EP0283377B1 - Bushing for connecting a cylindrical or oval handle to a conical bore of a tool - Google Patents

Bushing for connecting a cylindrical or oval handle to a conical bore of a tool Download PDF

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Publication number
EP0283377B1
EP0283377B1 EP88400528A EP88400528A EP0283377B1 EP 0283377 B1 EP0283377 B1 EP 0283377B1 EP 88400528 A EP88400528 A EP 88400528A EP 88400528 A EP88400528 A EP 88400528A EP 0283377 B1 EP0283377 B1 EP 0283377B1
Authority
EP
European Patent Office
Prior art keywords
handle
tool
bushing
eye
cavities
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
Application number
EP88400528A
Other languages
German (de)
French (fr)
Other versions
EP0283377A1 (en
Inventor
Georges Mauger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EDME-LACROIX SA
Original Assignee
EDME-LACROIX SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EDME-LACROIX SA filed Critical EDME-LACROIX SA
Priority to AT88400528T priority Critical patent/ATE77786T1/en
Publication of EP0283377A1 publication Critical patent/EP0283377A1/en
Application granted granted Critical
Publication of EP0283377B1 publication Critical patent/EP0283377B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/34—Attaching handles to the implements by pressing the handle on the implements; using cement or molten metal, e.g. casting, moulding, by welding or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings
    • B25G3/10—Socket, tang, or like fixings with elastic, taper, or other self-grip socket or tang

Definitions

  • the invention relates to a socket for connecting a handle to a conical eye of a tool according to the preamble of claim 1.
  • a socket of this type is known in the prior art from document DE-U-1 953599.
  • None of these sockets is designed to be press fitted between the eye of the tool and the end of the handle nor to allow the use of a standard handle, of regular section, on a tool with eye of any section, such as, for example, a cylindrical handle in an oval section eye.
  • This invention aims to remedy these drawbacks.
  • This invention as it is characterized, solves the problem of creating a socket, intended to be mounted at the end of a handle of standard and regular section, with a view to adapting it, to the fitting of the '' tools with conical eyes such as picks, hoes, serfouettes, certain hammers, weights, axes and oval picks.
  • This socket consisting of a piece of semi-rigid material, externally conforming to the shape of the eye of the tool, and internally that of the handle of the tool, the bore of which has asperities intended to be housed in cavities of the same shape and of the same dimension produced at the periphery of the handle, is characterized in that the asperities and the cavities have a right triangular section whose short side of the right angle is located towards the end of the handle on which attaches the tool and in that the connection between said roughness and said cavities secures the socket with a handle of regular section.
  • the sleeve is placed on the handle by force fitting.
  • the sleeve is placed on the handle by overmolding.
  • the advantages obtained consist essentially in that it makes it possible to obtain a saving of wood of approximately 30%, a simplification of the machining, and a greater standardization of the handles without reducing the mechanical characteristics of these.
  • the drawing represents an assembly consisting of a pickaxe 1 in the eye of which is fixed a cylindrical handle 2 by means of a plastic sleeve 3.
  • the sleeve 3 the bore of which comprises triangular ribs 3a, has been, taking into account the section in right triangle and the orientation of the latter, force fitted on one of the ends of the handle 2 having grooves 2a of the same section and the same spacing, before conventional fitting of the pick 1 over the socket 3, the shape of which corresponds to that of the eye of the pick 1.
  • the bore of the sleeve 3 is closed on the side of the base of the cone by a wall 3b which seals the assembly and thus prevents deterioration of the wood.
  • the socket according to the invention is intended mainly for the fitting of tools with a conical eye, but it could also be used, with profit, to ensure the adaptation of tools with cylindrical eye on standard handles provided that the socket is suitable for this kind of eye, that it has a shoulder at its end to prevent the tool from being pulled out and that its outer wall offers a slight taper in order to obtain a fastening of the assembly by tightening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Prostheses (AREA)
  • Insulating Bodies (AREA)
  • Processing Of Terminals (AREA)
  • Cable Accessories (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dowels (AREA)

Abstract

This bushing consists of a conical piece made from semi-rigid material (3), matching externally the shape of the bore (1a) of a tool (1) comprising a hole having a cross-section corresponding to that of the handle (2). The hole of the bushing comprises asperities (3a) intended to lodge in cavities (2a) made in the periphery of the handle. <IMAGE>

Description

L'invention concerne une douille de raccordement d'un manche à un oeil conique d'un outil selon le préambule de la revendication 1. Une douille de ce type est connue dans l'art antérieur par le document DE-U-1 953599.The invention relates to a socket for connecting a handle to a conical eye of a tool according to the preamble of claim 1. A socket of this type is known in the prior art from document DE-U-1 953599.

Jusqu'alors la partie conique nécessaire à l'emmanchage d'outils, dits à emmanchage par dessus la douille ou à douille'conique, était usinée directement dans la masse; ce qui obligeait à utiliser des sections importantes. Pour les pioches rondes, par exemple, il fallait un carrelet de 54 X 54 mm qui devait être réduit mécaniquement à 38 mm de diamètre pour la partie du manche sans cône, avec tout ce que cela impliquait comme gaspillage de matière, d'énergie ou de temps. Les outils à emmanchement conique ou ovale, tels que les pioches ou les masses, étaient ensuite engagés à force sur la partie conique du manche. Les outils spéciaux, sortant des standards habituels, exigeaient des manches de section particulière qui devraient être réalisés spécialement.Hitherto the conical part necessary for the fitting of tools, said to be fitted over the socket or with a tapered socket, was machined directly in the mass; which required the use of large sections. For the round picks, for example, a 54 X 54 mm square was needed which had to be mechanically reduced to 38 mm in diameter for the part of the handle without cone, with all that that implied as waste of material, energy or of time. The tools with conical or oval fitting, such as picks or weights, were then forcibly engaged on the conical part of the handle. The special tools, going beyond the usual standards, required handles of particular section which should be specially made.

On connaît déjà d'après les documents US-4367969 et DE-U-1953599 des douilles de raccordement d'un manche sur un outil. Le premier de ces documents décrit, une douille en deux parties, destinée au raccordement de manches en fibre de verre, comportant pour cela, deux rainures latérales dans lesquelles pénètrent des nervures faisant corps avec chacune des parties constituant la douille. Cette douille est destinée à l'adaptation, en utilisant des demi-coquilles intermédiaires, de la forme et de la dimension du manche à celle de l'oeil de l'outil. Le second de ces documents décrit, notamment, une douille conique destinée à se visser à l'extrémité d'un manche en vue de la solidarisation de celui-ci à un outil à oeil conique. Aucune de ces douilles n'est conçue pour s'emmancher à force entre l'oeil de l'outil et l'extrémité du manche ni pour permettre l'utilisation d'un manche standard, de section régulière, sur un outil à oeil de section quelconque, tel que, par exemple, un manche cylindrique dans un oeil de section ovale.Already known from documents US-4367969 and DE-U-1953599 sleeves for connecting a handle to a tool. The first of these documents describes a socket in two parts, intended for the connection of fiberglass sleeves, comprising for this purpose two lateral grooves into which penetrate ribs integral with each of the parts constituting the socket. This socket is intended for adaptation, using intermediate half-shells, of the shape and size of the handle to that of the eye of the tool. The second of these documents describes, in particular, a conical socket intended to be screwed to the end of a handle for the purpose of securing the latter to a tool with conical eye. None of these sockets is designed to be press fitted between the eye of the tool and the end of the handle nor to allow the use of a standard handle, of regular section, on a tool with eye of any section, such as, for example, a cylindrical handle in an oval section eye.

La présente invention a pour but de remédier à ces inconvénients. Cette invention, telle qu'elle se caractérise résout le problème consistant à créer une douille, destinée à se monter à l'extrémité d'un manche de section standard et régulière, en vue d'adapter celui-ci, à l'emmanchage d'outils à oeil conique tels que les pioches, les houes, les serfouettes, certains marteaux, les masses, les haches et les pioches ovales.The present invention aims to remedy these drawbacks. This invention, as it is characterized, solves the problem of creating a socket, intended to be mounted at the end of a handle of standard and regular section, with a view to adapting it, to the fitting of the '' tools with conical eyes such as picks, hoes, serfouettes, certain hammers, weights, axes and oval picks.

Cette douille, constituée d'une pièce en matière semi-rigide, épousant extérieurement la forme de l'oeil de l'outil, et intérieurement celle du manche de l'outil, dont l'alésage comporte des aspérités destinées à venir se loger dans des cavités de même forme et de même dimension réalisées à la périphérie du manche, se caractérise en ce que les aspérités et les cavités ont une section triangulaire rectangle dont le petit côté de l'angle droit est situé vers l'extrémité du manche sur laquelle se fixe l'outil et en ce que la liaison entre lesdites aspérités et lesdites cavités assure la solidarisation de la douille avec un manche de section régulière.This socket, consisting of a piece of semi-rigid material, externally conforming to the shape of the eye of the tool, and internally that of the handle of the tool, the bore of which has asperities intended to be housed in cavities of the same shape and of the same dimension produced at the periphery of the handle, is characterized in that the asperities and the cavities have a right triangular section whose short side of the right angle is located towards the end of the handle on which attaches the tool and in that the connection between said roughness and said cavities secures the socket with a handle of regular section.

Selon un premier mode d'utilisation,la douille est mise en place sur le manche par emmanchement à force.According to a first mode of use, the sleeve is placed on the handle by force fitting.

Selon un second mode d'utilisation/la douille est mise en place sur le manche par surmoulage.According to a second mode of use / the sleeve is placed on the handle by overmolding.

Les avantages obtenus, grâce à cette invention, consistent essentiellement en ceci qu'elle permet d'obtenir une économie de bois d'environ 30%, une simplification de l'usinage, et une plus grande standardisation des manches sans réduire les caractéristiques mécaniques de ceux-ci.The advantages obtained, thanks to this invention, consist essentially in that it makes it possible to obtain a saving of wood of approximately 30%, a simplification of the machining, and a greater standardization of the handles without reducing the mechanical characteristics of these.

D'autres caractéristiques et avantages apparaîtront dans la description qui va suivre de l'emmanchement d'une pioche, à oeil conique et ovale, sur un manche cylindrique par l'intermédiaire d'une douille conique de section ovale, donné à titre d'exemple non limitatif au regard du dessin annexé représentant une vue de côté, en coupe, de l'assemblage.Other characteristics and advantages will appear in the following description of the fitting of a pickaxe, with a conical and oval eye, on a cylindrical handle by means of a conical sleeve of oval section, given by way of non-limiting example with regard to the attached drawing showing a side view, in section, of the assembly.

Le dessin représente un assemblage constitué d'une pioche 1 dans l'oeil la de laquelle est fixé un manche cylindrique 2 par l'intermédiaire d'une douille en matière plastique 3.The drawing represents an assembly consisting of a pickaxe 1 in the eye of which is fixed a cylindrical handle 2 by means of a plastic sleeve 3.

En examinant ce dessin plus en détail, on remarque que la douille 3, dont l'alésage comporte des nervures triangulaires 3a, a été, compte-tenu de la section en triangle rectangle et de l'orientation de ces dernières, emmanchée à force sur l'une des extrémités du manche 2 comportant des rainures 2a de même section et de même espacement, avant emmanchement classique de la pioche 1 par dessus la douille 3, dont la forme correspond à celle de l'oeil la de la pioche 1.By examining this drawing in more detail, it is noted that the sleeve 3, the bore of which comprises triangular ribs 3a, has been, taking into account the section in right triangle and the orientation of the latter, force fitted on one of the ends of the handle 2 having grooves 2a of the same section and the same spacing, before conventional fitting of the pick 1 over the socket 3, the shape of which corresponds to that of the eye of the pick 1.

Comme on le voit, l'alésage de la douille 3 est fermé du côté de la base du cône par une paroi 3b qui assure l'étanchéité de l'assemblage et évite ainsi la détérioration du bois.As can be seen, the bore of the sleeve 3 is closed on the side of the base of the cone by a wall 3b which seals the assembly and thus prevents deterioration of the wood.

La douille selon l'invention est destinée principalement à l'emmanchement d'outils à oeil conique, mais elle pourrait être utilisée aussi, avec profit, pour assurer l'adaptation d'outils à oeil cylindrique sur des manches standard sous réserve que la douille soit adaptée à cette sorte d'oeil, qu'elle comporte un épaulement à son extrémité pour empêcher le démanchage de l'outil et que sa paroi extérieure offre une légère conicité afin d'obtenir une solidarisation de l'ensemble par serrage.The socket according to the invention is intended mainly for the fitting of tools with a conical eye, but it could also be used, with profit, to ensure the adaptation of tools with cylindrical eye on standard handles provided that the socket is suitable for this kind of eye, that it has a shoulder at its end to prevent the tool from being pulled out and that its outer wall offers a slight taper in order to obtain a fastening of the assembly by tightening.

Claims (3)

1. Bushing for connecting a handle to a conical eye of a tool, constituted by a piece made of semi-rigid material externally following the form of the eye of the tool and internally that of the handle whose bore comprises protrusions intended to come to lodge in cavities of the same form made at the periphery of the handle, characterised in that the protrusions and the cavities have a triangular/rectangular cross-section of which the small side of the right angle is situated towards the end of the handle onto which the tool is fixed and in that the link between the said protrusions and the said cavities ensures the solid fixing of the bushing to a handle of regular cross-section.
2. Bushing according to Claim 1, characterised in that it is overmoulded onto the handle.
3. Bushing according to Claim 1, characterised in that it is fitted on the handle by being force-fitted as a sleeve.
EP88400528A 1987-03-19 1988-03-04 Bushing for connecting a cylindrical or oval handle to a conical bore of a tool Expired - Lifetime EP0283377B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88400528T ATE77786T1 (en) 1987-03-19 1988-03-04 CONNECTION BETWEEN A CYLINDRICAL OR OVAL STEM AND THE CONICAL EYE OF A TOOL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8703945A FR2612442B1 (en) 1987-03-19 1987-03-19 CONNECTING SOCKET OF A CYLINDRICAL OR OVAL HANDLE TO THE CONICAL EYE OF A TOOL
FR8703945 1987-03-19

Publications (2)

Publication Number Publication Date
EP0283377A1 EP0283377A1 (en) 1988-09-21
EP0283377B1 true EP0283377B1 (en) 1992-07-01

Family

ID=9349281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88400528A Expired - Lifetime EP0283377B1 (en) 1987-03-19 1988-03-04 Bushing for connecting a cylindrical or oval handle to a conical bore of a tool

Country Status (5)

Country Link
EP (1) EP0283377B1 (en)
AT (1) ATE77786T1 (en)
DE (1) DE3872414T2 (en)
FR (1) FR2612442B1 (en)
PT (1) PT87021B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5031272A (en) * 1990-02-28 1991-07-16 Carmien Joseph A Tool handle and method of attaching a handle to a percussive tool head
FR2729185A1 (en) * 1995-01-09 1996-07-12 Mathou Marcel Nozzle that can fit on cylindrical bar
GB2364013B (en) * 2001-10-23 2002-05-29 James Melia The garden tool
FR2873053B1 (en) * 2004-07-19 2008-01-04 Leborgne Sa DEVICE FOR MOUNTING AND FASTENING A HANDLE TO A HITCH TOOL
US20130036877A1 (en) * 2008-12-09 2013-02-14 Ames True Temper, Inc. Coupling for handle and tool head
DE102013206601A1 (en) * 2012-04-13 2013-10-17 Montfort Kunststofftechnik Gmbh Holzumspritzung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB846702A (en) * 1956-07-12 1960-08-31 Wright Howard Clayton Ltd Improvements relating to hand tools
DE1953599U (en) * 1966-08-18 1967-01-12 Willi Hoetz HAMMER HANDLE AND HEAD MOUNTING.
GB1399582A (en) * 1973-07-03 1975-07-02 Nupla Corp Adapter for fiberglass handles for tools
US4188703A (en) * 1975-06-26 1980-02-19 Fish Herbert L Impact tool, handle assembly therefor, and method of attaching handle to head
US4139930A (en) * 1977-10-11 1979-02-20 Cox Charles T All-metal hammer handle adapter construction
DE2747541A1 (en) * 1977-10-22 1979-04-26 Eutiner Buerstenfabrik Berger Handle holder outer cover and inner walling - have successively ringed or spiral grooves to accommodate conically ended handle
US4287640A (en) * 1979-08-17 1981-09-08 Ixl Manufacturing Co., Inc. Tool handle and method of making same
US4367969A (en) * 1979-08-31 1983-01-11 Carmien Joseph A Bushing for attaching fiberglass tool handles
US4291998A (en) * 1980-06-05 1981-09-29 The Budd Company Replacement handle for a tool

Also Published As

Publication number Publication date
DE3872414D1 (en) 1992-08-06
PT87021B (en) 1995-03-01
ATE77786T1 (en) 1992-07-15
PT87021A (en) 1989-03-30
FR2612442A1 (en) 1988-09-23
FR2612442B1 (en) 1989-10-13
EP0283377A1 (en) 1988-09-21
DE3872414T2 (en) 1993-01-28

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