EP0318401B1 - Eispickel ohne Kopf - Google Patents
Eispickel ohne Kopf Download PDFInfo
- Publication number
- EP0318401B1 EP0318401B1 EP19880420385 EP88420385A EP0318401B1 EP 0318401 B1 EP0318401 B1 EP 0318401B1 EP 19880420385 EP19880420385 EP 19880420385 EP 88420385 A EP88420385 A EP 88420385A EP 0318401 B1 EP0318401 B1 EP 0318401B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tools
- handle
- holes
- ice
- ice axe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B29/00—Apparatus for mountaineering
- A63B29/08—Hand equipment for climbers
Definitions
- the present invention relates to striking tools such as ice axes, ice hammers and similar utensils used in the field of mountaineering. It relates more specifically to tools of this type in which a handle receives added tools such as ice ax blade, ice ax breakdown, hammer head, or the like.
- Ice axes for alpinism are already known, for example as described in document EP-A-0 077 769, in which a head, attached at the end of the handle, comprises female housings with an elongated section for receiving tools with male parts, blocking means ensuring the joining of the assembly.
- the ice ax head comprises two female housings, for receiving two tools such as an ice ax blade and an ice ax tip, or such as an ice ax blade and a hammer head.
- Each of the tools is removable, interchangeable, so that the configuration of the ice ax can be modified at will.
- the object of the present invention is in particular to avoid the drawbacks of known ice ax structures by proposing a new structure for adapting the tools on the handle which is considerably simplified, and which can be obtained from cut and formed flat materials, and significantly reducing the number of parts to be assembled.
- Another object of the invention is to design an ice ax structure which is particularly well suited to the use of handles made of composite materials, for example based on carbon fibers.
- the structure according to the invention considerably facilitates implementation, for the interchangeability of the tools on the handle.
- Another object of the invention is to design certain embodiments allowing adjustment in translation and / or rotation tools relative to the handle, so that we can precisely adapt the shape of the ice ax to the uses that we want to make of it.
- the present invention provides specific means of complementary fitting of the tools relative to each other.
- Another object of these particular sockets is to significantly increase the mechanical resistance of the internal parts of tools: the shapes used to define the particular sockets distribute the mechanical stresses as well as possible on the contact surfaces, and avoid the appearance of primers a break. As a result, these shapes can be used not only with tools made of resistant metal, but also with tools made of more fragile materials, without having any resistance defect in the nesting zone.
- Another object of these particular sockets is to be compatible with non-metallic tools, that is to say tools for which the interlocking parts cannot have any shape.
- the complementary male-female nesting means ensuring the attachment of the tools relative to each other comprise a first lateral facet formed on the internal part of the first tool, and a second lateral facet formed on the inner part of the second tool; the two facets are pressed against each other according to an overlap zone when the tools are assembled; the facets have anti-sliding means preventing the sliding of the facets against one another in at least one direction.
- the side facets have grooves and ribs defining an interlocking of the ribs of a first tool in the grooves of the second tool.
- the grooves and ribs have complementary sections with oblique lateral faces, producing an interlocking wedge with backlash.
- the ice ax comprises a handle 1, the upper end of which is intended to receive two tools.
- the handle 1 receives an ice ax blade 2 and an ice ax failure 3; in the embodiment shown in Figures 6 and 7, the handle 1 receives an ice ax blade 4 and a hammer head 5; in the embodiment of FIG. 8, the handle 1 receives an ice ax blade 6 and an ice ax tip 7.
- the upper end of the handle 1 is provided with a longitudinal median slot 8, which is better visible in FIGS. 3 and 4, separating two lateral cheeks 9 and 10.
- the central slot is oriented in the longitudinal direction VV of the ice ax, that is to say in the usual direction of development of the ice ax blade, as shown in the figures .
- the side cheeks 9 and 10 are each pierced with two through holes: the cheek 9 is provided with holes 11 and 12, the cheek 10 is provided with holes 13 and 14.
- the holes 11 and 13 are close to the end of the handle, and are opposite each other; the holes 12 and 14 are further from the end of the handle, and are also opposite one another. All the holes 11 to 14 are through and allow the engagement of locking rods, as will be explained later.
- the handle part provided with the slot 8 forms an oblique zone with respect to to the rest of the handle, the assembly remaining in the anteroposterior plane of the ice ax, as shown in the figures.
- the slot 8 extends from the end of the handle to the elbow 15 connecting the oblique part 16 of the handle to the rest of the handle.
- the oblique portion 16 makes an angle of about 45 degrees relative to the rest of the handle.
- each of the tools comprises an outer part or working part, shaped for example in a known manner, and an inner part or hooking part shaped in a particular way according to the present invention.
- the blade 2 comprises an external part 21 and an internal part 22
- the purlin 3 comprises an external part 31 and an internal part 32.
- the blade 4 comprises an external part 41 and an internal part 42
- the hammer 5 comprises an external part 51 and an internal part 52. The same applies to the embodiment of FIG. 8.
- Each of the interior parts of the tool is provided with complementary male-female nesting means ensuring the attachment of the tools relative to one another by pivoting along a transverse axis.
- the transverse direction is defined as being perpendicular to the plane formed by the direction of development of the handle 1 and by the direction of development of the ice ax blade 2. This transverse direction is shown in top view in Figure 2 by the axis I-I.
- the complementary nesting can be ensured by a tenon-mortise type interlocking, for example a tenon on a first tool engaging in a mortise of the second tool.
- the socket is of the dovetail type, with possibly rounded edges, as shown in the figures, produced by corresponding transverse ribs and grooves formed on the interior parts of the tool.
- the inner part 22 of the blade 2 is provided with a groove 23, while the inner part 32 of the purlin 3 is provided with a rib 33, both having a dovetail section.
- the rib 33 and the corresponding groove 23 are preferably arranged so that, when the ice ax is in the locked position as shown in FIG. 1, with the tools in the use position on the handle, the rib and groove are inside the slot 8, in the intermediate position between the first series of holes 11 and 13 and the second series of holes 12 and 14 of the handle.
- Each of the inner parts of the tool is further provided with at least one transverse through hole arranged so as to correspond with the holes made in the cheeks of the handle.
- the inner part 22 of the blade 2 is provided with a hole 24, and the inner part 32 of the purlin 3 is provided with a hole 34.
- the hole 24 corresponds to the holes 11 and 13 of the handle, the hole 34 corresponds to the holes 12 and 14 of the handle.
- the hole 34 is of oblong shape, that is to say of elongated shape, the direction of its length being arranged perpendicular to the average contact surface between the two tools, or in other words parallel to the direction development of the pin 33 or the groove 23, as shown in the figures.
- the hole 24 of the blade 2 is associated with other holes 25 and 26, defining a family of holes which can each be matched with the holes 11 and 13 of the handle.
- This family of holes defines a possible inclination and translation adjustment between the tools and the handle.
- an adjustment in translation of all the tools relative to the handle is allowed by the holes 25 and 26, depending on whether one positions one or the other of the holes 25 or 26 opposite the holes 11 and 13 of the handle to introduce the rod 17; the translation is authorized by the oblong shape of the hole 34, in which the rod 18 slides.
- an adjustment in rotation of the set of tools relative to the handle is allowed for example by the holes 24 and 26, depending on whether the one of the holes 24 or 26 is positioned opposite the holes 11 and 13 of the handle to introduce the rod 17.
- Rods 17 and 18 respectively pass through the corresponding holes in the cheeks of the handle and the interior parts of the tool.
- the rod 17 passes through the holes 11 and 13 of the handle and one of the holes 24 to 26 of the blade 2
- the rod 18 passes through the holes 12 and 14 of the handle and the oblong hole 34 of the purlin 3.
- rods 17 and 18 consist of a bolt associated with a tightening nut, as shown in the figures.
- the bolt head bears on the outer face of a first cheek of the handle, and the nut bears on the outer face of the second cheek of the handle.
- the operation of the device is as follows: starting from a disassembled position, the two tools are assembled relative to one another, for example a blade 2 and a purlin 3, by sliding the tools transversely one by relative to each other to engage the rib 33 in the corresponding groove 23; in this position, the two tools are integral with one another, their only relative degree of freedom being a translation in the transverse direction; the assembly formed by the two internal parts 22 and 32 of the tools is engaged in the slot 8 of the handle, until the passage holes of the locking rods correspond, the locking rods are engaged in the corresponding holes, and thus realizes the ice ax of figure 1.
- the locking rod 17 is removed, the locking rod 18 is loosened, the assembly of the two tools is tilted to bring it into the position shown in the figure 5; the oblong hole 34 allows a translation of all of the tools relative to the handle, such translation being able to prove necessary to completely release the blade 2 relative to the handle; in this position, the blade 2 can be released transversely relative to the purlin 3; after replacing the tool 2, the whole of the two tools is again tilted to the position in FIG. 1 and the locking rods 17 and 18 are repositioned in the locking position.
- the structure according to the invention with a handle with an end slot in which two tools secured to one another engage, can be used with straight handles, that is to say without oblique part 16.
- This structure is however particularly well suitable for sleeves 1 made of composite or molded materials, sleeves that can be shaped with elbows or oblique parts. Indeed, the oblique part 16 as shown in the figures promotes the transmission of forces between the tools and the handle.
- the handle 1 receives an ice ax blade 4 and a hammer head 5.
- the blade 4 comprises an outer part 41 and an inner part 42;
- the hammer head 5 comprises an outer part 51 and an inner part 52.
- each interior tool part 42 and 52 comprises an end portion extending beyond the corresponding hole 24 or 34.
- the interior part 42 of the blade comprises the end extension 44 extending beyond the hole 24 of the blade 4; similarly, as shown in FIG. 11, the inner part 52 of the hammer head 5 comprises an extension 54 extending beyond the hole 34.
- the extensions 44 and 54 are intended to form the contact surfaces of the tools 4 and 5 against each other.
- the extension 44 comprises a lateral facet 45
- the extension 54 comprises a lateral facet 55 intended to be pressed against each other when the ice ax is in the assembly position shown in FIG. 9.
- the extension 44 presents, on its anterior face, the facet 45 on which the posterior facet 55 shown on Figure 11.
- the facets 45 and 55 are respectively provided with grooves and ribs intended to fit into each other.
- the grooves and ribs have complementary sections with oblique lateral faces, defining a wedge interlocking with play compensation.
- this interlocking wedge to take up play is a cross section of the ice ax of Figure 9 along the plane III-III: the extensions 44 and 54 are pressed one against the another according to their respective facets 45 and 55, the corresponding grooves and ribs being nested one inside the other as shown in the figure; the extensions 44 and 54 are kept pressed against each other by the pressure exerted on their outer faces by the cheeks 9 and 10 of the handle.
- the extensions 54 and 44 define an intermediate overlap zone, the intermediate overlap zone being disposed between the two series of holes 12, 24 and 14 on the one hand, 11, 34 and 13 on the other hand, crossed by the locking rods 18 and 17.
- the ribs and grooves of the facets 45 and 55 are oriented longitudinally, so that, when the ice ax is assembled, the ribs and grooves are substantially parallel to the direction II-II joining the two respective series of holes in the handle.
- This longitudinal arrangement of the grooves and ribs on the extensions 44 and 54 is advantageous. It facilitates in particular the tool change, by simple longitudinal sliding of the internal tool parts one on the other, when one of the two locking rods is removed. It also avoids the problems of distance between the holes and the ribs or grooves.
- the ribs and grooves can be arranged in transverse orientations on the lateral facets of the internal tool parts, so that when the ice ax is assembled, the ribs and grooves are substantially perpendicular to the direction II-II joining the series respective holes in the handle.
- the respective extensions 44 of the blade 4 and 54 of the hammer head 5 advantageously have a thickness reduced by half and are off-center relative to the mean plane VV of the tools, so that the mean joint plane of the facets 55 and 45 is in the medium plan VV of the tools.
- the operation of the device is as follows: starting from a disassembled position, the two tools are assembled one relative to the other by pressing one on the other the respective facets 45 and 55 of a blade 4 and a hammer head 5. The assembly formed by the two internal parts 42 and 52 of the tools is engaged in the slot 8 of the handle, until the holes for passage of the locking rods correspond, the rods are engaged of locking in the corresponding holes, and the ice ax of FIG. 9 is thus produced.
- the locking rod 17 is removed, the locking rod 18 is loosened, and the hammer head is made to slide in the longitudinal direction II-II of the ribs and grooves.
- the locking rods 17 and 18 are repositioned in the locking position.
- the hammer head 5 is susceptible to violent mechanical stresses. Provision is made for this that the hammer head 5 comprises a rear support face 53 intended to come to bear on the end face 19 of the handle. This considerably increases the surface area allowing the forces between the hammer head 5 and the handle 1 to be taken up again. This arrangement is well suited for handles made of composite materials.
- the ribs and grooves do not transmit the longitudinal forces of axis II-II from one tool to another.
- FIGS. 9 to 12 comprise a blade 4 and a hammer head 5.
- a blade 4 and a hammer head 5 may, without departing from the scope of the present invention, provide other combinations of tools forming an ice ax, and in particular a blade 4 associated with an ice ax breakdown.
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
- Production, Working, Storing, Or Distribution Of Ice (AREA)
Claims (14)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8716924A FR2623721B1 (fr) | 1987-11-27 | 1987-11-27 | Piolet sans tete |
FR8716924 | 1987-11-27 | ||
FR8803143A FR2627989B2 (fr) | 1987-11-27 | 1988-03-04 | Piolet sans tete |
FR8803143 | 1988-03-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0318401A1 EP0318401A1 (de) | 1989-05-31 |
EP0318401B1 true EP0318401B1 (de) | 1991-03-27 |
Family
ID=26226373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880420385 Expired - Lifetime EP0318401B1 (de) | 1987-11-27 | 1988-11-17 | Eispickel ohne Kopf |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0318401B1 (de) |
DE (1) | DE3862188D1 (de) |
FR (1) | FR2627989B2 (de) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT377917B (de) * | 1981-10-19 | 1985-05-28 | Kroesbacher Stahlwaren Franz | Mehrzweckgeraet mit austauschbarem werkzeug |
-
1988
- 1988-03-04 FR FR8803143A patent/FR2627989B2/fr not_active Expired - Lifetime
- 1988-11-17 EP EP19880420385 patent/EP0318401B1/de not_active Expired - Lifetime
- 1988-11-17 DE DE8888420385T patent/DE3862188D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2627989B2 (fr) | 1990-07-20 |
EP0318401A1 (de) | 1989-05-31 |
DE3862188D1 (de) | 1991-05-02 |
FR2627989A2 (fr) | 1989-09-08 |
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