Cable and bow
A cable tensed between a pair of large and small diameter cams of a bow and elastically deformed to generate an elastic force for rotating the pair of large and small diameter cams and a pair of string cams rotated integrally with the pair of large and small diameter cams in a reverse direction when the string is drawn to rotate the pair of large and small diameter cams are rotated. The cable has: a first high-elasticity raw thread wound around one of the pair of large and small diameter cams; a second high-elasticity raw thread wound around the other of the pair of large and small diameter cams; and a low-elasticity raw thread which connects the first high-elasticity raw thread with the second high-elasticity raw thread, the low-elasticity raw thread being elastically deformed more easily than the first high-elasticity raw thread and the second high-elasticity raw thread.
1. A cable of a bow, the bow comprising:
a pair of string cams around which a string for nocking an arrow are wound so that the pair of string cams are rotated when the string is drawn; and
a pair of cable cams configured to be rotated integrally with each of the pair of string cams,
the cable being tensed between the pair of cable cams and configured to be elastically deformed to generate an elastic force for rotating the pair of cable cams and the pair of string cams rotated integrally with the pair of cable cams in a reverse direction when the string is drawn to rotate the pair of cable cams,
the cable comprising:
a first high-elasticity raw thread wound around one of the pair of cable cams;
a second high-elasticity raw thread wound around the other of the pair of cable cams;
a low-elasticity raw thread which connects the first high-elasticity raw thread with the second high-elasticity raw thread, the low-elasticity raw thread being elastically deformed more easily than the first high-elasticity raw thread and the second high-elasticity raw thread;
a first connection pin for connecting the first high-elasticity raw thread with the low-elasticity raw thread by winding the first high-elasticity raw thread and the low-elasticity raw thread around the first connection pin; and
a second connection pin for connecting the second high-elasticity raw thread with the low-elasticity raw thread by winding the second high-elasticity raw thread and the low-elasticity raw thread around the second connection pin.
2. The cable according to claim 1 , wherein
the low-elasticity raw thread is connected with the first high-elasticity raw thread at a position separated from the one of the pair of cable cams and connected with the second high-elasticity raw thread at a position separated from the other of the pair of cable cams.
3. The cable according to claim 1 , wherein
the first high-elasticity raw thread and the low-elasticity raw thread are alternately wound in an axial direction of the first connection pin, and
the second high-elasticity raw thread and the low-elasticity raw thread are alternately wound in an axial direction of the second connection pin.
4. A bow comprising:
a pair of string cams around which a string for nocking an arrow are wound so that the pair of string cams are rotated when the string is drawn; and
a pair of cable cams around which a cable are wound so that the pair of cable cams is configured to be rotated integrally with each of the pair of string cams,
the cable comprising:
a first high-elasticity raw thread wound around one of the pair of cable cams;
a second high-elasticity raw thread wound around the other of the pair of cable cams;
a low-elasticity raw thread which connects the first high-elasticity raw thread with the second high-elasticity raw thread, the low-elasticity raw thread being elastically deformed more easily than the first high-elasticity raw thread and the second high-elasticity raw thread;
a first connection pin for connecting the first high-elasticity raw thread with the low-elasticity raw thread by winding the first high-elasticity raw thread and the low-elasticity raw thread around the first connection pin; and
a second connection pin for connecting the second high-elasticity raw thread with the low-elasticity raw thread by winding the second high-elasticity raw thread and the low-elasticity raw thread around the second connection pin, wherein
the cable is configured to be elastically deformed to generate an elastic force for rotating the pair of cable cams and the pair of string cams rotated integrally with the pair of cable cams in a reverse direction when the string is drawn to rotate the pair of cable cams.