DE3425440C2 - Broad brush - Google Patents

Abstract

A brush is equipped with a connecting part (1) - in particular made of plastic - arranged between the brush head (2) and the wooden handle (3), which is designed as a projection (6) on the brush head side and a recess (7) on the handle side for receiving the handle end (9) ) of the wooden handle (3). The projection (6) is pushed into the metal sleeve (4) of the brush head (2) and fastened there.

Description

characterized,

- That the projection (6) with the sleeve (4) and / or the rear end of the bristle bundle (5) through the adhesive poured into the sleeve (4) to secure the bristle bundle is glued and

- That on the connecting part (1) the recess (7) for the handle receptacle and the cavity (11) of the Projection (6) are separated from one another by a wall (12).

2. Brush according to claim 1, characterized in that the projection (6) with at least partially undercuts (8) filled with adhesive, for example with those penetrating the circumferential wall Openings is provided.

3. Brush according to claim 2, characterized in that the undercuts (8) adjacent to Brush head-side end edge of the projection (6) are arranged.

4. Brush according to one or more of the preceding claims, characterized in that the connecting part (1) with a circumferential flange protruding laterally beyond the foot of the projection (6) (10) for the attachment of the handle-side sleeve

tenkante (13) of the brush head (2) is provided.

5. Brush according to one or more of the preceding Claims, characterized in that the stem end (9) within the recess (7) nails, staples or the like penetrating through the surrounding edge from the outside is positively fixed

6. Brush according to one or more of the preceding claims, characterized in that the Surrounding wall of the recess (7) and the projection (6) of the connecting part (1) like the legs at an obtuse angle to each other.

Wide, flat brushes - called »Radiator Brush« known or how they are used for facade painting work - in their conventional way straight or kinked design a direct connection between brush head and wooden handle on. This firm connection is achieved by a long oval metal sleeve, which both the bundle of bristles in its practical target position, as well as the handle end of the milled to the width of the brush head Includes wooden handle

The production of a straight, wide brush is conventionally done in such a way that the bristle bundle pushed in from the handle side of the metal sleeve, pulled through to the said nominal position and cast there by an adhesive (for example two-component epoxy resin adhesive) from the side of the handle will. As a result, both the bristles in themselves and the bristle bundle with the metal sleeve permanently glued. This intermediate product is used for the final, conventional manufacture of straight brushes provided with a wooden handle, the brush head end of which is practically a negative of the internal cross-sectional shape corresponds to the cuff. This end is pushed into the cuff and mostly there mechanically fixed with staples or nails.

When not in use, the painter usually puts his brushes in water to prevent them from drying out. Included water penetrates into the space surrounded by the metal sleeve between the end of the handle on the brush head side and the rear end of the bristle bundle and collects there because it cannot evaporate. This penetrated Water is unsatisfactory in several ways: It increases the weight of the brush and therefore complicates its handling. In addition, it runs out of the annular gap when working Cuff and brush handle out again and along the brush handle in the hand and on the arm of the painter.

In addition, over time, the penetrated water leads to corrosion phenomena on the sheet steel manufactured cuff with the result that the cuff material rusts through over time and the Version of the bristle bundle is destroyed.

In a known from FR-PS 21 78 442 brush of the type mentioned, the connection between the metal sleeve holding the bundle of bristles and the brush head-side projection of the connecting part produced by a molded snap connection, in which Latching lugs formed on the outer circumference of the projection with groove-like openings in the wall engage with the metal collar. These wall breakthroughs in the metal sleeve impress

penetration of water into the cavity enclosed by the projection of the connecting part. This Water can also, through the parting line between the metal collar and the projection of the connecting part in penetrate the interior of the connecting part. aside from that the connecting part is designed as a continuous hollow body from the bristle side to the handle side, so that water penetrated into the cavity enclosed by the connecting part when working with the brush emerges towards the handle side and runs along the handle to the hand and arm of the painter and leads to contamination there

The invention is based on the object of providing a brush of the type mentioned at the beginning, which is previously known from FR-PS 21 78 442 Art to improve its manageability and durability. This task is carried out by the features contained in the characterizing part of claim 1 solved.

When assembling the brush, the connecting part is simply with its projection in the rear Introduced the cavity of the cuff with which the bundle of bristles was previously glued. The one in this rear cavity existing, not yet tied, over the rear end of the bristle bundle Any glue protruding largely automatically creates a liquid-tight bond between the projection of the connecting part and the sleeve. Through the bundle of bristles and through the parting line No more water or liquid can enter the cavity between the cuff and the projection penetration. From the handle-side end of the connecting part, the penetration of water is through the existing one Partition wall made impossible Should the sheet metal sleeve nevertheless corrode through at one point, a firm connection between the brush head and the connecting part is still due to the gluing guaranteed.

Due to the essentially form-fitting projection on the brush head side that engages in the metal collar End of the connecting part will be a better and more durable contact between the two parts than achieved with brushes of the conventional design, especially since the connecting part because of its material does not swell due to contact with water and can cling to the cuff wall. In order to a higher stability of the subject invention is achieved and the penetration of water is made considerably more difficult or prevented. The brush designed according to the invention is less sensitive to corrosion phenomena and more durable. Because the width of the recess of the connecting part intended to accommodate the handle is significantly smaller than the brush head width, the blank for the Handle production can be cut narrower at its end on the brush head side. By yourself with it The brush is also inexpensive due to the resulting material savings and the lower machining costs manufacturable.

The part of the connecting piece on the brush head side is designed as a projection which is essentially form-fitting is attached in the rear part of the cuff engaging on this. Through the identification feature of claim 2 described cavity is a material saving in the production of the connecting part achieved and created a certain elasticity that a tight fit favored on the cuff wall.

The characteristic of claim 3 avoids in a special way the described commodity! the cuff perforation. During production, glue can simply be put into the open side of the metal sleeve - For example, the well-known plastic adhesive for the bristle pack - poured and the brush head side Projection of the connecting part are introduced. Once the glue has hardened, it is permanent Connection between brush head and projection created. This watertight bonding particularly prevents effective water penetration and accumulation; the corrosion of the sheet metal sleeve is avoided. Should such a case occur anyway, there would be a fixed connection between the pinsei head and connecting part still guaranteed.

The undercuts in the undercuts described in claim 2 and partially penetrated by adhesive Projection of the connecting part - for example, the circumferential wall can be penetrated by openings - A particularly intimate contact is achieved between the parts to be bonded

The identification markers claim 3 is a solid, stable connection between the brush head and connecting part guaranteed even if little adhesive is used.

Durcö the one described in the characterizing feature of claim 4, over the foot of the projection protruding circumferential flange, the upper edge of the metal sleeve is covered. One possible risk of injury on this uft sharp edge is largely resolved. In addition, this further counteracts the risk of water seeping in.

Since, as described in the characterizing feature of claim 5, the handle as in the previous one Manufacture of brushes with nails, staples or the like, but is attached positively, can existing manufacturing devices continue to be used without complex, costly changes will.

The characterizing feature of claim 6 enables the use of one and the same brush heads or wooden handles for both straight and kinked wide brushes. The user can easily produce both designs by connecting parts, their projection and surrounding wall of the recess how straight or obtuse angles are to each other. The described economic disadvantages of the more complex, conventional production of bent brushes can thus be avoided.

The object of the invention is based on an embodiment shown in FIGS wide, flat pinsüs described. It shows

Fig. ■: a perspective overall view of the functional unit handle - connecting part - brush head in an exploded view,

F i g. 2 a longitudinal section through a straight brush (also in an exploded drawing),

3 shows a longitudinal section through a kinked one Brush (also in exploded view).

The connecting part 1, which is preferably made of a pressable, castable or injectable plastic, is in the prefabricated brush head 2 - consisting of a bundle of bristles 5 and metal sleeve 4 - inserted and fixed there with an adhesive (for example two-component epoxy resin adhesive). The Cavity 11 and the undercuts 8 not only require less material, but also a particularly intimate one and firm contact between metal sleeve 4,

Adhesive and projection 6 of the connecting part 1 reached. The upper edge 13 of the metal collar 4 is
covered by the circumferential flange 10.

In the F i g. 2 and 3, the recess 7 for receiving the handle end 9 of the wooden handle 3 can be seen. He is pushed in and there by means of nails, not shown, driven in the direction of arrow 14, staples or the like attached. Through the wall 12 lying between the recess 7 and the cavity 11, a Penetration of water into the brush head 2 from the handle side prevented.

The Fig.2 and 3 make it clear that for the production of straight or kinked brushes only connecting part 1 are provided in different designs needs.

1 sheet of drawings

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Claims (1)

Patent claims: - with a wide, flat brush head (2), - The one with its rear end in one in particular made of metallic The material ordering sleeve (4) consists of a bundle of bristles (5), - The bristle bundle (5) through into the rear cavity of the cuff (4) the introduced adhesive is glued to the sleeve (4) in a liquid-tight manner, - with a wooden handle (3), - the means of essentially positive engagement in the rear, not from the bristle bundle (5) filled part of the cuff (4) with the brush head (2) connected, and - With a material made of injection-molding, press-molding or casting, in particular a solvent-resistant one Plastic-made connecting part (1) arranged between the handle end (9) and brush head (2), the - On the handle side with one intended to receive the handle in an essentially form-fitting manner Recess (7) is provided, and - on the pin head side with a projection (6) essentially positively engaging in the rear part of the "cuff (4)" is attached to this, - The width of the recess (7) is less than the width of the interior the cuff (4), and - wherein the projection (6) by a self-contained, a brush head side the circumferential wall surrounding the open cavity (11) is formed,