JP6475090B2 - Guide device for cable protection guide member - Google Patents

Description

  The present invention relates to a guide device for cables protection guide members.

  Conventionally, a cable protection guide member represented by a cable bear (registered trademark) has been known (see, for example, Patent Document 1). The cable protection guide member includes a plurality of joint portions and is configured to bend in the longitudinal direction. The cable protection guide member protects the electric cable and the like connected to the moving structure, and guides the electric cable and the like as the moving structure moves, and is arranged in a bent state. Therefore, the bent portion is displaced according to the operation of the moving structure (see arrow M in FIG. 8A).

  The cable protection guide member has a large resistance when the bending part is displaced if the bending angle of the joint part at the bending part becomes too large. It becomes. Therefore, for example, an inner ring having a predetermined outer diameter is brought into contact with the inner peripheral side of the bent portion, and the bending angle of the bent portion is bent by limiting the bending angle of the joint portion to be smaller than the maximum allowable angle. A guide device for a cable protection guide member configured to maintain a size such that the portion can be smoothly displaced (see arrow R in FIG. 8B) and to reduce the guide resistance of the cable protection guide member. It has been devised (see Patent Document 2).

JP 2013-245784 A Japanese Utility Model Publication No. 63-123567

  However, in the guide device having a configuration in which the inner ring is in contact with the inner peripheral side of the bent portion of the cable protection guide member as described above, the bent portion is always displaced in accordance with the movement of the moving structure. There was a case where the position shifted. In other words, the inner ring may move from a position in contact with the inner peripheral side of the bent portion and be separated from the inner peripheral side of the bent portion (see arrow S in FIG. 8C). In this case, the bending angle of the joint portion locally increases due to the weight of the cables protection guide member, and the guide resistance of the cables protection guide member increases. For this reason, the guide apparatus of the cable protection guide member which can maintain the state which the inner ring | wheel contact | connected the inner peripheral side of the bending part was calculated | required.

  Therefore, the present invention provides a guide device for a cable protection guide member that can maintain a state in which the inner ring is in contact with the inner peripheral side of the bent portion.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

The invention of this application
It is a long object provided with a plurality of joint parts, and is a guide device for cables protection guide members configured to be bent in the longitudinal direction,
The inner ring arranged in contact with the inner peripheral side of the bent portion so that the bending angle of the joint portion of the bent portion of the cables protection guide member arranged in a bent state is smaller than the maximum allowable angle. When,
An outer ring disposed in contact with the outer peripheral side of the bent portion, and
The inner ring and the outer ring are connected in a state of sandwiching the cables protection guide member.

  As effects of the present invention, the following effects can be obtained.

  The guide device for the cable protection guide member according to the invention of the present application is such that the bending angle of the joint portion of the bending portion of the cables protection guide member arranged in a bent state is smaller than the maximum allowable angle. And an outer ring disposed in contact with the outer peripheral side of the bent portion. And the inner ring and the outer ring are connected in a state of sandwiching the cables protection guide member. As a result, the guide device can rotate in a state where the inner ring and the outer ring sandwich the cable protection guide member so as to follow the displacement of the bent portion, so that the inner ring is in contact with the inner peripheral side of the bent portion. Can be maintained.

The figure which shows a conveyance installation. The figure which shows cables protection guide members. The figure which shows the guide apparatus which concerns on one Embodiment. The figure which shows operation | movement of a guide apparatus when a moving structure moves ahead. The figure which shows operation | movement of a guide apparatus when a moving structure moves back. The figure which shows a guide apparatus provided with an outer ring and an auxiliary wheel on the same axis. The figure which shows a guide apparatus provided with a support ring. The figure which shows the guide apparatus which concerns on a prior art.

  First, the transport facility 10 will be briefly described.

  FIG. 1 shows a transport facility 10. In addition, in the figure, the front-back direction and the up-down direction of the conveyance equipment 10 are represented.

  The transport facility 10 is a facility for transporting parts and tools in an industrial product manufacturing factory. The transport facility 10 mainly includes a wagon 1, a shuttle unit 2, cables 3, and cables protection guide members 4.

  The wagon 1 is a loading platform for conveying parts and tools. The wagon 1 is movably mounted on the gantry 5, and moves forward when pushed by the worker W, and moves backward when pulled by the worker W. Electricity and air are sent to the wagon 1 via the shuttle unit 2.

  The shuttle unit 2 is a unit for supplying electricity and air to the wagon 1. The shuttle unit 2 is detachably attached to the lower surface of the wagon 1. Therefore, the shuttle unit 2 moves forward together with the wagon 1 when the wagon 1 moves forward, and moves backward together with the wagon 1 when the wagon 1 moves backward. In addition, electricity is sent to the shuttle unit 2 via an electric cable. Furthermore, air is sent to the shuttle unit 2 via an air hose. In the present embodiment, a flexible flexible object such as an electric cable or an air hose is referred to as “cables 3”.

  The cables 3 supply electricity and air to the shuttle unit 2. The cables 3 are flexible long objects that can be bent. The base end portion of the cables 3 is fixed to the floor surface 6, and the distal end portion thereof is connected to the shuttle unit 2. In the present transport facility 10, the cables 3 are extended from the front side to the rear side of the transport facility 10 along the floor surface 6 as viewed from the base end side, and are folded back to the front side in the middle portion of the cable 3. It arrange | positions so that the side and a base end side may overlap up and down. In other words, the cables 3 that are arranged with their longitudinal directions along the front-rear direction and folded back to the front side in the middle have a bent portion on the rear end side. Therefore, when the shuttle unit 2 moves forward, the cables 3 are pulled forward by the shuttle unit 2 and the bent portion moves forward. Further, when the shuttle unit 2 moves rearward, the cables 3 are pushed rearward by the shuttle unit 2 and the bent portion moves rearward. The cables 3 are covered with a cable protection guide member 4.

  The cable protection guide member 4 is a member that protects and guides the cables 3 such as a cable bear (registered trademark). The cable protection guide member 4 is a long object provided with a plurality of joint portions 4A, and is configured to be bendable in the longitudinal direction thereof. The cable protection guide member 4 has a proximal end portion fixed to the floor surface 6 and a distal end portion connected to the shuttle unit 2. In the present transport facility 10, the cables protection guide member 4 extends from the front side to the rear side of the transport facility 10 along the floor surface 6 when viewed from the base end side, and is folded back to the front side in the middle thereof. Thus, the distal end side and the proximal end side are arranged so as to overlap vertically. That is, the cable protection guide member 4 that is arranged with its longitudinal direction along the front-rear direction and folded back to the front side in the middle part has a bent portion F formed on the rear end side. Therefore, when the shuttle unit 2 moves forward, the tip end portion of the cables protection guide member 4 is pulled forward by the shuttle unit 2. At this time, the bent portion F of the cables protection guide member 4 is displaced forward (see arrow D in FIG. 4). The cable protection guide member 4 is pushed backward by the shuttle unit 2 when the shuttle unit 2 moves backward. At this time, the bent portion F of the cables protection guide member 4 is displaced rearward (see arrow D in FIG. 5). The cables protection guide member 4 holds the cables 3 inside thereof. Therefore, the cables protection guide member 4 is deformed integrally with the cables 3.

  As described above, the cable protection guide member 4 protects and guides the electric cable or the like connected to the moving structure (which corresponds to the shuttle unit 2), and is arranged in a bent state. Therefore, the bent portion F is displaced with the movement of the moving structure (shuttle unit 2) (see arrow D in FIGS. 4 and 5).

  Next, the cables protection guide member 4 will be described.

  FIG. 2 shows the cables protection guide member 4. In addition, in the figure, the front-back direction, the up-down direction, and the left-right direction of the conveyance equipment 10 are represented.

  The cable protection guide member 4 is configured by connecting a plurality of cable links 40. The cable link 40 includes a side plate 41, an arm plate 42, and a stay plate 43.

  The side plate 41 is formed in a substantially oval shape. The side plate 41 has a concave outer surface at one arc portion in the front-rear direction, and a pin 41 a that protrudes left and right outward is formed at the center of the concave portion. Further, the side plate 41 has a concave inner surface at the other arc portion in the front and rear, and a pin hole 41b is formed at the center of the concave portion. Therefore, the side plates 41 adjacent in the front-rear direction are connected in a state where the pin 41a is inserted into the pin hole 41b. Accordingly, the side plate 41 is rotatable up and down around the pin 41a. In addition, the side plate 41 and the other side plate 41 arrange | positioned at right-and-left object comprise the cable link 40 by 2 sheets 1 set.

  The arm plate 42 is formed in a substantially rectangular shape. The arm plate 42 has an end surface at one end portion in the left-right direction protruding outward in the left-right direction, and a hook 42a is formed on the lower surface side of the convex portion. The arm plate 42 has an end surface at the other end in the left-right direction protruding outward in the left-right direction, and a hook 42a is formed on the lower surface side of the convex portion. Therefore, the arm plate 42 is fixed in a state where the hook 42 a is hung on the lock bar 41 c of the side plate 41. Therefore, the arm plate 42 can hold the cables 3 passing between the two side plates 41. The arm plate 42 constitutes the cable link 40 as a single piece.

  The stay plate 43 is formed in a substantially rectangular shape. In the stay plate 43, an end surface at one end portion in the left-right direction protrudes outward in the left-right direction, and a hook 43a is formed on the upper surface side of the convex portion. In addition, the end surface of the other end portion in the left-right direction of the stay plate 43 protrudes leftward and rightward, and a hook 43a is also formed on the upper surface side of the convex portion. Therefore, the stay plate 43 is fixed in a state where the hook 43a is hung on the lock bar 41d of the side plate 41. Therefore, the stay plate 43 can hold the cables 3 passing between the two side plates 41. The stay plate 43 constitutes the cable link 40 as a single piece.

  The cable protection guide member 4 configured in this manner is freely bendable in the longitudinal direction by a plurality of joint portions (corresponding to a portion rotating in the vertical direction around the pin 41a of the side plate 41) 4A. . That is, each joint part 4A can be rotated around a pin 41a orthogonal to the moving direction (front-rear direction) of the shuttle unit 2, and the cables can be protected by rotating each joint part 4A. The guide member 4 can be bent.

  By the way, as for the cable protection guide member 4, the maximum permissible angle is defined in each joint part 4A. Hereinafter, a structure in which the bending angle α of each joint portion 4A is limited will be described. Here, the bending angle α refers to an angle formed by adjacent cable links 40 connected to each other (see FIGS. 4 and 5).

  On the outer surface of the side plate 41, there is formed a substantially sector-shaped recess 41e extending in the radial direction of the pin 41a around the pin 41a. The recess 41e is formed in a range having a predetermined angle in the circumferential direction around the pin 41a. Further, on the outer surface of the side plate 41, a substantially rectangular convex portion 41f extending along the radial direction of the pin 41a with the pin 41a as a center is formed. Furthermore, a substantially sector-shaped recess 41g is formed on the inner surface of the side plate 41 and extends in the radial direction of the pin hole 41b with the pin hole 41b as a center. The concave portion 41g is formed in a range having a predetermined angle in the circumferential direction around the pin hole 41b. Further, on the inner surface of the side plate 41, a substantially rectangular convex portion 41h is formed extending along the radial direction of the pin hole 41b with the pin hole 41b as a center. Therefore, the side plates 41 adjacent to each other in the front-rear direction are connected in a state where the convex portion 41 h is fitted in the concave portion 41 e. At the same time, the protrusions 41f are connected to the recesses 41g. Therefore, the side plate 41 is rotatable within a range in which the convex portions 41f and 41h do not interfere with the wall surfaces at both ends in the circumferential direction of the concave portions 41e and 41g.

  With such a structure, the bending angle α of each joint portion 4A of the cables protection guide member 4 is limited. It should be noted that the convex portions 41f and 41h are in contact with the wall surfaces at both ends in the circumferential direction of the concave portions 41e and 41g, and the bending angle α in a state where the convex portions 41f and 41h cannot be rotated any further is set to the maximum allowable angle ( Is 60 degrees to one side).

  Further, the present transport facility 10 includes a guide device 7 (see FIG. 1). Below, the guide apparatus 7 is demonstrated in detail.

  FIG. 3 shows a guide device 7 according to one embodiment. In addition, in the figure, the front-back direction, the up-down direction, and the left-right direction of the conveyance equipment 10 are represented.

  The guide device 7 is mainly composed of an inner ring 71 and an outer ring 72.

  The inner ring 71 is a roller-like member, and is formed on the entire inner peripheral side of the bent portion F of the cables protection guide member 4 (the entire inner peripheral side of the arc portion: a range of about 180 degrees centering on the rotation shaft 71s). Arranged in contact. The inner ring 71 is rotatable about a rotation shaft 71s that is parallel to the left-right direction. In the inner ring 71, both ends of the rotation shaft 71s are supported by the frame body 73. The inner ring 71 may include a buffer member formed of rubber or the like on the outer peripheral surface thereof. By providing the buffer member, the inner ring 71 rotates without slipping with respect to the cable protection guide member 4, and the cable protection guide member 4 can be smoothly guided. In addition, there is an effect that the vibration of the cables protection guide member 4 can be suppressed.

  In addition, the outer diameter of the inner ring 71 is determined so that the turning radius Φ of the bent portion F is larger than the minimum allowable radius. The minimum allowable radius refers to the turning radius Φ in a state where the bending angle α of each joint 4A in the bent portion F is the maximum allowable angle. In other words, the outer diameter of the inner ring 71 is determined so that the bending angle α of each joint 4A at the bent portion F is smaller than the maximum allowable angle. That is, by making the outer diameter of the inner ring 71 larger than a predetermined value, the number of cable links 40 wound around the inner ring 71 is increased, and the bending angle α of each joint portion 4A in the bent portion F is made smaller than the maximum allowable angle. It is doing.

  The outer ring 72 is a roller-like member and is disposed in contact with the outer peripheral side of the bent portion F of the cables protection guide member 4. The outer ring 72 is rotatable around a rotation shaft 72s that is parallel to the left-right direction. The outer ring 72 is supported by the frame 73 at both ends of the rotation shaft 72s. The outer ring 72 may include a buffer member formed of rubber or the like on the outer peripheral surface thereof. By providing the buffer member, the outer ring 72 rotates without slipping with respect to the cables protection guide member 4, and the cable protection guide member 4 can be smoothly guided. In addition, there is an effect that the vibration of the cables protection guide member 4 can be suppressed.

  In addition, the outer ring 72 may be biased in a direction approaching the inner ring 71. By energizing the outer ring 72, the effect of smoothly guiding the cables protection guide member 4 is improved. Moreover, the effect that the vibration of the cables protection guide member 4 can be suppressed is also improved. Strictly speaking, this is because the outer ring 72 follows the bent portion F having a polygonal shape without leaving.

  As described above, the inner ring 71 is disposed in contact with the inner peripheral side of the bent portion F, and the outer ring 72 is disposed in contact with the outer peripheral side of the bent portion F. They are connected to each other in a sandwiched state.

  Next, the operation of the guide device 7 will be described.

  FIG. 4 shows the operation of the guide device 7 when the moving structure (shuttle unit 2) moves forward. FIG. 5 shows the operation of the guide device 7 when the moving structure (shuttle unit 2) moves backward. In addition, in the figure, the front-back direction and the up-down direction of the conveyance equipment 10 are represented.

  As described above, when the shuttle unit 2 moves forward, the cables protection guide member 4 is pulled forward by the shuttle unit 2 and the bent portion F is displaced forward. At this time, the inner ring 71 is bent at a turning radius Φ having a bending portion F larger than the minimum allowable radius by rotating in one direction around the rotating shaft 71s (by rotating counterclockwise in FIG. 4). In this state, the cables protection guide member 4 is guided. Further, the outer ring 72 also guides the cables protection guide member 4 by rotating to one side around the rotating shaft 72s (by rotating clockwise in FIG. 4). In this case, since the outer ring 72 is connected to the inner ring 71 by the frame 73, the inner ring 71 is not separated from the inner peripheral side of the bent portion F, and the turning radius Φ is larger than the minimum allowable radius. The bent state can be maintained.

  Furthermore, as described above, when the shuttle unit 2 moves rearward, the cables protection guide member 4 is pushed rearward by the shuttle unit 2 and the bent portion F is displaced rearward. At this time, the inner ring 71 is bent with a turning radius Φ larger than the minimum allowable radius by rotating to the other side around the rotation shaft 71s (by rotating clockwise in FIG. 5). In this state, the cable protection guide member 4 is guided. The outer ring 72 also guides the cables protection guide member 4 by rotating to the other side around the rotation shaft 72s (by rotating counterclockwise in FIG. 5). In this case, since the outer ring 72 is connected to the inner ring 71 by the frame 73, the inner ring 71 is not separated from the inner peripheral side of the bent portion F, and the turning radius Φ is larger than the minimum allowable radius. The bent state can be maintained.

  Thus, the guide device 7 of the cable protection guide member 4 according to the invention of the present application is such that the bending angle α of the joint portion 4A of the bent portion F in the cable protection guide member 4 arranged in a bent state is the maximum allowable angle. The inner ring 71 is disposed in contact with the inner peripheral side of the bent portion F, and the outer ring 72 is disposed in contact with the outer peripheral side of the bent portion F so as to be smaller. And the inner ring | wheel 71 and the outer ring | wheel 72 are connected in the state which pinched | interposed the cables protection guide member 4. As shown in FIG. As a result, the guide device 7 rotates with the inner ring 71 and the outer ring 72 sandwiching the cables protection guide member 4 to follow the displacement of the bent portion F, so that the inner ring 71 is moved to the inner peripheral side of the bent portion F. It can be kept in contact. Therefore, in the bent portion F of the cables protection guide member 4, the bending angle α of each joint portion 4A can always be reduced (that is, the turning radius Φ of the bent portion F can be made larger than the minimum allowable radius). It is possible to prevent the guide resistance of the cable protection guide member 4 from increasing. As a result, the moving load of the wagon 1 can always be kept low.

  Next, other characteristic points of the guide device 7 will be described.

  The guide device 7 according to the present invention includes an auxiliary wheel 74 (see FIGS. 3 to 5).

  The auxiliary wheel 74 is disposed in contact with the floor surface 6. The auxiliary wheel 74 is rotatable around a rotation shaft 74s that is parallel to the left-right direction. The auxiliary wheel 74 is supported by the frame 73 at both ends of the rotation shaft 74s. The auxiliary wheel 74 may be provided with a buffer member formed of rubber or the like on the peripheral surface thereof. By providing the buffer member, the auxiliary wheel 74 rotates without slipping with respect to the floor surface 6, and there is an effect that the shuttle unit 2 can smoothly follow the moving direction. In addition, there is an effect that the vibration of the guide device 7 can be suppressed.

  With such a structure, the guide device 7 can reliably prevent the guide resistance of the cables protection guide member 4 from increasing. As a result, the moving load of the wagon 1 can be kept low.

  In the guide device 7 according to the present embodiment, the auxiliary wheel 74 is disposed in contact with the floor surface 6. However, the auxiliary wheel 74 may be disposed in contact with the gantry 5 and the inner ring 71 and the outer ring 72 may be suspended. Even in such a structure, it is possible to reliably prevent the guide resistance of the cables protection guide member 4 from increasing, and to keep the moving load of the wagon 1 low.

  Furthermore, the guide device 7 according to the invention of the present application may include an outer ring 72 and an auxiliary wheel 74 on the same axis (see FIG. 6).

  In the case of such a structure, the outer ring 72 is arranged in contact with the outer peripheral side of the bent portion F of the cables protection guide member 4. The outer ring 72 is rotatable around a rotation shaft 72s that is parallel to the left-right direction. On the other hand, the auxiliary wheel 74 is disposed in contact with the floor surface 6. The auxiliary wheel 74 is rotatable about the rotation shaft 72 s on both the left and right sides of the outer ring 72. The outer ring 72 and the auxiliary wheel 74 are supported by the frame body 73 at both ends of the rotating shaft 72s.

  With such a structure, the guide device 7 can reliably prevent the guide resistance of the cables protection guide member 4 from increasing. As a result, the moving load of the wagon 1 can be kept low.

  In this structure, the auxiliary wheel 74 is rotatable around the rotation shaft 72 s on both the left and right sides of the outer ring 72. However, the auxiliary wheel 74 may be arranged on either the left or right side of the outer ring 72. Even in such a structure, it is possible to reliably prevent the guide resistance of the cables protection guide member 4 from increasing, and to keep the moving load of the wagon 1 low.

  Furthermore, the guide device 7 according to the invention of the present application may include a support wheel 75 (see FIGS. 1 and 7).

  In the case of such a structure, the support wheel 75 is disposed in a state in which the support wheel 75 is in contact with the lower side of the cables protection guide member 4 between the bent portion F and the shuttle unit 2. The support wheel 75 is rotatable around a rotation shaft 75s that is parallel to the left-right direction. The support wheel 75 is supported by the frame body 73 of the guide device 7.

  With such a structure, the portion located between the bent portion F and the shuttle unit 2 of the cables protection guide member 4 is supported from below by the support wheel 75, and therefore, from the bent portion F to the shuttle unit 2. The cable protection guide member 4 is hung down and does not interfere with the cable protection guide member 4 between the base end portion and the bent portion F. Thereby, the guide resistance of the cables protection guide member 4 does not increase. As a result, the moving load of the wagon 1 can be kept low.

  In this structure, the support wheel 75 is supported by the frame body 73 of the guide device 7. However, the support wheel 75 may be supported by the shuttle unit 2. Further, it may be supported by the gantry 5. Even in such a structure, since the upper cable protection guide member 4 hangs down and does not interfere with the lower cable protection guide member 4, the guide resistance of the cable protection guide member 4 does not increase, and the wagon 1 The moving load can be kept low.

DESCRIPTION OF SYMBOLS 10 Conveyance equipment 1 Wagon 2 Shuttle unit 3 Cables 4 Cable protection guide member 4A Joint part 7 Guide device 71 Inner ring 72 Outer ring 73 Frame body 74 Auxiliary wheel 75 Support wheel F Bending part α Bending angle

Claims (1)

It is a long object provided with a plurality of joint parts, and is a guide device for cables protection guide members configured to be bent in the longitudinal direction,
The inner ring arranged in contact with the inner peripheral side of the bent portion so that the bending angle of the joint portion of the bent portion of the cables protection guide member arranged in a bent state is smaller than the maximum allowable angle. When,
An outer ring disposed in contact with the outer peripheral side of the bent portion;
A pair of auxiliary wheels provided on both sides in the axial direction of the outer ring ,
The inner ring and the outer ring are connected in a state of sandwiching the cables protection guide member ,
A rotation diameter of the outer ring is smaller than a rotation diameter of the pair of auxiliary wheels;
A guide device for a cable protection guide member, wherein the outer ring is rotatably inserted into a rotation shaft of the pair of auxiliary wheels .

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