Snap ring having multiple rollers

摘要

Disclosed herein is a snap ring which is configured such that pressure which is applied from a purse line to the snap ring or multiple rollers is distributed to two rollers rather than being focused on one roller. A first side part and a second side part of a frame are formed diagonally such that the purse line that is disposed on the first side roller or the second side roller is easily moved towards an intermediate roller along the first side part or the second side part. Thereby, pressure which is applied from the purse line to the snap ring or the multiple rollers can be evenly distributed to the first side roller and the intermediate roller or to the second side roller and the intermediate roller rather than being focused on only one roller. As a result, the lifetime of the snap ring can be increased.

主权项

1. A snap ring, comprising:
a frame comprising: a first side part; a second side part disposed facing the first side part and connected to the first side part; and a space defined between the first side part and the second side part so that a purse line is placed in the space; and multiple rollers comprising: an intermediate roller disposed in a lower end of the space to span a lower end of the first side part and a lower end of the second side part; a first side roller disposed above a first end of the intermediate roller, the first side roller extending along the first side part; and a second side roller disposed above a second end of the intermediate roller, the second side roller extending along the second side part, wherein the lower ends of the first and second side parts are oriented diagonally in such a way that the distance therebetween is increased from a bottom end to a top end, and a distance between the first side roller and the second side roller is reduced towards the lower end of the space, so that the purse line disposed on the first side roller or the second side roller smoothly slides down towards the intermediate roller along the first side part or the second side part that are oriented diagonally.