Back to results
US 12,157,175 B2Granted
Reciprocating cutting tool
AssigneeMakita Corporation
InventorYuki Miwa
Life of this patent
Estimating the term…
Abstract
A reciprocating cutting tool includes a shoe that is less likely to slip off when pulled frontward, for positioning the shoe, beyond a predetermined position such as a maximum pull position. The reciprocating cutting tool includes a motor, a slider being rod-like and including a tip tool holder, a reciprocation converter that converts rotation of the motor to reciprocation in a direction in which the slider extends and transmits the reciprocation to the slider, a shoe slidable in a front-rear direction to come in contact with a workpiece to which the tip tool is applied, a shoe lock unit engageable with the shoe to restrict the shoe from sliding and disengageable from the shoe to allow the shoe to slide, and a pin that interferes with the shoe slid to a predetermined position.
Claims14
A reciprocating cutting tool, comprising:
- a motor;
- a slider (i) having a rod shape and (ii) including a tip tool holder (a) at a distal end of the slider and (b) configured to receive a tip tool;
- a reciprocation converter configured to convert rotation of the motor to reciprocation of the slider along a longitudinal axis of the slider;
- a housing that houses the motor, the slider and the reciprocation converter;
- a shoe (i) adjacent to the tip tool holder, (ii) slidable in a front-rear direction parallel to the longitudinal axis of the slider, and (iii) being configured to come in contact with a workpiece to which the tip tool is applied;
- a shoe lock unit configured to engage the shoe to restrict the shoe from sliding and be disengaged from the shoe to allow the shoe to slide;
- a shoe guide plate;
- and
- a pin, wherein:
- the shoe includes
- a shoe plate configured to come in contact with the workpiece;
- and
- a shoe support (i) supporting the shoe plate and (ii) having a slit extending in the front-rear direction;
- the slit has a first section having a first width that is constant, a second section having a second width and a narrowest portion having a third width;
- the narrowest portion is between the first section and the second section along the longitudinal axis;
- the third width is less than the first width and the second width;
- the pin is configured to interfere with the shoe when the shoe is in a predetermined position;
- the pin includes
- a smaller-diameter portion (i) extending in the vertical direction and (ii) having a diameter smaller than the third width, and
- a larger-diameter portion (i) extending in a vertical direction and (ii) having a diameter larger than the width of the slit at the narrowest portion;
- the shoe guide plate is configured to guide the shoe support;
- the pin is received in the slit;
- the housing includes a power transmission housing that houses the reciprocation converter;
- the shoe support is between the power transmission housing and the shoe guide plate;
- the shoe guide plate is fastened to the power transmission housing with a screw;
- and
- the screw is received in the slit.
24 more elements
A reciprocating cutting tool, comprising:
- a motor;
- a slider (i) having a rod shape and (ii) including a tip tool holder (a) at a distal end of the slider and (b) configured to receive a tip tool;
- a reciprocation converter configured to convert rotation of the motor to reciprocation of the slider along a longitudinal axis of the slider;
- a housing that houses the motor, the slider and the reciprocation converter;
- a shoe (i) adjacent to the tip tool holder, (ii) slidable in a front-rear direction parallel to the longitudinal axis of the slider, (iii) configured to come in contact with a workpiece to which the tip tool is applied, and (iv) including
- a shoe plate configured to come in contact with the workpiece,
- a shoe support (i) supporting the shoe plate and (ii) having a slit extending in the front-rear direction,
- a first engaging portion, and
- a second engaging portion;
- a lock lever configured to lock or unlock the shoe;
- an engagement shaft (i) connected to the lock lever in a rotatable manner with the lock lever and (ii) engageable with the first engaging portion;
- a shoe lock unit configured to (i) engage the engagement shaft with the first engaging portion to restrict the shoe from sliding and (ii) disengage the engagement shaft from the first engaging portion to allow the shoe to slide;
- a pin (i) engageable with the second engaging portion with the shoe is in a foremost position within a slidable range and (ii) movable to a position at which the pin does not interfere with the shoe;
- and
- a shoe guide plate configured to guide the shoe support;
- wherein
- the shoe, the shoe lock unit and the pin are configured such that the shoe is detachable when the shoe lock unit allows the shoe to slide and the pin does not interfere with the shoe,
- the pin is received in the slit,
- the housing includes a power transmission housing that houses the reciprocation converter,
- the shoe support is between the power transmission housing and the shoe guide plate,
- the shoe guide plate is fastened to the power transmission housing with a screw, and
- the screw is received in the slit.
19 more elements
Dependencies are inferred from the claim text.