Robot

1. A robot comprising:

a first member;

a second member rotating around a primary rotational axis with respect to the first member; and

a wiring board provided to the first member and having a connection section connected to a plurality of first ends of a plurality of flat cables,

wherein the plurality of flat cables form a reel at a plurality of second ends of the plurality of flat cables and the reel is provided in the second member,

the plurality of second ends of the plurality of flat cables are fixed to the second member and wound around the primary rotational axis to form the reel,

a direction of a tension acting on the plurality of second ends of the plurality of flat cables when a tension acts on the plurality of first ends of the plurality of flat cables is different from an insertion direction of the plurality of flat cables in the connection section,

the plurality of first ends of the plurality of flat cables are connected to the connection section along a first axis parallel to the primary rotational axis,

the plurality of flat cables include at least a flat cable for a power line and a flat cable for a signal line,

the flat cable for the power line overlaps the flat cable for the signal line so as to have a larger distance than the flat cable for the signal line, and

one of an insulating member and a shield member having a shape similar to the plurality of flat cables is disposed between the flat cable for the power line and the flat cable for the signal line.

2. The robot according to claim 1 , wherein

the connection section is disposed on a first surface of the wiring board, which is a surface roughly perpendicular to the primary rotational axis, and

the insertion direction of the flat cable in the connection section is different from a direction parallel to the first surface.

3. The robot according to claim 2 , wherein the insertion direction of the plurality of flat cables in the connection section is a direction roughly perpendicular to the first surface.

4. The robot according to claim 2 , wherein a lid member having an inner wall surface opposed to the first surface is installed to the first member, and

the inner wall surface has contact with the plurality of flat cables in a vicinity of the connection section.

5. The robot according to claim 4 , wherein the connection section includes a lock lever adapted to lock the plurality of flat cables by being pressed into the connection section in the insertion direction after inserting the plurality of flat cables, and

the inner wall surface has contact with the lock lever.

6. The robot according to claim 4 , wherein the inner wall surface has concavity and convexity including a projection section projecting toward the first surface, and the projection section has contact with one of a reinforcing member, a lock lever, and the reinforcing member and/or the lock lever.

7. The robot according to claim 2 , wherein the plurality of flat cables are installed between the connection sections and the reel in an overlapping manner, and

the connection sections are arranged side by side so that longitudinal directions of the connection sections are perpendicular to an extending direction of the plurality of flat cables toward the connection sections.

8. The robot according to claim 7 , wherein

a rotational center axis of the reel and centers of the respective connection sections are aligned with each other in a planar view of the first surface.

9. The robot according to claim 1 , further comprising:

a reinforcing member harder than the plurality of flat cables disposed on a connection terminal section of the plurality of flat cables to be connected to the connection section.