EP0615819A1 - Percussion tool handle protector and its assembly method - Google Patents

Percussion tool handle protector and its assembly method Download PDF

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Publication number
EP0615819A1
EP0615819A1 EP94420074A EP94420074A EP0615819A1 EP 0615819 A1 EP0615819 A1 EP 0615819A1 EP 94420074 A EP94420074 A EP 94420074A EP 94420074 A EP94420074 A EP 94420074A EP 0615819 A1 EP0615819 A1 EP 0615819A1
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EP
European Patent Office
Prior art keywords
eye
handle
sleeve
mass
conical part
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.)
Withdrawn
Application number
EP94420074A
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German (de)
French (fr)
Inventor
Charles Moulin
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.)
Forges de la Loire Et De Milourd Moulin Blanc Ets SA
Original Assignee
Forges de la Loire Et De Milourd Moulin Blanc Ets SA
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Publication date
Application filed by Forges de la Loire Et De Milourd Moulin Blanc Ets SA filed Critical Forges de la Loire Et De Milourd Moulin Blanc Ets SA
Publication of EP0615819A1 publication Critical patent/EP0615819A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D1/00—Hand hammers; Hammer heads of special shape or materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K25/00—Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components

Definitions

  • the second drawback stems from the fact that the translational connection of the sleeve with the mass is unidirectional and does not positively oppose the extraction of the mass from the handle. It follows that, when the top of the handle is very dry and crumbles, especially in the absence of blocking resin, this handle no longer ensures the setting in translation in the opposite direction to that provided by the sleeve and allows therefore the dismantling of the tool, with the risk that this entails for the user and his environment.
  • the object of the present invention is to remedy these drawbacks by providing a handle protector suitable for standardized eye masses, elliptical or oblong, striking tools, and ensuring, in complete safety for the user, protection and reinforcement. of the handle.
  • the section of the protector engaging the biconical eye extends over the entire length of the eye and comprises, in the extension of its lower conical part, conforming to the internal shape of the part of the eye turned towards the handle, an upper conical part, of conicity opposite to the lower conical part, conforming to the other part of the eye and cooperating with this other conical part to ensure its wedging in bidirectional translation in the mass of the tool .
  • the reinforcing sleeve is positively linked to the mass and cannot be separated from it.
  • Another advantage of this construction is that the socket, thus mounted, has internally a biconical opening making it possible to ensure an excellent connection with the handle with the help of known and proven connection techniques.
  • the invention also relates to the method for mounting this protector.
  • the hammer is composed of a mass 2 and a handle 3.
  • the mass 2 is crossed by an eye 4 which, as shown in Figure 2, has an elliptical cross section and, as shown in the figure 1, is biconical vertically, that is to say comprises a lower conical part 5a, flared downwards, an upper conical part 5b, flared upwards, and an intermediate zone shown diagrammatically by the lines 6a-6b.
  • the upper part of the handle 3 is protected near the mass 2 by a protective sleeve 7 which is made of metal and the upper section of which engages the eye.
  • the socket 7 has, from its base to the area 8 to come into coincidence with the straight line 6b, between the cones 5a and 5b of the mass , a frustoconical part 9a flared downwards, that is to say whose concavity is turned downwards.
  • the sleeve 7 is extended by a straight part 9b, that is to say by a part whose generatrices are parallel to its longitudinal axis. It is obvious that the cross section of this part is identical, in shape and dimensions, to the cross section of the eye, the transition zone 6a-6b between its conical parts 5a and 5b.
  • the sleeve 7 can be easily mounted in the eye 4 of the mass 2.
  • its upper part 9b is flared by means of a punch, not shown, having shapes and dimensions which are homothetic to the shapes. and dimensions of the upper conical part 5b of the eye, and more precisely having a dimension determined to press the part 9b of the sleeve 7 against the internal face of the conical part 5b of the eye 4.
  • the sleeve 7 is wedged in translation in both directions relative to the mass 2, on one side by the upper part of its part 9a resting on the part 5a of the eye, and, in the other direction, by its conical part 9′b, bearing against the conical part 5b of the eye 4.
  • this end 3a comprises a machining 10 of depth equal to l thickness of the sleeve 7, so that at the end of fitting, and as shown in FIG. 5, the sleeve 7 comes into contact with a shoulder 11 and is flush with the handle itself 3.
  • Figure 5 shows that, during fitting, the end face 3b of the handle 3 is flush with the corresponding face 2a of the mass 2, in order to best use the elasticity of the wood making up the end of the handle, elasticity allowing this end to come into contact with the upper part 9'b of the sleeve 7, after having passed into the zone 6a-6b, of smaller section of the eye 4.
  • the periphery of the end of the handle is pressed against the internal face of the upper part 9'b of the sleeve 7 by engagement of a wedge-shaped means, for example, of a ring 12 provided with notches 12a.
  • connection can also be completed by pouring a resin in the interval which, not shown, is then formed in the eye between the end face 3b of the handle and the upper face 2a of the mass 2.
  • the protector according to the invention not only provides effective protection of the upper part of the handle 3, but also allows the use of masses comprising a standardized eye, therefore not requiring the cost of modifying the conditions of manufacture of the masses, while allowing to obtain an excellent connection of the sleeve and the handle with the mass.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

This protector is of the type composed of a metal sleeve (7) comprising a section enveloping the upper end of the handle (3) and a section engaging into the biconical eye, of elliptical or oblong section, of the head (2) and exhibiting, on the handle side, a lower frustoconical part (9a) which matches the internal shape of the eye. According to the invention, the section of the protector engaging into the biconical eye extends over the entire length of the eye and includes, in the extension of its lower conical part (9a) matching the internal shape of the conical part (5a) of the eye pointing towards the handle, an upper conical part (9'b) of opposite conicity to the lower conical part (9a) matching the upper conical part (5b) of the eye and interacting with this conical part in order to ensure two-way immobilisation in terms of translation within the head (2) of the tool. The method essentially consists in inserting into the eye a blank of the sleeve, including a straight neck, and in deforming the end of this blank using a punch in order to give it a conical shape which matches that of the part (5b) of the eye. <IMAGE>

Description

Il est connu que la majorité des accidents du travail causés par les outils à main sont provoqués par des outils de frappe, en raison, soit d'une mauvaise utilisation, soit d'une rupture ou d'une désolidarisation du manche avec l'outil.It is known that the majority of accidents at work caused by hand tools are caused by impact tools, due either to improper use, or to a break or separation of the handle from the tool .

Si les problèmes de liaison du manche avec la masse sont en général résolus, soit en utilisant des coins ou des douilles métalliques crantées de coincement, soit en utilisant une résine synthétique d'obturation de l'oeil pour empêcher la dessiccation du manche, aucune solution efficace n'a été apportée à ce jour à la protection du manche en bois pour éviter sa rupture ou sa détérioration.If the problems of connection of the handle with the mass are generally solved, either by using wedges or notched metallic sockets of jamming, or by using a synthetic resin obturation of the eye to prevent the desiccation of the handle, no solution effective to date has been made to protect the wooden handle to prevent it from breaking or deteriorating.

Pourtant, il n'est pas rare, par exemple avec un marteau, qu'en essayant de frapper sur un outil telle qu'une broche, l'utilisateur maîtrise mal la trajectoire de la masse, et frappe sur la broche avec le sommet du manche, à la base de la masse, au lieu de frapper avec la masse. La répétition de tels incidents casse les fibres constitutives du manche et favorise sa rupture ultérieure.However, it is not uncommon, for example with a hammer, that when trying to strike on a tool such as a spindle, the user has little control over the path of the mass, and strikes the spindle with the top of the handle, at the base of the mass, instead of striking with the mass. The repetition of such incidents breaks the constituent fibers of the handle and promotes its subsequent rupture.

Pour remédier à cela, il est connu, notamment par DE A 1 301 779, de protéger le haut du manche au moyen d'une douille métallique s'engageant partiellement dans l'oeil de la masse et augmentant la longueur d'emmanchement.To remedy this, it is known, in particular from DE A 1 301 779, to protect the top of the handle by means of a metal sleeve partially engaging the eye of the body and increasing the fitting length.

Cette protection présente deux inconvénients limitant son application. Le premier résulte de l'obligation de réaliser l'oeil de la masse et le manche avec des formes et dimensions différentes de celles normalisées, ce qui empêche d'utiliser la masse avec des manches standard, et le manche avec des masses normalisées, et surtout conduit à des surcoûts de fabrication de la masse.This protection has two drawbacks limiting its application. The first results from the obligation to make the eye of the mass and the handle with shapes and dimensions different from those standardized, which prevents the use of the mass with standard sleeves, and the handle with standardized masses, and above all leads to additional manufacturing costs for the mass.

Le second inconvénient provient du fait que la liaison en translation de la douille avec la masse est unidirectionnelle et ne s'oppose pas positivement à l'extraction de la masse hors du manche. Il en résulte que, lorsque le sommet du manche est très sec et s'effrite, notamment en l'absence de résine de blocage, ce manche n'assure plus le calage en translation dans le sens opposé à celui assuré par la douille et permet donc le démanchement de l'outil, avec le risque que cela comporte pour l'utilisateur et son environnement.The second drawback stems from the fact that the translational connection of the sleeve with the mass is unidirectional and does not positively oppose the extraction of the mass from the handle. It follows that, when the top of the handle is very dry and crumbles, especially in the absence of blocking resin, this handle no longer ensures the setting in translation in the opposite direction to that provided by the sleeve and allows therefore the dismantling of the tool, with the risk that this entails for the user and his environment.

La présente invention a pour but de remédier à ces inconvénients en fournissant un protecteur de manche convenant pour les masses à oeil normalisé, elliptique ou oblong, des outils de frappe, et assurant, en toute sécurité pour l'utilisateur, la protection et le renfort du manche.The object of the present invention is to remedy these drawbacks by providing a handle protector suitable for standardized eye masses, elliptical or oblong, striking tools, and ensuring, in complete safety for the user, protection and reinforcement. of the handle.

Selon la présente invention, la section du protecteur s'engageant dans l'oeil biconique s'étend sur toute la longueur de l'oeil et comporte, dans le prolongement de sa partie conique inférieure, épousant la forme interne de la partie de l'oeil tourné vers le manche, une partie conique supérieure, de conicité opposée à la partie conique inférieure, épousant l'autre partie de l'oeil et coopérant avec cette autre partie conique pour assurer son calage en translation bidirectionnelle dans la masse de l'outil.According to the present invention, the section of the protector engaging the biconical eye extends over the entire length of the eye and comprises, in the extension of its lower conical part, conforming to the internal shape of the part of the eye turned towards the handle, an upper conical part, of conicity opposite to the lower conical part, conforming to the other part of the eye and cooperating with this other conical part to ensure its wedging in bidirectional translation in the mass of the tool .

Grâce à cet agencement, la douille de renfort est liée positivement à la masse et ne peut pas en être désolidarisée. Un autre avantage de cette construction est que la douille, ainsi montée, présente intérieurement une ouverture biconique permettant d'assurer une excellente solidarisation avec le manche avec l'aide des techniques de liaison connues et ayant fait leur preuve.Thanks to this arrangement, the reinforcing sleeve is positively linked to the mass and cannot be separated from it. Another advantage of this construction is that the socket, thus mounted, has internally a biconical opening making it possible to ensure an excellent connection with the handle with the help of known and proven connection techniques.

L'invention concerne également le procédé pour le montage de ce protecteur.The invention also relates to the method for mounting this protector.

Ce procédé consiste :

  • à réaliser la douille de protection en lui donnant, d'une part, une forme tronconique depuis sa base jusqu'à sa partie correspondant à la zone d'inversion de la conicité de l'oeil biconique de la masse, et, d'autre part, une forme droite, parallèle à son axe longitudinal, depuis cette partie jusqu'à son extrémité libre,
  • à introduire l'extrémité supérieure de la douille dans l'oeil de la masse,
  • à évaser la partie supérieure droite de la douille au moyen d'un poinçon conique, de forme homothétique à celle de la partie supérieure de l'oeil,
  • et à emmancher de force l'extrémité du manche dans la douille en forçant cette extrémité dans l'oeil.
This process consists of:
  • to produce the protective sleeve by giving it, on the one hand, a frustoconical shape from its base to its part corresponding to the zone of inversion of the taper of the biconical eye of the mass, and, on the other hand part, a straight shape, parallel to its longitudinal axis, from this part to its free end,
  • to introduce the upper end of the sleeve into the eye of the mass,
  • to flare the upper right part of the socket by means of a conical punch, of shape homothetic to that of the upper part of the eye,
  • and forcing the end of the handle into the socket by forcing this end into the eye.

On notera, qu'à la différence du procédé d'emmanchement connu jusqu'à ce jour, la masse est fournie en étant liée à sa douille de protection, ce qui simplifie l'emmanchement du manche.It will be noted that, unlike the fitting process known to date, the mass is supplied by being linked to its protective sleeve, which simplifies fitting the handle.

D'autres caractéristiques et avantages ressortiront de la description qui suit en référence au dessin schématique annexé, représentant à titre d'exemple non limitatif, une forme d'exécution de ce protecteur dans le cadre de son application à une masse de marteau à oeil elliptique.

  • Figure 1 est une vue de côté avec coupe partielle de la masse du marteau,
  • Figure 2 est une vue partielle en plan par dessus montrant, plus en détails, la forme de l'oeil,
  • Figure 3 est une vue de côté en coupe transversale de la douille avant son montage dans la masse,
  • Figure 4 est une vue de côté avec coupe partielle montrant la masse solidaire de sa douille de protection lors de l'emmanchement du manche,
  • Figure 5 est une vue de côté en coupe partielle du marteau à l'état emmanché.
Other characteristics and advantages will emerge from the description which follows with reference to the appended diagrammatic drawing, representing by way of nonlimiting example, an embodiment of this protector within the framework of its application to a mass of elliptical eye hammer. .
  • Figure 1 is a side view with partial section of the hammer mass,
  • FIG. 2 is a partial plan view from above showing, in more detail, the shape of the eye,
  • FIG. 3 is a side view in cross section of the sleeve before it is mounted in the mass,
  • FIG. 4 is a side view with partial section showing the mass secured to its protective sleeve during the fitting of the handle,
  • Figure 5 is a side view in partial section of the hammer in the fitted state.

De façon connue, le marteau est composé d'une masse 2 et d'un manche 3. La masse 2 est traversée par un oeil 4 qui, comme le montre la figure 2, a une section transversale elliptique et, comme le montre la figure 1, est biconique verticalement, c'est à dire comporte une partie conique inférieure 5a, évasée vers le bas, une partie conique supérieure 5b, évasée vers le haut, et une zone intermédiaire schématisée par les droites 6a-6b.In known manner, the hammer is composed of a mass 2 and a handle 3. The mass 2 is crossed by an eye 4 which, as shown in Figure 2, has an elliptical cross section and, as shown in the figure 1, is biconical vertically, that is to say comprises a lower conical part 5a, flared downwards, an upper conical part 5b, flared upwards, and an intermediate zone shown diagrammatically by the lines 6a-6b.

La partie supérieure du manche 3 est protégée à proximité de la masse 2 par une douille de protection 7 qui est réalisée en métal et dont la section supérieure s'engage dans l'oeil. Comme le montre la figure 3, avant son montage dans l'oeil 4 du marteau, la douille 7 comporte, depuis sa base jusqu'à la zone 8 devant venir en coïncidence avec la droite 6b, entre les cônes 5a et 5b de la masse, une partie tronconique 9a évasée vers le bas, c'est à dire dont la concavité est tournée vers le bas. Au-delà de la zone 8 et jusqu'à son extrémité supérieure, la douille 7 est prolongée par une partie droite 9b, c'est à dire par une partie dont les génératrices sont parallèles à son axe longitudinal. Il est évident que la section transversale de cette partie est identique, en forme et dimensions, à la section transversale de l'oeil dont la zone de transition 6a-6b entre ses parties coniques 5a et 5b.The upper part of the handle 3 is protected near the mass 2 by a protective sleeve 7 which is made of metal and the upper section of which engages the eye. As shown in Figure 3, before mounting in the eye 4 of the hammer, the socket 7 has, from its base to the area 8 to come into coincidence with the straight line 6b, between the cones 5a and 5b of the mass , a frustoconical part 9a flared downwards, that is to say whose concavity is turned downwards. Beyond the zone 8 and up to its upper end, the sleeve 7 is extended by a straight part 9b, that is to say by a part whose generatrices are parallel to its longitudinal axis. It is obvious that the cross section of this part is identical, in shape and dimensions, to the cross section of the eye, the transition zone 6a-6b between its conical parts 5a and 5b.

Grâce à cet agencement, la douille 7 se monte sans difficulté dans l'oeil 4 de la masse 2. Après ce montage, sa partie supérieure 9b est évasée au moyen d'un poinçon, non représenté, ayant des formes et dimensions homothétiques aux formes et dimensions de la partie conique supérieure 5b de l'oeil, et plus précisément ayant une dimension déterminée pour plaquer la partie 9b de la douille 7 contre la face interne de la partie conique 5b de l'oeil 4.Thanks to this arrangement, the sleeve 7 can be easily mounted in the eye 4 of the mass 2. After this assembly, its upper part 9b is flared by means of a punch, not shown, having shapes and dimensions which are homothetic to the shapes. and dimensions of the upper conical part 5b of the eye, and more precisely having a dimension determined to press the part 9b of the sleeve 7 against the internal face of the conical part 5b of the eye 4.

Pour éviter toute déformation de la douille 7 pendant cette opération, un autre poinçon ayant les formes et dimensions de la partie inférieure 9a de la douille peut être engagé à l'intérieur de cette partie, pendant que le poinçon supérieur assure l'évasement de la partie supérieure 9b.To avoid any deformation of the sleeve 7 during this operation, another punch having the shapes and dimensions of the lower part 9a of the sleeve can be engaged inside this part, while the upper punch ensures the flaring of the upper part 9b.

A la fin de cette opération, et comme montré à la figure 4, la douille 7 est calée en translation dans les deux sens par rapport à la masse 2, d'un côté par la partie supérieure de sa partie 9a en appui sur la partie 5a de l'oeil, et, dans l'autre sens, par sa partie conique 9′b, en appui contre la partie conique 5b de l'oeil 4.At the end of this operation, and as shown in FIG. 4, the sleeve 7 is wedged in translation in both directions relative to the mass 2, on one side by the upper part of its part 9a resting on the part 5a of the eye, and, in the other direction, by its conical part 9′b, bearing against the conical part 5b of the eye 4.

A ce stade, la masse 2 avec sa douille 7 peuvent être stockées en l'état ou directement emmanchées sur l'extrémité 3a du manche 3. Dans la forme d'exécution représentée, cette extrémité 3a comporte un usinage 10 de profondeur égale à l'épaisseur de la douille 7, de manière qu'en fin d'emmanchement, et comme montré à la figure 5, la douille 7 vienne au contact d'un épaulement 11 et affleure le manche proprement dit 3.At this stage, the mass 2 with its socket 7 can be stored as it is or directly fitted onto the end 3a of the handle 3. In the embodiment shown, this end 3a comprises a machining 10 of depth equal to l thickness of the sleeve 7, so that at the end of fitting, and as shown in FIG. 5, the sleeve 7 comes into contact with a shoulder 11 and is flush with the handle itself 3.

La figure 5 montre que, lors de l'emmanchement, la face en bout 3b du manche 3 vient affleurer la face correspondante 2a de la masse 2, afin d'utiliser au mieux l'élasticité du bois composant l'extrémité du manche, élasticité permettant à cette extrémité de venir en contact avec la partie supérieure 9'b de la douille 7, après avoir passé dans la zone 6a-6b, de plus faible section de l'oeil 4.Figure 5 shows that, during fitting, the end face 3b of the handle 3 is flush with the corresponding face 2a of the mass 2, in order to best use the elasticity of the wood making up the end of the handle, elasticity allowing this end to come into contact with the upper part 9'b of the sleeve 7, after having passed into the zone 6a-6b, of smaller section of the eye 4.

Dans la forme d'exécution représentée, la périphérie de l'extrémité du manche est plaquée contre la face interne de la partie supérieure 9'b de la douille 7 par engagement d'un moyen en forme de coin, par exemple, d'une bague 12 munie de crans 12a.In the embodiment shown, the periphery of the end of the handle is pressed against the internal face of the upper part 9'b of the sleeve 7 by engagement of a wedge-shaped means, for example, of a ring 12 provided with notches 12a.

Cette liaison peut aussi être complétée par coulage d'une résine dans l'intervalle qui, non représenté, est alors ménagé dans l'oeil entre la face en bout 3b du manche et la face supérieure 2a de la masse 2.This connection can also be completed by pouring a resin in the interval which, not shown, is then formed in the eye between the end face 3b of the handle and the upper face 2a of the mass 2.

On notera que le protecteur selon l'invention assure, non seulement une protection efficace de la partie supérieure du manche 3, mais permet également d'utiliser des masses comportant un oeil normalisé, donc ne nécessitant pas des frais de modification des conditions de fabrication des masses, tout en permettant d'obtenir un excellente liaison de la douille et du manche avec la masse.It will be noted that the protector according to the invention not only provides effective protection of the upper part of the handle 3, but also allows the use of masses comprising a standardized eye, therefore not requiring the cost of modifying the conditions of manufacture of the masses, while allowing to obtain an excellent connection of the sleeve and the handle with the mass.

Claims (4)

Protecteur de manche d'outils de frappe du type composé d'une douille métallique (7) comprenant une section enveloppant l'extrémité supérieure du manche (3) et une section s'engageant dans l'oeil biconique (4), de section elliptique ou oblongue de la masse (2), et présentant, du côté du manche, une partie tronconique inférieure (9a) épousant la forme interne de l'oeil, caractérisé en ce que sa section s'engageant dans l'oeil biconique (4) s'étend sur toute la longueur de l'oeil et comporte, dans le prolongement de sa partie conique inférieure (9a), épousant la forme interne de la partie conique (5a) de l'oeil tournée vers le manche, une partie conique supérieure (9'b), de conicité opposée à la partie conique inférieure (9a), épousant la partie conique supérieure (5b) de l'oeil et coopérant avec cette partie conique pour assurer son calage bidirectionnel en translation dans la masse (2) de l'outil.Sleeve protector for striking tools of the type composed of a metal sleeve (7) comprising a section enveloping the upper end of the handle (3) and a section engaging the biconical eye (4), of elliptical section or oblong of the mass (2), and having, on the side of the handle, a lower frustoconical part (9a) matching the internal shape of the eye, characterized in that its section engaging the biconical eye (4) extends over the entire length of the eye and comprises, in the extension of its lower conical part (9a), conforming to the internal shape of the conical part (5a) of the eye turned towards the handle, an upper conical part (9′b), of conicity opposite to the lower conical part (9a), matching the upper conical part (5b) of the eye and cooperating with this conical part to ensure its bidirectional setting in translation in the mass (2) of the tool. Protecteur selon la revendication 1, caractérisé en ce que la périphérie de l'extrémité (3a) du manche (3) est plaquée contre la face interne de la partie supérieure conique (9'b) de la douille (7) par un moyen en forme de coin (12) engagé dans cette extrémité du manche.Protector according to claim 1, characterized in that the periphery of the end (3a) of the handle (3) is pressed against the internal face of the conical upper part (9'b) of the sleeve (7) by means of wedge shape (12) engaged in this end of the handle. Protecteur selon l'une quelconque des revendications 1 à 2, caractérisé en ce que la douille (7) coiffe un usinage (10) qui, ménagé à l'extrémité (3a) du manche (3) et lui servant de logement, a une profondeur égale à son épaisseur.A protector according to any one of claims 1 to 2, characterized in that the sleeve (7) a cap machining (10), arranged at the end (3a) of the handle (3) and serving as a housing, has a depth equal to its thickness. Procédé de montage du protecteur selon la revendication 1, caractérisé en ce qu'il consiste : - à réaliser la douille de protection (7) en lui donnant, d'une part, une forme tronconique (9a) depuis sa base jusqu'à sa partie correspondant à la zone (6a-6b) d'inversion de la conicité de l'oeil biconique (4) de la masse, et, d'autre part, une forme droite (9b), parallèle à son axe longitudinal, depuis cette partie (6a-6b) jusqu'à son extrémité libre, - à introduire l'extrémité supérieure de la douille dans l'oeil (4) de la masse, - à évaser la partie supérieure droite (9b) de la douille (7) au moyen d'un poinçon conique, de forme homothétique à celle de la partie supérieure (5b) de l'oeil, - et à emmancher de force l'extrémité (3a) du manche (3) dans la douille (7) en forçant cette extrémité dans l'oeil (4). Protector mounting method according to claim 1, characterized in that it consists: - To make the protective sleeve (7) by giving it, on the one hand, a frustoconical shape (9a) from its base to its part corresponding to the zone (6a-6b) for inversion of the taper of the biconical eye (4) of the mass, and, on the other hand, a straight shape (9b), parallel to its longitudinal axis, from this part (6a-6b) to its free end, - to introduce the upper end of the sleeve into the eye (4) of the mass, - to flare the upper right part (9b) of the socket (7) by means of a conical punch, of shape homothetic to that of the upper part (5b) of the eye, - And force fitting the end (3a) of the handle (3) in the sleeve (7) by forcing this end in the eye (4).
EP94420074A 1993-03-05 1994-03-04 Percussion tool handle protector and its assembly method Withdrawn EP0615819A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9302911A FR2702175B1 (en) 1993-03-05 1993-03-05 HANDLE PROTECTOR FOR HITTING TOOLS AND MOUNTING METHOD THEREOF.
FR9302911 1993-03-05

Publications (1)

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EP0615819A1 true EP0615819A1 (en) 1994-09-21

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EP94420074A Withdrawn EP0615819A1 (en) 1993-03-05 1994-03-04 Percussion tool handle protector and its assembly method

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EP (1) EP0615819A1 (en)
FR (1) FR2702175B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007000124A1 (en) * 2005-06-27 2007-01-04 Erwin Halder Kg Recoilless hammer
US20100071264A1 (en) * 2008-09-19 2010-03-25 Hy-Security Gate, Inc. Coupling apparatus for barrier assemblies and related methods
US9731413B1 (en) * 2016-02-04 2017-08-15 M.J. Huner LLC Overstrike protector
EP2694254B1 (en) * 2011-03-24 2018-02-21 Husqvarna AB Handle protector for a hand tool
CN111775105A (en) * 2020-06-10 2020-10-16 胡嘉强 Hammer assembly quality

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3079156B1 (en) * 2018-03-21 2020-02-28 Mob Mondelin Sas METHOD FOR MANUFACTURING A STRIKING TOOL

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FR2207005A1 (en) * 1972-11-17 1974-06-14 Stanley Works
DE2343486A1 (en) * 1973-08-29 1975-03-13 Peddinghaus Carl Dan Kg Tubular steel handle for hand tools - is held in tool head by expanding tube end by ball or cone
EP0088268A2 (en) * 1982-03-10 1983-09-14 Hans-Herbert Bremer Hammer, the handle of which is fixed to the hammer head by an intermediate socket
DE8325957U1 (en) * 1983-09-09 1984-05-17 Carl Dan. Peddinghaus Gmbh & Co Kg, 5828 Ennepetal Hand hammer
EP0394701A1 (en) * 1989-04-26 1990-10-31 CDP HANDWERKZEUG GMBH &amp; CO. KG Hand hammer
EP0412030A1 (en) * 1989-08-03 1991-02-06 FORGES DE LA LOIRE ET DE MILOURD ETABLISSEMENTS MOULIN BLANC Société Anonyme Device for protection of a handle of a percussive tool and its method of placement
DE9205632U1 (en) * 1992-04-25 1992-06-17 Fa. Hermann Bremer, 5600 Wuppertal Sledgehammers, sledgehammers, etc. weighing 3 kg or more with steel handle protection sleeve

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Publication number Priority date Publication date Assignee Title
FR2137337A1 (en) * 1971-05-12 1972-12-29 Goldenberg Sa
FR2207005A1 (en) * 1972-11-17 1974-06-14 Stanley Works
DE2343486A1 (en) * 1973-08-29 1975-03-13 Peddinghaus Carl Dan Kg Tubular steel handle for hand tools - is held in tool head by expanding tube end by ball or cone
EP0088268A2 (en) * 1982-03-10 1983-09-14 Hans-Herbert Bremer Hammer, the handle of which is fixed to the hammer head by an intermediate socket
DE8325957U1 (en) * 1983-09-09 1984-05-17 Carl Dan. Peddinghaus Gmbh & Co Kg, 5828 Ennepetal Hand hammer
EP0394701A1 (en) * 1989-04-26 1990-10-31 CDP HANDWERKZEUG GMBH &amp; CO. KG Hand hammer
EP0412030A1 (en) * 1989-08-03 1991-02-06 FORGES DE LA LOIRE ET DE MILOURD ETABLISSEMENTS MOULIN BLANC Société Anonyme Device for protection of a handle of a percussive tool and its method of placement
DE9205632U1 (en) * 1992-04-25 1992-06-17 Fa. Hermann Bremer, 5600 Wuppertal Sledgehammers, sledgehammers, etc. weighing 3 kg or more with steel handle protection sleeve

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007000124A1 (en) * 2005-06-27 2007-01-04 Erwin Halder Kg Recoilless hammer
US7703355B2 (en) 2005-06-27 2010-04-27 Erwin Halder Kg Recoilless hammer
US20100071264A1 (en) * 2008-09-19 2010-03-25 Hy-Security Gate, Inc. Coupling apparatus for barrier assemblies and related methods
US8341889B2 (en) * 2008-09-19 2013-01-01 Hy-Security Gate, Inc. Coupling apparatus for barrier assemblies and related methods
EP2694254B1 (en) * 2011-03-24 2018-02-21 Husqvarna AB Handle protector for a hand tool
US10213932B2 (en) 2011-03-24 2019-02-26 Husqvarna Ab Handle protector for a hand tool
US9731413B1 (en) * 2016-02-04 2017-08-15 M.J. Huner LLC Overstrike protector
CN111775105A (en) * 2020-06-10 2020-10-16 胡嘉强 Hammer assembly quality
CN111775105B (en) * 2020-06-10 2022-08-23 永康市德润有色金属有限公司 Hammer assembly quality

Also Published As

Publication number Publication date
FR2702175A1 (en) 1994-09-09
FR2702175B1 (en) 1995-10-27

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