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(11) | EP 0 535 391 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Orbital brushing and polishing machine |
(57) Orbital brushing and polishing machine with an interchangeable handle comprising:
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[0001] The object of this invention is an orbital brushing and polishing machine. This invention finds particular even if not exclusive application as a motored device for brushing, cleaning, washing and polishing surfaces as:
stairs, walls, wainscots, doors, lintels, colonnades, cornices, doorposts, wall to wall carpeting, armchairs and pavements.
[0002] In the prior art brushing machines or orbital polishers that brush or polish are generally used with specific functions or for brushing or polishing.
In particular, orbital polishers with interchangeable pads are known.
Generally, polishers and brushing machines are similarly of a rotary type, that however do not have an orbital movement and to compensate, utilize one or more brushes (generally three) disposed as in an isosceles triangle, or only one brush. The same are endowed with a jointed handle that permits the polisher to scroll on the floor.
Portable sanding polishers are also known that can be moved by hand, which are endowed with an orbital movement and include a pad that may be interchanged. These machines are usually used in professional sectors for industrial polishing of produced objects , but more particularly for sand papering varnished surfaces of wood objects for the respective finishing etc. Exists, therefore, a lack in the intermediate sector of a simple light weight apparatus which can be easily portable and can work with both a long handle on the floor and with a short handle for more various surfaces.
[0003] The aim of this invention is to obviate to the above-mentioned drawbacks and also, in particular, to allow the same apparatus to brush, clean, wash and polish surfaces.
[0004] This and other aims are reached with this innovation according to the characteristics of the following claims solving the exposed problems by means of an orbital brushing and polishing machine with an interchangeable handle, characterized in that it comprises:
- an electric motor ensemble with a vertical motor axis oriented downwardly, that ends with an eccentric and has a support fixed compared to the axis;
- said eccentric is pivoted in a freely rotating way, in a base to which is given a consequent vibrant orbital movement;
- this vibrant base is connected to said support which is fixed compared to the axis, by means of a flexible coupling;
- said base bears, by means of a spacer with an axial liquid distributor hole, an interchangeable brush or pad for washing, brushing or polishing surfaces.
- from this group, a short handle is orthogonally and laterally obtained which is the handgrip for the maneuver of the tool.
[0005] Advantageously, an interchangeable handle may be associated to the group so obtained, which has a fork-shaped end of which lower extremes can be pivoted in a contraposition on the horizontal axis for a free or fixed inclination.
[0006] With this solution we obtain a apparatus according to the established aims, simple, reliable and multifunctional that allows the washing, brushing and polishing of any surface., Multifunctional, inasmuch that we can work with different handles and we can use it also for hidden surfaces unlikely accessible to rotary brushes, as for example, angles.
[0007] These and other advantages are disclosed by the specified successive preferential solution description of realization with the help of the following drawings of which execution details not are to be considered imitative.
Figure 1 represents a perspective view of the brushing and polishing machine with a short handle to be used only as a polisher with pads.
Figure 2 represents a view of the brushing and polishing machine while
working with a long handle and also with a tank for liquids for washing functions.
Figure 3 represents a view of the three utilizable handles of the brushing and polishing machine.
Figure 4 represents an enlarged view of another version of the brushing and polishing machine according to invention in which the orthogonal fixed handgrip is realized in a different way, or directly obtained from the connection of the two cover casings.
Figure 5 represents a sectional view of the head of the support for the brushes or pads and the orbital rotatory motion transfer by means of an eccentric, and relative supply system of the liquid to the brush/pad.
[0008] Referring to the Figures, it is disclosed that the interchangeable handles are indicated with numbers 2, 3A, 2B.
They can be interchanged by means of the knobs 4 on the milling of coupling 43.
The short handle provides a sheath coating 1 and can dispose of a means of attachment 3, for example, for small tank.
The motor is arranged coaxially 22-23-44-19-20-15-17-16-24-10-13, and its switch is placed in an upward position 11-6, everything covered by the opposite protection covering 5-27-3-37-18-7-45-14-15.
[0009] Obviously, the switch may be placed also laterally being that its position doesn't effect the functioning of the invention.
Electricity is supplied by means of a flexible cable and an outlet plug 8-10-11-9.
The liquid sent to the brushes or pads by the distributor 115 of the brush or pad supporting plate 48, is supplied by means of the flexible tubes 30-29-28-27-26-25-33-32-31.
The brushes 42 are interchangeable with the pads 41 and we can provide a structure to cover the brushes 20.
The motor is advantageously endowed with a ventilator and transmission shaft 101 by plate 102, spacer 110 and counterweight 105, Everything is clamped by the clamping ring 111. and the movement is transmitted, by means of an eccentric and a respective spacer bearings 113, to a brush/pad holder which includes a clamping flange for bearings 112 that clamps the filtering and distribution plate with bolts 48-115 associated to the brush/pad holding plate 20, together to the dish-shaped base 116 that oscillates orbitally.
The upper plate fixed to the motor 102 is connected to the lower oscillating base 116 by a flexible coupling in rubber 37 clamped by metallic bands 36-34-35.
The holes 115 have an anti-spray function and can include an interchangeable filter.
The brush holder/pad holder plate group 20 together with that of distribution and filtration 48 and respective brushes or pads 41 42, are thus free to rotate in one orbital movement but they are not necessarily obliged to rotate.
The handle is conveniently shaped like an "U" over-turned and the respective ends are like that of a fork with opposite pivoting on the horizontal axis in the ensemble of the apparatus in order to supply a oscillating coupling with free inclination.
We can note that according to invention the short orthogonal handle is indicated with 101 and can, as said, be obtained by the connection of the two cover casings (fig.4) or by the structure and the same can support also the liquid distributor 29 (Fig.1).
The last handgrip may be advantageously also demountable (screwable handle).
1. Orbital brushing and polishing machine with an interchangeable handle characterized
in that it comprises:
- an electric motor ensemble (23) with a vertical motor axis (101) oriented downwardly, ending with an eccentric (1011) having a support fixed compared to the axis (102);
- said eccentric (1011) is pivoted in a free rotational way to a base (116) to which is given a consequent vibrant, orbital movement;
- this vibrating base (116) is connected to said support, fixed compared to the axis (102) by means of a flexible coupling (37);
- said base (116) supports, along with a liquid distributor, (29-115) an interchangeable brush or pad (41 - 42) for washing, brushing or polishing surfaces.
- a short handle is laterally and transversely realized from the group so obtained, which is the operative handgrip of the machine (101).
2. Orbital brushing and polishing machine, according to claim 1, characterized in that
said short transversal handle as a handgrip (101) is demountable and eventually interchangeable.
3. Orbital brushing and polishing machine according to claim 1, characterized in that
to the group so obtained is downwardly mounted an interchangeable handle with a fork-shaped
end of which lower extremes are pivoted in a contraposition on the horizontal axis
for a free or fixed inclination.
4. Orbital brushing and polishing machine, according to claim 3, characterized in that
said fork-shaped handle (2) includes a liquid distributor tank.
5. Orbital brushing and polishing machine, according to claim 3, characterized in that
said fork-shaped handle (2) includes a demountable liquid distributor tank.
6. Orbital brushing and polishing machine, according to claim 3, characterized in that
said handle (2) has a longitudinal handle prolongation that departs from the middle,
back part of the fork.
7. Orbital brushing and polishing machine, according to claim 3, characterized in that
said handle (2) has a longitudinal handle prolongation that departs from the middle,
back part of the fork;
- said handle prolongation includes a tank (20B) for the liquid supply (29) to said brush or pad (41 - 42).