Multijoint cable protection and guide device
The invention provides a multijoint cable protection and guide device that steadily protects and guides cables and the like that assume flexed and straight postures. The device includes a flexible belt member in which a plurality of center tubular portions through which cables are inserted and a pair of right and left side tubular portions disposed in parallel along the center tubular portions. The center tubular portions and the pair of right and left side tubular portions are integrally molded. A pair of right and left multijoint supporting members is inserted through side tubular portions of the flexible belt member. The multijoint supporting member is composed of a large number of block bodies that are flexibly connected together by concave-convex fittings.
1. A multijoint cable protection and guide device, comprising:
a flexible belt member;
said flexible belt member includes a plurality of center tubular portions;
said flexible belt member includes a pair of right and left side tubular portions;
said right and left side tubular portions reside adjacent to and in parallel with said plurality of said center tubular portions;
said center tubular portions being integral with said pair of right and left side tubular portions;
cables are inserted respectively through said center tubular portions of said flexible belt member;
right and left multijoint supporting members;
said right multijoint supporting member resides in said right side tubular portion;
said left multijoint supporting member resides in said left side tubular portion;
said right and left multijoint supporting members include a plurality of block bodies;
each of said block bodies includes a front side and a rear side;
said front side of each of said block bodies includes first and second convex portions to flexibly connect one block body to a succeeding block body, said first convex portion is a first connecting pin and said second convex portion is a second connecting pin;
said rear side of each of said block bodies includes first and second concave portions to flexibly connect one block body to a preceding block body, said first concave portion is a first connecting pin hole and said second concave portion is a second connecting pin hole;
said rear side of each of said block bodies defines a slotted portion configured to receive said front side of a succeeding block body such that said block bodies are flexibly connected to succeeding and preceding block bodies by concave-convex snap-fittings of said first connecting pin and said first connecting pin holes and concave-convex snap-fittings of said second connecting pin and said second connecting pin holes so that said right and left multijoint supporting members guide said cables residing in said center tubular portions, between straight and flexed postures;
said front side of each of said block bodies includes a first straight posture holding plane located at a bottom of said front side;
said rear side of each of said block bodies includes a second straight posture holding plane located inside of said slotted portion of said rear side;
said first and second straight posture holding planes are configured to position preceding and succeeding block bodies and to hold them in a straight state by vertically butting together; and,
each of said block bodies includes a solid portion blocking said slotted portion to receive a force applied between said first and second straight posture holding planes.
2. The multijoint cable protection and guide device according to claim 1 ,
wherein said flexible belt member having a stretchable layer whose front and back surfaces are laminated by fluorine resin layers.
3. The multijoint cable protection and guide device according to claim 1 , wherein
said rear side of each of said block bodies includes a first tapered cutaway portion in communication with said first connecting pin hole and said rear side of each of said block bodies includes a second tapered cutaway portion in communication with said second connecting pin hole, and,
said first and second connecting pins of said front side of each of said block bodies slidably engage said first and second tapered cutaway portions in communication with said first and second connecting pin holes of said rear side of an adjacent block body, respectively, such that said first and second connecting pins of said front side of one block body respectively engage and reside in said first and second connecting pin holes of a preceding block body.
4. The multijoint cable protection and guide device according to claim 3 , wherein:
said rear side of each of said block bodies includes a first side surface defining said slotted portion, wherein said first connecting pin hole is formed in said first side surface,
said rear side of each of said block bodies includes a second side surface defining said slotted portion, wherein said second connecting pin hole is formed in said second side surface, and,
said first and second tapered cutaway portions continuously extend from said first and second connecting pin holes to said first and second rear side surfaces, respectively.
5. The multijoint cable protection and guide device according to claim 1 , wherein:
each of said block bodies includes an exterior surface, and,
said exterior surface of said block bodies includes first and second flexed posture holding planes for holding said block bodies in a flexed state.
6. The multijoint cable protection and guide device according to claim 4 , wherein:
each of said block bodies includes an exterior surface, and,
said exterior surface of said block bodies includes first and second flexed posture holding planes for holding said block bodies in a flexed state.