| 摘要 |
PURPOSE:To enable large torque to be transmitted and to improve durability of a V belt and its assembly workability, by forming a smooth hollow curved surface in at least one of the peripheral edge and the internal peripheral edge of each link piece while a smooth protrusive curved surface in the opposed opening part of a V-block and constituting the V belt such that the both hollow and protrusive curved surfaces are engaged. CONSTITUTION:An endless chain 35 is formed by alternately overlapping link pieces 40, 50 and connecting end parts with a joint motion capable by connecting pins 60, and a V belt 30 is assembled by mounting the chain 35 to be fitted to an opening part from both side surfaces of V-blocks 70 so that hollow curved surfaces of the link pieces 40, 50 are fitted to protrusive curved surfaces of the V-blocks 70. Consequently, the belt, which obtains good assembly workability with no limitation of a number of sheets of the link pieces 40, 50, enables the contact area of the V-block 70 with a pulley to be large obtained. Rotating power from the input pulley is transmitted to the V-block 70, brought into friction contact with the inside of a V-groove, generating tensile force in the chain 35 through the hollow curved surface of the link piece engaged with the protrusive curved surface of said V-block. Accordingly, the V belt, which can transmit large torque, enables the improvement of durability and assembly workability to be promoted.
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