Cable suspending device

Abstract

To reduce interference with an object, associated with sagging of a cable.SOLUTION: When a cable 30 extends, a cable suspending device 20 moves along a rail 10, and a cable holding part 25 of the cable suspending device 20 moves from a stopper 26a side toward the rail 10 side on a guide rail 24, thereby the cable suspending device 20 can extend the cable 30. When the cable 30 contracts, the cable suspending device 20 moves along the rail 10, and the cable holding part 25 of the cable suspending device 20 moves from the rail 10 side toward the stopper 26a side on the guide rail 24, thereby the cable suspending device can accommodate the cable 30 without allowing the cable to sag downward.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a cable suspension device that can reduce interference with objects caused by a dangling cable. [Background technology]

[0002] Conventionally, when assembling or transporting a structure such as a vehicle frame, there is a process that uses electric cables such as a crane or a nut runner, etc. For this reason, a technique of supporting multiple cables on a carrier can be used to adjust the cable length (see, for example, Patent Document 1).

[0003] This makes it possible to attach a plurality of hangers that are movable on the rails and have each hanger support a cable, thereby enabling the cable to be contracted or extended depending on the situation. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2002-087756 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the above-mentioned conventional technology has a problem in that the cable supported by the two hangers sags down. If the cable sags down, it may interfere with an object located below the cable, which may lead to an unexpected accident.

[0006] The present invention has been made to solve the problems (issues) associated with the above-mentioned conventional technology, and aims to provide a cable suspension device that can reduce interference with objects caused by the dangling cable. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the object, the present invention provides a cable suspension device that is suspended from a specified rail and is configured to be able to move along the rail while holding a cable, the cable suspension device comprising a cable hanger that prevents the cable from falling, a cable holding part that prevents the cable from sagging due to shortening of the distance between other cable suspension devices, and a guide rail that moves the cable holding part in a direction perpendicular to the direction of the rail.

[0008] In the present invention, in the above-mentioned invention, the cable holder further includes a stopper provided at an end of the guide rail for preventing the cable holder from falling off.

[0009] In the present invention, in the above-mentioned invention, the guide rail is a flat plate with the stopper positioned below a lower end of the rail, facilitating movement of the cable holding portion in the direction of the stopper.

[0010] In the present invention, in the above-mentioned invention, the guide rail has an elastic body provided between the stopper and the cable holding portion, which promotes movement of the cable holding portion in the direction of the stopper.

[0011] In the present invention, in the above-mentioned invention, the guide rail is provided with a rotation prevention member that prevents rotation of the cable holding portion. Effect of the Invention

[0012] According to the present invention, it is possible to reduce interference with objects caused by a sagging cable. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a diagram showing an overview of a cable suspension device according to an embodiment. [Diagram 2] FIG. 2 is an explanatory diagram (part 1) for explaining the cable extension operation of the cable suspension device shown in FIG. [Diagram 3]FIG. 3 is an explanatory diagram (part 2) for explaining the cable extension operation of the cable suspension device shown in FIG. [Figure 4] FIG. 4 is an explanatory diagram illustrating the operation of contracting the cable of the cable suspension device shown in FIG. [Diagram 5] FIG. 5 is a diagram showing an overview of a cable suspension device according to the first modification. [Figure 6] FIG. 6 is a diagram showing an overview of a cable suspension device according to the second modification. [Figure 7] FIG. 7 is a diagram showing an overview of a cable suspension device according to the third modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a cable suspension device according to the present invention will be described in detail with reference to the drawings.

[0015] [Embodiment 1] First, an overview of a cable suspension device 20 according to the first embodiment will be described. Fig. 1 is a diagram showing an overview of a cable suspension device 20 according to the embodiment. As shown in Fig. 1(a), in a conventional cable suspension device, a plurality of cable hangers 2 are suspended from a predetermined rail 1. A cable 3 is passed through the cable hangers 2, and the cable 3 contracts or expands in response to the movement of the cable hangers 2.

[0016] In the case of conventional cable suspension devices, when the cable 3 is contracted, the contracted cable 3 hangs down so that it extends below the cable hanger 2. Therefore, for example, if a robot arm for assembly or the like is installed below the cable suspension device, there is a possibility that the hanging cable 3 will interfere with the robot arm.

[0017] 1(b), cable suspension device 20 according to the present invention has cable hanger 21, upper pulley 22, lower pulley 23 (not shown), guide rail 24, cable holder 25, and stopper 26. Cable hanger 21 holds cable 30 by passing it through the center of cable hanger 21. Here, cable 30 is a cable made of a highly rigid material.

[0018] In addition, the cable hanger 21, guide rail 24, cable holding portion 25, and stopper 26 are attached to a specific rail 10 by an upper pulley 22 and a lower pulley 23 (not shown), and are arranged to be movable along the rail 10 by the upper pulley 22 and the lower pulley 23 (not shown).

[0019] Guide rail 24 is provided perpendicular to the direction of rail 10, and cable hanger 21, cable holder 25 (described later), and stopper 26 are attached to guide rail 24. Cable holder 25 is a holder that holds cable 30 so that it does not hang down below rail 10, and is provided movably on guide rail 24. Stopper 26 is provided at the end of guide rail 24 to prevent cable holder 25 from falling off.

[0020] <Operation when cable is extended by 30> Next, the operation of the cable suspension device 20 when the cable 30 is extended will be described. Figures 2 and 3 are explanatory diagrams for explaining the cable extension operation of the cable suspension device 20 shown in Figure 1. As shown in Figure 2(a), a plurality of cable suspension devices 20a, 20b, and 20c are suspended from the rail 10. When the cable 30 is contracted, the cable 30 penetrates the cable hanger 21a and the cable holder 25a provided on the upper part of the guide rail 24a. In this state, the cable holder 25a is located close to the stopper 26a provided on the end of the guide rail 24a.

[0021] The cable 30 then passes through the cable hanger 21b, and then passes through the cable holder 25b provided on the upper part of the guide rail 24b. In this state, the cable holder 25b is located close to the stopper 26b provided on the end of the guide rail 24b. The cable 30 further passes through the cable hanger 21c, and then passes through the cable holder 25c provided on the upper part of the guide rail 24c. In this state, the cable holder 25c is located close to the stopper 26c provided on the end of the guide rail 24c.

[0022] When the cable 30 is extended, as shown in Fig. 2(b), the cable suspension device 20a moves along the rail 10 in the -Y-axis direction. When the cable suspension device 20a moves in the -Y-axis direction, the cable holding part 25a moves in the -X-axis direction on the guide rail 24a, and the cable 30 is extended.

[0023] 3(a), when the cable 30 is further extended, the cable suspension device 20a moves further in the -Y-axis direction. When the cable suspension device 20a moves further in the -Y-axis direction, the cable holding part 25a moves further in the -X-axis direction on the guide rail 24a, and the cable 30 is extended.

[0024] Then, as shown in FIG. 3(b), when the cable 30 is to be further extended, the cable suspension device 20b moves further in the -Y-axis direction, and accordingly, the cable holding portion 25b moves along the guide rail 24b in the -X-axis direction, so that the cable 30 is extended.

[0025] <Contraction of cable 30> Next, an operation of the cable suspension device 20 when contracting the cable 30 will be described. Figure 4 is an explanatory diagram illustrating the operation of contracting the cable of the cable suspension device shown in Figure 1. As shown in Figure 4(a), in a state in which the cable 30 is extended, the cable suspension device 20a and the cable suspension device 20b move in the -Y axis direction, and in this state, the cable holding portion 25a of the cable suspension device 20a and the cable holding portion 25b of the cable suspension device 20b move to positions close to the rails 10 of the guide rails 24a and 24b, respectively.

[0026] When the cable 30 is contracted, first, the cable suspension device 20a moves along the rail 10 in a direction approaching the cable suspension device 20b (positive Y-axis direction), as shown in Fig. 4(b). In this case, the cable holding portion 25a of the cable suspension device 20a moves on the guide rail 24a in the direction toward the stopper 26a (positive X-axis direction) due to the force generated when the cable 30 is contracted, and stores the cable 30.

[0027] 4(c), cable suspension device 20a and cable suspension device 20b move along rail 10 in a direction approaching cable suspension device 20c (+Y-axis direction). In this case, cable holding portion 25b of cable suspension device 20b moves on guide rail 24b in the direction toward stopper 26b (+X-axis direction) due to a force generated when cable 30 contracts, and accommodates cable 30.

[0028] As described above, in the present embodiment, when the cable 30 is extended, the cable suspension device 20 moves in the −Y-axis direction along the rail 10, and the cable holding part 25a of the cable suspension device 20a moves on the guide rail 24a from the stopper 26a side to the rail 10 side (−X-axis direction). Similarly, the cable suspension device 20b and the cable holding part 25b move. When the cable 30 is contracted, the cable suspension device 20a and the cable suspension device 20b move in the +Y-axis direction along the rail 10, and the cable holding part 25a of the cable suspension device 20a moves on the guide rail 24a from the rail 10 side to the stopper 26a side (+X-axis direction). Similarly, the cable suspension device 20b and the cable holding part 25b move, thereby reducing interference with an object caused by the hanging of the cable.

[0029] <Variation 1> In the above embodiment, the case was described where cable holding portion 25 moves on guide rail 24 due to the force generated in cable 30 when cable 30 is extended or contracted. However, cable suspension device 40 of variant example 1 will be described where guide rail 33 is structured so that stopper 26 is positioned lower than the lower end of rail 10, thereby promoting movement of cable holding portion 25 by its own weight.

[0030] Fig. 5 is a diagram showing an overview of a cable suspension device 40 according to Modification 1. Note that the same parts as those in the above embodiment are given the same reference numerals, and detailed description thereof will be omitted. As shown in Fig. 5, cable suspension device 40 according to Modification 1 has a cable hanger 21, an upper pulley 22, a lower pulley 23, a guide rail 33, a cable holding portion 25, and a stopper 26. Upper pulley 22 and lower pulley 23 install cable suspension device 40 so that it can move along rail 10.

[0031] The cable holding part 25 moves along the guide rail 33 in which the position of the stopper 26 is located below the lower end of the rail 10. When the cable 30 extends, the force acting on the cable 30 causes the cable holding part 25 to move along the guide rail 33 toward the rail 10, thereby extending the cable 30. When the cable 30 contracts, the cable holding part 25 moves along the guide rail 33 toward the stopper 26 due to its own weight, thereby storing the cable 30 and preventing the cable 30 from sagging below the rail 10.

[0032] <Variation 2> In the above embodiment, the case was described where cable holding portion 25 moves on guide rail 24 due to the force generated in cable 30 when cable 30 is extended or contracted. However, cable suspension device 50 in accordance with variant example 2 will be described where elastic body 35 is provided in cable holding portion 34 and the lower part of stopper 26 to promote movement of cable holding portion 34 toward stopper 26.

[0033] Fig. 6 is a diagram showing an overview of a cable suspension device according to Modification 2. Note that the same parts as those in the above embodiment are given the same reference numerals, and detailed description thereof will be omitted. As shown in Fig. 6, a cable suspension device 50 according to Modification 2 has a cable hanger 21, an upper pulley 22, a lower pulley 23, a guide rail 24, a cable holding portion 34, a stopper 26, an elastic body 35, and elastic body fixing portions 36a and 36b.

[0034] The elastic body 35 is an elastic body such as a spring, rubber, etc. The elastic body 35 is connected to an elastic body fixing part 36a fixed to the cable holding part 34 and an elastic body fixing part 36b fixed to the guide rail 24 at the lower part of the stopper 26.

[0035] A force is constantly applied to the cable holding part 34 in the direction of the stopper 26 by the elastic body 35. When the cable 30 extends, the force acting on the cable 30 causes the cable holding part 25 to move along the guide rail 24 toward the rail 10, thereby extending the cable 30. When the cable 30 contracts, the cable holding part 34 moves along the guide rail 24 toward the stopper 26 due to the force of the elastic body 35, thereby storing the cable 30 and preventing the cable 30 from sagging below the rail 10.

[0036] <Variation 3> In the above embodiment, the case was described where cable holding portion 25 moves on guide rail 24 due to the force generated in cable 30 when cable 30 is extended or contracted. However, a cable suspension device 60 in accordance with variant example 3 will be described where guide rail 43 is cylindrical and anti-rotation groove 46 is provided in guide rail 43 to prevent cable holding portion 44 from rotating.

[0037] Fig. 7 is a diagram showing an overview of a cable suspension device 60 according to Modification 3. Note that the same parts as those in the above embodiment are given the same reference numerals, and detailed description thereof will be omitted. As shown in Fig. 7, cable suspension device 60 according to Modification 3 has cable hanger 21, upper pulley 22, lower pulley 23 (not shown), guide rail 43, cable holding portion 44, stopper 45, anti-rotation groove 46 as an anti-rotation member, and anti-rotation protrusion 47 (not shown).

[0038] To explain the anti-rotation member, Fig. 7(b) shows a cross-sectional view of plane AA' in Fig. 7(a). As shown in Fig. 7(b), cable holding part 44 is provided on the outside of cylindrical guide rail 43. Cable holding part 44 is provided with anti-rotation protrusion 47. Guide rail 43 is provided with anti-rotation groove 46 into which anti-rotation protrusion 47 can be fitted.

[0039] Since the anti-rotation protrusion 47 of the cable holding part 44 is fitted into the anti-rotation groove 46 of the guide rail 43, when the cable 30 is passed through the cable holding part 44, it is possible to prevent the cable holding part 44 from rotating due to the force of the cable 30. Even if the guide rail is a flat plate, a rotation prevention member may be provided to prevent the cable holding part from rotating.

[0040] The configurations illustrated in the above embodiments are merely functional schematics, and are not necessarily physically configured as illustrated. In other words, the form of distribution and integration of each device is not limited to that illustrated, and all or part of the devices can be functionally or physically distributed and integrated in any unit according to various loads, usage conditions, etc. [Industrial Applicability]

[0041] INDUSTRIAL APPLICABILITY The cable suspension device according to the present invention is suitable for reducing interference with objects caused by a sagging cable. [Explanation of symbols]

[0042] 1 Rail 2 Cable Hangers 3 Cable 10 Rail 20, 20a, 20b, 20c Cable suspension device 21, 21a, 21b, 21c Cable hangers 22, 22a, 22b, 22c upper pulley 23 Lower Pulley 24, 24a, 24b, 24c Guide rails 25, 25a, 25b, 25c Cable holder 26, 26a, 26b, 26c Stopper 30 Cable 33 Guide rail 34 Cable holder 35 Elastic Body 36a, 36b Elastic body fixing part 40 Cable suspension device 43 Guide rail 44 Cable holder 45 Stopper 46 Anti-rotation groove 47 Anti-rotation protrusion 50 Cable suspension device 60 Cable suspension device

Claims

1. A cable suspension device that is suspended on a predetermined rail and is configured to be movable on the rail while holding a cable, a cable hanger for preventing the cable from falling; a cable holder that prevents the cable from sagging due to a shortened distance between the cable holder and another cable suspension device; a guide rail for moving the cable holding part in a direction perpendicular to the direction of the rail; A cable suspension device comprising:

2. 2. The cable suspension device according to claim 1, further comprising a stopper provided at an end of the guide rail for preventing the cable holding portion from falling off.

3. The guide rail is 3. The cable suspension device according to claim 2, wherein the stopper is a flat plate located below a lower end of the rail, and promotes movement of the cable holding portion in the direction of the stopper.

4. The guide rail is 3. The cable suspension device according to claim 2, wherein an elastic body is provided between the stopper and the cable holding portion, facilitating movement of the cable holding portion in the direction of the stopper.

5. The guide rail is 5. The cable suspension device according to claim 1, further comprising a rotation prevention member for preventing rotation of the cable holding portion.

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