US 12,409,526 B1
Electric knife sharpener
Shuchun Cai, Wenzhou (CN)
Assigned to Hangzhou Weikai e-commerce Co., Ltd., Hangzhou (CN)
Filed by Hangzhou Weikai e-commerce Co., Ltd., Hangzhou (CN)
Filed on Jan. 17, 2025, as Appl. No. 19/026,774.
Claims priority of application No. 202423272020.2 (CN), filed on Dec. 30, 2024.
Int. Cl. B24B 3/54 (2006.01)
CPC B24B 3/54 (2013.01) 9 Claims
OG exemplary drawing
 
1. A knife sharpener, comprising:
a first grinding structure, the first grinding structure comprises a plurality of first grinding wheels, each of the plurality of first grinding wheels being placed parallel to each other and configured to sharpen a knife, each of the plurality of first grinding wheels being arranged to spaced apart from each other;
a second grinding structure, the second grinding structure comprises a plurality of second grinding wheels, each of the plurality of second grinding wheels being parallel to each other and configured to sharpen the knife, each of the plurality of second grinding wheels being arranged to spaced apart from each other;
a grinding space for grinding a knife being formed between the first grinding structure and the second grinding structure;
a spacing between each adjacent pair of the plurality of first grinding wheels being greater than a thickness of at least one of the plurality of second grinding wheels;
a spacing between each adjacent pair of the plurality of second grinding wheels being greater than a thickness of at least one of the plurality of first grinding wheels, wherein the plurality of first grinding wheels and the plurality of second grinding wheels are arranged in a staggered manner;
an adjustment structure, the adjustment structure configured to drive the second grinding structure to move to adjust a depth, whereby each of the plurality of second grinding wheels is inserted into the corresponding first spacing, to adjust a grinding included angle of the grinding space to allow the grinding space to be adapted to different knives; and
a housing, the first grinding structure being arranged on the housing, the housing being provided with a sliding slot structure, the second grinding structure being slidably connected to the sliding slot structure, the second grinding structure slides in the sliding slot structure to adjust the depth to insert each of the plurality of second grinding wheels into the corresponding first spacing.