Sander having adjustable sander member

Information

  • Patent Grant
  • 6283841
  • Patent Number
    6,283,841
  • Date Filed
    Friday, April 21, 2000
    24 years ago
  • Date Issued
    Tuesday, September 4, 2001
    23 years ago
  • Inventors
  • Examiners
    • Banks; Derris H.
    Agents
    • Baxley, Esq.; Charles E.
Abstract
A sander includes a base having a platform for supporting a work piece. A casing is rotatably secured to the base at a pivot shaft and has a plate for supporting a sander member. A lock device may secure the casing and the sander member to the base at any selected angular positions. The casing has two rotatable barrels for supporting the sander member. A motor is secured to the casing and secured to one of the barrels for driving the sander member via the barrels. The barrels may be adjusted relative to each other to tighten the sander member.
Description




BACKGROUND OF THE INVENTION




1. Field of the Invention




The present invention relates to a sander, and more particularly to a sander having an adjustable sander member.




2. Description of the Prior Art




Typical sanders comprise one or more sander members rotatably secured in a housing and may not be adjusted relative to the housing, particularly may not be adjusted relative to the housing to various angular positions.




The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional sanders.




SUMMARY OF THE INVENTION




The primary objective of the present invention is to provide a sander having a sander member adjustable to various angular positions for facilitating the sanding operation to the work pieces.




In accordance with one aspect of the invention, there is provided a sander comprising a base including a platform secured thereon for supporting a work piece, a casing rotatably secured to the base at a pivot shaft, a sander member engaged on the casing and rotatable in concert with the casing about the pivot shaft for sanding the work piece, and means for securing the casing to the base at selected angular positions. The sander member may be rotated and adjusted relative to the platform at any selected angular position, and may be rotated and adjusted relative to the platform between a vertical position relative to the platform and a horizontal position parallel to or flush with the platform for allowing the work piece to be easily machined by the sander member.




The casing includes a plate extended therefrom and having a curved slot formed therein, the securing means includes a lock device engaged through the curved slot of the plate to lock the plate to the base. The lock device includes a pole extended from the base and slidably received in the curved slot of the plate, and a cam device pivotally secured to the pole and engaged with the plate for securing the plate to the base at any selected angular position.




The casing includes a first barrel and a second barrel rotatably secured thereon, the sander member is engaged around the first and the second barrels. A driving device is further provided for driving the sander member and includes a motor secured to the plate and having a spindle secured to the first barrel, such that the sander member may be driven by the motor via the barrels. A table is further secured to the motor and provided beside the first barrel for supporting the work piece to be machined by the sander member that is engaged over the first barrel.




The casing includes a support for rotatably supporting the second barrel. A device is further provided for moving the support and the second barrel relative to the casing to tighten and to release the sander member.




A stop is further secured to the casing and engaged over the sander member for engaging with the work piece and for allowing the work piece to be easily machined by the sander member. A cover is secured to the casing for shielding the first and the second barrels. A cap is detachably secured to the cover for shielding the first barrel and the sander member. A lid is rotatably secured to the cap for shielding the first barrel. The cap may include a port coupled to a vacuum device which may be used for drawing and collecting the dirt and the sanded materials removed from the work piece by the sander member.




Further objectives and advantages of the present invention will become apparent from a careful reading of a detailed description provided hereinbelow, with appropriate reference to accompanying drawings.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is an exploded view of a sander in accordance with the present invention;





FIG. 2

is a front perspective view of the sander;





FIG. 3

is a front view of the sander;





FIG. 4

is a front view of the sander, similar to

FIG. 3

, illustrating the operation of the sander;





FIG. 5

is a rear perspective view of the sander, in which the sander device has been rotated to a lay down position.





FIGS. 6 and 7

are side views illustrating the operation of the sander;





FIG. 8

is a front perspective view illustrating the application of the sander.





FIG. 9

is a front prespective view of a shielding cap.











DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT




Referring to the drawings, and initially to

FIGS. 1-3

, a sander in accordance with the present invention comprises a base


10


including a switch box


11


disposed therein and including a switch


12


attached thereto for controlling the operation of the sander. The base


10


includes a housing


14


secured on top thereof, and includes a pair of panels


16


secured to the bottom of a platform


15


and slidably received in and adjustable relative to the housing


14


. The panels


16


each includes an oblong hole


17


formed therein for slidably receiving a fastener


18


which may secure the platform


15


at different heights or angular positions relative to the housing


14


(

FIGS. 3

,


4


). The housing


14


includes a bracket


20


secured thereto and having one or more sleeves


23


provided therein.




A casing


21


is rotatably secured to the housing


14


at a pivot shaft


22


which is engaged through a sleeve


24


of the casing


21


and engaged through the sleeves


23


of the bracket


20


of the housing


14


, such that the casing


21


may be rotated relative to the housing


14


about the pivot shaft


22


. The casing


21


includes a plate


25


extended therefrom and perpendicular to the pivot shaft


22


and having a curved slot


26


formed therein. A motor


27


is secured to the plate


25


by such as fasteners and includes a hub


28


provided thereon for receiving a post


37


that is extended from a table


36


which may be secured to the hub


28


of the motor


27


with the fastener


38


. A barrel


40


is secured to the spindle


29


of the motor


27


and driven by the motor


27


. The table


36


includes an opening


39


formed therein for receiving the barrel


40


. A pole


30


is secured to the base


10


and slidably received in the curves slot


26


of the plate


25


. A cam


31


is pivotally secured to the pole


30


at a pivot pin


32


, and a lever


33


is secured to the cam


31


for rotating the cam


31


and for actuating the cam


31


to lock the plate


25


to the base


10


and for securing the plate


25


and the casing


21


to the base


10


and the housing


14


at the selected angular positions (

FIGS. 6

,


7


). A gasket


34


may be engaged on the pole


30


and engaged between the plate


25


and the cam


31


.




Another barrel


41


is rotatably secured in a support


42


at a pivot axle


43


which has two ends slidably engaged through a pair of grooves


44


of the casing


21


. The support


42


includes an extension


46


slidably engaged through an ear


47


of the casing


21


. A stud


49


is secured on the free end of the extension


46


and is engageable with the ear


47


of the casing


21


for preventing the support


42


from being disengaged from the casing


21


. A handle


50


is pivotally secured to the extension


46


at a pivot rod


51


and is slidably received in a channel


52


of the casing


21


(

FIGS. 5

,


8


). A spring


48


is engaged on the extension


46


and engaged between the pivot rod


51


and the ear


47


of the casing


21


or between the support


42


and the casing


21


for biasing the barrel


41


away from the barrel


40


. A sander member


60


(

FIGS. 2

,


8


) is engaged around the barrels


40


,


41


and driven by the motor


27


via the barrel


40


for sanding purposes. The sander member


60


may thus be attached on the casing


21


and may be rotated in concert with the casing


21


about the pivot shaft


22


. The handle


50


may move support


42


and the barrel


41


relative to the casing


21


and the barrel


40


for tightening the sander member


60


. A fastener


53


is threaded through a flange


54


of the casing


21


(

FIGS. 2

,


8


) and is threaded through the pivot axle


43


for adjusting or securing the pivot axle


43


and the barrel


41


and the support


42


to the casing


21


. The fastener


53


may further thread through a flange


56


of the support


42


(FIG.


1


). A spring


55


may be engaged on the fastener


53


and engaged with the pivot axle


43


for applying a resilient force between the pivot axle


43


and the fastener


53


or the support


42


.




A stop


61


is secured to the casing


21


with one or more fasteners


62


and includes an arm


63


extended therefrom. The sander member


60


is slidably received between the casing


21


and the arm


63


which may engage with the work piece and which may retain the work piece relative to the casing


21


for allowing the work piece to be easily machined by the sander member


60


. A cover


57


is secured to the casing


21


with a quick release device


58


for covering the support


42


and the barrel


41


and the sander member


60


. A cap


70


is provided for shielding a portion of the sander member


60


that is engaged on the barrel


40


(

FIGS. 2-5

) and includes a latch device


71


(

FIG. 9

) for engaging with the cover


57


and for securing to the cover


57


, and includes a port


72


provided thereon for coupling to a vacuum device which may draw and collect the dust sanded from the work piece. A lid


73


is rotatably secured to the cap


70


at a pivot pin


74


(

FIG. 2

) with a fastener


76


(FIG.


1


), and includes a knob


77


for rotating the lid


73


to shield the barrel


40


(FIGS.


2


-


5


).




In operation, as shown in

FIGS. 2 and 5

, the casing


21


may be adjusted relative to the housing


14


and the platform


15


to any suitable angular position and may be secured to the base


10


and the housing


14


with the cam


31


. Particularly, the sander member


60


may be rotated to a position perpendicular to the platform


15


(

FIG. 2

) or to a position parallel to or flush with the platform


15


such that the work piece may be easily machined. In addition, as shown in

FIG. 8

, when the cap


70


is removed from the cover


57


, the sander member


60


engaged around the barrel


40


may also be used for sanding the work piece, particularly for sanding the surfaces in the corner areas of the work piece. The table


36


may be secured to the motor


27


for supporting the work piece to be machined by the sander member


60


that is engaged around the barrel


40


.




Accordingly, the sander in accordance with the present invention includes a sander member adjustable to various angular positions for facilitating the sanding operation to the work pieces.




Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.



Claims
  • 1. A sander comprising:a base including a platform secured thereon for supporting a work piece, a casing rotatably secured to said base at a pivot shaft, said casing including a plate extended therefrom and having a curved slot formed therein, a sander member engaged on said casing and rotatable in concert with said casing about said pivot shaft for sanding the work piece, and means for securing said casing to said base at selected angular positions, said securing means including a lock device engaged through said curved slot of said plate to lock said Plate to said base, said lock device including a Pole extended from said base and slidably received in said curved slot of said plate, and a cam device pivotally secured to said Pole and engaged with said plate for securing said plate to said base.
  • 2. The sander according to claim 1, wherein said casing includes a first barrel and a second barrel rotatably secured thereon, said sander member is engaged around said first and said second barrels.
  • 3. The sander according to claim 4 further comprising means for driving said sander member.
  • 4. The sander according to claim 3, wherein said driving means includes a motor secured to said plate and having a spindle secured to said first barrel.
  • 5. The sander according to claim 4, wherein said casing includes a support for rotatably supporting said second barrel.
  • 6. The sander according to claim 5 further comprising means for moving said support and said second barrel relative to said casing to tighten said sander member.
  • 7. A sander comprising:a base including a platform secured thereon for supporting a work piece, a casing rotatably secured to said base at a pivot shaft, said casing including a first barrel and a second barrel rotatable secured thereon, a sander member engaged on said casing and engaged around said first and said second barrels and rotatable in concert with said casing about said pivot shaft for sanding the work piece, means for securing said casing to said base at selected angular positions, means for driving said sander member, said driving means including a motor secured to said plate and having a spindle secured to said first barrel, and a table secured to said motor and provided beside said first barrel.
  • 8. A sander comprising:a base including a platform secured thereon for supporting a work piece, a casing rotatably secured to said base at a pivot shaft, a sander member engaged on said casing and rotatable in concert with said casing about said pivot shaft for sanding the work piece, means for securing said casing to said base at selected angular positions, and a stop secured to said casing and engaged over said sander member for engaging with the work piece.
  • 9. A sander comprising:a base including a platform secured thereon for supporting a work piece, a casing rotatably secured to said base at a pivot shaft, a sander member engaged on said casing and rotatable in concert with said casing about said pivot shaft for sanding the work piece, means for securing said casing to said base at selected angular positions, and a cover secured to said casing for shielding said first and said second barrels.
  • 10. The sander according to claim 9, wherein said cover includes a cap detachably secured thereto for shielding said first barrel.
  • 11. The sander according to claim 10, wherein said cover includes a lid rotatably secured to said cap for shielding said first barrel.
US Referenced Citations (4)
Number Name Date Kind
4346536 Bryden Aug 1982
4628641 Lazzari Dec 1986
4939870 Wang Jul 1990
5476409 Wada et al. Dec 1995