Multi-mode drill with mode collar
First Claim
1. A hammer-drill comprising:
- a housing having a motor including an output member;
an output spindle journaled in the housing to permit axial reciprocating movement thereof in a hammer mode;
a parallel axis transmission disposed in the housing and drivingly coupling the output member of the motor to the output spindle, the transmission including at least two speed modes;
a rotating hammer member that rotates with the output spindle and a non-rotating hammer member that does not rotate with the output spindle, the rotating hammer member cooperating with the non-rotating hammer member to cause axial reciprocating movement of the output spindle in the hammer mode; and
a mode collar rotatably mounted on the housing and around the output spindle;
a rearward cam surface facing axially toward the rear of the hammer drill coupled to the mode collar and rotating along with the mode collar during movement of the mode collar into one of the at least two speed modes; and
a forward cam surface facing axially toward the front of the hammer drill coupled to the mode collar and rotating along with the mode collar during movement of the mode collar into the hammer mode.
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Accused Products
Abstract
A drill includes a housing and a motor coupled to an output member by a transmission. The transmission can selectively couple the output member to an output spindle through a low speed output gear or a high speed output gear for rotating the output spindle at a first speed or a second speed, respectively. Alternatively or additionally, a low speed mode can be provided by actuating an electronic switch that limits the speed of the motor. A rotatably fixed hammer member and a rotatable hammer member can be mounted around the output spindle. A mode collar can be rotatably mounted on the housing and around the output member for movement to positions that correspond to various mode of operation, including a low speed mode, a high speed mode, and a hammer-drilling mode. In the hammer-drilling mode, the transmission operates in the high speed mode.
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Citations
20 Claims
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1. A hammer-drill comprising:
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a housing having a motor including an output member; an output spindle journaled in the housing to permit axial reciprocating movement thereof in a hammer mode; a parallel axis transmission disposed in the housing and drivingly coupling the output member of the motor to the output spindle, the transmission including at least two speed modes; a rotating hammer member that rotates with the output spindle and a non-rotating hammer member that does not rotate with the output spindle, the rotating hammer member cooperating with the non-rotating hammer member to cause axial reciprocating movement of the output spindle in the hammer mode; and a mode collar rotatably mounted on the housing and around the output spindle; a rearward cam surface facing axially toward the rear of the hammer drill coupled to the mode collar and rotating along with the mode collar during movement of the mode collar into one of the at least two speed modes; and a forward cam surface facing axially toward the front of the hammer drill coupled to the mode collar and rotating along with the mode collar during movement of the mode collar into the hammer mode. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A hammer-drill comprising:
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a housing having a motor having an output member; an intermediate shaft disposed in the housing, the intermediate shaft having an input gear, a first intermediate gear, and a second intermediate gear rotationally fixed to the intermediate shaft, with the input gear coupled with the output member of the motor so that the motor causes the intermediate shaft to rotate about its axis; an output shaft disposed in the housing, the output spindle having a first output gear, a second output gear, and a first ratchet wheel rotationally fixed to the output shaft; a second ratchet wheel rotationally fixed relative to the housing, the second ratchet wheel surrounding the output shaft and facing the first ratchet wheel; and a manually actuated switch rotatably mounted on the housing and movable between a plurality of positions, each position corresponding to a mode of operation, wherein the modes of operation comprise; a low speed mode wherein the first intermediate gear is coupled for rotation with the first output gear so that rotation of the intermediate gear about its axis causes the output shaft to rotate about its axis at a first speed; a high speed mode wherein the second intermediate gear is coupled for rotation with the second output gear so that rotation of the intermediate gear about its axis causes the output shaft to rotate about its axis in a second speed that is higher than the first speed; and a hammer-drilling mode, wherein the second intermediate gear is coupled for rotation with the second output gear so that rotation of the intermediate gear about its axis causes the output shaft to rotate about its axis in a second speed that is higher than the first speed, and wherein the first and second ratchet wheels engage to impart axial hammering to the output shaft, wherein the hammer-drilling mode is only selectable when the second intermediate gear is coupled for rotation with the second output gear output in the high speed mode. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A hammer-drill comprising:
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a housing having a motor; an output spindle disposed in the housing; a parallel axis transmission disposed in the housing, wherein the transmission selectively couples the motor to the output spindle through a plurality of gears, and the transmission further includes a ratchet mechanism to selectively deliver vibratory impacts to the output spindle in a hammer-drilling mode; and a manually actuated switch rotatably mounted on the housing and movable between a plurality of positions to adjust the transmission among; a low speed drill mode wherein the motor rotates the output spindle at a first speed; a high speed drill mode wherein the motor rotates the output spindle at a second speed that is higher than the first speed; and the hammer-drilling mode, wherein the hammer-drilling mode is only selectable when the transmission is in the high speed drill mode. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification