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System and method for communicating over power terminals in cordless DC tools

A technology of tools and power tools, applied in the direction of manufacturing tools, motor tools, current collectors, etc., can solve problems such as trouble, high cost, and reduced tool reliability

Inactive Publication Date: 2005-08-10
BLACK & DECKER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Known methods of communicating with cordless power tools to extract operating data, input control algorithms, update control programs, and / or update control coefficients are generally labor intensive, cumbersome, costly and can reduce tool reliability
For example, the tool must be disassembled to access the electronics

Method used

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  • System and method for communicating over power terminals in cordless DC tools
  • System and method for communicating over power terminals in cordless DC tools
  • System and method for communicating over power terminals in cordless DC tools

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Embodiment Construction

[0017] The following description of preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application or uses.

[0018] figure 1 is a simplified block diagram of a system 10 for transferring data to and / or from a cordless power tool 14 in accordance with a preferred embodiment of the present invention. It will be appreciated that although the cordless tool 14 is in figure 1 Illustrated as a cordless drill, the power tool 14 may be any cordless tool such as a nailer, drill, screwdriver, circular saw, reciprocating saw, wire saw, or sander, among others. The system 10 includes a data transfer device 18, also referred to as a master device, adapted to connect to the power terminals 22a and 22b of the power tool 14 to communicate with the power tool 14 when the power tool 14 is in a communication mode. Power terminals 22a and 22b are also used to connect a tool power source, such as a removable portable battery pack, to tool 14...

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PUM

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Abstract

A system and method for unidirectionally or bi-directionally communicating information and data to and from an electronic module housed within a cordless power tool, over power terminals of the cordless power tool, while a battery pack of the tool is removed from the tool. A data transfer device is connected to at least one power terminal of the tool in place of the battery pack. The power terminal is also used for electrically connecting the battery pack to the tool during normal operation of the tool. A voltage supplied by the data transfer device to the tool is sequentially varied between a first level and a second level, in accordance with a predetermined communications protocol, to transmit data from electronic module of the tool to the data transfer device. A voltage signal applied to the electronic module of the tool is sequentially shifted between a first voltage and a second voltage to transmit data from the data transfer device to the tool. Thus, data can be transmitted between the tool and the data transfer device without requiring disassembly of the tool.

Description

technical field [0001] The present invention relates to a cordless power tool. More specifically, the present invention relates to the transfer of information between a power tool and a data transfer device via the power supply terminal of the tool. The power supply terminals are the same as those used to connect to the power supply of the tool, ie a portable battery pack, during operation of the tool. Background technique [0002] Modern cordless power tools are becoming more common in homes and commercial construction operations. The development of cordless power tools has resulted in the production of various cordless power tools in cordless formats. For example, power tools such as nailers, drills, screwdrivers, circular saws, reciprocating saws, wire saws, and sanders are now commonly manufactured in cordless form. As the types of cordless power tools increase, the technical complexity of cordless power tools increases. Modern electronic components such as microcont...

Claims

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Application Information

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IPC IPC(8): B25F5/00B25B21/00B25B23/14
CPCB25B23/14B25B21/00B25F5/00
Inventor 丹尼利·C·布罗托迈克尔·K·福斯特
Owner BLACK & DECKER INC
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