EP3308671A2 - Broom - Google Patents

Abstract

So that a broom rests evenly and evenly on the ground during sweeping while sweeping, and does not begin to swing around a horizontal axis directed in the sweeping direction and begins to rock, the broom according to the invention has a broom head which, viewed in plan view, has a broom head viewed from the top of a front edge and / or has a rear edge, which are concave and / or convex shaped, preferably concave to the left of the center and convex right to the center, or vice versa, under certain circumstances, depending on the intended sweeping direction, ie sliding direction or pulling direction.

Description

I. Field of application

The invention relates to a broom comprising a bristle carrier body and a handle attached in its central region.

II. Technical background

In a broom, the phenomenon is known that with increasing width of the broom, so length of the bristle carrier body, with stiff bristles the broom with the bristles no longer evenly rests when sweeping on the ground, but vibrates around a running in the sweeping axis, due to the - depending on the irregularities of the ground and unevenly applied force of the user - once at the left and once at the right end of the bristle carrier body from the ground a higher or lower force against the bristle carrier body is applied, and thereby one of the ends is pushed up and at Movement in the sweeping direction can also lift off the ground.

As a result, only an insufficient sweeping result can be achieved in the outer regions of the width of the brush.

This problem can be solved by using either very soft, less rigid, bristles, but this is not possible depending on the particles to be swept, or reduces the width of the brush, which means an increased time for the sweeping of a certain area.

In order to avoid, among other things, this problem, but also other problems, there are already brooms whose bristle carrier body viewed in plan view, e.g. V-shaped or U-shaped, with opening to the front, so pointing in the sweeping direction. However, it has been shown that the problem is not really lower thereby, but only becomes smaller with respect to the length of the bristle carrier body, but not based on the sweeping width of the brush, which in relation to the length of the bristle carrier body with increasingly deep cavity of the V Shape or U-shape decreases.

In addition, the space required for storing such a broom is much greater than for a conventional broom with a straight bristle carrier body.

If a broom has very soft, so very elastic-elastic, bristles, the problem continues to occur, that in most cases a sweeping is possible only in the drawing direction, and less and less in the sliding direction, since when pushing the applied force of User is applied obliquely down on the broom, and thereby the bristles bend and brake hard on the ground, while pulling almost no force component is applied vertically down to the broom, except the weight of the being.

Another problem with almost all broom types is the sweeping of an edge between a horizontal and a vertical surface. This problem is greater, the shorter the bristles are and the less obliquely outward they protrude from the broom head or its base body.

III. Presentation of the invention a) Technical task

It is therefore the object of the invention to provide a broom that solves the above problems.

b) Solution of the task

This object is solved by the features of claims 1 and 23 . Advantageous embodiments will be apparent from the dependent claims.

• Zum einen neigt ein solcher Besen wesentlich weniger zu einem Aufschaukeln oder Hüpfen oder bereichsweise starkem Bremsen als ein in der Aufsicht betrachtet gerader, länglicher Besenkopf.

Characterized in that the bristle portion, as the bristle-equipped part of the broom head, viewed in plan view, both in the left and in the right area at least one curved or angled edge, so per area a curved leading edge or a curved trailing edge or both, different advantages are achieved:

• On the one hand, such a broom is much less likely to rock or bounce or partially strong brakes than a straight, long broom head viewed in the top view.

This is probably due to the fact that due to the curved shape considered in the sweeping effective depth of the broom head is larger and thus easier when sweeping the broom head is automatically guided so that the bristles are perpendicular to the ground or the bristle carrier body from which the bristles protrude is guided with its flat bottom parallel to the ground.

In this way, a broom can be used with a greater width and thus greater sweeping, without the hindering rocking or lifting off the ground in areas of the broom.

It has proved to be particularly advantageous if the front edge of the bristle area runs parallel to its trailing edge and thus, seen in the sweeping direction, the bristle area is everywhere the same width. This applies at least to the left region and / or the right region of the bristle region separately, preferably over the entire bristle region.

Preferably, in the case of a curved contour of the leading edge and / or trailing edge, it is part of a sine curve, in particular a 0 ° to 180 ° part or 180 ° to 360 ° part of a sine curve, so that a contiguous contour of a leading edge and a trailing edge is preferably one complete sine wave results.

Preferably, the shape of the left area is identical to the shape of the right area, and preferably left and right range from the respective outer end to the longitudinal center of the bristle area, in particular of the broom head.

In the case of a shoulderless, curved edge, the deflection should be between 2 % and 20 %, better still between 3 % and 12 %, better between 5 % and 10 %, better between 6 % and 9 % of the transversely measured width of this curved area, So with a cavity the depth of the cavity and with a convex edge the height of the convex deflection.

In absolute terms, this deflection of the convex shape or depth of the cavity should range between 0.3 cm and 4.0 cm, in particular between 0.5 cm and 2.5 cm, in particular between 1.0 cm and 2.0 cm As tests have shown, and amazingly, these absolute values are hardly dependent on the width of the curved contour.

When viewed from above, the point at which the curvature of the bristle area changes, viewed in the top view, is the center of the bristle area, especially in the case of a bristle area of equal width. The bristle area is thus point-symmetrical designed to the center, ie the intersection of the longitudinal direction of the sweeping direction with the viewed in the top view center line of the bristle area.

On the other hand, the individual curved contours, ie cavities or convex contours, are preferably formed laterally symmetrically to the longitudinal direction through their lowest or highest point, which has proved to be particularly advantageous in tests, or more curved in the outer region than to the middle of the bristle region out.

The bristle carrier body to which the bristles are attached, either over the entire width - ie extending in the transverse direction - be integrally formed, or consist of one or more separate left and right carrier body parts, which are then fixed directly or indirectly against each other. The bristle carrier body is preferably fastened to a head base body on which the attachment device for the stem is arranged, and preferably positively secured to this head base body.

The attachment device for the stem is preferably not a rigid attachment device, but designed as a joint, so that the attached to the one part of the joint stem relative to the attached to the other part of the joint bristle support body or in particular a head body adjustable: Preferably, an adjustability given in a longitudinally extending vertically vertical longitudinal plane, whereby the inclination of the stem can be adapted to the size of the user to each lead the bristles as perpendicular to the ground when sweeping or the flat bottom of the bristle support body as parallel to the ground respectively.

The attachment of the bristle-carrying body, which preferably consists of the same material as the bristles, preferably takes place in a form-fitting manner on the head base body by means of the inherent elasticity of the bristle-supporting body, considered in cross-section example, C-shaped and can be mounted on a matching contour of the head body.

Thus, for example, between the two mutually facing ends of the supporting body parts, the fastening device is arranged, on which the handle is attached. The two support body parts may be designed relative to one another or relative to the part arranged therebetween, such as the fastening device preferably pivotable about a vertical axis and in the respective desired pivot position also adjustable.

As a result, different adjustments can be made, which turns out to be expedient from the respective application, for example, type of substrate and type of particles to be recycled: Thus, the two support body parts at an angle to each other, so not aligned with respect to their main extension direction, or the two support body parts can be adjusted in alignment with each other with respect to their main directions of extension, but at an angle deviating from 90 ° to the sweeping direction.

Especially for the storage of the broom, it may also be advantageous that by means of the joint of the stem also in a transverse vertical plane, which is so beispielswese by the viewed in the direction of main extension direction of the broom head on the one hand and the stem on the other hand to pivot on the other hand , This allows the broom head to be pivoted up to a position parallel to the stem, which greatly reduces the space required for storage, especially in very wide broom.

The stem is preferably connected only at one point with the broom head, so that only a single such attachment device between broom head and stem is present, preferably in the longitudinal center of the broom head, ie symmetrically on the broom head.

However, it may be advantageous that the at least one stem is secured to the broom head via at least two transversely spaced locations, that is, there are two laterally spaced attachment devices, each of which may be configured as described above. Preferably, the two fastening devices are then arranged on the left and right of the longitudinal center and symmetrically to the latter on the broom head, in particular the head base body.

Either the handle is then a single handle, which however is fork-shaped with two prongs, at least in its front region, and each of the prongs is fixed with its free end to one of the fastening devices.

In particular, however, it may also be two stems, which are connected to each other in particular via a cross brace and thus may be designed for example U-shaped or a single stem is fork-shaped in its entire length. Then the connecting leg of the U-shape can also be used to guide the broom, so as a handle.

But it is also possible that in each of the two fastening devices a separate, in particular rod-shaped, handle is attached.

It has been found that for such a broom shape, the bristles should preferably have a relatively low flexural strength transverse to the skin extension direction of the bristles, preferably having a hardness between 50 shore and 70 shore, more preferably between 55 shore and 65 shore. For example, bristles made of a rubber-like material, in particular of synthetic rubber or natural rubber, are particularly well suited.

Such rubbery bristles may be integrally formed together with the bristle support body, for example by injection molding.

• Für die Zwecke der vorliegenden Anmeldung soll unter dem Querschnitt einer Borste auch ein Borstenbesatz mit einzelnen, im Querschnitt kleiner als 1 Millimeter betragenden, einen meist runden Querschnitt aufweisenden Borsten verstanden werden, der Besatz-Bereiche aufweist, die der beschriebenen Querschnittsform einer einzelnen, dickeren Borste mit einer Einbuchtung im Querschnitt entsprechen.

Since with such a broom - in contrast to other brooms with soft, rubbery bristles - should be swept in both sweeping directions, ie both in the sliding direction and in the drawing direction, the bristles should have a preferably matched cross-section to optimize the sweeping result:

• For the purposes of the present application, the cross section of a bristle should also be understood as a bristle set comprising individual bristles having a cross-section smaller than 1 millimeter and having a generally round cross-section which has trimming areas corresponding to the described cross-sectional shape of a single, thicker bristle correspond with a recess in the cross section.

Thus, the cross section of the bristles should have at least one pointing in the sliding direction and / or in the drawing direction of the broom indentation, at least in the lower end region, the intermediate angle between the flanks of the indentation - regardless of whether the contour is rounded or angular - preferably larger than 40 ° should preferably be 50 °, in particular even greater than 70 °, preferably greater than 90 °, but preferably not greater than 100 °.

If it is swept in such a direction that this indentation points in the instantaneous direction of sweeping, the particles to be collected collect in this indentation.

• entweder weist jede Borste einen Querschnitt mit einer sowohl in Schiebe-Richtung als auch in Zieh-Richtung weisenden Einbuchtung auf,
• oder der Querschnitt jeder Borste weist nur in eine der beiden Richtungen weisend eine solche Einbuchtung auf, und ist beispielsweise im Querschnitt schalenförmig oder V-förmig gestaltet.

However, since the broom is designed to be able to turn both in the direction of sliding and in the direction of pulling, different constellations can be provided:

• either each bristle has a cross-section with a recess pointing in both the sliding direction and the pulling direction,
• or the cross section of each bristle has only such an indentation pointing in one of the two directions, and is designed, for example, in the form of a cup or V-shaped in cross-section.

• entweder mit - bei einer Zickzacklinie - einer ungeraden Anzahl von Schenkeln, vorzugsweise von drei Schenkeln, oder mit entsprechend analoger Gestaltung einer Wellenlinie,
• oder mit einer geraden Anzahl von Schenkeln, z.B. einer W-Form.

The bristle cross section can also be designed as a corrugation line or zigzag line extending in the transverse direction of the broom head,

• either with - in a zigzag line - an odd number of legs, preferably of three legs, or with correspondingly analogous design of a wavy line,
• or with an even number of legs, eg a W-shape.

Then the bristles must be seen over the entire bristle area approximately half each with their indentation in the drawing direction on the one hand and in the sliding direction on the other.

For this purpose, transversely extending rows of bristles of one kind may cross-sectional orientation follow in the sweeping direction subsequent rows with the other bristle orientation, or in such a transverse cross-sectional orientation bristles of one and bristles of the other cross-sectional orientation can be arranged by each other, in particular alternately.

Nevertheless, it is useful to offset the bristles in the transverse direction from row to row, so that one bristle, viewed in the sweeping direction, is arranged before or after a gap between the bristles in the adjacent row.

With regard to the procedure when using a broom according to the invention, for a right-handed person with the broom, the concave trailing edge of the bristle area should be provided in the viewing direction of the user in the right area.

To not differently designed brooms for right-handed people on the one hand and left-handers on the other hand, the stem should be pivotable in the vertical longitudinal plane of a request from the broom head back to a request of the broom head forward.

c) embodiments

Fig. 1a, 1b:

Aufsichten auf Besen mit unterschiedlich geformten Besen köpfen,

Fig. 1c:

eine Frontansicht des Besens aus Fig. 1a, b ,

Fig. 1d:

einen Querschnitt des Besens aus Fig. 1a, b ,

Fig. 2a:

eine Aufsicht auf eine Abwandlung des Besens aus Fig. 1a ,

Fig. 2b:

eine Frontansicht des Besens aus Fig. 2a ,

Fig. 3a:

eine Aufsicht auf zwei Varianten eines gegenüber Fig. 1a abgewandelten Besens,

Fig. 3b:

die Frontansicht der beiden Varianten des Besens gemäß Fig. 3a ,

Fig. 4a:

eine Aufsicht auf einen gegenüber Fig. 1a abgewandelten Besen,

Fig. 4b:

eine Frontansicht des Besens gemäß Fig. 4a ,

Fig. 5a - 5h:

unterschiedliche Querschnittsformen von Borsten sowie deren Anordnungen am Borsten-Tragkörper,

Fig. 6:

eine Aufsicht auf eine weitere Form eines Besens.

Embodiments according to the invention are described in more detail below by way of example. Show it:

Fig. 1a, 1b:

Heads on brooms with differently shaped brooms heads,

Fig. 1c:

a front view of the broom Fig. 1a , b .

Fig. 1d:

a cross-section of the broom Fig. 1a, b .

Fig. 2a:

a view of a variation of the broom Fig. 1a .

Fig. 2b:

a front view of the broom Fig. 2a .

Fig. 3a:

a top view on two variants of one opposite Fig. 1a modified broom,

3b:

the front view of the two variants of the broom according to Fig. 3a .

Fig. 4a:

a view of one opposite Fig. 1a modified broom,

Fig. 4b:

a front view of the broom according to Fig. 4a .

5a-5h:

different cross-sectional shapes of bristles and their arrangements on the bristle carrier body,

Fig. 6:

a view of another form of a broom.

The FIGS. 1a and 1b show in the plan view from above each a broom head 2, which extends in the transverse direction 11 , being defined as the transverse direction 11 that direction in which viewed in the plan view of the broom head 2 has its greatest extent, so its main extension direction (2 ') , in particular its largest ingestible extension, which in the FIGS. 2a, b is important.

Lying in the horizontal plane Perpendicular to the transverse direction 11 is the reverse direction 10, whether the shift direction 10 a or the pulling direction 10 b, depending on whether the broom head 2 is pushed or pulled during sweeping by means of the stem. 1

Viewed in the supervision of the broom head has 2 - yes, according to the front view of the Fig. 1c a head base 8 , on which, preferably below, the bristle support body 3 is fixed - over the entire extent in the transverse direction 11, a preferably constant width.

This is for the supervisory presentations of FIGS. 1a and 1b It is assumed that the bristle area 4, as viewed in the top view, comprises bristles 7 on the bristle carrier body 3 , extends over approximately the same area as the head base body 8 and / or the bristle carrier body 3 in the plan view consider why their areas are assumed to be the same size for the purposes of the supervisory presentations.

In concrete terms, however, with regard to the design of the broom head 2 considered in the plan view, the design of the bristle area 4 is primarily concerned.

As well in Fig. 1a as well as in Fig. 1b has in the left area 11 a, with respect to the extension in the transverse direction 11 of the left half 11 a, the bristle area 4, the concave front edge 4 a and an analogous shaped, convex trailing edge 4 b, while in the right area 11 b, the right half 11 b of the bristle portion 4 is exactly reversed, ie a convex front edge 4 a and a particular analog shaped concave trailing edge. 4 b is present.

However, the shape of the leading edges and trailing edges is in Fig. 1a a curved line, which either has a uniform curvature and thus is a circular arc segment, or has a changing curvature and in particular represents a sine curve, which applies to both the continuous front edge 4 a and the continuous trailing edge 4 b.

Thus, viewed in the plan view, the bristle area 4 and / or the bristle carrier body 3 and / or the head base body 8 have the shape of a sinusoidal band or a band composed of two counter-arcuate circular arc segments.

The Fig. 1b differs in terms of the viewed in the top view bristle area 4 in that the leading edges 4 a and 4 b are no curved, but angled contours, so so the cavities 6 a in the left area of the front edge and 6 b in the right area of the trailing edge V-shaped contour, and also the corresponding opposite edges of the same area form an analogous convex contour.

In order to facilitate the visibility, while the depth 15 of the cavity 6 a - which in practice has a certain ratio to the width of the cavity 6 a, 6 b - which for the purposes of the present representations shown much larger than in the practical embodiment ,

In both cases, both in Fig. 1a as well as in Fig. 1b is in the middle of the extension in the transverse direction of the head base 8 on top of this head base 8 a broom handle 1 attached via a fastening device 5. The fastening device 5 is formed as a uniaxial joint, so that the stem 1 relative to the head base body 8 about a transverse axis 11 extending pivot axis 13 is pivotable and thereby depending on the size of the user optimal inclination of the stem 1 - as in the side view of Fig. 1d to recognize - can be adjusted.

In addition, either the stem 1 or the fastening device 5 can be pivotable about a vertical axis 12 or the course direction 12 'of the stem 1 .

How best the front view of the Fig. 1c shows, the bristles 7 are integrally formed together with the bristle support body 3 , which is fixed to the underside of the head base 8 . In this case, the bristle support body 3 in the transverse direction 11 in one piece over the entire extent of the head base body 8 extend -wie in the left half of Fig. 1c shown, or the bristle support body 3 may consist of several, in the transverse direction 11 adjoining, supporting body parts 3.1, 3.2, 3.3 , which are each attached separately to the head base body 8 .

This makes it possible, with one and the same type of support body parts 3.1, 3.2, 3.3, which are preferably each formed identically, to equip head base body 8 with different extension in the transverse direction 11 .

The design according to the FIGS. 2a, 2b is different from the one of Fig. 1 a . 1 c, 1 d in that the head base 8 itself consists of two body parts 8 a, 8 b, viewed in the transverse direction 11 with their mutually facing ends in the plan view closely adjoin one another, so that the mutually facing end portions of the two body parts 8 a, 8 b each with the mounting base 5 a of the fastening device 5 articulated about each vertical axis 12, in particular the vertical, are attached.

As a result, the left and the right main body part 8 a, 8 b can be set and adjusted to each other in an almost arbitrary angle in the plan view.

At the upper portion of the mounting base body 5 a turn the handle 1 is then pivotable about a horizontal lying, preferably in the transverse direction 11 extending transverse axis 13 .

The design of the Fig. 3a . 3b is different from the one of FIGS. 1 a . 1 c, 1 d characterized in that each attachment device 5 is fixed to the head base member 8 instead of a central fastening device in its respective end region in the transverse direction 11 is provided for movably securing the free end of a shaft 1, and in particular pivotable about an axis extending in the transverse direction 11 of the pivot axis. 13

As in the right half of the picture FIGS. 3a . 3b shown, it can be an arcuate, in particular U-shaped, handle 1 with two free ends, which are spaced so that they can be fixed in each case in one of the fastening devices 5 .

In contrast, the left half shows the FIGS. 3a . 3b a stem which forks in the front region and in each case one of the free ends of one of the prongs of this fork in each case one of the fastening devices 5 movably secured, preferably pivotable about a particular lying in the transverse direction 13 pivot axis can be.

The user thus grips the central rear portion of the stem 1 as well as a stem, as in the FIGS. 1a, 1b is shown, and can thereby apply only small torsional forces about the extension direction 12 'of the stem 1 .

The FIGS. 4a, 4b show a broom head consisting of two pivotable relative to each other about a vertical axis 12 main body parts 8 a, 8 b as in the design according to the FIGS. 2 a, 2 b and with appropriate, viewed in the supervision, shaping the entire broom head.

However, in Fig. 4a, 4b - Instead of a single central fastening device - on the main body parts 8 a, 8 b each have a fastening device 5 for the end of a stem 1 or two separate stems 1 , respectively at the transverse direction 11 outwardly facing end portion of each of the two main body Parts 8 a, 8 b.

The two main body parts 8 a, 8 b can be directly connected to each other articulated about a vertical axis 12 or - as shown - via a connecting part 14 to which each of the base body parts 8 a, 8 b is attached to a separate vertical axis 12 swivel ,

The latter also allows a compensation of the pivoting about these vertical axes 12 changing distance of the two fastening devices 5 in the transverse direction 11, and if this is not sufficient, the fastening devices 5 can also be arranged in the transverse direction 11 movable to the respective body parts 8 a, 8 b be.

• Dabei ist die Befestigungsvorrichtung 5 für den Stiel 1 wiederum in der Mitte der in Querrichtung 11 verlaufenden Haupt-Erstreckung des Besenkopfes 2 angeordnet, jedoch besitzt der Borstenbereich 4 und/oder der Borsten-Tragkörper 3 und/oder der Kopf-Grundkörper 8 im einen, vorzugsweise im linken, Bereich 11a in der Aufsicht betrachtet eine Linsenform, besitzt also sowohl eine konvex nach vorne gebogene Vorderkante 4a als auch eine konvex nach hinten vorstehende Hinterkante 4b, die insbesondere identisch geformt sein können.

Fig. 6 shows in the plan view a special form of a broom head 2:

• The fastening device 5 for the stem 1 is again arranged in the middle of the main extension of the broom head 2 extending in the transverse direction 11 , but the bristle region 4 and / or the bristle carrier body 3 and / or the head base body 8 have in one, Preferably in the left, area 11 a in the plan view considered a lens shape, so has both a convex forward curved front edge 4 a and a convex rearwardly projecting trailing edge 4 b, which may be formed in particular identical.

In contrast, in the other, preferably in the right-hand, area 11 b viewed in plan view, both the front edge 4 a and the trailing edge 4 b are concave-shaped, in particular identically concave.

Seen in the top view, an opening in the form of an also lenticular inner contour can also be present in the middle of the region with the convex front edge and trailing edge-in particular centric to this lenticular outer contour.

However, such a form of Besenkopfes in the supervision is usually used only for special tasks.

• In allen Figuren 5a bis 5h ist die Querrichtung der Darstellung gleichzeitig die Querrichtung 11 des entsprechenden Besenkopfes 2.

The FIGS. 5a to 5h show different arrangements and cross-sections of bristles 7 within a bristle-supporting body 3, which is not shown in these figures, but which determines by the attachment of the bristles 7 on the bristle-supporting body 3 their positioning to each other, in the view from below:

• In all FIGS. 5a to 5h the transverse direction of the representation is at the same time the transverse direction 11 of the corresponding broom head 2.

In all FIGS. 5a to 5h the cross-sections of the individual bristles 7 are shown with a thickness that is constant in the course of this cross-section, but this is not absolutely necessary for the purposes of the present invention.

In Fig. 5a, c, e . G the cross sections of the bristles 7 are V-shaped, so that the two legs 14 of this V-shape meet at an acute intermediate angle 15 , which is preferably between 40 and 110 °.

In Fig. 5a and 5c the bristles 5 are arranged in the sweeping direction 10 rows arranged one behind the other, and in Fig. 5a within the rows next to each other alternately the V-shaped cross sections of the bristles 7 once arranged with the indentation 9 forward and once with the indentation 9 to the rear.

The bristles 7 of the successive rows in the sweeping direction 10 are offset from one row to the next, so that a bristle 7 with its longitudinal center 7 ' always in the sweeping direction 10 is aligned with the gap of two adjacent bristles 7 in an adjacent row.

The latter also applies to the arrangement of Fig. 5c However, where there are within a row all bristles 7 with their indentation 9 in the same direction, row by row, however, in alternate directions.

The FIGS. 5b, 5d show the same arrangement of the bristles 7 as the figures 5 a, 5 c, but with a cross-sectional shape of the individual bristles 7, which is not V-shaped, but arcuate or cup-shaped. Tangents applied to the ends of the shell mold have an intermediate angle 16, which is preferably between 40 and 110 °.

Fig. 5e shows a shape of the bristle cross-section, the on the V-shape of FIGS. 5 a, 5 c In addition, a third leg 14 , and all of the three adjoining legs are at an angle 15 to each other, so that each bristle 7 has a forward facing recess 9 and adjacent spaced a second, rearwardly facing indentation 9 .

In each of the rows, the bristles 7 are identically formed and arranged identically. Again, from one row to the next, the bristles 7 are each arranged in gap to the adjacent row.

The same applies to the design and arrangement of Fig. 5f In which zigzag-shaped instead of three legs present a bristle cross section in the form of a full sine wave, or from two adjacent circular arc segments, and thus also in each bristle both 7 a forward facing as well as a rear facing indentation 9 is present.

Fig. 5g shows bristles 7, whose cross-section is W-shaped, ie from two adjoining interconnected V-cross sections according to Fig. 5 a, so that then a total of four legs 14 form a zigzag line, each with equal angles 15 between the adjacent legs 14th

In the left half of the picture Fig. 5g these bristles 7 are each arranged in an identical position next to each other, and in all rows with the same arrangement of the cross sections of the bristles with respect to the direction of their central unilateral indentation 9 in the same direction, be it forward or backward.

In the right half of the picture Fig. 5g the bristles of a row are arranged with the central indentation 9 in one direction and the bristles of the next adjacent row with alignment of the central indentation 9 in the other direction.

In both cases, the bristles 7 are offset from each other in the transverse direction 11 from row to row such that one bristle 7 is aligned with the gap between two adjacent bristles 7 of the next adjacent row.

The same applies analogously to the representation of Fig. 5h with the difference that there the bristles 7 no zigzag-shaped, so W-shaped, but have a wavy-shaped cross-section, in turn with a central indentation in cross-section, which has in one direction and two adjacent thereto further outward indentations, which point in the other direction of sweeping 10 .

The cross section of each of these bristles 7 thus consists of three merging into each other circle segments or 1.5 sine waves.

LIST OF REFERENCE NUMBERS

1

Stem, broomstick

2

broom head

2 '

Main direction

3

Bristle support member

3.1 / 2

Supporting body part

4

bristle area

4 a

leading edge

4 b

trailing edge

5

fastening device

5 a

Securing base

6 a, b

cavity

7

bristle

7 '

longitudinal center

8th

Head body

8 a, b

Basic body portion

9

indentation

10

return direction

10 a

Sliding direction

10 b

Drawing direction

10 '

transverse center

11

transversely

11 a

left area, left half

11 b

right area, right half

12

vertical axis

12 '

Course of the stem

13

Swivel axis, transverse axis

14

leg

15

intermediate angle

16

intermediate angle

100

user

Claims (16)

Broom with a stalk (1), - An elongated broom head (2) viewed in plan view with a main extension direction (2 ') which is connected by means of at least one fastening device (5) with the handle (1) , wherein the broom head (2) has bristles (7 ) in a bristle area (4) considered in the plan view, which project downwards from a bristle support body (3) of the broom head (2) ,
characterized in that
the bristle area (4) - In the left area ( 11 a) of the main extension direction (2 '), the trailing edge ( 4 b)
and or - In the right area ( 11 b) of the main extension direction (2 '), the leading edge ( 4 a)
has a convex, curved or angled shape
or the other way around. A broom according to claim 1,
characterized in that
in the same, left or right, area ( 11 a or b) viewed in the top view in the case of a convex, curved or angled, trailing edge ( 4 b) the front edge ( 4 a) is concave, curved or angled,
and or - in a concave, curved or angled, trailing edge ( 4 b), the front edge ( 4 a) is convex, curved or angled, Broom according to one of the preceding claims,
characterized in that the concave edge ( 4 a or 4 b) has the analog, in particular identical, shape as the convex edge ( 4 b or 4 a), in particular in the same, left or right, region ( 11 a or b),
and or - The trailing edge ( 4 b) and / or front edge ( 4 a) angled or preferably without offset swinging. Broom according to one of the preceding claims,
characterized in that - The contour of the leading edge ( 4 a) of the one area ( 11 a) and the adjoining contour of the trailing edge ( 4 b) of the other area ( 11 b) together form a sine curve,
and or - In the bristle region (4), the front edge ( 4 a) and the trailing edge ( 4 b) parallel to each other, in particular everywhere parallel to each other. Broom according to one of the preceding claims,
characterized in that
in the plan view of the bristle support body (3) and / or the Besenkopf (2) at least in terms of the design of the leading edge ( 3 a) and trailing edge ( 3 b) the analogous shape as leading edge ( 4 a) and / or trailing edge ( 4 p) of the bristle region (4) , in particular has the identical shape. Broom according to one of the preceding claims,
characterized in that - The depth (15) of the cavity ( 6 a, b) between 2 % and 20 %, in particular between 3 % and 12 %, in particular between 5 % and 10 %, in particular between 6 % and 9 % of the width of the cavity ( 6 a, b) is,
and or - The depth (15) of the cavity ( 6 a, b) between 0.3 cm and 4.0 cm, in particular between 0.5 cm and 2.5 cm, in particular between 1.0 cm and 2.0 cm , Broom according to one of the preceding claims,
characterized in that - Either the cavity ( 6 a, b) is formed side symmetrical to the extending through its lowest point longitudinal direction (10) - Or the cavity ( 6 a, b) in the outer region of the bristle portion (4) is more curved than the center of the bristle portion (4) back. Broom according to one of the preceding claims,
characterized in that
the bristle support body (3) - attached to a head base body (8) , in particular fixed in a form-fitting manner,
and particularly - Is formed integrally either in the transverse direction (11) over the entire width - Or from a separate left and right support body part (3.1, 3.2) , which are fixed directly or indirectly, in particular with interposed fastening device (5) against each other, in particular pivotable about a vertical axis (12) against each other and pivoted. Broom according to one of the preceding claims,
characterized in that
the fastening device (5) is a fastening joint, which is designed such that it allows a pivoting in a vertical longitudinal plane (10 ") and / or in a vertical transverse plane (11") and or in all vertical planes and in particular an adjustment in different, in particular in all, pivot positions. Broom according to one of the preceding claims,
characterized in that
two fastening devices (5) on the left and right of the transverse center (10 ') of the broom head (2) on the broom head (2) are present,
in particular - Either the only handle (1), at least in its front end portion, fork-shaped with two front free ends is formed, each with one of the fastening devices ( 5 a, b) are connected - Or the broom two stems ( 1 a, b), which are each connected to one of the fastening devices ( 5 a, b) and are preferably interconnected via a transverse strut. Broom according to one of the preceding claims,
characterized in that
the bristles (7) consist of a rubber-like material, in particular of rubber, and in particular together with the bristle-supporting body (3) in one piece, in particular by injection molding, are produced. Broom according to one of the preceding claims,
characterized in that the bristles (7) have a hardness of between 50 shore and 70 shore, better between 55 shore and 65 shore,
and or - The cross section of the bristles (7) facing either in the forward sliding direction ( 10 a) leading edge ( 7 a) or in the rearward pulling direction ( 10 b) facing the trailing edge ( 7 b) a recess ( 9), in particular an angled indentation (9), whose intermediate angle is in particular greater than 50 °, in particular greater than 70 °, in particular greater than 90 °, but is preferably less than 100 °. Broom according to one of the preceding claims,
characterized in that - in the bristle area (4) both bristles (7) are provided with forward and backward facing indentation (9) , in particular approximately the same number are present,
and or - The bristle-supporting body (3) by means of its inherent elasticity on the head base body (8) is held positively fit. Broom according to one of the preceding claims,
characterized in that
the bristles (7) are arranged alternately with indentations (9) pointing in different directions - either in the transverse direction (11) side by side alternately - or in each case in the sweeping direction (10) successive rows, then in particular offset so that the bristles (7) of the one row are positioned in the gaps between the bristles (7) of the preceding or succeeding row. Broom according to one of the preceding claims,
characterized in that - Either the cross section of the individual bristles (7) both a forward and a rear facing indentation (9) , and in particular the cross section has the shape of a zigzag line with an odd number of legs, in particular with three legs - Or the cross section of the individual bristles (7) is W-shaped and has four legs. Method for using a broom according to one of the preceding claims,
characterized in that
for a right-handed user (100) of the broom the concave trailing edge ( 4 b) of the bristle portion ( 4) in the right area ( 11 b) of the bristle carrier body (3) is provided.

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