Patent ID: 11872646
Assignee: MAKITA CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 15:
16. A reciprocating tool comprising:
a housing defining a first longitudinal axis;
an elongate slider slidably supported within the housing to undergo reciprocating motion at least substantially in a front-rear direction of the reciprocating tool, the slider defining a second longitudinal axis and having a first end portion comprising a blade mount part configured to removably receive a blade; and
a blade clamp system including:
a first tubular member supported by the housing to be pivotable around the first longitudinal axis between a first position and a second position and held by the housing such that the slider is reciprocally movable in the front-rear direction relative to the first tubular member, the first tubular member having a blade clamp lever configured to be manually manipulated from outside the housing and a single first protrusion protruding radially inward from an inner peripheral surface of the first tubular member;
a second tubular member disposed radially inward of and at least substantially surrounded by the first tubular member, the second tubular member (i) being coupled to the first end portion of the slider, (ii) being pivotable around the second longitudinal axis between an engagement position and a disengagement position, and (iii) having a single second protrusion protruding radially outward from an outer peripheral surface of the second tubular member; and
a lock member disposed radially inward of the second tubular member and configured to move, in response to pivoting of the second tubular member between the engagement position and the disengagement position, in a radial direction of the second tubular member between a lock position at which the lock member is engageable with the blade and an unlock position at which the lock member is non-engageable with the blade;

wherein:
the second tubular member has a cam part that extends partially along a periphery of the second tubular member in a circumferential direction around the second longitudinal axis and has an inner peripheral surface that contacts a head portion of the lock member, the cam part being configured to move the lock member from the unlock position to the lock position as the second tubular member is pivoted from the disengagement position to the engagement position,
the single first protrusion is configured to engage with the single second protrusion and cause the second tubular member to pivot from the engagement position to the disengagement position while the first tubular member is pivoting from the first position to the second position in response to manual manipulation of the blade clamp lever,
the single first protrusion is configured such that, while the first tubular member is disposed at the first position, the second tubular member is pivotable without the single second protrusion engaging the single first protrusion,
the single second protrusion is provided on a portion of the second tubular member other than the cam part, and
the cam part of the second tubular member protrudes radially outward of a remaining portion of the second tubular member.