WO2007048555A1 - Griff für ein ein torsionsmoment übertragendes werkzeug - Google Patents
Griff für ein ein torsionsmoment übertragendes werkzeug Download PDFInfo
- Publication number
- WO2007048555A1 WO2007048555A1 PCT/EP2006/010184 EP2006010184W WO2007048555A1 WO 2007048555 A1 WO2007048555 A1 WO 2007048555A1 EP 2006010184 W EP2006010184 W EP 2006010184W WO 2007048555 A1 WO2007048555 A1 WO 2007048555A1
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- WO
- WIPO (PCT)
- Prior art keywords
- handle
- layer
- outer layer
- handle according
- radial extent
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1671—Making multilayered or multicoloured articles with an insert
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/28—Tools, e.g. cutlery
- B29L2031/283—Hand tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/46—Knobs or handles, push-buttons, grips
- B29L2031/463—Grips, handles
Definitions
- the invention relates to a handle for a tool with which a torsional moment can be transmitted.
- the invention relates to a screwdriver or a screw clamp.
- US-PS 2,871,899 relates to a first further development of a handle for a tool such as a screwdriver made of hard plastic with the aim of improving the feel of the handle.
- a prefabricated handle casing made of soft plastic is mounted on a handle core.
- Grip core and grip jacket are connected to transmit a torsional moment in the circumferential direction positively via profiles with each other.
- the use of the Soft plastic improves the grip of the handle.
- the soft grip coat lifts under heavy loads from the hard grip core and can form wrinkles. This "walking" called lifting of the grip of the handle core leads, especially with continuous use of the known handle to a painful blistering in the area of the user's palm and inflammation causing excessive stress on the hand bone.
- the tool is anchored in a handle core made of hard plastic, the first grip area.
- a handle core is then encapsulated with a handle shell made of soft plastic, see.
- EP 0 627 974 B1 which is also referred to as the second grip area.
- the handle cover made of soft plastic has a certain elasticity and gives a more comfortable grip than a handle, which is made only of hard plastic.
- the soft plastic also has u. U. a higher coefficient of friction than hard plastic. Therefore, with such a "2-component handle" u. U. higher torsional moments are transmitted as a handle of the same size made of hard plastic. This is important for handles for screwdrivers, screw clamps, etc.
- No. 2,871,899 discloses a handle for transmitting a torsional moment to a handle core, in the longitudinal bore of which a shaft of the tool can be pressed in by friction.
- the handle core has a cylindrical outer surface on which a sleeve with an approximately equal inner diameter can be pushed and held there by frictional engagement.
- the material of the sleeve is softer and more dampening than the material of the handle core.
- a cushioning, rubber-like material with a hardness of between 40 and 90 Shore A insert in particular a neoprene rubber with a hardness between 55 and 70 Shore A and a tensile strength between 1500 and 2000 lb / in 2 with an elongation of approximately 350 %.
- an adhesive can additionally be used or an elastic positive engagement in the longitudinal direction can be used.
- the sleeve may be an injection molded component.
- the outer surface of the handle core and the inner surface of the sleeve may be provided with longitudinally extending grooves, projections or teeth.
- DE 694 21 765 T2 (EP 0 635 337 B1) starts from a prior art in which successive layers of plastic materials are formed on the shank of a screwdriver. A central layer in which the shank of the screwdriver is embedded is formed first, and the layer which defines the periphery of the handle is molded onto this central layer or onto intermediate layers. For such molding operations, transfer molding is used with multiple spray heads, usually with two or three such heads. On this basis, the document proposes to embed a shaft of a screwdriver in a plastic handle. A front region of the lateral surface of the handle is formed by a plastic sleeve.
- the plastic sleeve is formed with two coaxial nested parts with annular cross-sections, wherein initially the inner part is produced by an injection molding and on this part the other, the lateral surface forming part is formed by an injection molding.
- the parts For the positive connection of the two parts in the plastic sleeve, the parts have complementary projections and recesses.
- the sleeve is made with a conventional press with two spray heads. In a subsequent method step, a shaft is arranged in such a sleeve to form a radial gap.
- a plastic material is then injected so that it fills the gap in the interior of the sleeve, a crowned end portion of the handle and an end-side jacket portion radially outwardly from an end portion of the sleeve.
- the inner part of the sleeve is formed with a harder plastic than the outer part of the sleeve.
- the handle core is at least partially encased with a deformable elastomeric material.
- the sheath is coated with a thin coating which forms a protective layer and a layer for holding the elastomeric sheath together.
- a gel material can be used.
- the document discloses the arrangement of the deformable envelope, here a gel pad, in a sleeve with a closed enclosure. Such a sleeve should be pushed onto a shovel or a hammer handle to form a handle here.
- the grip By an at least partially deformability of the grip surface should be allowed to give way, the grip, for example, if a user accesses more at a certain point than at another. Even if the user's hand deviates from the standard shape and standard size, a better gripping and handling of the grip can be performed in this way. How large the resilience of the shell is carried out depends on the circumstances of the case and on the type of grip or type of tool that is to be used with this handle.
- the deformability of the handle may, for example, extend over the entire area of the grip element on which a user attacks.
- the deformability is limited to a part of the handle surface, for example to the part on which the user attacks with the palm, while the parts of the handle on which the user attacks with the fingertips, are not deformable .
- a design of the grip surface is useful, for example, in screwdrivers, in which certain areas of the handle surface are designed so that they are intended for fast rotation of the tool with the fingertips.
- the deformability of the grip surface should in this case be limited to a certain depth below the grip surface. Inside a hard grip core should be present, which not only can serve to connect to the shaft, but also to provide a firm grip for the transmission of the movement from the hand to the tool. However, the thickness of the deformable layer is too small to allow adaptation of the handle to the user's hand.
- a 2-component handle for a screwdriver having a handle core made of a hard plastic, for example polypropylene, which is produced in a first form with inserted shaft.
- a soft plastic such as a thermoplastic elastomer with a final hardness of 60-80 Shore A, sheathed.
- a cylindrical shaped part in the axial direction is introduced into a mold, which defines the shape of the dome on the front side, so that the finished dome merges seamlessly into the further lateral surface of the grip shell (see also DE 43 04 965 A1).
- This handle is also a commercially available 2-component handle, which offers no adjustment to the hand of a user.
- DE 35 25 163 C2 discloses a handle for screwdrivers, in which initially a shank with a handle core made of a hard plastic is sheathed. An end, dome-shaped tip made of hard plastic can be molded separately and subsequently connected to the handle core or molded to the handle core. A multipartite is recommended if the dome is still made of a harder material than the Griffkem. In multi-part design, a central pin of the dome can enter into a shape-responsive recess of the handle core.
- the handle core has approximately centrally a radial extension, in the region of which the handle core with the hard plastic forms part of the lateral surface of the handle.
- EP 0 358 883 A1 discloses a handle for a screwdriver in which a front half and a rear half taper continuously from a central area of maximum diameter without formation of undercuts.
- the handle with two mold halves can be produced in an injection molding process with a dividing joint, which can be directed transversely to a longitudinal extent of the screwdriver axis.
- US 3,189,069 discloses a screwdriver with a frictionally interchangeable held in a handle core shaft.
- the handle core has in the region of its lateral surface extending in the axial direction ribs and grooves.
- the grip core has a circumferential groove.
- a grip sheath On the handle core, a grip sheath is pushed in the axial direction, wherein inwardly oriented extensions of the grip sheath engage in the circumferential direction positively in the grooves of the handle core.
- the grip sheath snaps into the circumferential groove with a further extension, as a result of which the grip sheath is secured relative to the grip core.
- partial segments of the handle shell to form a radial contact pressure on the handle core, so that a frictional engagement is formed.
- a softer material is selected than for the grip core, such as rubber.
- handles in which the ergonomic properties should be improved in comparison to conventional handles by an asymmetrical shape design.
- a disadvantage of these known handles is that the handle shell made of soft plastic has only a small thickness and thus is flexible only to a small extent.
- the handles are standardized in certain sizes and shapes, while the users' hands have different sizes and proportions. Therefore optimal ergonomics for such known handles is not guaranteed especially for different hands of different users.
- With handles for screwdrivers is added that with a screw the user's hand, which turns the handle, in the circumferential direction continuously changes their coupling position with the handle. Therefore, the handle can not be formed in an optimal ergonomic basic shape, as is the case with the asymmetric handles according to WO 00/43166 and EP 1 163 088 B1, in which the hand can have in use substantially a single coupling position to the handle ,
- EP 0 538 632 A1 likewise relates to a handle for a pair of pliers, in which a shank of a forceps jaw is covered with a soft plastic over the outer circumference, for example polyvinyl chloride or polyethylene having a hardness between 65-82 Shore A, in particular 66-70 Shore A, while the inner part of circumference is coated with a dimensionally stable hard plastic, in particular cellulose acetate or acrylonitrile-butadiene-styrene copolymers, for example having a hardness in the range of 85-92 Shore A, in particular 86- 90 Shore A. It is still possible that in the region of the inner circumference inserts are provided, which also according to the outer peripheral region made of a soft plastic, so that in the circumferential direction of a hard plastic and a softer plastic are arranged alternately.
- a soft plastic for example polyvinyl chloride or polyethylene having a hardness between 65-82 Shore A, in particular 66-70 Shore A,
- the outer layer is softer than the handle core and relatively thin.
- US 6,370,986 B1 is based on the prior art that hammers usually have a handle core of a hard material such as a metal, a composite material or a synthetic material, which is surrounded to form a handle with a rubber-like, relatively hard sleeve.
- a handle has an inner layer and an outer layer.
- the inner layer and the outer layer are made of the same materials, namely polyvinyl chloride, polypropylene or a thermoplastic elastomer material.
- the outer layer is harder than the inner layer but may also be flexible or cushioning.
- the different stiffnesses of the inner layer and the outer layer are not produced by the materials used, but by the fact that the inner layer is foamed, while the outer layer is not foamed.
- the materials for the inner and outer layers are suitably chosen so that they are chemically compatible and adhesion or joining of the layers is possible.
- the inner layer serves to dampen one on a head of the impact tool applied shock or impact in the power flow to the hand of a user of the impact or impact tool.
- the document describes the problems specific to impact and percussion tools, which are different from those of torsional moment transmission tools.
- the impact tool has a core, for example of metal, which is connected directly and without the interposition of an intermediate layer with the foamed inner layer, so that with soul, inner layer and outer layer, a three-layer structure is selected.
- the soul is rectangular in cross section formed with thickening in the end, so that in simplified terms, a double-T-profile or I-profile is formed.
- the soul extends partially only with the thickening, so the transverse legs of the double-T-profile, while the longitudinal leg of the double-T-profile is interrupted here or formed with gaps. In such spaces, the material of the inner layer can occur.
- the projecting end portions of the double T-profile form vibration receiving elements.
- the outer layer has radially inwardly oriented, circumferentially distributed and longitudinally extending ridges that enter corresponding grooves of the foamed material of the inner layer. These ribs serve to stiffen the handle and control compression of the inner layer against the soul. Furthermore, the outer layer has ribs extending over a partial circumference which are intended to further support the function of the longitudinally oriented ribs.
- the manufacture of the grip area is carried out in a two-stage injection molding process ("two shot”, "double shot” injection molding): In the first process step, the soul is placed in a first mold and foamed with polyvinyl chloride.
- Recesses can be arranged in the core, into which the foamed material enters in the injection molding process, whereby the operative connection between the core and the inner layer can be improved.
- the core with the jacket is inserted through the first layer into a second mold, in which harder polyvinyl chloride is then injected in a second injection molding process step.
- a hardness Shore A between 45 and 65 Shore A, preferably 55 Shore A, is specified, while the hardness of the outer layer is between 66 and 76 Shore A, in particular 71 Shore A. It is advantageous in the chosen two-stage injection molding process that the dimensions of the inner layer and the thickness of the wall of the outer layer can be precisely specified during manufacture.
- a handle for a hammer is known.
- the handle is made as integral foam part.
- a hard core, stem or a soul of the hammer is enclosed by the actual handle body consisting of structural foam.
- the handle body is formed in cross-section of a layer adjacent to the core and an outer layer of relatively high density and an intermediate layer of small thickness.
- This structure of the handle allows elastic cross-sectional deformation of the handle and absorbs shock when working with the hammer.
- the thin layers of different density are formed under the effect of the pressure that arises in the interior of the mass, when a blowing agent is gasified for pore formation and the edge layer of the mass is pressed against the wall of the mold cavity and compacted here.
- US 3,770,033 relates to a handle of a shock or impact tool such as a hammer, a sledgehammer, a hoe, an ax, or the like.
- a body of a handle is formed with a rigid plastic foam having a density in the range of 35-45 lbs / foot 3 and with a central, reinforced handle core.
- the body of the handle may be formed of plastic material, for example polyethylene, polystyrene, polyurethane, polypropylene. Plastic foam is injected into a desired shape around the handle core, with the body of the finished handle being formed by a type of press fit with the handle core.
- DE 101 13 368 A1 discloses a handle for a striking tool in which the shaft is received in a handle made of an elastic material for shock absorption.
- the handle has on the top and bottom in the axial direction oriented, through recesses into which further, distributed over the lateral surface of the handle radially oriented recesses open.
- DE 197 32 421 C2 also relates to an impact tool, in which extend from an end piece above and below the shaft, two hollow fingers in the axial direction, which are covered by an elastic handle cover. Over the fingers, a shock absorption is to be achieved.
- US 2003/0172498 A1 discloses a handle intended to dampen vibrations for use in a striking or impact tool.
- a cushion On a top and bottom of the handle, a cushion is arranged in each case, which consists of an elastomeric sheath and a foam enclosed therein.
- the elastomeric jacket may be a thermoplastic plastic olefin, thermal plastic rubber, thermal plastic polyurethanes, polyvinyl chloride, styrenic block polymers, and a combination of the foregoing materials.
- the material is processed by injection molding. To produce the cushions, the elastomeric material is mixed with a foaming agent in an injection molding machine. The molten mixture is then injected into a mold.
- the colder temperature of the mold is a heat sink during injection, so that the temperature of the material cools faster in the contact area with the mold than in the interior.
- the higher temperature of the mixture is maintained and causes internal foaming so that the foam fills the space available within the skin.
- further expansion of the foam inside the skin may result in stretching of the skin, which may result in a reduction in the wall thickness of the unfoamed layer.
- both the skin and the foam cures.
- the foaming agent may be solid particles, a liquid or a gas.
- the foam-forming agent is endothermic. In the ratio between the elastomeric material and the foam-forming agent, a concentration of 1-10% is used.
- DE 299 04 043 U1 relates to a field of use, which is related to impact and impact tools, namely a machine such as a percussion drill, a grinding device o. ⁇ .
- a handle shell which is for example made of plastic or metal, is provided with a surface coating of polyurethane which may have a different cell structure.
- US 4,023,606 discloses an arrangement of a sheet of ice pick in a tubular sleeve. A foamed plastic material is injected between the sleeve and the shaft.
- US 4,338,270 relates to a handle for a golf club, which is frictionally applied to the shaft.
- the handle is formed with a sleeve made of a flexible foam, which forms a surface skin radially outward.
- the non-cellular or porous outer skin has a thickness of about 0.005 inches to 0.020 inches (0.127 to 0.508 mm).
- the foam area has a hardness of between 55 and 65 Shore A.
- the outer skin serves as protection against abrasion or erosion of the handle in use.
- a cap which has an inner and an outer sleeve, wherein the aforementioned sleeves are connected to each other via radially oriented ribs.
- the inner sleeve serves to support the cap on the shaft.
- a material with a hardness between 70 and 90 Shore A is used.
- Possible materials which can be used for the foam forming the handle are polyurethane in combination with polyol and isocyanate.
- propellant is preferably trichloromonofluoroethane use.
- US 5,355,552 relates to an air-sprung handle for a tennis racket, a hammer, a bicycle o. ⁇ .
- the handle has hollow chambers in which air, possibly under an elevated pressure, is arranged.
- US 4,321,040 discloses a two-piece handle for a medical device in which a deformable gap is provided between a flexible outer sleeve and a handle core.
- the invention has for its object to provide a handle for a torsional torque transmitting tool, in which a good compromise between
- an outer layer is formed with a soft plastic, said outer layer is formed continuously in the circumferential direction and extends continuously in the axial direction or only partially or in several sub-regions in the axial direction.
- an inner layer is bonded radially inwardly cohesively, which consists of a comparatively harder plastic.
- a shaft of the tool is arranged directly or with the interposition of at least one further layer, whereby a relatively rigid connection between the inner layer and the shank of the tool is ensured. It is possible, for example, that the shaft is encased by a handle core, which in turn is then surrounded by the inner layer, possibly even with the interposition of an additional handle core sheath.
- the outer layer may be a lateral surface of the handle. It is also possible that the outer layer of one or more further Layers is at least partially surrounded, with or which then a lateral surface of the handle is formed.
- a problem for known from the prior art embodiments with a layer of soft plastic that on the one hand, a compliance of the handle in the soft layer is desired.
- a radial compliance of the soft plastic layer also causes a torsional stiffness of the handle in the region of the soft plastic layer to be reduced.
- the layer thickness of the soft resilient layer of soft plastic limited to a maximum V 5 of the radius of the handle. If larger radial extensions of the compliant layer are to be used, then, according to the prior art, s.
- the solution according to the invention allows a circumferential formation of the outer layer of soft plastic in the circumferential direction.
- the outer layer of soft plastic may have a maximum radial extension in a partial circumferential area that is at least 30% (in particular according to variant A at least 40%, variant B at least 45%, variant C at least 50% or variant D) at least 60%) of the radius of the handle.
- the layer thickness of the outer layer of soft plastic in the circumferential direction is not constant. Rather, the outer layer of soft plastic has a circumferentially variable radial extent. At least one partial circumferential region is provided, in which the outer layer has a minimum radial extent which is at most 60% of the maximum radial extent, which also applies to the further embodiments according to variants A to D. can apply. In particular, for all embodiments, the minimum radial extent may be only a maximum of half, 40% or 30% of the maximum radial extent.
- This embodiment is based on the first recognition that, as previously explained, by the variable thickness of the outer layer of soft plastic a
- Layer thickness of the outer layer for shear deformation available, so that a torsionally rigid connection between the outer layer and the inner layer is given.
- the lateral surface of the layers is increased by a variable layer thickness, whereby on the one hand a cohesive connection between adjacent layers
- Layers can be improved and on the other hand, the resulting in the transition region of adjacent layers shear stiffness can be increased.
- the circumferentially varying radial extent may alternatively or cumulatively accompany a circumferentially variable outer radius of the outer layer and / or a circumferentially variable inner radius of the outer layer, wherein the radial extent of the outer layer is due to a circumferentially variable radial extent of an outer contour the inner layer and / or any variable radial extent of an inner contour of a possible cladding layer results.
- the inner layer directly forms the handle core, which stiffly and permanently receives the shaft.
- the hardness of the inner layer is in the range between 25 and 90 Shore A, preferably 30 to 85 Shore A, in particular 30 to 60 Shore A.
- a Griffkernummantelung be formed, which is a handle core at least partially encased and ensures a good and permanent transmission of forces and moments between the outer layer and the handle core.
- the outer layer forms a lateral surface of the handle, has a hardness for the outer layer between 25 and 75 Shore A, in particular 35 to 55 Shore A, as a good compromise for
- the invention proposes a further embodiment in which the outer layer is at least partially covered with a cladding layer of a hard plastic, with a lateral surface of the Handle is formed.
- the layer thickness of the cladding layer and the stiffness of the material thereof are predetermined such that the cladding layer is deformable by forces applied by the user's hand to the handle in the radial direction, but on the other hand a stable, hard surface of the handle is given.
- a relatively soft plastic here with a hardness between 10 and 40 Shore A, preferably 15 to 35 Shore A, are used, which thus only elastic support in Radial direction, but not a provision of a stable lateral surface must serve.
- the hardness of a cladding layer in such a case can be increased to between 25 to 90 Shore A, preferably 30 to 85 Shore A, in particular 30 to 60 Shore A.
- ribs or extensions made of hard plastic or a hard plastic are provided in the handle in a partial circumferential area with minimal radial extent, which are in particular supported by the inner layer and oriented radially outwards and / or are supported by the cladding layer and extend radially inward.
- Such ribs or extensions can also produce sudden changes in the radial extent of the outer layer in the circumferential direction.
- two (or more) partial circumferential regions are provided with reduced radial extent of the outer layer.
- Anisotropies of the stiffness behavior of the handle can be selectively generated by the partial circumferential regions, wherein the two peripheral regions can be distributed appropriately over the circumference, so that a handle in a defined position can adapt particularly well to a user's hand. For example, it has been found that greater forces can be applied in the region of the fingers to the lateral surface of a handle of a screwdriver than in a front region of the hand-grip.
- the two partial circumferential areas with reduced radial extent of the outer layer are arranged approximately opposite one another in the circumferential direction.
- the handle is provided with such "preferred directions", it may be advantageous if these preferred directions are made apparent to the user of the handle. This can be done for example by an asymmetrical shaping of the outer lateral surface of the handle. It is also possible to use an "eye" or a transverse bore in the end region of the handle opposite the shaft, the eye preferably having its opening in partial circumferential regions in which the minimum radial extent of the outer layer is given.
- the outer layer is not porous, for a further embodiment of the invention, the outer layer is porous and made, for example, using a propellant.
- a density of the soft plastic for the outer layer is between 0.2 and 0.8 g / cm 3 .
- the harder inner layer is formed with the same material, but then with reduced or no porosity.
- variable extent of the outer layer is determined by the shape of the outer contour of the inner layer, the inner layer, at least in a partial cross-section, a
- a) have a round cross section with at least one radially outwardly extending rib
- c) have a star-shaped outer cross-sectional contour, wherein, for example, the tips of the star each form a kind of rib with radially outwardly decreasing extent in the circumferential direction.
- the outer layer has a substantially constant thickness at least in the areas of the minimum radial extension in the axial direction, so that the elastic radial behavior in the region of the minimum radial extent in the longitudinal direction of the handle in the region of the lateral surface approximately constant is.
- a constant thickness may be provided, for example, by ribs of the inner layer varying in accordance with the outer contour of the handle Having outer contour, so that the outer contour of the ribs have an approximately constant distance from the lateral surface of the handle, which is then "bridged" by the outer layer.
- thermoplastic elastomer a thermoplastic polyolefin, polypropylene, EPDM rubber, PVC or styrene block copolymer are used as inexpensive, but reliable materials with the desired mechanical properties for the outer layer.
- the maximum extent of the outer layer may be greater than 3.5 or 4 mm, in particular greater than 5, 6 or 8 mm. This area is particularly arranged there on the handle, where a middle finger and ring finger and the palm rest mainly on the handle.
- the outer layer has a filler.
- Possible fillers are granules such as cork granules, cork flour, wood flour or a fibrous filler such as glass fibers.
- the lateral surface of the handle is not completely smooth, but has an improved skid resistance, which, for example, be increased by the tool transferable Torsionsmomente can.
- cork flour or wood flour have the advantage that a moisture of the hand can be absorbed, as it can arise when working with a tool.
- the slip resistance can also be further improved.
- a possible proportion by weight of a filler in the total weight of the outer layer is, for example, less than 50%, in particular between 5% and 30%.
- a lateral surface of the handle is formed with a film, the material fit to an inner layer, such as the outer layer, connected is.
- a production of such a handle is for example possible by inserting a foil into a mold.
- the film is materially connected with a filling of the mold.
- the physical properties and a surface of the film can be selected and designed so that an improved outer surface of the handle results, for example, is particularly oil or chemical resistant or has a non-slip surface.
- Figs. 1 and 2 show an embodiment of a handle in a longitudinal section and a
- Handle core with two opposite ribs forms Handle core with two opposite ribs forms.
- Figs. 3 and 4 show an embodiment of a handle in a longitudinal section and a cross section with an outer soft layer, which is the lateral surface of the handle forms and an inner harder layer that forms a handle core with approximately rectangular cross-section.
- FIGS. 5 and 6 show an embodiment of a handle in a longitudinal section and a cross section with an outer soft layer which forms the lateral surface of the handle and an inner harder layer, which is a basically round
- Fig. 7 shows an embodiment of a handle in a cross-section with an outer soft layer, which forms the outer surface of the handle and an inner harder layer, which forms a handle core with a star-shaped outer contour.
- Fig. 8 shows in a kind of development of the outer layer, the radial extent of the outer layer as a function of a circumferential angle ⁇ .
- Figs. 9 and 10 show an embodiment of a handle in a longitudinal section and a
- Cross section with an outer soft layer, which is covered by a cladding layer of a harder material, and an inner harder layer, which has a basically round handle core with two opposite
- 11 and 12 show an embodiment of a handle in a longitudinal section and a
- Figs. 13 and 14 show an embodiment of a handle in a longitudinal section and a
- FIG. 15 shows an embodiment of a handle in a cross section with an outer soft layer, which is covered by a sheath layer of a harder material, and an inner harder layer which forms a Griffkern- sheath, in which a grip core with star-shaped outer contour was recorded is.
- 16 and 17 show an embodiment of a handle in a longitudinal section and a
- Layer which forms a handle core sheath, in the material-locking a basically round handle core is taken with six evenly distributed over the circumference ribs.
- Figs. 18 and 21 show embodiments of a handle in a longitudinal section, each one
- Fig. 22 shows an embodiment of a handle in a cross-section, which substantially corresponds to the embodiment shown in Figure 17, but with ribs of different radial dimensions.
- an outer layer designates a layer of a handle, whose outer surface forms the surface of the handle acted on by a user's hand, while an inner layer connects radially inwardly to the outer layer and encases a handle core made of hard plastic and a shaft jacketed. It is also possible that the outer layer is located inside the handle and, for example is encased by a cladding layer and / or at least one inner layer, Griffkernummantelung or the like between the inner layer and the handle core is interposed.
- the invention relates to a handle 1 for a tool in which a shank 2 of a functional part of the tool is received radially inwardly and can apply forces to a user of the tool in the region of its radially outer lateral surface. These are forces in the direction of a longitudinal axis 3 -3, transverse to this, torsional moments around the
- the handle according to the invention finds particular use for a tool in which the handle
- Torsionsmomente about the longitudinal axis 3-3 must be transmitted as a main or secondary purpose of the tool, for example, a screwdriver.
- shock or impact tools listed at the beginning:
- the impact tool When operating an impact tool, the impact tool is accelerated and impulsed by the user in a retrieval movement. For such an acceleration of the impact tool, the rigidity of a striking tool is irrelevant, so that the impact tool can be both adequately accelerated for a soft grip as for a hard grip and fed to the object to be hammered. With the above pulse, the impact tool hits the object to be hit, whereby the momentum of the impact object is transmitted to the object to be hit.
- the impulse exerted on the object to be hit is independent of whether the impact tool is held firmly in the impact, is pressed onto the object or can "freely swing back".
- a handle according to the invention has radially inside a shaft 2, which may have a non-circular transmission cross-section 4 or from a round cross-section outgoing ribs.
- the shaft 2 is partially or completely encased by a handle core 6, whereby parts of the transmission cross section 4 or of the ribs of the shaft can extend radially outwards through the grip core 6.
- the handle core 6 is preferably also formed out of round in the region of its outer surface with a transfer section 7 or ribs 8.
- the handle core 6 may be surrounded by a Griffkernummantelung 9 partially or completely, which also extend portions of the transmission cross sections 7 or ribs 8 through the Griffkernummantelung 9 can.
- a soft layer 10 at least partially surrounding the handle core sheath 9, which may be at least partially encased by an outer layer 11.
- Griffkernummantelung 9, soft layer 10 and / or outer layer 11 may have ribs, projections, extensions or webs (hereinafter ribs 8,13), which extend only partially in an adjacent layer (10, 11, 27) and in the area which Radial extent of an adjacent layer is reduced.
- the ribs 13 can be oriented both radially inwardly and radially outwardly by a layer carrying the ribs.
- All of the aforementioned components of a handle 1 can be used alternatively or cumulatively. Also, an interposition of additional additional layers, loose particles, a gel or a fluid is also possible.
- the handle 1 may have additional components such as an eye 15 or transverse hole, in particular in the functional part facing away from the end portion of the handle 1, wherein the eye 15 extends transversely to the longitudinal axis 3-3 through the end portion.
- additional components such as an eye 15 or transverse hole, in particular in the functional part facing away from the end portion of the handle 1, wherein the eye 15 extends transversely to the longitudinal axis 3-3 through the end portion.
- the tool can be hung or an auxiliary element in the handle 1 are inserted.
- one shaft of another Screwdriver can be performed by the eye 15, on the then an additional operating torque can be exerted on the handle 1.
- the components of the handle 1 can be bonded to one another in a material-locking manner. Also conceivable is the use of an exchangeable functional part with a handle, in which the shaft 2 of the functional part, in particular with surrounding layers, is interchangeable with other, radially outer components of the handle. Especially in the
- the handle 1 may have additional holding devices, s.
- additional holding devices s.
- Another optional component of a handle is a dome or cap in the end area of the handle, over the bumps or blows on the
- Handle can be applied.
- the "outer layer” 27 can be any one of the layers 9 (10) or [11], while the “inner layer” 28 is a layer which is attached to the aforementioned layer, namely the handle core 6 (grip core sheath 9). or [layer 10].
- any constant or variable radial extent is possible, which results from the difference of the adjacent contours of the adjacent layers.
- the radial extension can change in the axial course over the length of the handle and eventually become zero towards the front end of the handle.
- the radial extent depends on the absolute diameter of the handle.
- Layers or components arranged radially on the outside of the outer layer and / or radially inwardly of the inner layer can be positively and materially frictionally engaged with one another and / or a latching or locking connection can be connected to one another and to the inner and outer layers.
- the layer 10 forms the outer layer 27.
- the grip core 6 made of a harder plastic or a hard plastic is arranged directly, which supports the inner Layer 28 forms.
- the soft layer 10 is partially or completely encased in the longitudinal section externally by a harder outer layer 11 and internally by a grip core jacket 9.
- the layer 10 forms the outer layer 27, the Griffkemummantelung 9, the inner layer 28 and the outer layer 11, a cladding layer 35.
- Corresponding embodiments are shown in Figures 11 to 22.
- a shaft 2 may be formed, for example, with fiber-reinforced plastic, metal, steel or wood.
- a hard plastic for the handle core 6 is used, while for the Griffkemummantelung 9 and the outer layer 11, a first soft material and the soft layer 10, a second soft material is used wherein the two soft materials have different hardness, namely, the first material and the layer (s) formed therewith are harder than the second material and the layer (s) formed therewith.
- Possible materials include (but are not limited to) a thermoplastic elastomer (TPE), a thermoplastic polyurethane (TPU), a thermoplastic polyolefin (TPO), polypropylene, EPDM rubber, PVC or styrene block copolymer insert.
- TPE thermoplastic elastomer
- TPU thermoplastic polyurethane
- TPO thermoplastic polyolefin
- polypropylene EPDM rubber
- PVC styrene block copolymer insert.
- the materials mentioned have a porous, but preferably a closed, non-porous structure.
- a hardness of an inserted plastic, in particular for a soft layer 10 or outer layer 27, is for example 10 to 40 Shore A.
- a grip core sheath 9 and / or an outer layer 11 is in particular a plastic insert having a hardness between 30 and 105 Shore A, preferably between 30 to 85 Shore A.
- the handle core 6 is preferably made of hard plastic, for example polypropylene with a ball hardness of 45-65 N / mm 2 , It is also possible that at least one layer has a filler. Possible fillers are granules such as cork granules, cork flour, wood flour or a fibrous filler such as glass fibers. The proportion by weight of the filler in the total weight of the layer involved or of the component of the handle involved is, for example, less than 50%, in particular between 5 and 30%.
- layers or components of different stiffness may be formed with the same materials, but different porosities.
- a softer layer or a softer component is porous, while a harder layer or a harder component is non-porous.
- the handle is produced successively by insertion into radially increasing mold cavities, into which a material for one layer is then injected in each case.
- the shaft 2 is inserted into a first shape whose inner contour corresponds to the contour of the handle core 6, possibly with a transmission cross section 7 and ribs 8. Following this, a material can be injected into the first mold.
- the shaft 2 sheathed with the handle core 6 can be inserted into further shapes with which the handle 1 is then created successively radially outward optionally with further layers 9, 10, 11.
- At least one layer is produced by inserting cores into a mold, which are then encapsulated in the mold with a material. If the cores are removed after curing of the material, a resulting, partially circumferentially extending or circumferentially circumferential "chamber" may occur further material to be injected. For example, a softer material is injected into the chambers, which then forms the soft layer 10.
- the handle 1 is manufactured with at least two components, wherein a radially outwardly arranged in the handle 1 component is made with an inner recess, in the region of which a joining of the component with a radially inner component is possible.
- a radially outwardly arranged in the handle 1 component is made with an inner recess, in the region of which a joining of the component with a radially inner component is possible.
- Not cohesive connection carried a transfer of a torsional moment between the components.
- a security of the components can be done after a joining of the components via a frictional or positive connection, an elastic locking connection or a locking connection.
- a sheathed with a hardened handle core 6 shaft 2 is inserted into a mold which is divided in a central plane which passes through the longitudinal axis 3-3.
- the inner contour of the mold corresponds to the shape of the lateral surface of the finished handle 1.
- a first material is first injected into the mold and the chamber. The volume of the injected first material is smaller than that of the chamber.
- the first material is sprayed onto the lateral surface of the handle core 6 and / or deflected in the direction of the wall delimiting the mold cavity and cooled, so that adjacent the handle core 6 and / or in the region of the wall delimiting the mold cavity, the first material hardens faster or more viscous is considered in other parts.
- a second material is injected into the chamber and into, under or through the first material via an inlet opening. From the inlet opening, the second material flows into or under the interior of the first material.
- the first material is displaced spatially in the direction of the longitudinal axis 3 and radially to the wall of the mold cavity, wherein the second material can be sheathed both radially outwardly and radially inwardly and in both axial directions of the first material.
- the second material urges the first material radially outward so that it forms the outer layer. Accordingly, there is a movement or displacement of the first material in the direction of the handle core 6, so that here the Griffkemummantelung 9 formed from the first material becomes.
- a production of the second designs is possible with such a manufacturing method.
- Foaming for a possible porous formation is preferably carried out by means of a blowing agent or by incorporating nitrogen into a melt of a plastic processed by the injection molding process.
- the layers 9, 10, 11 may be made of plastic of one type and result in a manufacture of the handle in such an integral foam process. In this case, the layers 9 and 11 form under the action of the resulting upon action of a blowing agent internal pressure as dense, non or hardly porous layers with a higher strength than the intermediate layer 10, which remains porous.
- a shaft 2 is encased by a handle core 6, which has end regions 17, 18 and a central region 26.
- the middle region 26 has a substantially cylindrical lateral surface.
- ribs 8, 13 which are arranged in the illustrated cross section in the 12 o'clock position and 6 o'clock position.
- the ribs 8 are continuously encased by a soft layer 10 in the circumferential direction.
- the ribs 8 extend into the soft layer 10 such that their radial extent between the outer end face of the ribs is reduced to approximately 1/3.
- the maximum radial extent 38 of the layer 10 away from the ribs 8 is about 30 to 60% of a radius 31 of the handle 1 in the region of its thickest point.
- the soft layer forms the outer layer 27, while the handle core 6 forms the inner layer 28.
- the lateral surface 14 of the handle 1 may be hexagonal with rounded corners.
- the outer contour of the ribs 8 extends approximately parallel to the outer contour of the lateral surface 14, so that the radial distance between the radially outer end face of the ribs 8 and the lateral surface 14 of the handle 1 in the direction the longitudinal axis 3-3 is approximately constant.
- the ribs 8 extend only over an axial portion of the outer layer 27, so that in a front region of the handle 1, the outer layer 27 is connected circumferentially immediately cohesively to the handle core 6.
- the ribs 8 can, as sketched in FIG. 1, be arranged opposite one another or offset in the circumferential direction. In the illustration, the rib has a rectangular cross-section. Alternatively, the rib may also have a different shape, be slightly conical, rounded at the upper edge or in the thickness also lower.
- the outer dimension of the ribs 8 from the longitudinal axis 3-3 is designated by reference numeral 30
- the radius of the lateral surface 14 of the handle 1 in the peripheral region of the rib 8 is designated by reference numeral 31.
- the ratio of the radius 30 of the rib 8 to the radius 31 of the lateral surface 14 is at least 0.5.
- the density of the plastic for the outer layer 27 when formed as a porous layer is preferably between 0.2 and 0.8 g / ccm.
- An initial hardness of the plastic used for the outer layer 27 is in particular between 30 and 96 Shore A or 30 to 60 Shore D. Preferably, the hardness is in the range between 25 and 75 Shore A, for example 35 to 55 Shore A.
- the choice of this radial extent depends on the handle size: with a small handle, the radial extent is smaller than with a larger handle
- Figures 3 and 4 show a variant embodiment, for which the handle core 6 and thus the inner layer 28 is formed with a rectangular cross-section, here with rounded corners.
- the maximum radial extent 38 of the outer layer 27 is greater than for the embodiment shown in Figures 1 and 2, in particular between 60 and 80% of the radius of the handle on the while the minimum extension 39 has a maximum of 60% or half of the maximum extension 38.
- the shank 2 is sheathed with a grip core 6 which has end regions 17, 18, wherein the end region 18 forms a cap which is part of the lateral surface 17 of the grip 1. Furthermore, the handle core 6 has four circumferentially uniformly distributed ribs which extend approximately over the longitudinal extent 29.
- the handle core 6 forms the inner layer 28.
- a soft layer 10, which forms the lateral surface 14, is at the same time the outer layer 27.
- the outer layer 27 surrounds the handle core 6 in the middle region 26 and is enclosed in the axial direction by the end ranges 17, 18.
- the ratio of the largest diameter 32 of the handle 1 to the diameter 31 of the circular portion of the lateral surface of the handle core 6 is preferably greater than 1, 4, in particular greater than 1, 8, wherein the radial extent of the outer layer 27 is preferably greater than 4 mm, in particular greater than 6 mm.
- the thickness of the outer layer 27 decreases to the front end of the handle and thus also its deformability.
- the outer layer 27 can be made with a closed structure or with a porous structure, wherein the initial hardness of the plastic used can be between 45 and 96 Shore A and the density of the porous structure between 0.2 g / ccm and 0.9 g / cc.
- the maximum radial extent 38 of the outer layer is about 50 to 65% of the radius of the handle, while the minimum radial extent 39 is about 35 to 50%.
- the inner layer 28, which is formed with the handle core 6, is formed in a star shape with six points, so that the outer layer 27 in the positions 12 o'clock, 2 o'clock, 4 o'clock, 6 Clock, 8 o'clock, 10 o'clock minimum radial extent 39 and in the circumferential direction centrally between them arranged maximum radial extent 38 has.
- Fig. 8 possible radial extensions of the outer layer 27 are shown as a function of the circumferential angle ⁇ (for the definition of the circumferential angle s, for example, Fig. 12).
- the course 36 may correspond, for example, to an embodiment according to FIG. 2 or 4, while a course 37 may correspond to the embodiment according to FIG. 7.
- the radial extension oscillates according to curve 37 between maximum radial extensions 38 and minimum radial extensions 39, wherein the distance of the maxima 38 and minima 39 can be influenced by the extension of the points of the star.
- the embodiment shown in FIGS. 9 and 10 has a handle core 6 with associated, opposite ribs 8, 13, which are directly covered with a soft layer 10.
- the soft layer 10 is encased radially outwardly of the outer layer 11.
- the thickness of the outer layer 11 is preferably for such a configuration, depending on the handle size in the range between 2 and 7 mm.
- the maximum radial extent 39 of the outer layer 27 formed with the soft layer 10 is in the range between 30% and 50% of the radius of the handle 1, while the minimum radial extent 39 is approximately half of the maximum radial extent 38.
- the hardness of the layer 10 is between 10 and 40 Shore A, preferably 15 to 35 Shore A, while the hardness of the layer 11 is between 25 and 75 Shore A, in particular 35 to 55 Shore A.
- the handle in the embodiment shown in FIGS. 11 and 12 is constructed as follows: a shaft 2 is encased by a handle core 6 having end portions 17, 18 and a central portion 26.
- the central region 26 has a substantially cylindrical lateral surface which is encased by a grip core jacket 9.
- From the handle core 6 extend, integrally formed by this, ribs 8 through the Griffkemummantelung 9 therethrough, for the cross section shown in Fig. 12, the ribs 8 are arranged in the 12 o'clock position and 6 o'clock position.
- the ribs 8 and the Griffkemummantelung 9 are continuously encased by a soft layer 10 in the circumferential direction, wherein the soft layer 10 in turn by an outer layer 11 which is circumferentially formed circumferentially and forms the lateral surface 14, is sheathed.
- the soft layer 10 forms an outer layer 27 of a soft plastic, on the outside of the outer layer 11, an outer harder cladding layer 35 is bonded cohesively.
- An additional layer 9 of the material of the cladding layer 35 forms an inner layer 28 in the form of a Griffkemummantelung 9.
- ribs 8 are attached in one piece. In the longitudinal section shown in Fig.
- the outer contour of the ribs 8 is approximately parallel to the outer contour of the lateral surface 14, so that the radial extent of the outer layer 27 of the handle 1 in the direction of the longitudinal axis 3-3 is approximately constant ,
- the ribs 8 extend only over an axial portion of the outer layer 27, so that in a front region of the handle 1, the outer layer 27 is connected circumferentially immediately cohesively to the Griffkemum- coat 9.
- the ribs 8 can, as sketched in FIG. 11, be arranged opposite to one another or arranged differently in a manner not shown in the circumferential direction.
- the ribs 8 have a rectangular cross-section, which can deviate also have any other shape, such as slightly tapering towards the outside, rounded at the top edge or even smaller in thickness.
- the use of a plastic having a hardness of 30 to 85 Shore A, preferably 40 to 60 Shore A has proven to be useful - for the soft layer 10 or outer layer 27 has a hardness of 10 to 55 Shore A, preferably from 15 to 30 Shore A.
- Plastics of the same type or of different types can be used, as long as they make a good material connection with one another.
- U. U. is also responsible for a good material connection between an upper edge of the rib 8 and the outer layer 27 care.
- FIGS. 13 and 14 show a further embodiment of a handle 1, in which the handle core 6 without ribs 8 is formed in the case of an otherwise corresponding embodiment of FIGS. 11 and 12. Instead, the handle core 6 is formed with an approximately rectangular cross-section, which is completely surrounded in the circumferential direction of the handle core sheath 9 at least in a partial area. Such a rectangular cross section of the handle core 6 extends approximately over the longitudinal extent 29, preferably with a varying ratio of the length to the width of the rectangle or decreasing length of the rectangle.
- the outer layer 27 formed with the soft layer 10 is star-shaped with six points corresponding to such outer contour of the handle core 6 and the handle core jacket 9 forming the inner layer 28. educated.
- the outer layer 27 has a minimum radial extent in the positions 12 o'clock, 2 o'clock, 4 o'clock, 6 o'clock, 8 o'clock, 10 o'clock.
- 16 and 17 show an embodiment of a handle in which a handle core 6 is formed with end portions 17, 18, wherein the end portion 18 forms a cap for applying axial forces by a user's hand.
- the handle core 6 has six uniformly distributed over the circumference ribs 13.
- the inner leg of the U which forms the Griffkernummantelung 9 is shorter formed as the outer, the lateral surface 14 forming legs, which is in particular formed approximately with the longitudinal extent 29.
- the Griffkernummantelung 9 is penetrated by the ribs 8, 13.
- a soft layer 10 is arranged, which forms an outer layer 27.
- the handle core 6 is formed of a hard plastic defining a first stiffness. With the end portions 17 and 18, during manufacturing of the handle 1, the handle core 6 seals against the wall of a mold cavity when the handle core jacket 9 (inner layer 28) and the soft layer 10 (outer layer 27) are made by spraying onto the handle core 6th
- a manufacture of the handle 1 according to FIG. 18 takes place in such a way that first the handle core 6 is manufactured in a first injection mold, the shaft 2 being cast into the handle core 6. In a second injection mold, the handle core jacket 9, the soft layer 10 and the outer layer 11 are sprayed onto the inserted into the mold handle core 6 according to the described sandwich method.
- the first material forming the handle core jacket 9 (inner layer 28), the web 42 and the outer layer 11 is injected into the mold, and immediately thereafter before curing, the plastic material forming the soft layer 10 (outer layer 27), the second material, is injected ,
- the second material displaces the first injected, still (partially) liquid first material to the wall of the mold cavity or to the wall of the handle core 6, whereby the handle core sheath 9, the web 42 and the outer layer 11 are formed.
- the outer layer 11 can form a dense layer.
- the thickness of this layer can be controlled by the process flow, for example, the ratio and dosage amounts of the materials and / or the parameters of the injection molding process.
- the thickness of the layer is adjusted in each case so that a radial deformability of the outer layer 11 and the soft layer 10 under the action of a force by the handle enclosing the hand 1 is not diminished when working, but on the other hand a good transmission of an initiated torsional moment is ensured as it is z. B. when using such a handle for a screwdriver is required.
- a manufacture of such a handle 1 may alternatively by separate production
- a central, running in the direction of the longitudinal axis 3-3 cavity formed, for example.
- a corresponding mold core which may have a non-circular cross-section for producing a positive connection with a corresponding outer surface of the handle core 6, for example Receiving ribs 8, 13.
- the cavity may have a hexagonal cross-section or a round cross-section with molded, longitudinally extending pockets.
- the handle core casing 9 of higher hardness plastic material is formed, which consists of the first material.
- the handle core 6 has a corresponding cross section, ie in particular also a hexagonal cross section or a round cross section with radially mounted ribs 8, 13, which engage in the pockets of the first component.
- a torsional moment can be transmitted.
- the dimensions and tolerances of the two cross sections are coordinated so that the first component can be pushed tight fit on the handle core 6.
- the two components can be additionally glued together.
- the end portion 43 has circumferentially distributed lugs 44 or a circumferential approach, which is received in a locking connection in a form-fitting manner in an associated groove 45 of the handle core 6.
- Such a snap connection with the lugs 44 and the groove 45 leads to an (interchangeable) axial securing.
- a snap connection may also be formed in another way or an axial securing of another type may be provided.
- the lateral surface 14 is formed with the radially enlarged end regions 17, 18 of the handle core 6.
- an elastic part of the handle 1 is arranged, which is provided with a soft layer 10 (outer layer 27) and a jacket of the soft layer 10 closed in longitudinal section with the handle core jacket 9 (inner layer 28) and the outer layer 11 (jacket layer 35). is formed.
- This elastic grip part can either be manufactured first as a separate injection-molded part - also in a sandwich process - and be plugged under elastic expansion from the rear over the end region 18 onto the grip core 6 or the grip part is sprayed directly onto the grip core 6 in a sandwich process, as already described above Embodiments has been described.
- the handle core 6 is not formed continuously to the end of the handle 1 in the handle 1. Rather, the end region 18 of the handle core 6 is likewise encased by the handle core sheath 9 (inner layer 28), the soft layer 10 (outer layer 27) and the outer layer 11 (handle core sheath 35), so that the outer layer 11 also the end-side lateral surface or the cap forms.
- the handle core 6 is performed without radial thickening in the end portion 18 to the end portion of the handle 1.
- FIG. 22 shows an embodiment substantially corresponding to FIG. 17, for which, however, the ribs 8, 13 are formed with different radial extensions, so that different minimum radial extensions result.
- the invention relates not only handles for different tools, but also tool sets with handles according to the illustrated embodiments in different sizes.
- Grip core sheath 39 minimum radial extent soft layer 40 radial extent
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP06806460.9A EP1979135B1 (de) | 2005-12-29 | 2006-10-23 | Griff für ein ein torsionsmoment übertragendes werkzeug |
Applications Claiming Priority (24)
Application Number | Priority Date | Filing Date | Title |
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DE202005016866.1 | 2005-10-26 | ||
DE202005016866 | 2005-10-26 | ||
DE102005055981.6 | 2005-11-22 | ||
DE200510055981 DE102005055981B4 (de) | 2005-11-22 | 2005-11-22 | Handgriff für Werkzeuge und Betätigungselemente |
DE102005063035.9 | 2005-12-29 | ||
DE102005063035 | 2005-12-29 | ||
DE102006002594.6 | 2006-01-18 | ||
DE102006002594 | 2006-01-18 | ||
DE102006006012 | 2006-02-08 | ||
DE102006006012.1 | 2006-02-08 | ||
DE102006010397.1 | 2006-03-03 | ||
DE102006010397 | 2006-03-03 | ||
DE102006012576 | 2006-03-16 | ||
DE102006012576.2 | 2006-03-16 | ||
DE202006005385.9 | 2006-03-31 | ||
DE202006005385 | 2006-03-31 | ||
DE202006005503U DE202006005503U1 (de) | 2005-10-26 | 2006-04-03 | Handgriff für Werkzeuge |
DE202006005503.7 | 2006-04-03 | ||
DE102006022019.6 | 2006-05-10 | ||
DE102006022019 | 2006-05-10 | ||
EP2006006093 | 2006-06-23 | ||
EP2006006092 | 2006-06-23 | ||
EPPCT/EP2006/006092 | 2006-06-23 | ||
EPPCT/EP2006/006093 | 2006-06-23 |
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WO2007048555A1 true WO2007048555A1 (de) | 2007-05-03 |
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PCT/EP2006/010184 WO2007048555A1 (de) | 2005-10-26 | 2006-10-23 | Griff für ein ein torsionsmoment übertragendes werkzeug |
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EP2045046A1 (de) | 2007-10-05 | 2009-04-08 | Felo-Werkzeugfabrik Holland-Letz Gmbh | Griff für ein Werkzeug |
DE102008010755A1 (de) | 2007-10-05 | 2009-04-09 | Felo-Werkzeugfabrik Holland-Letz Gmbh | Griff für ein Werkzeug |
DE102007038928B4 (de) * | 2007-08-17 | 2010-06-10 | Felo-Werkzeugfabrik Holland-Letz Gmbh | Werkzeug |
US10583550B2 (en) | 2017-11-02 | 2020-03-10 | Stanley Black & Decker, Inc. | Grip component for a hand tool |
US11110585B2 (en) | 2017-11-02 | 2021-09-07 | Stanley Black & Decker, Inc. | Grip component for a hand tool |
CN114450196A (zh) * | 2019-09-24 | 2022-05-06 | 大众汽车股份公司 | 操纵把手、覆盖装置和储物格以及机动车 |
US11795946B2 (en) * | 2020-03-04 | 2023-10-24 | Schlumberger Technology Corporation | Mud motor rotor with core and shell |
US11897115B2 (en) | 2020-12-09 | 2024-02-13 | Stanley Black & Decker, Inc. | Ergonomic grip for striking tool |
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CN114450196A (zh) * | 2019-09-24 | 2022-05-06 | 大众汽车股份公司 | 操纵把手、覆盖装置和储物格以及机动车 |
US11795946B2 (en) * | 2020-03-04 | 2023-10-24 | Schlumberger Technology Corporation | Mud motor rotor with core and shell |
US11897115B2 (en) | 2020-12-09 | 2024-02-13 | Stanley Black & Decker, Inc. | Ergonomic grip for striking tool |
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