| 摘要 |
PURPOSE:To suppress the generation of noise and easily inspect a power transmission belt by installing a cover plate onto a cover in demountable ways through a shock absorbing member. CONSTITUTION:An opened port 22 is formed onto the outside surface of the center part of a cover 22, and a shock absorbing memeber 41 consiting of a soft elastic body is installed onto the all periphery of the opened port 22. A cover 40 having rigidity is installed in demountable ways onto the cover 22 through the shock absorbing member 41. Since, with such constitution, the amplitude difference and the phase difference of vibration are generated between the cover 22 and the cover plate 40 installed onto the cover 22 through the shock absorbing member 41, the repetive flexion is generated on the shock absorbing member 41, and vibration energy is absorbed through the internal friction. Therefore, the generation of noise can be suppressed. Further, a power transmission belt 33 can be inspected easily by only demounting the cover plate 40 and the shock absorbing member 41. |
