JP2017022823A - Cable for movable part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable for a movable part, configured to prevent unintended and unnecessary bend, without using a protective guide, and easily bent in a desired direction, without interfering with displacement of the movable part.SOLUTION: A belt-like bend regulation part 15 is integrally arranged continuously in a longitudinal direction of a cable part longitudinal direction with respect to a cable part 10 having a plurality of cable bodies, to prevent the cable part 10 from being bent with an erected side of the bend regulation part 15 facing outside, due to hard-to-deform property of the bend regulation part 15, while allowing the cable part 10 to bend with the erected side of the bend regulation part 15 facing inside, with partial elastic deformation of the bend regulation part 15. The cable part 10 receives external force, to be bent only in a direction in which the erected side of the bend regulation part 15 faces inside. One end of the cable for a movable part can be moved stably without causing unintended and unnecessary bend, while maintaining U-shaped bent state in side view.SELECTED DRAWING: Figure 1

Description

  The present invention provides a predetermined tool as a means for transmitting electric power and a control signal between a fixed part and a movable part in an apparatus in which the movable part repeatedly moves within a predetermined range with respect to the fixed part, such as a machine tool or an industrial robot. The present invention relates to a cable for a movable part used in a situation where a bent state is repeatedly generated.

  In machine tools, industrial robots, etc., it is a mechanism that performs complex work such as processing, conveyance, mounting, etc. using a mechanism part that moves relative to the fixed device body, and the mechanism part that performs such work is Although it is a movable part that moves within a predetermined range with respect to the fixed apparatus main body, in order to properly operate various mechanisms provided in such a movable part, there is a gap between the movable part and the fixed apparatus main body. They are connected by cables for supplying electric power and transmitting control signals, pipes for supplying hydraulic pressure and air pressure, and the like.

  In such an apparatus, although the cable or the like provided between the movable part and the fixed part has moderate flexibility and needs to follow the movement of the movable part, they move in a disorderly manner. Since it must be avoided that the operation of the cable is disturbed, a protection guide guide for keeping the movement of the cables in an appropriate state has been proposed. One example is disclosed in Japanese Patent Application Laid-Open No. 2003-83473.

  The conventional protective guide guide includes a flexible tube made of a synthetic resin that encloses a plurality of cables and is connected to a cable moving end portion and a cable fixed end portion, and is enclosed and fitted to the flexible tube at a predetermined interval. It is the structure which has many bending | flexion control units provided united.

  In recent years, there has been proposed a cable that can maintain a state of moving on a certain track without any problem without using such protection guides for the cables. No. 259658 and JP-A-2009-259659.

JP 2003-83473 A JP 2009-259658 A JP 2009-259659 A

  The conventional protective guide guide has a configuration shown in Patent Document 1, and the protective guide guide can move within a certain movement region while maintaining a predetermined extension posture and bending posture. By moving cables, tubes, and the like through the guide, it is possible to appropriately regulate the moving regions of these cables, tubes, and the like.

  However, since the cost of the apparatus increases due to the use of a separate protection guide guide other than the cable, the bending guide units abut against each other due to the movement of the protection guide guide accompanying the movement of the movable part, and the contact parts wear out. As a result, there was a problem that dust was generated. In addition, there has been a problem that noise is generated when the bending regulating units repeat contact and separation with each other.

  On the other hand, the conventional cables shown in Patent Documents 2 and 3 are advantageous in terms of dust and noise because the protective guide is not used, but the parallelism in the U-shaped parallel portion of the cable in the state of use is improved. As a result of adjusting the flexibility of the entire cable in order to make it possible to maintain the cable, it becomes difficult to cause a smooth bending at a position where it should be bent during movement, and the structure inside the cable is complicated and specialized. For this reason, there is a problem that the cable manufacturing cost increases.

  The present invention has been made to solve the above-mentioned problems, and an unintended unnecessary bending does not occur without using a protective guide guide, and it can be easily bent in the direction to be bent, and can move a movable part. It aims at providing the cable for movable parts which does not give trouble.

  The cable for a movable part according to the present invention includes a cable part in which a plurality of flexible cable bodies having one or more core wires are integrated in parallel in a flat belt shape, and a continuous belt-like body. The cable part and the bending restriction part are integrally connected by being interposed between one or a plurality of bending restriction parts arranged as the arrangement along the longitudinal direction of the cable part and the cable part outer periphery predetermined place and the bending restriction part. A connecting spring member, and the bending limiting portion is elastically deformed in a direction perpendicular to the wide surface of the front and back surfaces of the band-like body, but is not easily elastically deformed in a direction parallel to the wide surface. A hard belt-like core material having elastic deformability and an outer jacket made of a flexible material covering the core material, and the bending limiting portion is perpendicular to the parallel direction of the cable bodies. Allow the cable part to bend in advance so that it stands upright. The core material in the bending limiting portion is disposed at least from the center position of each cable body in the cable portion so that the core member in the bending limiting portion protrudes toward the inner circumferential side in a state bent in a predetermined direction. The bend restricting portion covering and / or the connecting member disposed between the bend restricting portion core material and the cable body is elastically disposed in a range on the bending inner peripheral side when bent in the direction. It can be expanded and contracted by deformation, and has at least an elastic deformability that allows the bend restriction part to be elastically deformed and to be restored to be parallel to the cable body parallel direction with respect to the cable part. It is.

  As described above, in the present invention, a band-like bending restriction portion is continuously arranged in the cable portion longitudinal direction integrally with a cable portion containing a core wire through which electricity or light passes, and the bending restriction portion of the cable portion is erected. Bending such that the side to be bent is outside is prevented by the property that the bending limiting portion is difficult to deform, while bending such that the side where the bending limiting portion of the cable portion stands is inside is part of the bending limiting portion. By allowing the cable part to be elastically deformed, the cable part receives an external force and is bent only in the direction in which the rising side of the bending restricting part is inward, without using a protective guide guide or the like. In the movement operation of one end of the cable within a predetermined moving area, unintended unnecessary bending does not occur in each part of the cable, and the movement of the one end is stabilized while maintaining the U-shaped bending form when viewed from the side. Can be doneFurther, even in the bent portion of the cable portion, by maintaining the state in which the bending restriction portion is continuously and integrally existing in the longitudinal direction of the cable portion, the bending restriction portion as a whole can have a lateral direction other than the direction in which the cable portion is bent. It is possible to prevent the cable portion from being deformed other than a preset bend, and to stabilize the behavior of the entire cable without rolling or meandering. Furthermore, when the predetermined middle portion of the cable shifts to the bent state or returns from the bent state, no impact is generated between the integrally-bent bending limiting portion and the cable portion, and the cable portion is not bent. The restraint at the bending limiting portion is performed in a state that is smooth and does not generate an impact, and noise is hardly generated when the cable is used.

  Further, in the cable for a movable part according to the present invention, if necessary, the bending restriction part is attached to both ends of the cable part in the cable body parallel direction via a connecting member, and the cable part is in the predetermined direction. In the bent part of the cable part in the bent state, it is shifted outward so as not to overlap the cable part until the bending limiting part is oriented parallel to the cable body parallel direction with respect to the cable part. .

  As described above, in the present invention, the bending restriction portion is provided on both sides of the cable portion, and the bending restriction portion can be deformed at the bending portion of the cable portion so that the bending restriction portion falls down to the outside of the cable portion. It can bend and follow the movable part, and in the unbent section, the bending restriction part that stands up in the direction orthogonal to the parallel direction of the cable body will restrain the cable part on both sides, except for those accompanying cable bending Can be prevented from shifting or moving, and can be prevented from being deformed in the lateral direction other than the direction in which the cable part bends, and the linear part of the cable part adopting the U-shaped bending form is maintained in its linear shape. It is easy to do, and the behavior of the cable part can be further stabilized.

  In addition, the cable for the movable part according to the present invention, as necessary, is formed by integrating the elastic tubular tubular body in parallel with the cable body at both ends in the cable body parallel direction, The bending limiting portion is attached to the tubular body of the cable portion via a connecting member.

  As described above, in the present invention, the cable portion is provided with the hollow tubular body on both sides, and the bending restriction portion is provided on the outer side of the tubular body via the connecting member. When the bending restriction part is partially deformed, the tubular part of the cable part can follow the bending restriction part and be elastically deformed. Significant deformation does not occur in the member, and it becomes difficult for the strain to concentrate on these parts, and the durability of the entire cable is improved.

  In addition, the movable part cable according to the present invention has a bent inner periphery in a state where the bending restriction part bends in the predetermined direction of the cable part at the center part of the cable part in the cable body parallel direction as necessary. Is attached to a predetermined portion on the side via a connecting member, and the cable portion is bent in a state where the cable portion is bent in the predetermined direction, and the bending limiting portion is parallel to the cable portion in the cable body. The direction is parallel to the direction, and the predetermined surface of the bending limiting portion is shifted so as to be adjacent to the cable body in which the cable portions are arranged in parallel.

  As described above, in the present invention, the bending limiting portion is provided in the inner peripheral side portion near the center in the width direction of the cable portion, so that the bending limiting portion maintains an upright state and restricts bending when not bent. When bent, the bending restriction part is deformed until it is parallel to the parallel direction of the cable body and has the property of allowing the cable part to be bent, while the bending restriction part overlaps the cable part in the bent state. It is not necessary to separately secure a space for deforming the bending restriction portion on the side of the cable portion, and the space for handling the cable can be saved.

  Further, the movable part cable according to the present invention has one or a plurality of core wires and a flexible cable body in which a plurality of flexible cable bodies are integrated in parallel in a flat belt shape, and a continuous belt-like body, One or a plurality of bending restriction portions arranged as the arrangement along the longitudinal direction of the cable portion with respect to the cable portion, and the cable portion includes a flexible hollow tubular body at both ends in the cable body parallel direction. It is integrated in parallel with the cable body, and the bending limiting portion is elastically deformed in a direction orthogonal to the wide surface of the front and back surfaces of the belt-shaped body, but is not easily elastically deformed in a direction parallel to the wide surface. The plate spring-like hard belt-like core material having elastic deformability is provided, and the bending limiting portion is disposed in the hollow portion of the tubular body of the cable portion in a direction standing up at right angles to the parallel direction of the cable body. Can move relative to the tubular body Is shall.

  As described above, in the present invention, the band-shaped bending limiting portion is disposed in the hollow portion of the tubular body on both sides of the cable portion as a direction standing at right angles to the parallel direction of the cable body, and in the hollow portion of the tubular body, By allowing elastic deformation of the bending limiting portion and displacement with respect to the tubular body, it is not necessary to secure a space for deformation of the bending limiting portion around the cable portion, and the cable along with the deformation of the bending limiting portion at the time of bending. Unreasonable deformation does not occur on the part side, distortion is less likely to occur, and the durability of the entire cable is improved. In addition, since the bending limiting portion does not appear outside, it is easy to attach a friction preventing sheet to the cable portion.

  Moreover, the cable for the movable part according to the present invention has an orientation in which the bending limiting part stands at right angles to the cable body parallel direction in a predetermined length range at both ends in the longitudinal direction of the cable as necessary. It is fixed to the cable part in the state.

  As described above, in the present invention, the end of the cable portion is fixed in a state where the bend restriction portion is raised, and the bend restriction portion is maintained at the both ends of the cable so that the bend restriction portion is not displaced with respect to the cable portion. However, it is easier to maintain the standing state with respect to the cable part starting from both ends of the cable. Thus, unintentional bending of the cable portion can be prevented more reliably, unnecessary movement of the cable can be suppressed, and the cable can be appropriately followed by the movable portion to which the cable is connected.

It is a partially cutaway side view of the cable for movable parts which concerns on the 1st Embodiment of this invention. It is a perspective view of the principal part in the linear part of the cable for movable parts which concerns on the 1st Embodiment of this invention. It is an expanded sectional view in the linear part of the cable for movable parts concerning a 1st embodiment of the present invention. It is sectional drawing in the bending part of the cable for movable parts which concerns on the 1st Embodiment of this invention. It is a bending limit part fixed state explanatory drawing in the edge part of the cable for movable parts which concerns on the 1st Embodiment of this invention. It is other cable part use condition explanatory drawing in the cable for movable parts which concerns on the 1st Embodiment of this invention. It is 1st other explanatory drawing of the member for connection in the cable for movable parts which concerns on the 1st Embodiment of this invention. It is 2nd other explanatory drawing of the member for connection in the cable for movable parts which concerns on the 1st Embodiment of this invention. It is 1st other explanatory drawing of the bending | flexion restriction | limiting part in the cable for movable parts which concerns on the 1st Embodiment of this invention. It is 2nd example explanatory drawing of the bending | flexion restriction | limiting part in the cable for movable parts which concerns on the 1st Embodiment of this invention. It is a partially cutaway side view of the cable for movable parts which concerns on the 2nd Embodiment of this invention. It is a perspective view of the principal part in the linear part of the cable for movable parts which concerns on the 2nd Embodiment of this invention. It is sectional drawing in the bending part of the cable for movable parts which concerns on the 2nd Embodiment of this invention. It is a partially cutaway side view of the cable for movable parts which concerns on the 3rd Embodiment of this invention. It is a perspective view of the principal part in the linear part of the cable for movable parts which concerns on the 3rd Embodiment of this invention. It is sectional drawing in the bending part of the cable for movable parts which concerns on the 3rd Embodiment of this invention.

(First embodiment of the present invention)
The movable part cable according to the first embodiment of the present invention will be described below with reference to FIGS.
In each said figure, the cable 1 for movable parts which concerns on this embodiment has the cable part 10 which has one or more core wires, and integrated the multiple flexible cable bodies 11 in parallel with the flat belt shape, It is a continuous belt-like body, and a plurality of bending limiting portions 15 are arranged with respect to the cable portion 10 in the longitudinal direction of the cable portion, and are interposed between a predetermined portion on the outer periphery of the cable portion 10 and the bending limiting portion 15. The connecting member 16 serving as an adhesive that integrally connects the cable portion 10 and the bending limiting portion 15 is provided.

  The cable portion 10 is configured by combining a plurality of cable bodies 11 formed by covering a core wire 11a through which electricity or light passes with a sheath 11b. A plurality of cable bodies 11 formed in a circular cross-sectional shape are connected to each other in a parallel state and integrated into a substantially band shape.

  Since the cable bodies 11 forming these cable portions 10 are connected and integrated in a parallel state, the cable bodies 11 are easily bent in a direction perpendicular to the parallel direction of the cable bodies, and are not easily bent in other directions. Yes.

  The bending limiting portion 15 is elastically deformed in a direction orthogonal to the wide surface of the front and back surfaces of the band-shaped body, but is hard to be elastically deformed in a direction parallel to the wide surface. The outer cover 15b is made of a flexible material that covers the core 15a.

  The core material 15a of the bending limiting portion 15 is made of a material that is harder than the cable portion 10 and has a leaf spring-like elastic deformability, such as metal or synthetic resin. Further, the outer jacket 15 b of the bending limiting portion 15 is made of a material that is more elastically deformable than the sheath 11 b of each cable body 11 forming the cable portion 10.

The bending limiting portion 15 is an outer periphery of each cable body 11 positioned at both ends of the cable portion 10 in the cable body parallel direction, and a bending inner periphery in a state where the cable portion 10 is bent in a predetermined direction in which bending is allowed in advance. For the connecting part which is an adhesive, the longitudinal direction is arranged along the cable part longitudinal direction and the band width direction is set to stand perpendicular to the parallel direction of the cable bodies arranged on the side portion. The structure is attached via the member 16.
The core member 15a in the bending restriction portion 15 is configured to be disposed in a range that is on the bending inner peripheral side of the cable portion 10 when the cable portion 10 is bent from the center position of each cable body.

  The outer cover 15b of the bending restriction portion 15 positioned between the core member 15a of the bending restriction portion 15 and the cable body 11 is elastically deformed in a state where the bending restriction portion 15 and the cable portion 10 are bonded and integrated with a connecting member. And has an elastic deformability that reversibly allows the core member 15a of the bending limiting portion 15 to be partly elastically deformed and become parallel to the cable body parallel direction with respect to the cable portion 10. This is a mechanism in which the bending limiting portion 15 can be shifted to the direction parallel to the cable body parallel direction with respect to the cable portion 10 without difficulty at each position in the longitudinal direction.

  The outer cover 15b of the bending limiting portion 15 is more preferably a structure that covers the core member in a state in which the movement of the core member 15a relative to the outer cover 15b is allowed. In that case, even when the bending limiting portion 15 is deformed at the bent portion of the cable portion 10 or the like, the core material 15a is appropriately moved with respect to the outer jacket 15b to cause distortion in the outer jacket 15b due to unnecessary deformation. Even after bending, the effect of strain can be avoided and durability can be improved.

  The connecting member 16 is a known adhesive that can be elastically deformed while exhibiting an adhesive function, and the bending limiting portion 15 and the cable portion 10 are integrated with each other even when the cable portion 10 is bent in the predetermined direction. It maintains the converted state.

  The cable portion 10 in which the bending limiting portion 15 is integrated is a movable portion or a fixed portion of the target device to which the movable portion cable 1 of the present embodiment is applied, that is, both ends of the movable portion cable 1. At the cable terminal portions respectively connected to the portions, the support member 17 having a predetermined length is used to fix the bending restriction portion 15 with respect to the cable portion 10 so that the bending restriction portion 15 stands in a direction perpendicular to the cable body parallel direction. (See FIG. 5).

  In this way, the bending limiting portion 15 can maintain a state in which the bending limiting portion 15 is not deformed or shifted with respect to the cable portion 10 within a predetermined length range of both ends of the cable that is normally arranged in a U-shaped bending shape when viewed from the side. It becomes easy for the restricting portion 15 to maintain the standing state with respect to the cable portion 10 starting from both ends of the cable, and the cable portion 10 is more restrained by the standing bend restricting portion 15 at the linear portion of the cable continuous from both ends of the cable. The cable unit 10 can be strengthened to prevent unintentional bending of the cable part 10 more reliably, suppress unnecessary movement of the cable, and properly follow the cable to the movable part to which the cable is connected.

  Next, the usage state of the movable part cable according to the present embodiment will be described. The movable portion cable 1 is disposed in a predetermined region in a state bent in a U shape (see FIG. 1). One end of the movable portion cable 1 is a moving end, and the other end is a fixed end, and the position of the bent portion changes corresponding to the movement of the moving end. At this time, even if an external force or the like tries to bend the cable portion 10 so that the side where the bending restriction portion 15 exists is outside, the bending restriction portion 15 that stands up with respect to the cable portion 10 is difficult to deform. Ten bends are prevented.

  On the other hand, when the cable portion 10 is bent so that the side where the bending limiting portion 15 exists is inward, corresponding to the bent state in the U-shape (see FIG. 1), Accordingly, a compressive force is applied in the longitudinal direction to the core member 15a of the bending restricting portion 15 located inside the bent portion, and the core member 15a stands up at the front and rear positions of the bent portion in order to release the compressive force. In the range of the bent part of the cable part, the cable part 10 is shifted outward so as not to overlap with the cable part 10 until the cable part 10 is parallel to the cable body parallel direction. (See FIG. 4). As a result, the bending limiting portion 15 does not restrain the cable portion 10 against bending of the cable portion 10 and allows the bending thereof.

  As a result, the cable portion 10 is bent only in a direction in which the side on which the bending limiting portion 15 exists is inside. Thus, during the movement operation of the moving end of the movable portion cable 1, unintended unnecessary bending does not occur in each portion of the movable portion cable 1, and the moving operation is performed stably.

  Further, in the bent portion of the cable portion, the bending limiting portion 15 shifts and allows bending, but as a result, the bending limiting portion 15 continues to be located in a connected state on both sides of the cable portion 10. The rigidity of the bent portion other than the point related to the bending of the cable portion is ensured, and the displacement other than the relative movement accompanying the bending of the cable portion 10, for example, the deformation in the lateral direction other than the bending direction of the cable portion 10, etc. It can be prevented.

  Furthermore, in a portion where the cable portion 10 is not bent as a straight line, the bending limiting portion 15 is maintained in an upright state and does not change its direction with respect to the cable portion 10, and the moving operation of the moving end of the movable portion cable 1 is performed. At this time, the linear shape of the cable portion 10 that takes the U-shaped bending form can be easily maintained, and the behavior of the cable portion 10 can be stabilized.

  A strong force is applied to the connecting portion between the bending limiting portion 15 and the cable portion 10 that shifts at the bending portion of the cable portion 10, but the bending limiting is located between the core material 15 a of the bending limiting portion 15 and the cable portion 10. It is possible to cope with the situation in which the outer cover 15b of the portion 15 is appropriately expanded and contracted and the core material 15a is deformed and shifted, the cable portion 10 and the bending limiting portion 15 can be reliably maintained in a connected state, and repeated bending accompanying movement The bending limiting portion 15 is not separated from the cable portion 10 by the stress caused by the above, and the bending limiting portion 15 can maintain the function of limiting the bending direction to the life of the cable portion 10.

  As described above, in the cable for the movable part according to the present embodiment, the band-shaped bending limiting part 15 is continuously provided in the longitudinal direction of the cable part in parallel with the cable part 10 containing the core wire through which electricity and light pass. Bending of the cable portion 10 such that the side where the bending limiting portion 15 stands is outside is prevented by the property of the bending limiting portion 15 that is difficult to deform, while the bending limiting portion 15 of the cable portion 10 Bending such that the rising side is on the inner side is allowed in a form accompanied by elastic deformation of a part of the bending limiting portion 15, so that the cable portion 10 in a state of receiving an external force is on the side where the bending limiting portion 15 stands. Will be bent only in the direction facing the inside, and even without using a protective guide or the like, unintentional unnecessary bending will not occur during the movement operation of one end of the cable for the movable part within a predetermined movement area, Seen from U While maintaining the bending form, the movement of the end portion can be stably performed.

  Further, even when the cable portion 10 is bent, by maintaining the state where the bending restriction portion 15 is continuous in the longitudinal direction of the cable portion, the bending restriction portion as a whole can have a lateral direction other than the direction in which the cable portion 15 is bent. It is possible to prevent the cable portion 10 from being deformed other than a preset bend, and to stabilize the behavior of the cable portion 10 without rolling or meandering. In addition, the installation space can be further reduced by the amount that the protection guide guide is unnecessary, and the cost required for the protection guide guide can be reduced.

  In addition, in the cable for movable parts which concerns on the said embodiment, although the five cable bodies 11 are integrated in parallel and set as the strip | belt-shaped cable part 10, it is not restricted to this, A plurality of cable bodies other than five are used. A configuration in which the cables are integrated in parallel is also possible.

  Further, in the cable for the movable portion according to the embodiment, the bending limiting portion is connected and integrated with the cable body located at the end of the cable portion 10 in the cable body parallel direction, and only the bending of the cable portion in a predetermined direction is allowed. In addition to this, as shown in FIG. 6, the cable portion 10 is integrated at both ends in the cable body parallel direction, and a hollow tubular body 13 that is elastically deformable is integrated in parallel with the cable body 11. In addition to the structure, the bending limiting portion can be attached to the tubular body 13 at the end of the cable portion 10 via a connecting member.

  In this case, when the bending restricting portion 15 is partially deformed along with the bending of the cable portion 10, the tubular body 13 portion of the cable portion 10 can follow the bending restricting portion 15 and be elastically deformed. When the restricting portion 15 is deformed, the outer cover 15b of the bend restricting portion 15 and the connecting member are not significantly deformed, and the strain is less likely to concentrate on these portions, thereby improving the durability of the entire cable.

  Further, in the movable part cable according to the embodiment, the connecting member 16 is configured to be an elastically deformable adhesive that bonds and connects the bending limiting part 15 and the cable part 10. Not limited to this, as shown in FIG. 7, the connecting member 18 has an adhesive function, and mainly expands and contracts between the bending limiting portion 15 and the cable portion 10 in response to the deformation or shift of the bending limiting portion 15. The elastic member of a predetermined size can be used, and the elastic deformation performance of the outer cover 15b of the bending limiting portion 15 is reduced, so that the cost is reduced by the amount that the connecting member 18 is subjected to expansion / contraction deformation. I can plan. In this case, the connecting member 18 has a deformation performance that allows a shift until the bending limiting portion and the cable portion are parallel to the cable body parallel direction with respect to the cable portion of the bending limiting portion. Anything is acceptable. In addition, the configuration in which the connecting member that expands and contracts between the bending restriction portion 15 and the cable portion 10 is left as it is, and the connecting member 19 does not have an adhesive function. As shown in FIG. The connecting member 19, the bending limiting portion 15, and the cable portion 10 may be bonded and integrated with each other using the above.

  Further, in the movable portion cable according to the embodiment, in the bending limiting portion 15, the outer cover 15b made of a material excellent in elastic deformability uniformly covers the core material 15a, and the bending portion of the cable portion 10 Along with the deformation of the core material 15a, the portion of the outer cover 15b located between the core material 15a and the cable portion 10 is appropriately expanded and contracted, and the bending limiting portion 15 is shifted outward from the cable portion 10. For example, the material of the inner portion 15d close to the cable portion 10 of the outer cover 15c and the outer portion 15e away from the cable portion 10 are different from each other (see FIG. 9), the inner portion of the jacket 15f near the cable portion 10 is made different from the thickness of the outer portion (see FIG. 10), and the inner portion of the jacket 15f is separated from the cable portion and the cable portion. Outside It is also possible to make the portion located between the core material 15a of the jacket and the cable portion 10 elastically deformable more smoothly, and the bending limiting portion 15 as a whole generates strain due to bending. And the durability can be improved.

(Second embodiment of the present invention)
A movable part cable according to a second embodiment of the present invention will be described with reference to FIGS.
In each of the drawings, the movable portion cable 2 according to the present embodiment includes the cable portion 20, the bending limiting portion 25, and the connecting member 26 as in the first embodiment. A configuration in which the two bending limiting portions 25 are arranged in a standing state at a predetermined portion on the bending inner peripheral side in a state where the cable portion 20 is bent in a predetermined direction, in the central portion of the cable portion 20 in the cable body parallel direction. It is what has.

  As in the first embodiment, the cable portion 20 includes a plurality of cable bodies 21 having a circular cross-section formed by covering a core wire 21a through which electricity and light pass with a sheath 21b, in a state where a plurality of cable bodies 21 are arranged in parallel. It is the structure which connected and integrated in the substantially strip | belt shape.

  As in the first embodiment, the bending limiting portion 25 is elastically deformed in a direction perpendicular to the wide surface of the front and back surfaces of the belt-like body, but is not easily elastically deformed in a direction parallel to the wide surface. The belt-shaped core member 25a and the outer cover 25b made of a material excellent in elastic deformation covering the core member 25a.

  This bend restricting portion 25 is an outer periphery of the cable body 21 located at the central portion of the cable portion 20 in the cable body parallel direction, and an inner periphery of the bend in a state where the cable portion 20 is bent in a predetermined direction in which bending is allowed in advance. In the part which becomes the side, the longitudinal direction is arranged along the longitudinal direction of the cable part, and the band width direction is a direction that stands up at right angles to the parallel direction of the cable bodies 21 arranged in a plurality, and is connected by an adhesive It is the structure attached through the member 26 for use. In addition, the core member 25a in the bending restriction portion 25 is located in a range that is on the bending inner peripheral side when the cable portion 20 is bent from the center position of each cable body in the cable portion 20 as in the first embodiment. To do.

  Based on such a structure, in the range of the bent portion of the cable portion 20 in a state where the cable portion 20 bends in the predetermined direction, the bending limiting portion 25 is oriented in parallel to the cable body parallel direction with respect to the cable portion 20, One side surface of the bending limiting portion 25 is shifted so as to be adjacent to the bending inner peripheral side portion of the cable body 21 in which the cable portion 20 is arranged in parallel.

  The outer cover 25b of the bending restriction portion 25 located between the core member 25a of the bending restriction portion 25 and the cable body 21 is partially deformed with respect to the cable portion 20 because the core member 25a of the bending restriction portion 25 is elastically deformed. It is assumed that it has elastic deformability that allows it to be restored in a direction parallel to the cable body parallel direction, and the bending restricting portion 25 can be comfortably placed in the cable body parallel direction with respect to the cable portion 20 at each position in the longitudinal direction. It is a mechanism that can shift to parallel directions.

  The outer cover 25b of the bending limiting portion 25 is preferably a structure that covers the core member in a state that allows the movement of the core member 25a with respect to the outer cover 25b, as in the first embodiment. Also for 25a, a structure capable of absorbing a change in relative position with the outer jacket 25b in the longitudinal direction thereof, for example, a core material having a leaf spring-like elastic deformability with a predetermined length sufficiently shorter than the entire length of the bending limiting portion 25. The core material itself is formed by overlapping a plurality of thin plate bodies shown in the longitudinal direction and adding them in the longitudinal direction, or forming a shape that repeatedly curves in the longitudinal direction at predetermined intervals. It can also be set as the structure which provided predetermined elasticity. In this case, while ensuring the shape maintaining performance in the straight portion of the cable, the bending limiting portion 25 can be deformed and shifted without difficulty in the bent portion of the cable portion 20, and smooth deformation in the bent portion of the cable can be realized. By suppressing the generation of strain due to deformation, the influence of strain can be avoided even after bending, and durability can be improved.

  The connecting member 26 that bonds and integrates the bending limiting portion 25 and the cable portion 20 is a known adhesive that can be elastically deformed as in the first embodiment, and the cable portion 20 bends in the predetermined direction. Even in the state, the integrated state of the bending limiting portion 25 and the cable portion 20 is maintained.

  The cable part 20 in which the bending restriction part 25 is integrated is connected to the cable part 20 by using a support member (not shown) having a predetermined length at both ends of the movable part cable 2 as in the first embodiment. On the other hand, the bending limiting portion 25 can be fixed in a state in which the bending limiting portion 25 is set to stand at a right angle to the cable body parallel direction. In this case, since the bending limiting portion 25 can maintain a state in which the bending limiting portion 25 is not deformed or shifted with respect to the cable portion 20 at both ends of the cable, the cable by the bending limiting portion 25 standing up at the linear portion of the cable continuous from both ends of the cable. The restraint of the portion 20 can be made stronger, the unintended bending of the cable portion 20 can be surely prevented, and unnecessary movement of the cable can be suppressed.

  Next, the usage state of the movable part cable according to the present embodiment will be described. Similar to the first embodiment, the movable portion cable 2 is arranged in a predetermined region in a bent state in a U shape, and has one end as a moving end and the other end as a fixed end. The position of the bent portion is changed in response to the movement of. At this time, even if an external force or the like tries to bend the cable part 20 so that the side where the bending restriction part 25 exists is outside, the standing bending restriction part 25 is not deformed so as to allow bending. The bending of the cable portion 20 is prevented.

  On the other hand, when the cable portion 20 is bent so that the side where the bending limiting portion 25 exists is inward, corresponding to the bent state in the U shape (see FIG. 11), Accordingly, a compressive force is applied in the longitudinal direction to the core member 25a of the bend restricting portion 25 located inside the bent portion. In order to release this compressive force, the core member 25a stands up at the front and rear positions of the bent portion. In the range of the bent part of the cable part, the cable part 20 is shifted so as to overlap with the cable part 20 until it becomes parallel to the cable body parallel direction in the range of the bent part of the cable part (see FIG. 13). Thereby, the bending restriction part 25 does not restrain the cable part 20 against the bending of the cable part 20 and allows the bending.

  As a result, the cable portion 20 is bent only in a direction in which the side on which the bending limiting portion 25 exists is inside. In this way, during the movement operation of the moving end of the movable part cable 2, unintended unnecessary bending does not occur in each part of the movable part cable 2, and the movement operation is performed stably.

  Further, in the bent portion of the cable portion, the bending limiting portion 25 shifts and allows bending, but the bending limiting portion 25 continues to be located in a connected state on the inner bending side of the cable portion 20. The rigidity other than the point related to the bending of the cable portion in the bent portion is ensured, and deformation other than the relative movement accompanying the bending of the cable portion 20 can be prevented.

  Further, in a portion where the cable portion 20 is not bent in a straight line, the bending limiting portion 25 is maintained in an upright state and does not change its direction with respect to the cable portion 20, and the moving end of the movable portion cable 2 is moved. The linear shape of the linear portion of the cable portion 20 can be easily maintained, and the behavior of the cable portion 20 can be stabilized.

  A strong force is applied to the connecting portion between the bending limiting portion 25 and the cable portion 20 that shifts at the bending portion of the cable portion 20, but the core material 25a of the bending limiting portion 25 and the cable portion are the same as in the first embodiment. 20 can cope with a situation in which the outer cover 25b of the bending restriction portion 25 located between the two is appropriately stretched and deformed and the core material 25a is deformed and shifted, and the cable portion 20 and the bending restriction portion 25 reliably maintain a connected state. In addition, it is possible to prevent the bending limiting portion 25 from being separated from the cable portion 20 due to stress due to repeated bending accompanying movement.

  As described above, in the movable portion cable according to the present embodiment, since the bending restriction portion 25 is provided in the bending inner peripheral portion near the center in the width direction of the cable portion 20, the bending restriction portion 25 stands up when not bent. While maintaining the state and restricting the bending, the bending restricting portion 25 is shifted until the orientation is parallel to the parallel direction of the cable body, and the bending of the cable portion 20 is allowed while bending. In this state, the bending restriction portion 25 overlaps the cable portion 20, and it is not necessary to separately secure a space for deforming the bending restriction portion on the side of the cable portion 20. I can plan.

(Third embodiment of the present invention)
A movable part cable according to a third embodiment of the present invention will be described with reference to FIGS.
In each said figure, the cable 3 for movable parts which concerns on this embodiment is provided with the cable part 30 and the bending | flexion restriction | limiting part 35 similarly to the said 1st Embodiment, On the other hand, it is set as a continuous strip | belt-shaped body. The bending limiting portion 35 has a configuration that is disposed in the hollow portion of the tubular body 32 provided at both ends of the cable portion 30 in the cable body parallel direction.

  As in the first embodiment, the cable portion 30 includes a plurality of circular cross-section cable bodies 31 formed by covering a core wire 31a through which electricity and light are passed with a sheath 31b. It is the structure which connected and integrated in the substantially strip | belt shape.

  However, the cable portion 30 has a structure in which a flexible hollow tubular body 32 is integrated in parallel with the cable body 31 at both ends in the cable body parallel direction. The tubular body 32 is made of a material having an elastic deformability equivalent to that of the sheath 31 b of each cable body 31 forming the cable portion 30.

  The bending restricting portion 35 is a hard belt-like body that is elastically deformed in a direction perpendicular to the wide surfaces of the front and back surfaces of the belt-like body, but is not easily elastically deformed in a direction parallel to the wide surface. It is disposed in the hollow portion of the tubular body 32 of the cable portion 30 in a direction standing up at a right angle to the direction, and can be moved relative to the tubular body 32. The bending limiting portion 35 is made of a material that is harder than the cable portion 30 and has a leaf spring-like elastic deformability, such as metal or synthetic resin.

  The bending limiting portion 35 is disposed in the hollow portion of the tubular body 32 as the entire length of the cable portion 30, and is arranged along the cable portion longitudinal direction with respect to the cable portion 30 as in the first embodiment. It becomes.

  Based on such a structure, the bending limiting portion 35 is in the cable body parallel direction with respect to the cable portion 30 in the range of the bent portion of the cable portion 30 in a state where the cable portion 30 is bent in a predetermined direction in which bending is allowed in advance. It shifts so that it becomes the direction parallel to.

  The tubular body 32 of the cable part 30 positioned around the bending restriction part 35 is bent restriction such that the bending restriction part 35 is partially elastically deformed and becomes parallel to the cable body parallel direction. The relative movement in the hollow portion of the portion 35 is allowed, and the bending limiting portion 35 can be shifted to the direction parallel to the cable body parallel direction with respect to the cable portion 30 without difficulty at the bending portion of the cable portion 30. It is a mechanism.

  The cable portion 30 in which the bending limiting portion 35 is housed in the hollow portion of the tubular body 32 uses a support member (not shown) having a predetermined length at both ends of the movable portion cable 3 as in the first embodiment. Thus, the bending limiting portion 35 can be fixed to the cable portion 30 in a state of being perpendicular to the cable body parallel direction. In this case, the bend restricting portion 35 can be maintained at the both ends of the cable so as not to be deformed or shifted with respect to the cable portion 30. Can be strengthened, the unintentional bending of the cable portion 30 can be reliably prevented, and unnecessary movement of the cable can be suppressed.

  Next, the usage state of the movable part cable according to the present embodiment will be described. Similar to the first embodiment, the movable portion cable 3 is disposed in a predetermined region in a bent state in a U shape, and has one end as a moving end and the other end as a fixed end. The position of the bent portion is changed in response to the movement of. At this time, even if an external force or the like tries to bend the cable portion 30 in a direction other than a preset direction, the bending restriction portion 35 in the standing state is not deformed so as to allow bending, and the cable portion 30 Bending is prevented.

  On the other hand, when the cable part 30 is bent in a predetermined direction orthogonal to the cable body parallel direction corresponding to the state bent in the U-shape (see FIG. 14), the cable part 30 is bent as the cable part 30 is bent. A compressive force is applied to the restricting portion 35 in the longitudinal direction. In order to release the compressive force, the bend restricting portion 35 is deformed so as to be twisted from an upright position at the front and rear positions of the bent portion. In the range of the bent portion, the tubular body hollow portion of the cable portion 30 is shifted until it becomes parallel to the cable portion 30 in the cable body parallel direction (see FIG. 16). As a result, the bend restricting portion 35 does not restrain the cable portion 30 with respect to the bend of the cable portion 30 and allows the bend.

  As a result, the cable portion 30 is bent only in a predetermined direction set in advance. In this way, during the movement operation of the moving end of the movable part cable 3, unintended unnecessary bending does not occur in each part of the movable part cable 3, and the movement operation is performed stably.

  In addition, in the bent portion of the cable portion, the bending limiting portion 35 shifts and allows bending, but the state in which the bending limiting portion 35 exists in the tubular body hollow portion of the cable portion 30 does not change. The rigidity other than the point related to the bending of the cable portion in the bent portion is ensured, and deformation other than the relative movement accompanying the bending of the cable portion 30 can be prevented.

  Further, in a portion where the cable portion 30 is not bent as a straight line, the bending limiting portion 35 is maintained in an upright state and does not change its direction with respect to the cable portion 30, and the moving end of the movable portion cable 3 is moved. The linear shape of the linear portion of the cable portion 30 can be easily maintained, and the behavior of the cable portion 30 can be stabilized.

  As described above, in the cable for the movable portion according to the present embodiment, the band-shaped bending limiting portion 35 is oriented so as to stand perpendicular to the parallel direction of the cable body 31 in the hollow portion of the tubular body 32 on both sides of the cable portion. Since the elastic deformation of the bending limiting portion 35 and the displacement with respect to the tubular body 32 are allowed in the hollow portion of the tubular body 32, the space for deformation of the bending limiting portion 35 is not secured around the cable portion 30. At the same time, an unreasonable force is not applied to the cable portion 30 side with the deformation of the bending limiting portion 35 at the time of bending, so that distortion hardly occurs and the durability of the entire cable is improved. Furthermore, since the bending limiting portion 35 does not appear outside, it is easy to attach a friction preventing sheet to the cable portion 30 and a countermeasure against wear due to friction can be simplified.

  In the cable for the movable part according to each of the first to third embodiments, the cable part is formed by connecting simple circular cross-section cable bodies in a parallel state to be integrated into a band shape, but also after integration. Most of the circular cross-sectional shape of each cable body is maintained as it is so that each cable body can be distinguished from each other. However, the present invention is not limited to this, and the cable portion is a cable having a polygonal cross-sectional shape such as a square. The entire cable section is shaped like a flat belt so that the cross-sectional shape of each cable body cannot be identified after integration. It does not matter as a structure formed in other cross-sectional shapes, such as a shape.

1, 2, 3 Cable for movable part 10, 20, 30 Cable part 11, 21, 31 Cable body 11a, 21a, 31a Core wire 11b, 21b, 31b Sheath 13, 32 Tubular body 15, 25, 35 Bending restriction part 15a , 25a Core material 15b, 25b Outer coating 16, 26 Connecting member 17 Support member 18, 19 Connecting member 19a Adhesive

Claims (6)

A cable portion having one or more core wires and a flexible cable body integrated in parallel in a flat strip shape; and
It is a continuous band-like body, and one or a plurality of bending limiting portions arranged as an arrangement along the cable portion longitudinal direction with respect to the cable portion,
A connecting member for connecting the cable portion and the bending restriction portion integrally, interposed between the cable portion outer periphery predetermined portion and the bending restriction portion;
The bending limiting portion is elastically deformed in a direction perpendicular to the wide surface of the front and back surfaces of the belt-like body, but is hard to elastically deform in a direction parallel to the wide surface, and has a leaf spring-like elastic deformability. And a jacket made of a flexible material covering the core material,
The bending limiting portion is disposed so as to protrude to the bending inner peripheral side in a state where the cable portion bends in a predetermined direction in which bending is allowed in advance in a direction standing at right angles to the parallel direction of the cable body,
The core material in the bending restriction portion is disposed in a range that is at the bending inner peripheral side in a state of bending in the predetermined direction of the cable portion from at least the center position of each cable body in the cable portion,
The outer wall of the bending restriction portion and / or the connecting member positioned between the core material of the bending restriction portion and the cable body can be expanded and contracted by elastic deformation, and the bending restriction portion is partially elastically deformed. A cable for a movable part, characterized in that it has at least an elastic deformability that allows the cable part to be parallel to the cable body parallel direction. In the movable part cable according to claim 1,
The bending limiting portion is attached to both ends of the cable portion in the cable body parallel direction via a connecting member,
In the bent part of the cable part in the state where the cable part is bent in the predetermined direction, the outer side that does not overlap the cable part until the bending restriction part is oriented parallel to the cable body parallel direction with respect to the cable part A cable for a movable part characterized by shifting to. In the cable for movable parts according to claim 2,
The cable part is formed by integrating an elastically deformable hollow tubular body in parallel with the cable body at both ends in the cable body parallel direction,
The movable part cable is characterized in that the bending limiting part is attached to the tubular body of the cable part via a connecting member. In the movable part cable according to claim 1,
The bending limiting portion is attached to a predetermined portion on the bending inner peripheral side in a state where the cable portion is bent in the predetermined direction at the center portion in the cable body parallel direction in the cable portion via a connecting member,
In the bent portion of the cable portion in a state where the cable portion is bent in the predetermined direction, the bending limit portion is in a direction parallel to the cable body parallel direction with respect to the cable portion, and the predetermined surface of the bending limit portion is A cable for a movable part, wherein the cable part is shifted so as to be adjacent to a cable body in which the cable parts are arranged in parallel. A cable portion having one or more core wires and a flexible cable body integrated in parallel in a flat strip shape; and
It is a continuous band-like body, and includes one or a plurality of bending limiting portions arranged as the arrangement along the cable portion longitudinal direction with respect to the cable portion,
The cable part is formed by integrating a flexible hollow tubular body in parallel with the cable body at both ends in the cable body parallel direction,
The bending limiting portion is elastically deformed in a direction perpendicular to the wide surface of the front and back surfaces of the belt-like body, but is hard to elastically deform in a direction parallel to the wide surface, and has a leaf spring-like elastic deformability. And is made of
The movable part characterized in that the bending limiting part is disposed in the hollow part of the tubular body of the cable part in a direction standing at a right angle with respect to the parallel direction of the cable body, and is movable relative to the tubular body. Cable. In the cable for movable parts according to any one of claims 1 to 5,
The movable part is fixed to the cable part in a state in which the bending limiting part is set to stand at a right angle to the cable body parallel direction in a predetermined length range at both ends in the longitudinal direction of the cable. Cable.

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