Electronic switching module for a power tool
First Claim
1. An electronic power apparatus comprising:
- a housing;
a pair of input power pins and a pair of output power pins;
a plurality of power components mounted on a power circuit board and electrically connected to the input power pins and the output power pins to modulate a supply of power from the input power pins to the output power pins;
a control unit arranged on a control circuit board disposed at a distance from the power circuit board and substantially parallel to the power circuit board, the control circuit board and the power circuit board being arranged inside the housing; and
a user-actuated input unit including a variable-speed actuator a first portion of which is at least partially arranged outside the housing to be engageable by a user and a second portion of which is slidably sandwiched between the power circuit board and the control circuit board along an axis substantially parallel to the power circuit board and the control circuit board,wherein the second portion of the user-actuated input unit comprises a wiper portion supporting a conductive wiper, andwherein the control unit is arranged on a first side of the control circuit board and a sense pad is arranged on a second side of the control circuit board facing the power circuit board and engaging the second portion of the variable-speed actuator, the sense pad providing an analog signal to the control unit corresponding to an actuation of the variable-speed actuator.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic power apparatus includes a housing, a pair of input power pins and a pair of output power pins, and power components mounted on a power circuit board and electrically connected to the input power pins and the output power pins to modulate a supply of power from the input power pins to the output power pins. A control unit of the electronic power apparatus is disposed at a distance from the power circuit board and substantially parallel to the power circuit board, both the control circuit board and the power circuit board arranged inside the housing. A user-actuated input unit is provided including a variable-speed actuator a first portion of which is at least partially arranged outside the housing to be engageable by a user and a second portion of which is slidably sandwiched between the power circuit board and the control circuit board along an axis substantially parallel to the power circuit board and the control circuit board.
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Citations
11 Claims
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1. An electronic power apparatus comprising:
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a housing; a pair of input power pins and a pair of output power pins; a plurality of power components mounted on a power circuit board and electrically connected to the input power pins and the output power pins to modulate a supply of power from the input power pins to the output power pins; a control unit arranged on a control circuit board disposed at a distance from the power circuit board and substantially parallel to the power circuit board, the control circuit board and the power circuit board being arranged inside the housing; and a user-actuated input unit including a variable-speed actuator a first portion of which is at least partially arranged outside the housing to be engageable by a user and a second portion of which is slidably sandwiched between the power circuit board and the control circuit board along an axis substantially parallel to the power circuit board and the control circuit board, wherein the second portion of the user-actuated input unit comprises a wiper portion supporting a conductive wiper, and wherein the control unit is arranged on a first side of the control circuit board and a sense pad is arranged on a second side of the control circuit board facing the power circuit board and engaging the second portion of the variable-speed actuator, the sense pad providing an analog signal to the control unit corresponding to an actuation of the variable-speed actuator. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A power tool comprising:
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a tool housing; an electric motor inside the tool housing; a power interface facilitating a connection to a power source; and a plurality of power components mounted on a power circuit board and electrically connected to the power interface and the electric motor to modulate a supply of power from the power interface to the electric motor; a control unit arranged on a control circuit board disposed at a distance from the power circuit board and substantially parallel to the power circuit board; and a user-actuated input unit including a variable-speed actuator a first portion of which is at least partially arranged outside the housing to be engageable by a user and a second portion of which is slidably sandwiched between the power circuit board and the control circuit board along an axis substantially parallel to the power circuit board and the control circuit board, wherein the second portion of the user-actuated input unit comprises a wiper portion supporting a conductive wiper, and wherein the control unit is arranged on a first side of the control circuit board and a sense pad is arranged on a second side of the control circuit board facing the power circuit board and engaging the second portion of the variable-speed actuator, the sense pad providing an analog signal to the control unit corresponding to an actuation of the variable-speed actuator. - View Dependent Claims (8, 9, 10, 11)
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Specification