Reciprocating saw

Patent metadata

Field	Value
Publication number	US-11577423-B2
Application number	US-202117499866-A
Country	US
Kind code	B2
Filing date	Oct 13, 2021
Priority date	Oct 16, 2020
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

A reciprocating saw comprises a housing, a blade assembly, a reciprocating rod assembly, a driving assembly and an operation mechanism. The blade assembly extends forward from one side of the housing, and comprises a positioning structure. The reciprocating rod assembly is detachably connected with the blade assembly and comprises a blade fixing structure and an unlocking component matched with the positioning structures. The driving assembly is accommodated in the housing, and drives the reciprocating rod assembly to drive the blade assembly to perform reciprocating motion. The operation mechanism is installed on the housing and moves between a locking position and an unlocking position and comprises an operation button, a drive cam matched with the unlocking components and an elastic reset component for resetting the operation button.

First claim

What is claimed is:

1. A reciprocating saw, comprising:
a housing;
a blade assembly extending forward from one side of the housing, the blade assembly including a positioning structure;
a reciprocating rod assembly, the reciprocating rod assembly and the blade assembly being detachably connected, and the reciprocating rod assembly including a blade fixing structure coupled with the positioning structure and an unlocking component;
a driving assembly accommodated in the housing, the driving assembly driving the reciprocating rod assembly to drive the blade assembly to perform reciprocating motion; and
an operation mechanism, the operation mechanism being installed on the housing and moving between a locking position and an unlocking position, the operation mechanism including an operation button, a drive cam matched with the unlocking component, and an elastic reset component for resetting the operation button;
wherein the unlocking component comprises an unlocking push rod and a rotating shaft, while in the unlocking position, the unlocking push rod is pushed by the drive cam to rotate about the rotating shaft, the blade fixing structure and the positioning structure are separated from each other.

2. The reciprocating saw according to claim 1 , wherein the blade assembly comprises a first blade and a second blade which are arranged side by side, the reciprocating rod assembly comprises a first reciprocating rod and a second reciprocating rod which are arranged side by side, the unlocking component comprises a pair of unlocking push rods being respectively set on the first reciprocating rod and the second reciprocating rod; in the locking position, the distance between the pair of the unlocking push rods is h, in the unlocking position, the distance between the pair of the unlocking push rods is H, wherein H−h≥2 T, T is a thickness of the blade.

3. The reciprocating saw according to claim 1 , wherein the blade fixing structure comprises a protrusion, the positioning structure comprises a positioning hole; in the locking position, the protrusion sticks into the positioning hole; in the unlocking position, the protrusion is disengaged from the positioning hole.

4. The reciprocating saw according to claim 3 , wherein the unlocking push rod and the rotating shaft are respectively located at a front side and a rear side of the reciprocating rod assembly; and the protrusion are located between the unlocking push rod and the rotating shaft.

5. The reciprocating saw according to claim 4 , wherein the operation button is a knob, the drive cam is set at an end of the knob, the elastic reset component is a torsional spring, the torsional spring is installed at an outer side of a first center column which is located between the knob and the drive cam.

6. The reciprocating saw according to claim 5 , wherein the drive cam comprises a rounded corner area being in contacted with the unlocking push rod, the radius of the rounded corner area gradually increases along a rotating direction of the drive cam, when viewed in an axial direction of the first center column.

7. The reciprocating saw according to claim 4 , wherein the operation button is a push button, the drive cam is set at an end of the push button, the elastic reset component is a pressure spring, a second center column extends from a side of the push button facing the reciprocating rod assembly, the second center column is set with a blind hole within, the pressure spring is set in the blind hole.

8. The reciprocating saw according to claim 7 , wherein the drive cam comprises a bevel being in contacted with the unlocking push rod.

9. The reciprocating saw according to claim 3 , wherein an inclined guide plane is arranged on one end of the protrusion, and the inclined guide plane is facing the blade assembly.

10. The reciprocating saw according to claim 1 , wherein the reciprocating rod assembly comprises a magnetic component set between the blade fixing structure and the unlocking component, the magnetic member is mounted behind the blade fixing structure as viewed in an insertion direction of the blade assembly, the blade assembly is at least partially made of ferromagnetic material.

11. The reciprocating saw according to claim 1 , wherein the reciprocating rod assembly comprises a spring member, an end of the spring member is connected to the housing, a main body part of the spring member fixes the reciprocating rod assembly.

Assignees

• Globe Jiangsu Co Ltd

Inventors

• Li Xiazi
• Wang Tao

Classifications

• B23D51/10 Primary

  for hand-held or hand-operated devices · CPC title

• B27G19/00

  Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws · CPC title

• B27G19/006 Primary

  for reciprocating saws · CPC title

• B27B19/002

  Power-driven hand saws · CPC title

• B27B19/00 Primary

  Other reciprocating saws with power drive; Fret-saws · CPC title