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Power tool, work head and adapter applied to same

A technology of power tools and working heads, which is applied in the field of power tools, can solve the problems of torque limitation and failure to meet the needs of customers in large torque transmission applications, and achieve the effects of torque increase, lengthening and improving work efficiency

Active Publication Date: 2014-12-17
POSITEC POWER TOOLS (SUZHOU) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Although the above-mentioned interface scheme increases the distance from the opening 94 of the straight saw blade 93 to the axis center of the output shaft 91, the rectangular protrusion 92 of the output shaft 91 is usually smaller in size, and the distance from the engaging section of the opening 94 is correspondingly reduced. Therefore, the final torque provided is still limited, which also cannot meet the needs of customers for high torque transmission applications

Method used

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  • Power tool, work head and adapter applied to same
  • Power tool, work head and adapter applied to same
  • Power tool, work head and adapter applied to same

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no. 2 approach

[0124] In the above embodiment, the outer protrusion 107 of the driving part 106 of the output shaft 102 is roughly arched, the inner protrusion 108 is roughly triangular, and the form fitting part 115 of the working head 11 has an outer layer that cooperates with the driving part 106. The installation hole 116 and the inner layer installation hole 117 are in the same shape as the outer layer protrusion 107 and the inner layer protrusion 108 respectively. For those skilled in the art, it will be easy to understand that the cross-sectional shape of the protrusion and the mounting hole is not limited to arch and triangle, and can also be a kind of circle, ellipse, rectangle or trapezoid, and the working head The matching part 115 can also be set as a single mounting hole, as long as the mounting hole has a first matching part and a second matching part respectively matching with the outer layer protrusion 107 and the inner layer protrusion 108 of the driving part 106 . For detai...

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Abstract

The invention discloses a power tool, a work head and an adapter applied to the same. The power tool is provided with an output shaft used for mounting the work head and driving the work head to move, and at least one driving portion matched with the work head extends axially from the tail end of the output shaft. Each driving portion comprises at least two protrusions which comprise at least an outer layer protrusion and an inner layer protrusion, and the distance between the center of the outer layer protrusion and the axis of the output shaft is not equal to that between the center of the inner layer protrusion and the axis of the output shaft. larger torque can be transmitted because the driving portion of the output shaft of the power tool is provided with at least two layers of protrusions, the at least two layers of protrusions can share more fit clearance, and the transmission is more stable.

Description

technical field [0001] The invention relates to a power tool capable of installing a working head, in particular to an output shaft of the power tool capable of driving the movement of the working head. [0002] The present invention also relates to a working head mountable to the output shaft of the above-mentioned power tool. [0003] The present invention also relates to two kinds of adapters, one is to connect the working head that does not match the output shaft of the above-mentioned power tool to the above-mentioned power tool, and the other is to connect the above-mentioned working head to the power tool that does not match it on the output shaft of the power tool and transmit the torque of the power tool to the work head. Background technique [0004] The multi-function machine is a hand-held oscillating power tool common in the industry. Its working principle is that the output shaft oscillates around its own axis, thereby driving the accessory working head instal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25F3/00
Inventor 张士松霍立祥
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD
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