This disclosure relates to power tools and more particularly to power table saws.
Power tools such as table saws, miter saws, bevel saws, compound saws, planers, vertical saws, circular saws, or the like are used in the construction and wood working industries. When a blade of a table saw or a cutterhead of a planer comes in contact with a workpiece, e.g., a piece of lumber, to cut the workpiece, dust and debris are generated as a result of the cutting. Power saw machines are typically equipped with dust management and collection features. An example of a prior art table saw with a dust management system is depicted in
A table saw 10 depicted in
These general components are typical of portable table saws that can be easily transported to a jobsite where they can be used in conjunction with construction, remodeling, and similar projects. While it is important that such portable table saws be relatively lightweight so that they can be carried without difficulty from a vehicle to a use location, it is also important that the saws be durable and provide a stable work surface.
The front wall 20 includes an arcuate slot 42 that is provided to enable portions of an undercarriage assembly 50 to extend outside of the base assembly 12 for the purposes of manipulating the height of the blade 34 that extends above the top surface 18 of the table top assembly 16, as well as adjusting the angle of the blade 34 relative to the top surface 18. As shown in
Turning now to
Turning now to
The saw blade 34 is configured to cut a workpiece by turning in a counterclockwise direction as depicted by an arrow 35. The housing formed by the frame member 56 and the cover 58 forms a path for the dust and debris generated when the saw blade 34 comes in contact with the workpiece. This path is defined by counterclockwise sections that are depicted by arrows 37, 39, 41, and 43. The dust and debris first enter the frame member 56 and partially travel within the frame member 56, according to the arrows 37 and 39. Part of the dust and debris exit the table saw 10 through the dust port 88 (shown in
Additionally, while the dust port 88 can evacuate a substantial amount of dust and debris that is produced during operation of the table saw 10, the volume underneath of the table top assembly 16 may not be entirely cleared of debris, particularly larger pieces thereof that are not effectively entrained in the airflow that is being removed by operation of the vacuum system (not shown). Thus, such dust and debris may accumulate in the bottom of the table saw 10 which need to be removed.
Some table saws have an opening in a rear panel of the saw for gaining access to the material that may become accumulated on the bottom of the base assembly. However, it is sometimes necessary to turn the saw on its side or even upside down in order to effectively remove all of the material that has been accumulated. It is also sometimes necessary for a bottom cover to be removed in order to access the interior of the table saw for clean-up. These latter actions are often inconvenient and time-consuming to complete.
Therefore, it is highly desirable to provide a dust management system which not only minimizes dust and debris that escape the compartment, but also includes a compartment that is easily removed from the table saw to be cleaned of accumulated dust and debris and then easily replaced.
The present disclosure addresses the need for a removable dust compartment for a power tool. The power tool includes a base assembly, a table top assembly supported by the base assembly, and an undercarriage frame positioned within the base assembly. The table top assembly includes a top surface with an opening configured to receive a rotatable blade. The undercarriage frame includes a support member. The power tool also includes a motor that is supported by the support member and is configured to drive a drive shaft to rotate the rotatable blade. The power tool also includes a removable compartment received within the base assembly and removably coupled to the support member.
The removable compartment has a closed body portion configured to collect dust and debris generated by operation of the power tool and an open top portion. The removable compartment is configured to receive at least a portion of the rotatable blade extending below the table top assembly through the open top portion and within the closed body portion. The closed body portion of the removable compartment includes a support member wall configured to be removably coupled to the support member and a dust port integrally formed with the support member wall. The support member wall includes a plurality of baffles configured to direct a path of airflow generated by the rotatable blade through the removable compartment toward the dust port. The removable compartment further includes a wedge also configured to direct the path of airflow through the removable compartment toward the dust port. Accordingly, the removable compartment is configured to facilitate evacuation of dust and debris from the removable compartment via the dust port.
The removable compartment is also configured to be easily removed from the support member for cleaning and easily replaced on the support member for reuse. To this end, the support member wall of the removable compartment includes an opening configured to receive a portion of the drive shaft. The opening extends to the open top portion of the removable compartment such that removal and replacement of the removable compartment does not interfere with any portion of the power tool. The support member wall also includes a plurality of openings configured to engage with a corresponding plurality of fixed mounts on the support member. The engagement of the openings and fixed mounts is such that the removable compartment can be easily removed for cleaning and replaced for reuse with the power tool.
Turning now to
The undercarriage assembly 100 further includes a removable compartment 124 configured to be removably coupled to the blade facing side 116 of the support member 108. The removable compartment 124 includes an open top portion 125 and a closed body portion 126 which can be formed of metal or hard plastic material which will not shatter or become damaged by debris within the removable compartment 124. The closed body portion 126 is configured to collect dust and debris generated by the saw during use. The open top portion 125 is configured to receive at least a portion of the rotatable blade 34 which extends below the table top assembly through the open top portion 125 and into the closed body portion 126. The closed body portion 126 of the removable compartment 124 includes a support member wall 132, a first side wall 136, a second side wall 140, and an outward wall 144. The support member wall 132 is configured to be removably coupled to the blade facing side 116 of the support member 108 and is therefore shaped in a manner that is complementary to the blade facing side 116.
The first side wall 136 and second side wall 140 are preferably integrally formed with the support member wall 132 and are shaped to fit snugly within the pivot portions 120 of the support member 108. The outward wall 144 is coupled to the first and second side walls 136, 140 so as to be opposite and substantially parallel to the support member wall 132. In a preferred embodiment, the outward wall 144 is irremovably coupled to the first and second side walls 136, 140 by, for example, press-fitting, welding, or molding. In other embodiments, however, the outward wall 144 can be removably coupled to the first and second side walls 136, 140 by, for example, a snap-fit arrangement.
Turning now to
The removable compartment 124 also includes a dust port 156 associated with or integrally formed with the support member wall 132 and the second side wall 140. The first side wall 136 of the removable compartment 124 extends in a curve from the top 146 of the support member wall 132 toward the dust port 156. The second side wall 140 extends generally straight downwardly from the top 146 of the support member wall 132 toward the dust port 156 and includes a wedge 160 above and adjacent to the dust port 156 that is configured to direct the path of airflow in the removable compartment 124 toward the dust port 156. The dust port 156 is configured to be coupled to a vacuum source (not shown).
The support member wall 132 also includes a plurality of openings extending through the support member wall 132. In the embodiment shown, the support member wall 132 includes three key hole openings 164 and one fastening opening 168 spaced apart from one another. In alternative embodiments, however, the support member wall 132 can include more or fewer of each of the key hole openings and screw openings. In other alternative embodiments, the support member wall 132 can also include other types of openings configured for removability of the removable compartment 124. In the embodiment shown, a key hole opening 164 is formed adjacent to the top 146 of the support member wall 132 and adjacent to each side wall 136, 140. Another key hole opening 164 is formed nearer to the bottom 147 of the support member wall 132 and adjacent to the first side wall 136. The fastening opening 168 may be formed beneath the opening 148 and nearer to the second side wall 140 than the first side wall 136. The spacing of the openings on the support member wall 132 facilitates secure support of the removable compartment 124 on the support member 108. In alternative embodiments, the openings can be formed in different locations along the support member wall 132 to facilitate secure support of the removable compartment 124 on the support member 108.
Turning now to
In some alternative embodiments, the key hole openings 164 can be provided on the support member 108 and the corresponding fixed mounts 172 can be provided on the support member wall 132. Such fixed mounts 172 project outwardly substantially perpendicularly from the support member wall 132 in a direction opposite to the first and second side walls 136, 140. In such embodiments, the key hole openings 164 are oriented such that the larger portions 184 are arranged above the smaller portions 180 to enable the fixed mounts 172 on the removable compartment 124 to rest, via gravity, in the smaller portions 180 of the key hole openings 164 in the support member 108. In other alternative embodiments, the fixed mounts can be hook-shaped projections configured to be inserted into correspondingly shaped openings.
Returning now to
The removable compartment 124 described above facilitates passage of dust and debris through the compartment and into an attached vacuum source due to the shapes of the support member wall 132, the first side wall 136, and the second side wall 140 as well as the baffles 152 and the wedge 160. Additionally, the support member 108 and removable compartment 124 described above facilitate easy removal of the removable compartment 124 for cleaning out dust and debris which are not passed through the compartment, and easy replacement of the removable compartment 124 for subsequent reuse.
The removable compartment 124 is removed from the support member 108 by first removing the fastening member 176 from the fastening opening 168 and the corresponding opening in the support member 108. Access to the fastening member 176 is facilitated by the access area 196 in the outward wall 144. In embodiments of the removable compartment 124 having no fastening opening 168 and no fastening member 176, this first action is unnecessary. Once the fastening member 176 has been removed from the fastening opening 168 (if applicable), the entire removable compartment 124 can be lifted upwardly relative to the support member 108. The upward movement of the removable compartment 124 lifts the smaller portions 180 of the key hole openings off the necks 192 of the fixed mounts 172 and aligns the heads 188 of the fixed mounts 172 with the larger portions 184 of the corresponding key hole openings 164. Once the heads 188 are aligned with the larger portions 184, the removable compartment 124 can be moved away from the support member 108, passing the heads 188 through the corresponding larger portions 184, to disengage the removable compartment 124 from the support member 108. Next, the removable compartment 124 can be lowered down between the support member 108 and the blade 34 to a position below the frame assembly 104 and removed from below the undercarriage assembly 100. Because the opening 148 extends all the way to the top 146 of the support member wall 132, the removable compartment 124 can be lowered down and removed from the frame assembly 104 without interfering with the drive shaft 128 or any other portion of the frame assembly 104.
Once the removable compartment 124 is removed from the undercarriage assembly 100, accumulated dust and debris is easily eliminated from the removable compartment 124 by dumping, brushing, vacuuming, or otherwise emptying out the removable compartment 124. Once the removable compartment 124 is cleaned, it is thereafter easily reattachable to the undercarriage assembly 100 by reversing the removal process. Specifically, to reattach the removable compartment 124 to the undercarriage assembly 100, the removable compartment 124 is first placed under the blade 34 and then lifted upwardly so that the blade 34 is generally received therein. The opening 148 prevents interference of the removable compartment 124 with other features of the undercarriage assembly 100 while raising the removable compartment 124 to receive the blade 34. The removable compartment 124 is then moved toward the support member 108 such that the heads 188 of the fixed mounts 172 pass through the larger portions 184 (shown in
As shown in
To remove the removable compartment 124′ from the support member 108′ for cleaning, the fastening members are accessed within the removable compartment 124′ via access areas (not shown) like the access area 196 shown in
Once the removable compartment 124′ has been cleaned, the removable compartment 124′ can be reattached to the support member 108′ by reversing the removal process. Specifically, the removable compartment 124′ is arranged under the blade 34′ and then lifted upwardly so that the blade 34′ is generally received therein. The opening 148′ prevents interference of the removable compartment 124′ with the drive shaft 128′ or other features of the undercarriage assembly 100′ while raising the removable compartment 124′ to receive the blade 34′. The removable compartment 124′ is then moved toward the support member 108′ to position the hooks 203′ above and aligned with the hook slots 205′. The removable compartment 124′ is then dropped downwardly so that the hooks 203′ are received within the hook slots 205′. Finally, the fastening members 176′ are introduced into the removable compartment 124′ via the access areas and are inserted through corresponding fastening openings 168′ in the support member wall 132′ and into corresponding fastening openings in the support member 108′. The reception of the hooks 203′ within the hook slots 205′ and of the fastening members 176′ within the fastening openings 168′ and the fastening openings on the support member 108′ securely attaches the removable compartment 124′ to the support member 108′ such that the table saw assembly is ready to be used for additional cutting operations.
In an alternative embodiment, the frame assembly and the removable compartment can be coupled to one another by magnets elements. The magnet elements can be integrated into the support member and the removable compartment, mounted on the support member and the removable compartment, or otherwise affixed to the support member and the removable compartment. In another alternative embodiment, the removable compartment can be formed of transparent material to enable viewing the inside of the removable compartment to facilitate attachment and removal of the removable compartment and to assist the user in knowing when the compartment needs to be cleaned.
While the invention has been illustrated and described in detail in the drawings and foregoing description, the same should be considered illustrative and not restrictive in character. Only the preferred embodiments have been presented and all changes, modifications and further applications that come within the spirit of the invention are desired to be protected.
This application claims priority to U.S. provisional patent application No. 61/777,302, filed on Mar. 12, 2013 and entitled “Removable Dust Compartment for Power Tool,” the disclosure of which is incorporated herein by reference in its entirety.
Filing Document | Filing Date | Country | Kind |
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PCT/US2014/021671 | 3/7/2014 | WO | 00 |
Number | Date | Country | |
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61777302 | Mar 2013 | US |