need to change the height when sliding in the slide rail 3, thereby ensuring smooth transmission of the drag chain structure 4 at any height difference position without generating abnormal noise.

[0084] The guide surface 301 can also be used to guide the drag chain structure 4 when it enters and exits other components such as the wiring harness box 5, which will not be described in detail here.

[0085] Please see attached Fig.23 and attached Fig.24 The slide rail 3 is a curved slide rail, and at least one first drag chain unit 1 in the drag chain structure 4 entering the slide rail 3 rotates around the first rotation axis a and / or the second rotation axis b.

[0086] The form of the slide rail 3 can be adaptively selected according to the actual layout requirements. For example, a straight slide rail is usually arranged on the floor of the car, and a curved slide rail is usually arranged on the roof of the car. Fig.23 and attached Fig.24 When the linear slide rail is arranged at a height difference position, the transmission of the drag chain structure 4 can be guided by the guide surface 301; the curved slide rail itself has a height change, that is, it has the guiding function of the guide surface 301, and the guide surface 301 may not be provided according to actual conditions.

[0087] Preferably, the guide surface 301 is an inclined surface or a curved surface.

[0088] The structural form of the guide surface 301 can be adaptively set according to actual installation requirements, so that it can ensure smooth transmission of the drag chain structure 4 at the height difference position.

[0089] For preference, please see the attached Fig. 20 To Attachment Fig. 22 A notch 302 may be formed on the slide rail 3 , and the notch 302 is located at the end of the guide surface 301 , so that the drag chain structure 4 slides onto the guide surface 301 through the notch 302 .

[0090] When the guide surface 301 is located at the end of the slide rail 3, since the slide rail 3 has a certain thickness, the setting of the notch 302 can prevent the thickness of the slide rail 3 itself from interfering with the transmission of the drag chain structure 4, ensuring that the drag chain structure 4 can smoothly enter and exit the slide rail 3 without generating abnormal noise.

[0091] Please see attached Figure 2 To Attachment Fig. 22 , the transmission process and working principle of the utility model are:

[0092] The slide rail 3 is arranged according to the actual application scenario, the drag chain structure 4 is arranged in the slide rail 3, and the wiring harness 6 passes through the first cavity 103 and the second cavity 203 of the drag chain structure 4, as shown in the attached Fig.25 As shown, the slide rail 3, the drag chain structure 4 and the wiring harness 6 are arranged using conventional processes, which will not be described in detail here.

[0093] During the horizontal transmission process: if the first axle pin 201 is relatively stationary in the first axle hole 101, the horizontal angle between the previous first drag chain unit 1 and the second drag chain unit 2 remains unchanged. If the first axle pin 201 rotates in the first axle hole 101, the second drag chain unit 2 rotates horizontally relative to the previous first drag chain unit 1; since the next first drag chain unit 1 and the second drag chain unit 2 are vertically rotatably connected through the second axle pin 202 and the second axle hole 102, the next first drag chain unit 1 can rotate horizontally synchronously with the second drag chain unit 2, thereby realizing the relative horizontal rotation of the two adjacent first drag chain units 1; and the next first drag chain unit 1 serves as the previous first drag chain unit 1 of the next first drag chain unit 1, and is transmitted backward in sequence, thereby meeting the left or right steering requirements of the drag chain structure 4.

[0094] During the horizontal leftward rotation, the first straight edge 2011 on the left side of the first shaft pin 201 can abut against the first straight inner wall 1011 on the left side of the first shaft hole 101 to achieve horizontal leftward rotation limit. During the horizontal rightward rotation, the first straight edge 2011 on the right side of the first shaft pin 201 can abut against the first straight inner wall 1011 on the right side of the first shaft hole 101 to achieve horizontal rightward rotation limit.

[0095] At the same time, the avoidance recesses 104 on both sides of the first drag chain unit 1 can also provide limit for the horizontal leftward or horizontal rightward rotation of the second drag chain unit 2 .

[0096] During the vertical transmission process: if the second axle pin 202 does not rotate, the vertical angle between the next first drag chain unit 1 and the second drag chain unit 2 remains unchanged. If the second axle pin 202 rotates in the second axle hole 102, the next first drag chain unit 1 rotates vertically relative to the second drag chain unit 2; since the previous first drag chain unit 1 and the second drag chain unit 2 are horizontally rotatably connected via the first axle pin 201 and the first axle hole 102, the previous first drag chain unit 1 can rotate vertically synchronously with the second drag chain unit 2, thereby realizing the relative vertical rotation of the two adjacent first drag chain units 1; and the next first drag chain unit 1 serves as the previous first drag chain unit 1 of the next first drag chain unit 1, and is sequentially transmitted backwards, thereby satisfying the upward or downward steering requirements of the drag chain structure 4.

[0097] During the upward rotation process, the second straight edge 2021 on the upper side of the second shaft pin 202 can abut against the second straight inner wall 1021 on the upper side of the second shaft hole 102 to achieve upward rotation limit. During the downward rotation process, the second straight edge 2021 on the lower side of the second shaft pin 202 can abut against the second straight inner wall 1021 on the lower side of the second shaft hole 102 to achieve downward rotation limit.

[0098] At the same time, the avoidance slope 204 at the top or bottom of the second drag chain unit 2 can also abut against the top or bottom of the first drag chain unit 1 to achieve upward or downward rotation limitation.

[0099] In actual use, the horizontal transmission process and the vertical transmission process are relatively independent and can be performed independently or synchronously by the first axle pin 201 and the second axle pin 202 to achieve unidirectional or multi-directional rotation of the drag chain structure 4.

[0100] The utility model is described in detail above with reference to the accompanying drawings and embodiments. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. A multi-directional drag chain structure, characterized in that: It comprises a plurality of first drag chain units and a plurality of second drag chain units; the second drag chain unit is rotatably connected between two adjacent first drag chain units, so that the two adjacent first drag chain units can rotate in one direction or in multiple directions through the second drag chain unit.

2. The multi-directional drag chain structure according to claim 1, characterized in that: The second drag chain unit can be rotatably connected to one of the two adjacent first drag chain units around the first rotation axis; the second drag chain unit can also be rotatably connected to the other of the two adjacent first drag chain units around the second rotation axis.

3. The multi-directional drag chain structure according to claim 2, characterized in that: A first axle pin is arranged on one of the first drag chain unit and the second drag chain unit, a first axle hole is arranged on the other of the first drag chain unit and the second drag chain unit, the first axle pin is rotatably arranged in the first axle hole, and the first axle pin and the first axle hole define a first rotation axis.

4. The multi-directional drag chain structure according to claim 3, characterized in that: The first shaft pin and the first shaft hole are respectively designed to be fan-shaped, so that the rotation angle of the first drag chain unit around the first rotation axis is limited by the first straight side of the first shaft pin abutting against the first straight inner wall of the corresponding side of the first shaft hole.

5. The multi-directional drag chain structure according to claim 3, characterized in that: A second axial hole is further provided on one of the first drag chain unit and the second drag chain unit, and a second axial pin is further provided on the other of the first drag chain unit and the second drag chain unit. The second axial pin is rotatably provided in the second axial hole, and the second axial pin and the second axial hole define a second rotation axis.

6. The multi-directional drag chain structure according to claim 5, characterized in that: The second axle pin and the second axle hole are respectively designed to be fan-shaped, so that the rotation angle of the first drag chain unit around the second rotation axis is limited by the second straight side of the second axle pin abutting against the second straight inner wall of the corresponding side of the second axle hole.

7. The multi-directional drag chain structure according to claim 2, characterized in that: The first drag chain unit is formed with a first cavity that penetrates the first drag chain unit along a third direction, and the first cavity is designed to accommodate at least a portion of the second drag chain unit, so that when the first drag chain unit rotates around the first rotation axis, the second drag chain unit can rotate in the first cavity, and the rotation angle of the first drag chain unit around the first rotation axis is limited by the interference between the second drag chain unit and the side wall of the first cavity extending parallel to the first rotation axis, and / or when the first drag chain unit rotates around the second rotation axis, the rotation angle of the first drag chain unit around the second rotation axis is limited by the interference between the second drag chain unit and the side wall of the first cavity extending parallel to the second rotation axis.

8. The multi-directional drag chain structure according to claim 2, characterized in that: The second drag chain unit is formed with a second cavity that penetrates the second drag chain unit along a third direction, and the second cavity is designed to accommodate at least a portion of the first drag chain unit, so that when the first drag chain unit rotates around the first rotation axis, the first drag chain unit can rotate in the second cavity, and the rotation angle of the first drag chain unit around the first rotation axis is limited by the interference between the first drag chain unit and the side wall of the second cavity extending parallel to the first rotation axis, and / or when the first drag chain unit rotates around the second rotation axis, the rotation angle of the first drag chain unit around the second rotation axis is limited by the interference between the first drag chain unit and the side wall of the second cavity extending parallel to the second rotation axis.

9. The multi-directional drag chain structure according to claim 7 or 8, characterized in that: The first drag chain unit and the second drag chain unit are connected through the first cavity and the second cavity, so that the wiring harness can pass through the first drag chain unit and the second drag chain unit.

10. A slide rail, characterized in that: The invention comprises a slide rail and a multi-directional drag chain structure as described in any one of claims 1 to 9.

11. The slide rail according to claim 10, characterized in that: The slide rail is formed with a guide surface, and the guide surface is used to guide at least one first drag chain unit to rotate around the second rotation axis or the first rotation axis.

12. The slide rail according to claim 10, characterized in that: The slide rail is a curved slide rail, and at least one first drag chain unit in the drag chain structure entering the slide rail rotates around the first rotation axis and / or the second rotation axis.

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