EP0553011B1 - Writing instrument with mechanical pencil or ball point pen - Google Patents

Writing instrument with mechanical pencil or ball point pen Download PDF

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Publication number
EP0553011B1
EP0553011B1 EP93400103A EP93400103A EP0553011B1 EP 0553011 B1 EP0553011 B1 EP 0553011B1 EP 93400103 A EP93400103 A EP 93400103A EP 93400103 A EP93400103 A EP 93400103A EP 0553011 B1 EP0553011 B1 EP 0553011B1
Authority
EP
European Patent Office
Prior art keywords
writing
lead
driving member
instrument
ball
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
EP93400103A
Other languages
German (de)
French (fr)
Other versions
EP0553011A1 (en
Inventor
Jean Morel-A-L'huissier
Honoré Calgaro
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.)
ST Dupont SA
Original Assignee
ST Dupont SA
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Filing date
Publication date
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Publication of EP0553011A1 publication Critical patent/EP0553011A1/en
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Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K27/00—Multiple-point writing implements, e.g. multicolour; Combinations of writing implements
    • B43K27/02—Combinations of pens and pencils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • B43K24/06—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by turning means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K27/00—Multiple-point writing implements, e.g. multicolour; Combinations of writing implements
    • B43K27/003—Multiple-point writing implements, e.g. multicolour; Combinations of writing implements only one holder being used either for the pencil or the pen

Definitions

  • the invention relates to a writing instrument making it possible to write indifferently with a writing device of ball type or of mine type.
  • FR-A-1 004 813 discloses a writing instrument conforming to the preamble part of claim 1.
  • the writing member is mounted directly on the driving element so that it does not receives only a specific writing element mine or ball. Furthermore, it does not allow a determined advance of mine for a writing device with a mine provided with a clamp mechanism or mine mechanism.
  • the object of the invention is to remedy these drawbacks by means of the teaching of claim 1.
  • the driving element is tubular, being constituted by a simple tube mounted sliding inside the body of the instrument, and moved by means of the control member.
  • the action of the control member on this driving element can result from an operation of direct translation of the member by the operator, for example using a finger on an operating end piece, and locking of position of the member on a notched hooking element or be indirect by rotation of this member, leading by a set of cams suitable for the translational action on the driving element with a view to removing or not the member writing itself (its writing tip).
  • the driving element may also be constituted by a part of the body of the instrument itself.
  • a bidle writing member 1 will be referred to as the subassembly (FIG. 1) consisting of a tube filled with ink and provided at one end with a crimped ball, allowing the ink to be transferred from the tube had support on which the user writes, said tube possibly comprising a shoulder 2 on the writing side.
  • a writing device 1 ′ will be called a sub-assembly (FIG. 2) comprising a mine reservoir and a clamp mechanism which, under compression, is likely to bring out portions of mine of a determined length. Said mechanism is of a model commonly available from manufacturers, its operation being based on the fact that during compression thereof, a clamp 4 ( Figure 3) moves, causing in its movement a mine.
  • the clamp At the end of its translational movement, the clamp opens and releases the mine. When the compressive force is released, the forceps back while closing and the lead is retained in its guide 5.
  • This sub-assembly includes a shoulder 2 ′ on the side of the writing tip.
  • Each of the writing members, ball or lead can be provided at the end opposite the writing tip with a connecting element or end piece (respectively 3, 3 '), immobilized at least in translation relative to the writing organ.
  • the connecting element can play several roles. It can first of all have a compensating role in relation to the possible differences in length of the writing organs, lead and ball. Secondly, it acts as an adapter in order to make the ends opposite the writing tip identical in shape and size. Finally, it can provide a practical handling advantage for the user when changing a writing device, for example by having a notched external surface state.
  • the writing members are conventional, as mentioned previously, but they can be integrated into writing instruments according to the invention of various configurations.
  • the writing instrument shown is made up (FIG. 4a) of a lower tube called sheath 11 and of an upper cap 12.
  • the tube 11 has on the writing side a stop 111 on which the writing member comes to bear. .
  • the tube 11 has an external male thread 112.
  • the cap 12 fulfills the function of tubular drive of the writing member, having in the part inside a housing 122 capable of receiving the end 3 or 3 ′ of this writing member and of retaining the latter thanks to an elastic deformation (by fitting).
  • This cap 12 in the form of a tube has an internal female thread 123 capable of receiving the male thread 112 of the tube 11, so as to secure these tubes, and two longitudinal grooves 124 and 125 formed in its thickness ( Figure 4b).
  • An annular elastic member 13 is received in a groove 113 of the tube 11.
  • This plastic member 13 has a protrusion 131, and is immobilized integrally with the tube 11 by means of its curved ends inserted in a slot 114 of the tube 11.
  • the cap 12 comprises a clip 20 and its fixing device 21.
  • the operation of the writing instrument is as follows. The user removes the cap 12 from the tube 11 by unscrewing it, inserts the chosen writing device, using a lead or ball, in the housing 122 of the cap, then screwing it back on the tube 11.
  • the rotation of the cap 12 relative to the tube 11 in the opposite direction causes the writing member to retract, and when the protuberance 131 is located opposite the housing 125 of the cap, the elastic member 13 expands, causing a braking of the rotational movement which indicates to the user that the tip of the writing member has returned inside the pen.
  • FIG. 7 shows the relative positioning of the various members in the retracted position.
  • the rotation of the cap causes the same movement as previously, that is to say the exit from the end of the lead writing device, positioning its shoulder 2 ′ substantially in abutment on the stop 111 of the sheath ( figure 8). If the user prolongs this rotation by passing the protuberance 131 beyond the housing 124, he thus causes a new advance of the mine mechanism which will ensure the compression of the writing member, compression exerted between the support 2 'and the 'end 3' secured to the cap 12. This compression stresses the internal mechanism of the writing device mine and causes the exit of a portion of mine ( Figure 9).
  • the writing instrument consists as above ( Figure 10) of a body composed of two tubes placed end to end, substantially the same diameter and the same length, the lower or anterior called sheath 11 and have on the side writing a stop 111 on which the shoulder of the writing member can rest, and the other upper 12, called a cap, comprising teeth 126 and 127 (FIG. 11), of different lengths in the posterior part of its internal face. It further comprises a central tubular driver 23 slidably mounted in the body and having at one end a thread 231 in which the user can screw the connecting element 3 or 3 'in which the writing member is fitted.
  • An operating device 6, operating by latching and known per se (Figure 11), is located at the rear end of the instrument.
  • This device drives the translation of the coach.
  • a stop insert 16 is force fitted into the tube 11.
  • An elastic return member 17 is compressed between the insert 16 and the tubular driver 23.
  • a clip 20 and its fixing device 21 are mounted as before on the cap.
  • the latching device ( Figure 11) operates in a conventional manner by the translational operation of an end pusher 14 and makes it possible to obtain two equilibrium positions of a grooved movable internal tube 15 in contact with the driver.
  • the operation of the instrument is as follows. The user removes the cap 12 from the sheath 11 (by unscrewing), screws the writing member chosen in the tubular driver 23 via the connecting element 3 or 3 ', then puts the cap 12 back on. with the writing member on the sheath 11.
  • the connecting element 3 ′ of the lead member (FIG. 14) has a length such that, in the first equilibrium position, the shoulder 2 ′ of the writing member is almost in support on the stop 111 of the sheath 11 ( Figure 15).
  • a pressure exerted on the pusher 14 causes the grooved tube 15 and therefore that of the tubular driver 13 to advance. This determines whether the shoulder 2 'is pressed against the stop 111, then the output of a portion of mine ( Figure 16). After releasing the pressure on the pusher, the instrument is in the writing position and able to receive new stresses for mine exits.
  • the writing instrument consists ( Figure 17a, 17b, 17c) of a body composed as before of two tubes placed end to end, substantially the same length and the same diameter, one called sheath 11 and having side writing a stop 111 on which will rest the shoulder 2 'of the writing device to mine in particular, the other 12 called cap. It comprises a central tubular drive 23 ′ into which the user inserts the writing member, immobilization being effected by means of a split elastic ring 33 present on the connecting element 3 or 3 ′ (it - even fitted on the ball refill or the mine mechanism), elastic ring blocking in an internal groove 231 'of the tubular drive. Said tubular driver has at its anterior end two shoulders 234 'and 232'.
  • This tube has a finger 241 on its external lateral surface and a longitudinal notch 242 at its anterior end.
  • a control tube 25 surrounding the driver at its rear part has teeth 251 towards its rear end allowing it to be free in translation relative to the cap 12 but linked in rotation relative to the latter, said teeth 251 being introduced in the longitudinal grooves 121 of the cap.
  • An insert 26 is force fitted into the sheath 11. This insert is provided on its inner surface with longitudinal grooves 261 in which the notching teeth 242 of the tube 24 slide, thus preventing any rotation of said tube.
  • a tubular end piece 27 is mounted adjacent to the insert.
  • This end piece is preferably made of a plastic material overmolded on the front end of the tube 25.
  • This tubular end piece has on its lateral surface a slot 271 forming a hole in the helical cam path into which the finger 241 is inserted. The end piece is resting against the insert 26.
  • An elastic member 18 is compressed between the shoulder 234 'of the tubular driver and the tube 24, leaving a clearance "e" between the tube 24 and the shoulder 232' in the rest position of the tubular driver 23 '.
  • Various fixing members are provided, such as an annular screw 19 making it possible to immobilize in translation the control tube 25 by means of the tubular end piece 27, an elastic element 120 with a blade fixed in the cap 12 and frictionally retaining said cap on the control tube 25, a clip 20 and a fixing screw 22.
  • the operation of the writing instrument is as follows.
  • the user dislocates by translation the cap 12 of the control tube 25, and inserts the writing device chosen in the tubular driver.
  • the immobilization in translation of the connecting element 3 or 3 'relative to this tubular drive is achieved by means of the split ring 33 housed in a groove 31 of the connecting element, split ring which tightens during the 'introduction into the trainer relaxes when it faces the groove 231' of said trainer, and thus secures the writing member to the trainer.
  • the user puts the cap back on the control tube 25.
  • this type of embodiment also has two other advantages.
  • the first is linked to the addition of an elastic compensating member 18 and the space "e", an addition which gives writing comfort on the one hand since if the user changes his writing pressure, or else written on a hard surface, the elastic organ is able to absorb these pressure variations.
  • the elastic organ is able to absorb these pressure variations.
  • it allows to absorb dimensional variations in the length of the mine mechanism while avoiding premature compression of said mechanism.
  • it avoids wear of the members in the case of the use of a ball-point writing member having a shoulder 2.
  • the writing instrument consists ( Figures 23a, 23b, and 23c) of a body composed of two tubes placed end to end, as before, substantially of the same diameter, one called sheath 11 and the other cap. 12.
  • the sheath is on the side of the writing member and preferably has a conical shape at its anterior end, provided with an internal stop 111.
  • This assembly forming a body, houses a central tubular driver 23 '' in which the user inserts the writing device, either ball or lead. It immobilizes the latter in the driver, for example by means of a thread formed at the rear end and receiving a screw or a complementary thread secured to the connecting element 3, itself fitted by elastic deformation on the body of the ball refill or the mine mechanism.
  • a cylindrical bell-shaped cam 35 preferably made of plastic overmolded on the tubular driver, is also housed. This has a lug 351 laterally.
  • the development of this cam (FIG. 24) comprises three equilibrium zones A ', C' and E ', two ascending slopes B' and D 'of the same inclination and a descending slope F' , preferably vertical.
  • a guide tube 37 surrounds the assembly on the anterior portion. This tube laterally has a slot 371 over a part of its length, said slot receiving a lug 351.
  • a control tube 38 surrounds the assembly on the rear portion.
  • This tube has at its anterior end a bell-shaped cam 39, perfectly complementary to the cam 35 and preferably made of a plastic material overmolded on said driving tube (FIG. 25).
  • This tube 38 presents locally at its surface of the teeth 381 which, being introduced into the longitudinal internal grooves 121 of the cap 12, allow it to be free in translation relative to said cap, but linked in rotation relative to the latter.
  • a return spring 30 is mounted between the front end of the driver and the cam 35. It tends to keep the central tubular driver in the retracted position by means of the cam 35.
  • An insert 31 is force-fitted into the sheath 11. This insert has at its rear end a lug 311 which is introduced into the slot 371 of the guide tube 37 and immobilizes it in rotation.
  • Various fixing members are also contained, such as a screw 32 making it possible to secure in translation the control tube 38 and cam 39 assembly by means of a tightening joint 43, an elastic element 120 ′ fixed in the cap. 12 by the screw 22 tightened at its end and frictionally retaining the cap 12 on the control tube 38, and a clip 20 fixed to the cap 12 by said screw 22.
  • the relative rotation of the cap 12 relative to the sheath 11 causes in its movement the control tube 38 which transmits this movement to the cam 39.
  • the rotation of this cam 39 causes the translation of the cam 35 which is immobilized in rotation by the 'intermediate of the lug 351 sliding in the slot 371 of the tube 37.
  • This translation causes the translation of the tubular driver 23''which determines the advance and the output of the end of the writing member (figure 27a), the possible shoulder 2 of which will be positioned almost in abutment on the stop 111.
  • the friction is carried out simultaneously on the corresponding parallel surfaces B and B 'and D and D ', thus greatly reduce the wear of the parts.
  • cams 35 and 39 a press according to which they have three equilibrium zones A, C and E, (A ′, C ′ and E ′), the first two allowing the user to easily find the two usual configurations for positioning the writing organs.
  • the third equilibrium zone E is of great interest to the user. Indeed, in conventional writing instruments equipped with a clamp mechanism of this type, when broken pieces of mine or of too large diameter have blocked the organs of the mechanism, the user must perform a tedious operation, which consists in maintain with one hand the mechanism in the compressed position, and with the other hand, to introduce through the anterior end of the instrument the rod usually supplied and which makes it possible to repel the pieces of lead.
  • the particular shape of the cam press in FIG. 32 as described above will preferably be used in small diameter instruments because it allows, despite a small circumference, to obtain slopes allowing a gentle maneuver for the user and without risk of wear. for moving parts.
  • the shape of the cam in FIG. 33 can be used in instruments of larger diameter allowing a larger cam development, and thus allowing control of the mechanism by rotation in one direction or the other.
  • the operating member may also include a selective control element as a function of the writing member used, for example a turning wheel depending on whether a mine or ball refill is used, authorizing compensation for the length of mine refills or ball.
  • This element can also act on the drive compensation spring of the trainer by taring it differently depending on whether it is a mine refill (harder) or a ball refill.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Pens And Brushes (AREA)
  • Coating Apparatus (AREA)

Abstract

The invention relates to a writing instrument with a mechanical pencil or ball-point pen member. This instrument is characterized in that it comprises a driving element (12) accommodated or formed in its interior and capable, according to the user's choice, of receiving a writing member of the ball-point pen type (1) or of the mechanical pencil type (1'), consisting in the conventional way of a ball-point pen refill or a pencil mechanism ensuring a specific advance of the pencil when it is subjected to a compressive force on a suitable abutment (111) at its front end, and a control member capable of moving the said driving element in translation as a result of the operation of this member by the user, into a first position, in which the writing member is extended from the instrument for use, and a second inoperative position, into which it is retracted inside. <IMAGE>

Description

L'invention concerne un instrument à écrire permettant d'écrire indifféremment avec un organe d'écriture de type bille ou de type mine.The invention relates to a writing instrument making it possible to write indifferently with a writing device of ball type or of mine type.

On connaît par FR-A-1 004 813 un instrument à écrire conforme à la partie préambule de la revendication 1. Néanmoins, dans cet instrument, l'organe d'écriture est monté directement sur l'élément entraîneur de sorte qu'il ne reçoit qu'un organe d'écriture déterminé mine ou bille. Par ailleurs, il ne permet pas une avancée déterminée de mine pour un organe d'écriture à mine muni d'un mécanisme de pince ou mécanisme de mine.FR-A-1 004 813 discloses a writing instrument conforming to the preamble part of claim 1. However, in this instrument, the writing member is mounted directly on the driving element so that it does not receives only a specific writing element mine or ball. Furthermore, it does not allow a determined advance of mine for a writing device with a mine provided with a clamp mechanism or mine mechanism.

Il existe des dispositifs qui autorisent la possibilité d'écriture, soit par mine soit par bille avec le même instrument.There are devices which allow the possibility of writing, either by mine or by ball with the same instrument.

Ainsi, on connaît déjà un instrument à écrire possédant les deux fonctions bille et mine, l'utilisateur choisissant celle qu'il souhaite par des manoeuvres d'un organe de commande, qui sont généralement de rotation. Cet instrument, même s'il présente l'avantage d'offrir en permanence le choix des deux types d'écriture, mine ou bille, présente un double inconvénient, de caractère esthétique d'une part et de capacité d'écriture d'autre part. En effet, cet instrument doit contenir les deux types d'organes d'écriture indépendants mine et bille. Il requiert donc une dimension relativement importante en diamètre, et de réduire de façon générale la taille des recharges billes.Thus, there is already known a writing instrument having the two ball and mine functions, the user choosing the one he wishes by maneuvers of a control member, which are generally rotatable. This instrument, even if it has the advantage of permanently offering the choice of the two types of writing, mine or ball, presents a double disadvantage, of esthetic character on the one hand and of writing capacity on the other hand go. Indeed, this instrument must contain the two types of independent writing instruments, mine and ball. It therefore requires a relatively large dimension in diameter, and to generally reduce the size of the ball refills.

En outre, comme décrit par GB-A-2 185 713, dans ce type d'instrument les organes d'écriture étant disposés latéralement et leur fixation aux embouts entraîneurs étant nécessairement relativement souple pour autoriser une légère déviation angulaire de l'organe d'écriture au cours de sa translation, on ne peut éviter sur ce type d'instrument des coincements intempestifs de l'organe de commande du fait de la sujétion en coincement des embouts entraîneurs des organes d'écriture.In addition, as described by GB-A-2 185 713, in this type of instrument the writing members being arranged laterally and their attachment to the driving ends being necessarily relatively flexible to allow a slight angular deviation of the member writing during its translation, it is not possible to avoid inadvertent jamming of the control member on this type of instrument due to the jamming of the driving ends of the writing members.

On connaît également un instrument à écrire dans lequel le fabricant (ou l'utilisateur) peut introduire deux modèles de mécanisme, l'un permettant de commander les déplacements d'une recharge à bille, et l'autre permettant de commander le mécanisme de l'organe à mine afin d'assurer les fonctions d'alimentation en mine. Selon le choix du type d'écriture conféré préalablement à l'instrument par le fabricant ou par l'utilisateur, les inconvénients sont différents. Si c'est le fabricant qui détermine le type d'écriture, il doit disposer d'un stock suffisant d'instruments équipés avec les deux types de mécanisme, afin de pouvoir livrer rapidement les différents modèles. En outre, lorsque ces produits font l'objet de décorations différentes, ceci conduit à un stock important de produits finis, avec les conséquences financières correspondantes. Si c'est l'utilisateur qui pratique lui-même le changement de mécanisme, il doit disposer de deux mécanismes complets, d'où un supplément de coût, et afin que l'opération soit aisément réalisable, le fabricant doit réaliser un produit particulièrement fiable dont le démontage et le montage puissent être effectués facilement et de nombreuses fois, ceci sans outil particulier, ce qui entraîne des coûts de fabrication élevés.There is also known a writing instrument in which the manufacturer (or the user) can introduce two models of mechanism, one for controlling displacements of a ball refill, and the other allowing to control the mechanism of the mine organ in order to ensure the mine supply functions. According to the choice of the type of writing given beforehand to the instrument by the manufacturer or by the user, the disadvantages are different. If the manufacturer determines the type of writing, he must have a sufficient stock of instruments equipped with both types of mechanism, in order to be able to deliver the different models quickly. In addition, when these products are the subject of different decorations, this leads to a large stock of finished products, with the corresponding financial consequences. If it is the user who practices the change of mechanism himself, he must have two complete mechanisms, resulting in an additional cost, and in order for the operation to be easily achievable, the manufacturer must produce a particular product. reliable whose disassembly and assembly can be carried out easily and many times, this without any particular tool, which leads to high manufacturing costs.

L'invention a pour but de remédier à ces inconvénients grâce à l'enseignement de la revendication 1.The object of the invention is to remedy these drawbacks by means of the teaching of claim 1.

Cette conception originale de l'instrument qui permet d'obtenir les deux types d'écriture, le choix étant fait par l'utilisateur qui n'aura pour toute intervention qu'à remplacer l'organe d'écriture en place par un autre, de la même façon qu'il remplace une recharge vide, donne à l'instrument à écrire une plus grande latitude de formes et de dimensions relativement aux instruments existants de ce type, en particulier, quant à la finesse de la forme et au poids, réduit au minimum nécessaire.This original design of the instrument which makes it possible to obtain the two types of writing, the choice being made by the user who will only have for any intervention to replace the writing member in place with another, in the same way that it replaces an empty refill, gives the instrument to write a greater latitude of shapes and dimensions relative to existing instruments of this type, in particular, as to the fineness of the shape and the weight, reduced to the minimum necessary.

L'élément entraîneur est tubulaire, étant constitué par un simple tube monté coulissant à l'intérieur du corps de l'instrument, et mû par l'intermédiaire de l'organe de commande. L'action de l'organe de commande sur cet élément entraîneur peut être issue d'une manoeuvre de translation directe de l'organe par l'opérateur, par exemple à l'aide d'un doigt sur un embout de manoeuvre, et verrouillage de position de l'organe sur un élément d'accrochage à crans ou être indirecte par rotation de cet organe, conduisant par un jeu de cames approprié à l'action de translation sur l'élément entraîneur en vue de sortir ou non l'organe d'écriture proprement dit (sa pointe d'écriture).The driving element is tubular, being constituted by a simple tube mounted sliding inside the body of the instrument, and moved by means of the control member. The action of the control member on this driving element can result from an operation of direct translation of the member by the operator, for example using a finger on an operating end piece, and locking of position of the member on a notched hooking element or be indirect by rotation of this member, leading by a set of cams suitable for the translational action on the driving element with a view to removing or not the member writing itself (its writing tip).

L'élément entraîneur peut encore être constitué par une partie du corps de l'instrument lui-même.The driving element may also be constituted by a part of the body of the instrument itself.

Selon cette conception de l'instrument selon l'invention on obtient un guidage optimal de l'organe d'écriture sélectionné.According to this design of the instrument according to the invention, optimal guidance of the selected writing member is obtained.

D'autres aspects et caractéristiques de l'invention seront apparents au regard de la description ci-après d'exemples de réalisation présentés à titre non limitatif et en référence aux dessins annexés, sur lesquels :

  • la figure 1 est une vue en élévation d'un organe d'écriture à bille utilisé pour l'instrument à écrire de l'invention;
  • la figure 2 est une vue en élévation d'un organe d'écriture à mine utilisé pour l'instrument à écrire selon l'invention;
  • la figure 3 est une vue en coupe agrandie de la partie d'extrémité côté pointe d'écriture de l'organe d'écriture de la figure 2;
  • la figure 4a est une vue en coupe de l'instrument sans organe d'écriture et la figure 4b est une vue en coupe agrandie de l'instrument selon la ligne A-A de la figure précédente;
  • la figure 5 est une vue en coupe de l'instrument avec un organe d'écriture à bille en position rentrée;
  • la figure 6 est une vue en coupe de l'instrument avec un organe d'écriture à bille en position sortie;
  • la figure 7 est une vue en coupe de l'instrument avec un organe d'écriture à mine en position rentrée;
  • la figure 8 est une vue en coupe de l'instrument avec un organe d'écriture à mine en position sortie d'écriture;
  • la figure 9 est une vue en coupe de l'instrument avec un organe d'écriture à mine en position sortie de compression pour l'alimentation en mine;
  • la figure 10 est une vue en coupe d'un autre mode de réalisation de l'instrument sans organe d'écriture;
  • la figure 11 montre selon une vue éclatée l'organe de manoeuvre de l'entraîneur interne;
  • les figures 12a et 12b montrent respectivement l'instrument avec une recharge bille en position rentrée et le développé correspondant de l'organe de manoeuvre;
  • les figures 13a et 13b montrent respectivement l'instrument avec une recharge bille en position sortie d'écriture et le développé correspondant de l'organe de manoeuvre;
  • la figure 14 montre l'organe à mine correspondant;
  • la figure 15 montre l'instrument avec son organe à mine dans une première position (position d'écriture);
  • la figure 16 montre l'instrument avec son organe à mine en compression pour sortir une portion de mine;
  • la figure 17a montre un troisième mode de réalisation de l'instrument à écrire sans organe d'écriture;
  • la figure 17b montre l'ensemble d'entraînement correspondant de l'organe d'écriture;
  • la figure 17c montre le système d'attache de l'élément de liaison de l'organe d'écriture à l'entraîneur;
  • la figure 18 montre l'instrument avec un organe à bille en position rentrée;
  • la figure 19 montre l'instrument avec un organe à bille en position sortie d'écriture;
  • la figure 20 montre l'instrument à mine en position rentrée;
  • la figure 21 montre l'instrument avec un organe à mine en position sortie d'écriture;
  • la figure 22 montre l'instrument avec un organe à mine en position sortie d'alimentation;
  • le figure 23a montre un quatrième mode de réalisation de l'instrument à écrire sans organe d'écriture;
  • les figures 23b et 23c montrent l'ensemble d'entraînement de l'entraîneur;
  • les figures 24 et 25 montrent les cames d'entraînement, respectivement dans deux positions d'équilibre différents;
  • les figures 26a et 26b montrent respectivement l'instrument avec un organe à bille en position rentrée et la position de cames correspondante;
  • les figures 27a et 27b montrent respectivement l'instrument avec un organe à bille en position sortie et le position de cames correspondante;
  • les figures 28a et 28b montrent respectivement l'instrument avec un organe à mine en position rentrée et la position de cames correspondante;
  • les figures 29a et 29b montrent respectivement l'instrument avec un organe à mine en position sortie et le position de cames correspondante;
  • les figures 30a et 30b montrent respectivement l'instrument avec un organe à mine en position sortie intermédiaire d'alimentation et la position de cames correspondante;
  • les figures 31a et 31b montrent respectivement l'instrument avec un organe à mine en position sortie maintenue de conpression et la position de cames correspondante; et
  • les figures 32 et 33 montrent les développés de cames utilisables.
Other aspects and characteristics of the invention will be apparent from the following description of embodiments presented without limitation and with reference to the appended drawings, in which:
  • Figure 1 is an elevational view of a ball writing member used for the writing instrument of the invention;
  • Figure 2 is an elevational view of a lead writing device used for the writing instrument according to the invention;
  • Figure 3 is an enlarged sectional view of the writing tip end portion of the writing member of Figure 2;
  • Figure 4a is a sectional view of the instrument without writing device and FIG. 4b is an enlarged sectional view of the instrument along the line AA in the preceding figure;
  • Figure 5 is a sectional view of the instrument with a ballpoint writing member in the retracted position;
  • Figure 6 is a sectional view of the instrument with a ballpoint writing member in the extended position;
  • Figure 7 is a sectional view of the instrument with a lead writing member in the retracted position;
  • Figure 8 is a sectional view of the instrument with a lead writing device in the writing output position;
  • Figure 9 is a sectional view of the instrument with a writing device in the compression output position for mine feed;
  • Figure 10 is a sectional view of another embodiment of the instrument without writing member;
  • Figure 11 shows in an exploded view the operating member of the internal trainer;
  • Figures 12a and 12b respectively show the instrument with a ball refill in the retracted position and the corresponding press of the operating member;
  • FIGS. 13a and 13b respectively show the instrument with a ballpoint refill in the writing output position and the corresponding press of the operating member;
  • Figure 14 shows the corresponding lead member;
  • FIG. 15 shows the instrument with its lead member in a first position (writing position);
  • FIG. 16 shows the instrument with its mine body in compression for removing a portion of mine;
  • FIG. 17a shows a third embodiment of the writing instrument without a writing member;
  • Figure 17b shows the corresponding drive assembly of the writing member;
  • FIG. 17c shows the system for attaching the connecting element of the writing member to the trainer;
  • Figure 18 shows the instrument with a ball member in the retracted position;
  • FIG. 19 shows the instrument with a ball member in the write-out position;
  • FIG. 20 shows the lead instrument in the retracted position;
  • FIG. 21 shows the instrument with a lead member in the writing output position;
  • FIG. 22 shows the instrument with a lead member in the feed outlet position;
  • Figure 23a shows a fourth mode of realization of the writing instrument without writing device;
  • Figures 23b and 23c show the drive assembly of the trainer;
  • Figures 24 and 25 show the drive cams, respectively in two different equilibrium positions;
  • Figures 26a and 26b respectively show the instrument with a ball member in the retracted position and the corresponding cam position;
  • Figures 27a and 27b respectively show the instrument with a ball member in the extended position and the corresponding cam position;
  • Figures 28a and 28b respectively show the instrument with a lead member in the retracted position and the corresponding cam position;
  • Figures 29a and 29b respectively show the instrument with a lead member in the extended position and the corresponding cam position;
  • FIGS. 30a and 30b respectively show the instrument with a lead member in the intermediate feed output position and the corresponding cam position;
  • FIGS. 31a and 31b respectively show the instrument with a lead member in the extended press-out position and the corresponding cam position; and
  • Figures 32 and 33 show the developed cams usable.

Dans la suite du texte, on appellera organe d'écriture à bidle 1 le sous-ensemble (figure 1) constitué d'un tube rempli d'encre et muni à une extrémité d'une bille sertie permettent le transfert de l'encre du tube eu support sur lequel l'utilisateur écrit, ledit tube comportant éventuellement un épaulement 2 du côté écriture. On appellera organe d'écriture à mine 1' un sous-ensemble (figure 2) comportant un réservoir de mines et un mécanisme à pince qui, sollicité en compression, est susceptible de faire sortir des portions de mine d'une longueur déterminée. Ledit mécanisme est d'un modèle couramment disponible auprès des fabricants, son fonctionnement étant basé sur le fait que lors d'une compression de celui-ci, une pince 4 (figure 3) se déplace, entraînant dans son mouvement une mine. A la fin de son mouvement de translation, la pince s'ouvre et libère la mine. Lorsque l'effort de conpression est relâché, la pince recule en se refermant et la mine est retenue dans son guide 5. Ce sous-ensemble comporte un épaulement 2' du côté de la pointe d'écriture. Chacun des organes d'écriture, bille ou mine, peut être muni à l'extrémité opposée à la pointe d'écriture d'un élément de liaison ou embout (respectivement 3, 3'), immobilisé au moins en translation par rapport à l'organe d'écriture.In the remainder of the text, a bidle writing member 1 will be referred to as the subassembly (FIG. 1) consisting of a tube filled with ink and provided at one end with a crimped ball, allowing the ink to be transferred from the tube had support on which the user writes, said tube possibly comprising a shoulder 2 on the writing side. A writing device 1 ′ will be called a sub-assembly (FIG. 2) comprising a mine reservoir and a clamp mechanism which, under compression, is likely to bring out portions of mine of a determined length. Said mechanism is of a model commonly available from manufacturers, its operation being based on the fact that during compression thereof, a clamp 4 (Figure 3) moves, causing in its movement a mine. At the end of its translational movement, the clamp opens and releases the mine. When the compressive force is released, the forceps back while closing and the lead is retained in its guide 5. This sub-assembly includes a shoulder 2 ′ on the side of the writing tip. Each of the writing members, ball or lead, can be provided at the end opposite the writing tip with a connecting element or end piece (respectively 3, 3 '), immobilized at least in translation relative to the writing organ.

Selon les organes d'écriture utilisés, l'élément de liaison peut jouer plusieurs rôles. Il peut en premier lieu avoir un rôle de compensateur par rapport aux possibles différences de longueur des organes d'écriture, mine et bille. En second lieu, il tient un rôle d'adaptateur afin de rendre les extrémités opposées à la pointe d'écriture identiques en formes et dimensions. Enfin, il peut apporter un avantage pratique de manipulation pour l'utilisateur lors d'un changement d'organe d'écriture en possédant par exemple un état de surface extérieure cranté.Depending on the writing devices used, the connecting element can play several roles. It can first of all have a compensating role in relation to the possible differences in length of the writing organs, lead and ball. Secondly, it acts as an adapter in order to make the ends opposite the writing tip identical in shape and size. Finally, it can provide a practical handling advantage for the user when changing a writing device, for example by having a notched external surface state.

Les organes d'écriture sont classiques, comme mentionné précédemment, mais ils peuvent être intégrés à des instruments à écrire selon l'invention de configurations diverses.The writing members are conventional, as mentioned previously, but they can be integrated into writing instruments according to the invention of various configurations.

Un premier exemple de réalisation est maintenant décrit. L'instrument à écrire représenté est constitué (figure 4a) d'un tube inférieur appelé gaine 11 et d'un capuchon supérieur 12. Le tube 11 possède du côté écriture une butée 111 sur laquelle vient s'appuyer l'organe d'écriture. Le tube 11 possède un filetage mâle externe 112. Le capuchon 12 remplit la fonction d'entraîneur tubulaire de l'organe d'écriture, possédant dans la partie intérieure un logement 122 apte à recevoir l'extrémité 3 ou 3' de cet organe d'écriture et à retenir celui-ci grâce à une déformation élastique (par emmanchement). Ce capuchon 12, se présentant sous la forme d'un tube, possède un filetage femelle interne 123 capable de recevoir le filetage mâle 112 du tube 11, de manière à solidariser ces tubes, et deux rainures longitudinales 124 et 125 formées dans son épaisseur (figure 4b). Un organe élastique annulaire 13 est reçu dans une gorge 113 du tube 11. Cet organe plastique 13 présente une protubérance 131, et est immobilisé solidairement au tube 11 par l'intermédiaire de ses extrémités recourbées insérées dans une fente 114 du tube 11. Le capuchon 12 comporte une agrafe 20 et son dispositif de fixation 21.A first embodiment example is now described. The writing instrument shown is made up (FIG. 4a) of a lower tube called sheath 11 and of an upper cap 12. The tube 11 has on the writing side a stop 111 on which the writing member comes to bear. . The tube 11 has an external male thread 112. The cap 12 fulfills the function of tubular drive of the writing member, having in the part inside a housing 122 capable of receiving the end 3 or 3 ′ of this writing member and of retaining the latter thanks to an elastic deformation (by fitting). This cap 12, in the form of a tube, has an internal female thread 123 capable of receiving the male thread 112 of the tube 11, so as to secure these tubes, and two longitudinal grooves 124 and 125 formed in its thickness ( Figure 4b). An annular elastic member 13 is received in a groove 113 of the tube 11. This plastic member 13 has a protrusion 131, and is immobilized integrally with the tube 11 by means of its curved ends inserted in a slot 114 of the tube 11. The cap 12 comprises a clip 20 and its fixing device 21.

Le fonctionnement de l'instrument à écrire est le suivant. L'utilisateur désolidarise par dévissage le capuchon 12 du tube 11, insère l'organe d'écriture choisi, à mine ou à bille, dans le logement 122 du capuchon, puis le revisse sur le tube 11.The operation of the writing instrument is as follows. The user removes the cap 12 from the tube 11 by unscrewing it, inserts the chosen writing device, using a lead or ball, in the housing 122 of the cap, then screwing it back on the tube 11.

Le fonctionnement est d'abord décrit avec un organe d'écriture à bille. Initialement, lorsque l'organe d'écriture se trouve en position rentrée (figure 5), la protubérance 131 se trouve dans le logement 125. La manoeuvre en rotation relative du capuchon 12 par rapport au tube 11 provoque sa translation par l'intermédiaire des filetages 112 et 123 et entraîne dans cette translation l'organe d'écriture. Lorsque la protubérance 131 se trouve en face du logement 124 du capuchon (figure 4b), l'organe élastique 13 se détend provoquant un freinage du mouvement de rotation qui indique à l'utilisateur que la pointe de l'organe d'écriture est sortie (figure 6). Une tentative de rotation supplémentaire conduit l'éventuel épaulement 2 de l'organe d'écriture en appui sur la butée 111 interdisant ainsi toute avance supplémentaire. La rotation du capuchon 12 par rapport au tube 11 en sens inverse provoque la rétraction de l'organe d'écriture, et lorsque la protubérance 131 se trouve en face du logement 125 du capuchon, l'organe élastique 13 se détend en provoquant un freinage du mouvement de rotation qui indique à l'utilisateur que la pointe de l'organe d'écriture est rentrée à l'intérieur du stylo.The operation is first described with a ballpoint writing member. Initially, when the writing member is in the retracted position (FIG. 5), the protuberance 131 is located in the housing 125. The maneuver in relative rotation of the cap 12 relative to the tube 11 causes its translation through the threads 112 and 123 and drives the writing member in this translation. When the protrusion 131 is opposite the housing 124 of the cap (FIG. 4b), the elastic member 13 relaxes causing a braking of the rotational movement which indicates to the user that the tip of the writing member has come out (figure 6). An additional rotation attempt leads to the possible shoulder 2 of the writing member bearing on the stop 111 thus preventing any further advance. The rotation of the cap 12 relative to the tube 11 in the opposite direction causes the writing member to retract, and when the protuberance 131 is located opposite the housing 125 of the cap, the elastic member 13 expands, causing a braking of the rotational movement which indicates to the user that the tip of the writing member has returned inside the pen.

Le fonctionnement est maintenant décrit avec un organe d'écriture à mine. La figure 7 montre le positionnement relatif des divers organes dans la position rentrée. la rotation du capuchon provoque le même mouvement que précédemment, c'est-à-dire la sortie de l'extrémité de l'organe d'écriture à mine, positionnant son épaulement 2' sensiblement en appui sur la butée 111 de la gaine (figure 8). Si l'utilisateur prolonge cette rotation en faisant passer la protubérance 131 au delà du logement 124, il provoque ainsi une nouvelle avance du mécanisme mine qui assurera la compression de l'organe d'écriture, compression exercée entre l'appui 2' et l'extrémité 3' solidaire du capuchon 12. Cette compression sollicite le mécanisme interne de l'organe d'écriture mine et provoque la sortie d'une portion de mine (figure 9). La rotation relative du capuchon dans l'autre sens, libèrant le mécanisme de l'organe d'écriture mine de l'effort de compression, permet un retour à la position d'écriture (figure 8). La protubérance 131 est alors placé dans le logement 124, permettant naturellement une nouvelle manoeuvre pour une avancée de la mine à son épuisement. Enfin, une nouvelle rotation dans le même sens que précédemment entraîne la rentrée du mécanisme à l'intérieur de l'instrument (figure 7) de la même façon que dans le cas d'un organe d'écriture à bille, la protubérance 131 se plaçant dans la logement 125.The operation is now described with a lead writing device. FIG. 7 shows the relative positioning of the various members in the retracted position. the rotation of the cap causes the same movement as previously, that is to say the exit from the end of the lead writing device, positioning its shoulder 2 ′ substantially in abutment on the stop 111 of the sheath ( figure 8). If the user prolongs this rotation by passing the protuberance 131 beyond the housing 124, he thus causes a new advance of the mine mechanism which will ensure the compression of the writing member, compression exerted between the support 2 'and the 'end 3' secured to the cap 12. This compression stresses the internal mechanism of the writing device mine and causes the exit of a portion of mine (Figure 9). The relative rotation of the cap in the other direction, releasing the mechanism of the writing member which undermines the compression force, allows a return to the writing position (FIG. 8). The protuberance 131 is then placed in the housing 124, naturally allowing a new maneuver for advancing the mine when it is exhausted. Finally, a new rotation in the same direction as previously causes the mechanism to return to the interior of the instrument (FIG. 7) in the same way as in the case of a ball-point writing member, the protuberance 131 is placing in housing 125.

Un second exemple de réalisation est maintenant décrit. L'instrument à écrire est constitué comme précédemment (figure 10) d'un corps compose de deux tubes mis bout-à-bout, sensiblement de même diamètre et de même longueur, l'un inférieur ou antérieur appelé gaine 11 et possèdent du côté écriture une butée 111 sur laquelle pourra s'appuyer l'épaulement de l'organe d'écriture, et l'autre supérieur 12, appelé capuchon, comportant des dents 126 et 127 (figure 11), de longueurs différentes dans la partie postérieure de sa face interne. Il comprend en outre un entraîneur tubulaire central 23 monté coulissant dans le corps et possédant à une extrémité un filetage 231 dans lequel l'utilisateur pourra visser l'élément de liaison 3 ou 3' dans lequel est emmanché l'organe d'écriture. Un dispositif de manoeuvre 6, fonctionnant par encliquetage et connu en soi (figure 11), est situé à l'extrémité postérieure de l'instrument. Ce dispositif entraîne la translation de l'entraîneur. Un insert d'arrêt 16 est emmanché à force dans le tube 11. Un organe élastique de rappel 17 est comprimé entre l'insert 16 et l'entraîneur tubulaire 23. Une agrafe 20 et son dispositif de fixation 21 sont montés comme précédemment sur le capuchon. Le dispositif d'encliquetage (figure 11) fonctionne de façon classique par la manoeuvre en translation d'un poussoir d'extrémité 14 et permet d'obtenir deux positions d'équilibre d'un tube interne mobile rainuré 15 en contact avec l'entraîneur, ceci grâce à la présence de dents radiales 141 et 151 présentant un léger décalage angulaire et situées sur leurs faces en contact, de dents 142 sur une partie de la surface latérale extérieure du poussoir 14, dents s'engageant entre les dents 126 et 127 du capuchon 12 et de logements 152 et 153 à la surface extérieure du tube 15, logements dans lesquels s'introduisent les dents 126 et 127 du capuchon.A second embodiment example is now described. The writing instrument consists as above (Figure 10) of a body composed of two tubes placed end to end, substantially the same diameter and the same length, the lower or anterior called sheath 11 and have on the side writing a stop 111 on which the shoulder of the writing member can rest, and the other upper 12, called a cap, comprising teeth 126 and 127 (FIG. 11), of different lengths in the posterior part of its internal face. It further comprises a central tubular driver 23 slidably mounted in the body and having at one end a thread 231 in which the user can screw the connecting element 3 or 3 'in which the writing member is fitted. An operating device 6, operating by latching and known per se (Figure 11), is located at the rear end of the instrument. This device drives the translation of the coach. A stop insert 16 is force fitted into the tube 11. An elastic return member 17 is compressed between the insert 16 and the tubular driver 23. A clip 20 and its fixing device 21 are mounted as before on the cap. The latching device (Figure 11) operates in a conventional manner by the translational operation of an end pusher 14 and makes it possible to obtain two equilibrium positions of a grooved movable internal tube 15 in contact with the driver. , this thanks to the presence of radial teeth 141 and 151 having a slight angular offset and located on their contacting faces, of teeth 142 on a part of the external lateral surface of the pusher 14, teeth engaging between the teeth 126 and 127 of the cap 12 and of housings 152 and 153 on the outer surface of the tube 15, housings into which the teeth 126 and 127 of the cap are introduced.

Le fonctionnement de l'instrument est le suivant. L'utilisateur désolidarise le capuchon 12 de la gaine 11 (par dévissage), visse l'organe d'écriture choisi dans l'entraîneur tubulaire 23 par l'intermédiaire de l'élément de liaison 3 ou 3', puis remet le capuchon 12 avec l'organe d'écriture sur la gaine 11.The operation of the instrument is as follows. The user removes the cap 12 from the sheath 11 (by unscrewing), screws the writing member chosen in the tubular driver 23 via the connecting element 3 or 3 ', then puts the cap 12 back on. with the writing member on the sheath 11.

Le fonctionnement est d'abord décrit avec un organe d'écriture à bille. Dans la position d'équilibre initiale (figure 12a et 12b), les dents 126 et 127 du capuchon 12 sont engagées respectivement dans les logements 152 et 153 du capuchon. Une pression exercée sur le poussoir 14 provoque une translation vers l'avant de l'entraîneur tubulaire, ce qui provoque la sortie de la pointe d'écriture. En fin de mouvement de translation du poussoir, les dents 126 et 127 du capuchon échappent des rainures 152 et 153 du tube rainuré, permettant à celui-ci une légère rotation sous l'effet de la poussée des dents radiales du poussoir 14 et du tube 15. Au relâchement du poussoir, le tube 15 ne recule que très faiblement, les dents du capuchon s'engageant à nouveau dans las rainures mais avec un décalage par rapport à la position initiale, les dents les plus longues 126 étant introduites dans les rainures les plus courtes 153 et réciproquement (figure 13b). Une nouvelle pression sur le poussoir 14 provoque les mêmes mouvements. Par contre, lors du relâchement de la pression sur le poussoir, ce sont les dents 126 et 127 qui s'introduisent respectivement dans les logements 152 et 153 du tube 15, permettant à celui-ci de reculer sous la poussée du ressort 17 exercée par l'intermédiaire de l'entraîneur tubulaire 13. Le cycle précédent peut alors reprendre.The operation is first described with a ballpoint writing member. In the initial equilibrium position (FIGS. 12a and 12b), the teeth 126 and 127 of the cap 12 are engaged respectively in the housings 152 and 153 of the cap. A pressure exerted on the pusher 14 causes a forward translation of the driver tubular, which causes the writing tip to exit. At the end of the translational movement of the pusher, the teeth 126 and 127 of the cap escape from the grooves 152 and 153 of the grooved tube, allowing the latter to rotate slightly under the effect of the thrust of the radial teeth of the pusher 14 and of the tube 15. When the plunger is released, the tube 15 recedes only very slightly, the teeth of the cap engaging again in the grooves but with an offset from the initial position, the longest teeth 126 being introduced into the grooves the shorter 153 and vice versa (Figure 13b). A new pressure on the pusher 14 causes the same movements. On the other hand, when the pressure on the plunger is released, it is the teeth 126 and 127 which are introduced respectively into the housings 152 and 153 of the tube 15, allowing the latter to move back under the thrust of the spring 17 exerted by through the tubular driver 13. The previous cycle can then resume.

Le fonctionnement est maintenant décrit avec un organe d'écriture à mine. Dans ce cas, l'élément de liaison 3' de l'organe à mine (figure 14) a une longueur telle que, dans la première position d'équilibre, l'épaulement 2' de l'organe d'écriture est quasiment en appui sur la butée 111 de la gaine 11 (figure 15). Une pression exercée sur le poussoir 14 provoque l'avance du tube rainuré 15 et donc celle de l'entraîneur tubulaire 13. Ceci détermine une mise en appui de l'épaulement 2' sur la butée 111, puis la sortie d'une portion de mine (figure 16). Après relâchement de la pression sur le poussoir, l'instrument est en position d'écriture et apte à recevoir de nouvelles sollicitations pour des sorties de mines.The operation is now described with a lead writing device. In this case, the connecting element 3 ′ of the lead member (FIG. 14) has a length such that, in the first equilibrium position, the shoulder 2 ′ of the writing member is almost in support on the stop 111 of the sheath 11 (Figure 15). A pressure exerted on the pusher 14 causes the grooved tube 15 and therefore that of the tubular driver 13 to advance. This determines whether the shoulder 2 'is pressed against the stop 111, then the output of a portion of mine (Figure 16). After releasing the pressure on the pusher, the instrument is in the writing position and able to receive new stresses for mine exits.

Un troisième mode de réalisation est à présent décrit. L'instrument à écrire est constitué (figure 17a, 17b, 17c) d'un corps composé comme précédemment de deux tubes mis bout-à-bout, sensiblement de même longueur et de même diamètre, l'un appelé gaine 11 et possédant du côté écriture une butée 111 sur laquelle viendra s'appuyer l'épaulement 2' de l'organe d'écriture à mine en particulier, l'autre 12 appelé capuchon . Il comporte un entraîneur tubulaire central 23' dans lequel l'utilisateur insère l'organe d'écriture, l'immobilisation se faisant par l'intermédiaire d'un anneau élastique fendu 33 présent sur l'élément de liaison 3 ou 3' (lui-même emmanché sur la recharge bille ou le mécanisme mine), anneau élastique se bloquant dans une gorge interne 231' de l'entraîneur tubulaire. Ledit entraîneur tubulaire possède à son extrémité antérieure deux épaulements 234' et 232'. Un tube 24, constitué de préférence en une matière plastique, entoure l'entraîneur. Ce tube possède un doigt 241 sur sa surface latérale externe et un crantage longitudinal 242 à son extrémité antérieure. Un tube de commande 25 entourant l'entraîneur à sa partie postérieure présente vers son extrémité postérieure des dents 251 lui permettant d'être libre en translation par rapport au capuchon 12 mais lié en rotation par rapport à ce dernier, lesdites dents 251 s'introduisant dans les rainures longitudinales 121 du capuchon. Un insert 26 est emmanché à force dans la gaine 11. Cet insert est pourvu à sa surface intérieure de rainures longitudinales 261 dans lesquelles viennent coulisser les dents de crantage 242 du tube 24, interdisant ainsi toute rotation dudit tube.A third embodiment is now described. The writing instrument consists (Figure 17a, 17b, 17c) of a body composed as before of two tubes placed end to end, substantially the same length and the same diameter, one called sheath 11 and having side writing a stop 111 on which will rest the shoulder 2 'of the writing device to mine in particular, the other 12 called cap. It comprises a central tubular drive 23 ′ into which the user inserts the writing member, immobilization being effected by means of a split elastic ring 33 present on the connecting element 3 or 3 ′ (it - even fitted on the ball refill or the mine mechanism), elastic ring blocking in an internal groove 231 'of the tubular drive. Said tubular driver has at its anterior end two shoulders 234 'and 232'. A tube 24, preferably made of a plastic material, surrounds the driver. This tube has a finger 241 on its external lateral surface and a longitudinal notch 242 at its anterior end. A control tube 25 surrounding the driver at its rear part has teeth 251 towards its rear end allowing it to be free in translation relative to the cap 12 but linked in rotation relative to the latter, said teeth 251 being introduced in the longitudinal grooves 121 of the cap. An insert 26 is force fitted into the sheath 11. This insert is provided on its inner surface with longitudinal grooves 261 in which the notching teeth 242 of the tube 24 slide, thus preventing any rotation of said tube.

Un embout tubulaire 27 est monté adjacent à l'insert. Cet embout est constitué de préférence en une matière plastique surmoulée sur l'extrémité antérieure du tube 25. Cet embout tubulaire comporte sur sa surface latérale une fente 271 faisant orifice de chemin de came hélicoïdale dans laquelle est introduit le doigt 241. L'embout est en appui contre l'insert 26. Un organe élastique 18 est comprimé entre l'épaulement 234' de l'entraîneur tubulaire et le tube 24, ménageant en position de repos un jeu "e" entre le tube 24 et l'épaulement 232' de l'entraîneur tubulaire 23'.A tubular end piece 27 is mounted adjacent to the insert. This end piece is preferably made of a plastic material overmolded on the front end of the tube 25. This tubular end piece has on its lateral surface a slot 271 forming a hole in the helical cam path into which the finger 241 is inserted. The end piece is resting against the insert 26. An elastic member 18 is compressed between the shoulder 234 'of the tubular driver and the tube 24, leaving a clearance "e" between the tube 24 and the shoulder 232' in the rest position of the tubular driver 23 '.

Divers organes de fixation sont prévus, tels qu'une vis annulaire 19 permettant d'immobiliser en translation le tube de commande 25 par l'intermédiaire de l'embout tubulaire 27, un élément élastique 120 à lame fixé dans le capuchon 12 et retenant par friction ledit capuchon sur le tube de commande 25, une agrafe 20 et une vis de fixation 22.Various fixing members are provided, such as an annular screw 19 making it possible to immobilize in translation the control tube 25 by means of the tubular end piece 27, an elastic element 120 with a blade fixed in the cap 12 and frictionally retaining said cap on the control tube 25, a clip 20 and a fixing screw 22.

Le fonctionnement de l'instrument à écrire est le suivant. L'utilisateur déboîte par translation le capuchon 12 du tube de commande 25, et insère l'organe d'écriture choisi dans l'entraîneur tubulaire. L'immobilisation en translation de l'élément de liaison 3 ou 3' par rapport à cet entraîneur tubulaire est réalisée grâce à l'anneau fendu 33 logé dans une gorge 31 de l'élément de liaison, anneau fendu qui se resserant lors de l'introduction dans l'entraîneur se détend lorsqu'il est face à la gorge 231' dudit entraîneur, et solidarise ainsi l'organe d'écriture à l'entraîneur. Puis l'utilisateur remet le capuchon en place sur le tube de conmande 25.The operation of the writing instrument is as follows. The user dislocates by translation the cap 12 of the control tube 25, and inserts the writing device chosen in the tubular driver. The immobilization in translation of the connecting element 3 or 3 'relative to this tubular drive is achieved by means of the split ring 33 housed in a groove 31 of the connecting element, split ring which tightens during the 'introduction into the trainer relaxes when it faces the groove 231' of said trainer, and thus secures the writing member to the trainer. Then the user puts the cap back on the control tube 25.

Le fonctionnement est d'abord décrit avec un organe d'écriture à bille (figure 18). La manoeuvre en rotation du capuchon 12 par rapport à la gaine 11 entraîne avec le même mouvement de rotation le tube de commande 25 et la rampe hélicoïdale 271 de l'embout 27, provoquant ainsi la translation du doigt 241 qui entraîne dans son mouvement l'entraîneur tubulaire par l'intermédiaire du ressort 18, et donc la translation de l'organe d'écriture 1. Lorsque le doigt 241 est dans la position médiane C de la came, la pointe est alors sortie du stylo permettant ainsi l'écriture (figure 19). Si l'utilisateur prolonge cette rotation, le doigt 241 continue sur la rampe D, provoquant une nouvelle avancée de l'entraîneur tubulaire, ce qui conduit à la mise en appui de l'organe d'écriture sur la butée 111, entraînant ainsi la compression de l'organe élastique 18 qui absorbe l'effort et prévient de cette position. On évite ainsi la détérioration du doigt 241 et de la fente hélicoïdale 271. Une rotation dans le sens opposé à la précédente permet de revenir successivement à la position d'écriture et à la rentrée de l'organe d'écriture à l'intérieur de l'instrument.The operation is first described with a ballpoint writing device (Figure 18). The maneuver in rotation of the cap 12 relative to the sheath 11 causes with the same rotational movement the control tube 25 and the helical ramp 271 of the end piece 27, thus causing the translation of the finger 241 which causes in its movement the tubular drive via the spring 18, and therefore the translation of the writing member 1. When the finger 241 is in the middle position C of the cam, the tip is then taken out of the pen thus allowing writing ( figure 19). If the user prolongs this rotation, the finger 241 continues on the ramp D, causing a new advance of the tubular driver, which leads to the bearing of the writing member on the stop 111, thus causing the compression of the elastic member 18 which absorbs the force and prevents this position. This avoids the deterioration of the finger 241 and the helical slot 271. A rotation in the opposite direction to the previous one makes it possible to return successively to the writing position and to the re-entry of the writing member inside the instrument.

Le fonctionnement est à présent décrit avec un organe d'écriture à mine (figure 20). Dans ce cas, la même rotation provoque le même mouvement, c'est-à-dire la sortie de l'extrémité de l'organe d'écriture positionnant son épaulement 2' quasiment en appui sur la butée 111 de la gaine (figure 21). La rampe C est sollicitée. Si l'utilisateur prolonge cette rotation, le doigt 241 s'engage sur la rampe D, provoquant une nouvelle avance de l'entraîneur tubulaire. Sous l'effet de la réaction du ras sort interne au mécanisme à mine, la compression de l'élément élastique 18 conduit à la mise en contact du tube 24 sur l'épaulement 232' de l'entraîneur, ce qui assure la mise en butée de l'épaulement 2' sur la butée 111 et a pour conséquence une conpression du mécanisme de l'organe d'écriture à mine, compression exercée entre l'appui 2' et son extrémité solidaire de l'entraîneur tubulaire par l'intermédiaire de l'élément 3'. Cette compression, sollicitant le mécanisme interne, détermine ainsi la sortie d'une portion de mine (figure 22). La rotation relative du capuchon dans l'autre sens libère le mécanisme de l'organe d'écriture mine de l'effort de compression. Le doigt 241 se replace dans la zone C de la came, permettant ainsi une nouvelle manoeuvre pour une nouvelle avancée de mine. Enfin, une nouvelle rotation dans le même sens que la précédente entraîne la rentrée de l'organe d'écriture à l'intérieur de l'instrument.The operation is now described with a writing device with lead (FIG. 20). In this case, the same rotation causes the same movement, that is to say the output from the end of the writing member positioning its shoulder 2 'almost in abutment on the stop 111 of the sheath (FIG. 21 ). Ramp C is stressed. If the user prolongs this rotation, the finger 241 engages on the ramp D, causing a further advance of the tubular driver. Under the effect of the reaction of the internal fate of the mine mechanism, the compression of the elastic element 18 leads to the contacting of the tube 24 on the shoulder 232 ′ of the driver, which ensures the setting in abutment of the shoulder 2 'on the abutment 111 and results in a compression of the mechanism of the lead writing device, compression exerted between the support 2' and its end secured to the tubular drive by means of of element 3 '. This compression, stressing the internal mechanism, thus determines the exit of a portion of mine (Figure 22). The relative rotation of the cap in the other direction frees the mechanism of the writing member mine from the compression force. The finger 241 is replaced in the zone C of the cam, thus allowing a new maneuver for a new advance of mine. Finally, a new rotation in the same direction as the previous one causes the rewriting of the writing member inside the instrument.

Les avantages de cette disposition sont multiples. Outre celui de permettre à l'utilisateur de pouvoir changer facilement de type d'écriture avec des organes d'écriture de type standard emmanchés avec un élément de liaison en matière plastique moulée donc économique, ce type de réalisation présente aussi deux autres avantages. Le premier est lié à l'ajout d'un organe élastique compensateur 18 et de l'espace "e", ajout qui confère d'une part un confort d'écriture puisque si l'utilisateur modifie sa pression d'écriture, ou bien écrit sur une surface dure, l'organe élastique est en mesure d'absorber ces variations de pression. D'autre part, il permet d'absorber les variations dimensionnelles dans la longueur du mécanisme mine en évitant une mise en compression prématurée dudit mécanisme. Par ailleurs, il évite l'usure des organes dans le cas de l'usage d'un organe d'écriture bille possédant un épaulement 2.The advantages of this arrangement are manifold. In addition to allowing the user to be able to easily change the type of writing with standard type writing members fitted with a molded plastic connection element therefore economical, this type of embodiment also has two other advantages. The first is linked to the addition of an elastic compensating member 18 and the space "e", an addition which gives writing comfort on the one hand since if the user changes his writing pressure, or else written on a hard surface, the elastic organ is able to absorb these pressure variations. On the other hand, it allows to absorb dimensional variations in the length of the mine mechanism while avoiding premature compression of said mechanism. Furthermore, it avoids wear of the members in the case of the use of a ball-point writing member having a shoulder 2.

Un quatrième mode de réalisation est décrit ci-après. L'instrument à écrire est constitué (figures 23a, 23b, et 23c) d'un corps composé de deux tubes mis bout-à-bout, comme précédemment, sensiblement de même diamètre, l'un appelé gaine 11 et l'autre capuchon 12. La gaine se trouve du côté de l'organe d'écriture et a de préférence une forme conique à son extrémité antérieure, munie d'une butée intérieure 111. Cet ensemble, formant corps, loge un entraîneur tubulaire central 23'' dans lequel l'utilisateur insère l'organe d'écriture, soit à bille, soit à mine. Il immobilise celui-ci dans l'entraîneur par exemple par l'intermédiaire d'un filetage formé à l'extrémité postérieure et recevant une vis ou un filetage complémentaire solidaire de l'élément de liaison 3, lui-même emmanché par déformation élastique sur le corps de la recharge bille ou du mécanisme mine. Une came cylindrique en cloche 35, de préférence en matière plastique surmoulée sur l'entraîneur tubulaire, est également logée. Celle-ci possède latéralement un ergot 351. Le développé de cette came (figure 24) comporte trois zones d'équilibre A', C' et E', deux pentes ascendantes B' et D' de même inclinaison et une pente descendante F', de préférence verticale. Les longueurs projetées des zones A' à E' sur un axe parallèle aux zones A', C' et E' sont égales. Un tube de guidage 37 entoure l'ensemble sur la portion antérieure. Ce tube présente latéralement une fente 371 sur une partie de sa longueur, ladite fente recevant un ergot 351. Un tube de commande 38 entoure l'ensemble sur le portion postérieure. Ce tube présente à son extrémité antérieure une came 39 en cloche, parfaitement conplémentaire de la came 35 et constituée de préférence en une matière plastique surmoulée sur ledit tube entraîneur (figure 25). Ce tube 38 présente localement à sa surface des dents 381 qui, s'introduisant dans les rainures internes longitudinales 121 du capuchon 12, lui permettent d'être libre en translation par rapport au dit capuchon, mais lié en rotation par rapport à celui-ci. Un ressort de rappel 30 est monté entre l'extrémité antérieure de l'entraîneur et la came 35.Il tend à maintenir en position rentrée l'entraîneur tubulaire central par l'intermédiaire de la came 35. Un insert 31 est emmanché à force dans la gaine 11. Cet insert présente à son extrémité postérieure un ergot 311 s'introduisant dans la fente 371 du tube de guidage 37 et l'immobilisant en rotation. Divers organes de fixation sont également contenus, tels qu'une vis 32 permettant de solidariser en translation l'ensemble tube de commande 38 et came 39 par l'intermédiaire d'un joint de serrage 43, un élément élastique 120' fixé dans le capuchon 12 par la vis 22 serrée à son extrémité et retenant par friction le capuchon 12 sur le tube de commande 38, et une agrafe 20 fixée sur le capuchon 12 par ladite vis 22.A fourth embodiment is described below. The writing instrument consists (Figures 23a, 23b, and 23c) of a body composed of two tubes placed end to end, as before, substantially of the same diameter, one called sheath 11 and the other cap. 12. The sheath is on the side of the writing member and preferably has a conical shape at its anterior end, provided with an internal stop 111. This assembly, forming a body, houses a central tubular driver 23 '' in which the user inserts the writing device, either ball or lead. It immobilizes the latter in the driver, for example by means of a thread formed at the rear end and receiving a screw or a complementary thread secured to the connecting element 3, itself fitted by elastic deformation on the body of the ball refill or the mine mechanism. A cylindrical bell-shaped cam 35, preferably made of plastic overmolded on the tubular driver, is also housed. This has a lug 351 laterally. The development of this cam (FIG. 24) comprises three equilibrium zones A ', C' and E ', two ascending slopes B' and D 'of the same inclination and a descending slope F' , preferably vertical. The projected lengths of zones A 'to E' on an axis parallel to zones A ', C' and E 'are equal. A guide tube 37 surrounds the assembly on the anterior portion. This tube laterally has a slot 371 over a part of its length, said slot receiving a lug 351. A control tube 38 surrounds the assembly on the rear portion. This tube has at its anterior end a bell-shaped cam 39, perfectly complementary to the cam 35 and preferably made of a plastic material overmolded on said driving tube (FIG. 25). This tube 38 presents locally at its surface of the teeth 381 which, being introduced into the longitudinal internal grooves 121 of the cap 12, allow it to be free in translation relative to said cap, but linked in rotation relative to the latter. A return spring 30 is mounted between the front end of the driver and the cam 35. It tends to keep the central tubular driver in the retracted position by means of the cam 35. An insert 31 is force-fitted into the sheath 11. This insert has at its rear end a lug 311 which is introduced into the slot 371 of the guide tube 37 and immobilizes it in rotation. Various fixing members are also contained, such as a screw 32 making it possible to secure in translation the control tube 38 and cam 39 assembly by means of a tightening joint 43, an elastic element 120 ′ fixed in the cap. 12 by the screw 22 tightened at its end and frictionally retaining the cap 12 on the control tube 38, and a clip 20 fixed to the cap 12 by said screw 22.

Le fonctionnement est d'abord décrit avec un organe d'écriture à bille partant d'une position rentrée. (figure 26a et 26b).The operation is first described with a writing device with a ball starting from a retracted position. (Figures 26a and 26b).

La rotation relative du capuchon 12 par rapport à la gaine 11 entraîne dans son mouvement le tube de commande 38 qui transmet ce mouvement à la came 39. La rotation de cette came 39 provoque la translation de la came 35 qui est immobilisée en rotation par l'intermédiaire de l'ergot 351 coulissant dans la fente 371 du tube 37. Cette translation provoque la translation de l'entraîneur tubulaire 23'' qui détermine l'avance et la sortie de l'extrémité de l'organe d'écriture (figure 27a) dont l'éventuel épaulement 2 se positionnera presque en appui sur la butée 111. De plus, pendant cette rotation et grâce à la symétrie des développés des cames, le frottement se réalise simultanément sur les surfaces parallèles correspondantes B et B' et D et D', réduisent ainsi fortement l'usure des pièces. Lorsque la rotation a conduit la partie C de la came 39 en regard de la zone A' de la came 35 (figure 27b), aucun mouvement de translation n'a lieu. La rotation relative du capuchon par rapport à la gaine dans le sens inverse permet à la zone A de la came 39 de se positionner en regard de la zone A' de la came 35, comme précédemment, autorisant ainsi le recul de ladite came 35 sous l'action du ressort 30. Cette came entraîne le recul de l'entraîneur, donc la rentrée de l'organe d'écriture.The relative rotation of the cap 12 relative to the sheath 11 causes in its movement the control tube 38 which transmits this movement to the cam 39. The rotation of this cam 39 causes the translation of the cam 35 which is immobilized in rotation by the 'intermediate of the lug 351 sliding in the slot 371 of the tube 37. This translation causes the translation of the tubular driver 23''which determines the advance and the output of the end of the writing member (figure 27a), the possible shoulder 2 of which will be positioned almost in abutment on the stop 111. In addition, during this rotation and thanks to the symmetry of the developed cams, the friction is carried out simultaneously on the corresponding parallel surfaces B and B 'and D and D ', thus greatly reduce the wear of the parts. When the rotation has driven part C of cam 39 opposite zone A ' of the cam 35 (FIG. 27b), no translational movement takes place. The relative rotation of the cap relative to the sheath in the opposite direction allows the zone A of the cam 39 to be positioned opposite the zone A 'of the cam 35, as before, thus authorizing the retraction of said cam 35 under the action of the spring 30. This cam causes the retraction of the trainer, therefore the reentry of the writing member.

Le fonctionnement est maintenant décrit avec un organe d'écriture à mine partant d'une position rentrée (figure 28a et 28b).The operation is now described with a lead writing device starting from a retracted position (FIGS. 28a and 28b).

La rotation relative du capuchon 12 par rapport à la gaine 11 provoque les mêmes mouvements que dans le cas précédent et entraîne donc l'avance et la sortie de l'extrémité de l'organe d'écriture mine. Lorsque la rotation a conduit la zone C de la came 39 en regard de la zone A' de la came 35 (figure 29a et 29b), aucun mouvement de translation n'a lieu. Si la rotation est prolongée, la zone D de la came 39 se trouve en regard de la zone A' de la came 35 (figure 30b) entraînant ainsi une translation supplémentaire de ladite came 35 qui provoque un nouveau déplacement de l'entraîneur, déplacement qui induit une conpression du sous-ensemble mine qui provoque ainsi une sortie de mine (figure 30a). Le fait de relâcher le capuchon permet à la came 35 de reculer sous l'action du ressort 30, provoquant ainsi une rotation inverse spontanée de la came 39 jusqu'à la position d'équilibre d'écriture (zone C de la came 39 en regard de la zone A' de la came 35). La rotation relative du capuchon par rapport à la gaine dans le sens inverse jusqu'à positionner la zone A de la came 39 en regard de la zone A' de la came 35, provoque les mêmes mouvements que dans le cas d'un organe d'écriture à bille et par conséquent une rentrée de l'organe d'écriture à mine.The relative rotation of the cap 12 with respect to the sheath 11 causes the same movements as in the previous case and therefore causes the advance and the exit of the end of the lead writing member. When the rotation has driven zone C of the cam 39 opposite the zone A 'of the cam 35 (FIGS. 29a and 29b), no translational movement takes place. If the rotation is prolonged, the zone D of the cam 39 is located opposite the zone A 'of the cam 35 (FIG. 30b) thus causing an additional translation of said cam 35 which causes a new displacement of the driver, displacement which induces a compression of the mine sub-assembly which thus causes an exit from the mine (FIG. 30a). Releasing the cap allows the cam 35 to move back under the action of the spring 30, thus causing spontaneous reverse rotation of the cam 39 to the writing equilibrium position (zone C of the cam 39 in look at zone A 'of cam 35). The relative rotation of the cap relative to the sheath in the opposite direction until the zone A of the cam 39 is positioned opposite the zone A 'of the cam 35, causes the same movements as in the case of a member 'ballpoint writing and therefore a reentry of the lead writing device.

Dans ce type de réalisation, outre les avantages déjà cités, à savoir la possibilité dans un instrument à écrire de faible diamètre de choisir entre deux types d'écriture moyennant un changement très simple de l'organe d'écriture, mine ou bille, l'utilisation d'un mécanisme à double came apporte les avantages supplémentaires suivants.In this type of embodiment, in addition to the advantages already mentioned, namely the possibility in a writing instrument of small diameter to choose between two types of writing by means of a very simple change of the organ. writing, lead or ball, the use of a double cam mechanism brings the following additional advantages.

Il est avantageux de donner aux cames 35 et 39 un développé selon lequel elles possèdent trois zones d'équilibre A, C et E, (A', C' et E'), les deux premières permettant à l'utilisateur de trouver aisément les deux configurations habituelles de positionnement des organes d'écriture. Dans le cas de l'usage d'un organe d'écriture mine, la troisième zone d'équilibre E présente un grand intérêt pour l'utilisateur. En effet, dans les instruments à écrire classiques équipés d'un mécanisme à pince de ce type, lorsque des morceaux de mine brisés ou de diamètre trop important ont bloqué les organes du mécanisme, l'utilisateur doit effectuer une opération fastidieuse, qui consiste à maintenir d'une main le mécanisme en position comprimée, et de l'autre main, à introduire par l'extrémité antérieure de l'instrument la tige habituellement fournie et qui permet de repousser les morceaux de mine. Avec une came conférant une position maintenue d'équilibre ou troisième position du mécanisme en position comprimée (figures 31a et 31b), ce qui, consécutivement au mouvement ayant provoqué l'avance d'une portion de mine, a positionné la pince située dans ledit mécanisme dans la position ouverte, avec compression du ressort 30, cette manipulation devient particulièrement aisée, car la conpression ne sollicite plus l'opérateur.It is advantageous to give cams 35 and 39 a press according to which they have three equilibrium zones A, C and E, (A ′, C ′ and E ′), the first two allowing the user to easily find the two usual configurations for positioning the writing organs. In the case of the use of a mine writing member, the third equilibrium zone E is of great interest to the user. Indeed, in conventional writing instruments equipped with a clamp mechanism of this type, when broken pieces of mine or of too large diameter have blocked the organs of the mechanism, the user must perform a tedious operation, which consists in maintain with one hand the mechanism in the compressed position, and with the other hand, to introduce through the anterior end of the instrument the rod usually supplied and which makes it possible to repel the pieces of lead. With a cam conferring a maintained equilibrium position or third position of the mechanism in the compressed position (Figures 31a and 31b), which, following the movement which caused the advance of a portion of mine, positioned the clamp located in said mechanism in the open position, with compression of the spring 30, this manipulation becomes particularly easy, since the compression no longer requests the operator.

La forme particulière du développé de came de la figure 32 telle que décrite précédemment sera préférentiellement utilisée dans les instruments de petit diamètre car elle permet malgré une faible circonférence d'obtenir des pentes permettant une manoeuvre douce pour l'utilisateur et sans risque d'usure pour les pièces en mouvement. La forme de came de la figure 33 peut être utilisée dans des instruments de plus gros diamètre autorisant un développé de came plus important, et permettant ainsi une commande du mécanisme par rotation dans un sens ou dans l'autre.The particular shape of the cam press in FIG. 32 as described above will preferably be used in small diameter instruments because it allows, despite a small circumference, to obtain slopes allowing a gentle maneuver for the user and without risk of wear. for moving parts. The shape of the cam in FIG. 33 can be used in instruments of larger diameter allowing a larger cam development, and thus allowing control of the mechanism by rotation in one direction or the other.

D'autres variantes de réalisation sont encore possibles. Ainsi, dans le but de faciliter l'introduction de la recharge mine ou bille, on peut prévoir une ouverture rapide de l'instrument par un élément de couvercle latéral à engagement de fermeture par clipsage, et un système de positionnement rapide de la recharge sur l'entraîneur (sur des butées de positionnement avec engagement en clipsage), l'élément de couvercle se refermant par simple pression et s'ouvrant à l'aide d'une pastille.Other alternative embodiments are still possible. Thus, in order to facilitate the introduction of the mine or ball refill, it is possible to provide for a rapid opening of the instrument by a side cover element with closing engagement by clipping, and a rapid positioning system of the refill on the driver (on positioning stops with engagement in clipping), the cover element closing by simple pressure and opening with a pad.

L'organe de manoeuvre peut encore comporter un élément de commande sélective en fonction de l'organe d'écriture utilisé, par exemple une molette à tourner selon que l'on utilise une recharge mine ou bille, autorisant la compensation de longueur des recharges mine ou bille. Cet élément peut encore agir sur le ressort de compensation d'entraînement de l'entraîneur en le tarant différentiellement selon qu'il s'agit d'une recharge mine (plus durement) ou d'une recharge à bille.The operating member may also include a selective control element as a function of the writing member used, for example a turning wheel depending on whether a mine or ball refill is used, authorizing compensation for the length of mine refills or ball. This element can also act on the drive compensation spring of the trainer by taring it differently depending on whether it is a mine refill (harder) or a ball refill.

Claims (10)

  1. A writing implement comprising a single driving member (12, 23, 23', 23'') accommodated or formed within it and capable of receiving, in accordance with the choice of the user, a ball type writing member or a lead type writing member (1, 1'), consisting in the conventional manner of a ball-point refill or a lead mechanism ensuring defined advance of the lead when it is subjected to compression against a suitable stop (111) at its front end, and a control member capable of moving said driving member translationally, as a result of manoeuvring of this member by the user, into a first position in which the writing member has moved out of the implement with a view to its utilisation and a second, inoperative position in which it is withdrawn inside, said driving member being a tubular member guided and actuated coaxially with the body of the implement, characterized in that each of the writing members, of the lead or ball type, is associated with a connecting element (3, 3') mounted on the driving member and to which is attached the writing member, this element being an intermediate member between the writing member proper and the mobile driving member, coaxial with the driving member and transmitting fully to the writing member the movement communicated to the driving member, acting as a compensator with respect to the different lengths of the (lead or ball) writing members, as an adaptor to the driving member for fastening thereto and as a means of easing manipulation by the user, for example by serration of its surface, and in that said driving member (12, 23, 23', 23'') may be moved to a third position in which the lead mechanism of the lead writing member (1') is kept open by compression of the lead writing member against said stop (111) for said advance of the lead.
  2. A writing implement according to claim 1, characterized in that said driving member consists of part of the body of the implement, for example the rear cap part (12).
  3. A writing implement according to claim 1, characterized in that the ballpoint refill or the lead mechanism, constituting the writing member proper, are fixed by coupling of their rear tubular end parts to the connecting element (3, 3') firmly connected with the driving member.
  4. A writing implement according to claim 1, characterized in that the connecting element (3, 3') is mounted firmly connected to the driving member by screw connection of its rear end.
  5. A writing implement according to claim 1, characterized in that the connecting element (3, 3') is firmly connected to the driving element by a clip engagement connection, for example through the intermediary of a slit resilient ring (33) engaging in a suitable complementary groove (231') in the driving member.
  6. A writing implement according to any one of the preceding claims, characterized in that it comprises an intermediate resilient member (17, 18, 30) for driving the driving member, capable of absorbing excess manoeuvring pressures and improving the user's writing comfort.
  7. A writing implement according to any one of the preceding claims, characterized in that the driving member is moved by a translational mechanism with manoeuvring end piece formed, for example, at the rear part of the implement, this mechanism having recourse to conventional movement conversion members, such as translational movement by screwing effect (112, 123), translational movement with positional catching (6), translational movement by rotation on a cam profile(s) (241, 271; 35, 39) with various positions of equilibrium.
  8. A writing implement according to claim 7, characterized in that said mechanism for manoeuvring the driving member comprises two bell cams (35, 39) complementary to each other, one being rotationally immobilised but translationally mobile and the other translationally immobilised and rotationally mobile, the cam evolute comprising three zones of equilibrium corresponding to the respective positions of withdrawal of the writing member, extension of the writing member and lead supply of the lead member.
  9. A writing implement according to any one of the preceding claims, characterized in that it opens laterally along a portion of its body for easy, rapid positioning of the writing member against suitable positioning stops on the driving member.
  10. An implement according to any one of the preceding claims, characterized in that the member for manoeuvring the driving member uses a selective manoeuvring wheel in accordance with the writing member used, permitting, for example, length compensation of the lead or ballpoint refills and/or differentially scaling the intermediate spring of the driving member.
EP93400103A 1992-01-21 1993-01-18 Writing instrument with mechanical pencil or ball point pen Expired - Lifetime EP0553011B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9200597A FR2686291B1 (en) 1992-01-21 1992-01-21 WRITING INSTRUMENT WITH A MINE OR BALL WRITING MEMBER.
FR9200597 1992-01-21

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EP0553011A1 EP0553011A1 (en) 1993-07-28
EP0553011B1 true EP0553011B1 (en) 1995-07-26

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EP93400103A Expired - Lifetime EP0553011B1 (en) 1992-01-21 1993-01-18 Writing instrument with mechanical pencil or ball point pen

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EP (1) EP0553011B1 (en)
JP (1) JPH0687291A (en)
AT (1) ATE125497T1 (en)
DE (1) DE69300285T2 (en)
ES (1) ES2075761T3 (en)
FR (1) FR2686291B1 (en)
GR (1) GR3017524T3 (en)

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DE69308191T2 (en) * 1992-12-03 1997-09-18 Kotobuki & Co Ltd Writing instrument
GB9406837D0 (en) * 1994-04-07 1994-06-01 Parker Pen Bv Propelling pencil mechanism
JP4478972B2 (en) * 2003-08-07 2010-06-09 三菱鉛筆株式会社 Knock-type writing instruments and mechanism of knock-type writing instruments

Citations (1)

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Publication number Priority date Publication date Assignee Title
FR1004813A (en) * 1947-05-16 1952-04-03 Improvements to pen and mechanical pencils

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CH256550A (en) * 1946-10-07 1948-08-31 Ag Brac Multicolor pen.
FR1252896A (en) * 1960-02-29 1961-02-03 Christian Ets Method of presentation for the sale of writing instruments, in spare parts, allowing the assembly and transformation of these instruments at the option of the user
JPS5612072Y2 (en) * 1978-03-31 1981-03-19
JPH0442154Y2 (en) * 1986-01-04 1992-10-05
EP0378724A1 (en) * 1989-01-19 1990-07-25 KOTOBUKI &amp; CO., LTD. A combined writing tool

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Publication number Priority date Publication date Assignee Title
FR1004813A (en) * 1947-05-16 1952-04-03 Improvements to pen and mechanical pencils

Also Published As

Publication number Publication date
EP0553011A1 (en) 1993-07-28
FR2686291B1 (en) 1996-11-29
GR3017524T3 (en) 1995-12-31
ES2075761T3 (en) 1995-10-01
FR2686291A1 (en) 1993-07-23
JPH0687291A (en) 1994-03-29
DE69300285T2 (en) 1996-02-29
ATE125497T1 (en) 1995-08-15
DE69300285D1 (en) 1995-08-31

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