US 12,447,643 B2
Cutting device including first blade edge portion, and second blade edge portion in which shearing angle at center portion is larger than shearing angle at end portions
Yushi Kato, Nagoya (JP); Shinji Kobayashi, Tokoname (JP); and Sho Asai, Nisshin (JP)
Assigned to BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed by BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed on May 30, 2023, as Appl. No. 18/325,414.
Claims priority of application No. 2022-088220 (JP), filed on May 31, 2022.
Prior Publication US 2023/0381991 A1, Nov. 30, 2023
Int. Cl. B26D 1/00 (2006.01); B26D 1/02 (2006.01); B26D 1/06 (2006.01); B26D 7/00 (2006.01)
CPC B26D 1/0006 (2013.01) [B26D 1/025 (2013.01); B26D 1/065 (2013.01); B26D 2001/0066 (2013.01); B26D 2007/005 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A cutting device comprising:
a frame;
a fixed blade having a substantially flat plate-like shape and fixed to the frame, the fixed blade comprising a first blade edge portion extending linearly in an extending direction;
a movable blade having a substantially flat plate-like shape, the movable blade being configured to be guided by the frame so as to be movable in a moving direction crossing the extending direction, the movable blade having one side portion and another side portion in the moving direction, the movable blade comprising:
a contacting portion provided at the another side portion of the movable blade and contacting the frame; and
a second blade edge portion provided at the one side portion of the movable blade, the second blade edge portion having a substantially valley-like shape such that a center portion in the extending direction of the second blade edge portion is positioned closer to the contacting portion than both end portions in the extending direction of the second blade edge portion are to the contacting portion, the second blade edge portion being configured to rub against the first blade edge portion to cut a cut target;
a driving mechanism configured to move the movable blade; and
a pressing member configured to urge the movable blade in a first direction from the movable blade toward the fixed blade and the frame,
wherein the second blade edge portion has a plurality of shearing angles that are inclination angles relative to the extending direction, the shearing angles including a first shearing angle that is the shearing angle at each end portion and a second shearing angle that is the shearing angle at the center portion, the second shearing angle being larger than the first shearing angle.