Brushless hand-held tool

A technology for tools and brush hands, which is applied in the field of brushless hand-held tools, can solve the problems of loose and cracked control lines, easy failures, poor contact, etc., and achieve the effect of meeting the requirements of rapid cooling, ensuring normal use, and reliable performance

Inactive Publication Date: 2009-09-09
姜卫亮 +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing brushless hand-held tools include a tool body, a brushless motor installed in the tool body, and a driver connected to the brushless motor. The tool body is generally small in size for the convenience of hand-holding, and the current driver uses a common circuit board. And the drive circuit makes the volume relatively large. It is difficult to assemble into the tool body without changing the volume. It can only be installed outside the tool body. The driver is connected to the brushless motor through the control line to control the work of the brushless motor. The connected control wire is also located outside the tool body. During use, the connected control wire is often pulled and cracked due to work needs, resulting in poor contact, and it is difficult for the driver to control the operation of the motor. It is inconvenient to use and prone to failure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Brushless hand-held tool
  • Brushless hand-held tool
  • Brushless hand-held tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Such as Figure 1 to Figure 4 , a brushless hand-held tool, including a tool body 1, a brushless motor 2 installed in the tool body 1, a driver 3 connected to the brushless motor 2, and the driver 3 is arranged inside the tool body 1. The driver 3 includes a driver body 31 and a circuit board 32 disposed in the driver body 31 . The circuit board 32 is provided with a plurality of horizontally placed MOS tubes 33 , and a cooling fin 34 is stacked on the MOS tubes 33 . The horizontal setting of the MOS tube 33 reduces the volume of the circuit board 32, and correspondingly reduces the volume of the driver 3, so that the driver 3 can be directly arranged in the tool body 1, preventing the control line between the driver 3 and the brushless motor 2. Poor contact due to loosening and cracking caused by external pulling. The circuit board 32 includes a control chip 321 and a driving unit 322, and the driving unit 322 uses an integrated circuit to drive the chip. The integra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a brushless hand-held tool, comprising a tool main body, a brushless electric motor arranged inside the tool main body, and a driver connected with the brushless electric motor and arranged inside the tool main body. The brushless hand-held tool can prevent the wire between a controller and the brushless electric motor from loosening and cracking caused by external pulling so as to be in poor contact; the brushless hand-held tool is convenient in use and reliable in performance.

Description

technical field [0001] The invention relates to a hand-held tool, in particular to a brushless hand-held tool. Background technique [0002] Existing brushless hand-held tools include a tool body, a brushless motor installed in the tool body, and a driver connected to the brushless motor. The tool body is generally small in size for the convenience of hand-holding, and the current driver uses a common circuit board. And the drive circuit makes the volume relatively large. It is difficult to assemble into the tool body without changing the volume. It can only be installed outside the tool body. The driver is connected to the brushless motor through the control line to control the work of the brushless motor. The connected control wire is also located outside the tool body. During use, the connected control wire is often pulled and cracked due to work needs, resulting in poor contact, and it is difficult for the driver to control the operation of the motor. It is inconvenient ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B25F5/00
Inventor 姜卫亮应时立
Owner 姜卫亮
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap