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Power tool

A technology for power tools and drive shafts, which is applied in the field of power tools with eccentric transmission mechanisms, can solve the problems of falling apart bearings, inconvenience for operators, and low machining accuracy, and achieve the effects of reducing manufacturing costs, increasing reliability, and easy processing

Inactive Publication Date: 2010-07-21
POSITEC POWER TOOLS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned power tool with eccentric transmission mechanism can realize the eccentric transmission of the power tool, because the main shaft driven by its motor is an eccentric shaft, it is difficult to process the eccentric shaft, and the machining accuracy is not high, resulting in high manufacturing cost of the eccentric transmission mechanism. It is easy to cause the bearing to fall apart, which brings inconvenience to the operator

Method used

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Embodiment Construction

[0027] refer to figure 1 , the present invention discloses a power tool, especially a power tool with an eccentric transmission mechanism. The power tool includes a casing 1, a motor 2 inside the casing 1, a main shaft 3 driven by the motor 2, an eccentric 4 connected to the main shaft 3, a shift fork 5 connected to the eccentric 4 and a pivot with the shift fork 5 The connected drive shaft 6 is detachably mounted with a working head 7 . One end of the shift fork 5 is provided with a through hole 52 connected to the drive shaft 6, and a pair of branches 51a, 51b are formed at the other end so that the eccentric member 4 is just stuck between the pair of branches 51a, 51b.

[0028] refer to figure 2 , the main shaft 3 has a rotation axis X, the drive shaft 6 has a rotation axis Y, the rotation axis Y of the drive shaft 6 is perpendicular to the rotation axis X of the main shaft 3, the inner ring 42 of the eccentric member 4 is closely matched with the front end of the main s...

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Abstract

The invention relates to a power tool which comprises a casing, a motor arranged in the casing, a main shaft driven by the motor and an eccentric driving mechanism connected to the main shaft, wherein the eccentric driving mechanism comprises an eccentric part connected to the main shaft and a shifting fork connected to the eccentric part; the shifting fork reciprocates through the rotation of the eccentric part on the main shaft, a driving shaft is pivotally connected to the other end of the shifting pork, and the driving shaft drives a tool head to swing through the motion of the shifting fork; and the eccentric part comprises an outer ring, an inner ring and a rolling part arranged between the outer ring and the inner ring, wherein an inner hole of the inner ring of the eccentric part is eccentrically arranged relative to the eccentric part. The power tool avoids machining an eccentric shaft, ensures that an eccentric mechanism is easy to be machined, reduces the manufacturing cost of the eccentric mechanism and increases the driving reliability.

Description

technical field [0001] The invention relates to a power tool, especially a power tool with an eccentric transmission mechanism. Background technique [0002] A traditional power tool with an eccentric transmission mechanism has a casing, a motor arranged in the casing, and a main shaft driven by the motor. The rotational movement of the main shaft is converted into the rotation of the drive shaft by the eccentric mechanism arranged on the main shaft to drive the tool. Head bobbing motion. [0003] U.S. Patent USRE36909 discloses a driving structure of an electric tool, including a casing, a motor arranged in the casing, a main shaft driven by the motor, the main shaft has a rotation axis and an eccentric portion offset from the rotation axis, and a shift fork consists of The main shaft is driven and operatively connected to the working unit. One end of the shift fork is pivotally connected to the drive shaft, and the other end forms a pair of branched fork shapes and is stu...

Claims

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Application Information

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IPC IPC(8): B25F5/00
Inventor 毋宏兵龙强
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD