DE2735542A1 - Brush with double ferrule sections - holds bristles in grooves in bundles - Google Patents

Abstract

The base of the brush, (8) at its holding tip (9) shows cross-section (10) of the ferrule (6). The base (8) has a number of evenly distributed separation channels (11). The base (8) has a circular appearing cross section and viewed axially has the appearance of a pinball, fastened by its smaller surface (9) to the handle (2). The ferrule (6) is attached to the handle (2) in a way to prevent the individual bristles from coming loose. Two ferrule sections (12, 13) are separated from each other. The ferrule section (13) facing the base (8) has at least one groove (14).

Description

paint brush

The invention relates to a brush, consisting of a handle, a A bundle of bristles and a partially enveloping it and securing it to the handle Clamp with locking cams onto which the handle can be locked with a thickened end, the thickened end with a tapered approach in the clamp engages and the approach has undercuts that loosen the cemented Bristles prevented. The production of the so-called brush head (bristles + ferrule) and the attachment of the handle to the brush head will in practice be very different Wise done. In the earlier usual and even today Frequently practiced manufacturing technology, the brush head consists of a flange with a central head, on the outer circumference of which the ferrule is attached.

First the bristles are cemented into the clamp, then In this case, the handle, which widens conically to form the brush head, is replaced by the central hole of the flange with its tapered end first inserted until it finally rests against the wall of the hole. With its thickened end is enough he then still over the face of the flange. Then putty is applied again indicated and the ferrule put on. This process is extremely time and material consuming.

Instead, it is already known today that the brush head in one prefabricate a one-time cementing process and then screw on the handle or to snap on. In this case, however, it is often a disadvantage that between the stem and the brush head only the form-fitting given by the thread or the locking cams There is a connection, but there is no connection between the stem and the cement bed. Another disadvantage is that the handle and brush head or ferrule are very close to one another must be coordinated. But now there are clamps with very different heights and also with different arrangements of the locking cams on the market, so that the Brush manufacturer must adapt the design of the brush head to these clamps or conversely, can only use a specific ferrule.

Starting from the favorable in terms of manufacturing technology Training the clamp with locking cams is the task of the invention zugrunge, one To create a brush handle, in connection with different high Forcing can be used.

According to the invention, this object is achieved in that the approach in the area of the attachment point a smaller one compared to the clear cross-section of the forcing and to the bristles increasing cross-section and that the approach with distance having mutually arranged separating grooves.

Due to the approach that expands towards the end, one is sufficient Undercut for the bristles and their cement bed created so that the The bristles cannot loosen. The length of the approach can easily vary tall ferrule can be adjusted by placing the neck only along one of the parting lines must be shortened, with a sufficient undercut always present is.

According to one embodiment of the invention, the approach has a circular shape Cross-section and in the axial direction the shape of a truncated cone, with his small area attaches to the stem. This embodiment is particularly for Ring brushes, which have a cylindrical cross-section, thought.

For flat brushes of any kind, the invention provides that the approach is rectangular and expands only in one axial plane, while it tapers in the axial plane perpendicular to it. By rejuvenating in one Insertion of the handle end into the clamp is made easier while in the other axial plane still sufficient undercut space is available to a to get the brush head firmly anchored on the handle.

According to the invention, the cams present on the clamp are locked into place between the thickened end of the stem and the approach at least one collar for the or arranged the locking cams of the clamp. When the handle is snapped onto the clamp their locking cams grip behind the collar.

Since the clamps of different heights generally also include the locking cams sit at different heights is provided according to a preferred embodiment, that two collars are arranged at a distance from one another, the one facing the approach Federal government has at least one recess.

Depending on the arrangement of the locking cams on the force, one or the other comes other covenant as a counterpart to the effect. The recess on the lower collar ensures so that the putty can penetrate into the space between the two collars, so that even with lower constraints, i.e. a correspondingly shortened approach, one more sufficient mediation takes place. This also provides additional anchoring of the stem reached in the cement bed.

The invention has the advantage that only that much kit mass is required as required for proper anchoring of the bristle and handle.

The invention is based on two shown in the drawing Embodiments described.

The drawing shows: FIG. 1 a handle for a ring brush in side view; FIG. 2 shows a flat brush in side view and FIG. 3 shows the in Flat brush shown in FIG. 2 in a view offset by 900.

In Figure 1, a ring brush 1 is shown, the handle 2 circular Has cross-section and widens towards the handle head 3. The stem instructs its other free end has a hole 4 to hang it up and in the area of its head 2 Recessed grips 5, which are regularly distributed over the circumference.

In addition, in FIG. 1 there is a clamp 6 of circular cross-section indicated, which together with the bristles, not shown, forms the brush head. The bristles are cemented into the clamp 6. The ferrule is near one of its faces provided with locking cams 7.

On the handle head 3, a projection 8 is formed, which is from his narrowest cross-section at 9 conically expanded to a largest cross-section 10. The approach 8 is provided with a plurality of separating grooves 11 so that it can be in different Height can be reduced. This means that it can be adapted to different heights of clamps 6 possible.

Between the approach 8 and the handle head 3 are reproduced when Embodiment two collars 12, 13 arranged at a distance one above the other. In the The undercut formed by the upper collar 12 engage the latching cams 7 of the Forces 6 in the assembled state of the brush. The second collar 13 or between him and the collar 12 existing annular gap comes into effect when a forcing 6 is used with locking cams whose distance from the upper face is greater than that of the locking cams 7.

The second collar 13 is on two opposite cleats with recesses 14, e.g. B. iii the form of incisions. Through these incisions 14 can the embodiment shown in Figure l, so in which the locking cams 7 behind the Upper collar 12 grab the Kittaasse in the Ringapalt between the two collars 12 and 13 penetrate. The collar 13 thus forms for the cement bed Another undercut, which improves the hold of the bristles, primarily at low constraints.

In Figures 2 and 3, a flat brush 20 is shown, the handle 21 has a rectangular cross-section. On the large surfaces 22 of the stem 21 In turn, a recessed grip 23 is formed and a through hole 24 on the one Provided at the end of the stem. On the handle head 25, which is only opposite in one plane the stem 21 is widened, a projection 26 is in turn formed.

The extension 26 has undercuts 27 in both axial planes (FIG 1) or 28 (Figure 3), into which the putty can penetrate. It rejuvenates However, overall the approach 26 from the handle head 25 bia to the front face 29. This taper makes it easier to insert the handle into the brush head, without, however, on the other hand, the necessary for a firm hold of the brush head There are no undercuts.

In this embodiment too, the extension 26 can be along the undercuts 28 has been shortened.

Between the handle head 25 and the extension 26 is in the embodiment shown a collar 30 is arranged, which has an annular undercut 31 for the locking cams a not shown ferrule forms.

Claims (5)

Claims 1. Brush, consisting of a handle, a bundle of bristles and ein.r the partially enveloping and securing on the handle with locking cams, on which the stem can be snapped with a thickened end, the thickened End with a tapered approach in the clamp engages and the approach Has undercuts that prevent the puttied bristles from loosening, characterized in that the attachment (8), (26) in the area of the attachment point (9, 27 one compared to the clear cross-section of the clamp (6) and smaller than the bristles towards increasing cross-section (10 29) and that the approach several at a distance having mutually arranged separating grooves (11 28). 2. Brush according to claim 1, characterized in that the extension (8) a circular cross-section and in the axial direction the shape of a truncated cone has, which attaches with its smaller surface (9) to the stem (2). 3. Brush according to claim 1 or 2, characterized in that the Approach (26) is rectangular and is only in one axial plane (Figure 2) extends at least over part of its length, while it is perpendicular to it Axial plane (Figure 3) tapers. 4. Brush according to one of claims 1 to 3, characterized in that that between the thickened end (3, 25) of the stem (29 21) and the approach (8, 26) at least one collar (12, 30) for the locking cam or cams (7) of the clamp (6) is. 5. Brush according to claim 4, characterized in that two bundles (12, 13) are arranged at a distance from each other and that the approach (8) facing Bund (13) has at least one recess (14).