Drag chain assembly capable of supporting cable

Abstract

The utility model discloses a drag chain assembly capable of supporting a cable, the drag chain assembly capable of supporting the cable comprises a plurality of upper connecting units, a plurality of lower connecting units and an elastic unit, the upper connecting units are uniformly arranged at intervals, and each upper connecting unit extends in the longitudinal direction to form a through groove; each lower connecting unit comprises an outer-layer component and an inner-layer component, the outer-layer component is rotatably connected between the two adjacent upper connecting units, at least part of the outer-layer component is contained in the through groove, the outer-layer component further extends in the longitudinal direction to form a groove, a positioning part is formed on the inner wall where the groove is formed, and the inner-layer component is located in the positioning part. The inner layer component is connected to the inner wall forming the groove so as to abut against the positioning part, the positioning part penetrates through the elastic unit, the elastic unit is located between the outer layer component and the inner layer component, and therefore when the outer layer component rotates, the elastic unit is arranged to be used for limiting the rotating angle of the outer layer component.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tow chain, concretely relates to the tow chain assembly of cable support. BACKGROUND

[0002] The mechanical arm is the automation mechanical device that is more widely used in the technical field of mechanical man, which can receive instructions and accurately position to a certain point on three-dimensional or two-dimensional space to work. The existing part of mechanical arm often drags and drives cable part to move in the running process, in order to prevent cable part from being damaged by excessive dragging of mechanical arm, therefore, the restraint degree of cable part easy to be dragged position is more relaxed.

[0003] However, the part of cable with the restraint degree more relaxed can easily collapse under the action of gravity, which can make cable part be clamped into the gap formed by the joint of mechanical arm, and then interfere with the operation of mechanical arm. SUMMARY

[0004] To solve the above technical problems and achieve at least one advantage of the utility model, the utility model provides the tow chain assembly of cable support, the tow chain assembly of cable support includes:

[0005] A plurality of upper connecting units, the upper connecting unit is evenly and interval arranged, and each upper connecting unit extends along the longitudinal direction to form a through slot;

[0006] A plurality of lower connecting units, each lower connecting unit includes an outer member and an inner member, wherein the outer member is rotatably connected between two adjacent upper connecting units, and at least part is received in the through slot, and the outer member also extends along the longitudinal direction to form a recess, and a positioning portion is formed on the inner wall forming the recess, the inner member is connected to the inner wall forming the recess, and is arranged to abut against the positioning portion;

[0007] A resilient unit, the resilient unit is passed through the positioning portion, and is located between the outer member and the inner member, so that when the outer member rotates, the resilient unit is arranged to limit the rotation angle of the outer member.

[0008] According to an embodiment of the utility model, the upper connecting unit has a horizontal wall and two vertical walls, wherein the vertical wall is arranged to extend along the vertical direction from the two sides of the horizontal wall, and the vertical wall extends along the longitudinal direction to form the through slot.

[0009] According to the utility model one embodiment, the outer member has bottom wall and two side walls, wherein the positioning part is arranged to be formed on the bottom wall, the side wall extends from the two sides of the bottom wall in the vertical direction and forms the groove, and the elastic unit is arranged to be pressed on the bottom wall by the inner member.

[0010] According to the utility model one embodiment, the upper connecting unit is provided with two connecting through holes which pass through each vertical wall and communicate with the through groove, and the outer member is provided with two connecting parts on each side wall, and each connecting part is arranged to be connected with one port of the connecting through hole.

[0011] According to the utility model one embodiment, the inner member is provided with at least one clamping part near the inner wall of the outer member, and the outer member is correspondingly provided with the same number of connecting holes as the clamping part on the inner wall, and each connecting hole is arranged to be clamped with one clamping part.

[0012] According to the utility model one embodiment, the upper connecting unit is provided with a clamping window in the middle, the clamping window communicates with the through groove, and the inner member is provided with a protrusion at each end, so that when the outer member of the upper connecting unit and the lower connecting unit is connected, the protrusion is arranged to be at least partially located in the clamping window.

[0013] According to the utility model one embodiment, the inner member includes a first part and a second part, wherein the first part is detachably connected to the recess of the outer member and abuts against the positioning part, and the first part further forms a receiving groove for connecting the second part.

[0014] According to the utility model one embodiment, the first part is passed through the positioning part of the outer member, and the positioning part is at least partially located in the receiving groove.

[0015] According to the utility model one embodiment, the inner wall of the outer member forms two connecting holes which communicate with the recess, and the outer wall of the first part forms the same number of clamping parts as the connecting holes, each clamping part is arranged to be clamped with one connecting hole, so that the first part can be connected to the outer member.

[0016] According to the utility model one embodiment, the upper connecting unit is provided with a clamping window which communicates with the through groove in the middle, and the second part extends to form a protrusion at each end in the direction close to the inner wall of the upper connecting unit, so that when the outer member of the upper connecting unit and the lower connecting unit is connected, the protrusion is arranged to be at least partially located in the clamping window. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 A perspective view of the cable supporting drag chain assembly is shown.

[0018] Fig. 2 A structural schematic view of the upper connecting unit in the cable supporting drag chain assembly is shown.

[0019] Fig. 3 A structural schematic view of the connection between the lower connecting unit and the elastic unit in the cable supporting drag chain assembly is shown.

[0020] Fig. 4 A structural schematic view of the outer member in the lower connecting unit is shown.

[0021] Fig. 5 A structural schematic view of the inner member in the lower connecting unit is shown.

[0022] Fig. 6 A structural schematic view of the inner member in another embodiment of the lower connecting unit is shown. DETAILED DESCRIPTION

[0023] The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments described below are only examples of the present application and the other obvious variants can be thought by those skilled in the art. The basic principles of the present application defined in the following description can be applied to other embodiments, variants, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0024] Those skilled in the art should understand that in the disclosure of the present application, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0025] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation of the number.

[0026] REFERENCE Figs. 1 to 4, the cable-supporting drag chain assembly according to a preferred embodiment of the utility model will be described in detail below, the cable-supporting drag chain assembly includes multiple upper connecting units 10, multiple lower connecting units 20 and a elastic unit 30, wherein the upper connecting unit 10 is evenly and spacedly arranged, and each upper connecting unit 10 extends along the longitudinal direction to form a through slot 101.

[0027] Preferably, the through slot 101 is arranged through both ends of the upper connecting unit 10.

[0028] In one embodiment, the upper connecting unit 10 has a horizontal wall 11 and two vertical walls 12, wherein the vertical wall 12 is arranged to extend along the vertical direction from both sides of the horizontal wall 11, and the vertical wall 12 extends along the longitudinal direction to form the through slot 101.

[0029] Each lower connecting unit 20 is connected between two adjacent upper connecting units 10, and is at least partially accommodated in the through slot 101, and each lower connecting unit 20 is arranged to be a pivot point with the upper connecting unit 10, and can rotate a predetermined angle about the pivot point.

[0030] In other words, a single upper connecting unit 10 and a single lower connecting unit 20 form a connecting joint, and each connecting joint forms a strip-shaped assembly in a head-to-tail manner, and the strip-shaped assembly can be in a predetermined curved state as a whole after each lower connecting unit 20 rotates a predetermined angle.

[0031] Specifically, each lower connecting unit 20 includes an outer member 21 and an inner member 22, wherein the outer member 21 is rotatably connected to the inner wall of the through slot 101, and the outer member 21 further extends along the longitudinal direction to form a recess 2101 to accommodate the inner member 22, and further, the outer member 21 forms a positioning portion 211 on the inner wall of the recess 2101 to pass through the elastic unit 30. The inner member 22 is connected to the inner wall of the recess 2101 of the outer member 21, and the inner member 22 is arranged to be able to abut against the part of the positioning portion 211 passing through the elastic unit 30.

[0032] The elastic unit 30 is arranged between the outer member 21 and the inner member 22, and at least part of the elastic unit 30 is positioned by the positioning portion 211, so that when the outer member 21 rotates, the elastic unit 30 is arranged to limit the rotation angle of each outer member 21.

[0033] As can be understood by those skilled in the art, when the cable gravity acts on the whole of the lower connecting unit 20, the outer member 21 of the lower connecting unit 20 is affected to rotate around the connection with the upper connecting unit 10, and since the elastic unit 30 is positioned at least partially by each positioning portion 211, the outer member 21 is gradually limited in the rotation angle by the elastic unit 30 during the rotation, and further, the bending amplitude of the whole of the cable-supportable drag chain assembly is limited.

[0034] In this way, the whole of the cable-supportable drag chain assembly can complete the operation of supporting the cable, so that the amplitude of the cable collapse caused by the gravity is reduced, and thus the collapse amplitude of the position where the cable is relatively loose is limited, which makes it difficult for the cable to be stuck in the joint of the robot arm and does not interfere with the operation of the robot arm.

[0035] In an embodiment, the outer member 21 has a bottom wall 212 and two side walls 213, wherein the positioning portion 211 is arranged to be formed on the bottom wall 212. The side wall 213 extends in the vertical direction from both sides of the bottom wall 212, and the side wall 213 extends in the longitudinal direction to form the groove 2101. Specifically, the elastic unit 30 is arranged to be pressed against the bottom wall 212 by the inner member 22.

[0036] In a preferred embodiment, as shown in Figs. 1 to 4 Correspondingly, the outer member 21 is arranged with two connecting portions 214 on each of the side walls 213, and each of the connecting portions 214 is arranged to be connected with one port of one of the connecting through holes 102, so that the upper connecting unit 10 and the outer member 21 are connected.

[0037] It should be noted that the connection mode between the upper connecting unit 10 and the outer member 21 is not unique. For example, in a variant embodiment, the upper connecting unit 10 forms two pairs of abutting portions on the inner wall of the through groove 101, and two abutting portions in each pair of abutting portions are arranged opposite and spaced apart on the two vertical walls 12. The outer wall of the outer member 21 is correspondingly arranged with the same number of abutting holes as the abutting portions, and each of the abutting holes is arranged to be connected with one of the abutting portions, so that the upper connecting unit 10 and the outer member 21 can be connected.

[0038] Specifically, in an embodiment, as shown in Fig. 6As shown, the inner layer member 22 is provided with at least one clamping portion 221 at a position close to the inner wall of the outer layer member 21, and the outer layer member 21 is correspondingly provided with the same number of connecting holes 2102 as the clamping portions 221 on the inner wall, and each connecting hole 2102 is arranged to clamp with one clamping portion 221, so that the outer layer member 21 and the inner layer member 22 are connected.

[0039] It should be noted that the inner layer member 22 installed in the groove 2101 is used to prevent the elastic unit 30 from being separated from the positioning portion 211 along the forming direction of the positioning portion 211 when being driven by the rotation of the outer layer member 21, so as to prevent the rotation angle of the outer layer member 21 from being too large to be limited by the elastic unit 30. That is, when the elastic unit 30 can no longer limit the rotation angle of the outer layer member 21, the outer layer member 21 will rotate beyond the predetermined angle under the influence of the cable gravity, which may hinder the operation of the mechanical arm as a whole.

[0040] Preferably, the positioning portion 211 of the outer layer member 21 is arranged to penetrate at least partially into the inner layer member 22, so that the elastic unit 30 can be stably positioned between the outer layer member 21 and the inner layer member 22.

[0041] It is worth mentioning that in a variant embodiment, the inner layer member 22 is arranged to penetrate at least partially through the outer layer member 21 and the elastic unit 30 at the same time when being connected with the outer layer member 21, so that the elastic unit 30 is positioned.

[0042] In a preferred embodiment, the upper connecting unit 10 is provided with a clamping window 103 in the middle portion, and the clamping window 103 is communicated with the through slot 101. Correspondingly, the inner layer member 22 is provided with a protrusion 222 at each end portion, so that when the upper connecting unit 10 and the outer layer member 21 of the lower connecting unit 20 are connected, the protrusion 222 is arranged to be at least partially located in the clamping window 103.

[0043] It can be understood that when it is necessary to rotate the outer layer member 21 by a predetermined angle, the inner layer member 22 is driven to follow the outer layer member 21, so that the protrusion 222 moves in the clamping window 103 until the protrusion 222 abuts against the inner wall forming the clamping window 103, at this time, the inner layer member 22 is difficult to be driven, and the outer layer member 21 is difficult to continue to rotate, so that the rotation angle of the outer layer member 21 is limited, and the rotation angle of the lower connecting unit 20 relative to the upper connecting unit 10 is limited, so that the bending amplitude of the cable supporting drag chain assembly as a whole under the influence of the cable gravity is reduced.

[0044] Specifically, in another embodiment, as shown in Fig. 5 the inner layer member 22 comprises a first part 221 and a second part 222, wherein the first part 221 is detachably connected to the groove 2101 of the outer layer member 21 and abuts against the positioning portion 211, and the first part 221 further forms a receiving groove 22101 for connecting the second part 222.

[0045] Preferably, the first part 221 is penetrated by the positioning portion 211 of the outer layer member 21, and the positioning portion 211 is at least partially located in the receiving groove 22101.

[0046] It should be noted that the first part 221 is abutted against the positioning portion 211 so that the first part 221 is located on the path of the elastic unit 30 moving on the positioning portion 211, so that the elastic unit 30 is blocked and difficult to be separated from the positioning portion 211 along the forming direction of the positioning portion 211.

[0047] In a preferred embodiment, the inner wall of the outer layer member 21 forms two connecting holes 2102 communicating with the groove 2101. Correspondingly, the outer wall of the first part 221 forms the same number of clamping portions 2211 as the connecting holes 2102, each of the clamping portions 2211 is arranged to be clamped with one of the connecting holes 2102, so that the first part 221 can be connected to the outer layer member 21.

[0048] Preferably, the outer wall of the second part 222 has a connecting structure 2221 arranged to penetrate the first part 221 to connect with the outer layer member 21. In an embodiment, the connecting structure 2221 is arranged as a buckle, so that the second part 222 can be clamped with the outer layer member 21.

[0049] In an embodiment, the upper connecting unit 10 is provided with a clamping window 103 communicating with the through groove 101 in the middle. Correspondingly, the second part 222 extends to form a protrusion 2222 in the direction of approaching the inner wall of the upper connecting unit 10 at both ends, and when the upper connecting unit 10 and the outer layer member 21 of the lower connecting unit 20 are connected, the protrusion 2222 is arranged to be at least partially located in the clamping window 103.

[0050] It can be understood that when the single lower connecting unit 20 rotates as a whole along the rotation point of the rotating shaft, the protrusion 2222 follows the rotation of the lower connecting unit 20 and gradually abuts against the inner wall forming the clamping window 103, thereby limiting the rotation angle of the lower connecting unit 20 as a whole. Thus, the extent of the cable-supportable cable drag chain assembly being bent under the influence of the cable gravity is further limited, so that the cable as a whole can be supported.

[0051] Preferably, the elastic unit 30 is implemented as a spring sheet.

[0052] Those skilled in the art will understand that the above description and the embodiments of the utility model shown in the drawings are only examples and do not limit the utility model. The advantages of the utility model have been fully and effectively realized. The function and structural principle of the utility model have been shown and explained in the embodiments, and the embodiments of the utility model can be any deformation or modification without departing from the principle.

Claims

1. A cable chain assembly capable of supporting a cable, characterized by, The cable-supportable drag chain assembly comprises: a plurality of upper connecting units, which are uniformly and spacedly arranged, and each of which extends along a longitudinal direction to form a through slot; a plurality of lower connecting units, each of which comprises an outer member and an inner member, wherein the outer member is rotatably connected between two adjacent upper connecting units, and is at least partially received in the through slot, and the outer member further extends along a longitudinal direction to form a recess, and a positioning portion is formed on an inner wall of the recess, and the inner member is connected to the inner wall of the recess and is arranged to abut against the positioning portion; a resilient unit, which is passed through the positioning portion and is located between the outer member and the inner member, so that when the outer member rotates, the resilient unit is arranged to limit the rotation angle of the outer member.

2. The cable-supporting cable tray assembly of claim 1, wherein, The upper connecting unit has a horizontal wall and two vertical walls, wherein the vertical walls are arranged to extend along a vertical direction from both sides of the horizontal wall, and the vertical walls extend along a longitudinal direction to form the through slot.

3. The cable-supporting cable tray assembly of claim 2, wherein, The outer member has a bottom wall and two side walls, wherein the positioning portion is arranged to be formed on the bottom wall, the side walls extend along a vertical direction from both sides of the bottom wall, and the side walls extend along a longitudinal direction to form the recess, and the resilient unit is arranged to be pressed against the bottom wall by the inner member.

4. The cable-supporting cable tray assembly of claim 3, wherein, The upper connecting unit is provided with two connecting through holes passing through each of the vertical walls and communicating with the through slot, and the outer member is provided with two connecting portions on each of the side walls, and each of the connecting portions is arranged to be connected with one port of one of the connecting through holes.

5. The cable-supporting cable tray assembly of claim 4, wherein, The inner member is provided with at least one clamping portion near the inner wall of the outer member, and the outer member is correspondingly provided with the same number of connecting holes as the clamping portions on the inner wall, and each of the connecting holes is arranged to be clamped with one of the clamping portions.

6. The cable-supporting cable tray assembly of claim 5, wherein, The upper connecting unit is provided with a clamping window in the middle portion, which communicates with the through slot, and the inner member is provided with a protrusion at each of the two end portions, so that when the upper connecting unit is connected with the outer member of the lower connecting unit, the protrusion is arranged to be at least partially located in the clamping window.

7. The cable-supporting cable tray assembly of claim 4, wherein, The inner member comprises a first part and a second part, wherein the first part is detachably connected to the recess of the outer member and abuts against the positioning portion, and the first part further forms a receiving groove for connecting the second part.

8. The cable-supporting cable tray assembly of claim 7, wherein, The first part is passed through the positioning portion of the outer member, and the positioning portion is at least partially located in the receiving groove.

9. The cable-supporting cable tray assembly of claim 7, wherein, The inner wall of the outer member forms two connecting holes communicating with the recess, and the outer wall of the first part forms the same number of clamping portions as the connecting holes, and each of the clamping portions is arranged to be clamped with one of the connecting holes, so that the first part can be connected to the outer member.

10. The cable-supporting towrope assembly of claim 9, wherein, The upper connecting unit is provided with a clamping position window in communication with the through slot, and the second part extends to form a protrusion in the direction of approaching the inner wall of the upper connecting unit at two ends, and when the outer layer member of the upper connecting unit and the lower connecting unit are connected, the protrusion is arranged to be at least partially located in the clamping position window.

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