US 12,459,098 B2
Device
Toshio Shimizu, Tokyo (JP); and Kiichi Haramiishi, Tokyo (JP)
Assigned to Max Co., Ltd., Tokyo (JP)
Filed by MAX CO., LTD., Tokyo (JP)
Filed on Jul. 26, 2022, as Appl. No. 17/873,896.
Claims priority of application No. 2021-126174 (JP), filed on Jul. 30, 2021.
Prior Publication US 2023/0033175 A1, Feb. 2, 2023
Int. Cl. B25C 5/02 (2006.01); B25C 5/13 (2006.01); F16H 57/04 (2010.01)
CPC B25C 5/0285 (2013.01) [F16H 57/043 (2013.01); B25C 5/13 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A stapler, comprising:
a first planar member being a cam shaped in a plate, the first planar member having a first surface which is a cam surface; and
a second member having a second surface that forms an outer surface and is partially or wholly in contact with the first surface in a plate thickness direction of the first planar member, the second member being a cam follower,
wherein the first member and the second member are configured to operate relatively,
wherein a front surface of front and back surfaces of the first planar member is provided with a flow path of a lubricant connecting the first surface and configured by a concave groove that does not penetrate to the back surface,
wherein one end of the flow path is provided with an opening that opens toward the first surface and recessed from the front surface,
wherein an other end of the flow path communicates with an accommodating portion for the lubricant, and
wherein the opening is provided on a downstream side of a changing point of the first surface that changes in a direction in which a distance from a portion in which the cam and the cam follower come into contact with each other to a shaft for the first planar member increases.