Blade-replaceable cutting tool

Patent metadata

Field	Value
Publication number	US-11045962-B2
Application number	US-201716344916-A
Country	US
Kind code	B2
Filing date	Aug 8, 2017
Priority date	Dec 27, 2016
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

The present invention provides a blade-replaceable cutting tool, which includes: a first handheld portion and a second handheld portion; the second handheld portion is rotatably connected to the first handheld portion; and further includes a blade mounting plate and a blade, the blade mounting plate is rotatably mounted to the first handheld portion; the blade is detachably mounted to the blade mounting plate. Wherein, the blade mounting plate and the blade may be replaced with a ratchet blade which is detachably and rotatably mounted to the first handheld portion.

First claim

The invention claimed is:

1. A blade-replaceable cutting tool, comprising:
a first handheld portion;
a second handheld portion rotatably connected to the first handheld portion;
a blade mounting plate rotatably mounted to the first handheld portion; and
a blade detachably mounted to the blade mounting plate;
wherein the blade mounting plate comprises:
a blade mounting plate body having a front end mounted with the blade; and
an arcuate plate provided at a rear end of the blade mounting plate body;
wherein the arcuate plate is a portion of a ratchet, which comprises:
ratchet teeth provided on an arcuate side wall of the arcuate plate; and
a ratchet tooth clearance provided between any two adjacent ratchet teeth;

wherein the second handheld portion is provided with a first buckle and/or a second buckle on a side facing the first handheld portion, which is snapped into any one of the ratchet tooth clearances;

wherein the blade mounting plate comprises:
a blade mounting plate latch provided at the front end of the blade mounting plate body and connected to a middle of the arcuate plate; and
a blade mounting plate bayonet provided between the blade mounting plate latch and the arcuate plate and having an opening direction facing the blade;
the blade comprises:
a ridge portion;
a cutting edge portion provided integrally with the ridge portion;
a blade latch provided at an edge of the blade, provided opposite to the cutting edge portion, and snapped into the blade mounting plate bayonet; and
a blade bayonet provided between the blade latch and the cutting edge portion, the blade mounting plate latch is snapped into the blade bayonet.

2. The blade-replaceable cutting tool according to claim 1 , wherein the blade mounting plate comprises:
an elastic sheet mounting notch provided on a side of the arcuate plate remote from the arcuate side wall and having an opening direction facing the blade;
the blade comprises:
a blade fixing bayonet provided opposite to the elastic sheet mounting notch.

3. The blade-replaceable cutting tool according to claim 2 , wherein the elastic sheet mounting notch comprises:
a first notch portion having an opening located on the side of the arcuate plate remote from the arcuate side wall; and
a second notch portion communicated to the first notch portion and provided perpendicular to the first notch portion.

4. The blade-replaceable cutting tool according to claim 1 , further comprising:
a first clamping plate attached and fixed to one side of the blade mounting plate; and
a second clamping plate attached and fixed to the other side of the blade mounting plate;
wherein the connection between the blade and the blade mounting plate is sandwiched between the first clamping plate and the second clamping plate.

5. The blade-replaceable cutting tool according to claim 4 , further comprising:
a first oval-shaped slot penetrating through the first clamping plate;
a second oval-shaped slot penetrating through the second clamping plate and provided opposite to the first oval-shaped slot;
a toggle lever successively passing through the first oval-shaped slot, an elastic sheet mounting notch and/or a blade fixing bayonet and the second oval-shaped slot, the toggle lever comprising a first toggle post and a second toggle post; and
an elastic sheet provided within the elastic sheet mounting notch; one end of the elastic sheet is fixed to the blade mounting plate and the other end thereof is tangent to a side wall of the first toggle post.

Assignees

• Hangzhou Great Star Ind Co Ltd
• Hangzhou Great Star Tools Co Ltd

Inventors

• Li Yueming

Classifications

• B26B5/00 Primary

  Hand knives with one or more detachable blades · CPC title

• B25B7/14

  Locking means {(B25B7/123 takes precedence)} · CPC title

• B23D21/10

  with other cutting blades or tools · CPC title

• B26D3/16

  Cutting rods or tubes transversely {(cutting tubes longitudinally B26D3/001)} · CPC title

• B25B7/12

  involving special transmission means between the handles and the jaws, e.g. toggle levers, gears · CPC title