EP0078358A2 - Broom handle attachment - Google Patents

Broom handle attachment Download PDF

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Publication number
EP0078358A2
EP0078358A2 EP82100510A EP82100510A EP0078358A2 EP 0078358 A2 EP0078358 A2 EP 0078358A2 EP 82100510 A EP82100510 A EP 82100510A EP 82100510 A EP82100510 A EP 82100510A EP 0078358 A2 EP0078358 A2 EP 0078358A2
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EP
European Patent Office
Prior art keywords
handle attachment
recess
pin
profile
handle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82100510A
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German (de)
French (fr)
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EP0078358B1 (en
EP0078358A3 (en
Inventor
Helmut Dr. Schlüter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Freudenberg KG
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Carl Freudenberg KG
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Publication date
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to AT82100510T priority Critical patent/ATE16467T1/en
Publication of EP0078358A2 publication Critical patent/EP0078358A2/en
Publication of EP0078358A3 publication Critical patent/EP0078358A3/en
Application granted granted Critical
Publication of EP0078358B1 publication Critical patent/EP0078358B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings
    • B25G3/12—Locking and securing devices
    • B25G3/18—Locking and securing devices comprising catches or pawls

Definitions

  • the invention relates to a handle attachment for a broom, consisting of a broom body with a recess extending parallel to the handle, into which an adapted pin connected to the handle can be inserted, which has a recess, a stop and a spring-loaded by hand operation in the recess Has projection, which is associated with a holding edge of the broom body.
  • a handle attachment of this type is known from DE-AS 29 06 154.
  • the pin has a polygonal profile and is tapered in the projecting part in order to ensure secure anchoring of the broom.
  • the broom body is made of a thermoplastic and is obtained by injection molding.
  • the most recent thermoplastically processable plastics depending on the conditions in the environment, tend to absorb or release moisture, which can adversely affect the dimensional accuracy. For this reason, it has already been proposed to cover the stop surface with a layer of a soft, elastic material. This does not affect the basic problem. Appropriate materials also tend to accumulate dirt, which is why a corresponding design is objectionable both in terms of hygiene and aesthetics.
  • the invention has for its object to develop a handle attachment made of a thermoplastic plastic for a broom, which overcomes such difficulties and which is especially reliable in the presence of dimensional deviations of the individual parts from the ideal size.
  • the pin consists of a strip with a U-profile, which has a substantially constant wall thickness, that the individual legs of the profile merge into each other rounded and are each arched inwards and that the dimensioning of the wall thickness and the adaptation of the U-profile to the profile of the recess is made so that the two side legs along their upper and the middle legs in the region of symmetry Axis resiliently rest on the inner wall of the recess, which is otherwise spaced apart.
  • the handle attachment can be made from all relevant thermoplastic materials, but it is necessary to take into account the mechanical, thermal and chemical properties with regard to the dimensions and the intended application. Due to the low water absorption capacity, the use of polyolefinic materials for the household sector has proven particularly effective. In contrast, the use of POM, PETP, PA has proven to be cheaper in the area of industrial applications, where a higher exposure to organic solvents is to be feared.
  • the forces are transmitted to the handle via the resilient legs of the U-shaped profile bearing against the inner wall of the recess.
  • the legs are thus able to compensate for deviations from the ideal size, and dimensional changes that are difficult to control due to shrinkage or swelling are therefore of no importance.
  • a prerequisite for this elastic contact pressure is the contact between each leg and the associated inner wall of the recess, which is limited to a single point with respect to a profile cut.
  • the legs are able to compensate for irregularities in the intermediate zones, with a balanced, specific cross-sectional load resulting at the same time as a result of the uniformly merging curvatures in the individual areas. For this reason, stress cracks in the area of the transition zones between the individual legs are not to be feared.
  • the mutual distance between the three load application points obtained in a profile section can be achieved with force that is neutral in direction introduction must be balanced and fully correspond to each other.
  • a common household broom which has a greater extension in the transverse direction than in the longitudinal direction, it has proven to be more advantageous, however, if the distance between the load application points of the two side legs is greater than the distance of these load application points from that of the central leg .
  • the ratio between the two distances in a household broom should be 1.1 to 2.5, preferably 1.4.
  • the pin and the recess extend essentially parallel to the stem, which is why the mutual contact is not limited to the three loading points mentioned, but to continuous lines corresponding to the load-bearing length of the pin. Compared to the actual length to be measured up to the stop, this is reduced by a free dimension which is necessary to ensure the required spring elasticity.
  • the cross section of the pin is either reduced to such an extent and / or the cross section of the cutout is expanded to such an extent that mutual contact is excluded.
  • the latter embodiment is preferred insofar as the pin has a reduced, load-bearing cross-section in the area mentioned, compared to the broom body.
  • the pin is tapered conically in the projecting part, with the recess being correspondingly adapted.
  • the degree of the tapered taper need only be slight and can be, for example, 1 to 4 °. A corresponding variation has no fundamental influence on the functional principle mentioned.
  • the ratio of the greatest width and the greatest height of the U-shaped pin should be 1.1 to 2.1, preferably 1.6. Within the mentioned range, minimal dimensions, i.e. optimal use of materials optimal stability with respect to the requirements of anchoring a broom, which has a greater transverse than longitudinal extent achieved.
  • the ratio of the width A and the depth B of the arching of the legs should be 4.5 to 7, preferably 5.5.
  • balanced tensions result, based on the total cross section of the pin, which consists of a U-shaped strip, i.e. a particularly high level of security against the occurrence of stress cracks when inserted into the recess of the broom body.
  • Dimension B is defined as the absolute dimension of the arch, dimension A, however, as the mutual distance between the most outwardly projecting points of each leg.
  • the ratio of the greatest length of the guide pin and the greatest width can be 1.5 to 3, preferably 2.0. It makes reference to ensuring a particularly wobble-proof connection between the handle and the actual broom body with easy handling. Both features adversely affect each other, which is why the proposed area is a particularly favorable compromise.
  • the notable advantages of the proposed handle attachment are particularly good functional reliability, ie above all the guarantee of a shake-proof connection between the handle and the broom body that is largely independent of signs of wear, swelling, shrinkage and inaccuracies of the individual parts.
  • the handle attachment can be produced inexpensively, and is characterized by a particularly low weight and high durability. For this reason, it is not only ideal for brooms, but also for connecting other tools with a handle.
  • the handle attachment 1 according to FIG. 1 consists of a thermoplastic, namely POM, PETP, PA. It is available using an injection molding process.
  • the handle attachment has a cylindrical extension 14, onto which the handle 3 consisting of a thin-walled aluminum tube / iron tube is attached.
  • the front edge of the handle is covered by a circumferential projection 13 of the handle attachment.
  • the pin 6 extends in the lower region, essentially parallel to the extension of the handle.
  • This pin is tapered uniformly both overall and in terms of its wall thickness in the projecting part, and in this way is particularly easy to manufacture and into the recess 4 of the broom body 2 insertable.
  • the pin has a U-shaped opening 5 towards the right side, into which, starting from the stop 7, the spring tongue 15 protrudes with the projection 8 attached to it. This is chamfered on the front edge, and thereby escapes into the recess 5 when the pin 6 is inserted into the recess 4. To subsequently loosen the handle attachment, it is only necessary to press the projection 8 into the recess 5 with the thumb and to pull the two parts apart in the direction of the broom handle. The holding edge 9 is released in this way.
  • the recess 4 is widened in the region of the mouth to a free space surrounding the pin, in which the two parts have no mutual contact.
  • the free space serves to ensure sufficient mobility of the individual legs of the pin 6 in the transverse direction.
  • Figure 2 serves to illustrate the geomstrical situation in a plane along the section line A: A of the assembled parts according to FIG.
  • the cross section of the recess 4 of the broom body 2 is approximately matched to that of the pin, but encloses the latter at a distance with the exception of the load application points C.
  • the individual legs 10, 11, 12 of the pin are able to move freely in the spaces between the load application points C and to compensate for dimensional deviations in this way.
  • the load application points clarify the position of the lines of contact extending parallel to the handle and thus perpendicular to the plane of the drawing between the pin and the recess of the broom body.
  • the force transmission in the area of the contact lines takes place depending on the actual load in terms of direction approximately in the sense of the vectors drawn in FIG. 2, ie in accordance with the conditions of a statically stable triangle of forces. Stress In this respect, types of broom bodies that are likely to wobble cannot occur.
  • the size of the curvature of the legs 10, 11, 12 of the profile of the pin 6 is defined by the dimensions A and B.
  • the dimension A denotes the distance between the most protruding points
  • the dimension B the vertically measured distance of a point on the same surface that protrudes the furthest, both measured in unloaded condition.

Abstract

1. A handle attachment for a broom, comprising a broom body (2) having a hollow (4) which extends parallel to the handle (3) and into which can be inserted an adapted pin (6) which is connected with the handle, said pin (6) having a recess (5), a stop (7) and a protrusion (8) which can spring into the recess by manual operation, a retaining edge (9) of the broom body (2) being allocated to the protrusion (8), characterised in that the pin (6) is made of a strip having a U section which has an essentially uniform wall thickness, that the individual legs of the U section merge into one another in a dished manner and are each arched inwards, and that the wall thickness is dimensioned and the U section is adapted to the section of the hollow (4) in such a way that the two lateral legs (10, 11), along their upper ends, and the centre leg (12), in the area of the symmetrical axis, sit in a spring-like manner against the inner wall of the hollow (4), which inner wall otherwise has a space.

Description

Die Erfindung betrifft eine Stielbefestigung für einen Besen, bestehend aus einem Besenkörper mit einer sich parallel zu dem Stiel erstreckenden Aussparung, in die ein angepaßter, mit dem Stiel verbundener Zapfen einsteckbar ist, der eine Ausnehmung, einen Anschlag sowie einen durch Handbetätigung in die Ausnehmung einfederbaren Vorsprung aufweist, dem eine Haltekante des Besenkörpers zugeordnet ist.The invention relates to a handle attachment for a broom, consisting of a broom body with a recess extending parallel to the handle, into which an adapted pin connected to the handle can be inserted, which has a recess, a stop and a spring-loaded by hand operation in the recess Has projection, which is associated with a holding edge of the broom body.

Eine Stielbefestigung dieser Art ist aus DE-AS 29 06 154 bekannt. Der Zapfen weist ein polygonförmiges Profil auf und ist im vorspringenden Teil kegelig verjüngt, um eine sichere Verankerung des Besens zu gewährleisten. Er besteht ebenso wie der Besenkörper aus einem thermoplastischen Kunststoff und wird durch Spritzgießen erhalten. Dabei ergeben sich allerdings aus der in Abhängigkeit von den unterschiedlichen Querschnitten des Zapfens und der Aussparung in den verschiedenen Bereichen unterschiedlicher Schrumpfung Schwierigkeiten, eine wackelsichere Verbindung zwischen beiden Teilen zu realisieren. Weiterhin ist zu berücksichtigen, daß die neisten thermoplastisch verarbeitbaren Kunststoffe in Abhängigkeit von den Bedingungen der Umgebung dazu neigen, Feuchtigkeit aufzunehmen bzw. abzugeben, wodurch die Maßhaltigkeit nachteilig beeinflußt werden kann. Man hat aus diesem Grunde bereits vorgeschlagen, die Anschlagfläche mit einer Schicht aus einem weichelastischen Werkstoff zu belegen. Die grundsätzliche Problematik wird hierdurch nicht berührt. Entsprechende Werkstoffe neigen außerdem dazu, Schmutz anzulagern, weshalb eine entsprechende Ausführung sowohl in hygienischer als auch in ästhetischer Hinsicht zu beanstanden ist.A handle attachment of this type is known from DE-AS 29 06 154. The pin has a polygonal profile and is tapered in the projecting part in order to ensure secure anchoring of the broom. Like the broom body, it is made of a thermoplastic and is obtained by injection molding. However, depending on the different cross sections of the pin and the recess in the different areas of different shrinkage, difficulties arise in realizing a wobble-proof connection between the two parts. It should also be taken into account that the most recent thermoplastically processable plastics, depending on the conditions in the environment, tend to absorb or release moisture, which can adversely affect the dimensional accuracy. For this reason, it has already been proposed to cover the stop surface with a layer of a soft, elastic material. This does not affect the basic problem. Appropriate materials also tend to accumulate dirt, which is why a corresponding design is objectionable both in terms of hygiene and aesthetics.

Der Erfindung liegt die Aufgabe zugrunde, eine Stielbefestigung aus einem thermoplastischen Kunststoff für einen Besen zu entwickeln, die solche Schwierigkeiten überwindet und die insbesondere beim Vorliegen maßlicher Abweichungen der einzelnen Teile vom Idealmaß wackel- und funktionssicher ist.The invention has for its object to develop a handle attachment made of a thermoplastic plastic for a broom, which overcomes such difficulties and which is especially reliable in the presence of dimensional deviations of the individual parts from the ideal size.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Zapfen aus einem Streifen mit einem U-Profil besteht, der eine im wesentlichen gleichbleibende Wandstärke aufweist, daß die einzelnen Schenkel des Profils abgerundet ineinander übergehen und in sich jeweils einwärts durchgewölbt sind und daß die Bemessung der Wandstärke und die Anpassung des U-Profils an das Profil der Aussparung so vorgenommen sind, daß die beiden seitlichen Schenkel entlang ihrer oberen und der mittlere Schenkel im Bereich der Symmetrieachse federnd an der im übrigen einen Abstand aufweisenden Innenwandung der Aussparung anliegen.This object is achieved in that the pin consists of a strip with a U-profile, which has a substantially constant wall thickness, that the individual legs of the profile merge into each other rounded and are each arched inwards and that the dimensioning of the wall thickness and the adaptation of the U-profile to the profile of the recess is made so that the two side legs along their upper and the middle legs in the region of symmetry Axis resiliently rest on the inner wall of the recess, which is otherwise spaced apart.

Die Stielbefestigung läßt sich aus allen einschlägig angewendeten thermoplastischen Werkstoffen herstellen, wobei jedoch eine Berücksichtigung der mechanischen, der thermischen und der chemischen Eigenschaften in bezug auf die Dimensionierung und den vorgesehenen Anwendungsfall erforderlich ist. Wegen der geringen Wasseraufnahmefähigkeit hat sich insbesondere die Verwendung polyolefinischer Werkstoffe für den Haushaltsbereich ausgezeichnet bewährt. Für den Bereich industrieller Anwendungen, wo eine stärkere Beaufschlagung mit organischen Lösungsmitteln zu befürchten ist, hat sich hingegen die Verwendung von POM, PETP, PA als günstiger enriesen.The handle attachment can be made from all relevant thermoplastic materials, but it is necessary to take into account the mechanical, thermal and chemical properties with regard to the dimensions and the intended application. Due to the low water absorption capacity, the use of polyolefinic materials for the household sector has proven particularly effective. In contrast, the use of POM, PETP, PA has proven to be cheaper in the area of industrial applications, where a higher exposure to organic solvents is to be feared.

Bei der vorgeschlagenen Stielbefestigung werden die Kräfte über die federelastische an der Innenwandung der Aussparung anliegenden Schenkel des U-förmig profilierten Zapfens auf den Stiel übertragen. Die Schenkel vermögen dadurch Abweichungen vom Idealmaß auszugleichen, und schwierig zu beherrschende Dimensionsveränderungen infolge von Schrumpfungen oder Quellungen sind insofern ohne jede Bedeutung.In the case of the proposed handle attachment, the forces are transmitted to the handle via the resilient legs of the U-shaped profile bearing against the inner wall of the recess. The legs are thus able to compensate for deviations from the ideal size, and dimensional changes that are difficult to control due to shrinkage or swelling are therefore of no importance.

Voraussetzung dieser elastischen Anpressung ist die, bezogen auf einen Profilschnitt, auf einen einzigen Punkt beschränkte Berührung zwischen einem jeden Schenkel und der zugehörigen Innenwandung der Aussparung. Die Schenkel vermögen insofern in den Zwischenzonen Unregelmäßigkeiten auszugleichen, wobei sich infolge der gleichmäßig ineinander übergehenden Wölbungen in den einzelnen Bereichen zugleich eine ausgeglichene, spezifische Querschnittsbelastung ergibt. Spannungsrisse im Bereich der Ubergangszonen zwischen den einzelnen Schenkeln sind aus diesem Grunde nicht zu befürchten.A prerequisite for this elastic contact pressure is the contact between each leg and the associated inner wall of the recess, which is limited to a single point with respect to a profile cut. In this respect, the legs are able to compensate for irregularities in the intermediate zones, with a balanced, specific cross-sectional load resulting at the same time as a result of the uniformly merging curvatures in the individual areas. For this reason, stress cracks in the area of the transition zones between the individual legs are not to be feared.

Der gegenseitige Abstand der drei, somit in einem Profilschnitt erhaltenen Lastangriffspunkte kann bei richtungsneutraler Krafteinleitung ausgeglichen sein und einander vollständig entsprechen. In bezug auf den Anwendungsfall eines üblichen Haushaltsbesens, der in Querrichtung eine größere Erstreckung hat als in Längsrichtung, hat es sich hingegen als vorteilhafter erwiesen, wenn der Abstand der Lastangriffspunkte der beiden seitlichen Schenkel voneinander größer ist als der Abstand dieser Lastangriffspunkte von demjenigen des mittleren Schenkels. Das Verhältnis zwischen beiden Abständen soll bei einem Haushaltsbesen 1,1 bis 2,5 betragen, bevorzugt 1,4.The mutual distance between the three load application points obtained in a profile section can be achieved with force that is neutral in direction introduction must be balanced and fully correspond to each other. With regard to the application of a common household broom, which has a greater extension in the transverse direction than in the longitudinal direction, it has proven to be more advantageous, however, if the distance between the load application points of the two side legs is greater than the distance of these load application points from that of the central leg . The ratio between the two distances in a household broom should be 1.1 to 2.5, preferably 1.4.

Der Zapfen und die Aussparung erstrecken sich im wesentlichen parallel zum Stiel, weshalb die gegenseitige Berührung nicht auf die angesprochenen drei Belastungspunkte beschränkt ist, sondern auf durchgehende Linienzüge entsprechend der tragenden Länge des Zapfens. Diese ist gegenüber der bis zum Anschlag zu messenden tatsächlichen Länge um ein Freimaß vermindert, welches zur Gewährleistung der benötigten Federelastizität erforderlich ist. Im Bereich dieser Zone, die unmittelbar an den Anschlag bzw. an die Mündung der Aussparung anschließt, ist der Querschnitt des Zapfens entweder soweit vermindert und/oder der Querschnitt der Aussparung soweit aufgeweitet, daß eine gegenseitige Berührung ausgeschlossen ist. Letzterer Ausführung wird insofern der Vorzug gegeben, als der Zapfen, verglichen mit dem Besenkörper, im genannten Bereich ohnehin einen verminderten, tragenden Querschnitt aufweist.The pin and the recess extend essentially parallel to the stem, which is why the mutual contact is not limited to the three loading points mentioned, but to continuous lines corresponding to the load-bearing length of the pin. Compared to the actual length to be measured up to the stop, this is reduced by a free dimension which is necessary to ensure the required spring elasticity. In the area of this zone, which directly adjoins the stop or the mouth of the cutout, the cross section of the pin is either reduced to such an extent and / or the cross section of the cutout is expanded to such an extent that mutual contact is excluded. The latter embodiment is preferred insofar as the pin has a reduced, load-bearing cross-section in the area mentioned, compared to the broom body.

Zur Erleichterung der Herstellung und zur Vereinfachung der Zusammenfügbarkeit hat es sich als vorteilhaft erwiesen, wenn der Zapfen unter entsprechender Anpassung der Aussparung im vorspringenden Teil kegelig verjüngt ist. Der Grad der kegeligen Verjüngung braucht nur geringfügig zu sein, und kann beispielsweise 1 bis 4° betragen. Eine entsprechende Variation hat keinen grundsätzlichen Einfluß auf das angesprochene Funktionsprinzip.To facilitate the manufacture and to simplify the assembly, it has proven to be advantageous if the pin is tapered conically in the projecting part, with the recess being correspondingly adapted. The degree of the tapered taper need only be slight and can be, for example, 1 to 4 °. A corresponding variation has no fundamental influence on the functional principle mentioned.

Das Verhältnis aus der größten Breite und der größten Höhe des U-förmig profilierten Zapfens soll 1,1 bis 2,1 betragen, bevorzugt 1,6. Innerhalb des angesprochenen Bereiches wird bei minimalen Abmessungen, d.h. optimalem Werkstoffeinsatz eine optimale Stabilität in bezug auf die Erfordernisse der Verankerung eines Besens, der eine größere Quer- als Längserstreckung aufweist, erzielt.The ratio of the greatest width and the greatest height of the U-shaped pin should be 1.1 to 2.1, preferably 1.6. Within the mentioned range, minimal dimensions, i.e. optimal use of materials optimal stability with respect to the requirements of anchoring a broom, which has a greater transverse than longitudinal extent achieved.

Das Verhältnis aus der Breite A und der Tiefe B der Einwölbungen der Schenkel soll 4,5 bis 7 betragen, bevorzugt 5,5. Innerhalb des angesprochenen Bereiches ergeben sich ausgeglichene Spannungen, bezogen auf den Gesamtquerschnitt des -aus einem U-förmig profilierten Streifen bestehenden Zapfens, d.h. eine besonders große Sicherheit gegen das Auftreten von Spannungsrissen beim Einstecken in die Aussparung des Besenkörpers. Das Maß B ist definiert als das absolute Maß der Einwölbung, das Maß A hingegen als der gegenseitige Abstand zwischen den am weitesten nach außen vorspringenden Stellen eines jeden Schenkels.The ratio of the width A and the depth B of the arching of the legs should be 4.5 to 7, preferably 5.5. Within the range mentioned, balanced tensions result, based on the total cross section of the pin, which consists of a U-shaped strip, i.e. a particularly high level of security against the occurrence of stress cracks when inserted into the recess of the broom body. Dimension B is defined as the absolute dimension of the arch, dimension A, however, as the mutual distance between the most outwardly projecting points of each leg.

Das Verhältnis aus der größten Länge des Führungszapfens und der größten Breite kann 1,5 bis 3 betragen, bevorzugt 2,0. Es nimmt Bezug auf die Gewährleistung einer besonders wackelsicheren Verbindung zwischen dem Stiel und dem eigentlichen Besenkörper bei leichter Handhabbarkeit. Beide Merkmale beeinflussen einander nachteilig, weshalb der vorgeschlagene Bereich als ein besonders günstiger Kompromiß zu werten ist.The ratio of the greatest length of the guide pin and the greatest width can be 1.5 to 3, preferably 2.0. It makes reference to ensuring a particularly wobble-proof connection between the handle and the actual broom body with easy handling. Both features adversely affect each other, which is why the proposed area is a particularly favorable compromise.

Die hervorzuhebenden Vorteile der vorgeschlagenen Stielbefestigung bestehen neben einer leichten Handhabbarkeit in einer besonders guten Funktionssicherheit, d.h. vor allem in der Gewährleistung einer von Verschleißerscheinungen, von Quellungen, Schrumpfungen und Ungenauigkeiten der Einzelteile, weitgehend unabhängigen, wackelsicheren Verbindung zwischen dem Stiel und dem Besenkörper. Die Stielbefestigung läßt sich kostengünstig herstellen, und sie zeichnet sich durch ein besonders geringes Gewicht bei hoher Haltbarkeit aus. Sie ist aus diesem Grunde nicht nur für Besen, sondern auch für die Verbindung anderer Arbeitsgeräte mit einem Stiel bestens geeignet.The notable advantages of the proposed handle attachment, in addition to being easy to handle, are particularly good functional reliability, ie above all the guarantee of a shake-proof connection between the handle and the broom body that is largely independent of signs of wear, swelling, shrinkage and inaccuracies of the individual parts. The handle attachment can be produced inexpensively, and is characterized by a particularly low weight and high durability. For this reason, it is not only ideal for brooms, but also for connecting other tools with a handle.

Die erfindungsgemäße Stielbefestigung wird nachfolgend anhand der in der Anlage beigefügten Zeichnungen näher erläutert. Es zeigen:

  • Figur 1 eine Stielbefestigung nach dem Einstecken in die Aussparung eines Besenkörpers in längsgeschnittener Darstellung.
  • Figur 2 die Stielbefestigung gemäß Figur 1 in quergeschnittener Darstellung entlang der Linie A:A.
The handle attachment according to the invention is explained in more detail below with reference to the drawings attached to the system. Show it:
  • Figure 1 shows a handle attachment after insertion into the recess of a broom body in a longitudinal section.
  • Figure 2 shows the handle attachment according to Figure 1 in a cross-sectional view along the line A: A.

Die Stielbefestigung 1 gemäß Figur 1 besteht aus einem thermoplastischen Kunststoff, nämlich aus POM, PETP, PA. Sie ist nach einem Spritzgießverfahren erhältlich.The handle attachment 1 according to FIG. 1 consists of a thermoplastic, namely POM, PETP, PA. It is available using an injection molding process.

Im oberen Bereich weist die Stielbefestigung einen zylindrischen Ansatz 14 auf, auf den der aus einem dünnwandigen Aluminiumrohr/ Eisenrohr bestehende Stiel 3 aufgesteckt ist. Die Vorderkante des Stieles ist durch einen umlaufenden Vorsprung 13 der Stielbefestigung verdeckt.In the upper area, the handle attachment has a cylindrical extension 14, onto which the handle 3 consisting of a thin-walled aluminum tube / iron tube is attached. The front edge of the handle is covered by a circumferential projection 13 of the handle attachment.

Im unteren Bereich erstreckt sich, im wesentlichen parallel zur Erstreckung des Stieles, der Zapfen 6. Dieser ist sowohl insgesamt als auch hinsichtlich seiner Wandstärke im vorspringenden Teil gleichmäßig kegelig verjüngt, und auf diese Weise besonders einfach herstell- und in die Aussparung 4 des Besenkörpers 2 einsteckbar.The pin 6 extends in the lower region, essentially parallel to the extension of the handle. This pin is tapered uniformly both overall and in terms of its wall thickness in the projecting part, and in this way is particularly easy to manufacture and into the recess 4 of the broom body 2 insertable.

Der Zapfen weist eine U-förmig zur rechten Seite hin geöffnete Ausnehmung 5 auf, in die, ausgehend von dem Anschlag 7, die Federzunge 15 mit dem daran angebrachten Vorsprung 8 hineinragt. Diese ist an der Vorderkante abgeschrägt, und weicht dadurch in die Ausnehmung 5 hinaus, wenn der Zapfen 6 in die Aussparung 4 eingesteckt wird. Zum nachträglichen Losen der Stielbefestigung ist es lediglich erforderlich, den Vorsprung 8 mit dem Daumen in die Ausnehmung 5 einzudrücken und die beiden Teile in Richtung des Besenstieles auseinander zu ziehen. Die Haltekante 9 wird auf diese Weise freigegeben.The pin has a U-shaped opening 5 towards the right side, into which, starting from the stop 7, the spring tongue 15 protrudes with the projection 8 attached to it. This is chamfered on the front edge, and thereby escapes into the recess 5 when the pin 6 is inserted into the recess 4. To subsequently loosen the handle attachment, it is only necessary to press the projection 8 into the recess 5 with the thumb and to pull the two parts apart in the direction of the broom handle. The holding edge 9 is released in this way.

Die Aussparung 4 ist im Bereich der Mündung zu einem den Zapfen umgebenden Freiraum erweitert, in dem beide Teile keinerlei gegenseitigen Kontakt haben. Der Freiraum dient der Gewährleistung einer ausreichenden Beweglichkeit der einzelnen Schenkel des Zapfens 6 in Qusrrichtung.The recess 4 is widened in the region of the mouth to a free space surrounding the pin, in which the two parts have no mutual contact. The free space serves to ensure sufficient mobility of the individual legs of the pin 6 in the transverse direction.

Figur 2 dient der Verdeutlichung der geomstrischen Situation in einer Ebene entlang der Schnittlinie A:A der zusamrengefügten Teile gemäß Figur 1. Der Zapfen 6 hat ein U-förmiges Profil, dessen drei Schenkel einwärts durchgewölbt sind und bei gleichbleibender Wandstärke abgerundet ineinander übergehen.Figure 2 serves to illustrate the geomstrical situation in a plane along the section line A: A of the assembled parts according to FIG.

Der Querschnitt der Aussparung 4 des Besenkörpers 2 ist demjenigen des Zapfens in etwa angepaßt, umschließt letzteres jedoch mit Ausnahme an den Lastangriffspunkten C in einem Abstand. Die einzelnen Schenkel 10, 11, 12 des Zapfens vermögen sich insofern in den Zwischenräumen der Lastangriffspunkte C frei zu bewegen, und auf diese Weise maßliche Abweichungen auszugleichen. Die Lastangriffspunkte verdeutlichen die Lage der sich parallel zu dem Stiel und damit senkrecht zur Zeichnungsebene erstreckenden Berührungslinien zwischen dem Zapfen und der Aussparung des Besenkörpers.The cross section of the recess 4 of the broom body 2 is approximately matched to that of the pin, but encloses the latter at a distance with the exception of the load application points C. The individual legs 10, 11, 12 of the pin are able to move freely in the spaces between the load application points C and to compensate for dimensional deviations in this way. The load application points clarify the position of the lines of contact extending parallel to the handle and thus perpendicular to the plane of the drawing between the pin and the recess of the broom body.

Die Kraftübertragung im Bereich der Berührungslinien erfolgt in Abhängigkeit von der tatsächlichen Belastung richtungsmäßig etwa im Sinne der in Figur 2 angezeichneten Vektoren, d.h. entsprechend den Bedingungen eines statisch stabilen Kräftedreiecks. Belastungsarten des Besenkörpers, bei denen ein Wackeln zu befürchten ist, können insofern nicht auftreten.The force transmission in the area of the contact lines takes place depending on the actual load in terms of direction approximately in the sense of the vectors drawn in FIG. 2, ie in accordance with the conditions of a statically stable triangle of forces. Stress In this respect, types of broom bodies that are likely to wobble cannot occur.

Die Größe der Einwölbung der Schenkel 10, 11, 12 des Profils des Zapfens 6 ist durch die Maße A und B definiert. Das Maß A kennzeichnet den Abstand der jeweils am weitesten nach außen vorspringenden Punkte, das Maß B den senkrecht gemessenen Abstand eines Punktes der gleichen Fläche, der am weitesten zurückspringt, beides gemessen in entlastetem Zustand.The size of the curvature of the legs 10, 11, 12 of the profile of the pin 6 is defined by the dimensions A and B. The dimension A denotes the distance between the most protruding points, the dimension B the vertically measured distance of a point on the same surface that protrudes the furthest, both measured in unloaded condition.

Claims (8)

1. Stielbefestigung für einen Besen, bestehend aus einem Besenkörper mit einer sich parallel zu dem Stiel erstreckenden Aussparung, in die ein angepaßter, mit dem Stiel verbundener Zapfen einsteckbar ist, der eine Ausnehmung, einen Anschlag sowie eine durch Handbetätigung in die Ausnehmung einfederbaren Vorsprung aufweist, dem eine Haltekante des Besenkörpers zugeordnet ist, dadurch gekennzeichnet, daß der Zapfen (6) aus einem Streifen mit einem U-Profil besteht, der eine im wesentlichen gleichbleibende Wandstärke aufweist, daß die einzelnen Schenkel des U-Profils abgerundet ineinander übergehen und in sich jeweils einwärts durchgewölbt sind, und daß die Bemessung der Wandstärke und die Anpassung des U-Profils an das Profil der Aussparung (4) so vorgenomτen sind, daß die beiden seitlichen Schenkel (10,11) entlang ihrer oberen Enden und der mittlere Schenkel (12) im Bereich der Symmetrieachse federnd an der im übrigen einen Abstand aufweisenden Innenwandung der Aussparung (4) anliegen.1. Handle attachment for a broom, consisting of a broom body with a recess extending parallel to the handle, into which an adapted pin connected to the handle can be inserted, which has a recess, a stop and a projection that can be deflected into the recess by hand , which is assigned a holding edge of the broom body, characterized in that the pin (6) consists of a strip with a U-profile, which has a substantially constant wall thickness, that the individual legs of the U-profile merge into one another in a rounded manner and in themselves are each arched inwards, and that the dimensioning of the wall thickness and the adaptation of the U-profile to the profile of the recess (4) are vorgenomτen so that the two side legs (10,11) along their upper ends and the middle leg (12th ) in the area of the axis of symmetry resiliently rest against the inner wall of the recess (4), which is otherwise spaced apart. 2. Stielbefestigung nach Anspruch 1, dadurch gekennzeichnet, daß das Verhältnis aus der größten Breite und der größten Höhe des U-Profils 1,1 bis 2,1 beträgt.2. handle attachment according to claim 1, characterized in that the ratio of the greatest width and the greatest height of the U-profile is 1.1 to 2.1. 3. Stielbefestigung nach Anspruch 1 bis 2, dadurch gekennzeichnet, daß das Verhältnis aus der größten Breite und der größten Höhe des U-Profils 1,6 beträgt.3. handle attachment according to claim 1 to 2, characterized in that the ratio of the greatest width and the greatest height of the U-profile is 1.6. 4. Stielbefestigung nach Anspruch 1, dadurch gekennzeichnet, daß das Verhältnis aus der Breite A und der Tiefe B der Einwölbungen der Schenkel 4,5 bis 7 beträgt, gemessen in entspanntem Zustand.4. handle attachment according to claim 1, characterized in that the ratio of the width A and the depth B of the bulges of the legs is 4.5 to 7, measured in the relaxed state. 5. Stielbefestigung nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß das Verhältnis aus der Breite (A) und der Tiefe (B) der Einwölbungen der Schenkel 5,5 beträgt, gemessen in entspanntem Zustand.5. handle attachment according to claim 1 to 4, characterized in that the ratio of the width (A) and the depth (B) of the curvatures of the legs is 5.5, measured in the relaxed state. 6. Stielbefestigung nach Anspruch 1 bis 2, dadurch gekennzeichnet, daß das Profil des Zapfens im vorspringenden Teil gleichmäßig verjüngt ist.6. handle attachment according to claim 1 to 2, characterized in that the profile of the pin is tapered uniformly in the projecting part. 7. Stielbefestigung nach Anspruch 1 bis 6, dadurch gekennzeichnet, daß das Verhältnis aus der größten Länge des Führungszapfens und der größten Breite 1,5 bis 3,0 beträgt.7. handle attachment according to claim 1 to 6, characterized in that the ratio of the greatest length of the guide pin and the greatest width is 1.5 to 3.0. 8. Stielbefestigung nach Anspruch 1 bis 7, dadurch gekennzeichnet, daß das Verhältnis aus der größten Länge des Führungszapfens und der größten Breite 2,0 beträgt.8. handle attachment according to claim 1 to 7, characterized in that the ratio of the greatest length of the guide pin and the greatest width is 2.0.
EP82100510A 1981-10-30 1982-01-26 Broom handle attachment Expired EP0078358B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100510T ATE16467T1 (en) 1981-10-30 1982-01-26 HANDLE ATTACHMENT FOR A BROOM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3143080A DE3143080C2 (en) 1981-10-30 1981-10-30 Handle attachment, especially for brooms
DE3143080 1981-10-30

Publications (3)

Publication Number Publication Date
EP0078358A2 true EP0078358A2 (en) 1983-05-11
EP0078358A3 EP0078358A3 (en) 1984-05-30
EP0078358B1 EP0078358B1 (en) 1985-11-13

Family

ID=6145204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100510A Expired EP0078358B1 (en) 1981-10-30 1982-01-26 Broom handle attachment

Country Status (8)

Country Link
EP (1) EP0078358B1 (en)
AT (1) ATE16467T1 (en)
DE (1) DE3143080C2 (en)
DK (1) DK163715C (en)
ES (1) ES268280Y (en)
FI (1) FI76481C (en)
NO (1) NO151491C (en)
PT (1) PT74433B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0234210A2 (en) * 1986-01-15 1987-09-02 Heinrich Weynhoven Coupling for connecting a brush-head or the like to a shaft
GB2209301A (en) * 1987-09-03 1989-05-10 Neil Holdings Ltd James Hand tools
EP0354840A1 (en) * 1988-08-09 1990-02-14 3 D, Société anonyme Hand-held gardening tool comprising a handle for the receipt of various exchangeable tools
GB2224231A (en) * 1988-10-25 1990-05-02 Kenneth William Sharp Brush
WO1994025223A1 (en) * 1993-04-29 1994-11-10 Metaform Metallverarbeitungsgesellschaft Mbh Joining element for detachably joining a tool to a handle
EP0640303A1 (en) * 1993-08-27 1995-03-01 Sterkel GmbH Pinsel- und Farbrollerwerk Paintbrush
US5404616A (en) * 1993-09-30 1995-04-11 Carmien; Joseph A. Hand tool with removable handle
US6106539A (en) * 1998-04-15 2000-08-22 Neosurg Technologies Trocar with removable, replaceable tip
US6340358B1 (en) 1999-02-23 2002-01-22 Neosurg Technologies, Inc. Trocar
EP1025883A3 (en) * 1999-02-08 2003-01-02 Exel Oy Pole provided with a quick-releasing interchangeable lateral support extension
US20140143963A1 (en) * 2011-07-12 2014-05-29 Colgate-Palmolive Company Refill head for an oral care implement handle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428972C1 (en) * 1994-08-16 1996-02-08 Hazet Werk Zerver Hermann Device for releasably fixing a handle that can be rotated for adjustment purposes
DE102016012586B4 (en) 2016-10-21 2020-02-06 Mtd Products Inc. Detachable handle attachment coupling for tools

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2906154A1 (en) * 1979-02-17 1980-08-21 Freudenberg Carl Fa Broom handle securing fixture - consists of polygonal socket and handle end, with protrusion fitting into conical cavity on broom socket

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8027607U1 (en) * 1981-01-29 Max Langenstein, Feld- Und Gartengeraete Gmbh & Co, 7918 Illertissen Work device, such as gardening device, field device, cleaning device or the like
FR2203265A7 (en) * 1972-10-14 1974-05-10 Dietsche Roman Kg

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2906154A1 (en) * 1979-02-17 1980-08-21 Freudenberg Carl Fa Broom handle securing fixture - consists of polygonal socket and handle end, with protrusion fitting into conical cavity on broom socket

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0234210A2 (en) * 1986-01-15 1987-09-02 Heinrich Weynhoven Coupling for connecting a brush-head or the like to a shaft
EP0234210A3 (en) * 1986-01-15 1989-03-01 Heinrich Weynhoven Coupling for connecting a brush-head or the like to a shaft
GB2209301A (en) * 1987-09-03 1989-05-10 Neil Holdings Ltd James Hand tools
EP0354840A1 (en) * 1988-08-09 1990-02-14 3 D, Société anonyme Hand-held gardening tool comprising a handle for the receipt of various exchangeable tools
FR2635290A1 (en) * 1988-08-09 1990-02-16 Dumont Alain HAND GARDEN TOOL COMPRISING A HAND AND VARIOUS MOUNTING TOOLS INTERCHANGEABLE TO THIS HANDLE
GB2224231A (en) * 1988-10-25 1990-05-02 Kenneth William Sharp Brush
WO1994025223A1 (en) * 1993-04-29 1994-11-10 Metaform Metallverarbeitungsgesellschaft Mbh Joining element for detachably joining a tool to a handle
EP0640303A1 (en) * 1993-08-27 1995-03-01 Sterkel GmbH Pinsel- und Farbrollerwerk Paintbrush
US5404616A (en) * 1993-09-30 1995-04-11 Carmien; Joseph A. Hand tool with removable handle
US6106539A (en) * 1998-04-15 2000-08-22 Neosurg Technologies Trocar with removable, replaceable tip
US6544277B1 (en) 1998-04-15 2003-04-08 Neosurg Technologies, Inc. Obturator assembly
EP1025883A3 (en) * 1999-02-08 2003-01-02 Exel Oy Pole provided with a quick-releasing interchangeable lateral support extension
US6340358B1 (en) 1999-02-23 2002-01-22 Neosurg Technologies, Inc. Trocar
US20140143963A1 (en) * 2011-07-12 2014-05-29 Colgate-Palmolive Company Refill head for an oral care implement handle

Also Published As

Publication number Publication date
NO151491C (en) 1985-04-24
NO820596L (en) 1983-05-02
PT74433B (en) 1983-09-27
DK163715B (en) 1992-03-30
DK163715C (en) 1992-09-07
EP0078358B1 (en) 1985-11-13
FI76481B (en) 1988-07-29
FI820655L (en) 1983-05-01
DK112182A (en) 1983-05-01
NO151491B (en) 1985-01-07
EP0078358A3 (en) 1984-05-30
DE3143080A1 (en) 1983-05-19
ES268280U (en) 1983-05-01
FI76481C (en) 1988-11-10
DE3143080C2 (en) 1983-09-29
ES268280Y (en) 1983-11-16
PT74433A (en) 1982-03-01
ATE16467T1 (en) 1985-11-15

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