JPH0573339U - Open cable drag chain - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to eliminate the difficulty in storing or removing the cable from the drag chain and to prevent damage to the cable. [Structure] A link in which both ends of an upper side connecting rod are removably mounted in connection recesses formed in the upper center of a center of a link plate in which outer and inner surfaces of both ends are formed in different steps An open type cable drag chain in which a plurality of bodies are superposed and connected by a connecting portion provided on the outer side of the end of the link plate and an inner connecting portion provided on the inner side of the other end so that they can be fitted and removed freely.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suitable cable drag chain for supporting and guiding a hose, a cable, etc. for supplying power to a moving body.

[0002]

[Prior Art]

 Conventional metal drag chains have various drawbacks such as their own weight and limited strokes, so synthetic resin drag chains have recently appeared. However, many of them are not very convenient.

For example, since the connecting rod is opened and closed only on the outer side of the drag chain, it is difficult to store the cable or the like in the drag chain or take it out from the drag chain. Since the inner and outer side surfaces of the link body are not flat at the connection points of the link body, there is a risk of damaging the stored cables and hoses.

[0004]

[Problems to be solved by the device]

 The present invention solves these problems all at once, and in the state where both ends of the cable and the like are connected to the fixed end and the moving end, the link body is assembled and the individual link bodies are connected to each other to form the cable. It is possible to construct a drag chain that accommodates, etc., and open the connecting rod to the drag chain that has already been installed between the fixed end and the moving end to twist the cable etc. Furthermore, by making one end pivotally supported and allowing the other end to be inserted and removed, it is possible to inspect and repair the cables, etc. stored in the drag chain even at the intermediate position, and replace the link body at the intermediate position. The purpose is to facilitate the work.

[0005]

[Means for solving problems]

 In order to achieve the above-mentioned object, the present invention changes the structure of a cable drag chain to a connecting recess formed at the upper center of a pair of link plates facing each other in which the outer surface and the inner surface of both ends are stepped. A plurality of link bodies mounted so that both ends of the upper side connecting rod can be fitted and removed can be fitted and removed by an outer connecting portion provided outside the end of the link plate and an inner connecting portion provided inside the other end. It is an open-type cable drag chain that is polymer-connected.

[0006]

[Action]

 The pair of link plates and the upper side connecting rods that compose the link are fitted and removed so that they can be disassembled and assembled. This is done by removing the drag chain from the cable. Furthermore, when exchanging a part of the link body of the drag chain that accommodates cables, etc., the link body is partially attached or detached by opening the upper side connecting rod and separating the overlapping coupling fitting recess of the adjacent link plate. can do.

[0007]

【Example】

 1 to 6 show an embodiment of the present invention, FIG. 1 is a front view showing a bent state of an inner surface of a link plate of a cable drag chain, and FIG. 2 is an enlarged perspective view of an essential part of the drag chain. FIG. 3 is an exploded perspective view of the link body. (A) is an upper side connecting rod, (b) is a pair of opposed link plates, and (c) is an upright installation between the upper side connecting rod and the paired link plates. Partition plate, FIG. 4 (a) is an inner side view of a link plate having a pivotal support portion of the upper side connecting rod, FIG. 4 (b) is an outer side view, and FIG. 5 is a plane in which end portions of adjacent link plates are superposed and connected. FIG. 6 is a cross-sectional view, and FIG. 6 is a perspective view of an essential part of a device part that is detachable and rotatable between one end of the upper side connecting rod and the upper side of one of the link plates. ) Is the upper side of the link plate.

The cable drag chain shown in FIG. 1 for accommodating and supporting the cables and the like guides the ends of a large number of link bodies 2 so that the ends of the link bodies 2 are superposed and connected to each other, and each link body 2 is connected to the cable drag chain 1. Between the fixed end F and the moving end M, the two ends are bendable in one direction, for example, downward as shown, but are connected to each other in a non-bendable manner in the other direction, for example, upward.

As shown in FIG. 2, each link body 2 includes a pair of spaced-apart link plates 4a and 4b, and an upper side connecting rod 6 and a lower side that connect the upper sides of both the link plates 4a and 4b to each other in a removable manner. It has a partition plate 8 mounted upright so that it can be fitted into and removed from the rod 7.

The upper side connecting rod 6 is rotatably fitted around the upper sides of the link plates 4a and 4b, and is connected to the connecting concave portions 9 formed on the opposite outer surfaces of the end portions of all the link plates. 5, a snap engaging connecting pin 3 is provided in a projecting manner, and a connecting recess 10 formed at the other end of the link plate is provided with a snap stopper pin hole 3b for inserting and removing the connecting pin 3a. As shown in FIG. 5, the link body 2 is connected by overlapping and connecting the outer connecting portion 9 and the inner connecting portion 10 of the adjacent link plates and fitting the connecting pin 3a into the pin hole 3b and snap-fitting. To form a cable drag chain 1 as shown in FIG.

Here, the link plates 4a and 4b have, for example, the connecting pin 3a projectingly provided on the outer side of the end so that the outer surface and the inner surface of both ends are stepped. When the insides of the ends of the holes 3b that are provided through the connection are recessed as the connecting recesses 10 and the link bodies 2 are superposed and joined, the inner and outer surfaces of the joined plurality of link bodies 2 are flat. Is done.

As shown in FIG. 3, each link body 2 is assembled by the upper side connecting rod 6, a pair of spaced apart and opposed link plates 4a and 4b, and a partition plate 8, and the pair of link plates 4a and 4b are shown in FIG. As shown in FIG. 4, connecting pins 3a are provided so as to project, and, for example, the chain 1 in FIG. 1 is in a direction opposite to the first bending restricting surfaces 11a and 11b that restrict the downward bending angle of the chain 1 in FIG. It has first inversion prevention surfaces 12a and 12b that prevent it from being bent upward.

Therefore, when the inner connecting portion 9 at one end and the outer connecting portion 10 at the other end of the link plates adjacent to each other in the longitudinal direction are superposed and connected to each other as shown in FIG. The adjacent link plates are rotatably connected to each other by being fitted into the pin holes 3b and snap-engaged, and the cable bending chain is shown in FIG. 1 by the first bending restriction surfaces 11 and 11 '. As shown, the maximum downward bending angle is restricted, and the first reversal blocking surfaces 12a and 12b prevent the cable drag chain 1 from reversing from the direction shown in FIG. 1 and curving upward. The chain is rigid in a straight line and the middle part does not hang downward.

In addition, an upper side connecting rod 23 on which one end of the upper side connecting rod 6 is removably and rotatably fitted and an upper side connecting rod on the other side of the other link plate 4b is inserted on the upper side of one link plate 4a. It has a snap locking portion 25 that allows the other end of 6 to be fitted and removed.

Then, as shown in FIG. 6 (a), a pair of rotating shaft portions 27, 27 fitted to the above-mentioned upper side pivotal support portion 23 and a rotating shaft portion 27, 27 are attached to the one end extending portions 6 a, 6 b of the upper side connecting rod 6. A guide surface 28 and a snap locking projection 29 projecting on the surface are provided, and the upper side pivotal support portion 23 of one of the link plates 4a has the upper side connecting rod 6 of the upper side connecting rod 6 as shown in FIG. 6B. It has bearing surfaces 30 and 30 for rotatably supporting the rotation shaft portions 27 and 27, a rotation plan inner surface 31 of the rotation guide surface 28, and a snap locking portion 32 of the snap projection 29. Therefore, one end of the upper side connecting rod 6 is prevented from moving in the front-rear, left-right direction and downward by the fitting of the rotating shaft portions 27, 27 and the bearing surfaces 30, 30 and the snap projection 29 and the snap locking. Snap engagement of the portion 32 and sliding of the rotation guide surface 28 and the lower surface of the rotation guide surface 31 Since it is prevented from floating upward by the above, one end of the upper side connecting rod 6 and the upper side of the link plate 4a are fixedly connected and are not separated.

However, by opening the other end of the upper side connecting rod 6 upward, the engagement between the snap projection 29 and the snap locking portion 32 is released, and the rotation guide surface 28 slides into the rotation guide surface 31. Now, the rotating shaft portions 27, 27 are supported by the bearing surfaces 30, 30 to be rotatable, and the one end extending portions 6a, 6a of the upper side connecting rod 6 abut on the inner sides 33, 33 of the upper side of the link plate 4a. As a result, the open standing rotation position of the upper side connecting rod 6 is regulated, and at the same time, one end of the upper side connecting rod 6 can be fitted and removed at the position.

As shown in FIG. 3B, the link plates 4 a, 4 b have an upper sliding guide groove 45 having a fitting recess 44 on the inner surface of the inner side of the upper side connecting rod 6. A slide guide groove 46 is provided on the surface at a position lateral to the slide guide groove 45. Each slide guide groove 45, 46 has a pair of lower slide snaps formed at the tip of the partition plate 8. The engaging leg pieces 47, 47 and a pair of upper sliding snap engaging leg pieces 48, 48 formed on the upper end of the partition plate 8 are slidably loosely fitted, and further, a pair of lower sliding snap engaging leg pieces 47, 48. A hanging lock having a lower end serving as a curved guide surface is provided between 47, and the locking piece is inserted into and removed from the lock.

Therefore, by pushing down the partition plate at a desired position, the hanging locking piece is clamped in the slide guide groove 45 and the position is fixed, so that the cable housed in the cable drag chain 1 is fixed. The partition plate 8 suppresses the wandering of the cable and the like, and prevents surface scratch damage of the cable and the like. When the partition plate 8 is turned upside down, there is no hanging locking piece between the upper sliding snap engaging leg pieces 48, 48, and therefore the locking projection 44 is not engaged. , 46 can be slid freely.

[0019]

[Effect of the device]

 According to the present invention, a large number of link bodies 2 constituting a cable drag chain have a pair of link plates and a coupling rod that are removably coupled to each other and are spaced apart and face each other. Since the inner connecting part and the outer connecting part are fitted to each other, even if the inner connecting part and the outer connecting part are superposed and connected, both the outer surface and the inner side surface of the cable drag chain will be uneven. Since it is formed on a flat surface that does not occur, the bending and movement of the cable drag chain can be performed smoothly without any hindrance, there is no fear of scratching the surface of the stored cables, and the link plates are connected to each other. Is performed by fitting and inserting a connecting pin integrally formed with the link plate and a pin hole, and the pair of link plates is coupled to each other by a pivotal support and a sleeve integrally formed with the link plate. Since it is carried out by fitting with the locking part and the upper side connecting rod, the pair of link plates and the upper side connecting rod can be assembled and connected to the link body without using a special tool. Since it can be easily disassembled into pieces, it is possible to assemble a cable drag chain accommodating a cable or the like provided between the fixed end F and the moving end M. It is not necessary to insert the cable from the opening at one end of the closed type chain, and it can be installed even on existing cables, etc., and when removing the drag chain from the cable etc., leave the cable etc. as it is, This can be done by disassembling each link body, and it is also possible to replace the link body in the middle part of the cable drag chain. Part batchwise repair inspection of cables housed in the drag chain is also possible. Furthermore, since the link body can be completely disassembled into pieces, it can be expanded or contracted to the optimum cable drag chain according to the increase or decrease in the storage amount of cables etc., and the number of link bodies can be easily increased or decreased. Since it can be connected, the chain length can be adjusted to the optimum length, and the structure of the link plate and the upper side connecting rod is configured so that it can be integrally molded with resin, etc. Its effects are remarkable, such as easy and cost reduction.

[Brief description of drawings]

FIG. 1 is a front view showing a bent state of an inner surface of a link plate of a cable drag chain.

FIG. 2 is an enlarged perspective view of a main part of a cable drag chain.

FIG. 3 is an exploded perspective view of a link body, in which (a) is an upper side connecting rod, (b) is a pair of opposed link plates,
(C) is a partition plate.

4 (a) is a front view of the link plate of FIG. 3 (b), and FIG. 4 (b) is a rear view of the link plate superposed on the link plate of FIG. 3 (b).

FIG. 5 is a plan cross-sectional view of an overlapping connecting end portion of adjacent link plates.

6A and 6B are perspective views showing a fitting / removing structure of an upper side of one of the link plates and one end of the upper side connecting rod, FIG. 6A is a perspective view of a main part of the one end of the upper side connecting rod, and FIG. It is a principal part perspective view of an upper side.

[Explanation of symbols]

 1 cable drag chain 2 link body 3a connecting pin 3b pin hole 4a link plate 4b link plate 6 upper side connecting rod 9 connecting recess 10 connecting recess 23 pivotal support 27 turning shaft 29 snap protrusion 30 bearing surface 32 snap locking part

Claims (3)

[Scope of utility model registration request] 1. A plurality of link bodies are flexibly connected,
In a cable drag chain that internally houses cables, hoses, etc., the upper side connecting rod is formed in the connecting recess formed in the upper center of the center of the link plates that are spaced apart and opposed to each other with the outer and inner surfaces of both ends being stepped. A plurality of link bodies, each of which is removably attached to both ends thereof, are removably overlapped and connected by an outer connecting portion provided on the outer side of the end of the link plate and an inner connecting portion provided on the other inner side. Type cable drag chain. 2. The end of the upper side connecting rod is attached to the upper side recess of the link plate by connecting the rotating shaft portion and the snap locking projection to the end of the upper side connecting rod, and the pivotal support portion is provided in the upper side recess of the link plate. The open-type cable drag chain according to claim 1, wherein the rotating shaft portion is supported on the bearing surface and the snap projection is engaged with the snap engagement portion by forming a bearing portion and a snap engagement portion that are connected to each other. . 3. Overlapping joining of link bodies in which overlapping connecting portions are formed in steps is provided by penetrating an engaging connecting pin projecting from an outer surface facing each other at one end of the link plate and the other end of one link plate. The open type cable drag chain according to claim 1, which is engaged with a retaining pin hole.