EP2150416A2 - Device for mounting a movably mounted lockable cover on the chassis of a thermal printing mechanism - Google Patents

Device for mounting a movably mounted lockable cover on the chassis of a thermal printing mechanism

Info

Publication number
EP2150416A2
EP2150416A2 EP08805752A EP08805752A EP2150416A2 EP 2150416 A2 EP2150416 A2 EP 2150416A2 EP 08805752 A EP08805752 A EP 08805752A EP 08805752 A EP08805752 A EP 08805752A EP 2150416 A2 EP2150416 A2 EP 2150416A2
Authority
EP
European Patent Office
Prior art keywords
cover
axis
lid
housing
closed position
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.)
Granted
Application number
EP08805752A
Other languages
German (de)
French (fr)
Other versions
EP2150416B1 (en
Inventor
Denis Montagutelli
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.)
APS Manufacturing EOOD
Original Assignee
APS Engineering SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by APS Engineering SARL filed Critical APS Engineering SARL
Priority to PL08805752T priority Critical patent/PL2150416T3/en
Publication of EP2150416A2 publication Critical patent/EP2150416A2/en
Application granted granted Critical
Publication of EP2150416B1 publication Critical patent/EP2150416B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/02—Platens
    • B41J11/04—Roller platens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/30—Embodiments of or processes related to thermal heads
    • B41J2202/31—Thermal printer with head or platen movable

Definitions

  • the invention is in the field of thermal printing mechanisms for delivering a thermally printed coupon from a printing medium arranged in a strip and packaged in a roll. It relates to such a mechanism and more particularly to the provisions relating to the loading of the roll and the application of the tape against a thermal print head.
  • Thermal printing mechanisms are commonly organized to deliver a coupon from a print medium which is arranged in packaged roll tape.
  • Such mechanisms mainly comprise a carrier chassis carrying means for conveying the tape to a thermal print head, against which the pull-down tape is kept pressed for printing.
  • the frame provides a compartment for receiving the web roll and for housing the thermal print head, and has a cover mounted movably on the chassis to allow a user access to the compartment. This access replaces an exhausted tape roll, and places the newly installed tape free end against the thermal print head.
  • it is known to rotateably mount on the cover a support and motorized roll of the strip against the print head.
  • the latter is provided with an elastic member for pushing towards the backing roll, so that the band can run against the print head by being elastically trapped between the latter and the backing roll.
  • the mobile mounting of the cover on the frame is a tilt and / or translation mount, or even a removable mounting of the cover on the frame.
  • the movable mounting of the cover makes it operable between an open position in which access to the interior volume of the compartment and to the environment of the print head is offered, and a closed position in which the cover caps the head of the printer. thermal printing and compartment.
  • the cover is likely to be reduced to a bearing member of the support roller, and is incidentally completed by a hood on which is mounted this carrier member.
  • the cover can be mounted movably on the frame via the carrier member or, if appropriate, via the cover.
  • cover a member may be simply constituted by the bearing member of the support roller or by this carrier member which is attached to a closing cap of the mechanism.
  • the support roller carried by the cover must be rigorously positioned on the frame when the lid is in the closed position, to make its engagement with rotating drive means and, if necessary, its relative positioning more reliable.
  • a cutting tool integrated in the lid or carried by the frame.
  • the support roller is used for this purpose from its mounting on the lid via its axis of rotation, not only in a rotating manner but also floating in translation along elongated slots receiving the respective ends of the this axis.
  • the chassis meanwhile comprises corresponding dihedral lights, along which are respectively guided the ends of the axis of the support roller when the lid is operated by the operator between its open and closed positions.
  • the elasticity of the support that takes the print head against the support roller is used to maintain the support roller in the bottom of the dihedral lights.
  • a voluntary maneuver exerted by the operator on the cover for its displacement in the open position causes a clearance of the axis out of the dihedral lights against the elastic thrust exerted by the printing head against the support roller .
  • the lid is pivotally mounted on the frame. To replace a tape roll, the operator moves the lid towards its open position to access the compartment, against the elastic thrust exerted by the print head against the backup roll.
  • EP1218200 APS ENGINEERING
  • EP1 135259 APS ENGINEERING
  • EP1218200 it is proposed to use a lever to operate the cover in the open position, which increases the thrust force exerted by the print head against the support roll in the position of closing the lid, while limiting the effort that must provide the operator to cause the passage of the lid in the open position.
  • the object of the present invention is to propose methods for loading a roll-conditioned printing tape inside a thermal printing mechanism, which takes into account the constraints that have just been stated. It is particularly aimed at by the present invention to provide a comfort of maneuvering the lid for the user, and a firm hold of the lid in the closed position. Such firm hold aims in particular to prevent unwanted movement of the cover towards its open position. It is also particularly targeted by the present invention to achieve these objectives without affecting the rigor of the positioning of the support roller on the frame in the closed position cover, and taking into account a size of the chassis may be reduced, to allow an implementation of the cover and its mobility on any thermal printing mechanism, for the lowest possible cost.
  • the arrangement of such a device is sought so as to reconcile the ease of maneuvering the lid between its open and closed positions, and a firm hold of the lid in the closed position which prohibits any unwanted maneuver of the to its open position.
  • This device is also searched for a simple structure and space as small as possible, to not increase its size and therefore allow its implementation on any thermal printing mechanism.
  • the invention also relates to a thermal printing mechanism equipped with such a mounting device.
  • the device of the present invention is a device for mounting a lid mounted movably between an open position and a closed position on the frame of a thermal printing mechanism.
  • This mobile assembly of the cover is preferably a mounting tilt cover on the chassis.
  • the mobility of the cover relative to the frame allows a clearance or alternatively a cover of a receiving compartment of a printing tape roll and a print head that includes the mechanism.
  • This mobility of the cover also makes it possible, in the closed position, to press a support roller which bears elastically against the printing head, in particular in response to a reverse thrust exerted by elastic means which the mechanism comprises. and which are assigned to the print head.
  • the cover is likely to be reduced to a bearing member of the support roller, and is incidentally completed by a hood on which is mounted this carrier member.
  • the cover can be mounted movably on the frame via the carrier member, or possibly by means of the cover.
  • this mounting device comprises:
  • first lights a support roller rotatably mounted on the cover via its axis, said axis being housed inside first elongate slots that includes the cover.
  • the elongated conformation of these first lights is to be understood in that it gives them an ability to allow movements of rotation and translation of the support roller relative to the cover.
  • These arrangements are such that the support roller is guided in mobility on the lid not only in rotation, but also in translation from a movement of its axis along the first lights.
  • the freedom of movement of the backing roller with respect to the cover, and more particularly the conformation of the first lumens are arranged to guide the support roller engaged on the chassis when the cover is moved towards its position. closing position.
  • first lights are formed laterally vis-à-vis the cover, and are of corresponding conformation to allow such guidance of the support roller on the cover.
  • second lights which are formed in the frame for receiving the axis of the support roller. These second lights are open for the introduction of the axis and comprise a blind housing for receiving the axis at their bottom in the closed position of the lid. These second lights comprise in particular an upstream portion which is open to allow introduction of the axis, and a downstream portion which is blind for blocking the axis at the bottom of the second lights under the effect of a thrust exerted by elastic means.
  • the upstream and downstream parts are to be considered in the direction of mobility of the cover towards its closed position, and are likely to be oriented dihedral relative to each other.
  • the second lights are formed laterally vis-à-vis the frame, and are of corresponding conformation for guiding the support roller on the frame.
  • Said conformation correspondence between the lights is made according to the dimensions and conformations specific to the ends of the axis that they respectively receive. According to a simple embodiment, this correspondence is a similar conformation of the lights between them, identical or even homothetic.
  • elastic means bearing against the frame to exert a thrust against the support roller and maintain its axis at the bottom of the housing in the closed position of the lid.
  • the operation of the support roller jointly along the first and second lights is caused from a combination associating the displacement of the lid between its open and closed positions, the thrust exerted by the elastic means towards the roller of support, and antagonistic support that takes the axis respectively against the cover and against the frame through the lights that they respectively comprise.
  • the tilting of the lid towards its closed position is preferably carried out simply by means of a pushing gesture applied by the user at least against the cover to fold it down to the frame.
  • such a device for mounting the lid on the chassis in mobility is mainly recognizable in that the second lights are arranged fixed in the frame, and in that it comprises means for locking the elastic support of the frame. axis at the bottom of the housing.
  • These locking means are constituted by the cooperation of the opposing supports that the axis takes respectively against the housing and the first lights in the closed position of the lid.
  • These antagonistic supports constitute means of retaining the cover against its movement towards its open position, in the absence of a prior escape from the axis outside the housing.
  • Such retaining means constitute irreversible engagement means of the cover on the frame, otherwise to extract the axis out of the housing from a specific movement which is excluded a mobility of the lid to its open position.
  • the irreversibility of this interlocking is preferably strict, or at least constitutes an obstacle to maneuvering the cover towards its open position in the absence of a specific extraction of the axis out of the housing.
  • This obstacle is opposed to a maneuvering of the lid towards its open position, and is at least a disincentive and / or uncomfortable discomfort for the user when maneuvering the lid to its open position.
  • the retaining means are means able to strictly prohibit a displacement of the cover towards its open position in the absence of a prior escape from the axis out of the housing operated by the user.
  • the authorization of this mobility is subject to the condition of a prior displacement of the axis out of the housing.
  • the invention also relates to a device for mounting a lid mounted movably between an open position and a closed position on a chassis of a thermal printing mechanism, this device comprising: a support roller mounted to rotate on the cover via its axis, said axis being housed inside first elongate slots that includes the cover; second lights provided in the frame for receiving the axis of the support roller, these second lights being open for the introduction of the axis and comprising a blind housing for receiving the axis at their bottom in the closed position of the lid; elastic means bearing against the frame to exert a thrust against the support roller and maintain its axis at the bottom of the housing in the closed position of the lid; in which the second lights are arranged fixed in the frame, and comprising means for locking the elastic retention of the axis at the bottom of the housing, these locking means being constituted by the cooperation of the counterforce supports that the axis takes respectively against the housing and the first lights in the closed position of the cover, these antagonistic supports constituting means for retaining the cover against its movement towards its
  • the unlocking thrust is effected on the axis of the support roller or, in an equivalent manner, on the rubber of the support roller.
  • the implementation of the abutment means induces a rigorous prohibition, if not at least an obstacle or even an inconvenience, to a mobility of the cover towards its open position, which can only be broken when a movement of the axis out of housing.
  • the mounting device incorporates retaining means adapted to impose a succession of two distinct movements to allow a mobility of the lid from its closed position to its open position.
  • the mounting means are organized as holding means of the lid in the closed position by means of the trapping of the axis jointly inside the first and second lights, and locking means of this trapping.
  • This trapping is obtained from the supports that take the axis jointly inside. first and second lights, which simplifies the actions that the user must perform to maneuver the lid to its open position.
  • the antagonistic supports constituting the retaining means more particularly induce reaction forces against a movement of the cover from its closed position to its open position, which tend at least to maintain the axis in a stable position at the same time. interior of the first lights and second lights, otherwise to induce a repulsion force of the axis in the bottom of the housing in addition to the thrust forces exerted by the elastic means.
  • the orientation and / or the relative positions between the first lights and the housings correspond to a bearing against them of the axis which generates, in response to a force applied on the cover for its passage to its open position, at least a neutral reaction force oriented substantially parallel to said applied force, otherwise a reaction force comprising a component causing a repulsion of the axis towards the bottom of the housing and incidentally first lights.
  • the counteracting bearing corresponds in particular to a first point of support of the axis against the second light and a second point of support of the axis against the first light which are aligned along a generatrix of the axis.
  • This antagonistic support formation forms retaining means able not only to maintain the lid in the closed position, but also to lock this holding against a movement of movement of the lid towards its open position in the absence of an extraction of the axis out of the housing.
  • the retaining means consist of at least one pair of opposing supports that the axis takes respectively against the housing and the first lights in the closed position of the cover, these opposing supports being aligned along a generatrix of the axis.
  • These provisions induce a radial alignment of the support bearing reactions of the axis jointly on the frame and on the cover in the closed position of the latter, in comparison with its escape from the housing under the effect of a maneuver in movement of the cover towards its open position.
  • the axis is likely to be moved out of the housing from a direct grip by the user.
  • This direct grip is a unique gesture that the user must provide to move the lid in the open position in the advantageous case where said ramp is used to cause a spontaneous movement of the lid to its open position.
  • the thrust member is advantageously constituted by at least one thrust finger provided on a lever which is indifferently pivotally mounted on the frame or on the cover.
  • the arrangement of the thrust member lever provides satisfactory ergonomics to cause the opening of the lid from a simple gesture made by the user on the corresponding end of the lever.
  • the lever is preferably hinged to the lid and is arranged in a pair of side plates disposed at a respective side of the lid. These plates are each pivotally articulated on the cover and are provided with a thrust finger of the corresponding end of the axis.
  • An actuator lever member by the user longitudinally connects the plates to one another to cause their joint pivoting.
  • the arrangement of the thrust member in plates articulated laterally on the frame and connected by a common longitudinal operating member avoids a bulk of the area of the frame receiving the thermal print head to facilitate the installing the end of the newly loaded tape.
  • the operation of the lever in the closed position of the lid is adapted to be performed from the pushing gesture that the user makes on the lid to move it to its closed position. It follows that, from a single pushing action on the lid, the lid is placed in the closed position, is held in this position, and this holding is locked. Conversely, from a single gesture of maneuvering the lever, the unlocking of the cover is maintained and it is moved to its open position.
  • the thrust member is associated with an accompanying member of the mobility of the cover towards its open position.
  • this support member is capable of being connected to the thrust member for, when unlocking the holding of the lid in the closed position, pushing back on the lid towards its open position at least 1 escape from the axis out of the second lights, if not from the extraction of the axis out of the housing.
  • This connection is likely to be a mobility link allowing a maneuver independent of the support member with respect to the thrust member.
  • the support member is provided on the lever being oriented, in the general plane of mobility of the cover, in particular rocking, with an angular offset relative to the orientation of the thrust fingers.
  • This angular offset corresponds in particular to the distance that must traverse the pushing finger or fingers to extract the axis from the housing, prior to the support of the support member against the cover to maneuver to its position d 'opening.
  • the lever arm is supported on the frame to allow the implementation of the accompanying member.
  • This guide ramp is advantageously that used to place under stress the elastic means prior to their release to repel the axis at the bottom of the housing. Since the organization of the means for holding the lid in the closed position coincides with the organization of the retaining means, the structure of the mounting device can be simply organized to allow a maneuvering of the lid towards its open position from a unique gesture of the user extracting the shaft out of the housing.
  • the elastic means are used, these elastic means being able not only to push the axis at the bottom of the housing, but also able to cause the mobility of the lid, in particular tilting, to its open position after extraction of the axis out of the housing. It generally results in a simplification of the structure of the mounting device and ease of operation of the cover towards its open position, without affecting the quality of its locking in the closed position.
  • the second lights are advantageously of the type comprising, upstream of the housing, a ramp for guiding the axis against a stressing and / or a progressive release of the elastic means, caused by a maneuver of the lid respectively. at closing and opening.
  • the guide ramp is formed by the edge of a largely open clearance that includes the second lights to allow easy introduction of the axis.
  • the upstream position of the ramp is to be considered with regard to the direction of mobility of the cover towards its closed position.
  • the proposed organization of the retaining means disassociates the holding of the lid in the closed position and the positive locking of its holding independently of the own organization of the elastic means. These arrangements make it possible to organize the elastic means constituting the means for maintaining the lid in the closed position, independently of the retaining means capable of locking this holding. These arrangements are such that the elastic means are likely to be indifferently specific elastic means or elastic means attached to the implementation of another mechanism member, including thermal printing head.
  • the proposed organization of the retaining means makes it possible to avoid complicating the structure of the device for the installation of the elastic means, these not participating in the positive locking of the holding of the lid in the closed position. Such a simplification of structure makes it possible to limit the size and the costs of obtaining the device, and to allow its easy implementation on any printing mechanism, including on a small mechanism.
  • the elastic means are coincident with those of which is provided with a thermal printing head equipping the mechanism for its plating to the support roller.
  • the invention also relates to a thermal printing mechanism in which is integrated a mounting device as just described.
  • Fig.1 to fig.4 are profile diagrams representing a device for mounting a cover mounted on the frame of a thermal printing mechanism according to the arrangements provided by the present invention, which successively illustrate the mobility of this cover.
  • the fig.5 to fig.8 are representations of the device shown schematically in Fig.1 to Fig.4, which illustrate in perspective the mobility of the cover respectively shown in these figures.
  • a thermal printing mechanism comprises a frame 1 housing a thermal printing head 2 intended to print a band-conditioned printing medium.
  • a lid 3 is movably mounted on the frame 1, such as tilting or the like, between an open position shown in Fig.4 and Fig.8, and a closed position shown in Fig.2 and Figs. 6.
  • This cover 3 carries a support roll 4, intended to hold the band pressed against the print head 2 in the closed position of the lid 3.
  • This plating results from a thrust R exerted by the print head 2 to the support roller, via elastic means 5 which are assigned to the print head 2 and which are engaged on the frame 1.
  • the support roller 4 is carried by the cover 3 via its axis 6.
  • the cover 3 comprises first elongated slots 7 for receiving the ends of the axis 6.
  • These first lights 7 allow a mobility of the support roll 4 in rotation for driving the band, and in translation on the lid 3 during the movement of the latter between its open and closed positions.
  • This displacement in translation of the support roller 4 allows a circulation of the axis 6 along second lights 8 formed fixed on the frame 1.
  • These second lights 8 comprise an upstream portion 9 open for the introduction of the axis 6, and a downstream portion arranged in blind housing 10 for the reception at its bottom of the axis 6 in the closed position of the cover 3.
  • the axis 6 is maintained at the bottom of the housing 10 not only from the elastic thrust R exerted by the print head 2 on the support roll 4, but also from an arrangement of said antagonistic support points 13 which prohibits a mobility of the cover 3 in the absence of a prior extraction of the axis 6 out of the housings 10 that comprise the second lights 8.
  • the lid 3 is moved from its open position shown in FIGS. 4 and 8 to an insertion position of the axis 6 inside the upstream portion 9 of the second lumens 8, as shown in fig.1 and fig.5.
  • This displacement is caused by a pushing action P exerted by the user against the upper face of the cover 3, which induces a sliding bearing support of the axis 6 against a guide ramp 1 1 formed in the part upstream 9 second lights 8.
  • the support roller 4 exerts a push against the print head 2, the elastic retraction allows the passage of the axis 6 to the housing 10.
  • This irreversible engagement is obtained from the relative positions of the first lights 7 and the housings 10 which jointly receive the axis 6 so as to induce, under the effect of a force S to move the lid 3 towards its position. opening, reaction forces F of the axis 6 against the frame 1 and the cover 3 which prevent such a displacement of the cover 3 towards its open position.
  • the general orientations A respectively of the first lumens 7 and the corresponding housings 10 are merged, so that said reaction forces F are oriented substantially parallel to the general direction S of displacement of the cover 3 towards its position. openness or, by analogy, to an effort S aimed at such displacement.
  • reaction forces F and stress S are in particular oriented substantially perpendicular to the general orientation of the first lights 7 and the housings 10, taken in the corresponding zone of reception of the axis 6.
  • the bearing points 13 that the axis 6 takes respectively respectively against the first lights and against the housings are aligned along a generatrix of the axis 6.
  • a force S applied to the lid 3 according to its direction of movement towards its open position, induced reaction a force F of the axis 6 on the cover 3 and on the frame 1 may comprise a component C capable of causing a repulsion of the axis 6 at the bottom of the housing 10, in addition to the forces R exerted by the elastic means 5 on the support roller 4, and accordingly able to reinforce the locking of the holding of the cover 3 in the closed position.
  • the axis 6 is in the extraction position out of the housing 10. This extraction is caused by the user, from the operation of a lever 14 which is pivotally articulated indifferently on the frame 1, but preferably on the lid 3 as illustrated.
  • This lever 14 is composed of a pair of plates 15 arranged laterally on the cover 3 on either side of the support roller 4. These plates 15 are each provided with a thrust pin 16 of the axis 6 to encountering the thrust R exerted by the elastic means 5 equipping the print head 2.
  • These thrust fingers 16 are advantageously formed from the own conformation of the plates 15, which simplifies the structure of the device and to promote its realization at lower costs.
  • the plates 15 are interconnected by an operating member 17, shaped rod or the like, which extends parallel to the support roller 4.
  • the axis 6 is pushed G out of the housing 10 and the opening of the lid 3 is allowed.
  • the user applies a thrust P jointly against the lever 14 and against the upper face of the cover 3, to cause the closing position of the lid 3 and a locking of its holding in this position .

Abstract

The subject of the invention is a device for mounting, such that it can move, a cover (3) on the chassis (1) of a thermal printing mechanism. A press roller (4) is mounted, capable of rotational and translational movement, on the cover (3) via the spindle (6) thereof, and the chassis (1) has a fixed blind housing (10) to accommodate the spindle (6) when the cover (3) is in the closed position. Elastic means (5) apply thrust against the press roller (4) to keep the spindle (6) thereof well inside the housings (10). Cooperation between the opposing means of support (13) that the spindle (6) adopts, against the chassis (1) and against the cover (3), constitute means of keeping the cover (3) locked in the closed position, which means are able to restrain the cover (3) against its moving into its open position unless the spindle (6) has already escaped from the housing (10). The device further comprises a special-purpose unlocking member which, using thrust, causes the spindle to escape from the housing.

Description

Dispositif de montage d'un couvercle verrouillable monté mobile sur le châssis d'un mécanisme d'impression thermique Device for mounting a lockable cover movably mounted on the frame of a thermal printing mechanism
L'invention est du domaine des mécanismes d'impression thermique destinés à délivrer un coupon thermiquement imprimé à partir d'un support d'impression agencé en bande et conditionné en rouleau. Elle a pour objet un tel mécanisme et plus particulièrement des dispositions relatives au chargement du rouleau et à l'application de la bande contre une tête d'impression thermique.The invention is in the field of thermal printing mechanisms for delivering a thermally printed coupon from a printing medium arranged in a strip and packaged in a roll. It relates to such a mechanism and more particularly to the provisions relating to the loading of the roll and the application of the tape against a thermal print head.
Les mécanismes d'impression thermique sont couramment organisés pour délivrer un coupon issu d'un support à imprimer qui est agencé en bande conditionnée en rouleau. De tels mécanismes comprennent principalement un châssis porteur de moyens d'entraînement pour l'acheminement de la bande vers une tête d'impression thermique, contre laquelle la bande déroulante est maintenue plaquée pour son impression. Le châssis ménage un compartiment pour la réception du rouleau de bande et pour loger la tête d'impression thermique, et comporte un couvercle monté mobile sur le châssis pour permettre à un utilisateur d'accéder au compartiment. Cet accès permet de remplacer un rouleau de bande épuisé, et de placer l'extrémité libre de bande nouvellement installée contre la tête d'impression thermique. Pour appliquer la bande contre la tête d'impression thermique, il est connu de monter de manière tournante sur le couvercle un rouleau d'appui et d'entraînement motorisé de la bande contre la tête d'impression. Cette dernière est munie d'un organe élastique de poussée vers le rouleau d'appui, de sorte que la bande puisse défiler contre la tête d'impression en étant élastiquement emprisonnée entre cette dernière et le rouleau d'appui.Thermal printing mechanisms are commonly organized to deliver a coupon from a print medium which is arranged in packaged roll tape. Such mechanisms mainly comprise a carrier chassis carrying means for conveying the tape to a thermal print head, against which the pull-down tape is kept pressed for printing. The frame provides a compartment for receiving the web roll and for housing the thermal print head, and has a cover mounted movably on the chassis to allow a user access to the compartment. This access replaces an exhausted tape roll, and places the newly installed tape free end against the thermal print head. In order to apply the strip against the thermal print head, it is known to rotateably mount on the cover a support and motorized roll of the strip against the print head. The latter is provided with an elastic member for pushing towards the backing roll, so that the band can run against the print head by being elastically trapped between the latter and the backing roll.
Selon diverses variantes de réalisation, le montage mobile du couvercle sur le châssis est un montage en basculement et/ou en translation, voire un montage amovible du couvercle sur le châssis. Le montage mobile du couvercle le rend manœuvrable entre une position d'ouverture dans laquelle un accès au volume intérieur du compartiment et à l'environnement de la tête d'impression est offert, et une position de fermeture dans laquelle le couvercle coiffe la tête d'impression thermique et le compartiment. Selon la configuration du mécanisme et ses conditions d'implantation sur site, telle qu'une configuration du mécanisme pour son installation en kiosque ou en mécanisme de table, le couvercle est susceptible d'être réduit à un organe porteur du rouleau d'appui, et est accessoirement complété par un capot sur lequel est monté cet organe porteur. Le couvercle est susceptible d'être monté mobile sur le châssis par l'intermédiaire de l'organe porteur, voire le cas échéant par l'intermédiaire du capot. On comprendra donc par couvercle un organe susceptible d'être simplement constitué par l'organe porteur du rouleau d'appui ou par cet organe porteur qui est adjoint à un capot de fermeture du mécanisme.According to various alternative embodiments, the mobile mounting of the cover on the frame is a tilt and / or translation mount, or even a removable mounting of the cover on the frame. The movable mounting of the cover makes it operable between an open position in which access to the interior volume of the compartment and to the environment of the print head is offered, and a closed position in which the cover caps the head of the printer. thermal printing and compartment. Depending on the configuration of the mechanism and its conditions of implantation on site, such as a configuration of the mechanism for its installation in kiosk or table mechanism, the cover is likely to be reduced to a bearing member of the support roller, and is incidentally completed by a hood on which is mounted this carrier member. The cover can be mounted movably on the frame via the carrier member or, if appropriate, via the cover. One will understand by cover a member may be simply constituted by the bearing member of the support roller or by this carrier member which is attached to a closing cap of the mechanism.
Se pose le problème de l'antagonisme entre une manipulation aisée du couvercle par l'opérateur, tant à l'ouverture qu'à la fermeture, et un maintien fiable du couvercle en position de fermeture. Plus particulièrement, il est souhaitable que le couvercle soit efficacement maintenu en position de fermeture sur le châssis, de manière à interdire une ouverture accidentelle du couvercle, en cas de chute du mécanisme par exemple. Il est aussi recherché de conforter le maintien du couvercle en position de fermeture à rencontre de sa manœuvre indésirable en position d'ouverture, qui est susceptible d'être provoquée par l'utilisation d'une bande d'épaisseur conséquente et/ou par des efforts induits par un outil de coupe intégré au couvercle. Cependant, l'efficacité du maintien du couvercle en position de fermeture fait obstacle à l'aisance de sa manœuvre par un opérateur pour provoquer son passage de l'une à l'autre des positions d'ouverture et de fermeture. Par ailleurs, le rouleau d'appui porté par le couvercle doit être rigoureusement positionné sur le châssis lorsque le couvercle est en position de fermeture, pour fiabiliser sa mise en prise avec des moyens d'entraînement en rotation et le cas échéant son positionnement par rapport à un outil de coupe intégré au couvercle ou porté par le châssis. Selon une forme particulière de réalisation, il est connu de munir les mécanismes d'impression thermique de moyens d'emboîtement réversible entre le châssis et le couvercle pour maintenir ce dernier en position de fermeture. Le rouleau d'appui est exploité à cet effet à partir de son montage sur le couvercle par l'intermédiaire de son axe de rotation, non seulement de manière tournante mais aussi de manière flottante en translation le long de lumières allongées recevant les extrémités respectives de cet axe. Le châssis quant à lui comporte en correspondance des lumières en dièdre, le long desquelles sont respectivement guidées les extrémités de l'axe du rouleau d'appui lorsque le couvercle est manœuvré par l'opérateur entre ses positions d'ouverture et de fermeture. L'élasticité de l'appui que prend la tête d'impression contre le rouleau d'appui est exploitée pour maintenir le rouleau d'appui en fond des lumières en dièdre. Une manœuvre volontaire exercée par l'opérateur sur le couvercle pour son déplacement en position d'ouverture provoque un dégagement de l'axe hors des lumières en dièdre à rencontre de la poussée élastique exercée par la tête d'impression contre le rouleau d'appui. A titre d'exemple et selon une forme courante de réalisation, le couvercle est monté basculant sur le châssis. Pour remplacer un rouleau de bande, l'opérateur manœuvre en basculement le couvercle vers sa position d'ouverture pour accéder au compartiment, à rencontre de la poussée élastique exercée par la tête d'impression contre le rouleau d'appui. Le remplacement du rouleau de bande étant effectué, l'opérateur rabat le couvercle vers le châssis en position de fermeture, ce qui provoque la mise en appui élastique de la tête d'impression contre le rouleau d'appui par l'intermédiaire de la bande interposée entre eux. On pourra par exemple se reporter aux documents EP1218200 (A.P.S. ENGINEERING) et EP1 135259 (A.P.S. ENGINEERING) qui décrivent des mécanismes d'impression thermique comportant de telles dispositions. Plus particulièrement selon EP1218200, il est proposé d'utiliser un levier pour manœuvrer le couvercle en position d'ouverture, ce qui permet d'accroître l'effort de poussée exercée par la tête d'impression contre le rouleau d'appui en position de fermeture du couvercle, tout en limitant l'effort que doit fournir l'opérateur pour provoquer le passage du couvercle en position d'ouverture. Plus particulièrement encore selon EP1 135259, il est proposé d'agencer la mise en coopération entre les lumières en dièdre et l'axe du rouleau d'appui, de sorte que cet axe soit placé en fond de la lumière après son passage en position d'équilibre instable dans la zone d'intersection des parties amont et aval des lumières en dièdre. De telles solutions de montage du couvercle sont satisfaisantes, en offrant un confort de manipulation qui ne fait pas obstacle à un maintien ferme de l'axe en fond des lumières en dièdre. Cependant, un tel maintien mérite d'être conforté par des dispositions spécifiques permettant son verrouillage rigoureux.There arises the problem of the antagonism between an easy manipulation of the lid by the operator, both at opening and closing, and a reliable maintenance of the lid in the closed position. More particularly, it is desirable that the cover is effectively held in the closed position on the frame, so as to prevent accidental opening of the lid, in case of falling of the mechanism for example. It is also sought to consolidate the holding of the lid in the closed position against its unwanted maneuver in the open position, which is likely to be caused by the use of a strip of substantial thickness and / or by forces induced by a cutting tool integrated in the lid. However, the effectiveness of maintaining the lid in the closed position hinders the ease of its maneuver by an operator to cause its passage from one to the other opening and closing positions. Furthermore, the support roller carried by the cover must be rigorously positioned on the frame when the lid is in the closed position, to make its engagement with rotating drive means and, if necessary, its relative positioning more reliable. a cutting tool integrated in the lid or carried by the frame. According to a particular embodiment, it is known to provide the thermal printing mechanisms reversible interlocking means between the frame and the cover to maintain the latter in the closed position. The support roller is used for this purpose from its mounting on the lid via its axis of rotation, not only in a rotating manner but also floating in translation along elongated slots receiving the respective ends of the this axis. The chassis meanwhile comprises corresponding dihedral lights, along which are respectively guided the ends of the axis of the support roller when the lid is operated by the operator between its open and closed positions. The elasticity of the support that takes the print head against the support roller is used to maintain the support roller in the bottom of the dihedral lights. A voluntary maneuver exerted by the operator on the cover for its displacement in the open position causes a clearance of the axis out of the dihedral lights against the elastic thrust exerted by the printing head against the support roller . By way of example and according to a current embodiment, the lid is pivotally mounted on the frame. To replace a tape roll, the operator moves the lid towards its open position to access the compartment, against the elastic thrust exerted by the print head against the backup roll. With the replacement of the tape roll being performed, the operator folds the lid towards the frame in the closed position, which causes the print head to spring against the support roll by means of the tape. interposed between them. For example, reference may be made to EP1218200 (APS ENGINEERING) and EP1 135259 (APS ENGINEERING) which describe thermal printing mechanisms comprising such arrangements. More particularly according to EP1218200, it is proposed to use a lever to operate the cover in the open position, which increases the thrust force exerted by the print head against the support roll in the position of closing the lid, while limiting the effort that must provide the operator to cause the passage of the lid in the open position. More particularly still according to EP1 135259, it is proposed to arrange the cooperation between the dihedral lights and the axis of the support roller, so that this axis is placed in the bottom of the light after its passage in position d unstable equilibrium in the intersection zone of the upstream and downstream parts of the dihedral lights. Such lid mounting solutions are satisfactory, providing a comfortable handling that does not prevent a firm maintenance of the axis in the bottom of the dihedral lights. However, such a maintenance deserves to be reinforced by specific provisions allowing its rigorous locking.
Il est connu des solutions pour verrouiller le couvercle en position de fermeture sur le châssis, qui mettent en œuvre un loquet monté mobile sur le châssis. Ce loquet est manœuvrable par l'utilisateur entre une position de déverrouillage dans laquelle une manœuvre du couvercle à l'ouverture est autorisée, et une position de verrouillage dans laquelle le couvercle est bloqué sur le châssis tant que le loquet n'est pas manœuvré en position de déverrouillage. Les lumières que comporte le châssis pour recevoir l'axe du rouleau d'appui sont montées mobiles sur le châssis pour obtenir un verrouillage rigoureux du couvercle en position de fermeture sans faire obstacle à son déplacement vers cette position. Par exemple, il est proposé par FR2829964 (AXIOHM) de ménager ces lumières dans un loquet qui est monté élastiquement coulissant sur le châssis de manière à maintenir le rouleau d'appui plaqué contre la tête d'impression. Par exemple encore selon EP1602502 (SEIKO INSTRUMENT INC), un loquet agencé en crochet est monté pivotant sur le châssis pour emprisonner l'axe de rotation du rouleau d'appui en vue de son maintien en appui élastique contre la tête d'impression. Cependant, ces solutions sont inconfortables pour l'utilisateur, et confèrent aux modalités de montage du couvercle sur le châssis un caractère complexe, encombrant et coûteux, avec pour conséquence une inaptitude d'être implanté sur un quelconque mécanisme d'impression, et notamment sur un mécanisme de taille réduite.There are known solutions for locking the lid in the closed position on the chassis, which implement a latch mounted on the chassis. This latch is maneuverable by the user between an unlocking position in which an opening operation of the lid is authorized, and a locking position in which the lid is locked on the chassis until the latch is maneuvered in unlock position. The lights in the frame for receiving the axis of the support roller are movably mounted on the frame to obtain a rigorous locking of the cover in the closed position without hindering its movement to this position. For example, it is proposed by FR2829964 (AXIOHM) to arrange these lights in a latch which is elastically slidably mounted on the frame so as to keep the support roller pressed against the print head. For example still according to EP1602502 (SEIKO INSTRUMENT INC), a latch arranged in a hook is pivotally mounted on the frame to trap the axis of rotation of the support roller to maintain it elastically against the print head. However, these solutions are uncomfortable for the user, and give the mounting of the cover on the chassis a complex, cumbersome and expensive, with the consequent inability to be implanted on any printing mechanism, and especially on a mechanism of reduced size.
Le but de la présente invention est de proposer des modalités pour le chargement d'une bande à imprimer conditionnée en rouleau à l'intérieur d'un mécanisme d'impression thermique, qui prennent en compte les contraintes qui viennent d'être énoncées. Il est notamment visé par la présente invention de procurer un confort de manœuvre du couvercle pour l'utilisateur, et un maintien ferme du couvercle en position de fermeture. Un tel maintien ferme vise notamment à interdire un déplacement indésirable du couvercle vers sa position d'ouverture. Il est aussi notamment visé par la présente invention de parvenir à ces objectifs sans affecter la rigueur du positionnement du rouleau d'appui sur le châssis en position de fermeture du couvercle, et en prenant en compte un encombrement du châssis susceptible d'être réduit, pour permettre une implantation du couvercle et de ses modalités de mobilité sur un quelconque mécanisme d'impression thermique, pour un coût le plus faible possible. II est plus particulièrement visé par la présente invention de proposer un dispositif de montage en mobilité d'un couvercle sur le châssis d'un mécanisme d'impression thermique, permettant un verrouillage de son maintien en position de fermeture et sa manœuvre aisée en position d'ouverture. L'agencement d'un tel dispositif est recherché de manière à concilier l'aisance d'une manœuvre du couvercle entre ses positions d'ouverture et de fermeture, et un maintien ferme du couvercle en position de fermeture qui interdise toute manœuvre indésirable de celui-ci vers sa position d'ouverture. Ce dispositif est aussi recherché d'une structure simple et d'encombrement le plus faible possible, pour ne pas accroître son encombrement et en conséquence permettre son implantation sur un quelconque mécanisme d'impression thermique. L'invention a aussi pour objet un mécanisme d'impression thermique équipé d'un tel dispositif de montage.The object of the present invention is to propose methods for loading a roll-conditioned printing tape inside a thermal printing mechanism, which takes into account the constraints that have just been stated. It is particularly aimed at by the present invention to provide a comfort of maneuvering the lid for the user, and a firm hold of the lid in the closed position. Such firm hold aims in particular to prevent unwanted movement of the cover towards its open position. It is also particularly targeted by the present invention to achieve these objectives without affecting the rigor of the positioning of the support roller on the frame in the closed position cover, and taking into account a size of the chassis may be reduced, to allow an implementation of the cover and its mobility on any thermal printing mechanism, for the lowest possible cost. It is more particularly the object of the present invention to provide a movable mounting device for a cover on the frame of a thermal printing mechanism, allowing locking of its holding in the closed position and easy maneuvering in position d 'opening. The arrangement of such a device is sought so as to reconcile the ease of maneuvering the lid between its open and closed positions, and a firm hold of the lid in the closed position which prohibits any unwanted maneuver of the to its open position. This device is also searched for a simple structure and space as small as possible, to not increase its size and therefore allow its implementation on any thermal printing mechanism. The invention also relates to a thermal printing mechanism equipped with such a mounting device.
Le dispositif de la présente invention est un dispositif de montage d'un couvercle monté mobile entre une position d'ouverture et une position de fermeture sur le châssis d'un mécanisme d'impression thermique. Ce montage mobile du couvercle est préférentiellement un montage en basculement du couvercle sur le châssis. Cependant, il est envisageable sans déroger aux règles de la présente invention de monter de manière analogue le couvercle en mobilité sur le châssis suivant d'autres types de mouvements, tel qu'un mouvement de translation, un mouvement combinant basculement et translation, voire un montage amovible du couvercle sur le châssis permettant à l'utilisateur de les dissocier ou alternativement de les assembler. La mobilité du couvercle par rapport au châssis autorise un dégagement ou alternativement une couverture d'un compartiment de réception d'un rouleau de bande à imprimer et une tête d'impression que comporte le mécanisme. Cette mobilité du couvercle permet aussi, en position de fermeture, de plaquer un rouleau d'appui dont il est porteur en appui élastique contre la tête d'impression, notamment en réaction d'une poussée inverse exercée par des moyens élastiques que comporte le mécanisme et qui sont affectés à la tête d'impression. Selon la configuration du mécanisme et ses conditions d'implantation sur site, telle qu'une configuration du mécanisme pour son installation en kiosque ou en mécanisme de table, le couvercle est susceptible d'être réduit à un organe porteur du rouleau d'appui, et est accessoirement complété par un capot sur lequel est monté cet organe porteur. Pour sa mobilité, le couvercle est susceptible d'être monté mobile sur le châssis par l'intermédiaire de l'organe porteur, voire le cas échéant par l'intermédiaire du capot. On comprendra donc par couvercle un organe susceptible d'être simplement constitué par l'organe porteur du rouleau d'appui ou par cet organe porteur adjoint à un capot de fermeture du mécanisme. Plus particulièrement, ce dispositif de montage comprend :The device of the present invention is a device for mounting a lid mounted movably between an open position and a closed position on the frame of a thermal printing mechanism. This mobile assembly of the cover is preferably a mounting tilt cover on the chassis. However, it is conceivable without departing from the rules of the present invention to similarly mount the mobile cover on the frame according to other types of movements, such as a translational movement, a combined movement tilting and translation, or even a removable mounting of the cover on the frame allowing the user to disassociate or alternatively to assemble. The mobility of the cover relative to the frame allows a clearance or alternatively a cover of a receiving compartment of a printing tape roll and a print head that includes the mechanism. This mobility of the cover also makes it possible, in the closed position, to press a support roller which bears elastically against the printing head, in particular in response to a reverse thrust exerted by elastic means which the mechanism comprises. and which are assigned to the print head. Depending on the configuration of the mechanism and its conditions of implantation on site, such as a configuration of the mechanism for its installation in kiosk or table mechanism, the cover is likely to be reduced to a bearing member of the support roller, and is incidentally completed by a hood on which is mounted this carrier member. For its mobility, the cover can be mounted movably on the frame via the carrier member, or possibly by means of the cover. Thus, by cover, there will be understood a member that can simply be constituted by the support member of the support roller or by this supporting member associated with a closing cap of the mechanism. More particularly, this mounting device comprises:
*) un rouleau d'appui monté rotatif sur le couvercle par l'intermédiaire de son axe, ledit axe étant logé à l'intérieur de premières lumières allongées que comporte le couvercle. La conformation allongée de ces premières lumières est à comprendre en ce qu'elle leur confère une aptitude à autoriser des mouvements de rotation et de translation du rouleau d'appui par rapport au couvercle. Ces dispositions sont telles que le rouleau d'appui est guidé en mobilité sur le couvercle non seulement en rotation, mais aussi en translation à partir d'une circulation de son axe le long des premières lumières. D'une manière générale, la liberté de mouvement du rouleau d'appui par rapport au couvercle, et plus particulièrement la conformation des premières lumières, sont agencées pour guider le rouleau d'appui en prise sur le châssis lorsque le couvercle est déplacé vers sa position de fermeture. Ces premières lumières sont ménagées latéralement en vis-à-vis sur le couvercle, et sont de conformation correspondante pour permettre un tel guidage du rouleau d'appui sur le couvercle. *) des deuxièmes lumières qui sont ménagées dans le châssis pour la réception de l'axe du rouleau d'appui. Ces deuxièmes lumières sont ouvertes pour l'introduction de l'axe et comportent un logement borgne pour recevoir l'axe en leur fond en position de fermeture du couvercle. Ces deuxièmes lumières comportent notamment une partie amont qui est ouverte pour autoriser une introduction de l'axe, et une partie aval qui est borgne pour le blocage de l'axe en fond des deuxièmes lumières sous l'effet d'une poussée exercée par des moyens élastiques. Les parties amont et aval sont à considérer dans le sens de mobilité du couvercle vers sa position de fermeture, et sont susceptibles d'être orientées en dièdre l'une par rapport à l'autre. Les deuxièmes lumières sont ménagées latéralement en vis-à-vis sur le châssis, et sont de conformation correspondante pour le guidage du rouleau d'appui sur le châssis. * ) a support roller rotatably mounted on the cover via its axis, said axis being housed inside first elongate slots that includes the cover. The elongated conformation of these first lights is to be understood in that it gives them an ability to allow movements of rotation and translation of the support roller relative to the cover. These arrangements are such that the support roller is guided in mobility on the lid not only in rotation, but also in translation from a movement of its axis along the first lights. In general, the freedom of movement of the backing roller with respect to the cover, and more particularly the conformation of the first lumens, are arranged to guide the support roller engaged on the chassis when the cover is moved towards its position. closing position. These first lights are formed laterally vis-à-vis the cover, and are of corresponding conformation to allow such guidance of the support roller on the cover. *) second lights which are formed in the frame for receiving the axis of the support roller. These second lights are open for the introduction of the axis and comprise a blind housing for receiving the axis at their bottom in the closed position of the lid. These second lights comprise in particular an upstream portion which is open to allow introduction of the axis, and a downstream portion which is blind for blocking the axis at the bottom of the second lights under the effect of a thrust exerted by elastic means. The upstream and downstream parts are to be considered in the direction of mobility of the cover towards its closed position, and are likely to be oriented dihedral relative to each other. The second lights are formed laterally vis-à-vis the frame, and are of corresponding conformation for guiding the support roller on the frame.
Ladite correspondance de conformation entre les lumières est réalisée selon les dimensions et conformations propres aux extrémités de l'axe qu'elles reçoivent respectivement. Selon une forme simple de réalisation, cette correspondance est une conformation semblable des lumières entre elles, identiques voire homothétiques. *) des moyens élastiques prenant appui contre le châssis pour exercer une poussée contre le rouleau d'appui et maintenir son axe en fond des logements en position de fermeture du couvercle.Said conformation correspondence between the lights is made according to the dimensions and conformations specific to the ends of the axis that they respectively receive. According to a simple embodiment, this correspondence is a similar conformation of the lights between them, identical or even homothetic. *) elastic means bearing against the frame to exert a thrust against the support roller and maintain its axis at the bottom of the housing in the closed position of the lid.
La manœuvre du rouleau d'appui conjointement le long des premières et deuxièmes lumières est provoquée à partir d'une combinaison associant le déplacement du couvercle entre ses positions d'ouverture et de fermeture, la poussée exercée par les moyens élastiques vers le rouleau d'appui, et les appuis antagonistes que prend l'axe respectivement contre le couvercle et contre le châssis par l'intermédiaire des lumières que ces derniers comportent respectivement. Ces dispositions sont telles que le couvercle est maintenu élastiquement en position de fermeture à partir de la poussée exercée par les moyens élastiques contre l'axe et sa prise d'appui élastique contre le couvercle et le châssis.The operation of the support roller jointly along the first and second lights is caused from a combination associating the displacement of the lid between its open and closed positions, the thrust exerted by the elastic means towards the roller of support, and antagonistic support that takes the axis respectively against the cover and against the frame through the lights that they respectively comprise. These arrangements are such that the cover is held elastically in the position of closing from the thrust exerted by the resilient means against the axis and its resilient bearing against the cover and the frame.
Selon la forme préférée de réalisation selon laquelle le couvercle est monté mobile en basculement sur le châssis, le basculement du couvercle vers sa position de fermeture est de préférence réalisé simplement à partir d'un geste de poussée appliquée par l'utilisateur au moins contre le couvercle pour le rabattre vers le châssis.According to the preferred embodiment according to which the lid is mounted movably tilting on the frame, the tilting of the lid towards its closed position is preferably carried out simply by means of a pushing gesture applied by the user at least against the cover to fold it down to the frame.
Selon la présente invention, un tel dispositif de montage en mobilité du couvercle sur le châssis est principalement reconnaissable en ce que les deuxièmes lumières sont ménagées fixes dans le châssis, et en ce qu'il comprend des moyens de verrouillage du maintien élastique de l'axe en fond du logement. Ces moyens de verrouillage sont constitués par la coopération des appuis antagonistes que prend l'axe contre respectivement le logement et les premières lumières en position de fermeture du couvercle. Ces appuis antagonistes constituent des moyens de retenue du couvercle à rencontre de son déplacement vers sa position d'ouverture, en l'absence d'une échappée préalable de l'axe hors du logement.According to the present invention, such a device for mounting the lid on the chassis in mobility is mainly recognizable in that the second lights are arranged fixed in the frame, and in that it comprises means for locking the elastic support of the frame. axis at the bottom of the housing. These locking means are constituted by the cooperation of the opposing supports that the axis takes respectively against the housing and the first lights in the closed position of the lid. These antagonistic supports constitute means of retaining the cover against its movement towards its open position, in the absence of a prior escape from the axis outside the housing.
De tels moyens de retenue constituent des moyens d'emboîtement irréversible du couvercle sur le châssis, sinon à extraire l'axe hors des logements à partir d'un mouvement spécifique duquel est exclue une mobilité du couvercle vers sa position d'ouverture. L'irréversibilité de cet emboîtement est de préférence stricte, voire au moins constitue un obstacle à une manœuvre du couvercle vers sa position d'ouverture en l'absence d'une extraction spécifique de l'axe hors du logement. Cet obstacle est opposé à une manœuvre du couvercle vers sa position d'ouverture, et constitue tout au moins une gêne dissuasive et/ou inconfortable pour l'utilisateur lorsqu'il manœuvre le couvercle vers sa position d'ouverture. Idéalement, les moyens de retenue constituent des moyens aptes à interdire strictement un déplacement du couvercle vers sa position d'ouverture en l'absence d'une échappée préalable de l'axe hors du logement opérée par l'utilisateur.Such retaining means constitute irreversible engagement means of the cover on the frame, otherwise to extract the axis out of the housing from a specific movement which is excluded a mobility of the lid to its open position. The irreversibility of this interlocking is preferably strict, or at least constitutes an obstacle to maneuvering the cover towards its open position in the absence of a specific extraction of the axis out of the housing. This obstacle is opposed to a maneuvering of the lid towards its open position, and is at least a disincentive and / or uncomfortable discomfort for the user when maneuvering the lid to its open position. Ideally, the retaining means are means able to strictly prohibit a displacement of the cover towards its open position in the absence of a prior escape from the axis out of the housing operated by the user.
En position de fermeture du couvercle, la prise d'appui de l'axe conjointement contre le châssis et contre le couvercle, notamment par l'intermédiaire des premières et deuxièmes lumières qui le logent, constitue des moyens de butée aptes à faire obstacle et de préférence à interdire rigoureusement une mobilité du couvercle vers sa position d'ouverture. L'autorisation de cette mobilité est soumise à la condition d'un déplacement préalable de l'axe hors du logement.In the closed position of the cover, the bearing of the axis jointly against the frame and against the cover, in particular by means of the first and second lights which house it, constitutes stop means capable of obstructing and preferably to strictly prohibit a mobility of the cover towards its open position. The authorization of this mobility is subject to the condition of a prior displacement of the axis out of the housing.
L'invention concerne également un dispositif de montage d'un couvercle monté mobile entre une position d'ouverture et une position de fermeture sur un châssis d'un mécanisme d'impression thermique, ce dispositif comprenant : un rouleau d'appui monté rotatif sur le couvercle par l'intermédiaire de son axe, ledit axe étant logé à l'intérieur de premières lumières allongées que comporte le couvercle ; des deuxièmes lumières ménagées dans le châssis pour la réception de l'axe du rouleau d'appui, ces deuxièmes lumières étant ouvertes pour l'introduction de l'axe et comportant un logement borgne pour recevoir l'axe en leur fond en position de fermeture du couvercle; des moyens élastiques prenant appui contre le châssis pour exercer une poussée contre le rouleau d'appui et maintenir son axe en fond des logements en position de fermeture du couvercle ; dans lequel les deuxièmes lumières sont ménagées fixes dans le châssis, et comprenant des moyens de verrouillage du maintien élastique de l'axe en fond du logement, ces moyens de verrouillage étant constitués par la coopération des appuis antagonistes que prend l'axe contre respectivement le logement et les premières lumières en position de fermeture du couvercle, ces appuis antagonistes constituant des moyens de retenue du couvercle à rencontre de son déplacement vers sa position d'ouverture en l'absence d'une échappée préalable de l'axe hors du logement, et comporte en outre un organe de déverrouillage spécifique entraînant par poussée l'échappée de l'axe hors du logement afin de permettre l'ouverture dudit couvercle. De préférence la poussée de déverrouillage s'effectue sur l'axe du rouleau d'appui ou, de manière équivalente, sur la gomme du rouleau d'appui. La mise en œuvre des moyens de butée induit une interdiction rigoureuse, sinon tout au moins un obstacle voire une gêne, à une mobilité du couvercle vers sa position d'ouverture, qui ne peut être rompue qu'à partir d'un déplacement de l'axe hors du logement. Le dispositif de montage intègre des moyens de retenue aptes à imposer une succession de deux mouvements distincts pour autoriser une mobilité du couvercle depuis sa position de fermeture vers sa position d'ouverture. Ces deux mouvements successifs correspondent respectivement à un premier mouvement d'extraction de l'axe hors du logement pour déverrouiller le maintien du couvercle en position de fermeture, suivi du mouvement en mobilité du couvercle vers sa position d'ouverture, autorisé à partir de l'extraction de l'axe hors du logement qui libère le couvercle de sa liaison avec le châssis.The invention also relates to a device for mounting a lid mounted movably between an open position and a closed position on a chassis of a thermal printing mechanism, this device comprising: a support roller mounted to rotate on the cover via its axis, said axis being housed inside first elongate slots that includes the cover; second lights provided in the frame for receiving the axis of the support roller, these second lights being open for the introduction of the axis and comprising a blind housing for receiving the axis at their bottom in the closed position of the lid; elastic means bearing against the frame to exert a thrust against the support roller and maintain its axis at the bottom of the housing in the closed position of the lid; in which the second lights are arranged fixed in the frame, and comprising means for locking the elastic retention of the axis at the bottom of the housing, these locking means being constituted by the cooperation of the counterforce supports that the axis takes respectively against the housing and the first lights in the closed position of the cover, these antagonistic supports constituting means for retaining the cover against its movement towards its open position in the absence of a prior escape from the axis out of the housing, and further comprises a specific unlocking member pushing the escapement of the shaft out of the housing to allow the opening of said cover. Preferably, the unlocking thrust is effected on the axis of the support roller or, in an equivalent manner, on the rubber of the support roller. The implementation of the abutment means induces a rigorous prohibition, if not at least an obstacle or even an inconvenience, to a mobility of the cover towards its open position, which can only be broken when a movement of the axis out of housing. The mounting device incorporates retaining means adapted to impose a succession of two distinct movements to allow a mobility of the lid from its closed position to its open position. These two successive movements respectively correspond to a first extraction movement of the axis out of the housing to unlock the holding of the cover in the closed position, followed by the movement of the cover in its movable position to its opening position, authorized from the extraction of the shaft out of the housing which releases the cover of its connection with the frame.
Ces dispositions sont telles que malgré le caractère fixe par rapport au châssis des deuxièmes lumières, permettant de simplifier la structure du dispositif et d'améliorer le confort de manœuvre du couvercle, l'association entre les premières lumières et les deuxièmes lumières constitue un loquet permettant d'emprisonner l'axe pour verrouiller le maintien du couvercle en position de fermeture, sa mobilité étant interdite quels que soient les efforts, de traction notamment, susceptibles d'être exercés sur le couvercle pour provoquer sa mobilité vers sa position d'ouverture. Le déverrouillage du maintien du couvercle en position de fermeture est obtenu à partir d'un déplacement de l'axe hors du logement préalablement à toute mobilité du couvercle par rapport au châssis, vers sa position d'ouverture notamment.These provisions are such that despite the fixed nature with respect to the chassis of the second lights, to simplify the structure of the device and to improve the comfort of maneuvering the cover, the association between the first lights and the second lights is a latch allowing to imprison the axis to lock the holding of the lid in the closed position, its mobility being prohibited regardless of the particular traction forces, may be exerted on the cover to cause its mobility to its open position. Unlocking the holding of the cover in the closed position is obtained from a movement of the axis out of the housing prior to any mobility of the cover relative to the frame, to its open position in particular.
Les moyens de montage sont organisés en moyens de maintien du couvercle en position de fermeture par l'intermédiaire du piégeage de l'axe conjointement à l'intérieur des premières et deuxièmes lumières, et en moyens de verrouillage de ce piégeage. Ce piégeage est obtenu à partir des appuis que prend l'axe conjointement à l'intérieur des premières et deuxièmes lumières, ce qui permet de simplifier les gestes que doit accomplir l'utilisateur pour manœuvrer le couvercle vers sa position d'ouverture.The mounting means are organized as holding means of the lid in the closed position by means of the trapping of the axis jointly inside the first and second lights, and locking means of this trapping. This trapping is obtained from the supports that take the axis jointly inside. first and second lights, which simplifies the actions that the user must perform to maneuver the lid to its open position.
Les appuis antagonistes constituant les moyens de retenue induisent plus particulièrement des efforts de réaction à rencontre d'un déplacement du couvercle depuis sa position de fermeture vers sa position d'ouverture, qui tendent au moins à maintenir l'axe dans une position stable à l'intérieur des premières lumières et des deuxièmes lumières, sinon à induire un effort de repoussée de l'axe en fond des logements en complément des efforts de poussée exercés par les moyens élastiques. Selon ces dispositions et en position de fermeture du couvercle, l'orientation et/ou les positions relatives entre les premières lumières et les logements correspondent à une prise d'appui contre eux de l'axe qui génère, en réaction à un effort appliqué sur le couvercle pour son passage vers sa position d'ouverture, tout au moins un effort de réaction neutre orienté sensiblement parallèlement audit effort appliqué, sinon un effort de réaction comprenant une composante provoquant une repoussée de l'axe vers le fond du logement et accessoirement des premières lumières.The antagonistic supports constituting the retaining means more particularly induce reaction forces against a movement of the cover from its closed position to its open position, which tend at least to maintain the axis in a stable position at the same time. interior of the first lights and second lights, otherwise to induce a repulsion force of the axis in the bottom of the housing in addition to the thrust forces exerted by the elastic means. According to these arrangements and in the closed position of the cover, the orientation and / or the relative positions between the first lights and the housings correspond to a bearing against them of the axis which generates, in response to a force applied on the cover for its passage to its open position, at least a neutral reaction force oriented substantially parallel to said applied force, otherwise a reaction force comprising a component causing a repulsion of the axis towards the bottom of the housing and incidentally first lights.
La prise d'appui antagoniste correspond notamment à un premier point d'appui de l'axe contre la deuxième lumière et à un deuxième point d'appui de l'axe contre la première lumière qui sont alignés suivant une génératrice de l'axe. Cette prise d'appui antagoniste forme les moyens de retenue aptes non seulement à maintenir le couvercle en position de fermeture, mais aussi à verrouiller ce maintien à rencontre d'un mouvement de mobilité du couvercle vers sa position d'ouverture en l'absence d'une extraction de l'axe hors du logement.The counteracting bearing corresponds in particular to a first point of support of the axis against the second light and a second point of support of the axis against the first light which are aligned along a generatrix of the axis. This antagonistic support formation forms retaining means able not only to maintain the lid in the closed position, but also to lock this holding against a movement of movement of the lid towards its open position in the absence of an extraction of the axis out of the housing.
Plus particulièrement, les moyens de retenue sont constitués par au moins un couple d'appuis antagonistes que prend l'axe contre respectivement le logement et les premières lumières en position de fermeture du couvercle, ces appuis antagonistes étant alignés suivant une génératrice de l'axe. Ces dispositions induisent un alignement radial des réactions de prise d'appui de l'axe conjointement sur le châssis et sur le couvercle en position de fermeture de ce dernier, à rencontre de son échappée hors du logement sous l'effet d'une manœuvre en mobilité du couvercle vers sa position d'ouverture.More particularly, the retaining means consist of at least one pair of opposing supports that the axis takes respectively against the housing and the first lights in the closed position of the cover, these opposing supports being aligned along a generatrix of the axis. . These provisions induce a radial alignment of the support bearing reactions of the axis jointly on the frame and on the cover in the closed position of the latter, in comparison with its escape from the housing under the effect of a maneuver in movement of the cover towards its open position.
L'axe est susceptible d'être déplacé hors du logement à partir d'une préhension directe par l'utilisateur. Cette préhension directe constitue un geste unique que l'utilisateur doit fournir pour déplacer le couvercle en position d'ouverture dans le cas avantageux où ladite rampe est exploitée pour provoquer une mobilité spontanée du couvercle vers sa position d'ouverture. Cependant, il est préféré de pourvoir le dispositif d'un organe de poussée de l'axe hors du logement. Cet organe de poussée est manœuvrable par l'utilisateur pour provoquer le déverrouillage du couvercle en position de fermeture et autoriser sa mobilité vers sa position d'ouverture. Cet organe de poussée est monté mobile indifféremment sur le châssis ou sur le couvercle et est manœuvrable entre une position neutre de verrouillage dans laquelle l'axe est maintenu en fond des deuxièmes lumières sous l'effet de poussée exercée par les moyens élastiques, et une position active de déverrouillage dans laquelle il prend appui contre l'axe jusqu'à son extraction hors du logement à rencontre de la poussée antagoniste exercée par les moyens élastiques. Plus particulièrement, le dispositif comprend un organe de poussée de l'axe hors du logement à rencontre de la poussée antagoniste exercée par les moyens élastiques en position de fermeture du couvercle, cet organe de poussée étant manœuvrable par l'utilisateur pour autoriser une mobilité du couvercle vers sa position d'ouverture.The axis is likely to be moved out of the housing from a direct grip by the user. This direct grip is a unique gesture that the user must provide to move the lid in the open position in the advantageous case where said ramp is used to cause a spontaneous movement of the lid to its open position. However, it is preferred to provide the device with a thrust member of the shaft out of the housing. This thrust member is maneuverable by the user to cause the unlocking of the cover in the closed position and allow its mobility to its open position. This thrust member is movably mounted indifferently on the frame or on the cover and is operable between a neutral locking position in which the axis is maintained at the bottom of the second lights under the thrust effect exerted by the elastic means, and an active unlocking position in which it bears against the axis until it is extracted from the housing against the antagonistic thrust exerted by the means elastic. More particularly, the device comprises a thrust member of the shaft out of the housing against the thrust exerted by the resilient means in the closed position of the lid, the thrust member being operable by the user to allow a mobility of the cover towards its open position.
L'organe de poussée est avantageusement constitué par au moins un doigt de poussée ménagé sur un levier qui est indifféremment monté pivotant sur le châssis ou sur le couvercle. L'agencement de l'organe de poussée en levier offre une ergonomie satisfaisante pour provoquer l'ouverture du couvercle à partir d'un geste simple effectué par l'utilisateur sur l'extrémité correspondante du levier.The thrust member is advantageously constituted by at least one thrust finger provided on a lever which is indifferently pivotally mounted on the frame or on the cover. The arrangement of the thrust member lever provides satisfactory ergonomics to cause the opening of the lid from a simple gesture made by the user on the corresponding end of the lever.
Le levier est de préférence articulé sur le couvercle et est agencé en un couple de platines latérales disposées à un côté respectif du couvercle. Ces platines sont chacune articulées en pivotement sur le couvercle et sont munies d'un doigt de poussée de l'extrémité correspondante de l'axe. Un organe de manœuvre du levier par l'utilisateur relie longitudinalement les platines l'une à l'autre pour provoquer leur pivotement conjoint. Ces dispositions permettent d'offrir à l'utilisateur des moyens facilement accessibles pour provoquer aisément l'extraction des extrémités de l'axe hors de leurs logements, sans que ces moyens ne constituent une gêne pour le chargement rapide et aisé d'un rouleau de bande à l'intérieur du mécanisme. Plus particulièrement, l'agencement de l'organe de poussée en platines articulées latéralement sur le châssis et reliées par un organe longitudinal commun de manœuvre permet d'éviter un encombrement de la zone du châssis recevant la tête d'impression thermique pour faciliter l'installation de l'extrémité de la bande nouvellement chargée. En outre, la manœuvre du levier en position de fermeture du couvercle est apte à être effectuée à partir du geste de poussée qu'effectue l'utilisateur sur le couvercle pour le déplacer vers sa position de fermeture. Il en ressort qu'à partir d'un geste unique de poussée sur le couvercle, le couvercle est placé en position de fermeture, est maintenu en cette position, et ce maintien est verrouillé. Inversement, à partir d'un geste unique de manœuvre du levier, le déverrouillage du maintien du couvercle est opéré et celui-ci est déplacé vers sa position d'ouverture. Accessoirement, l'organe de poussée est associé à un organe d'accompagnement de la mobilité du couvercle vers sa position d'ouverture. Plus particulièrement, cet organe d'accompagnement est susceptible d'être lié à l'organe de poussée pour, lors du déverrouillage du maintien du couvercle en position de fermeture, exercer une repoussée sur le couvercle vers sa position d'ouverture au moins à l'échappée de l'axe hors des deuxièmes lumières, sinon dès l'extraction de l'axe hors du logement. Cette liaison est susceptible d'être une liaison en mobilité autorisant une manœuvre indépendante de l'organe d'accompagnement par rapport à l'organe de poussée. Cependant, il est avantageux d'exploiter l'organisation de l'organe de poussée en bras de levier, pour munir ce dernier de l'organe d'accompagnement. Par exemple, l'organe d'accompagnement est ménagé sur le levier en étant orienté, suivant le plan général de mobilité du couvercle, en basculement notamment, avec un décalage angulaire par rapport à l'orientation du ou des doigts de poussée. Ce décalage angulaire correspond notamment à la distance que doit parcourir le ou les doigts de poussée pour extraire l'axe hors du logement, préalablement à la prise d'appui de l'organe d'accompagnement contre le couvercle pour le manœuvrer vers sa position d'ouverture. Dans ce cas, le bras de levier prend appui sur le châssis pour permettre la mise en œuvre de l'organe d'accompagnement.The lever is preferably hinged to the lid and is arranged in a pair of side plates disposed at a respective side of the lid. These plates are each pivotally articulated on the cover and are provided with a thrust finger of the corresponding end of the axis. An actuator lever member by the user longitudinally connects the plates to one another to cause their joint pivoting. These arrangements make it possible to offer the user easily accessible means for easily provoking the extraction of the ends of the shaft out of their housing, without these means being a hindrance for the quick and easy loading of a roll of band inside the mechanism. More particularly, the arrangement of the thrust member in plates articulated laterally on the frame and connected by a common longitudinal operating member avoids a bulk of the area of the frame receiving the thermal print head to facilitate the installing the end of the newly loaded tape. In addition, the operation of the lever in the closed position of the lid is adapted to be performed from the pushing gesture that the user makes on the lid to move it to its closed position. It follows that, from a single pushing action on the lid, the lid is placed in the closed position, is held in this position, and this holding is locked. Conversely, from a single gesture of maneuvering the lever, the unlocking of the cover is maintained and it is moved to its open position. Incidentally, the thrust member is associated with an accompanying member of the mobility of the cover towards its open position. More particularly, this support member is capable of being connected to the thrust member for, when unlocking the holding of the lid in the closed position, pushing back on the lid towards its open position at least 1 escape from the axis out of the second lights, if not from the extraction of the axis out of the housing. This connection is likely to be a mobility link allowing a maneuver independent of the support member with respect to the thrust member. However, it is advantageous to use the organization of the thrust member lever arm, to provide the latter of the accompanying body. For example, the support member is provided on the lever being oriented, in the general plane of mobility of the cover, in particular rocking, with an angular offset relative to the orientation of the thrust fingers. This angular offset corresponds in particular to the distance that must traverse the pushing finger or fingers to extract the axis from the housing, prior to the support of the support member against the cover to maneuver to its position d 'opening. In this case, the lever arm is supported on the frame to allow the implementation of the accompanying member.
Il est proposé d'exploiter une rampe de guidage de l'axe pour provoquer spontanément la manœuvre du couvercle vers sa position d'ouverture après l'extraction de l'axe hors du logement effectuée par l'utilisateur. Cette rampe de guidage est avantageusement celle utilisée pour placer sous contrainte les moyens élastiques préalablement à leur libération destinée à repousser l'axe en fond du logement. L'organisation des moyens de maintien du couvercle en position de fermeture étant confondue avec l'organisation des moyens de retenue, la structure du dispositif de montage peut être simplement organisée pour autoriser une manœuvre du couvercle vers sa position d'ouverture à partir d'un geste unique de l'utilisateur d'extraction de l'axe hors du logement. Suite à ce geste, les moyens élastiques sont exploités, ces moyens élastiques étant aptes non seulement à repousser l'axe en fond du logement, mais aussi aptes à provoquer la mobilité du couvercle, en basculement notamment, vers sa position d'ouverture après extraction de l'axe hors du logement. Il en ressort d'une manière générale une simplification de la structure du dispositif de montage et une aisance de manœuvre du couvercle vers sa position d'ouverture, sans affecter la qualité de son verrouillage en position de fermeture.It is proposed to operate a guide ramp of the axis to spontaneously cause the maneuvering of the cover to its open position after extraction of the axis out of the housing made by the user. This guide ramp is advantageously that used to place under stress the elastic means prior to their release to repel the axis at the bottom of the housing. Since the organization of the means for holding the lid in the closed position coincides with the organization of the retaining means, the structure of the mounting device can be simply organized to allow a maneuvering of the lid towards its open position from a unique gesture of the user extracting the shaft out of the housing. Following this action, the elastic means are used, these elastic means being able not only to push the axis at the bottom of the housing, but also able to cause the mobility of the lid, in particular tilting, to its open position after extraction of the axis out of the housing. It generally results in a simplification of the structure of the mounting device and ease of operation of the cover towards its open position, without affecting the quality of its locking in the closed position.
Plus particulièrement, les deuxièmes lumières sont avantageusement du type comportant en amont du logement une rampe de guidage de l'axe à rencontre d'une mise sous contrainte et/ou d'une libération progressive des moyens élastiques, provoquée par une manœuvre du couvercle respectivement à la fermeture et à l'ouverture. La rampe de guidage est notamment formée par le bord d'un dégagement largement ouvert que comportent les deuxièmes lumières pour permettre une introduction aisée de l'axe. La position amont de la rampe est à considérer au regard du sens de mobilité du couvercle vers sa position de fermeture.More particularly, the second lights are advantageously of the type comprising, upstream of the housing, a ramp for guiding the axis against a stressing and / or a progressive release of the elastic means, caused by a maneuver of the lid respectively. at closing and opening. The guide ramp is formed by the edge of a largely open clearance that includes the second lights to allow easy introduction of the axis. The upstream position of the ramp is to be considered with regard to the direction of mobility of the cover towards its closed position.
L'organisation proposée des moyens de retenue dissocie le maintien du couvercle en position de fermeture et le verrouillage positif de son maintien indépendamment de l'organisation propre des moyens élastiques. Ces dispositions permettent d'organiser les moyens élastiques constitutifs des moyens de maintien du couvercle en position de fermeture, indépendamment des moyens de retenue aptes à verrouiller ce maintien. Ces dispositions sont telles que les moyens élastiques sont susceptibles d'être indifféremment des moyens élastiques spécifiques ou des moyens élastiques attachés à la mise en œuvre d'un autre organe du mécanisme, tête d'impression thermique notamment. L'organisation proposée des moyens de retenue permet d'éviter de complexifier la structure du dispositif pour l'installation des moyens élastiques, ceux-ci ne participant pas du verrouillage positif du maintien du couvercle en position de fermeture. Une telle simplification de structure permet de limiter l'encombrement et les coûts d'obtention du dispositif, et de permettre son implantation aisée sur un quelconque mécanisme d'impression, y compris sur un mécanisme de petite taille.The proposed organization of the retaining means disassociates the holding of the lid in the closed position and the positive locking of its holding independently of the own organization of the elastic means. These arrangements make it possible to organize the elastic means constituting the means for maintaining the lid in the closed position, independently of the retaining means capable of locking this holding. These arrangements are such that the elastic means are likely to be indifferently specific elastic means or elastic means attached to the implementation of another mechanism member, including thermal printing head. The proposed organization of the retaining means makes it possible to avoid complicating the structure of the device for the installation of the elastic means, these not participating in the positive locking of the holding of the lid in the closed position. Such a simplification of structure makes it possible to limit the size and the costs of obtaining the device, and to allow its easy implementation on any printing mechanism, including on a small mechanism.
A cet effet et selon une forme préférée de réalisation, les moyens élastiques sont confondus avec ceux dont est munie une tête d'impression thermique équipant le mécanisme pour son placage vers le rouleau d'appui. L'invention a aussi pour objet un mécanisme d'impression thermique dans lequel est intégré un dispositif de montage tel qu'il vient d'être décrit.For this purpose and according to a preferred embodiment, the elastic means are coincident with those of which is provided with a thermal printing head equipping the mechanism for its plating to the support roller. The invention also relates to a thermal printing mechanism in which is integrated a mounting device as just described.
La présente invention sera mieux comprise à la lecture de la description qui va en être faite d'un exemple préféré de réalisation, en relation avec les figures des planches annexées, dans lesquelles : Les fig.1 à fig.4 sont des schémas de profil représentant un dispositif de montage d'un couvercle monté sur le châssis d'un mécanisme d'impression thermique selon les dispositions prévues par la présente invention, qui illustrent successivement les modalités de mobilité de ce couvercle. Les fig.5 à fig.8 sont des représentations du dispositif schématisé sur les fig.1 à fig.4, qui illustrent en perspective les modalités de mobilité du couvercle respectivement représentées sur ces figures.The present invention will be better understood on reading the description which will be given of a preferred embodiment, in connection with the figures of the attached plates, in which: Fig.1 to fig.4 are profile diagrams representing a device for mounting a cover mounted on the frame of a thermal printing mechanism according to the arrangements provided by the present invention, which successively illustrate the mobility of this cover. The fig.5 to fig.8 are representations of the device shown schematically in Fig.1 to Fig.4, which illustrate in perspective the mobility of the cover respectively shown in these figures.
Sur les figures, un mécanisme d'impression thermique comprend un châssis 1 logeant une tête d'impression thermique 2 destinée à imprimer un support d'impression conditionné en bande. Un couvercle 3 est monté mobile sur le châssis 1 , tel qu'en basculement ou analogue, entre une position d'ouverture représentée sur les fig.4 et fig.8, et une position de fermeture représentée sur les fig.2 et fig.6. Ce couvercle 3 est porteur d'un rouleau d'appui 4, destiné à maintenir la bande plaquée contre la tête d'impression 2 en position de fermeture du couvercle 3. Ce plaquage résulte d'une poussée R exercée par la tête d'impression 2 vers le rouleau d'appui, par l'intermédiaire de moyens élastiques 5 qui sont affectés à la tête d'impression 2 et qui sont en prise sur le châssis 1 .In the figures, a thermal printing mechanism comprises a frame 1 housing a thermal printing head 2 intended to print a band-conditioned printing medium. A lid 3 is movably mounted on the frame 1, such as tilting or the like, between an open position shown in Fig.4 and Fig.8, and a closed position shown in Fig.2 and Figs. 6. This cover 3 carries a support roll 4, intended to hold the band pressed against the print head 2 in the closed position of the lid 3. This plating results from a thrust R exerted by the print head 2 to the support roller, via elastic means 5 which are assigned to the print head 2 and which are engaged on the frame 1.
Le rouleau d'appui 4 est porté par le couvercle 3 par l'intermédiaire de son axe 6. A cet effet, le couvercle 3 comporte des premières lumières 7 allongées pour la réception des extrémités de l'axe 6. Ces premières lumières 7 autorisent une mobilité du rouleau d'appui 4 en rotation pour l'entraînement de la bande, et en translation sur le couvercle 3 lors du déplacement de ce dernier entre ses positions d'ouverture et de fermeture. Ce déplacement en translation du rouleau d'appui 4 permet une circulation de l'axe 6 le long de deuxièmes lumières 8 ménagées fixes sur le châssis 1 . Ces deuxièmes lumières 8 comprennent une partie amont 9 ouverte pour l'introduction de l'axe 6, et une partie aval agencée en logement borgne 10 pour la réception en son fond de l'axe 6 en position de fermeture du couvercle 3. Dans cette position, la prise d'appui antagoniste 13 du rouleau d'appui 4 respectivement contre le couvercle 3 et contre le châssis 1 permet un maintien du couvercle 3 en position de fermeture. Pour verrouiller ce maintien, l'axe 6 est maintenu en fond du logement 10 non seulement à partir de la poussée élastique R exercée par la tête d'impression 2 sur le rouleau d'appui 4, mais aussi à partir d'un agencement des dits points d'appui antagoniste 13 qui interdit une mobilité du couvercle 3 en l'absence d'une extraction préalable de l'axe 6 hors des logements 10 que comportent les deuxièmes lumières 8.The support roller 4 is carried by the cover 3 via its axis 6. For this purpose, the cover 3 comprises first elongated slots 7 for receiving the ends of the axis 6. These first lights 7 allow a mobility of the support roll 4 in rotation for driving the band, and in translation on the lid 3 during the movement of the latter between its open and closed positions. This displacement in translation of the support roller 4 allows a circulation of the axis 6 along second lights 8 formed fixed on the frame 1. These second lights 8 comprise an upstream portion 9 open for the introduction of the axis 6, and a downstream portion arranged in blind housing 10 for the reception at its bottom of the axis 6 in the closed position of the cover 3. In this position, the counteracting bearing 13 of the support roller 4 respectively against the cover 3 and against the frame 1 allows a holding of the lid 3 in the closed position. To lock this maintenance, the axis 6 is maintained at the bottom of the housing 10 not only from the elastic thrust R exerted by the print head 2 on the support roll 4, but also from an arrangement of said antagonistic support points 13 which prohibits a mobility of the cover 3 in the absence of a prior extraction of the axis 6 out of the housings 10 that comprise the second lights 8.
Plus particulièrement, le couvercle 3 est déplacé depuis sa position d'ouverture représentée sur les fig.4 et fig.8, vers une position d'introduction de l'axe 6 à l'intérieur de la partie amont 9 des deuxièmes lumières 8, tel que représentée sur les fig.1 et fig.5. Ce déplacement est provoqué à partir d'un geste de poussée P exercé par l'utilisateur contre la face supérieure du couvercle 3, qui induit une prise d'appui glissant de l'axe 6 contre une rampe de guidage 1 1 ménagée dans la partie amont 9 des deuxièmes lumières 8. Dans cette position d'introduction, le rouleau d'appui 4 exerce une poussée contre la tête d'impression 2, dont l'escamotage élastique autorise le passage de l'axe 6 vers le logement 10. Lorsque l'axe 6 franchit la zone intermédiaire 12 des deuxièmes lumières 8 séparant la partie amont 9 du logement 10, celui-ci est spontanément repoussé R en fond des logements 10 pour maintenir le couvercle 3 en position de fermeture, tel que représenté sur les fig.2 et fig.6. Dans cette position de fermeture, le couvercle 3 est emboîté sur le châssis 1 de manière irréversible, sinon à extraire l'axe 6 hors des logements 10 à partir d'un mouvement spécifique duquel est exclue une mobilité du couvercle 3 vers sa position d'ouverture.More particularly, the lid 3 is moved from its open position shown in FIGS. 4 and 8 to an insertion position of the axis 6 inside the upstream portion 9 of the second lumens 8, as shown in fig.1 and fig.5. This displacement is caused by a pushing action P exerted by the user against the upper face of the cover 3, which induces a sliding bearing support of the axis 6 against a guide ramp 1 1 formed in the part upstream 9 second lights 8. In this insertion position, the support roller 4 exerts a push against the print head 2, the elastic retraction allows the passage of the axis 6 to the housing 10. When the axis 6 crosses the intermediate zone 12 of the second lumens 8 separating the upstream portion 9 of the housing 10, the latter is spontaneously pushed R at the bottom of the housing 10 to hold the lid 3 in the closed position, as shown in FIGS. .2 and fig.6. In this closed position, the cover 3 is fitted onto the frame 1 irreversibly, otherwise to extract the axis 6 out of the housings 10 from a specific movement of which is excluded a mobility of the cover 3 towards its position. opening.
Cet emboîtement irréversible est obtenu à partir des positions relatives des premières lumières 7 et des logements 10 qui reçoivent conjointement l'axe 6 de manière à induire, sous l'effet d'un effort S visant à déplacer le couvercle 3 vers sa position d'ouverture, des forces réactionnelles F de l'axe 6 contre le châssis 1 et le couvercle 3 qui font obstacle à un tel déplacement du couvercle 3 vers sa position d'ouverture. Sur l'exemple de réalisation illustré, les orientations générales A respectivement des premières lumières 7 et des logements 10 correspondants sont confondues, de sorte que lesdites forces réactionnelles F sont orientées sensiblement parallèlement au sens général S de déplacement du couvercle 3 vers sa position d'ouverture ou, par analogie, à un effort S visant à un tel déplacement. Ces forces réactionnelles F et effort S sont notamment orientés sensiblement perpendiculairement à l'orientation générale des premières lumières 7 et des logements 10, prises dans la zone correspondante de réception de l'axe 6. Les points d'appui 13 que prend l'axe 6 respectivement contre les premières lumières et contre les logements sont alignés suivant une génératrice de l'axe 6. Selon une forme perfectionnée de réalisation et à partir d'une adaptation de l'orientation correspondante des premières lumières 7 et/ou des logements 10 les uns par rapport aux autres, un effort S appliqué sur le couvercle 3 suivant son sens de déplacement vers sa position d'ouverture, induit en réaction une force F de l'axe 6 sur le couvercle 3 et sur le châssis 1 susceptible de comprendre une composante C apte à provoquer une repoussée de l'axe 6 en fond des logements 10, en complément des efforts R exercés par les moyens élastique 5 sur le rouleau d'appui 4, et en conséquence apte à conforter le verrouillage du maintien du couvercle 3 en position de fermeture.This irreversible engagement is obtained from the relative positions of the first lights 7 and the housings 10 which jointly receive the axis 6 so as to induce, under the effect of a force S to move the lid 3 towards its position. opening, reaction forces F of the axis 6 against the frame 1 and the cover 3 which prevent such a displacement of the cover 3 towards its open position. In the exemplary embodiment illustrated, the general orientations A respectively of the first lumens 7 and the corresponding housings 10 are merged, so that said reaction forces F are oriented substantially parallel to the general direction S of displacement of the cover 3 towards its position. openness or, by analogy, to an effort S aimed at such displacement. These reaction forces F and stress S are in particular oriented substantially perpendicular to the general orientation of the first lights 7 and the housings 10, taken in the corresponding zone of reception of the axis 6. The bearing points 13 that the axis 6 takes respectively respectively against the first lights and against the housings are aligned along a generatrix of the axis 6. According to an improved form of embodiment and to from an adaptation of the corresponding orientation of the first lights 7 and / or housings 10 relative to each other, a force S applied to the lid 3 according to its direction of movement towards its open position, induced reaction a force F of the axis 6 on the cover 3 and on the frame 1 may comprise a component C capable of causing a repulsion of the axis 6 at the bottom of the housing 10, in addition to the forces R exerted by the elastic means 5 on the support roller 4, and accordingly able to reinforce the locking of the holding of the cover 3 in the closed position.
Sur les fig.3 et fig.7, l'axe 6 est en position d'extraction hors du logement 10. Cette extraction est provoquée par l'utilisateur, à partir de la manœuvre d'un levier 14 qui est articulé en pivotement indifféremment sur le châssis 1 , mais préférentiellement sur le couvercle 3 tel qu'illustré. Ce levier 14 est composé d'un couple de platines 15 disposées latéralement sur le couvercle 3 de part et d'autre du rouleau d'appui 4. Ces platines 15 sont chacune munies d'un doigt de poussée 16 de l'axe 6 à rencontre de la poussée R exercée par les moyens élastiques 5 équipant la tête d'impression 2. Ces doigts de poussée 16 sont avantageusement ménagés à partir de la conformation propre des platines 15, ce qui permet de simplifier la structure du dispositif et de favoriser sa réalisation à moindres coûts. Les platines 15 sont reliées entre elles par un organe de manœuvre 17, conformé en tringle ou analogue, qui s'étend parallèlement au rouleau d'appui 4. A partir d'un basculement du levier 14 opéré par l'utilisateur, l'axe 6 est repoussé G hors des logements 10 et l'ouverture du couvercle 3 est autorisée. Lorsque le chargement de bande est effectué, l'utilisateur applique une poussée P conjointement contre le levier 14 et contre la face supérieure du couvercle 3, pour provoquer la mise en position de fermeture du couvercle 3 et le un verrouillage de son maintien dans cette position. In fig.3 and fig.7, the axis 6 is in the extraction position out of the housing 10. This extraction is caused by the user, from the operation of a lever 14 which is pivotally articulated indifferently on the frame 1, but preferably on the lid 3 as illustrated. This lever 14 is composed of a pair of plates 15 arranged laterally on the cover 3 on either side of the support roller 4. These plates 15 are each provided with a thrust pin 16 of the axis 6 to encountering the thrust R exerted by the elastic means 5 equipping the print head 2. These thrust fingers 16 are advantageously formed from the own conformation of the plates 15, which simplifies the structure of the device and to promote its realization at lower costs. The plates 15 are interconnected by an operating member 17, shaped rod or the like, which extends parallel to the support roller 4. From a tilting of the lever 14 operated by the user, the axis 6 is pushed G out of the housing 10 and the opening of the lid 3 is allowed. When the tape loading is performed, the user applies a thrust P jointly against the lever 14 and against the upper face of the cover 3, to cause the closing position of the lid 3 and a locking of its holding in this position .

Claims

REVENDICATIONS
1 .- Dispositif de montage d'un couvercle (3) monté mobile entre une position d'ouverture et une position de fermeture sur un châssis (1 ) d'un mécanisme d'impression thermique, ce dispositif comprenant :1 .- Device for mounting a cover (3) mounted movably between an open position and a closed position on a frame (1) of a thermal printing mechanism, this device comprising:
*) un rouleau d'appui (4) monté rotatif sur le couvercle (3) par l'intermédiaire de son axe (6), ledit axe (6) étant logé à l'intérieur de premières lumières (7) allongées que comporte le couvercle (3), *) des deuxièmes lumières (8) ménagées dans le châssis (1 ) pour la réception de l'axe (6) du rouleau d'appui (4), ces deuxièmes lumières (8) étant ouvertes pour l'introduction de l'axe (6) et comportant un logement borgne (10) pour recevoir l'axe (6) en leur fond en position de fermeture du couvercle (3), * ) a support roller (4) rotatably mounted on the cover (3) via its axis (6), said axis (6) being housed inside first elongated slots (7) that includes the cover (3), *) second lights (8) formed in the frame (1) for receiving the axis (6) of the support roller (4), these second lights (8) being open for the introduction of the shaft (6) and comprising a blind housing (10) for receiving the axis (6) at their bottom in the closed position of the lid (3),
*) des moyens élastiques (5) prenant appui contre le châssis (1 ) pour exercer une poussée contre le rouleau d'appui (4) et maintenir son axe (6) en fond des logements (10) en position de fermeture du couvercle (3), caractérisé en ce que les deuxièmes lumières sont ménagées fixes dans le châssis, et en ce qu'il comprend des moyens de verrouillage du maintien élastique de l'axe (6) en fond du logement (10), ces moyens de verrouillage étant constitués par la coopération des appuis antagonistes (13) que prend l'axe (6) contre respectivement le logement (10) et les premières lumières (7) en position de fermeture du couvercle (3), ces appuis antagonistes (13) constituant des moyens de retenue du couvercle (3) à rencontre de son déplacement vers sa position d'ouverture en l'absence d'une échappée préalable de l'axe (6) hors du logement (10), et en ce qu'il comporte en outre un organe de déverrouillage spécifique entraînant par poussée l'échappée de l'axe hors du logement afin de permettre l'ouverture dudit couvercle. * ) elastic means (5) bearing against the frame (1) to exert a thrust against the support roller (4) and maintain its axis (6) at the bottom of the housing (10) in the closed position of the cover ( 3), characterized in that the second lights are arranged fixed in the frame, and in that it comprises means for locking the elastic retention of the shaft (6) at the bottom of the housing (10), these locking means being constituted by the cooperation of the antagonistic supports (13) that takes the axis (6) respectively against the housing (10) and the first lights (7) in the closed position of the lid (3), these antagonistic supports (13) constituting means for retaining the lid (3) against its displacement towards its open position in the absence of a previous escape from the axis (6) out of the housing (10), and in that it comprises in addition, a specific unlocking member pushing the escapement of the shaft out of the l housing to allow the opening of said lid.
2.- Dispositif de montage selon la revendication 1 , caractérisé en ce que l'organe de déverrouillage est un organe de poussée de l'axe (6) hors du logement (10) à rencontre de la poussée antagoniste exercée par les moyens élastiques (5) en position de fermeture du couvercle (3). 2.- mounting device according to claim 1, characterized in that the unlocking member is a thrust member of the shaft (6) out of the housing (10) against the opposing thrust exerted by the elastic means ( 5) in the closed position of the lid (3).
3.- Dispositif de montage selon la revendication 2, caractérisé en ce que l'organe de poussée est constitué par au moins un doigt de poussée (16) ménagé sur un levier (14) qui est indifféremment monté pivotant sur le châssis (1 ) ou sur le couvercle (3).3. A mounting device according to claim 2, characterized in that the thrust member is constituted by at least one thrust finger (16) formed on a lever (14) which is indifferently pivotally mounted on the frame (1). or on the lid (3).
4.- Dispositif de montage selon la revendication 3, caractérisé en ce que le levier (14) est agencé en un couple de platines latérales (15) disposées à un côté respectif du couvercle (3), ces platines (15) étant chacune articulées pivotement sur le couvercle (3) et étant munies d'un doigt de poussée (16) de l'extrémité correspondante de l'axe (6), un organe de manœuvre (17) du levier (14) reliant longitudinalement les platines (15) l'une à l'autre pour provoquer leur pivotement conjoint. 4. A mounting device according to claim 3, characterized in that the lever (14) is arranged in a pair of side plates (15) arranged at a respective side of the lid (3), these plates (15) being each hinged pivoting on the cover (3) and being provided with a pushing finger (16) of the corresponding end of the axis (6), an operating member (17) of the lever (14) longitudinally connecting the plates (15). ) to one another to cause their joint pivoting.
5.- Dispositif de montage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'en position de fermeture du couvercle (3), l'orientation et/ou les positions relatives entre les premières lumières (7) et les logements (10) correspondent à une prise d'appui (13) contre eux de l'axe (6) qui génère, en réaction à un effort (S) appliqué sur le couvercle (3) pour son passage vers sa position d'ouverture, tout au moins un effort de réaction (F) neutre orienté sensiblement parallèlement audit effort (S) appliqué, sinon un effort de réaction (F) comprenant une composante provoquant une repoussée de l'axe (6) vers le fond du logement (10). 5. A mounting device according to any one of the preceding claims, characterized in that in the closed position of the cover (3), the orientation and / or the relative positions between the first lights (7) and the housings ( 10) correspond to a bearing (13) against them of the axis (6) which generates, in response to a force (S) applied to the cover (3) for its passage towards its open position, all at least one neutral reaction force (F) oriented substantially parallel to said applied force (S), otherwise a reaction force (F) comprising a component causing a repulsion of the axis (6) towards the bottom of the housing (10).
6.- Dispositif de montage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'en position de fermeture du couvercle (3), lesdits appuis antagonistes (13) sont alignés suivant une génératrice de l'axe (6).6. A mounting device according to any one of the preceding claims, characterized in that in the closed position of the cover (3), said opposing supports (13) are aligned along a generatrix of the axis (6).
7.- Dispositif de montage selon l'une quelconque des revendications précédentes, caractérisé en ce que les deuxièmes lumières (8) comportent en amont du logement (10) une rampe de guidage (1 1 ) de l'axe (6) à rencontre d'une mise sous contrainte et/ou d'une libération progressive des moyens élastiques (5) provoquée par une manœuvre du couvercle (3) respectivement à la fermeture et à l'ouverture.7. A mounting device according to any one of the preceding claims, characterized in that the second lights (8) comprise upstream of the housing (10) a guide ramp (1 1) of the axis (6) to meet stressing and / or progressive release of the elastic means (5) caused by a maneuvering of the lid (3) respectively at closing and opening.
8.- Dispositif de montage selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens élastiques (5) sont indifféremment des moyens élastiques spécifiques ou des moyens élastiques attachés à la mise en œuvre d'un autre organe du mécanisme.8. A mounting device according to any one of the preceding claims, characterized in that the elastic means (5) are indifferently specific elastic means or elastic means attached to the implementation of another mechanism member.
9.- Dispositif de montage selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens élastiques (5) sont confondus avec ceux dont est munie une tête d'impression thermique (2) équipant le mécanisme pour son placage vers le rouleau d'appui (4).9. A mounting device according to any one of the preceding claims, characterized in that the elastic means (5) are coincident with those which is provided with a thermal printing head (2) equipping the mechanism for its veneer to the roller support (4).
10.- Mécanisme d'impression thermique équipé d'un dispositif de montage selon l'une quelconque des revendications précédentes. 10. Thermal printing mechanism equipped with a mounting device according to any one of the preceding claims.
EP08805752.6A 2007-05-09 2008-05-07 Device for mounting a movably mounted lockable cover on the chassis of a thermal printing mechanism Active EP2150416B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08805752T PL2150416T3 (en) 2007-05-09 2008-05-07 Device for mounting a movably mounted lockable cover on the chassis of a thermal printing mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0754942A FR2915926B1 (en) 2007-05-09 2007-05-09 DEVICE FOR MOUNTING A MOUNTED LOCKABLE LID COVER ON THE CHASSIS OF A THERMAL PRINTING MECHANISM
PCT/FR2008/050802 WO2008149000A2 (en) 2007-05-09 2008-05-07 Device for mounting a movably mounted lockable cover on the chassis of a thermal printing mechanism

Publications (2)

Publication Number Publication Date
EP2150416A2 true EP2150416A2 (en) 2010-02-10
EP2150416B1 EP2150416B1 (en) 2013-07-03

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EP08805752.6A Active EP2150416B1 (en) 2007-05-09 2008-05-07 Device for mounting a movably mounted lockable cover on the chassis of a thermal printing mechanism

Country Status (5)

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EP (1) EP2150416B1 (en)
ES (1) ES2429110T3 (en)
FR (1) FR2915926B1 (en)
PL (1) PL2150416T3 (en)
WO (1) WO2008149000A2 (en)

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Publication number Priority date Publication date Assignee Title
EP3549890B1 (en) 2018-04-04 2020-04-08 GeBE Elektronik und Feinwerktechnik GmbH Etiquette dispensing device and corresponding printer

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Publication number Priority date Publication date Assignee Title
US6118469A (en) * 1995-11-21 2000-09-12 Seiko Epson Corporation Thermal printer
FR2786727B1 (en) * 1998-12-02 2001-06-01 A P S Engineering QUICK CLOSING THERMAL PRINTING DEVICE
FR2829964B1 (en) * 2001-09-21 2003-12-05 Axiohm OPENABLE AND LOCKABLE THERMAL PRINTING DEVICE
JP2005342942A (en) * 2004-06-01 2005-12-15 Seiko Instruments Inc Heat activation device and printer
JP4694871B2 (en) * 2005-03-30 2011-06-08 富士通コンポーネント株式会社 Printer device

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Title
See references of WO2008149000A2 *

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ES2429110T3 (en) 2013-11-13
EP2150416B1 (en) 2013-07-03
WO2008149000A2 (en) 2008-12-11
PL2150416T3 (en) 2013-10-31
FR2915926B1 (en) 2011-02-11
FR2915926A1 (en) 2008-11-14
WO2008149000A3 (en) 2009-03-05

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