Blade and blade attachment system for an oscillating tool

• US 10,011,036 B2
• Filed: 11/09/2015
• Issued: 07/03/2018
• Est. Priority Date: 11/09/2015
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH, Robert Bosch Tool Corporation (Robert Bosch GmbH)
• Original Assignee: Robert Bosch GmbH, Robert Bosch Tool Corporation (Robert Bosch GmbH)
• Inventors: Rubens, Jeremy, Padget, Brad, Haman, Brian, Moreno, Jaime, Dvorak, Chris
• Primary Examiner(s): Prone, Jason Daniel
• Assistant Examiner(s): CROSBY JR, RICHARD D
• Application Number:
  US14/935,924
• Publication Number:
  US 20170129125A1
• Time in Patent Office: 967 Days
• Field of Search: 30392-394
• CPC Class Codes: B23D 51/10 for hand-held or hand-operated devices
• CPC Class Codes: B26B 7/00 Hand knives with reciprocating motor-driven blades
• CPC Class Codes: B27B 19/006 with oscillating saw blades; Hand saws with oscillating saw blades

Abstract

A blade attachment system includes a tool mount, a blade holder plate attached to the tool mount adapter; and a clamping assembly attached to the blade holder plate. The clamping assembly includes a plurality of fixed clamping positioned adjacent to at least one of the lateral edges of the blade when the blade is placed on the blade holder plate and including tapered surfaces configured to overlap the lateral edges of the blade and at least one movable clamping pin that is movably mounted to the blade holder plate, the movable clamping pin being configured to move with respect to the blade to move the lateral edges of the blade into engagement with the tapered surfaces of the clamping pins.

Claims

1. A handheld oscillating power tool comprising:

a portable housing;

a tool holder extending from the housing and configured to be oscillated about an oscillation axis, the toolholder including tool drive interface;

a blade having a planar body with a leading edge, a trailing edge, and a pair of lateral edges, at least one of the leading edge and the trailing edge comprising a cutting edge; and

blade attachment system including;

a tool mount adapter having a drive attachment interface, the drive attachment interface being configured to be releasably secured to the tool drive interface of the tool holder such that the blade attachment system oscillates with the tool holder;

a blade holder plate attached to the tool mount adapter; and

a clamping assembly attached to the blade holder plate, the clamping assembly including;

a plurality of fixed clamping pins that extend downwardly from a lower surface of the blade holder plate, the fixed clamping pins being positioned adjacent to at least one of the lateral edges of the blade when the blade is placed on the blade holder plate and including tapered surfaces configured to overlap the lateral edges of the blade, and

at least one movable clamping pin that is movably mounted to the blade holder plate, the movable clamping pin being configured to move with respect to the blade to move the lateral edges of the blade into engagement with the tapered surfaces of the clamping pins,

wherein the tapered surfaces are provided on head portions of the fixed clamping pins and the movable clamping pin,

wherein the movable clamping pin is attached to a lever arm, the lever arm being configured to rotate the movable clamping pin between a clamped and an unclamped position,

wherein the movable clamping pin is oriented with a pin axis of the pin substantially perpendicular to a plane of the blade, and

wherein the lever arm includes a face cam that is configured to engage the blade holder plate to move the lever arm away from an upper surface of the blade holder plate, the movement of the lever arm away from the upper surface of the blade holder plate causing the movable clamping pin to move axially toward a lower surface of the blade holder plate.

2. A blade attachment system comprising:

a tool mount adapter having a drive attachment interface, the drive attachment interface being configured to be releasably secured to a tool drive interface of a tool holder of an oscillating power tool such that the blade attachment system oscillates with the tool holder;

a blade holder plate attached to the tool mount adapter; and

a clamping assembly attached to the blade holder plate, the clamping assembly including;

a plurality of fixed clamping pins that extend downwardly from a lower surface of the blade holder plate, the fixed clamping pins being positioned adjacent to at least one of the lateral edges of the blade when the blade is placed on the blade holder plate and including tapered surfaces configured to overlap the lateral edges of the blade, and

at least one movable clamping pin that is movably mounted to the blade holder plate, the movable clamping pin being configured to move with respect to the blade to move the lateral edges of the blade into engagement with the tapered surfaces of the clamping pins,

wherein the movable clamping pin is attached to a lever arm, the lever arm being configured to rotate the movable clamping pin between a clamped and an unclamped position,

wherein the lever arm includes a face cam that is configured to engage the blade holder plate to move the lever arm away from an upper surface of the blade holder plate, the movement of the lever arm away from the upper surface of the blade holder plate causing the movable clamping pin to move axially toward a lower surface of the blade holder plate.