Unlock instant, AI-driven research and patent intelligence for your innovation.

Power tool

A technology of power tools and tools, applied in the field of portable power tools

Inactive Publication Date: 2011-06-01
MAKITA CORP
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the electric tool of prior art, because its structure is the structure that can only show current driving state, so people hope that it can provide more information

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
  • Power tool
  • Power tool
  • Power tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] In this example, if image 3 , As shown in 4, the detection mechanism is composed of two Hall element sensors 161 and 163 as non-contact sensors and a current sensor. The magnet 165 provided on the drive-side clutch member 142 of the slip clutch 141 is detected by the hall element sensors 161 and 163, and the load current value of the drive motor 115 is detected by the current sensor. For convenience, the current sensor is omitted from the illustration. The notification mechanism is installed on the side front end of the saw blade cover 104, which includes the processing position of the workpiece cut off by the saw blade 113, or the positioning notch corresponding to the ink line of the workpiece, or the base 111 formed with the front guide. top area ( figure 1 One of the three in the right end), and the lighting tool 167 (refer to figure 1 ). The lighting tool 167 corresponds to the "luminous body" described in the present invention. When performing processing ope...

Embodiment 2

[0074] The working method of the detection mechanism in embodiment 2 is the same as that in embodiment 1, that is, in the state where the position information of the driving side clutch member 142 is output to the controller using the magnet 165 and the Hall element sensors 161, 163, the The rotation sensor (illustration omitted for convenience) detects the magnitude of the load acting on the saw blade 113 using the rotation speed of the output shaft 125, and outputs the detection signal to the controller. In addition if Figure 13 As shown, a display device 169 is arranged as notification means in the upper area visible to the operator on the handle 109 .

[0075] The display device 169 is composed of three LED lamps 169 a , 169 b , and 169 c arranged side by side along the axial direction of the handle 109 . It not only displays the state about to shift, but also displays the high-speed low-torque state before the shift and the low-speed high-torque state after the shift. ...

Embodiment 3

[0080] In Embodiment 3, using a non-contact sensor composed of a magnet and a coupling coil (illustration is omitted for convenience), it is measured that the slidable engagement clutch 141 that can realize the speed change operation in the transmission mechanism 117 can move along the axial direction. The position of the driving side clutch member 142 is displayed by the controller using the same display device 169 as in the second embodiment based on the position information.

[0081] That is, when it is confirmed that the driving side clutch member 142 is in the engaged position 143 close to the driven side clutch member according to the detection signal output by the coupling coil, the controller judges that the speed change mechanism 117 is driving at high speed and low torque, and at this moment, the light on Or flash off the LED light 169a used to display the state of high speed and low torque. In addition, according to the detection signal output by the coupling coil, ...

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

A technique for providing a user with effective information in performing an operation is provided in a power tool having a speed change mechanism. A power tool has a speed change mechanism 117 that is adapted to switch a tool bit 113 from first drive mode in which the tool bit is driven at high speed and low torque to second drive mode in which the tool bit is driven at low speed and high torque, according to load on the tool bit 113. The power tool includes detecting and indicating device 161, 163, 167 that are adapted to detect a predetermined status condition of the first drive mode and indicate switching from the first drive mode to the second drive mode before switching to the second drive mode.

Description

technical field [0001] The present invention relates to a portable power tool. The power tool has a speed change mechanism, and the speed change mechanism switches the rotation speed of the tip tool according to the magnitude of the load acting on the tip tool. Background technique [0002] For example, Japanese Patent Application Laid-Open No. Hei 9-155757 (Patent Document 1) describes a portable electric power tool having a transmission for switching the rotation speed of a tip tool between high and low speeds. The electric tool described in this publication has not only the above-mentioned transmission, but also a clutch device arranged on the downstream side of the transmission, and a light-emitting diode display. The display shows relevant visual information to the operator. [0003] For electric tools, detecting the driving status of the top tool and displaying the driving status to inform the operator is one of the important items for the operator to work with peace ...

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): B25F5/00B25B23/14
CPCB25F5/001H02H7/085B25B21/008
Inventor 平林伸治伊藤周祐
Owner MAKITA CORP