| 摘要 |
<p>The present invention provides a wheel cylinder spreader including a main body, a rod, a holding portion, and a control portion. An elongated toothed element is formed on the rod, and a leaning element is disposed on the holding portion. The holding portion can drive the rod to move due to the attachment of the leaning element and the elongated toothed element. Because the contact area of the elongated toothed element and the leaning element is larger and the transmission of force is more direct, the frequency of squeezing the holding portion is decreased and the driving efficiency is promoted. Also, the slipping and the abrasion of the elongated toothed element and the leaning element are prevented. Otherwise, when the rod is not leant by the control portion, the rod tends to move toward a specific direction due to a reposition elastic element.</p> |
