Endoscope valve for controlling fluid

摘要

According to the present invention, an endoscope valve is provided that comprises a cylinder, a cylinder liner, a piston, and a sleeve. The cylinder has a groove on a lateral surface of the cylinder. The cylinder liner has a cylindrical shape and is inserted into an inner circumference of the cylinder. The piston is inserted into an inner circumference of the cylinder liner. The sleeve has a sleeve rib, a sleeve skirt, and a pin. The sleeve rib covers at least part of an open end of the cylinder. The sleeve skirt covers at least part of a circumferential surface of the open end. The pin projects from the sleeve skirt towards the circumferential surface to engage with the groove. The cylinder liner has a rib that projects radially outward from a circumference of the cylinder liner. The sleeve rib holds the rib on the open end in the case that the pin engages with the groove.

主权项

1. A endoscope valve comprising:
a cylinder that has a groove on a lateral surface of the cylinder; a cylinder liner that has a cylindrical shape and is positioned within an inner circumferential surface of the cylinder; a piston that is positioned within an inner circumferential surface of the cylinder liner; a sleeve that has a sleeve rib, a sleeve skirt, and a pin, the sleeve rib covering at least part of an open end of the cylinder, the sleeve skirt covering at least part of a circumferential surface of the open end of the cylinder, and the pin projecting from the sleeve skirt towards the circumferential surface to engage with the groove; the cylinder liner has a rib that projects from a circumferential surface of the cylinder liner radially in an outward direction an elastic body provided between the sleeve rib and the rib, in an axial direction of the cylinder; a holder provided on a lateral surface of the cylinder liner and engages the sleeve rib, the elastic body biases the sleeve rib in a direction that is opposite to the open end of the cylinder, so as to engage the sleeve rib with the holder; and the sleeve rib holds the rib on the open end of the cylinder when the pin engages the groove.