JPS6047815B2 - Swivel cable drag chain device - Google Patents

Description

Detailed Description of the Invention The present invention provides a rotating type for winding and unwinding flexible long objects such as cables and hoses for transmitting energy such as electric current, gas, and fluid to moving objects. Relating to a cable track chain device.

Such swivel cable track chain devices are known in the art and are widely used for supplying energy via flexible elongated objects such as cables, hoses, etc.

Such known devices generally include (a) one in which an arcuate movable guide frame is inserted into two left and right closed loop chains (see, for example, Japanese Utility Model Publication No. 15885/1985, filed by the present applicant); A chain in which a sliding plate is provided along the arc surface of the chain (for example,
6-16411), 1-→In addition, the motion of the roller attached to the chain is regulated by an arc-shaped guide rail that is concentric with the circumferential wall and is integral with the circumferential wall (for example, Japanese Patent Publication No. 1983, filed by the present applicant). (see Japanese Patent No. 11495), etc. are known. However, in these known devices, the stay or chain attached to the cable cannot rotate more than once due to its structure, so the unwinding length of the long object is determined by its radius of rotation. Therefore, if a roll having a large rotation radius is used, a long unwinding length can be obtained, but the entire device becomes larger. Therefore, the present invention provides a swiveling cable drag chain device in which the chain can rotate one or more times and the device can be made smaller. The swiveling cable drag chain device according to the present invention includes an outer circumferential wall and an inner circumferential wall, a movable end is connected to one of the inner and outer circumferential walls, a fixed end is connected to the other, and the movable end is connected to the outer circumferential wall of the inner circumferential wall. It has a chain that can be reversely moved between the outer circumferential wall and the inner wall, and an annular guide frame that can be freely rotated along the inner and outer circumferential walls by means of guide rollers in a space sandwiched between the parallel inner and outer chains. , the guide frame leaves the necessary space at the bending point of the chain as a window for passage into and out of the chain. Therefore, the movable end of the chain is fixed to either the inner or outer circumferential wall, and when this is rotated, the chain is pulled out from one side to the other through the space, resulting in a 360
It rotates more than 600 degrees and is housed in the other peripheral wall. Therefore, the rotation angle can be greatly expanded. Furthermore, according to the present invention, a plurality of sets of the above-mentioned swivel cable drag chains are arranged concentrically.

In this way, the rotation angle can be further increased. Further, according to the present invention, a floor surface that supports the chain. is integrated with the outer peripheral wall to reduce friction and make it easier for the chain to turn.

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, one end of the cable drag and the chain 1 is connected to a movable metal fitting 2, and the other end is connected to a fixed metal fitting 3.

The movable fitting 2 is attached to the outer circumferential wall, that is, the inner circumferential wall 9, and the fixed fitting 3 is attached to the inner circumferential wall, that is, the inner circumferential guide wall 1.
It is attached to 0. As shown in FIG. 2, the cable drag chain 1 is provided in two sets, left and right, each supporting a guide roller 4 that engages with both the inner and outer guide walls 9 and 10. The guide frame 5 has both inner and outer guide walls 9 and 10.
A bracket 6 is formed in a ring shape around the entire circumference of the guide walls 9 and 10 in a space having a U-shaped cross section between the guide frame 5 and the bottom surface 13, and a bracket 6 is fixed to the top surface of the guide frame 5. A guide roller 7 that is guided along an inner peripheral guide wall 10 is provided at the tip of the bracket 6.

However, the bracket 6 may be configured to protrude to the opposite side in FIG. 2 and be guided by the outer peripheral guide wall 9. Guide rollers 4 of the chain 1 face both side surfaces 51 and 52 of the guide frame 5, respectively. The guide roller 4 does not necessarily have to be a roller,
For example, chain 1, guide frame 5 and chain 1
A sliding surface made of a metal material or synthetic resin having a low coefficient of friction is provided at the location where the inner and outer guide walls 9, 10 come into contact with each other,
It can be replaced with the guide roller 4. Furthermore, the movable fitting 2 may be attached to the inner guide wall 10 and the fixing fitting may be attached to the outer guide wall 9. In this case, the operation is simply reversed.
The guide frame 5 is the part where the chain 1 is curved,
The chain 1 is separated leaving a necessary space S so that the chain 1 can move into the space between the inner and outer guide walls and the guide frame 5, and in the space S, the moving end fitting 2 and the connecting plate 8 are connected. are integrally connected via. Therefore, when the chain 1 rotates along the guide wall surface, the annular guide frame is pushed and rotated in the same direction as the rotation direction of the chain 1. As shown in FIG. 2, the floor surface 13 is separated between both guide walls 9 and 10, and the guide frame 5 has, at its lower part, a free wheel 12a that rolls on the floor surface 13. .

A plurality of stays 11 are arranged on both sides of the frame 5 and extend vertically at angular intervals between a pair of upper and lower chains 1. A large number of holes H are drilled for storage. This stay 11 is known per se. Further, on the underside of the lower chain 1, a suitable number of swivel wheels 12 are provided, also angularly spaced apart. The flexible wheels 12 are for supporting the weight of the long object stored in the stay 11 on the floor surface 13. At the time of operation, it is assumed that the movable fitting 2 is now in position A as shown in Fig. 1,
It is assumed that the movable fitting 2, the outer circumferential guide wall 9, and the floor surface 13 are rotated clockwise in FIG. 1 by a rotation driving unit (not shown).

At this time, the guide roller 4 located inside the bent part of the chain 1 will press the guide frame clockwise in FIG.
There are 1 and 2 rotational speeds. The operating state of the chain 1 is shown in FIG.

First, assuming that the movable bracket 2 rotates clockwise from the position shown in Fig. 3A, when it rotates exactly 360 degrees, the third
The state shown in the figure is reached. Then, when it is further rotated by approximately 600 degrees from the position shown in FIG. 3A, the state shown in FIG. 3C is obtained. The reference numeral in FIG. 1 indicates the position of the movable fitting 2 at this time. Next, when the movable fitting 2 is rotated counterclockwise from the state shown in FIG. The drawing returns to the original state as shown in FIG. Since the frame 5 is pressed, the reversal action is performed smoothly. In the cable drag chain device that stores flexible long objects such as cables and hoses in this way, the movable fitting 2 follows the rotary drive section and reciprocates around an angle of about 600 degrees to store the long objects. Since it can be unrolled, the unwinding length can be increased.

In carrying out the present invention, the same effect can be obtained even if the movable end side and the fixed end side are attached oppositely to the inner and outer guide walls 9, 10.

In any case, if the movable fitting 2, that is, the rotary drive end, one of the inner and outer guide walls, and the floor surface 13 are simultaneously rotated, the frictional force between them and the chain is reduced, and therefore the tension is reduced. . Furthermore, since the guide frame 5 is free only in the rotational direction, the chain 1 can meander smoothly during turning, and opposing chains can be prevented from rubbing against each other or interfering with each other.

In addition, if there are a large number of flexible long objects, the length of the device in the axial direction may be increased (increased height); even if this is done, the stability of the entire device will not be affected. Prevents the chain from twisting or falling. Therefore, high-speed turning is also possible. In carrying out the present invention, the guide frame 5 is located between the inner and outer guide walls on which the chain 1 is guided, and the guide rollers 7 need only be engaged with either one of the inner and outer guide walls. Since only one thread 1 is required and there is no need for a closed loop with two inner and outer threads, the structure is significantly simplified.

4 and 5 show another embodiment of the invention, 60
This is an example in which it is possible to turn more than 0 degrees, for example, about 1200 degrees.
In this example, the chain connected between the radially outer movable fitting 2a and the radially inner fixed fitting 3b consists of a first chain portion A and a second chain portion B, and both chains Parts A and B are respectively central guide wall 1
5, and the devices shown in FIGS. 1 and 2 are provided concentrically in double layers inside and outside. Therefore, the outer or first
The chain portion A of the chain portion A is denoted by a suffix a, and the inner second chain portion B is denoted by a suffix b, which are the same as in the previous embodiment, and repeated explanation will be omitted. Next, the operation will be explained mainly with reference to FIGS. 6A to 6B.

It is assumed that the movable end fitting 2, that is, the outer peripheral guide wall 9a, is rotated clockwise from the state shown in FIG. The state at this time is as shown in FIG. 6A. Similarly to the previous embodiment, the first chain section A is connected to the connecting plate 8a.
The vehicle passes through the space at , and travels sequentially along the outer guide wall 9a. At this time, the outer guide frame 5a rotates clockwise at half the rotational speed of the first chain portion A while being pushed by the guide roller 4a. FIG. 6 shows the point where the movable end fitting 2a has rotated about 600 degrees (one and two-thirds of a turn), and at that time the mounting fitting 12c comes close to the above-mentioned space. Since the mounting brackets 12c and 12d are both fixed to the center guide wall 157, after the first chain section A has completely turned as shown in FIG. Rotate the guide wall 15. Then, the second chain portion B begins to rotate, resulting in the state shown in FIG. 6C. In this way 9 about 120
When rotated by 0 degrees (about 3 turns and about 1/3), the guide frame 5a rotates about 900 degrees and the guide frame 5b rotates about 30 degrees.
This results in a 0 degree rotation, and the second chain portion B is in a fully rotated state as shown in FIG. 6-2. At this time, the central guide wall 15 rotates approximately 600 degrees. At this point, the unwinding operation is completed. Conversely, if you rotate it counterclockwise, the operation will be reversed to the above and it will be stored. As shown in FIG. 5, ■ shape materials 20 are arranged and fixed in a circumferential manner with the peaks facing downward on the back surfaces of the floor surfaces 13a and 13b, and in order to support the ■ shape materials 20; If the bodies 21 are provided at several locations around the circumference, each guide wall will not move inwardly or outwardly even if a large amount of force is applied to the cable drag chain. According to this embodiment, the sum of the rotation angle of the outer first chain section A and the rotation angle of the inner second chain section B becomes the entire rotation angle, and multiple turning movements are possible.

In this way, it is also possible to further increase the number of guide walls and spaces to have three or more layers. According to the present invention as described above,
There are some that have the following excellent effects.

(1) Multiple turns are possible and can be applied to large turning angles.

(2) Since it can also be applied to a single cable drag chain, the structure is simpler and cheaper than when two chains are used as a closed loop.

(3) Prevents chain interference and meandering, increases the stability of the entire device, and can be applied to high-speed turning.

[Brief explanation of the drawing]

FIG. 1 is an open plan view showing an example of a swivel cable drag chain device embodying the present invention, and FIG.
- Cross-sectional view along line ■, Figure 3 A, mouth and C are respectively 1st
FIG. 4 is a plan view similar to FIG. 1 showing another embodiment; FIG. 5 is a sectional view taken along the line ■-■ in FIG. 4; Figures 6A, 6C and 2 are explanatory diagrams of the operation of the apparatus shown in Figure 4, respectively. 1...Chain, 2...Moving end fitting,
3... Fixed end metal fitting, 4... Guide roller, 5... Guide frame, 6... Bracket, 7... Guide roller, 8・・・・・・
Connecting plate, 9... Outer guide wall,
10...Inner guide wall, 11...Stay,
12...Flexible wheels, 13...Floor surface, 14
...Guide guide, A, B...Chain part.

Claims (1)

[Scope of Claims] 1. Comprising an outer circumferential wall and an inner circumferential wall, the movable end is connected to one of the inner and outer circumferential walls, the fixed end is connected to the other, and the outer circumference of the inner circumferential wall and the outer circumferential wall and the inner wall are connected. The chain has a chain that can be reversed and moved between the chains, and a guide frame that is an annular body that can be rotated freely along the inner and outer circumferential walls by guide rollers in the space sandwiched between the parallel inner and outer chains. A swiveling cable drag chain device characterized by leaving a space necessary as a window for passage into and out of the curved point of the chain. 2. Comprising an outer circumferential wall and an inner circumferential wall, the movable end is connected to one of the inner and outer circumferential walls, the fixed end is connected to the other, and the distance between the outer circumference of the inner circumferential wall and the outer circumferential wall and the inner wall is reversed. It has a movable chain and an annular guide frame which can be rotated along the inner and outer circumferential wall surfaces by guide rollers in the space sandwiched between the parallel inner and outer chains, and the guide frame is placed at the bending point of the chain. A swiveling cable drag chain device characterized in that a plurality of sets are arranged concentrically, leaving a necessary space as a window for passage into and out of the chain. 3 Comprising an outer circumferential wall and an inner circumferential wall, the movable end is connected to one of the inner and outer circumferential walls, the fixed end is connected to the other, and the outer circumference of the inner circumferential wall and the inner wall of the outer circumferential wall are reversed. In the space sandwiched between the movable chain and the parallel inner and outer chains, there is an annular guide frame that can be rotated freely along the inner and outer circumferential walls by guide rollers. A swiveling cable drag chain device that leaves a necessary space as a window for passage between the inside and outside of the chain, and is characterized in that a floor surface for supporting the chain is provided integrally with the outer peripheral wall.