Power tool having an eccentric mass
a technology of eccentric mass and power tools, applied in the field of power tools, can solve the problems of cumbersome control, vibration transmission to the operator, and the need for two hands for sander operation
Inactive Publication Date: 2009-04-30
JINDING GRP CO LTD
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Benefits of technology
[0011]The power tool may further include one or more dust channels extending from the base element to the fan for at least partially guiding the suction force created by the fan. Also, the power tool may further include a filter element positioned between the fan and the dust channels, such that the suction force of the fan draws at least a portion of the particulates created during the sanding of the work surface toward the filter element.
[0012]The power tool may further include a fan shaft that is substantially parallel to and rotationally connected to the drive shaft such that rotation of t
Problems solved by technology
First, the overall size of the sander may be large, particularly in the height dimension, making it cumbersome to control.
Second, the sander may require two hands to operate it.
Third, the motor and eccentric weight may rotate in the same plane, which may cause a good deal of vibration to be transmitted to the operator.
Fourth, by pushing out the dust, the fan blades may come in contact with the dust, which can wear the fan down over time.
Method used
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[0015]The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout.
[0016]FIG. 1 illustrates a power tool 10 consistent with an exemplary embodiment. The power tool 10 may include a motor assembly 20, a sanding shaft 50, an eccentric mass 60, a base element 70, and a fan 80.
[0017]The motor assembly 20 may include a motor 30 and a drive shaft 40. The motor 30 rotates the drive shaft 40 during operation. The drive shaft 40 is rotationally connected to the sanding shaft 50. As used herein, and in the claims, the phrase “rotationally connected to” means that the elements described eac...
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A power tool having an eccentric mass for sanding a work surface is provided. The power tool may include a motor assembly, a sanding shaft, an eccentric mass, a base element, a fan shaft, a fan, a filter element and one or more dust channels. The motor assembly may be perpendicular to the sanding shaft for reducing the height of the power tool and reduce vibrations transmitted to the operator during use. The fan may be configured to create a suction force that is guided at least partially through the dust channels for evacuating at least some of the particulate matter creating during sanding operations and the filter element may be configured to capture at least some of the particulate matter for providing at least some protection to the operator and the fan. The fan may be position opposite the motor assembly from the sanding shaft.
Description
BACKGROUND OF THE INVENTION[0001]1) Field of the Invention[0002]The present invention relates to power tools.[0003]2) Description of Related Art[0004]Power tools such as eccentric sanders are devices used to sand wood and other work surfaces. In a typical eccentric sander, an electric motor rotates a shaft attached to a sanding base at the bottom of the sander. The shaft is also connected to an eccentric weight, which causes the sander to vibrate when the shaft spins. The shaft may further have a fan connected to it in order to suck dust through holes in the sanding base and push it out through a filter mechanism. As the operator moves the sander, the vibrations caused by the eccentric mass create small but rapid movements of the sander, which expedite the sanding of the work surface.[0005]While known eccentric sanders are useful, the typical sander configuration may have a number of disadvantages. First, the overall size of the sander may be large, particularly in the height dimens...
Claims
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Login to View More IPC IPC(8): B24B23/00
CPCB24B23/04B24B55/102B24B47/12
Inventor BAKKER, RIENTS MATHIJS
Owner JINDING GRP CO LTD