US20020111127A1 - Exhaust assembly for a pneumatic sanding device - Google Patents
Exhaust assembly for a pneumatic sanding device Download PDFInfo
- Publication number
- US20020111127A1 US20020111127A1 US09/781,257 US78125701A US2002111127A1 US 20020111127 A1 US20020111127 A1 US 20020111127A1 US 78125701 A US78125701 A US 78125701A US 2002111127 A1 US2002111127 A1 US 2002111127A1
- Authority
- US
- United States
- Prior art keywords
- annular cover
- outlet
- sanding
- extension tube
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
- B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/03—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement
Definitions
- the present invention relates to a pneumatic sander which has an exhaust assembly with a control valve to change the passages in the assembly so as to guide the powder during grinding to desired position.
- a conventional pneumatic grinding device 10 is shown in FIGS. 1 and 2, and includes an annular cover 17 which is connected to an underside of a body 11 and a motor shaft balancer (not shown) is rotatably received in the body 11 .
- a sanding disk or sanding pad 16 is driven by the motor shaft balancer and located at an underside of the annular cover 17 .
- a block 14 extends radially outward from the body 11 and an inlet 12 and an outlet 13 are respectively defined through the block 14 and communicate with an interior of the body 11 . Pressurized air is introduced into the body 11 via the inlet 12 and flows out from the outlet 13 .
- FIG. 3 shows another type of sanding powder collection system and includes an auxiliary tube 19 which has a collar 190 mounted to the block 14 and a seal 191 seals the outlet 13 .
- the auxiliary tube 19 is connected to the tube 171 and has an open end which is connected to a hose of a vacuum cleaner 192 . By this way, the sanding powder is sucked by the vacuum cleaner 192 via the auxiliary tube 19 .
- the sanding device has three way to deal with the sanding powder, one of which is to blow the power from the outlet 13 together with the exhaust air flow, the second is to cooperate with a bag 181 as shown in FIG. 2, and the third way is to connect a vacuum cleaner 192 as shown in FIG. 3 to suck the power.
- the users have to choose specific items to be connected to the block 14 or the tube 171 whichever the bag 18 or the vacuum cleaner 192 are to be used.
- Each way of collecting the sanding powder involves a lot of parts and takes time to install or disengage from the sanding device.
- the present invention intends to provide an exhaust assembly that has a control valve which is rotated to change the passages to let the exhaust air flow go through the designated passage.
- an exhaust assembly of a sanding device comprising an annular cover mounted to the motor shaft balancer and a sanding pad is connected to the motor shaft balancer.
- An exhaust tube extends from the annular cover and holes are defined in the sanding pad and communicate with an interior of the annular cover.
- a casing is engaged with the annular cover and a hosing extends from the casing.
- An inlet and an outlet are respectively defined through the hosing and communicate with an interior of the casing.
- a first passage is defined in the hosing and communicates with the aid inlet and the outlet.
- An extension tube extends from the hosing and communicates with the first passage and the outlet.
- the extension tube is engaged with the annular cover.
- a control valve is rotatably received in the first passage and has a first section and a second section.
- a through hole is defined radially through the first section and a notch is defined in an outer periphery of the second section.
- the first section is located to block the extension tube and the second section is located to block the outlet.
- the primary object of the present invention is to provide an exhaust assembly for a sanding device wherein the sanding device can be cooperated with a dust bag or a vacuum cleaner by rotating the control member.
- FIG. 1 is a bottom view to show a conventional casing of a sanding device
- FIG. 2 is a cross sectional view to show a dust bag is connected to the conventional sanding device
- FIG. 3 is a cross sectional view to show a vacuum cleaner is connected to the conventional sanding device
- FIG. 4 is a perspective view to show the exhaust assembly and the sanding device of the present invention.
- FIG. 5 is an exploded view to show the exhaust assembly and the sanding device of the present invention
- FIG. 6 is a top cross sectional view to show the control member is positioned to communicate the outlet and the annular cover;
- FIG. 7 is a side cross sectional view to show the situation as illustrated in FIG. 6;
- FIG. 8 is a top cross sectional view to show the control member is positioned to communicate the annular cover and the extension tube;
- FIG. 9 is a side cross sectional view to show the situation as illustrated in FIG. 8;
- FIG. 10 is an exploded view to show another embodiment of the exhaust assembly of the present invention wherein a connection member is inserted in the extension tube;
- FIG. 11 is a cross sectional view to show a dust bag is connected to the collection tube on the exhaust tube and the connection member is received in the extension tube;
- FIG. 12 is a top cross sectional view to show the control member is positioned to block the extension tube and the outlet;
- FIG. 13 is a side cross sectional view to show the situation as illustrated in FIG. 12;
- FIG. 14 is a cross sectional view to show a vacuum cleaner is connected to the collection tube wherein the control member is located to communicate the extension tube and an interior of the casing, and
- FIG. 15 is a cross sectional view to show the control member is located to communicate the extension tube and an interior of the casing as shown in FIG. 14.
- the sanding device of the present invention comprises a sanding pad 26 connected to an underside of a motor shaft balancer 25 and a power assembly 24 connected to a top of the motor shaft balancer 25 .
- the sanding pad 26 has holes 28 defined therethrough and an annular cover 27 is mounted to the motor shaft balancer 25 , wherein the holes 28 communicate with an interior of the annular cover 27 .
- An exhaust tube 271 extends from the annular cover 27 and an engaging recess 270 is defined in an inner periphery of a top of the annular cover 27 so that the engaging recess 270 communicates with the exhaust tube 271 .
- the sanding pad 26 is connected to the annular cover 27 and exposed to an underside of the annular cover 27 .
- a casing 21 is engaged with the annular cover 27 and receives the power assembly 24 in the casing 21 .
- a hosing 210 extends from the casing 21 and an inlet 22 and an outlet 23 are respectively defined through the hosing 210 and communicate with the interior of the casing 21 .
- a first passage 231 is defined transversely in the hosing 210 and communicates with the outlet.
- An extension tube 232 extends from the hosing 210 and communicates with the first passage 231 and the outlet 23 .
- the extension tube 232 is engaged with the engaging recess 270 of the annular cover 27 .
- a collection tube 30 is connected to the exhaust tube 271 so as to be connected a dust bag 31 as shown in FIG. 11 or a vacuum cleaner 33 as shown in FIG. 14.
- a control valve 40 is rotatably received in the first passage 231 and has a first section 44 and a second section 42 .
- a through hole 43 is defined radially through the first section 44 and a notch 41 is defined in an outer periphery of the second section 42 .
- the first section 44 is located to block the extension tube 232 and the second section 42 is located to block the outlet 23 .
- FIGS. 6 and 7 show that when the sanding device is used to send the sanding powder in the annular cover 27 from the outlet 23 , the second section 42 blocks the extension tube 232 so that the exhaust air flow passes through the notch 41 and flows out from the outlet 23 .
- FIGS. 8 and 9 show that when the sanding device is used to be cooperated with the dust bag 31 connected to the collection tube 30 , the control member 40 is rotated to let the second section 42 block the outlet 23 and the exhaust air flow from the annular cover 27 is guided into the extension tube 232 and the sanding powder goes into the dust bag 31 via the dust bag 31 .
- FIGS. 10 and 11 show that an L-shaped connection member 50 which has a first end inserted in the extension tube 232 and a tunnel defined through the connection member 50 .
- a second end of the connection member 50 communicates with the exhaust tube 271 of the annular cover 27 .
- a tapered guide member 51 is connected to a lower end of the connection member 50 and located in the exhaust tube 271 .
- the control member 50 is rotated to let the second section 42 block the outlet 23 and the air flow enters the exhaust tube 271 to suck sanding powder in the annular cover 27 to enter the exhaust tube 271 and to be collected in the dust bag 31 .
- the guide member 51 guides the air flow from the interior of the annular cover 27 to the exhaust tube 271 and the collection tube 30 .
- FIGS. 12 to 15 show that the control member 40 is rotated to open the outlet 23 and block the extension tube 232 , and a vacuum cleaner 33 is connected to the collection tube 30 . Accordingly, the exhaust air flow goes out from the outlet 23 and the vacuum cleaner 33 also sucks the sanding powder in the annular cover 27 .
- the sanding device of the present invention can be easily change the functions by rotating the control member 40 to cooperate with a dust bag 31 or a vacuum cleaner 33 without changing any part or adding any par.
Abstract
An exhaust assembly of a sanding device includes a first passage and an extension tube which are respectively defined in a hosing of the casing of the sanding device. The hosing has an inlet and an outlet. The first passage communicates with the outlet and inlet, and the extension tube extends from the hosing. The extension tube is engaged with an annular cover which communicates with the sanding pad and has an exhaust tube. A control valve is rotatably received in the first passage to block or open the outlet or the extension tube. A bag or a vacuum cleaner can be connected to the exhaust tube of the annular cover to collect sanding powder or sanding debris.
Description
- The present invention relates to a pneumatic sander which has an exhaust assembly with a control valve to change the passages in the assembly so as to guide the powder during grinding to desired position.
- A conventional
pneumatic grinding device 10 is shown in FIGS. 1 and 2, and includes anannular cover 17 which is connected to an underside of abody 11 and a motor shaft balancer (not shown) is rotatably received in thebody 11. A sanding disk orsanding pad 16 is driven by the motor shaft balancer and located at an underside of theannular cover 17. Ablock 14 extends radially outward from thebody 11 and aninlet 12 and anoutlet 13 are respectively defined through theblock 14 and communicate with an interior of thebody 11. Pressurized air is introduced into thebody 11 via theinlet 12 and flows out from theoutlet 13. Atube 171 extends from theannular cover 17 and acommunication tube 18 is connected between theoutlet 13 and thetube 171 so that the exhaust air flow will suck the sanding powder from thecommunication tube 18 and being collected in abag 181 connected to theoutlet 13. FIG. 3 shows another type of sanding powder collection system and includes anauxiliary tube 19 which has acollar 190 mounted to theblock 14 and aseal 191 seals theoutlet 13. Theauxiliary tube 19 is connected to thetube 171 and has an open end which is connected to a hose of avacuum cleaner 192. By this way, the sanding powder is sucked by thevacuum cleaner 192 via theauxiliary tube 19. Therefore, the sanding device has three way to deal with the sanding powder, one of which is to blow the power from theoutlet 13 together with the exhaust air flow, the second is to cooperate with abag 181 as shown in FIG. 2, and the third way is to connect avacuum cleaner 192 as shown in FIG. 3 to suck the power. The users have to choose specific items to be connected to theblock 14 or thetube 171 whichever thebag 18 or thevacuum cleaner 192 are to be used. Each way of collecting the sanding powder involves a lot of parts and takes time to install or disengage from the sanding device. - The present invention intends to provide an exhaust assembly that has a control valve which is rotated to change the passages to let the exhaust air flow go through the designated passage.
- In accordance with one aspect of the present invention, there is provided an exhaust assembly of a sanding device and comprising an annular cover mounted to the motor shaft balancer and a sanding pad is connected to the motor shaft balancer. An exhaust tube extends from the annular cover and holes are defined in the sanding pad and communicate with an interior of the annular cover. A casing is engaged with the annular cover and a hosing extends from the casing. An inlet and an outlet are respectively defined through the hosing and communicate with an interior of the casing. A first passage is defined in the hosing and communicates with the aid inlet and the outlet. An extension tube extends from the hosing and communicates with the first passage and the outlet. The extension tube is engaged with the annular cover. A control valve is rotatably received in the first passage and has a first section and a second section. A through hole is defined radially through the first section and a notch is defined in an outer periphery of the second section. The first section is located to block the extension tube and the second section is located to block the outlet.
- The primary object of the present invention is to provide an exhaust assembly for a sanding device wherein the sanding device can be cooperated with a dust bag or a vacuum cleaner by rotating the control member.
- These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention.
- FIG. 1 is a bottom view to show a conventional casing of a sanding device;
- FIG. 2 is a cross sectional view to show a dust bag is connected to the conventional sanding device;
- FIG. 3 is a cross sectional view to show a vacuum cleaner is connected to the conventional sanding device;
- FIG. 4 is a perspective view to show the exhaust assembly and the sanding device of the present invention;
- FIG. 5 is an exploded view to show the exhaust assembly and the sanding device of the present invention;
- FIG. 6 is a top cross sectional view to show the control member is positioned to communicate the outlet and the annular cover;
- FIG. 7 is a side cross sectional view to show the situation as illustrated in FIG. 6;
- FIG. 8 is a top cross sectional view to show the control member is positioned to communicate the annular cover and the extension tube;
- FIG. 9 is a side cross sectional view to show the situation as illustrated in FIG. 8;
- FIG. 10 is an exploded view to show another embodiment of the exhaust assembly of the present invention wherein a connection member is inserted in the extension tube;
- FIG. 11 is a cross sectional view to show a dust bag is connected to the collection tube on the exhaust tube and the connection member is received in the extension tube;
- FIG. 12 is a top cross sectional view to show the control member is positioned to block the extension tube and the outlet;
- FIG. 13 is a side cross sectional view to show the situation as illustrated in FIG. 12;
- FIG. 14 is a cross sectional view to show a vacuum cleaner is connected to the collection tube wherein the control member is located to communicate the extension tube and an interior of the casing, and
- FIG. 15 is a cross sectional view to show the control member is located to communicate the extension tube and an interior of the casing as shown in FIG. 14.
- Referring to FIGS. 4 and 5, the sanding device of the present invention comprises a
sanding pad 26 connected to an underside of amotor shaft balancer 25 and apower assembly 24 connected to a top of themotor shaft balancer 25. Thesanding pad 26 hasholes 28 defined therethrough and anannular cover 27 is mounted to themotor shaft balancer 25, wherein theholes 28 communicate with an interior of theannular cover 27. Anexhaust tube 271 extends from theannular cover 27 and anengaging recess 270 is defined in an inner periphery of a top of theannular cover 27 so that theengaging recess 270 communicates with theexhaust tube 271. Thesanding pad 26 is connected to theannular cover 27 and exposed to an underside of theannular cover 27. - A
casing 21 is engaged with theannular cover 27 and receives thepower assembly 24 in thecasing 21. Ahosing 210 extends from thecasing 21 and aninlet 22 and anoutlet 23 are respectively defined through thehosing 210 and communicate with the interior of thecasing 21. Afirst passage 231 is defined transversely in thehosing 210 and communicates with the outlet. Anextension tube 232 extends from thehosing 210 and communicates with thefirst passage 231 and theoutlet 23. Theextension tube 232 is engaged with theengaging recess 270 of theannular cover 27. Acollection tube 30 is connected to theexhaust tube 271 so as to be connected adust bag 31 as shown in FIG. 11 or avacuum cleaner 33 as shown in FIG. 14. - A
control valve 40 is rotatably received in thefirst passage 231 and has afirst section 44 and asecond section 42. A throughhole 43 is defined radially through thefirst section 44 and anotch 41 is defined in an outer periphery of thesecond section 42. Thefirst section 44 is located to block theextension tube 232 and thesecond section 42 is located to block theoutlet 23. - FIGS. 6 and 7 show that when the sanding device is used to send the sanding powder in the
annular cover 27 from theoutlet 23, thesecond section 42 blocks theextension tube 232 so that the exhaust air flow passes through thenotch 41 and flows out from theoutlet 23. - FIGS. 8 and 9 show that when the sanding device is used to be cooperated with the
dust bag 31 connected to thecollection tube 30, thecontrol member 40 is rotated to let thesecond section 42 block theoutlet 23 and the exhaust air flow from theannular cover 27 is guided into theextension tube 232 and the sanding powder goes into thedust bag 31 via thedust bag 31. - FIGS. 10 and 11 show that an L-
shaped connection member 50 which has a first end inserted in theextension tube 232 and a tunnel defined through theconnection member 50. A second end of theconnection member 50 communicates with theexhaust tube 271 of theannular cover 27. Atapered guide member 51 is connected to a lower end of theconnection member 50 and located in theexhaust tube 271. Thecontrol member 50 is rotated to let thesecond section 42 block theoutlet 23 and the air flow enters theexhaust tube 271 to suck sanding powder in theannular cover 27 to enter theexhaust tube 271 and to be collected in thedust bag 31. Theguide member 51 guides the air flow from the interior of theannular cover 27 to theexhaust tube 271 and thecollection tube 30. - FIGS.12 to 15 show that the
control member 40 is rotated to open theoutlet 23 and block theextension tube 232, and avacuum cleaner 33 is connected to thecollection tube 30. Accordingly, the exhaust air flow goes out from theoutlet 23 and thevacuum cleaner 33 also sucks the sanding powder in theannular cover 27. - The sanding device of the present invention can be easily change the functions by rotating the
control member 40 to cooperate with adust bag 31 or avacuum cleaner 33 without changing any part or adding any par. - While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims (4)
1. A sanding device comprising:
a sanding pad connected to an underside of a motor shaft balancer and a power assembly connected to a top of said motor shaft balancer, said sanding pad having holes defined therethrough;
an annular cover mounted to said motor shaft balancer and an exhaust tube extending from said annular cover, said sanding pad connected to said annular cover and said holes in said sanding pad communicating with an interior of said annular cover;
a casing engaged with said annular cover and a hosing extending from said casing, an inlet and an outlet respectively defined through said hosing and communicating with an interior of said casing, a first passage defined in said hosing and communicating with said outlet, an extension tube extending from said hosing and communicating with said first passage and said outlet, said extension tube engaged with said annular cover, and
a control valve rotatably received in said first passage and having a first section and a second section, a through hole defined radially through said first section and a notch defined in an outer periphery of said second section, said first section located to block said extension tube and said second section located to block said outlet.
2. The device as claimed in claim 1 further comprising an L-shaped connection member which has a first end inserted in said extension tube and a tunnel defined through said connection member, a second end of said connection member communicating with said exhaust tube of said annular cover, a guide member connected to a lower end of said connection member and located in said exhaust tube.
3. The device as claimed in claim 2 wherein said guide member is a tapered member.
4. The device as claimed in claim 1 further comprising an engaging recess defined in an inner periphery of a top of said annular cover and communicating with said exhaust tube, said extension tube engaged with said engaging recess.
Priority Applications (1)
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US09/781,257 US6447387B1 (en) | 2001-02-13 | 2001-02-13 | Exhaust assembly for a pneumatic sanding device |
Applications Claiming Priority (1)
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US09/781,257 US6447387B1 (en) | 2001-02-13 | 2001-02-13 | Exhaust assembly for a pneumatic sanding device |
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US20020111127A1 true US20020111127A1 (en) | 2002-08-15 |
US6447387B1 US6447387B1 (en) | 2002-09-10 |
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US09/781,257 Expired - Lifetime US6447387B1 (en) | 2001-02-13 | 2001-02-13 | Exhaust assembly for a pneumatic sanding device |
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Cited By (13)
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US20030083005A1 (en) * | 2001-10-31 | 2003-05-01 | Ingersoll-Rand Company | Interchangeable handle grip assembly, conversion kit, and tools incorporating same |
US20050020196A1 (en) * | 2003-07-10 | 2005-01-27 | Soartec Co., Ltd. | Pneumatic sanding machine |
US20050034715A1 (en) * | 2001-06-13 | 2005-02-17 | Terpstra Enterprises Pty Ltd. | Extraction apparatus |
US7222679B1 (en) | 2006-03-17 | 2007-05-29 | Snap-On Incorporated | Random orbital sander |
US20080254723A1 (en) * | 2007-04-12 | 2008-10-16 | Lamarche Paul | Expansible sanding block exhibiting oblique extending surfaces |
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US20110177766A1 (en) * | 2007-04-12 | 2011-07-21 | Lamarche Paul | Expansible sanding block exhibiting oblique extending surfaces |
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US11511391B2 (en) * | 2016-07-29 | 2022-11-29 | Festool Gmbh | Surface-machining appliance with a suction connection |
US10918251B2 (en) * | 2018-12-28 | 2021-02-16 | Irobot Corporation | Debris collection device for autonomous cleaning robots |
US11317773B2 (en) | 2018-12-28 | 2022-05-03 | Irobot Corporation | Debris collection device for autonomous cleaning robots |
US11723500B2 (en) | 2018-12-28 | 2023-08-15 | Irobot Corporation | Debris collection device for autonomous cleaning robots |
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