JPS61500159A - vacuum sander - Google Patents

Abstract

A housing for a vacuum sanding device consists of a ring or plate spaced above a backup pad to define a chamber, the periphery of the housing is spaced slightly above the backup pad for the whole periphery of the housing and the outer edge of the housing is coterminous, or nearly so, with the edge of the backup pad.

Description

[Detailed description of the invention] Suction housing for vacuum sump field of invention The present invention relates to vacuum sumps, and more particularly to housings for use with such sumps. Regarding.

Background of the invention Vacuum sumps have been known for some time. They are usually rotary sump or double acting However, patents have also been issued for rectangular vacuum sumps. like that An example of a rectangular vacuum sump can be found in Mehrererr, December 13, 1977. U.S. Patent No. 4.062.152. Hoveland of March 10, 1964 3.123.946.2,499.933 of Smul on March 7, 1950 can be found. in a circular vacuum sump (41 cases were observed at sunrise on August 1, 1980). Applicant's Canadian Patent No. 1,080,477; Olmoen's Canadian Patent No. 931.7 61, Hutchins U.S. Patent No. 3.785,092.5 tatler 2 , 895.266, Robert U.S. Pat. No. 4.164.101 and 197 It can be found at 3.862,521 on January 28, 2015.

There are several drawbacks to the structure of the patented prior art devices. Many of them are They are complex, have too many moving parts, and are therefore expensive to manufacture and maintain. It takes. Others do not provide adequate suction adjacent to the immediate workpiece area; If they do proper suction, 1 will sometimes be behind the scenes. With an upper housing spaced substantially outwardly from the The blocker can never reach deep into difficult to reach ranges. do not have.

Summary of the invention The present invention is constructed to overcome many of the drawbacks of the prior art and is If a person holds his or her sandbag in a corner or a corner that is difficult to reach, if not exactly Highly efficient by incorporating a housing that can be brought close to difficult areas It is designed to provide a vacuum sump that is lightweight and easy to use. The third aspect of the present invention Usings are available in double-acting or orbital sump, rotary sump, rectangular prosodic sump and It has been adapted for use with many forms of sump, such as hand blowers and hand blowers. Ru. It can also be used for rectangular vibrating sump.

According to one broad aspect, the invention provides a method for vacuum sumps of the type that includes a backing band. Regarding housing.

The housing has legs on the underside of the board to space the board above the top of the rad. A relatively narrow circumference between the plate with the member and the edge of the housing and the backing pad underneath. Demarcate the side opening...Place the lip member around the uzing, and... The edges are adjacent to, or nearly so, the periphery of the backing pad.

In embodiments of the invention used with circular or rotating racks, the periphery of the housing The part reaches very close to the edge of the backing pad and therefore very close to the sanding surface do. The housing therefore picks up dust all around the rim of the working sump. Helpful.

The backing pads used with vacuum sumps are typically inserted downwards from the rotating mechanism into the housing. One chamber runs all the way to the upper chamber formed by a flexible collar extending into the upper chamber. It has a hole in the center. Formed by a vacuum hole through the backing pad and the housing In combination with a peripheral vacuum inlet, removes dust from sanded surfaces and linings. The suction is forced to pass around the entire circumference of the band. suction housing rim is designed so that when the worker hits the edge, the edge will flex and return to its original position. It is desirable that it is flexible.

In rectangular configurations such as ball sump or hand sump, again...Using There is a gap between the peripheral lip of the board and the top surface of the backing pad, so the vacuum Dust not only passes through the holes in the associated backing pad, but also on the edges of the sanding bronok. It is sucked in all around. The device picks up dust evenly at the front, sides and back Ru.

Brief description of the drawing The present invention is illustrated in the accompanying drawings, in which FIG. 1a is a modified variation of the embodiment of FIG. 1; FIG. FIG. 2 is a fragmentary perspective view of a portion of the housing of the present invention, and FIG. 3 is the same as the first step. 4 is a diagram showing a slightly different arrangement of the housing, and FIG. 5 is a plan view of another embodiment of the invention, and FIG. 5 is a cross-sectional view taken along line 5--5 of FIG. FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 5; FIG. 7 is a cross-sectional view of another embodiment of the invention, and FIG. 8 is a cross-sectional view of another embodiment of the invention. FIG. 9 is a partially cutaway bottom view of the 81st embodiment, and FIG. FIG. 10 is a sectional view of the embodiment shown in FIG. 8, and FIG. 11 is a top view of FIG. 10. 12 is a sectional view similar to FIG. 8 of another embodiment of the present invention.

Referring to FIGS. 1, 1a and 2, a housing 10 according to the present invention includes: Backing pad 12 of a rotary grinder or raceway 7 including vacuum housing 14 It is shown that he is being defeated.

A backing pad 12 is connected to a motor shaft 18 by a stand 16, and the motor The shaft has a backing pad 12 and a grinding wheel disk attached to the bottom surface of the rotating housing. The ring 10 includes an upper plate portion 20 of a circular ring, and this two-sided plate portion has a central straight plate portion 20. A vertical flange 22 and a plate member depending therefrom and extending outwardly and downwardly. and a peripheral lip member 24 extending from the outside. A plurality of legs 26 are provided on the lower surface of the plate member. These legs line the housing plate 20 as shown in FIG. Helps to space it upwardly from pad 12. This interval is subject to special requirements of the work. The length of the legs 26 used can vary depending on the length of the legs 26 used. In any case, backslash The distance between the vacuum housing plate 20 above the top surface of the pad 12 (c) Defining a vacuum chamber communicating with a larger vacuum outlet or opening 30 that is more compartmentalized . In the embodiment of FIG. 1, a resilient seal attached to the body of the vacuum housing 14 A ring 32 extends downwardly and rests on the top surface of the housing plate 20. this The air sucked into the chamber passes through the hole 34 at the bottom of the lining band-2 or through the lip. through a peripheral opening 36 defined between the pad member 24 and the sloped surface 38 of the backing pad. It helps to seal the vacuum chamber so that it does not need to be removed.

A flexible seal ring 32 is releasably connected to suitable vacuum means, not shown. A reservoir conduit 40 may be included.

The embodiment of the invention shown in FIG. 1a is basically the same as that in FIG. Although the tube 40 is separated from the side of the housing 14, the seal ring 32 is not. Yes, no.

The embodiment shown in FIG. 3 is similar to that shown in FIG. legs 27 having slightly different hoops 2 and spacing the plate 21 above the backing pad; is longer than the leg 26 of the embodiment of FIG. Furthermore, the flange 22 shown in FIG. Instead of having a defined circular aperture, the plate 21 has a series of holes 23 into which Air then passes through the holes 34 in the backing pad and upwardly through the peripheral opening 36. into the chamber demarcated by ring 32 and outwardly through vacuum conduit 40. You can pass.

In the embodiment of FIG. 1 or 5, the periphery 25 of the lip 24 and the backing pad are Since the peripheral edges 13 are adjacent to each other, or nearly so, the operator can: 1. Being able to move around areas that are difficult to reach, such as corners, valleys, etc. will be recognized. Housing 10 can be made of flexible plastic material. Therefore, if the lip 24 comes into contact with any part of the cutting surface, the lip will bend. Then return to its original position.

Now, turning to the embodiment of the present invention shown in FIGS. 4-6, the housing of the embodiment shown in FIG. The rod consists of an elongated rectangular plate 42 having a series of depending legs 44; 44 serves to space the plate 42 above the base member 46 and also serves to space the plate 42 above the base member 46; A sanding block or backing band 48 is attached. 1-5 : As in the case of the example in Figure 1, 4, 2 and 3 above the base member 41. The vacuum chamber 5 is divided into sections, and the vacuum chamber has an external part of the vacuum means and a gate-shaped upright flap. A flexible tube 54 is connected to the circular upright flange in communication via a flange 52. One end is connected.

This embodiment of FIGS. 4-6 includes a universal joint generally designated 56 and a pair of universal joints. It includes an upright plate member 58, which may be integral with the base member 46 or separate from the base member 46. through an opening fixed to the base member 46 by a method and defined by a flange 52. and extends upward. The plate 58 is a roll pin 60 to which a T-shaped member 62 is attached. The T-shaped member can be moved horizontally in one direction. Above the member 62 Another roll pin 64 is provided at right angles to the pin 60 at the bottom. The roll pin 64 imparts horizontal movement to the connector 66 attached thereto. Next The connector can be detachably attached to the end of the vacuum vibro 8. The Vacuum Vibro 8 still has an elongated handle to actuate the ring. It also helps with functionality.

5 and 6, the base member 46 is provided with a chamfered edge 70; and the housing plate 72 includes a groove extending outwardly and downwardly from the plate 42, as shown in FIG. A widening peripheral lip 72 is provided so that the tapered edge of the lip 72 and the base It can be seen that the chamfered edges of the plate 46 partition the lower 4 between the peripheries. Because the edge of base member 46 and the distal edge of lip member 72 are adjacent to each other, the operator However, the ring can be moved into corners and other difficult-to-reach locations during the sanding process. That should be noticed.

Turning now to FIG. 7, vacuum ring 76 is the same as the ring in FIGS. 4 and 5. A plate 42 having the same basic arrangement but with a central opening for attachment to the vacuum means. Alternatively, the handle member 80 is integrally formed with the housing plate 78, and Since the handle member 80 is of tubular construction, the handle member includes the plate 78 and the base 8. 4 with an outlet chamber 82 and a suitable outlet 86 attached to the handle, FIG. It communicates with external vacuum means, not shown. As in the embodiment of FIG. The mounting plate 78 is attached to the base 84 by suitable screws 88 extending through the legs 90. A backing pad or block 92 is attached to the bottom edge of the base. It is attached.

A peripheral lip 94 of plate 78 is slightly spaced from a chamfered edge 96 of base 84. As a result, a peripheral opening 98 is formed.

Now, if we turn our attention to Figures 8 and 9, we can see that the housing 9 has at least one circular shape. A backing pad 11 provided with a suction channel 15 is fixed, and two A channel like this is shown. Depending on work requirements and pad diameter, Several concentric or one single channel may be used. Seen in Figure 8 As shown, the channel has the same width as the diameter of the hole 17 provided at the base of the pad 11. It is desirable that it be equal to or slightly larger than that. As shown in the bottom view of the pad in Figure 9. As shown, a circular channel 15 interconnects with the hole 17, while a channel The hole 15a is interconnected with the hole 17a.

Since the suction channel 15.15a is provided, the operator can open the suction hole of the sanding disk. It is unnecessary to align the holes 17 in the pad, and furthermore, the loading device It will be appreciated that it is unnecessary to use centering pins for this purpose. Round Because of the suction channel, the operator uses the outside diameter of the paper and backing pad as a guide. Simply attach the paper to the backing pad using the The hole does not have to be perpendicular to the hole 17 of the pad 11, but if the holes of P and C- are related, Because it is on channel 15'J or 15a, the working valley is on channel 1. 5 and then through hole 17 and into the upper housing.

At the same time, dust also enters the peripheral opening 23 between the housing lip and the edge of the pad 11. It gets sucked in.

Sanding discs with one or two concentric rings of holes are shown in Figures 8 and 9. It will be appreciated that it can be used with any pad.

10 and 11, on the inside surface of the frustoconical skirt 28 of the housing. , a series of shallow ribs 29, shown in dotted lines in FIG. 11, may be provided.

According to these comments, the operator touches the workpiece surface 33 as shown in Figure 1. and apply downward pressure to the edge of the pad ((inner side of the suction skirt and backing pad) The space 31 between the edges of the hand is prevented from being closed off.

FIG. 12 shows another embodiment of the invention. The nylon suction ring 28 is installed as shown in Figure 8. It is attached to the sea urchin lining pad 11. However, additionally, another possibility A flexible cone or skirt is secured at its upper end to the suction housing (not shown) and downward to the surface to be sanded and past the nylon seal ring 28. It is gradually extending. Flexible cone skirts are made of plastic. having inwardly projecting ripples or projections 104 spaced from the surface of the ring 28; and since the skirt 102 is sufficiently flexible, the backing pad and the skirt 2 8 can vibrate or rotate under the skirt without wearing out the pad. Wear.

This additional flexible skirt allows for holes in the backing pad and the bottom of the sanding disc. 15-! It is not necessary to have a height of 17. Because the material is polished with sand; All dirt and dust must be removed from the lining band, suction ring 28 and flexible collar or scarf. This is because it is sucked into the housing between the circumferential surfaces of the tip 102.

In all embodiments of the invention, according to the peripheral aperture, whether the sanoda is circular or Sufficient vacuum suction to remove dust that accumulates anywhere around it, even horizontally. will be recognized. By inhaling through the back, side or front of the device, A much more efficient unit can be provided. The entire arrangement of the present invention All rectangular vibrators, no-ndlinders, pole rings and discs also Q Can be used for long body files. Housing made of nylon or fiber It can be made of various materials such as glass or various alloys.

The present invention allows the backing pad and/or Or trench 34 in Figures 1 and 3 extending through the base to the vacuum chamber. It is also effective to use it in combination with a suction hole such as 45 in Figure 7.

Having described the invention in connection with a particular embodiment and particular application thereof, the invention as set forth in the appended claims. Various modifications will occur to those skilled in the art without departing from the spirit and scope of the invention as described herein. Dew.

The terms and expressions used in this specification are only descriptive terms and are not intended to be limiting. is not used as a term, and the use of such terms and expressions is , does not exclude any equivalents of the features shown and described or of any part thereof. There is no such thing. It is recognized that various modifications are possible within the scope of the claimed invention. .

FIG. 1 FIG. 1a FIG. 5 FIG.6 FIG. 7 FIO, 12 FIG.8 FIG.9 FIG, to FIG, I1 international search report

Claims (10)

[Claims] 1. In a housing for a type of vacuum sander that includes a backing pad, the A mounting has legs on the underside of said backing pad to space the board above the top side thereof. a relatively narrow peripheral opening between the plate having the member and the edge of the housing and the backing pad; a lip member around the housing defining an opening; A housing whose edges are contiguous or nearly so with the periphery of the lining pad. Gu. 2. The leg member is integral with the plate, and the lip member is connected to the lip and backing pad. Directed outward and downward from the board to define a narrow peripheral opening between the edges of the tube. A housing according to claim 1, comprising: 3. Claim 1 or 2 comprising an outlet from said plate for connection to a vacuum source. Depending on the housing. 4. The plate is circular and is attached to the top surface of a circular backing pad. Housing according to one of the preceding claims. 5. said plate is rectangular, and said lower plate is spaced from said plate by said leg member. a base member adapted to receive a backing pad on a lower surface thereof; and means on the plate member for connecting the housing to a vacuum source. Housing according to range 1. 6. The plate includes a tubular handle having a peripheral opening and an interior communicating with the chamber. housing according to one of the preceding claims. 7. a central opening in said plate having an upright flange for attachment to a vacuum source; a universal joint located in the opening and fixed to the base member at its lower end; The upper end of the joint is fixed to the handle member and the plate flange, and the upper end of the joint is fixed to the handle member and the plate flange, and A housing according to claims 1 and 5, which is connectable to a flexible collar surrounding the joint. Zing. 8. The backing pad has at least one circular concentric channel and a one of the preceding claims, wherein the channel aperture is provided with a channel extending therethrough; Housing by one. 9. The inside of the lip member is used to space the lip member from the surface of the backing pad. Housing according to one of the preceding claims, comprising a plurality of ribs. 10. Another lip member is added on top of the lip member and preferably has a rippled shape. Preferably, the lip member is spaced apart from the lip member by a projection. Housing by one of them.