EP0208942A2 - Handle - Google Patents

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Publication number
EP0208942A2
EP0208942A2 EP86108371A EP86108371A EP0208942A2 EP 0208942 A2 EP0208942 A2 EP 0208942A2 EP 86108371 A EP86108371 A EP 86108371A EP 86108371 A EP86108371 A EP 86108371A EP 0208942 A2 EP0208942 A2 EP 0208942A2
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EP
European Patent Office
Prior art keywords
booklet
booklet according
zones
zone
grip
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
EP86108371A
Other languages
German (de)
French (fr)
Other versions
EP0208942B1 (en
EP0208942A3 (en
Inventor
Jan-Eric Dipl.-Ing. Bandera
Peter Dipl.-Ing. Kern
Karl Lieser
Roland Dipl.-Ing. Schindhelm
Johannes Solf
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.)
Wera Werk Hermann Werner GmbH and Co KG
Original Assignee
Wera Werk Hermann Werner GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Priority to AT86108371T priority Critical patent/ATE51560T1/en
Publication of EP0208942A2 publication Critical patent/EP0208942A2/en
Publication of EP0208942A3 publication Critical patent/EP0208942A3/en
Application granted granted Critical
Publication of EP0208942B1 publication Critical patent/EP0208942B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/105—Handle constructions characterised by material or shape for screwdrivers, wrenches or spanners
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/12—Hand grips, preformed and semi-permanent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/902—Unitary handle composed of different cooperating materials

Definitions

  • the invention relates to a booklet for tools, in particular screwdrivers, according to the preamble of claim 1.
  • a booklet of this type is known from US Pat. No. 2,871,899.
  • the outer surface of the booklet viewed in the longitudinal direction of the booklet, has grip zones of harder and softer material one behind the other. This is achieved by sheathing a partial length of the cylindrical stapling body with the soft body, whereby the tool-side end area, which makes up about a third of the total length, is exposed as a harder gripping zone.
  • the applied sleeve-like sheath against rotation it engages with corresponding axially aligned projections in corresponding grooves of the stitching core.
  • Such equipment made of rubber-like material which can be viewed practically as a full covering, is disadvantageous in terms of handling; it turns out to be too "spongy".
  • the tool is not suitable for continuous use.
  • the short, harder gray zone is also reduced in diameter and is mainly used for the so-called “twisting", ie for the initial screwing in of the screws under low load.
  • the application of a higher torque is reserved for the area of the softly covered booklet end.
  • a screwdriver booklet which is specially designed from the point of view of the application of a high torque, that is to say a good storage of the booklet in the operating hand.
  • the individual fillets which are distributed around the circumference of the stitching body and are angled in this direction, allow a secure clamping grip.
  • the object of the invention is to design a generic tool in a technically simple, advantageous manner in such a way that high torques can be transmitted on the one hand, but on the other hand the grip is significantly improved and, above all, more pleasant to the hand.
  • the ring intermediate zone which has the largest diameter and lies in the middle of the hand, is thus available as a hard surface for the application of a high torque; it has the largest lever length (rotationally symmetrical) and forms the stable guiding zone for the re-gripping; the axially adjoining grip zones, on the other hand, are elastically flexible. Is too the screwing speed increases due to the smaller cross-sectional truncated cones; the so-called "twirling" can be used here. It also proves to be advantageous that the grip zones of softer material are interrupted in the circumferential direction by intermediate sections of harder material. In this regard, a uniform, balanced hard / soft distribution of the available gripping surface can be achieved.
  • a structure which corresponds to the grip-friendly structure of the tool booklet according to DE-PS 1 298 060 with the added advantage of improved grip results from the fact that the grip zones of softer material form single fillets which extend into the intermediate zone.
  • this intermediate ring zone embedded in the elastic grip mass like a wheel body is consequently also fully structurally included in the measure for achieving good grip.
  • a polygon is practically achieved in the cross-sectional area of the individual fillets.
  • the end face facing away from the blade is equipped with a spherical dome made of hard plastic. This allows leverage to be exerted on the exercise book without the risk of stressing the palm of the hand.
  • the fact that ring grooves are formed further in the end faces of the intermediate zone increases the connecting zone between the two types of material. That too plane-offset "joint" brings an advantageously large accumulation of material, so that there is no tearing or spreading apart of the two bonded materials forming the tool book.
  • the circular ring zone is better than or a polygonal ring zone, especially for larger booklets. If the former is present, the polygonal shape of the blade-side end region has the advantage that the filed booklet cannot roll away.
  • the grip zones are made of softer material than pads used in depressions in the base body made of harder plastic material.
  • the invention proposes that the cushions are inserted in the area of the individual fillets and form a top side which is designed to be concave in the direction of the fillet and which is convex in the transverse direction. It is accordingly a hollow back-like cushion on the outside, the back of which is arched. From a manufacturing point of view, it proves advantageous that the cushions are designed to be uniform with one another. If it is about the symmetrical structure leaving forms, it is favorable that the mutually identical pads in the two Truncated cones are used upside down; namely, they can increase in width in the direction of the intermediate zone of the booklet with a larger cross section.
  • a screwdriver blade 1 with a hexagonal cross section is incorporated into the illustrated base body K.
  • the screwdriver handle has at its blade end an annular groove 2 which ends in the end of the handle in a collar 3 which can be polygonal according to FIGS. 4 and 7.
  • the other end of the stitching body section which attaches to the ring groove 2, is designed in a modification of a basic barrel shape (see dash-dot line "F" in FIGS. 1 and 7). It is designed so that on both sides of an annular zone 4 in the plane x-x of the largest handle base body diameter D lying transverse to the blade 1 4 individual grooves 5 and 6 extend.
  • the latter run in the longitudinal direction of the basic booklet body K. They are concave in this direction in such a way that the individual fillets 5, 6 from the ring zone 4 of the largest diameter of the booklet body D to the smaller diameter of the basic booklet body d 1 and d 2 drop.
  • these sections one can therefore speak practically of frustoconically tapering zones extending on both sides of the largest diameter in the manner of truncated cones. The latter are facing each other with their larger base areas.
  • the individual fillets 5 and 6 are arranged in an angularly symmetrical arrangement about the longitudinal central axis y-y of the base body K of the booklet. Viewed in the circumferential direction, the individual fillets 5, 6 form a rectilinear base 8 (see FIGS. 3 and 10), which could, however, also be slightly concave.
  • the angular distance between the individual fillets is 60 ° to each other.
  • the marginal edges 9 of the individual fillets 5 and 6 are rounded both in the transverse direction and in the longitudinal direction of the base body K.
  • the curves are only made so far that only the edges generated by the fillet are broken, but otherwise there is a multifaceted basic shape with high grip.
  • the quite multifaceted gripping surface of the basic magazine body K has hard and soft-elastic grip zones.
  • the tapered zones according to FIG. 2, that is to say the two truncated cones are realized as soft grip zones W; H. on the outside they are predominantly made of resilient, compressible material, such as, for example, soft plastic, rubber or the like.
  • the intermediate zone 4, which has the larger diameter D and is of circular design, consists of hard, non-compressible material, in particular hard plastic, and forms the hard grit zones H with its exposed outer surface.
  • the individual fillets 5 and 6 lying on the tapering zones also go into the hard plastic intermediate zone 4. These account for about a third to a quarter of the surface.
  • the ring-individual fillet 2 adjoining the zone tapering on the blade side is likewise made of the elastically flexible material according to FIG. 2. It is a relatively weakly hollowed section of the ring throat.
  • the latter has a hard plastic core 10, which contains the end of the screwdriver blade 1 molded on the base body side and equipped with flattened wings 11. Such wings can be produced by flattening the shaft 1 of the blade 1, which is hexagonal in cross section.
  • the elastically resilient zone consequently occurs in the shaft-covering overlap region as a jacket M 1 (FIG. 2).
  • the hard plastic core 10 continues practically over the entire length of the base body K of the booklet. This section is designated 10 '. As a result, they are both tapered sections in the form of elastic sheaths M 2, M 3 formed around the hard plastic core 10/10 '. The thickness of the shells M 1, M 2, M 3 is essentially constant. This results in equivalent elasticity for the soft areas. The fingers of the holding hand do not "drown" in the elastic material. The core rather leads to a stabilizing basis.
  • a dome-shaped tip 12 made of hard plastic. This can be a separately formed, subsequently attached individual component (as shown in FIG. 2) or, of course, an immediately molded tip. The multiple parts are recommended if such a crest 12 is to consist of even harder material, for example if such tool handles for chisels (chisels) are to be used.
  • a central pin 13 of the dome enters a corresponding recess 14 in the end section of the hard plastic core 10.
  • the spherical top surface runs smoothly into the tapered zone made of elastic material.
  • the surface of the hard plastic core 10/10 'roughly matched to the surface shape of the base body of the booklet is strongly grooved or stepped. This leads to an intimate bond between the jacket-forming elastic material.
  • Such a structure of the core proves to be particularly advantageous when the shells M 1 to M 3 are molded onto the core.
  • the shells M 2 and M 3 are connected to one another due to tunnel-like openings 15 in the intermediate zone. A total of four such openings 15 arranged at the same angle are provided.
  • the two mantles M 2 and M 3 connecting concealed Material bridges are identified by the reference number 16. With regard to the openings 15, there are longitudinal bores lying parallel to the longitudinal central axis yy and spaced at the same distance.
  • the end faces 4 'of the annular intermediate zone 4 have annular grooves 17.
  • the adjacent soft material can step practically roof-shaped under the edge of the hard plastic ring zone 4. There is a larger joint area and thus a good adhesive bond.
  • the individual fillets 5 rise slightly, especially in the area of the stitching body on the blade.
  • the thumb as a counterpart, ie its end member in the single fillet 5 finds a favorable support position and thus favors a quick and easy turning (so-called twisting) of the screwdriver, which occurs when a screw is screwed in before Tightening is one of the main functions of the screwdriver.
  • the fold of the joint between the middle link and the end link comes to lie exactly in the ridge of the intermediate ring zone 4 of the largest diameter D of the basic body K of the booklet. When stored this way, the thumb experiences its largest contact surface.
  • the ball of the thumb and the wrist can therefore tightly enclose the base body K.
  • the latter encompassing other fingers find equally favorable storage positions in the individual fillets 5 and 6, the different lengths of the individual finger limbs and the position of the fingers being fully taken into account by designing the basic booklet body in a basic barrel shape.
  • the single fillets 5, 6 and their special geometrical arrangement provide optimal insert surfaces for the fingers and prevent the risk of the hand slipping off the staple body K.
  • the overall strongly faceted surface still allows a certain adjustment to different indentation parts, since the elastic resilient grip zones W allow the appropriate adjustment. Still can be said about the harder Ring zone, which has the largest diameter, achieve a high torque. 4 to 6, the resilient material surfaces W and the hard plastic areas H are each provided in a different division.
  • the soft material extends into a polygonal end section E as a roll-away protection, this being so large that it comes into contact with the pad due to the weight of the blade when the booklet is lying down.
  • the screwdriver booklet according to the second embodiment (FIGS. 7 to 11) is basically of the same structure; the reference numbers are used analogously, in some cases without repeated text.
  • the two grip zones W of softer material which are adjacent to the grip zone H of harder material are here divided on the one hand into the intermediate zone 4 of the largest diameter D, that is to say interrupted.
  • soft zone fields lie within a practically lattice-like surface structure of the hard handle base body K.
  • the interruption lies in the circumferential direction, as a result of which soft and hard grip zones W and H alternate with one another in this direction. Such a subdivision is also conceivable in the axial direction.
  • the grip zones W of softer material form single fillets that pass into the intermediate zone.
  • the grip zones W of softer material are designed as pads P which are inserted into depressions 18 of the base body K made of a harder material.
  • the depressions 18 have undercut side walls 19 on all sides. The undercut angle is 20 ° to the base of the recess.
  • the side walls 19 are engaged behind by the correspondingly trapezoidal foot of the cushion P, so that there is a good support for the cushion P when there is a correspondingly positive engagement.
  • the cushions P protrude above the fillet 8 of the individual fillets 5, 6. Their upper side, when seen in the transverse direction, is convex. The bulge can extend over the entire transverse width of a single fillet.
  • an upper-side curvature that is only near the edge is also conceivable, so that, as in the exemplary embodiment, the surface area of the upper side that remains between the transverse transverse curvatures runs parallel to the base of the recesses 18.
  • the transversely rounded edge region of the pads P overlaps the recess edge 20 like a lip.
  • the cushions P take on a concave fillet shape to match the shape of the individual fillets 5, 6 (see FIG. 8).
  • the section of the cushions projecting beyond the individual fillets 5 corresponds to approximately one third to one fifth of the total thickness of the cushions.
  • the cushions P are of identical design to one another (the slight deviations are due to the drawing).
  • the cushions P have a corresponding, almost congruent plan.
  • the ends of the pads P pointing in this central direction are somewhat wider.
  • the assembly of the booklet is consequently carried out in such a way that the mutually identical cushions P on the two truncated cones are used reversed to each other.

Abstract

A handle for tools, specifically for screwdrivers, is disclosed. The handle consists of two materials of different hardness, of which the harder material supporting the tool is incompressible under the forces occurring at operational load, whereas the other material permits slight elastic deformations under forces of load. In order to obtain a hand-sympathetic design which nevertheless transmits high torques, the two gripping zones of softer material are situated adjacent to a gripping zone of harder material located between them.

Description

Die Erfindung bezieht sich auf ein Heft für Werkzeuge, insbesondere Schraubendreher, gemäß Gattungsbegriff des Patentanspruchs 1.The invention relates to a booklet for tools, in particular screwdrivers, according to the preamble of claim 1.

Ein Heft dieser Art ist durch die US-PS 2,871,899 bekannt. Dort weist die Außenoberfläche des Heftes in Längsrichtung desselben gesehen hintereinander Griffzonen härteren und weicheren Materiales auf. Erzielt ist dies durch Weichkörper-Ummantelung einer Teillänge des zylindrischen Heftkörpers, wobei der werkzeugseitige, etwa ein Drittel der Gesamtlänge ausmachende Endbereich als härtere Greifzone freiliegt. Zur Drehsicherung der aufgebrachten hülsenartigen Ummantelung greift diese mit innenseitig liegenden, axial ausgerichteten Vorsprüngen in korrespondierende Nuten des Heftkerns ein. Eine solche praktisch als Vollbemantelung anzusehende Ausrüstung aus gummiähnlichem Material ist handhabungsnachteilig; sie erweist sich als zu "schwammig". Vor allem bei Dauerbenutzung entstehen durch Walkfalten und die erhöhte Haftreibung Rötungen bzw. sogar Entzündungen an der Bedienungshand. Das Werkzeug ist für den Dauereinsatz nicht geeignet. Die kurze, härtere Greitzone ist überdies durchmesserreduziert und wird hauptsächlich für das sogenannte "Zwirbeln" benutzt, also für das anfängliche Eindrehen der Schrauben unter geringer Belastung. Das Aufbringen eines höheren Drehmoments ist dagegen dem Bereich des weich ummantelten Heftendes vorbehalten.A booklet of this type is known from US Pat. No. 2,871,899. There the outer surface of the booklet, viewed in the longitudinal direction of the booklet, has grip zones of harder and softer material one behind the other. This is achieved by sheathing a partial length of the cylindrical stapling body with the soft body, whereby the tool-side end area, which makes up about a third of the total length, is exposed as a harder gripping zone. To secure the applied sleeve-like sheath against rotation, it engages with corresponding axially aligned projections in corresponding grooves of the stitching core. Such equipment made of rubber-like material, which can be viewed practically as a full covering, is disadvantageous in terms of handling; it turns out to be too "spongy". Especially when used continuously, wrinkles and increased static friction cause redness or even inflammation on the operating hand. The tool is not suitable for continuous use. The short, harder gray zone is also reduced in diameter and is mainly used for the so-called "twisting", ie for the initial screwing in of the screws under low load. The application of a higher torque, however, is reserved for the area of the softly covered booklet end.

Durch die DE-PS 1 298 060 ist andererseits ein Schraubendreherheft bekannt, welches unter dem Gesichtspunkt der Aufbringung eines hohen Drehmoments speziell gestaltet ist, also eine gute Einlagerung des Heftes in der Bedienungshand ermöglicht. Die am Umfang des Heftkörpers verteilt angeordneten, in dieser Richtung winklig zueinander stehenden Einzel-Hohlkehlen gestatten einen sicheren Spanngriff.From DE-PS 1 298 060, on the other hand, a screwdriver booklet is known which is specially designed from the point of view of the application of a high torque, that is to say a good storage of the booklet in the operating hand. The individual fillets, which are distributed around the circumference of the stitching body and are angled in this direction, allow a secure clamping grip.

Aufgabe der Erfindung ist es, ein gattungsgemäßes Werkzeug in herstellungstechnisch einfacher, gebrauchsvorteilhafter Weise so auszubilden, daß einerseits hohe Drehmomente übertragen werden können, andererseits aber die Griffigkeit wesentlich verbessert und vor allem handsympathischer ist.The object of the invention is to design a generic tool in a technically simple, advantageous manner in such a way that high torques can be transmitted on the one hand, but on the other hand the grip is significantly improved and, above all, more pleasant to the hand.

Gelöst ist diese Aufgabe durch die im Anspruch 1 angegebene Erfindung.This object is achieved by the invention specified in claim 1.

Die Unteransprüche sind vorteilhafte Weiterbildungen des erfindungsgemäßen Heftes.The subclaims are advantageous developments of the booklet according to the invention.

Zufolge solcher Ausgestaltung ist ein gattungsgemäßes Heft von erhöhtem Gebrauchswert erzielt: Die Bedienungshand verliert nicht den Spanngriff zum unverformbaren Material des Heftes. Andererseits ist der Flächenanteil an weicherem Material reduziert, so daß die aufgezeigten Nachteile bei Dauerbenutzung praktisch nicht mehr auftreten; die ausgewogene Aufteilung bringt einerseits die gewünschte griffsympatische Einlegung in der Bedienungshand und andererseits die Möglichkeit der Aufbringung höherer Drehmomente. Optimiert ist dies durch die weitere Maßnahme, daß die Zwischenzone härteren Materiales diejenige größten Durchmessers ist und die dazu benachbarten Griffzonen weichen Materiales in Form von sich zu den Enden des Heftes hin verjüngenden Kegelstümpfen gestaltet sind. Es ergibt sich eine Art Faßform. Die den größten Durchmesser aufweisende, in der Handmitte einliegende Ring-Zwischenzone steht somit für die Aufbringung eines hohen Drehmoments als Hartfläche zur Verfügung; sie hat die größte Hebellänge (rotationssymmetrisch) und bildet die stabile Führungszone für das Nachgreifen; die sich beiderends axial anschließenden Griffzonen sind dagegen elastisch nachgiebig. Auch ist die Schraubschnelligkeit erhöht zufolge der querschnittskleineren Kegelstümpfe; hier läßt sich das sogenannte "Zwirbeln" anwenden. Als vorteilhaft erweist es sich weiter, daß die Griff zonen weicheren Materiales in Umfangsrichtung unterbrochen sind von Zwischenabschnitten härteren Materiales. Diesbezüglich kann eine gleichmäßige, ausgewogene Hart/Weich-Aufteilung der zur Verfügung stehenden Greiffläche erreicht werden. Eine dem griffsympatischen Aufbau des Werkzeugheftes gemäß DE-PS 1 298 060 gleichkommende Struktur mit dem hinzukommenden Vorteil der verbesserten Griffigkeit ergibt sich dadurch, daß die Griffzonen weicheren Materiales Einzel-Hohlkehlen ausbilden, die bis in die Zwischenzone reichen. Hierdurch ist diese wie ein Radkörper in die elastische Griffmasse eingebettete Ring-Zwischenzone in die Maßnahme zur Erzielung einer guten Griffigkeit folglich auch strukturmäßig voll mit einbezogen. Auf diese Weise wird im Querschnittsbereich der Einzel-Hohlkehlen praktisch ein Mehrkant erzielt. Darüber hinaus erweist es sich weiter als vorteilhaft, daß die klingenabgewandte Stirnfläche mit einer kalottenförmigen Kuppe aus Hartkunststoff bestückt ist. Hierdurch können Stemmkräfte auf das Heft ausgeübt werden, ohne die Gefahr einer besonderen Beanspruchung der Handinnenfläche. Auch ergibt sich ein guter Gleitschutz für die aufliegende Handhöhlung, während die andere Hand das "Zwirbeln" bewirkt. Eine solche Kuppe verträgt andererseits sogar Hammerschläge. Durch die bauliche Maßnahme, daß sich an den sich klingenseitig verjüngenden Abschnitt eine ebenfalls aus elastisch nachgiebigem Material bestehende Ringkehle anschließt, gewinnt man eine die Griffigkeit begünstigende Nachgiebigkeit auch in diesem klingennahen Bereich. Günstig ist es auch, daß beide sich verjüngenden Griffzonen in Form elastischer Mäntel um einen Hartkunststoffkern realisiert sind. Die verformenden Kräfte verteilen sich daher auf von härterem Material unterfangene Bereiche des Werkzeugheftes . Günstig ist es dabei, daß die Mäntel aufgeformt sind und über tunnelartige Durchbrechungen in der Zwischenzone zusammenhängen. Dadurch, daß weiter in den Stirnflächen der Zwischenzone Ringnuten ausgebildet sind, vergrößert sich die Verbindungszone zwischen beiden Materialarten. Die so auch ebenenversetzte "Fuge" bringt eine vorteilhaft große Materialanhäufung, so daß es nicht zu einem Abreißen oder Aufspreizen der beiden in Haftverbund stehenden, das Werkzeugheft bildenden Materialien kommt. Die kreisförmige Ringzone ist insbesondere bei größeren Heften besser als bzw. eine mehrkantige Ringzone. Ist erstere vorhanden, so bringt die Mehrkant-Form des klingenseitigen Endbereiches den Vorteil, daß das abgelegte Heft nicht wegrollen kann. Darüber hinaus erweist es sich als vorteilhaft, daß die Griffzonen weicheren Materiales als in Vertiefungen des aus härterem Kunststoffmaterial bestehenden Grundkörpers eingesetzte Polster gestaltet sind. Diese Art der Aufteilung in Einzelkörper eröffnet sogar die Möglichkeit der Verwendung unterschiedlicher Weichheitsgrade, so daß jeweils eine ganz spezielle bzw. individuelle Bestückung des Heftes erfolgen kann. Auch wechselnde Härtegrade benachbarter Weichpolster lassen sich nutzen. Zu einer einfachen und zugleich auch haltbaren Fixierung gelangt man, wenn die Vertiefungen hinterschnittene Seitenwände besitzen zur Halterung der formschlüssig einsitzenden Polster. Wird auf besonders weiches Polstermaterial zurückgegriffen, so kann auch eine zusätzliche Sicherung durch Verkleben hinzukommen. Die Grenzanschlüsse zwischen weich und hart lassen sich vor allen Dingen dadurch günstig entschärfen, daß der obere Bereich der Polster den Vertiefungsrand übergreift. Es handelt sich somit praktisch um pilzförmige Polster. Deren Oberseite ist konvex gewölbt. Die Polster nehmen so eine exponierte Lage gegenüber dem härteren Heft-Grundkörper ein. Hauptsächlich erst unter Eindrücken des überstehenden Bereichs liegt die Haut der Bedienungshand auch auf den härteren Griffzonen an. Weiter bringt die Erfindung in Vorschlag, daß die Polster im Bereich der Einzelhohlkehlen eingesetzt sind und eine zum konkaven Kehlenverlauf gestaltete, in Querrichtung konvexe Oberseite formen. Es handelt sich demgemäß um außenseitig hohlrückenartige Polster, deren Rücken quergewölbt ist. Herstellungstechnisch erweist es sich als vorteilhaft, daß die Polster untereinander gleichförmig gestaltet sind. Handelt es sich dabei um den symmetrischen Aufbau verlassende Formen, so ist es günstig, daß die untereinander gleichgestalteten Polster in den beiden Kegelstümpfen zueinander umgewendet eingesetzt sind; sie können nämlich in Richtung der querschnittsgrößeren Zwischenzone des Heftes hin an Breite zunehmen.As a result of such a design, a generic booklet of increased utility value is achieved: the operating hand does not lose the grip on the non-deformable material of the booklet. On the other hand, the proportion of area of softer material is reduced, so that the disadvantages shown practically no longer occur when used continuously; the balanced division brings on the one hand the desired grip-friendly insertion in the operating hand and on the other hand the possibility of applying higher torques. This is optimized by the further measure that the intermediate zone of harder material is that of the largest diameter and the adjacent grip zones of soft material are designed in the form of truncated cones tapering towards the ends of the booklet. There is a kind of barrel shape. The ring intermediate zone, which has the largest diameter and lies in the middle of the hand, is thus available as a hard surface for the application of a high torque; it has the largest lever length (rotationally symmetrical) and forms the stable guiding zone for the re-gripping; the axially adjoining grip zones, on the other hand, are elastically flexible. Is too the screwing speed increases due to the smaller cross-sectional truncated cones; the so-called "twirling" can be used here. It also proves to be advantageous that the grip zones of softer material are interrupted in the circumferential direction by intermediate sections of harder material. In this regard, a uniform, balanced hard / soft distribution of the available gripping surface can be achieved. A structure which corresponds to the grip-friendly structure of the tool booklet according to DE-PS 1 298 060 with the added advantage of improved grip results from the fact that the grip zones of softer material form single fillets which extend into the intermediate zone. As a result, this intermediate ring zone embedded in the elastic grip mass like a wheel body is consequently also fully structurally included in the measure for achieving good grip. In this way, a polygon is practically achieved in the cross-sectional area of the individual fillets. In addition, it proves to be advantageous that the end face facing away from the blade is equipped with a spherical dome made of hard plastic. This allows leverage to be exerted on the exercise book without the risk of stressing the palm of the hand. There is also good anti-slip protection for the overlying hand cavity, while the other hand causes the "twisting". Such a crest, on the other hand, even tolerates hammer blows. As a result of the structural measure that an annular fillet likewise made of resilient material adjoins the section tapering on the blade side, a flexibility which favors the grip is also obtained in this area close to the blade. It is also favorable that both tapered grip zones are realized in the form of elastic sheaths around a hard plastic core. The deforming forces are therefore distributed over areas of the tool handle that are undercut by harder material. It is favorable that the coats are molded on and connected via tunnel-like openings in the intermediate zone. The fact that ring grooves are formed further in the end faces of the intermediate zone increases the connecting zone between the two types of material. That too plane-offset "joint" brings an advantageously large accumulation of material, so that there is no tearing or spreading apart of the two bonded materials forming the tool book. The circular ring zone is better than or a polygonal ring zone, especially for larger booklets. If the former is present, the polygonal shape of the blade-side end region has the advantage that the filed booklet cannot roll away. In addition, it proves to be advantageous that the grip zones are made of softer material than pads used in depressions in the base body made of harder plastic material. This type of division into individual bodies even opens up the possibility of using different degrees of softness, so that a very special or individual loading of the booklet can take place in each case. Changing degrees of hardness of neighboring soft cushions can also be used. A simple and at the same time durable fixation is achieved if the recesses have undercut side walls for holding the positively seated upholstery. If particularly soft upholstery material is used, additional securing by gluing can also be added. The boundary connections between soft and hard can be mitigated, above all, by the fact that the upper area of the upholstery overlaps the edge of the recess. It is practically mushroom-shaped upholstery. The upper side is convex. The upholstery occupies an exposed position in relation to the harder handle body. The skin of the operating hand only lies on the harder grip areas only when the protruding area is pressed in. Furthermore, the invention proposes that the cushions are inserted in the area of the individual fillets and form a top side which is designed to be concave in the direction of the fillet and which is convex in the transverse direction. It is accordingly a hollow back-like cushion on the outside, the back of which is arched. From a manufacturing point of view, it proves advantageous that the cushions are designed to be uniform with one another. If it is about the symmetrical structure leaving forms, it is favorable that the mutually identical pads in the two Truncated cones are used upside down; namely, they can increase in width in the direction of the intermediate zone of the booklet with a larger cross section.

Der Gegenstand der Erfindung ist nachstehend anhand zweier zeichnerisch veranschaulichter Ausführungsbeispiele näher erläutert. Es zeigt

  • Fig. 1 einen mit dem erfindungsgemäßen Heft ausgestatteten Schraubendreher in Seitenansicht, und zwar gemäß dem ersten Ausführungsbeispiel,
  • Fig. 2 den Heftbereich dieses Schraubendrehers im Längsmittenschnitt bei nur partieller Wiedergabe der Schraubendreherklinge,
  • Fig. 3 den Schnitt gemäß Linie III-III in Fig. 2, und zwar in gegenüber Fig. 2 vergrößerter Wiedergabe,
  • Fig. 4 bis 6 dieverse Varianten dieses Heftes,
  • Fig. 7 einen mit dem erfindungsgemäßen Heft ausgestatteten Schraubendreher in Seitenansicht, gemäß dem zweiten Ausführungsbeispiel,
  • Fig. 8 den Heftbereich dieses Schraubendrehers im Längsmittenschnitt,
  • Fig. 9 den Schnitt gemäß Linie IX-IX in Fig. 8,
  • Fig. 10 den Schnitt gemäß Linie X-X in Fig. 8, und zwar in gegenüber Fig. 8 vergrößerter Wiedergabe und
  • Fig. 11 das bedienungsgerecht in einer Handhöhlung einliegende Schraubendreherheft.
The subject matter of the invention is explained in more detail below with the aid of two illustrative exemplary embodiments. It shows
  • 1 is a side view of a screwdriver equipped with the handle according to the invention, specifically according to the first exemplary embodiment,
  • 2 shows the stitching area of this screwdriver in the longitudinal center section with only partial reproduction of the screwdriver blade,
  • 3 shows the section along line III-III in FIG. 2, namely in an enlarged representation compared to FIG. 2,
  • 4 to 6 the reverse variants of this booklet,
  • 7 is a side view of a screwdriver equipped with the handle according to the invention, according to the second exemplary embodiment,
  • 8 shows the stitching area of this screwdriver in the longitudinal center section,
  • 9 shows the section along line IX-IX in FIG. 8,
  • Fig. 10 shows the section along line XX in Fig. 8, in comparison with Fig. 8 enlarged and
  • 11 shows the screwdriver booklet lying in a hand cavity in a user-friendly manner.

Dem dargestellten Heft-Grundkörper K ist eine im Querschnitt hexagonale Schraubendreherklinge 1 einverleibt.A screwdriver blade 1 with a hexagonal cross section is incorporated into the illustrated base body K.

Das Schraubendreherheft weist an seinem klingenseitigen Ende eine Ringkehle 2 auf, welche zum dortigen Ende des Heftes hin in einen Kragen 3 ausläuft, der gemäß Fig. 4 bzw. 7 mehrkantig sein kann.The screwdriver handle has at its blade end an annular groove 2 which ends in the end of the handle in a collar 3 which can be polygonal according to FIGS. 4 and 7.

Der anderenends der Ringkehle 2 ansetzende Heftkörperabschnitt ist in Abwandlung einer Faß-Grundform (vergl. strichpunktierte Linie "F" in Fig. 1 und 7) gestaltet. Er ist dabei so ausgebildet, daß sich beiderseits einer in der quer zur Klinge 1 liegenden Ebene x-x des größten Heft-Grundkörper-Durchmessers D liegenden Ringzone 4 Einzel-Hohlkehlen 5 und 6 erstrecken. Letztere verlaufen in Längsrichtung des Heft-Grundkörpers K. Sie sind in dieser Richtung konkav gemuldet derart, daß die Einzel-Hohlkehlen 5, 6 von der Ringzone 4 des größten Heftkörper-Durchmessers D aus bis hin zu den kleineren Heft-Grundkörper-Durchmessern d 1 und d 2 abfallen. Es kann bezüglich dieser Abschnitte daher praktisch von sich beiderseits des größten Durchmessers erstreckenden kegelstumpfförmig verjüngenden Zonen in Art von Kegelstümpfen gesprochen werden. Letztere liegen mit ihren durchmessergrößeren Basisflächen einander zugekehrt.The other end of the stitching body section, which attaches to the ring groove 2, is designed in a modification of a basic barrel shape (see dash-dot line "F" in FIGS. 1 and 7). It is designed so that on both sides of an annular zone 4 in the plane x-x of the largest handle base body diameter D lying transverse to the blade 1 4 individual grooves 5 and 6 extend. The latter run in the longitudinal direction of the basic booklet body K. They are concave in this direction in such a way that the individual fillets 5, 6 from the ring zone 4 of the largest diameter of the booklet body D to the smaller diameter of the basic booklet body d 1 and d 2 drop. With regard to these sections, one can therefore speak practically of frustoconically tapering zones extending on both sides of the largest diameter in the manner of truncated cones. The latter are facing each other with their larger base areas.

Jeweils benachbarte, in Längsrichtung nebeneinanderliegend verlaufende Einzel-Hohlkehlen 5 und 6 stoßen unter Bildung einer entsprechend ebenfalls konkav verlaufenden Scheitelkante 7 zusammen. Letztere ist konvex quer gerundet.In each case adjacent individual fillets 5 and 6 running alongside one another in the longitudinal direction collide to form a correspondingly concave apex edge 7. The latter is convexly rounded.

Die Einzel-Hohlkehlen 5 und 6 liegen in winkelsymmetrischer Anordnung um die Längsmittelachse y-y des Heft-Grundkörpers K verlaufend. In Umfangsrichtung gesehen, bilden die Einzel-Hohlkehlen 5, 6 einen geradlinigen Grund 8 aus (vergl. Fig. 3 und 10), der aber auch schwach konkav gemuldet sein könnte. Der Winkelabstand zwischen den Einzel-Hohlkehlen beträgt 60° zueinander.The individual fillets 5 and 6 are arranged in an angularly symmetrical arrangement about the longitudinal central axis y-y of the base body K of the booklet. Viewed in the circumferential direction, the individual fillets 5, 6 form a rectilinear base 8 (see FIGS. 3 and 10), which could, however, also be slightly concave. The angular distance between the individual fillets is 60 ° to each other.

Die Randkanten 9 der Einzel-Hohlkehlen 5 und 6 sind sowohl in Querrichtung als auch in Längsrichtung des Heft-Grundkörpers K gerundet. Die Rundungen sind nur so weit vorgenommen, daß lediglich die durch die Kehlung erzeugten Kanten gebrochen werden, im übrigen aber eine vielflächige Grundform hoher Griffigkeit vorliegt.The marginal edges 9 of the individual fillets 5 and 6 are rounded both in the transverse direction and in the longitudinal direction of the base body K. The curves are only made so far that only the edges generated by the fillet are broken, but otherwise there is a multifaceted basic shape with high grip.

Die recht facettenreiche Greiffläche des Heft-Grundkörpers K besitzt harte und weichelastische Griffzonen. So sind die sich verjüngenden Zonen gemäß Fig. 2, also die beiden Kegelstümpfe als weiche Griffzonen W realisiert, d. h. sie sind außenseitig überwiegend aus elastisch nachgiebigem, eindrückbarem Material, wie bspw. Weichkunststoff, Gummi oder dergleichen. Die dazwischenliegende, den größeren Durchmesser D aufweisende Zwischenzone 4 -sie ist kreisringförmig gestaltet- besteht aus hartem, nicht zusammendrückbarem Material, insbesondere Hartkunststoff und bildet mit ihrer freiliegenden Außenoberfläche die harten Grittzonen H. Die auf den verjüngenden Zonen liegenden Einzel-Hohlkehlen 5 bzw. 6 gehen auch in die Hartkunststoff-Zwischenzone 4 über. Auf diese entfällt anteilig etwa ein Drittel bis ein Viertel der Oberfläche.The quite multifaceted gripping surface of the basic magazine body K has hard and soft-elastic grip zones. Thus, the tapered zones according to FIG. 2, that is to say the two truncated cones, are realized as soft grip zones W; H. on the outside they are predominantly made of resilient, compressible material, such as, for example, soft plastic, rubber or the like. The intermediate zone 4, which has the larger diameter D and is of circular design, consists of hard, non-compressible material, in particular hard plastic, and forms the hard grit zones H with its exposed outer surface. The individual fillets 5 and 6 lying on the tapering zones also go into the hard plastic intermediate zone 4. These account for about a third to a quarter of the surface.

Die sich an die klingenseitig sich verjüngende Zone anschließende Ring-Einzel-Hohlkehle 2 ist gemäß Fig. 2 ebenfalls aus dem elastisch nachgiebigen Material. Es handelt sich um einen relativ schwach gemuldeten Ringkehlenabschnitt. Letzterer besitzt einen Hartkunststoffkern 10, welcher das heftgrundkörperseitige, mit abgeplatteten Flügeln 11 ausgestattete Ende der Schraubendreherklinge 1 eingeformt enthält. Solche Flügel lassen sich durch Abplatten des im Querschnitt hexagonalen Schaftes der Klinge 1 erzeugen. Die elastisch nachgiebige Zone tritt demzufolge im schaftfassenden Überlappungsbereich als Mantel M 1 auf (Fig. 2).The ring-individual fillet 2 adjoining the zone tapering on the blade side is likewise made of the elastically flexible material according to FIG. 2. It is a relatively weakly hollowed section of the ring throat. The latter has a hard plastic core 10, which contains the end of the screwdriver blade 1 molded on the base body side and equipped with flattened wings 11. Such wings can be produced by flattening the shaft 1 of the blade 1, which is hexagonal in cross section. The elastically resilient zone consequently occurs in the shaft-covering overlap region as a jacket M 1 (FIG. 2).

Wie Fig. 2 entnehmbar, setzt sich der Hartkunststoffkern 10 praktisch über die gesamte Länge des Heft-Grundkörpers K fort. Dieser Abschnitt ist mit 10' bezeichnet. Demzufolge sind beide sich verjüngenden Abschnitte in Form elastischer Mäntel M 2, M 3 um den Hartkunststoffkern 10/10' gebildet. Die Dicke der Mäntel M 1, M 2, M 3 verläuft im wesentlichen gleichbleibend. Das bringt entsprechend gleichwertige Elastizität für die weichen Bereiche. Die Finger der Haltehand "ertrinken" nicht im elastischen Material. Der Kern führt vielmehr zu einer stabilisierenden Basis.As can be seen in FIG. 2, the hard plastic core 10 continues practically over the entire length of the base body K of the booklet. This section is designated 10 '. As a result, they are both tapered sections in the form of elastic sheaths M 2, M 3 formed around the hard plastic core 10/10 '. The thickness of the shells M 1, M 2, M 3 is essentially constant. This results in equivalent elasticity for the soft areas. The fingers of the holding hand do not "drown" in the elastic material. The core rather leads to a stabilizing basis.

Die klingenabgewandte Stirnfläche des in dieser Richtung sich verjüngenden Abschnitts ist mit einer kalottenförmigen Kuppe 12 aus Hartkunststoff bestückt. Es kann sich hier um ein separat geformtes, nachträglich aufgesetztes Einzelbauteil handeln (wie in Fig. 2 dargestellt) oder natürlich auch eine sofort angeformte Kuppe. Die Mehrteiligkeit empfiehlt sich, wenn eine solche Kuppe 12 aus noch härterem Material bestehen soll, bspw. wenn solche Werkzeughefte für Stemmeisen (Beitel) Verwendung finden sollen. In der mehrteiligen Version tritt ein zentraler Zapfen 13 der Kuppe in eine formentsprechende Ausnehmung 14 des endseitigen Abschnitts des Hartkunststoffkernes 10 ein.The face of the section that tapers away from the blade in this direction is equipped with a dome-shaped tip 12 made of hard plastic. This can be a separately formed, subsequently attached individual component (as shown in FIG. 2) or, of course, an immediately molded tip. The multiple parts are recommended if such a crest 12 is to consist of even harder material, for example if such tool handles for chisels (chisels) are to be used. In the multi-part version, a central pin 13 of the dome enters a corresponding recess 14 in the end section of the hard plastic core 10.

Die ballige Kuppenfläche läuft stufenfrei in die sich verjüngende Zone aus elastischem Material über.The spherical top surface runs smoothly into the tapered zone made of elastic material.

Wie Fig. 2 weiter entnehmbar, ist die grob auf die Oberflächenform des Heft-Grundkörpers abgestimmte Oberfläche des Hartkunststoffkernes 10/10' stark quergerieft bzw. gestuft. Dies führt zu einem innigen Verbund des mantelbildenden elastischen Materiales. Eine solche Struktur des Kernes erweist sich vor allem dann als vorteilhaft, wenn die Mäntel M 1 bis M 3 auf den Kern aufgeformt sind. Um hier einen noch innigeren Verbund der durch die Hartkunststoff-Zwischenzone 4 unterbrochene elastische Mantelung herbeizuführen, stehen die Mäntel M 2 und M 3 aufgrund tunnelartiger Durchbrechungen 15 der Zwischenzone miteinander in Verbindung. Es sind insgesamt vier solcher, winkelgleich angeordneter Durchbrechungen 15 vorgesehen. Die die beiden Mäntel M 2 und M 3 verdeckt miteinander verbindenden Materialbrücken tragen das Bezugszeichen 16. Bezüglich der Durchbrechungen 15 handelt es sich um raumparallel zur Längsmittelachse y-y liegende, abstandsgleich dazu verlaufende Längsbohrungen.As can also be seen in FIG. 2, the surface of the hard plastic core 10/10 'roughly matched to the surface shape of the base body of the booklet is strongly grooved or stepped. This leads to an intimate bond between the jacket-forming elastic material. Such a structure of the core proves to be particularly advantageous when the shells M 1 to M 3 are molded onto the core. In order to bring about an even more intimate bond between the elastic jacket interrupted by the hard plastic intermediate zone 4, the shells M 2 and M 3 are connected to one another due to tunnel-like openings 15 in the intermediate zone. A total of four such openings 15 arranged at the same angle are provided. The two mantles M 2 and M 3 connecting concealed Material bridges are identified by the reference number 16. With regard to the openings 15, there are longitudinal bores lying parallel to the longitudinal central axis yy and spaced at the same distance.

Die Stirnflächen 4' der ringförmigen Zwischenzone 4 weisen Ringnuten 17 auf. Hierdurch kann das angrenzende Weichmaterial praktisch dachförmig unter die Randkante der Hartkunststoff-Ringzone 4 treten. Es kommt zu einer größeren Fugentläche und somit zu einem guten Haftverbund.The end faces 4 'of the annular intermediate zone 4 have annular grooves 17. As a result, the adjacent soft material can step practically roof-shaped under the edge of the hard plastic ring zone 4. There is a larger joint area and thus a good adhesive bond.

Die Einzel-Hohlkehlen 5 steigen vor allem im klingenseitigen Heftkörperbereich leicht an. Bei Einlegen des Endgliedes des Zeigefingers in die Ringkehle 2 findet der Daumen als Gegensteller, d. h. sein Endglied in der Einzel-Hohlkehle 5 eine günstige Stützposition und begünstigt somit ein schnelles und leichtes Drehen (sogenanntes Zwirbeln) des Schraubendrehers, was beim Eindrehen einer Schraube vor dem Festdrehen eine der Hauptfunktionen des Schraubendrehers ist. Dabei kommt die Gelenkfalte zwischen Mittelglied und Endglied genau in die Kammstelle der Ring-Zwischenzone 4 des größten Durchmessers D des Heft-Grundkörpers K zu liegen. So gelagert, erfährt der Daumen seine größte Anlagefläche. Daumenballen und Handwurzel können daher den Heft-Grundkörper K eng umschließen. Die letzteren umgreifenden übrigen Finger finden gleichgünstige Einlagerungspositionen in den Einzel-Hohlkehlen 5 und 6, wobei durch Ausbildung des Heft-Grundkörpers in Abwandlung einer Faß-Grundform den unterschiedlichen Längen der einzelnen Fingerglieder und der Lage der Finger voll Rechnung getragen ist. Die Einzel-Hohlkehlen 5, 6 sowie ihre besondere geometrische Anordnung vermitteln optimale Einlageflächen für die Finger und verhindern dabei die Gefahr eines Abrutschens der Hand vom Heftkörper K. Die insgesamt stark facettierte Oberfläche ermöglicht dabei trotzdem noch eine gewisse Anpassung an unterschiedliche Eindrückpartien, da die elastisch nachgiebigen Griffzonen W die entsprechende Angleichung ermöglichen. Trotzdem läßt sich über die härtere Ringzone, welche den größten Durchmesser besitzt, ein hohes Drehmoment erreichen. Bei den Lösungen gemäß Fig. 4 bis 6 sind die nachgiebigen Materialflächen W und die Hartkunststoff-Bereiche H jeweils in anderer Aufteilung vorgesehen. Das weiche Material erstreckt sich dabei jeweils bis in einen Mehrkant-Endabschnitt E als Wegrollsicherung, wobei dieser so groß ist, daß er bei liegendem Heft durch das Klingengewicht in Berührung zur Unterlage kommt.The individual fillets 5 rise slightly, especially in the area of the stitching body on the blade. When inserting the end member of the index finger into the ring fillet 2, the thumb as a counterpart, ie its end member in the single fillet 5, finds a favorable support position and thus favors a quick and easy turning (so-called twisting) of the screwdriver, which occurs when a screw is screwed in before Tightening is one of the main functions of the screwdriver. The fold of the joint between the middle link and the end link comes to lie exactly in the ridge of the intermediate ring zone 4 of the largest diameter D of the basic body K of the booklet. When stored this way, the thumb experiences its largest contact surface. The ball of the thumb and the wrist can therefore tightly enclose the base body K. The latter encompassing other fingers find equally favorable storage positions in the individual fillets 5 and 6, the different lengths of the individual finger limbs and the position of the fingers being fully taken into account by designing the basic booklet body in a basic barrel shape. The single fillets 5, 6 and their special geometrical arrangement provide optimal insert surfaces for the fingers and prevent the risk of the hand slipping off the staple body K. The overall strongly faceted surface still allows a certain adjustment to different indentation parts, since the elastic resilient grip zones W allow the appropriate adjustment. Still can be said about the harder Ring zone, which has the largest diameter, achieve a high torque. 4 to 6, the resilient material surfaces W and the hard plastic areas H are each provided in a different division. The soft material extends into a polygonal end section E as a roll-away protection, this being so large that it comes into contact with the pad due to the weight of the blade when the booklet is lying down.

Das Schraubendreherheft gemäß dem zweiten Ausführungsbeispiel (Fig. 7 bis 11) ist im Grunde gleichen Aufbaues; die Bezugsziffern sind sinngemäß angewandt, zum Teil ohne textliche Wiederholungen.The screwdriver booklet according to the second embodiment (FIGS. 7 to 11) is basically of the same structure; the reference numbers are used analogously, in some cases without repeated text.

Die zwei benachbart zur Griffzone H härteren Materials liegenden Griffzonen W weicheren Materials sind hier einerseits der Zwischenzone 4 größten Durchmessers D aufgeteilt, also unterbrochen. Dadurch liegen Weichzonen-Felder innerhalb einer praktisch gitterartigen Oberflächenstruktur des harten Heft-Grundkörpers K. Die Unterbrechung liegt in Umfangsrichtung, wodurch in dieser Richtung jeweils weiche und harte Griffzonen W und H miteinander abwechseln. Auch in axialer Richtung ist eine solche Unterteilung denkbar.The two grip zones W of softer material which are adjacent to the grip zone H of harder material are here divided on the one hand into the intermediate zone 4 of the largest diameter D, that is to say interrupted. As a result, soft zone fields lie within a practically lattice-like surface structure of the hard handle base body K. The interruption lies in the circumferential direction, as a result of which soft and hard grip zones W and H alternate with one another in this direction. Such a subdivision is also conceivable in the axial direction.

Die Griffzonen W weicheren Materials bilden Einzel-Hohlkehlen aus, die in die Zwischenzone übergehen.The grip zones W of softer material form single fillets that pass into the intermediate zone.

Die Griffzonen W weicheren Materiales sind als in Vertiefungen 18 des aus härterem Material bestehenden Heft-Grundkörpers K eingesteckte Polster P gestaltet. Entsprechend dem im Zuordnungsbereich hexagonalen Querschnitt dieses Grundkörpers befinden sich sechs winkelgleich verteilte Vertiefungen 18 am Umfang der sich kegelstumpfförmig verjüngenden Partien des Heftes. Die Vertiefungen 18 weisen allseitig hinterschnittene Seitenwände 19 auf. Der Hinterschneidungswinkel liegt bei 20° zum Vertiefungsgrund. Die Seitenwände 19 sind vom dementsprechend trapezförmig gestalteten Fuß des Polsters P hintergriffen, so daß sich bei entprechend formschlüssigem Eingriff eine gute Halterung für die Polster P ergibt.The grip zones W of softer material are designed as pads P which are inserted into depressions 18 of the base body K made of a harder material. Corresponding to the hexagonal cross section of this base body in the area of assignment, there are six recesses 18 distributed at equal angles on the circumference of the portions of the booklet which taper in the shape of a truncated cone. The depressions 18 have undercut side walls 19 on all sides. The undercut angle is 20 ° to the base of the recess. The side walls 19 are engaged behind by the correspondingly trapezoidal foot of the cushion P, so that there is a good support for the cushion P when there is a correspondingly positive engagement.

Neben dieser rein formschlüssigen Halterung unter Nutzung der Elastizität des Materiales kann auch ein Einsetzen unter gewisser Vorspannung erfolgen; außerdem läßt sich zugleich eine Klebeverbindung realisieren. Andererseits kann beim An- bzw. Einspritzen solcher Polster P in die Vertiefungen zugleich eine Heißsiegel-Verbindung genutzt werden. Hierzu würde dem bspw. aus Kautschuk bestehenden Polster P eine dem Heftmaterial entsprechende Kunststoffkomponente beigegeben werden.In addition to this purely form-fitting holder using the elasticity of the material, it can also be inserted under a certain amount of pretension; in addition, an adhesive connection can be realized at the same time. On the other hand, a heat seal connection can be used at the same time when such pads P are injected or injected into the depressions. For this purpose, a plastic component corresponding to the tack material would be added to the cushion P, which is made of rubber, for example.

Die Polster P überragen den Hohlkehlengrund 8 der Einzel-Hohlkehlen 5, 6. Ihre Oberseite ist, in Querrichtung gesehen, konvex ausgewölbt. Die Auswölbung kann sich über die gesamte Querbreite einer Einzel-Hohlkehle erstrecken. Andererseits ist aber auch eine oberseitige, nur randnahe Wölbung denkbar, so daß, wie beim Ausführungsbeispiel bevorzugt, der zwischen den Rand-Querwölbungen verbleibende Flächenbereich der Oberseite raumparallel verläuft zum Grund der Vertiefungen 18.The cushions P protrude above the fillet 8 of the individual fillets 5, 6. Their upper side, when seen in the transverse direction, is convex. The bulge can extend over the entire transverse width of a single fillet. On the other hand, however, an upper-side curvature that is only near the edge is also conceivable, so that, as in the exemplary embodiment, the surface area of the upper side that remains between the transverse transverse curvatures runs parallel to the base of the recesses 18.

Der quergerundete Randbereich der Polster P übergreift lippenartig den Vertiefungsrand 20.The transversely rounded edge region of the pads P overlaps the recess edge 20 like a lip.

In axialer Richtung nehmen die Polster P in Anpassung an den Verlauf der Einzel-Hohlkehlen 5, 6 einen konkaven Kehlenverlauf (vergl. Fig. 8). Der die Einzel-Hohlkehlen 5 überragende Abschnitt der Polster entspricht etwa einem Drittel bis einem Fünftel der Gesamtdicke der Polster.In the axial direction, the cushions P take on a concave fillet shape to match the shape of the individual fillets 5, 6 (see FIG. 8). The section of the cushions projecting beyond the individual fillets 5 corresponds to approximately one third to one fifth of the total thickness of the cushions.

Wie ersichtlich, sind die Polster P untereinander gleichgestaltet (die geringfügigen Abweichungen sind zeichnungsbedingt). Zufolge der sich zur durchmesserverbreiterten Zwischenzone 4 hin verbreiterten Einzelhohlkehlen 5, 6 weisen die Polster P einen entsprechenden, nahezu kongruenten Grundriß auf. Hierdurch sind die in dieser Mittenrichtung weisenden Enden der Polster P etwas breiter. Konsequent wird bei der Bestückung des Heftes daher so vorgegangen, daß die untereinander gleichgestalteten Polster P an den beiden Kegelstümpfen zueinander umgewendet eingesetzt werden.As can be seen, the cushions P are of identical design to one another (the slight deviations are due to the drawing). As a result of the individual fillets 5, 6 widening toward the diameter-widened intermediate zone 4, the cushions P have a corresponding, almost congruent plan. As a result, the ends of the pads P pointing in this central direction are somewhat wider. The assembly of the booklet is consequently carried out in such a way that the mutually identical cushions P on the two truncated cones are used reversed to each other.

Andererseits ist aber auch ein völlig symmetrischer Polsterkörper denkbar.On the other hand, a completely symmetrical cushion body is also conceivable.

Alle in der Beschreibung erwähnten und in der Zeichnung dargestellten neuen Merkmale sind erfindungswesentlich, auch soweit sie in den Ansprüchen nicht ausdrücklich beansprucht sind.All the new features mentioned in the description and shown in the drawing are essential to the invention, even if they are not expressly claimed in the claims.

Claims (17)

1. Heft für Werkzeuge, insbesondere für Schraubendreher, bestehend aus zwei unterschiedlich harten Materialien, von denen das härtere, das Werkzeug tragende Material bei den durch die Betätigungsbelastung auftretenden Kräften umverformbar, das andere Material unter den Belastungskräften jedoch geringe elastische Verformungen zuläßt, wobei die Außenoberfläche des Heftes in Längsrichtung des Heftes hintereinanderliegende Griffzonen härteren und weicheren Materials besitzt, dadurch gekennzeichnet, daß zwei Griftzonen (W) weicheren Materiales benachbart liegen zu einer zwischen ihnen angeordneten Griffzone (H) härteren Materiales.1.Booklet for tools, in particular for screwdrivers, consisting of two materials of different hardness, of which the harder material carrying the tool can be deformed under the forces caused by the actuation load, but the other material under the load forces allows slight elastic deformations, the outer surface of the booklet in the longitudinal direction of the booklet has successive handle zones of harder and softer material, characterized in that two handle zones (W) of softer material lie adjacent to a handle zone (H) of harder material arranged between them. 2. Heft nach Anspruch 1, dadurch gekennzeichnet, daß die Zwischenzone (4) härteren Materiales diejenige größten Durchmessers ist und die dazu benachbarten Griffzone (W) weichen Materiales in Form von sich zu den Enden des Heftes hin verjüngenden Kegelstümpfen gestaltet sind.2. Booklet according to claim 1, characterized in that the intermediate zone (4) of harder material is that of the largest diameter and the adjacent grip zone (W) soft material are designed in the form of tapered cones towards the ends of the booklet. 3. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Griffzonen (W) weicheren Materiales in Umfangsrichtung unterbrochen sind von Zwischenabschnitten (Griffzonen H) härteren Materiales.3. Booklet according to one or more of the preceding claims, characterized in that the grip zones (W) of softer material are interrupted in the circumferential direction by intermediate sections (grip zones H) of harder material. 4. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Griffzonen weicheren Materiales Einzel-Hohlkehlen ausbilden, die bis in die Zwischenzone (4) reichen.4. Booklet according to one or more of the preceding claims, characterized in that the gripping zones of softer material form single fillets which extend into the intermediate zone (4). 5. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die klingenabgewandte Stirnfläche mit einer kalottenförmigen Kuppe (12) aus Hartkunststoff bestückt ist.5. Booklet according to one or more of the preceding claims, characterized in that the end face facing away from the blade is equipped with a spherical cap (12) made of hard plastic. 6. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sich an den sich klingenseitig verjüngenden Abschnitt eine ebenfalls aus elastisch nachgiebigem Material bestehende Ringkehle (2) anschließt.6. Booklet according to one or more of the preceding claims, characterized in that the blade side tapers section adjoins an annular groove (2) which is also made of resilient material. 7. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß beide sich verjüngenden Griffzonen in Form elastischer Mäntel (M 2, M 3) um einen Hartkunststoffkern (10') gebildet sind.7. booklet according to one or more of the preceding claims, characterized in that both tapered grip zones in the form of elastic sheaths (M 2, M 3) are formed around a hard plastic core (10 '). 8. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Mäntel (M 1, M 2, M 3) aufgeformt sind und die letzteren (M 2, M 3) über tunnelartige Durchbrechungen (15) in der Ringzone (4) untereinander verbunden sind.8. Booklet according to one or more of the preceding claims, characterized in that the jackets (M 1, M 2, M 3) are molded on and the latter (M 2, M 3) via tunnel-like openings (15) in the ring zone (4th ) are interconnected. 9. Heft nach einem oder mehreren der vorhergehenden Ansprüche, gekennzeichnet durch Ringnuten (17) in den Stirnflächen (4') der Hartkunststoff-Zwischenzone (4).9. booklet according to one or more of the preceding claims, characterized by annular grooves (17) in the end faces (4 ') of the hard plastic intermediate zone (4). 10. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß bei kreisringförmiger Gestalt der Zwischenzone (4) der klingenseitige Endabschnitt mehrkäntig und außen in Weichmaterial gestaltet ist.10. Booklet according to one or more of the preceding claims, characterized in that with an annular shape of the intermediate zone (4) the blade-side end portion is multi-edged and the outside is made of soft material. 11. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Griffzonen (W) weicheren Materiales als in Vertiefungen (18) des aus härterem Material bestehenden Grundkörpers (K) eingesetzte Polster (P) gestaltet sind.11. Booklet according to one or more of the preceding claims, characterized in that the grip zones (W) softer material than in recesses (18) of the harder material base body (K) inserted pad (P) are designed. 12. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Vertiefungen (18) hinterschnittene Seitenwände (19) besitzen zur Halterung der formschlüssig einsitzenden Polster.12. Booklet according to one or more of the preceding claims, characterized in that the recesses (18) have undercut side walls (19) for holding the positively seated upholstery. 13. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der obere Bereich der Polster (P) den Vertiefungsrand (20) übergreift.13. Booklet according to one or more of the preceding claims, characterized in that the upper region of the cushion (P) engages over the recess edge (20). 14. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Polster (P) eine konvex ausgewölbte Oberseite besitzt.14. Booklet according to one or more of the preceding claims, characterized in that the cushion (P) has a convexly curved upper side. 15. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Polster (P) im Bereich der Einzel- Hohlkehlen (5, 6) eingesetzt sind und eine zum konkaven Kehlenverlauf gestaltete in Querrichtung konvexe Oberseite formen.15. Booklet according to one or more of the preceding claims, characterized in that the cushions (P) are used in the region of the individual fillets (5, 6) and form a convex upper surface which is designed to be concave in the transverse direction. 16. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Polster (P) untereinander gleichgestaltet sind.16. Booklet according to one or more of the preceding claims, characterized in that the cushions (P) are mutually identical. 17. Heft nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die untereinander gleichgestalteten Polster (P) in den beiden Kegelstümpfen zueinander umgewendet eingesetzt sind.17. Booklet according to one or more of the preceding claims, characterized in that the mutually identical pads (P) in the two truncated cones are used inverted to each other.
EP86108371A 1985-07-13 1986-06-19 Handle Expired - Lifetime EP0208942B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86108371T ATE51560T1 (en) 1985-07-13 1986-06-19 NOTEBOOK.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3525163 1985-07-13
DE19853525163 DE3525163A1 (en) 1985-07-13 1985-07-13 TOOL HANDLE, ESPECIALLY FOR SCREWDRIVERS

Publications (3)

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EP0208942A2 true EP0208942A2 (en) 1987-01-21
EP0208942A3 EP0208942A3 (en) 1987-06-03
EP0208942B1 EP0208942B1 (en) 1990-04-04

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US (1) US4739536A (en)
EP (1) EP0208942B1 (en)
AT (1) ATE51560T1 (en)
DE (2) DE3525163A1 (en)

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FR2635290A1 (en) * 1988-08-09 1990-02-16 Dumont Alain HAND GARDEN TOOL COMPRISING A HAND AND VARIOUS MOUNTING TOOLS INTERCHANGEABLE TO THIS HANDLE
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
FR2635998A1 (en) * 1988-09-05 1990-03-09 Tik Tovarna Igel Kobarid Screwdriver handle protected by a non-removable layer of material
EP0418726A2 (en) * 1989-09-22 1991-03-27 Wilkinson Sword Gesellschaft mit beschränkter Haftung Wetshaver
EP0418726A3 (en) * 1989-09-22 1991-07-17 Wilkinson Sword Gesellschaft Mit Beschraenkter Haftung Wetshaver
EP0429408A1 (en) * 1989-11-22 1991-05-29 CALZATURIFICIO DUEGI S.r.l. Improved hand grip for motorcycle handle bars and the like
US5601003A (en) * 1992-06-12 1997-02-11 Wera Werk Hermann Werner Gmbh & Co. Handle for tools, particularly screwdrivers
WO1993025354A1 (en) * 1992-06-12 1993-12-23 Wera Werk Hermann Werner Gmbh & Co. Grip for tools, especially for screwdrivers
EP0580406A1 (en) * 1992-07-21 1994-01-26 JOHNSON & JOHNSON CONSUMER PRODUCTS, INC. Toothbrush having non-slip surface
GB2274615A (en) * 1993-01-29 1994-08-03 Moss Prod Pty Ltd Moulded plastic handle and method of its manufacture
EP0613759A1 (en) * 1993-02-22 1994-09-07 Facom Screw-driver
FR2701882A1 (en) * 1993-02-22 1994-09-02 Facom Screwdriver.
GB2275888A (en) * 1993-03-02 1994-09-14 Marshalltown Trowel Co Handle for a hand tool
GB2275888B (en) * 1993-03-02 1995-06-28 Marshalltown Trowel Co A plastic molded trowel handle having fingerguard and palm grip
EP0635337A2 (en) * 1993-07-23 1995-01-25 Bost Garnache Industries Process for the manufacture of a tool handle and tool supplied with a handle made by this process
FR2707909A1 (en) * 1993-07-23 1995-01-27 Bost Garnache Ind Method of manufacturing a tool handle provided with a handle manufactured by this method.
EP0635337A3 (en) * 1993-07-23 1995-04-12 Bost Garnache Ind Process for the manufacture of a tool handle and tool supplied with a handle made by this process.
EP0662372A1 (en) * 1993-12-21 1995-07-12 Hazet-Werk Hermann Zerver GmbH & Co. KG Grip for hand tool
WO1996019325A1 (en) * 1994-12-20 1996-06-27 The Dow Chemical Company Dual durometer handles
EP0727289A1 (en) * 1995-02-20 1996-08-21 Bost Garnache Industries Material for screwdriver handle, screwdriver and set of screwdrivers manufactured out of that material, and corresponding manufacturing methods
FR2730658A1 (en) * 1995-02-20 1996-08-23 Bost Garnache Ind SCREWDRIVER BLANK, SCREWDRIVER AND RANGE OF SCREWDRIVER PRODUCED FROM SUCH A BLANK, AND METHODS OF MANUFACTURE THEREOF
EP0742083A1 (en) * 1995-04-07 1996-11-13 LEIFHEIT Aktiengesellschaft Handle for kitchen
DE19539200C2 (en) * 1995-10-20 1998-12-24 Holland Letz Felo Werkzeug Tool handle, especially for screwdrivers
DE19539200A1 (en) * 1995-10-20 1997-04-24 Holland Letz Felo Werkzeug Tool handle, especially for screwdriver
FR2741832A1 (en) * 1995-12-01 1997-06-06 Bost Garnache Ind METHOD FOR MANUFACTURING A TOOL HANDLE, AND CORRESPONDING TOOL
WO1997020665A1 (en) * 1995-12-01 1997-06-12 Bost Garnache Industries Method for making a tool handle, and related tool
EP0791437A1 (en) * 1996-02-28 1997-08-27 Kabushiki Kaisha Ohkubo Tightening tool
DE19609330A1 (en) * 1996-03-09 1997-09-11 Holland Letz Felo Werkzeug Tool handle
DE19609330C2 (en) * 1996-03-09 1999-06-24 Holland Letz Felo Werkzeug Plastic handle with improved slip resistance
DE19701406C2 (en) * 1997-01-17 2001-04-26 Hahn Willi Gmbh Turning tool system
WO1998031510A1 (en) * 1997-01-17 1998-07-23 Willi Hahn Gmbh & Co. Kg Turning tool
DE19701406A1 (en) * 1997-01-17 1998-07-23 Hahn Willi Gmbh Rotary tool system
EP1072364A2 (en) * 1999-07-22 2001-01-31 Adolf Würth GmbH & Co. KG Tool handle
EP1072364A3 (en) * 1999-07-22 2001-08-08 Adolf Würth GmbH & Co. KG Tool handle
EP1101573A2 (en) * 1999-11-19 2001-05-23 Adolf Würth GmbH & Co. KG Handle for a hand tool and method for producing same
EP1101573A3 (en) * 1999-11-19 2001-08-16 Adolf Würth GmbH & Co. KG Handle for a hand tool and method for producing same
EP1127529A1 (en) * 2000-02-19 2001-08-29 AEG Hausgeräte GmbH Vacuum cleaner
WO2001066316A1 (en) * 2000-03-04 2001-09-13 Adolf Würth GmbH & Co. KG Handle for a hand tool
FR2856326A1 (en) * 2003-06-17 2004-12-24 In Tech Medical Ancillary handle, has insert extending in internal cavity of gripping part of body to fill internal cavity and projecting from body to form gripping relief by oblong and circular openings, respectively
DE102006037688B4 (en) * 2006-03-16 2008-12-18 Felo-Werkzeugfabrik Holland-Letz Gmbh Handle for a tool
CN101505923B (en) * 2006-08-25 2011-07-20 美国石膏公司 Wallboard taping knife with polymeric hammer
DE202011002212U1 (en) 2011-01-25 2011-04-07 Hidde, Axel R., Dr. Ing. Screwdriver with deformable handle and rotating guide
DE102011009402A1 (en) 2011-01-25 2012-12-20 Axel R. Hidde Screwdriver for fixing and loosening e.g. slotted screw, has guide zone comprising support as fixed bearing, which is delimited by boundary of core and stopper, and shell parts forming detachably supported swivel guide

Also Published As

Publication number Publication date
DE3670028D1 (en) 1990-05-10
ATE51560T1 (en) 1990-04-15
US4739536A (en) 1988-04-26
DE3525163C2 (en) 1987-05-07
EP0208942B1 (en) 1990-04-04
DE3525163A1 (en) 1987-01-22
EP0208942A3 (en) 1987-06-03

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