WO1998031510A1 - Outil de tournage - Google Patents

Outil de tournage Download PDF

Info

Publication number
WO1998031510A1
WO1998031510A1 PCT/EP1998/000257 EP9800257W WO9831510A1 WO 1998031510 A1 WO1998031510 A1 WO 1998031510A1 EP 9800257 W EP9800257 W EP 9800257W WO 9831510 A1 WO9831510 A1 WO 9831510A1
Authority
WO
WIPO (PCT)
Prior art keywords
handle
section
cross
turning
turning tool
Prior art date
Application number
PCT/EP1998/000257
Other languages
German (de)
English (en)
Other versions
WO1998031510B1 (fr
Inventor
Hardy Haberstroh
Peter Lauster
Oliver Grill
Original Assignee
Willi Hahn Gmbh & 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
Priority claimed from DE19701406A external-priority patent/DE19701406C2/de
Priority claimed from DE19707954A external-priority patent/DE19707954C2/de
Application filed by Willi Hahn Gmbh & Co. Kg filed Critical Willi Hahn Gmbh & Co. Kg
Publication of WO1998031510A1 publication Critical patent/WO1998031510A1/fr
Publication of WO1998031510B1 publication Critical patent/WO1998031510B1/fr

Links

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
    • B25G1/102—Handle constructions characterised by material or shape the shape being specially adapted to facilitate handling or improve grip

Definitions

  • the invention relates to a turning tool, comprising a handle with a blade, which - viewed in the direction of the longitudinal axis of the handle - has at least partially an octagonal cross-section and a turning tool with a handle with a blade according to the preamble of claim 16.
  • Turning tools of the type mentioned here are known. They include a handle, also known as a handle, which has a blade.
  • a known handle has a force rotation area adjoining the handle end, to which a quick rotation area and to which the handle start connect.
  • the handle has an octagonal cross-section with pronounced edges, which enables a powerful turning of the turning tool for the transmission of a high torque.
  • the force required to generate a certain torque is applied by the hand of a user, which at least partially encloses the handle, in the usual handling of the handle.
  • the edges of the octagonal cross-section of the handle reduce the risk of the hand slipping, i.e. the polygonal cross-section increases the grip of the handle and thus the transferable torque.
  • the known polygonal handles do not always adapt to the hand contour.
  • the result is that the handles are uncomfortable in the hand and their edges press into the hand of the user when a force required for a certain torque is applied.
  • pain is caused which, particularly in the case of continuous stress, that is to say when the turning tool is turned for a longer period and large forces are applied to the handle to generate large torques, at least leads to a reduction and in some cases even to a complete loss of the turning comfort.
  • the pain in the hand caused by the edges of the angular cross section increases with increasing force in a short time, so that a peak load of the turning tool, i.e. the transmission of the maximum torque, is not painlessly possible in all cases.
  • the invention is therefore based on the object of creating a turning tool, the handle of which offers a comfortable gripping feeling and with the high turning moments, even with constant and peak loads, can be transferred with a high degree of turning comfort.
  • the turning tool comprises a handle which has a blade and which, viewed in the direction of the longitudinal axis, at least partially has an octagonal cross section.
  • the turning tool is characterized in that the octagonal cross section of the handle comprises at least two different circular sections.
  • the cross section of the handle has - seen in each section plane over the longitudinal axis of the handle - an overall round or rounded outer contour, so that the loads acting on the hand of the user are so low even when transmitting high torques that even with a permanent load, that means turning the handle vigorously over a longer period of time, painless turning is possible.
  • the shape of the handle by means of various circular sections ensures a comfortable grasping feeling and thus a high degree of turning comfort with simultaneous transmission of high torques.
  • the term “different circular sections” is understood to mean types of circular sections which, for example, have different radii of curvature, arc lengths and / or widths or other dimensional differences.
  • An edge is formed between two different circular sections. Due to the curved outer surfaces of the circular cuts and the edge formed between two different circular sections enables an optimal positive locking of the turning tool handle and the hand of the user, so that the transmission of high torques is possible with little effort and high turning comfort.
  • the curved outer surfaces of the handle give the user a pleasant and comfortable grip feeling.
  • An exemplary embodiment of the turning tool is preferred, which is characterized in that the polygonal, preferably octagonal, cross section is composed of eight, preferably four times two different, circular sections.
  • the polygonal, preferably octagonal, cross section is composed of eight, preferably four times two different, circular sections.
  • the cross section of the handle is composed of circular sections with two different geometries, that is to say of two circular section types, which are arranged alternately one behind the other, as seen over the circumference of the handle.
  • the term "geometries” includes constructive variables, for example radii of curvature or dimensions understood.
  • the cross-section of the handle is symmetrical due to the alternating, evenly distributed arrangement of the circular sections and thus advantageously ensures a high degree of turning comfort in any gripping position of the hand, with the handle being handled normally.
  • An exemplary embodiment of the turning tool is particularly preferred in which the radius of curvature of a first circular section corresponds to half the diameter of the respective cross section of the handle, and that the radius of curvature of a second circular section is larger than the radius of curvature of the first circular section. Due to the larger radius of curvature, the second circular sections appear flatter and less pronounced in their rounding. This ensures an optimal form fit between the handle and hand, which enables the transmission of high torques with little effort, while maintaining a high level of turning comfort.
  • an exemplary embodiment of the turning tool is also preferred, in which the proportions of the outer surfaces of the different circular sections, in particular of the circular sections having different radii of curvature, are in a different relationship to one another on the entire circumference of the handle.
  • the proportion of the second circular sections having a larger radius of curvature is selected as a function of the handle size and the maximum torque that can be transmitted. Because with increasing handle size the powerful turning in the According to the invention, the foreground increases in proportion to the proportion of the circular segments with the larger radius in the total circumference. Larger handles appear more flat and angular, while smaller handles according to the invention appear more circular in cross section.
  • An exemplary embodiment of the turning tool is furthermore preferred, which is characterized in that the outer contour of the handle — seen transversely to the longitudinal axis of the handle — has a curved course.
  • the preferably S-curve-shaped course of the outer contour is formed by the fact that the power turning area drops both towards the end of the handle and towards the quick turning area and that the quick area going into a thumb rest has an increasing course.
  • the respective S-curve-shaped outer contour of a handle has an inflection point, which is preferably between the force range and the rapid rotation range.
  • a further exemplary embodiment of the turning tool is preferred, in which the handle of the turning tool, which has a rapid and a power turning range, has an octagonal cross section only in the power turning range.
  • the handle of the turning tool which has a rapid and a power turning range
  • has an octagonal cross section only in the power turning range In the area of the force rotation range of a handle, the force required to generate a certain torque is applied by the hand of a user with normal handling of the handle.
  • the octagonal cross-section of the handle ensures the necessary safety against slipping in this area.
  • the remaining areas or cross sections of the handle are preferably at least essentially circular or rounded, so that the handle offers a comfortable grip.
  • an exemplary embodiment of a turning tool with a handle having a blade with a rapid turning area and a, preferably octagonal, power turning area is preferred, which is characterized in that the, preferably octagonal, cross section of the handle - viewed in the direction of the handle start - into one, at least in essentially differently constructed, preferably circular, cross-section, preferably continuously.
  • the focus of the requirements and the design of the handle lies in the highest possible turning comfort in the fast turning area and in the power turning area in efficient power transmission with acceptable turning comfort, so that with this embodiment both requirements in the relevant handle areas are taken into account.
  • the substantially circular or rounded outer contour of the handle that is, in particular the preferably octagonal power rotation area with preferably additionally rounded edges, provided by the inventive, substantially circular or rounded.
  • This type of shaping enables a particularly good adaptation of the respective handle to the hand of the user, so that the turning comfort and the function of the handle can be further improved.
  • it has proven to be particularly advantageous to if necessary, allow zones or areas of a handle with different cross-sections to blend harmoniously into one another.
  • a turning tool having the features of claim 16.
  • This comprises a handle with a blade.
  • the handle comprises a power and a fast turning area, the cross sections of which have different geometries, and is characterized by a stepless transition between the power turning area and the quick turning area. Due to the even transition, without annoying steps and heels, the handle can be gripped or used powerfully by the user's hand.
  • a handle designed in this way lies comfortably in the hand and conveys a pleasant feeling of grip.
  • the stepless, preferably harmonic, transition between power and fast turning range ensures an optimal adaptation to the hand contour, independent of the access angle, so that even high torques can be transmitted with little effort and high turning comfort.
  • the invention relates not only to individual turning tools, but also to a number of turning tool systems having turning tools, the turning tools of which have handles of different sizes according to the invention, but in principle with the same structure in the embodiment described above and below.
  • the invention is explained in more detail below with reference to the drawing. Show it:
  • FIG. 1 shows a perspective illustration of an embodiment of a turning tool handle of the turning tool according to the invention
  • FIG. 2 shows a front view of the turning tool handle according to FIG. 1 on an enlarged scale
  • Figures show a sectional view and two side views of a total of four turning tool handles, which have different sizes.
  • FIG. 1 shows a perspective illustration of an embodiment of a turning tool handle, hereinafter referred to briefly as handle 1, which is part of a turning tool.
  • the handle 1 which is preferably made of at least one plastic, in particular polypropylene and optionally a thermoplastic elastomer (TPE), is connected in a casting process, preferably an injection molding process, to a blade (not shown here).
  • TPE thermoplastic elastomer
  • the blade which is also referred to as the cutting edge, can be designed differently, for example in the form of slits and cross-slits for slotted screws or Phillips screws.
  • Blades can also be provided which attach to the outer contour of a screw, in particular to the screw head, or a nut in order to transmit a torque.
  • Such blades can have, for example, an internal hexagon contour.
  • the handle 1 shown in FIG. 1 has a handle start 3 and a handle end 5. At the beginning of the handle 3 there is a permanent support 7, to which — seen in the direction of the longitudinal axis 8 of the handle 1 — a rapid rotation region 9 and a force rotation region 11 adjoins this.
  • the handle 1 further comprises a roll-off protection 13, which in this exemplary embodiment of the handle is formed by two flat surfaces 14 and 15 arranged in the region of the thumb support 7, of which only the surface 15 can be seen in FIG.
  • An extension 17 is arranged between the thumb rest 7 and the beginning of the handle 3.
  • the outer contour of the handle 1, viewed transversely to the longitudinal axis 8 of the handle has a curved course. As can be seen from FIG. 1, both the transition between the thumb support 7 and the rapid rotation region 9 and the transition between the rapid rotation region 9 and the power rotation region 11 are of stepless design.
  • the handle 1 has an essentially circular cross-section over the entire length, the size of the cross-section — viewed over the entire length of the handle 1 — varying.
  • the handle 1 In the area of the power rotation area 11, the handle 1 is spherical and has its largest diameter at a point 25.
  • the cross section of the handle 1 becomes smaller and smaller, up to a point 27, which is followed by a section 29 in the form of a spherical section.
  • the section 29 delimits or in turn forms the handle end 5. Starting from the largest diameter at the point 25, the cross section of the handle 1 becomes in the direction of the rapid rotation area 9 getting smaller and bigger again towards the thumb rest 7.
  • FIG. 2 shows a front view of the handle 1, from which several cross sections can be seen distributed over the length of the handle 1.
  • the extension 17 has a circular cylindrical cross section and is provided with an opening 19, the center of which lies on the longitudinal axis 8 of the handle 1.
  • the blade not shown here, is arranged in the opening 19.
  • the handle 1 has a circular cross section at a point 21 in the region of the thumb support 7, which is interrupted by the surfaces 14 and 15 of the roll-off protection 13.
  • the surfaces 14, 15 of the roll-off protection 13 lie at a distance from one another and run parallel to one another or form an angle with one another.
  • the handle 1 has an eight-section cross section in the area of the power rotation area 11. Only the surfaces 33, 35 and 37 can be seen from the surfaces in FIG. 1. The other surfaces 39, 41, 43, 45 and 47 are partially visible in Figure 2.
  • the cross section at point 25 is composed of eight circular sections, each with two different geometries, which have different radii of curvature, widths and arc lengths. Viewed in the circumferential direction, the surfaces 35, 39, 43 and 47 have a larger proportion of the total circumference of the handle at point 25 than the surfaces 33, 37, 41 and 45, one of which is arranged between two larger circular sections . Which have a different geometry the circular sections are - viewed in the circumferential direction of the handle 1 - arranged alternately one behind the other, so that an edge is formed between two adjacent, uneven circular sections. In the embodiment shown in FIGS. 1 and 2 there are therefore a total of eight edges A to H arranged uniformly distributed over the outer surface of the handle 1.
  • the edge formed between two adjacent, differently sized circular sections is only very slight and, as can be seen from FIGS. 1 and 2, can additionally be rounded, so that overall a substantially circular cross section results.
  • the eight-sided cross section of the handle 1 merges into a circular cross section at point 23 and into a substantially spherical cross section at point 27.
  • the cross section of the handle 1 at the point 23, which is provided between the rapid rotation area 9 and the power turning area 11, and the cross section at the point 27, which is located between the power turning area 11 and the section 29 arranged at the " handle end 5, are shown in FIGS 1 and 2.
  • the dashed lines indicate the cross-section of eight faces - as can be seen in FIG.
  • the rapid rotation area 9 and the force rotation area 11 of the handle 1 are also referred to as functional areas which extend over a longitudinal area of the handle 1. In order to be able to specify a ratio of the length of the rapid turning area 9 to the length of the power turning area 11, these areas must be defined. For example, the transition from the rapid rotation region 9 to the force rotation region 11 can be provided at a point at which the circular cross section merges into the eight-flat cross section.
  • a further definition of the transition from the rapid turning range to the power turning range can be determined by the curved shape of the outer contour of the handle 1.
  • the transition from the rapid rotation region 9 to the force rotation region 11 is provided at the location of the handle 1 at which the outer contour of the handle 1 changes from a convex to a concave line shape.
  • the functional areas of the handle 1 with materials and / or surfaces.
  • the rapid turning area 9 can have a different material than the power turning area 11.
  • the quick turning area 9 and the power turning area 11 of the handle 1 are structured differently and / or have a different roughness.
  • FIGS. 3 to 6 each show two side views and a sectional view of an embodiment of a turning tool handle.
  • the turning tool handles described below with reference to FIGS. 3 to 6 are each part of a turning tool.
  • the Rotary tool handles, each with a blade (not shown), have different handle sizes, which enable the transmission of a maximum torque that can be transmitted for the respective size with a high degree of turning comfort.
  • the shape and size of the handles shown in FIGS. 3 to 6 can be adapted to the requirements placed on the respective handle, namely transmission of the predetermined maximum torque that can be transmitted with the greatest possible turning comfort, good handling, good suitability for permanent and peak loads and the like .
  • the shape of the handles shown in FIGS. 3 to 6 essentially corresponds to that of handle 1 shown in FIG. 1, which will be discussed in more detail below.
  • FIG. 3 shows two side views of an embodiment of a handle 51 of the turning tool according to the invention and a sectional view of the handle 51 along the section line AA shown in the upper side view. Parts that correspond to those in Figures 1 and 2 are provided with the same reference numerals, ' so that in this respect reference can be made to the description of Figures 1 and 2.
  • the handle 51 has a thumb support 7 provided with a roll-off protection 13, a rapid rotation area 9 and a power rotation area 11.
  • a first distance X Q which indicates the longitudinal extent of the section 29, is in a range from 3 mm to 7 mm and is in particular 5 mm.
  • the X Q was the same size for all grip sizes of the turning tool.
  • a further distance x- between the handle end 5 and the largest diameter De-, the handle 51 is given at the point 25.
  • the distance x ⁇ is in a range from 34.5 mm to 38.5 mm, preferably from 35.5 mm to 37.5 mm and in particular 36.5 mm.
  • At a distance x 2 from the handle end 5 there is preferably the area in which the eight-flat cross section of the handle 51 changes continuously into a circular cross section.
  • the distance x 2 is in a range from 66 mm to 72 mm, preferably from 67.5 mm to 70.5 mm, in particular from 68 mm to 69 mm.
  • the smallest diameter d 51 of the handle is provided at point 53 and is at a distance x 3 from the handle end 5, which is in a range from 83 mm to 92 mm, preferably from 85 mm to 90 mm, in particular from 87 mm to 88 mm lies.
  • a distance x 4 from the handle end 5 there is the end of the thumb support 7 facing the handle start 3 at the point 21.
  • the distance x 4 is in a range from 110.5 mm to 121 mm, preferably from 112.5 mm to 118, 5 mm, in particular from 114.5 mm to 116.5 mm.
  • the length L 51 of the handle 51 measured between the handle beginning 3 and the handle end 5 is in a range from 118.5 mm to 128.5 mm, preferably from 120.5 mm to 126.5 mm, in particular from 122.5 mm to 124.5 mm.
  • the cross section of the handle 51 is eight-flat in the area of the force rotation area 11, as already described above.
  • the eight-flat cross-section continues in the direction of the rapid turning area 9 and is seamless, that is to say without steps and shoulders, in the area of the Rapid rotation area 9 in a circular cross section.
  • the diameter d 51 of the smallest cross section at the point 53 of the handle 51 is in a range from 18.5 mm to 22.5 mm, preferably from 19.5 mm to 21.5 mm and is in particular 20.5 mm.
  • the largest diameter D 51 at point 25 is in a range from 38 mm to 43 mm, preferably from 39 mm to 42 and is in particular 41 mm.
  • the distance x 5 between the smallest diameter 51 and the largest diameter Den is in a range from 49 mm to 53 mm, preferably from 50 mm to 52 mm and is in particular 51 mm.
  • the handle 51 has a diameter at the point 21 which is in a range from 26 mm to 32 mm and is in particular 29 mm.
  • the extension 17 has a diameter of preferably 13 mm. The diameter of the extension 17 is preferably of the same size for all handle sizes of the turning tool.
  • the lower side view of the handle 51 shown in FIG. 3 is rotated counter-clockwise about the longitudinal axis 8 by an angular range that is smaller than 120 ° relative to the upper side view, in which the characteristic distances X Q to r are shown.
  • a further distance x 6 between the handle end 5 and the cross section of the handle 51 is indicated at a point 54.
  • the curved outer contour of the handle - viewed from left to right - changes from a concave line shape to a convex line shape.
  • the point 54 preferably represents the turning point at the The outer contour of the handle 51 is adjacent to the curve.
  • the distance x 6 is in a range from 58 mm to 64 mm, preferably from 60 mm to 62 mm.
  • the largest cross section of the handle 51 at the point 25 consists of eight circular sections 55, 57, 59, 61, 63, 65, 67 and 69 is put together.
  • the cross section of the handle 51 and thus the circular sections 55 to 69 are - starting from the largest diameter D 51 at the point 25 - in the direction of the handle beginning 3 and the handle end 5 smaller, so that both a smooth transition in the direction of the rapid turning range 9 and in Section 29 lying direction of the handle end 5 is formed.
  • the section 29 here has a flattened spherical section shape.
  • the cross section of the handle 51 can be composed of a maximum of eight, but at least two different circular sections. It is possible that the grip of 'circuit portions and at least one rounded or flat surface is formed. A handle is particularly preferred, the cross section of which at least in regions has a cross section composed of 4 ⁇ 2 or 2 ⁇ 4 circular sections.
  • “different circular sections” is understood to mean different types of circular sections whose radius of curvature and / or width and / or arc length deviate from one another.
  • the circular sections 55, 59, 63 and 67 are of identical design and have a larger proportion of the total circumference of the handle 51 than the circular sections 57, 61, 65 and 69.
  • the circular sections 55 , 59, 63 and 67 hereinafter referred to briefly as “large circular sections” and the circular sections 57, 61, 65 and 69 as “small circular sections”.
  • the large circular sections 55, 59, 63 and 67 have a radius of curvature Rl which is in a range from 30 mm to 36 mm and in particular is 33 mm.
  • the small circular sections 57, 61, 65 and 69 each extend over a circumferential area ⁇ of approximately 32 ° and have a radius of curvature R2 which is in the range from 17 mm to 24 mm and is in particular 20.5 mm.
  • the small circular sections 55, 59, 63 and 67 have a share in the total circumference of the handle 51 of 65%, which corresponds to a circumferential range of 233.2 °.
  • the radius of curvature R1 of the small circular sections 57, 61, 65, 69 corresponds to the radius of the cross section at the respective cross section of the handle 51, and that the radius of curvature R2 of the large circular sections 55, 59, 63, 67 is larger than that of the small circular sections.
  • the radii of curvature Rl and R2 of the different circular Sections are preferably matched to one another in such a way that the outer surfaces of the circular sections meet at an obtuse angle. As a result, an edge is formed between two different circular sections.
  • the angle at which the outer surface of the circular sections meet is in a range from ⁇ 180 ° and 120 °, preferably from 195 ° and 140 °, in particular from ⁇ 190 ° and 160 °.
  • edges A to H are shown, which, viewed in the circumferential direction of the handle, alternately arranged one behind the other and having differently sized circular sections 55 to 59 be formed.
  • the fact that the outer surfaces of the differently curved circular sections meet at an obtuse angle to form the edges A to H enables a form fit between the handle of the turning tool and the hand of the user, the edges A to H not having a disruptive effect when gripping.
  • the edges A to H can additionally rounded o 'of broken. With a handle designed in this way, high torques can also be transmitted with little effort.
  • edges A to H do not cause any pain in the hand of the user, even when the turning tool according to the invention is used for a long time.
  • the edges A to H are optically and hardly perceptible when holding the handle and thus convey a comfortable feeling.
  • the effect of edges A to H according to the invention only occurs then when the handle is packed powerfully and a relatively large force is applied to transmit a large torque.
  • the edges A to H ensure the form fit between the handle and hand and thus increase the slip resistance without causing unpleasant or even painful symptoms in the hand of the user.
  • the handle 51 described for FIG. 3 and used for relatively large blades can be used particularly advantageously for the transmission of large torques.
  • the average torques that can be transmitted with the handle 51 are dependent, among other things, on the condition of the handle surface. It has been shown that the torques that can be applied with the handle 51 are 8.74 Nm on average with a dry handle surface. An average maximum torque of 5.97 Nm can be transmitted with a wet handle surface and with an oily handle surface of 2.63 Nm. Deviations from the torques specified here are possible because each user of the turning tool provided with the handle 51 has different forces.
  • the specified torques are only to be understood as example values.
  • FIG. 4 shows two side views and a sectional view of a further handle 71 for a turning tool, which has a smaller size than the handle 51 shown in FIG. 3.
  • the terms "small” and “large” in connection with the handles are only to be understood as a comparison between the maximum transmissible torques. This comparison of the handles must be made with other identical parameters, such as user, screw, blade type, which also influence the maximum transferable torque.
  • the handle 71 is preferably used for a turning tool or a blade in which the maximum transferable torque is smaller than the maximum transferable torque of the handle 51.
  • the handle 71 has a thumb rest 7 provided with a roll-off protection 13, a quick-turn area 9 and a power-turn area 11 on.
  • the handles 71 and 51 have essentially the same outer contour.
  • the most important differences are that the force rotation range 11 of the handle 71 is not as pronounced as the force rotation range 11 of the handle 51 and that the quick rotation range 9 is pronounced in the smaller handle 71. ter than that of the handle 51.
  • These different shapes result from the requirements placed on the respective handle, namely transmission of the maximum torque that can be transmitted for the respective handle size, the torque being preferably the same for all sizes.
  • the handle 71 used for the transmission of smaller torques is therefore not as spherical in the force rotation area as the handle 51, that is to say the handle 71 has smaller diameters, in particular in the force rotation area 11.
  • the type of shape of the rapid turning area 9 of the handle 71 enables a user to turn faster than the handle 51 with a high degree of turning comfort. Fast turning is not always required of a turning tool with a large handle, since in this case the focus is often on power-driven turning for the transmission of larger or larger torques.
  • the characteristic parameters or distances (x Q to x 6 ) of the handle 71 are at least substantially the same as those of the handle 51.
  • the distance x Q between the point 27 and the handle end 5 is 5 mm here.
  • the largest diameter D 71 of the handle 71 is arranged at a distance x.., Which is in a range from 35 mm to 39 mm, preferably from 36 mm to 38 mm and in particular is 37 mm, from the handle end 5.
  • the distance 2 between the handle end 5 and the transition from the eight-flat cross section to the circular cross section is in a range from 71 mm to 77 mm, preferably from 73 mm to 75 mm and is in particular 74 mm.
  • the distance x- between The smallest diameter d 71 of the handle 71 and the handle end 5 is in a range from 81 mm to 90 mm, preferably from 83 mm to 88 mm, in particular from 85 mm to 86 mm.
  • the distance x 4 between the handle end 5 and the end of the thumb rest 7 is in a range from 105 mm to 115 mm, preferably from 107 mm to 113 mm, in particular from 109 mm to 111 mm.
  • the total length L 71 of the handle 71 measured between the handle beginning 3 and the handle end 5 is in a range from 113 mm to 124 mm, preferably from 117 mm to 120 mm.
  • the smallest diameter d 71 is in a range from 17 mm to 21 mm, preferably from 18 mm to 20 mm and is in particular 19.5 mm.
  • the largest diameter D 71 is in a range from 32.5 mm to 38.5 mm, preferably from 34 mm to 37 mm, in particular from 35 mm to 36 mm.
  • the distance x 5 between the cross section with the largest diameter D 71 and the cross section with the smallest diameter D 71 is in a range from 47 mm to 51 mm, preferably from 48 mm to 50 mm and is in particular 49 mm.
  • the distance Xg between the point 54 and the handle end 5 is specified, which is in a range from 60 mm to 66 mm, preferably from 62 mm to 64 mm and in particular is 63 mm.
  • the diameter of the extension 17 is 13 mm in this exemplary embodiment.
  • the diameter of the handle 71 at the point 21 is in a range from 25 mm to 31 mm and is in particular approximately 28 mm.
  • the maximum torque that can be transmitted with the handle 71 is 8.04 Nm for a dry handle surface, 4.98 Nm for a wet handle surface and 2.76 Nm for an oily handle surface.
  • FIG. 4 shows a sectional view of the handle 71 along the section line A-A, which is dash-dotted in the upper side view.
  • the radius of curvature Rl of the large circular sections 55, 59, 63, 67 and the radius of curvature R2 of the small circular sections 57, 61, 65, 69 are coordinated with one another such that an edge (see edges A to H ) is trained, all of which are also rounded off as a whole.
  • edges A to H the outer surfaces of the respective circular sections meet at an obtuse angle.
  • the circular sections 57, 61, 65 and 69 each extend over an angular range ⁇ of the circumference of the handle at point 25 of approximately 33 °.
  • the large circular sections 55, 59, 63 and 67 extend over a circumferential area of approximately 57 ° and here have a share in the total circumference of the handle 71 of 63%, which corresponds to a circumferential area of 228.2 °.
  • the radius of curvature Rl of the large circular sections in this exemplary embodiment is 26 mm and the radius of curvature R2 of the small circular sections is approximately 18 mm.
  • FIG. 5 shows a sectional view and two side views of a further embodiment of a handle 73 for a turning tool, which is smaller than the handles 51 and 71 and which is used to transmit smaller torques.
  • Parts which correspond to those in Figures 1 to 4 are provided with the same reference numerals, so that in this respect reference can be made to their description with reference to Figures 1 to 4.
  • the force rotation range 11 of the handle 73 is not as pronounced as the force rotation range of the next larger handle 71.
  • the quick rotation range 9 of the handle 73 is more pronounced and pronounced than the quick rotation ranges of the handles 51 and 71.
  • the total length L 73 of the handle 73 measured between the handle start 3 and the handle end 5 is in a range from 105 mm to 116 mm, preferably from 108 mm to 113 mm, in particular from 110 mm to 111 mm.
  • the distance x 4 of the handle 73 is in a range from 98.5 mm to 108.5 mm, preferably from 100.5 mm to 106.5 mm, in particular from 102.5 mm to 104.5 mm.
  • the distance x-- between the smallest diameter d 73 and the handle end 5 is in a range from 76 mm to 85 mm, preferably from 78 mm to 83 mm, in particular from 80 mm to 81 mm.
  • the distance x 2 between the point at which the eight-area cross section present in the power turning area merges into a circular cross section located in the area of the quick turning area 9 is in a range from 65 mm to 71 mm, preferably from 67 mm to 69 mm.
  • the distance x ⁇ between the largest diameter D auf und- 73 the cross section and the handle end 5 is in a range from 31 mm to 35 mm, preferably from 32 mm to 34 mm and is in particular 33 mm.
  • the distance X Q between the point 27 and the handle end 5 of the handle 73 is preferably 5 mm.
  • the largest diameter D 73 of the handle 73 is in a range from 28 mm to 32 mm, preferably from 29 mm to 31 mm and is in particular 30 mm.
  • the smallest diameter d 73 of the handle 73 is in a range from 14 mm to 18 mm, preferably from 15 mm to 16 mm and is in particular 16 mm.
  • the distance x ⁇ between the largest diameter D 73 and the smallest diameter d 73 is in a range from 46 mm to 50 mm, preferably from 47 mm to 49 mm and is in particular 48 mm.
  • the distance x 6 entered in FIG. 5, bottom side view, of the handle 73 between the turning point of the curved outer contour at the point 54 and the handle end 5 is in a range from 52 mm to 58 mm, preferably from 54 mm to 56 mm, and is especially 55 mm.
  • the diameter of the handle 73 at the point 21 is in a range from 17.5 mm to 20.5 mm and is in particular approximately 20.5 mm.
  • the average, maximum transmissible torque that can be transmitted with the handle 73 having a dry handle surface is approximately 5.65 Nm. This value is reduced to approximately 2.92 Nm with a wet handle surface and to approximately 1.83 Nm with an oily handle surface. It can be seen from the sectional view shown in FIG. 5 that the handle 73 is cut along the section line AA drawn in dash-dot lines in the upper side view, that the handle 73 also has an eight-section cross section in the force rotation region 11.
  • the circular sections 55, 59, 63 and 67 which extend over a circumferential area of approximately 56 °, each have a radius of curvature R1 of 25 mm and a proportion of the total circumference of the handle 73 of 61% in this exemplary embodiment, which is a circumferential area of 222.4 ° corresponds.
  • the small circular sections 57, 61, 65 and 69 which here extend over a circumferential area ⁇ of the handle 73 of approximately 34 °, each have a radius of curvature R2 of approximately 15 mm.
  • FIG. 6 shows two side views and a cross section of a further embodiment of a handle 75 for a turning tool.
  • the handle 75 is smaller than the handles 51, 71 and 73 described above and serves to transmit small torques.
  • the rapid turning range 9 of the handle 75 is particularly pronounced in comparison to the larger handles 51, 71 and 73, while its power turning range 11 is only slightly emphasized.
  • the shape and size of the handle 75 is designed in accordance with the intended area of use and is particularly suitable for fast turning, also referred to as twisting. It has been shown that, on average, a maximum torque of 3.16 Nm can be transmitted with a dry grip surface. A wet grip surface leads to a reduction in the average maximum transferable torque to a value of 1.67 Nm and with an oily handle surface up to a value of 1.17 Nm.
  • the distance x Q which indicates the longitudinal region of the section 29, is preferably 5 mm.
  • the distance x- between the cross section with the largest diameter D ⁇ of the handle 75 and the handle end 5 is in a range from 27 mm to 31 mm, preferably from 28 mm to 30 mm and is in particular 29 mm.
  • the distance x 2 based on the direction between the handle end 5 and the area in which the eight-flat cross section in the power rotation area 11 of the handle 75 changes continuously into a circular cross section in the quick turn area 9, is preferably in a range from 55 mm to 61 mm from 57 mm to 59 mm and is in particular 58 mm.
  • the distance x- between the cross section with the smallest diameter d 75 and the handle end 5 is in a range from 73 mm to 81 mm, preferably from 75 mm to 79 mm and is in particular 77 mm.
  • the handle end 5 is arranged at a distance x 4 from the end of the thumb rest 7 located at the point 21, which is in a range from 92 mm to 102 mm, preferably from 94 mm to 100 mm, in particular from 96 mm to 98 mm.
  • the total length L 75 of the handle 75 is in a range from 99 mm to 109 mm, preferably from 102 mm to 106 mm, in particular from 103 mm to 105 mm.
  • the distance 5 between the cross section with the smallest diameter d 75 and that with the largest diameter D 75 of the handle 75 is in a range from 46.5 mm to 50.5 mm, preferably from 47.5 mm to 49.5 mm and amounts in particular 48.5 mm.
  • the smallest diameter d 75 is in a range from 11 mm to 15 mm, preferably from 12 mm to 14 mm and is in particular 13 mm.
  • the largest diameter D 75 of the handle 75 is in a range from 21 mm to 25 mm, preferably from 22 mm to 24 mm and is in particular 23 mm.
  • the distance x 6 between the point 54 and the handle end 5 is indicated.
  • the distance x 6 is in a range from 44.5 mm to 50.5 mm, preferably from 46.5 mm to 48.5 mm and is in particular approximately 47.5 mm.
  • the diameter of the handle 75 at the point 21 is in a range from 14 mm to 20 mm and is in particular approximately 17 mm.
  • the right illustration in FIG. 6 shows a sectional view of the handle 75 along the dash-dotted section line BB shown in the upper side view.
  • the circular sections 55, 59, 63 and 67 extend over a circumferential area of the cross section with the largest diameter D 75 of approximately 51 ° and have a radius of curvature R 1, which here is 16.5 mm.
  • the proportion of the circular sections 55, 59, 63 and 67 in the total circumference of the handle 75 here is approximately 56%, which corresponds to a circumferential area of 204 °.
  • the circular sections 57, 61, 65 and 69 have a radius of curvature R2 of 11.5 mm and extend over a circumferential region ⁇ of the cross section at point 25 of approximately 39 °.
  • each of the handles 51, 71, 73 and 75 is individually designed in shape and size. A formal affiliation based on the derivation of a basic handle shape can be clearly recognized.
  • the handles 51, 71, 73 and 75 have a series character, which is partly due to the fact that some of the characteristic parameters or distances are at least substantially the same for all handle sizes. With each of the handles 51, 71, 73 and 75 of different sizes, which can be part of a turning tool system, the transmission of the maximum torque that can be transmitted for the respective handle size is possible, the torque to be applied for this being constant for all handle sizes.
  • each of the handles 51, 71, 73 and 75 preferably represents a non-proportionally scaled modification of a basic handle shape which enables the maximum torque which can be transmitted for the size of the basic handle shape to be transmitted with the greatest possible turning comfort. Regardless of the size of the respective handle, the user is given a comfortable gripping feeling by the handle cross-section made up of different circular sections. Furthermore, relatively high torques can be transmitted with each of the handles with little effort.
  • the handles 51, 71, 73 and 75 have the same or only partially design parameters which differ from one another in a small range.
  • the total length L of the handles 51, 71, 73, 75 differs between the smallest handle 75 and the largest handle 51, preferably by a maximum of 13%.
  • the distance x 4 between the end of the thumb rest 7 and the handle end 5 of the respective handle differs between the smallest and the largest handle size by a maximum of 19%.
  • the handles 51, 71, 73, 75 of different sizes have a cross section with a smallest diameter d, which deviates from one another by a maximum of 13%.
  • the maximum deviation generally exists between the smallest handle 75 and the largest handle 51.
  • a particular correspondence between the handles 51, 71, 73, 75 can be found when comparing the respective distance x 5 between the smallest and largest diameter. The maximum difference at the distance is x-- 6%.
  • the handles 51, 71, 73 and 75 each have a cross section with the largest diameter D, which differ from one another by a maximum of 26%.
  • the handles 51, 71, 73 and 75 have different length ratios with regard to their functional areas, in particular between the rapid rotation range and the power rotation range of the respective handle.
  • the length of the respective rapid rotation range of the handles 51, 71, 73 and 75 is now defined purely by way of example as the difference between the distance x 4 and the distance x 2 , and the length of the respective power rotation range is preferably the difference between the distance x 2 and the Distance x n , the following are preferred Length ratios:
  • the length ratio between the rapid turning range and the power turning range is preferably 1: 1.4, for the handle 71 preferably 1: 1.9, for the handle 73 preferably 1: 1.8 and for the smallest handle 75 preferably 1: 1.4 .
  • the length ratios of the handles 51, 71, 73 and 75 preferably differ by at least 10% between two successive handle sizes.
  • the ratio between the rapid turning range and the power turning range for the handle 73 is at least 10% larger than for the handle 75.
  • the length of the respective rapid rotation range of the handles 51, 71, 73 and 75 can, for example, also be the difference between the distance 4 and the distance Xg, and the length of the respective power rotation range of the handles 51, 71, 73 and 75 as the difference between the distance Xg and the distance x Q can be defined.
  • the handle 51 has a length ratio between the rapid rotation range and the force rotation range of preferably 1: 1.0.
  • the length ratio of the handle 71 is preferably 1: 1.2, that of the handle 73 is preferably 1: 1.0 and that of the handle 75 is preferably 1: 0.9.
  • the length ratios between two successive handles, for example between handle 51 and handle 71 preferably differ by at least 18%.
  • FIG. 1 An exemplary embodiment of the turning tool is particularly preferred, which is characterized in that the turning tool is a screwdriver.
  • the on the basis of Figures 1 to. 6 handles for a turning tool only differ in size and, according to the invention, have an octagonal cross section, which is composed of two different circular sections or section types.
  • the invention also relates to turning tool handles, the cross section of which consists of at least two types of circular sections and at least one further outer surface, for example that of a segment, which is flat or has only a slight curvature.
  • the edge formed at the joint between two different circular sections can preferably be rounded off or merely broken in all exemplary embodiments of the invention.
  • a handle is particularly preferred which has a symmetrical cross section composed of different circular sections.
  • the handles in the area of the hand have no edges, steps, shoulders or the like.
  • the outer surface of the handles looks round as a result of the circular sections colliding at an obtuse angle.
  • the individual functional areas of the handle according to the invention that is to say power and fast turning areas, merge harmoniously and without the formation of edges or steps. It is preferably provided that the entire power turning area has an octagonal and the quick turning area has an, at least essentially, round cross section.
  • the cross-section of the handle which is composed of circular sections, offers a comfortable gripping feeling due to the optimal adaptation to the contour of the hand and at the same time guarantees a positive fit with the hand of the user to prevent slipping.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Harvester Elements (AREA)

Abstract

L'invention concerne un outil de tournage comprenant un manche qui, vu dans le sens de son axe longitudinal, présente, au moins en partie, une section octogonale. Cet outil de tournage se caractérise en ce que la section octogonale comporte au moins deux segments de cercle (55, 59, 63, 67; 57, 61, 65, 69) différents.
PCT/EP1998/000257 1997-01-17 1998-01-19 Outil de tournage WO1998031510A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19701406.2 1997-01-17
DE19701406A DE19701406C2 (de) 1997-01-17 1997-01-17 Drehwerkzeug-System
DE19707954A DE19707954C2 (de) 1997-01-17 1997-02-27 Drehwerkzeug
DE19707954.7 1997-02-27

Publications (2)

Publication Number Publication Date
WO1998031510A1 true WO1998031510A1 (fr) 1998-07-23
WO1998031510B1 WO1998031510B1 (fr) 1998-09-03

Family

ID=26033155

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/EP1998/000257 WO1998031510A1 (fr) 1997-01-17 1998-01-19 Outil de tournage
PCT/EP1998/000258 WO1998031511A1 (fr) 1997-01-17 1998-01-19 Systeme d'outils de tournage

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/000258 WO1998031511A1 (fr) 1997-01-17 1998-01-19 Systeme d'outils de tournage

Country Status (2)

Country Link
EP (1) EP0952902B1 (fr)
WO (2) WO1998031510A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19902882C2 (de) * 1999-01-25 2002-06-20 Holland Letz Felo Werkzeug Handgriffe für Arbeitsgeräte und Verfahren zu ihrer Herstellung
US20050080934A1 (en) 2003-09-30 2005-04-14 Cota-Robles Erik C. Invalidating translation lookaside buffer entries in a virtual machine (VM) system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208942A2 (fr) * 1985-07-13 1987-01-21 Wera-Werk Hermann Werner GmbH & Co. Poignée
EP0413218A1 (fr) * 1989-08-16 1991-02-20 Adolf Würth GmbH & Co. KG Outil d'entraînement pour douilles
DE29510821U1 (de) * 1995-07-04 1995-09-14 Betz Kg Heinrich Werkzeugheft
DE29517276U1 (de) * 1995-11-02 1996-11-28 Holland Letz Felo Werkzeug Werkzeughandgriff, insbesondere für Schraubendreher, Feilen, Stechbeitel und ähnliche Werkzeuge

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58906551D1 (de) * 1988-09-10 1994-02-10 Werner Hermann Wera Werke Feinschraubendreher.
DE9102500U1 (fr) * 1991-03-02 1991-05-23 Gebra Gmbh & Co. Gebr. Raderschad Kg, 5202 Hennef, De

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208942A2 (fr) * 1985-07-13 1987-01-21 Wera-Werk Hermann Werner GmbH & Co. Poignée
EP0413218A1 (fr) * 1989-08-16 1991-02-20 Adolf Würth GmbH & Co. KG Outil d'entraînement pour douilles
DE29510821U1 (de) * 1995-07-04 1995-09-14 Betz Kg Heinrich Werkzeugheft
DE29517276U1 (de) * 1995-11-02 1996-11-28 Holland Letz Felo Werkzeug Werkzeughandgriff, insbesondere für Schraubendreher, Feilen, Stechbeitel und ähnliche Werkzeuge

Also Published As

Publication number Publication date
WO1998031511A1 (fr) 1998-07-23
EP0952902B1 (fr) 2002-01-02
EP0952902A1 (fr) 1999-11-03

Similar Documents

Publication Publication Date Title
DE3525163C2 (fr)
DE69819969T2 (de) Bohrer mit Spannuten mit abwechselnd wendelförmigen und geraden Abschnitten
EP1718876A1 (fr) Vis autotaraudeuse
WO2005080802A1 (fr) Vis autotaraudeuse
EP0515830B1 (fr) Ciseaux
EP0947297B1 (fr) Moitié de ciseaux pour ciseaux à main
DE69936685T2 (de) Chirurgische Reibahle
EP0713017A2 (fr) Vis auto-taraudeuse
WO1998031510A1 (fr) Outil de tournage
DE10233030B3 (de) Wurzelkanalinstrument
EP0504782B1 (fr) Vis, procédé et matrice de laminage pour sa fabrication
DE19707954C2 (de) Drehwerkzeug
EP0916771B1 (fr) Dent de fraisage pour le travail de la terre
DE8110659U1 (de) "werkzeugheft"
WO2001053046A1 (fr) Poignee d'outil
DE19701406C2 (de) Drehwerkzeug-System
WO2018210637A1 (fr) Élément vis
EP1195532A1 (fr) Elément de liaison ayant un tête et une tige au moins partiellement filetée
WO1996030167A1 (fr) Tournevis a tige gainee
EP0505754B1 (fr) Bigoudi sans étrier, en forme de tige et son procédé de fabrication
WO2020049160A1 (fr) Couplage de connexion
DE3805580A1 (de) Zahnwurzelbearbeitungsinstrument
DE4037592A1 (de) Werkzeuggriff fuer werkzeuge, insbesondere schraubendreher
EP1145809A1 (fr) Ciseaux avec des poignées plastiques
EP1072364B1 (fr) Poignée d'outil

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CN IL JP KR NO RU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 1998533677

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase