EP3117044A1 - Device for locking and unlocking a cover in particular of a manhole with the aid of a key - Google Patents

Device for locking and unlocking a cover in particular of a manhole with the aid of a key

Info

Publication number
EP3117044A1
EP3117044A1 EP15715331.3A EP15715331A EP3117044A1 EP 3117044 A1 EP3117044 A1 EP 3117044A1 EP 15715331 A EP15715331 A EP 15715331A EP 3117044 A1 EP3117044 A1 EP 3117044A1
Authority
EP
European Patent Office
Prior art keywords
frame
buffer
bolt
latch
rotor
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
EP15715331.3A
Other languages
German (de)
French (fr)
Other versions
EP3117044B1 (en
Inventor
Sylvain Jean-Jacques Daniel Ghislain DEBUCHY
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.)
EJ Emea SAS
Original Assignee
EJ Emea SAS
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 EJ Emea SAS filed Critical EJ Emea SAS
Publication of EP3117044A1 publication Critical patent/EP3117044A1/en
Application granted granted Critical
Publication of EP3117044B1 publication Critical patent/EP3117044B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1427—Locking devices
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
    • E05B35/008—Locks for use with special keys or a plurality of keys ; keys therefor for simple tool-like keys
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/006—Locks or fastenings for special use for covers or panels

Definitions

  • Locking and unlocking device using a key of a buffer or cover, especially a manhole The present invention relates to a device for locking and unlocking using a key of a buffer or cover on a frame.
  • Such a device comprising a latch integral with the buffer and carrying at its projecting end under the buffer a bolt which can pivot, under the action of a key engaged with the latch, between a locking position to which the latch bolt latch is engaged in a striker of the frame and an unlocking position to which the latch bolt is disengaged from this striker.
  • the strike is achieved in some designs by a rigid tab of the frame projecting therein and under which is retained the bolt when it occupies its locked position of the buffer frame.
  • a resilient sealing support of an elastic material is secured to the frame or the buffer and located between the buffer and the frame in the closed state of the manhole to achieve its function of watertightness.
  • the object of the present invention is to overcome the above disadvantages by proposing a solution for locking that does not cause noise during the passage of the vehicle over the buffer.
  • the two fingers of the latch bolt are arranged in a direction substantially perpendicular to both sides corresponding adjacent ones of the frame and the buffer when they occupy their locking position of the buffer to the frame and are arranged in a direction substantially parallel to the corresponding side of the buffer when they occupy their unlocking position and the two ramps of the buffer and the frame are rectilinear and extend in two planes substantially perpendicular respectively to the upper plane plane of the buffer and the plane of the frame.
  • the striker of the frame is formed by a recess for receiving the corresponding finger of the bolt, which recess is made in an ear protruding outwardly from the side wall of the frame delimiting the side of the frame adjacent to the side of the buffer and is located in downstream of the ascending part of the ramp of the frame also formed in the ear of the side wall of the frame.
  • the bottom of the recess trapping the corresponding finger of the bolt is substantially at the same level as the upper edge of the ramp of the buffer on which the other finger of the bolt bears when the buffer occupies its locking position to the frame to which the bolt is substantially parallel to the upper plane of the pad.
  • the lock comprises a rotor pivotally mounted in a housing of the plug opening on either side of the latter and an elastically deformable member is interposed between the rotor and the buffer so as to axially return the rotor and the bolt in a direction directed towards the upper planar veil of the buffer.
  • the rotor comprises a cylindrical head housed in a counterbore of the housing opening out of the upper planar web of the buffer and a cylindrical axis, of smaller diameter than the cylindrical head, passing through a bore of the housing made in a barrel of the buffer projecting therefrom and at the free end of which is fixed transversely the bolt.
  • the return member is interposed between the rotor head and the counterbore bottom concentrically to the cylindrical axis.
  • the return member is a helical or corrugated spring.
  • the rotor head includes an indentation into which one end of the key can engage to rotate the rotor about one-quarter turn between the two locking and unlocking positions of the bolt.
  • the key comprises a rod whose end comprises two opposite lugs, aligned and able to engage in the conjugate shape of the rotor head.
  • the end of the key is trapped in the imprint of the rotor head when the latter occupies its unlocking position of the bolt.
  • an elastic sealing support is interposed between the frame and the buffer when the latter occupies its locking position to the frame and is integral with the frame or the buffer.
  • the elastic sealing support has a generally U-shaped cross-section and is integral with the frame while capping an upper part of the peripheral wall of the frame delimiting its opening, the elastic sealing support engaging in a peripheral groove. buffer in the buffer lock position on the frame.
  • the buffer is hinged to the frame by hinge means and the striker of the frame is located opposite these hinge means.
  • FIG. 2 is a sectional view along the line II-II of Figure 1;
  • FIG. 3 is an enlarged view of the circled portion III of Figure 2 and showing the latch and bolt assembly occupying the locking position of the frame buffer;
  • FIG. 4 is an enlarged view similar to that of FIG. 3 and showing the latch and bolt assembly occupying the position of unlocking the buffer from the frame;
  • FIG. 5 is a sectional view along the line V-V of Figure 1;
  • Figure 6 is a perspective view showing the buffer at its upright position of opening the frame of the manhole
  • FIG. 7 is an enlarged perspective front view of the circled portion VII of FIG. 6;
  • FIG. 8 is a partial perspective view from below of the frame and the buffer of which the bolt and bolt assembly occupies its unlocked position
  • Figure 9 is a perspective view similar to that of Figure 8 and showing the latch and bolt assembly occupying its locking position of the frame buffer;
  • FIG. 10 is a perspective view of the operating key of the buffer lock.
  • FIG. 11 is a perspective view of the bolt and bolt assembly of the buffer.
  • the reference 1 designates a manhole comprising a frame 2 and a pad or cover 3 supported by the frame 2 and for closing the opening 5 of the frame 2 access to the manhole.
  • the frame 2 although not shown, is buried in the ground so that in the closed position of its opening 5 by the buffer 3, the upper planar web 4 of the buffer 3 is in elevation with respect to the upper surface of the soil may be constituted by a floor, for example about 20mm, which contributes to the sealing of runoff from the eyes.
  • the frame 2 has four sides 2a-2d defining a square which defines the opening 5 of the frame 2 to access the underground opening of the gaze.
  • the frame 2 comprises an outer collar 6 provided at each of its corners with four lugs 6a and used for the handling of the frame 2 provided with its buffer 3.
  • the four sides 2a-2d of the frame 2 are delimited by a peripheral wall 7 consisting of four lateral walls 8 projecting substantially perpendicularly and below the plane containing the collar 6 of this frame.
  • the buffer 3 is hinged to the one 2a of the frame 2 by means of hinge means 9 allowing the pad 3 to pivot between a closed position to which the upper planar web 4 of the buffer 3 closes the opening 6 frame 2 and an erect opening position at which the buffer 3 releases the opening 5 of the frame 2 to access the manhole.
  • the hinge means 9 are known per se and do not have to be described because they do not form part of the invention.
  • the pad 3 has the general shape of a square with rounded corners and has four inner sides 3a-3d delimited by a peripheral wall 10, the side walls 11 forming substantially a square protrude from the inner face of the pad substantially perpendicular to the plane web 4 of it.
  • the articulation means 9 connect the one 3a of the sides of the buffer 3 to the adjacent side 2a of the frame 2.
  • the inner face of the plane veil 4 is provided with a rib grid 12 for stiffening.
  • the buffer 3 is provided, integral therewith opposite its side 3a hinged to the adjacent side 2a of the frame 2, a latch 13 carrying at its end projecting under the flat web 4 of the buffer a bolt 14 allowing to lock the buffer 3 to the frame 2 or to unlock it from the latter.
  • the latch 13 is housed in the buffer 3 so as to be accessible from outside the buffer 3 to allow an operating key 15 to be brought into engagement with the latch 13 to pivot the latch 13 and the bolt 4 between a locking position of the buffer 3 to the frame 2 to which the bolt 14 is engaged in a keeper 16 of the frame 2 and an unlocking position to which the bolt 14 is disengaged from the striker 16 of this frame.
  • the bolt 14 of the latch 13 comprises two radial fingers 17 and aligned in a direction substantially parallel to the upper planar web 4 of the buffer 3.
  • the latch 13 is constituted by a rotor pivotally mounted in a housing 18 of the buffer 3 opening on either side of this buffer.
  • the rotor of the latch 13 comprises a generally cylindrical head 19 housed in a countersink 20 of the housing 18 opening out of the upper planar web 4 of the buffer 3, that is to say outside the latter.
  • the rotor of the latch 13 further comprises a cylindrical axis 21, of smaller diameter than the cylindrical head 19, and passing through a bore 22 of the housing 18 made in a barrel portion 23 of the buffer 3 projecting under the plane veil 4 of this buffer.
  • the bolt 14 is fixed to the free end of the cylindrical axis 21 of the latch 13 extending transversely to this axis.
  • the two fingers 17 of the bolt 14 protrude on either side of the cylindrical shaft 21 of the latch 13 of the same distance.
  • the bolt 14 which is constituted by a cylindrical bar, is fixed in a through bore 24 of the cylindrical shaft 21 by a screw 25 inserted into a threaded hole 26 formed at the end of the cylindrical shaft 21 coaxially with it and opening into the bore 24.
  • a screw 25 inserted into a threaded hole 26 formed at the end of the cylindrical shaft 21 coaxially with it and opening into the bore 24.
  • the latch 13 further comprises an elastically deformable member 27 interposed between the rotor of the latch 13 and the buffer 3 so as to axially return the rotor and the bolt 14 in a direction directed towards the upper plane web 4 of the buffer 3.
  • the elastically deformable member 27 is interposed between a shoulder 28 defined between the cylindrical head 19 and the cylindrical axis 21 of the latch 13 and the bottom 29 of the countersink 20 housing the cylindrical head 19.
  • the elastically deformable member 27 is constituted by a helical spring mounted concentrically around the portion of the cylindrical axis 21 of the lock 13 housed in the counterbore 20.
  • the elastically deformable member is a corrugated spring, known in self.
  • the cylindrical head 19 of the lock 13 comprises a recess 30 in which can engage an end 31 of the operating key 15 to allow the rotation of the rotor latch 13 a quarter of a turn between the two locking and unlocking positions of the bolt 14.
  • the impression 30 comprises a straight mortise 32 hollowed radially in the head 19 and which opens outwardly from the end face 19a of the head 19 to the through a groove 33 which also opens radially on the same side as the mortise 32.
  • the end 31 of the operating rod 15 comprises two pins 34 opposite and aligned transversely to the bent end portion 15a of the rod 15 and which have a shape conjugate to that of the mortise 32, the end portion 15a of the rod 15 located just above the tenons 34 of the end 31 engaging in the groove 33 to allow the introduction of the pins 34 in the mortise 32 of the head 19 of the latch 13.
  • the width of the groove 33 is smaller than the width of the mortise 32 to allow the two pins 34 of the end 31 of the operating rod 15 to be trapped in the mortise 32 as will be seen later.
  • the housing 18 opening out of the upper planar web 4 of the buffer 3 comprises a recess 35 situated opposite the mortise 32 and the groove 33 when the rotor of the latch 13 occupies its position at which the bolt 14 locks the buffer 3 on the frame 2.
  • the two fingers 17 of the bolt 14 are arranged in a direction substantially perpendicular to the two adjacent sides 2d of the frame 2 and 3d of the pad 3 as shown in FIG. 9 with one of the two fingers 17 engaged in the keeper 16 of the frame 2, while the two fingers of the bolt 14 are arranged in a direction substantially parallel to the side 3d of the buffer 3 when the latter is unlocked from the frame 2 as shown in Figure 8.
  • Figures 8 and 9 show that the finger 17 of the bolt 14 intended to engage in the keeper 16 moves over the corresponding part of the inner wall 11 defining the side 3d of the buffer 3.
  • the buffer 3 comprises a ramp 36 formed in the upper part of a wall 37 projecting under the upper planar web 4 of the buffer 3 in a plane perpendicular to this web and which extends substantially parallel to the inner wall 11 defining the 3d side buffer 3.
  • the ramp 36 and the wall 37 are cast with the buffer 3 and the ramp 36 has an upward slope from side 3b to the parallel side 3c of the buffer 3.
  • the upward slope of the ramp 36 terminates in a terminal portion 36a substantially parallel to the top plane veil 4 of the buffer 3.
  • the wall 37 with ramp 36 is located near the barrel portion 23 of the buffer 3 and the ramp 36 has a slope relative to the upper plane web 4 of the buffer 3 so that one 17 of the two fingers of the bolt 14 can slide along the ramp 36 when the rotor of the latch 13 is operated in the locking or unlocking direction of the buffer 3 to the frame 2.
  • the keeper 16 of the frame 2 is formed in an ear 38 protruding from the side wall 8 of the frame 2 delimiting the side 2d of this frame.
  • the ear 38 of the frame 2 thus comprises an external wall 39 parallel to the corresponding wall 8 of this frame and which is connected to the side wall 8 by two walls 40 perpendicular to the side wall 8, a portion of which is absent between the two walls. parallel 40 so that the ear 38 opens out towards the opening 5 of the frame 2.
  • the ear 38 has in section in a plane perpendicular to the corresponding side wall 8 of the frame 2 a U-shaped whose parallel branches 40 are connected to each other by the rectilinear base wall 39.
  • the ear 38 of the frame 2 comprises, formed therein and opposite the outer edges of the walls 39, 40 of the ear 38, a ramp 41 whose slope, considering the buffer 3 occupying its closed position. of the opening 5 of the frame 2, is inclined in opposite direction to the ramp 36 of the buffer 3, the two ramps 36, 41 thus being rectilinear and extending respectively in two planes substantially perpendicular respectively to the plane web 4 of the buffer 3 and to the plan of the frame 2.
  • the ramp 41 has a width substantially equal to the width of the walls 40 and projects from the bottom of the ear 38 of the frame 2.
  • the ramp 41 has a relative slope such that in the closed position of the buffer 3 to the frame 2, the other finger 17 of the bolt 14, opposite that which can slide along the ramp 36 of the buffer 3, can also slide along the ramp 41 in a locking or unlocking direction of the bolt 14 of the latch 13.
  • the keeper 16 of the frame 2 is also formed in the lug 38 and is constituted by a recess 42 which is located downstream or behind the upward portion of the ramp 41 of the frame 2.
  • the recess 42 is defined between the edge upper end of the ramp 41 and the wall 40 located opposite this edge, the recess 42 being below said edge, considering FIG. 8.
  • An elastic sealing support 50 is interposed between the frame 2 and the pad 3 when the latter occupies its closed position of the frame 2, the elastic sealing support 50 being integral with either the pad 3 or the frame 2. This support elastic ensures watertightness to runoff. In the present case, the elastic sealing support 50 is integral with the frame 2.
  • the elastic sealing support which is made of an elastomeric material, has in cross section a generally inverted U-shaped capping an upper peripheral wall portion 7a of the frame 2 which is located in extension of the peripheral wall 7 above the outer flange 6, the peripheral wall portion 7a also delimiting with the peripheral wall 7 the opening 5 of the frame 2.
  • the elastic sealing support 50 can be retained on the upper peripheral wall 7a by means of grooves 51 projecting from the internal faces of the peripheral branches 52 of the support 50 resiliently bearing on the lateral faces of the upper wall 7a.
  • the buffer 3 comprises a peripheral groove 53 made in the upper plane web 4 of this buffer between the outer peripheral edge of the latter and its inner peripheral wall 10.
  • the buffer 3 occupies its closed position on the frame 2 to close the opening 5 of the latter and the latch 14 of the latch 13 occupies its locked position shown in particular in Figure 9.
  • the two fingers 17 of the bolt 14 are arranged in a direction substantially perpendicular to the two adjacent sides 2d of the frame 2 and 3d of the buffer 3 with one of the fingers engaged in the recess 42 of the striker 16 and the other finger in support in the upper part of the ramp 36, with the elastically deformable member 27 recalling and holding the fingers 17 of the bolt 14 resting in the recess 42 and on the ramp 36 at a position substantially parallel to the upper plane web 4 of the buffer 3
  • the bottom of the recess 42 is substantially at the same level as the upper rising edge of the ramp 36 and on which bears the corresponding finger 17 of the bolt 14 which then occupies its position substantially parallel of the veil 4.
  • the operator maneuvers the key 15 to turn the head 19 of the latch 13 about a quarter turn around its longitudinal axis to cause the simultaneous pivoting also a quarter turn of the fingers 17 of the bolt 14 of the locking position of Figure 9 to the unlocked position of Figure 8 in which the two fingers 17 are substantially parallel to the side 3d of the buffer 3.
  • the finger 17 which was supported at the bottom of the recess 42 abuts against a wall 60 projecting vertically from the inner face of the upper plane web 4 of the buffer 3, which wall 60 comes from casting.
  • the operator only has to exert a traction force on the key 15 to pivot the pad 3 from its closed position to its open position shown in FIG. 6 to which it occupies a stable erect position, for example about 110 °, relative to the plane of the frame 2.
  • the bolt 14 holds the latch 13 in the housing 18 of the veil 4 of the buffer 3 abutting on the barrel portion 23.
  • the organ elastically deformable 27 may, in its relaxed position, exert an axial force on the latch 13 bringing the bolt 14 bearing on the free end face of the barrel 23.
  • the end face 19a of the head 19 of the latch 13 is located substantially in the plane of the external face of the upper plane veil 4 of the buffer 3 when the latter is unlocked from the frame 2.
  • the lock is exerted on the buffer against the frame 2 increasing as the fingers move on the ramps 36, 41 until the fingers occupy their locking position of the buffer 3 to frame 2 one of the fingers 17 is trapped in the recess 42 of the striker 16 and the other finger 17 bears in the upper part of the ramp 36, to exert a determined stress on the elastic support 50 and ensuring therefore a watertightness seal between the buffer 3 and the frame 2.
  • the stress exerted on the buffer 3 against the frame 2 by the fingers 17 of the bolt 14 resting on the ramp 36 and in the recess 42 of the waste 16 makes it possible to compensate the deformation of the elastic support 50 and its wear.
  • the invention has been described above with reference to a frame and a generally square shaped buffer, but it can be applied to a buffer assembly and circular frame or to at least one triangulated pad forming part of several triangulated pads of closing a rectangular frame.
  • the buffer 3 can benefit from an assistant at the opening comprising at least one assistance cylinder interposed between the buffer 3 and the frame 2.
  • the locking and unlocking device of the invention is of an extremely simple and inexpensive structure and makes it possible to effectively control the stress exerted on the pad against the frame, particularly when there is an elastic support of sealing interposed between the buffer and the frame and whose deformation and wear can be compensated.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The present invention relates to a device for locking and unlocking a cover on a frame in particular of a manhole with the aid of a key. According to the invention, the device is characterized in that the bolt (14) of the lock (13) comprises two radial fingers (17) that are aligned in a direction parallel to a flat web (4) of the cover (3) and are able to cooperate, when the cover (3) is in a position closing the frame (2), with two ramps (36, 41) that are integral with the frame (2) and the cover (3), respectively, so as to exert on the cover (3) a force for locking to the frame (2), said force increasing as the fingers (17) of the bolt (14) move over the ramps (36, 41) until the fingers (17) are in their position locking the cover (3) to the frame (2), in which one of the two fingers (17) of the bolt (14) is trapped in the strike (16) of the frame (2). The invention is applicable in the field of highway equipment.

Description

Dispositif de verrouillage et de déverrouillage à l'aide d'une clé d'un tampon ou couvercle notamment d'un regard de chaussée. La présente invention concerne un dispositif de verrouillage et de déverrouillage à l'aide d'une clé d'un tampon ou couvercle sur un cadre.  Locking and unlocking device using a key of a buffer or cover, especially a manhole. The present invention relates to a device for locking and unlocking using a key of a buffer or cover on a frame.
Elle s'applique notamment mais de manière non limitative à un regard de chaussée.  It applies in particular but in a non-limiting manner to a roadway.
On connaît un tel dispositif comprenant un verrou solidaire du tampon et portant à son extrémité en saillie sous le tampon un pêne pouvant pivoter, sous l'action d'une clé en prise avec le verrou, entre une position de verrouillage à laquelle le pêne du verrou est engagé dans une gâche du cadre et une position de déverrouillage à laquelle le pêne du verrou est désengagé de cette gâche.  Such a device is known comprising a latch integral with the buffer and carrying at its projecting end under the buffer a bolt which can pivot, under the action of a key engaged with the latch, between a locking position to which the latch bolt latch is engaged in a striker of the frame and an unlocking position to which the latch bolt is disengaged from this striker.
La gâche est réalisée dans certaines conceptions par une patte rigide du cadre faisant saillie à l'intérieur de celui-ci et sous laquelle est retenu le pêne lorsqu'il occupe sa position de verrouillage du tampon au cadre.  The strike is achieved in some designs by a rigid tab of the frame projecting therein and under which is retained the bolt when it occupies its locked position of the buffer frame.
En outre, un support élastique d'étanchéité en une matière élastique, telle qu'un matériau élastomère, est solidaire du cadre ou du tampon et situé entre le tampon et le cadre à l'état fermé du regard de chaussée pour réaliser sa fonction d'étanchéité aux eaux de ruissellement .  In addition, a resilient sealing support of an elastic material, such as an elastomeric material, is secured to the frame or the buffer and located between the buffer and the frame in the closed state of the manhole to achieve its function of watertightness.
Cependant, à l'état de fermeture du tampon sur le cadre du regard de chaussée, le pêne est disposé sous la patte formant gâche du cadre suivant un jeu, même dans le cas de la présence du support élastique d'étanchéité, pouvant générer des bruits de roulement lors du passage de véhicule sur le tampon. En outre, ce jeu peut augmenter dans le temps lors de l'usure du support élastique d'étanchéité. Ce problème de génération de bruits de roulement se pose également dans le cas où le support élastique exercerait une contrainte plaquant le pêne sous la patte formant gâche. En effet, lors du passage d'un véhicule sur le tampon, le support élastique d'étanchéité s'écrasera pour créer un jeu entre pêne et patte formant gâche et une fois le véhicule ayant quitté le tampon, un bruit de claquement de retour du pêne sous cette patte se produira. However, in the state of closure of the buffer on the frame of the manhole, the bolt is disposed under the striker tab of the frame in a game, even in the case of the presence of the elastic sealing support, which can generate rolling noise when passing the vehicle on the buffer. In addition, this game can increase over time during the wear of the elastic sealing support. This problem of generation of rolling noises also arises in the case where the elastic support exerts a stress bolt under the tab forming strike. Indeed, during the passage of a vehicle on the buffer, the elastic sealing support will crash to create a game between bolt and striker tab and once the vehicle having left the buffer, a click sound of return of bolt under this paw will occur.
La présente invention a pour but de remédier aux inconvénients ci-dessus en proposant une solution permettant de verrouiller n'occasionnant pas de bruit lors du passage de véhicule sur le tampon.  The object of the present invention is to overcome the above disadvantages by proposing a solution for locking that does not cause noise during the passage of the vehicle over the buffer.
A cet effet, selon l'invention, le dispositif de verrouillage et de déverrouillage à l'aide d'une clé d'un tampon ou couvercle sur un cadre notamment d'un regard de chaussée, du type comprenant un verrou solidaire du tampon et portant à son extrémité en saillie sous le tampon un pêne pouvant pivoter, sous l'action de la clé, entre une position de verrouillage dans laquelle le pêne du verrou est engagé dans une gâche du cadre et une position de déverrouillage à laquelle le pêne du verrou est désengagé de la gâche, est caractérisé en ce que le pêne du verrou comprend deux doigts radiaux, alignés suivant une direction sensiblement parallèle à un voile supérieur plan du tampon et aptes à coopérer, lorsque le tampon occupe une position de fermeture du cadre, respectivement avec deux rampes parallèles, inclinées en sens opposés, et solidaires respectivement du tampon et du cadre sous ceux-ci, de manière à exercer sur le tampon une contrainte de verrouillage au cadre allant en augmentant au fur et à mesure que les doigts du pêne se déplacent sur les rampes sous l'action de la clé jusqu'à ce que les doigts du pêne occupent leur position de verrouillage du tampon au cadre à laquelle l'un des deux doigts du pêne est emprisonné dans la gâche du cadre.  For this purpose, according to the invention, the device for locking and unlocking with the aid of a key of a buffer or cover on a frame including a manhole, of the type comprising a lock integral with the buffer and carrying at its projecting end under the buffer a bolt that can pivot, under the action of the key, between a locking position in which the bolt of the lock is engaged in a striker of the frame and an unlocking position to which the bolt of the latch is disengaged from the striker, is characterized in that the latch bolt comprises two radial fingers, aligned in a direction substantially parallel to a plane upper web of the buffer and adapted to cooperate, when the buffer occupies a closed position of the frame, respectively with two parallel ramps, inclined in opposite directions, and respectively secured to the buffer and the frame therein, so as to exert on the buffer a locking constraint at frame increasing as the fingers of the bolt move on the ramps under the action of the key until the fingers of the bolt occupy their locking position of the buffer to the frame to which one of the two fingers of the bolt is trapped in the keeper of the frame.
Dans le cas où le tampon est constitué par une plaque rectangulaire voire même triangulaire, les deux doigts du pêne du verrou sont disposés suivant une direction sensiblement perpendiculaire aux deux côtés adjacents correspondants du cadre et du tampon lorsqu'ils occupent leur position de verrouillage du tampon au cadre et sont disposés suivant une direction sensiblement parallèle au côté correspondant du tampon lorsqu'ils occupent leur position de déverrouillage et les deux rampes du tampon et du cadre sont rectilignes et s'étendent dans deux plans sensiblement perpendiculaires respectivement au voile supérieur plan du tampon et au plan du cadre. In the case where the buffer is constituted by a rectangular plate or even triangular, the two fingers of the latch bolt are arranged in a direction substantially perpendicular to both sides corresponding adjacent ones of the frame and the buffer when they occupy their locking position of the buffer to the frame and are arranged in a direction substantially parallel to the corresponding side of the buffer when they occupy their unlocking position and the two ramps of the buffer and the frame are rectilinear and extend in two planes substantially perpendicular respectively to the upper plane plane of the buffer and the plane of the frame.
De préférence, la gâche du cadre est formée par un évidement de réception du doigt correspondant du pêne, lequel évidement est réalisé dans une oreille faisant saillie extérieurement de la paroi latérale du cadre délimitant le côté du cadre adjacent au côté du tampon et est situé en aval de la partie ascendante de la rampe du cadre formée également dans l'oreille de la paroi latérale du cadre.  Preferably, the striker of the frame is formed by a recess for receiving the corresponding finger of the bolt, which recess is made in an ear protruding outwardly from the side wall of the frame delimiting the side of the frame adjacent to the side of the buffer and is located in downstream of the ascending part of the ramp of the frame also formed in the ear of the side wall of the frame.
Le fond de l' évidement emprisonnant le doigt correspondant du pêne est sensiblement au même niveau que le bord supérieur de la rampe du tampon sur lequel est en appui l'autre doigt du pêne lorsque le tampon occupe sa position de verrouillage au cadre à laquelle le pêne est sensiblement parallèle au voile supérieur plan du tampon.  The bottom of the recess trapping the corresponding finger of the bolt is substantially at the same level as the upper edge of the ramp of the buffer on which the other finger of the bolt bears when the buffer occupies its locking position to the frame to which the bolt is substantially parallel to the upper plane of the pad.
De préférence, le verrou comprend un rotor monté à pivotement dans un logement du tampon débouchant de part et d' autre de ce dernier et un organe élastiquement déformable est interposé entre le rotor et le tampon de manière à rappeler axialement le rotor et le pêne dans un sens dirigé vers le voile supérieur plan du tampon.  Preferably, the lock comprises a rotor pivotally mounted in a housing of the plug opening on either side of the latter and an elastically deformable member is interposed between the rotor and the buffer so as to axially return the rotor and the bolt in a direction directed towards the upper planar veil of the buffer.
Le rotor comprend une tête cylindrique logée dans un lamage du logement débouchant du voile supérieur plan du tampon et un axe cylindrique, de plus petit diamètre que la tête cylindrique, traversant un perçage du logement réalisé dans un fût du tampon faisant saillie sous celui-ci et à l'extrémité libre duquel est fixé transversalement le pêne. L'organe de rappel est interposé entre la tête du rotor et le fond de lamage concentriquement à l'axe cylindrique . The rotor comprises a cylindrical head housed in a counterbore of the housing opening out of the upper planar web of the buffer and a cylindrical axis, of smaller diameter than the cylindrical head, passing through a bore of the housing made in a barrel of the buffer projecting therefrom and at the free end of which is fixed transversely the bolt. The return member is interposed between the rotor head and the counterbore bottom concentrically to the cylindrical axis.
De préférence, l'organe de rappel est un ressort hélicoïdal ou ondulé.  Preferably, the return member is a helical or corrugated spring.
La tête du rotor comprend une empreinte dans laquelle peut venir en prise une extrémité de la clé pour faire pivoter le rotor d'environ un quart de tour entre les deux positions de verrouillage et de déverrouillage du pêne.  The rotor head includes an indentation into which one end of the key can engage to rotate the rotor about one-quarter turn between the two locking and unlocking positions of the bolt.
La clé comprend une tige dont une extrémité comporte deux tenons opposés, alignés et aptes à s'engager dans l'empreinte de forme conjuguée de la tête du rotor.  The key comprises a rod whose end comprises two opposite lugs, aligned and able to engage in the conjugate shape of the rotor head.
L'extrémité de la clé est emprisonnée dans l'empreinte de la tête du rotor lorsque ce dernier occupe sa position de déverrouillage du pêne.  The end of the key is trapped in the imprint of the rotor head when the latter occupies its unlocking position of the bolt.
De préférence, un support élastique d'étanchéité est interposé entre le cadre et le tampon lorsque ce dernier occupe sa position de verrouillage au cadre et est solidaire du cadre ou du tampon.  Preferably, an elastic sealing support is interposed between the frame and the buffer when the latter occupies its locking position to the frame and is integral with the frame or the buffer.
Avantageusement, le support élastique d'étanchéité présente en section transversale une forme générale en U et est solidaire du cadre en coiffant une partie supérieure de la paroi périphérique du cadre délimitant son ouverture, le support élastique d'étanchéité s ' engageant dans une rainure périphérique du tampon en position de verrouillage du tampon sur le cadre.  Advantageously, the elastic sealing support has a generally U-shaped cross-section and is integral with the frame while capping an upper part of the peripheral wall of the frame delimiting its opening, the elastic sealing support engaging in a peripheral groove. buffer in the buffer lock position on the frame.
Le tampon est monté articulé au cadre par des moyens d'articulation et la gâche du cadre est située à l'opposé de ces moyens d'articulation.  The buffer is hinged to the frame by hinge means and the striker of the frame is located opposite these hinge means.
L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels : - la figure 1 est une vue de dessus d'un regard de chaussée à cadre et tampon à l'état fermé et conforme à 1 ' invention ; The invention will be better understood, and other objects, features, details and advantages thereof will appear more clearly in the following description given with reference to the accompanying schematic drawings given solely by way of example illustrating an embodiment. of the invention and in which: - Figure 1 is a top view of a closed frame frame and buffer in the closed state and according to one invention;
- la figure 2 est une vue en coupe suivant la ligne II-II de la figure 1 ;  - Figure 2 is a sectional view along the line II-II of Figure 1;
- la figure 3 est une vue agrandie de la partie cerclée en III de la figure 2 et représentant l'ensemble à verrou et pêne occupant la position de verrouillage du tampon au cadre ;  - Figure 3 is an enlarged view of the circled portion III of Figure 2 and showing the latch and bolt assembly occupying the locking position of the frame buffer;
- la figure 4 est une vue agrandie semblable à celle de la figure 3 et représentant l'ensemble à verrou et pêne occupant la position de déverrouillage du tampon au cadre ;  FIG. 4 is an enlarged view similar to that of FIG. 3 and showing the latch and bolt assembly occupying the position of unlocking the buffer from the frame;
- la figure 5 est une vue en coupe suivant la ligne V-V de la figure 1 ;  - Figure 5 is a sectional view along the line V-V of Figure 1;
la figure 6 est une vue en perspective représentant le tampon à sa position debout d'ouverture du cadre du regard de chaussée ;  Figure 6 is a perspective view showing the buffer at its upright position of opening the frame of the manhole;
- la figure 7 est une vue de face en perspective agrandie de la partie cerclée en VII de la figure 6 ;  FIG. 7 is an enlarged perspective front view of the circled portion VII of FIG. 6;
- la figure 8 est une vue partielle en perspective de dessous du cadre et du tampon dont l'ensemble à verrou et pêne occupe sa position déverrouillée ;  FIG. 8 is a partial perspective view from below of the frame and the buffer of which the bolt and bolt assembly occupies its unlocked position;
- la figure 9 est une vue en perspective semblable à celle de la figure 8 et représentant l'ensemble à verrou et pêne occupant sa position de verrouillage du tampon au cadre ;  - Figure 9 is a perspective view similar to that of Figure 8 and showing the latch and bolt assembly occupying its locking position of the frame buffer;
- la figure 10 est une vue en perspective de la clé de manœuvre du verrou du tampon ; et  FIG. 10 is a perspective view of the operating key of the buffer lock; and
- la figure 11 est une vue en perspective de l'ensemble à verrou et pêne du tampon.  - Figure 11 is a perspective view of the bolt and bolt assembly of the buffer.
En se reportant aux figures, la référence 1 désigne un regard de chaussée comprenant un cadre 2 et un tampon ou couvercle 3 supporté par le cadre 2 et permettant d'obturer l'ouverture 5 du cadre 2 d'accès au regard de chaussée . Le cadre 2, bien que cela ne soit pas représenté, est enfoui dans le sol de manière qu'en position d'obturation de son ouverture 5 par le tampon 3, le voile supérieur plan 4 du tampon 3 soit en surélévation par rapport à la surface supérieure du sol pouvant être constituée par une chaussée, par exemple d'environ 20mm, ce qui concourt à l'étanchéité aux eaux de ruissellement du regard. Referring to the figures, the reference 1 designates a manhole comprising a frame 2 and a pad or cover 3 supported by the frame 2 and for closing the opening 5 of the frame 2 access to the manhole. The frame 2, although not shown, is buried in the ground so that in the closed position of its opening 5 by the buffer 3, the upper planar web 4 of the buffer 3 is in elevation with respect to the upper surface of the soil may be constituted by a floor, for example about 20mm, which contributes to the sealing of runoff from the eyes.
Comme représenté, le cadre 2 comporte quatre côtés 2a-2d définissant un carré qui délimite l'ouverture 5 du cadre 2 permettant d'accéder à l'ouverture souterraine du regard .  As shown, the frame 2 has four sides 2a-2d defining a square which defines the opening 5 of the frame 2 to access the underground opening of the gaze.
Le cadre 2 comporte une collerette externe 6 pourvue à chacun de ses coins de quatre oreilles 6a et servant à la manutention du cadre 2 pourvu de son tampon 3.  The frame 2 comprises an outer collar 6 provided at each of its corners with four lugs 6a and used for the handling of the frame 2 provided with its buffer 3.
Les quatre côtés 2a-2d du cadre 2 sont délimités par une paroi périphérique 7 constituée de quatre parois latérales 8 faisant saillie sensiblement perpendiculairement et en dessous du plan contenant la collerette 6 de ce cadre.  The four sides 2a-2d of the frame 2 are delimited by a peripheral wall 7 consisting of four lateral walls 8 projecting substantially perpendicularly and below the plane containing the collar 6 of this frame.
Le tampon 3 est monté articulé à l'un 2a du cadre 2 par l'intermédiaire de moyens d'articulation 9 permettant au tampon 3 de pivoter entre une position de fermeture à laquelle le voile supérieur plan 4 du tampon 3 obture l'ouverture 6 du cadre 2 et une position dressée d'ouverture à laquelle le tampon 3 libère l'ouverture 5 du cadre 2 pour accéder au regard de chaussée.  The buffer 3 is hinged to the one 2a of the frame 2 by means of hinge means 9 allowing the pad 3 to pivot between a closed position to which the upper planar web 4 of the buffer 3 closes the opening 6 frame 2 and an erect opening position at which the buffer 3 releases the opening 5 of the frame 2 to access the manhole.
Les moyens d'articulation 9 sont connus en soi et n'ont pas à être décrits car ne faisant pas partie de 1 ' invention .  The hinge means 9 are known per se and do not have to be described because they do not form part of the invention.
Le tampon 3 présente la forme générale d'un carré à coins arrondis et comporte quatre côtés internes 3a-3d délimités par une paroi périphérique 10 dont les parois latérales 11 formant sensiblement un carré font saillies de la face interne du tampon sensiblement perpendiculairement au voile plan 4 de celui-ci. Les moyens d'articulation 9 relient l'un 3a des côtés du tampon 3 au côté adjacent 2a du cadre 2. The pad 3 has the general shape of a square with rounded corners and has four inner sides 3a-3d delimited by a peripheral wall 10, the side walls 11 forming substantially a square protrude from the inner face of the pad substantially perpendicular to the plane web 4 of it. The articulation means 9 connect the one 3a of the sides of the buffer 3 to the adjacent side 2a of the frame 2.
La face interne du voile plan 4 est pourvue d'un quadrillage à nervures 12 de rigidification .  The inner face of the plane veil 4 is provided with a rib grid 12 for stiffening.
Le tampon 3 est pourvu, solidaire de celui-ci à l'opposé de son côté 3a articulé au côté adjacent 2a du cadre 2, d'un verrou 13 portant à son extrémité en saillie sous le voile plan 4 du tampon un pêne 14 permettant de verrouiller le tampon 3 au cadre 2 ou de le déverrouiller de ce dernier.  The buffer 3 is provided, integral therewith opposite its side 3a hinged to the adjacent side 2a of the frame 2, a latch 13 carrying at its end projecting under the flat web 4 of the buffer a bolt 14 allowing to lock the buffer 3 to the frame 2 or to unlock it from the latter.
Le verrou 13 est logé dans le tampon 3 de manière à être accessible de l'extérieur du tampon 3 pour permettre à une clé de manœuvre 15 d'être amenée en prise avec le verrou 13 pour faire pivoter le verrou 13 et le pêne 4 entre une position de verrouillage du tampon 3 au cadre 2 à laquelle le pêne 14 est engagé dans une gâche 16 du cadre 2 et une position de déverrouillage à laquelle le pêne 14 est désengagé de la gâche 16 de ce cadre.  The latch 13 is housed in the buffer 3 so as to be accessible from outside the buffer 3 to allow an operating key 15 to be brought into engagement with the latch 13 to pivot the latch 13 and the bolt 4 between a locking position of the buffer 3 to the frame 2 to which the bolt 14 is engaged in a keeper 16 of the frame 2 and an unlocking position to which the bolt 14 is disengaged from the striker 16 of this frame.
Selon l'invention, le pêne 14 du verrou 13 comprend deux doigts radiaux 17 et alignés suivant une direction sensiblement parallèle au voile supérieur plan 4 du tampon 3.  According to the invention, the bolt 14 of the latch 13 comprises two radial fingers 17 and aligned in a direction substantially parallel to the upper planar web 4 of the buffer 3.
Le verrou 13 est constitué par un rotor monté à pivotement dans un logement 18 du tampon 3 débouchant de part et d'autre de ce tampon.  The latch 13 is constituted by a rotor pivotally mounted in a housing 18 of the buffer 3 opening on either side of this buffer.
Le rotor du verrou 13 comprend une tête généralement cylindrique 19 logée dans un lamage 20 du logement 18 débouchant du voile supérieur plan 4 du tampon 3, c'est-à-dire à l'extérieur de ce dernier.  The rotor of the latch 13 comprises a generally cylindrical head 19 housed in a countersink 20 of the housing 18 opening out of the upper planar web 4 of the buffer 3, that is to say outside the latter.
Le rotor du verrou 13 comprend en outre un axe cylindrique 21, de plus petit diamètre que la tête cylindrique 19, et traversant un perçage 22 du logement 18 réalisé dans une partie formant fût 23 du tampon 3 faisant saillie sous le voile plan 4 de ce tampon.  The rotor of the latch 13 further comprises a cylindrical axis 21, of smaller diameter than the cylindrical head 19, and passing through a bore 22 of the housing 18 made in a barrel portion 23 of the buffer 3 projecting under the plane veil 4 of this buffer.
Le pêne 14 est fixé à l'extrémité libre de l'axe cylindrique 21 du verrou 13 en s 'étendant transversalement à cet axe. Les deux doigts 17 du pêne 14 font saillie de part et d'autre de l'arbre cylindrique 21 du verrou 13 d'une même distance. The bolt 14 is fixed to the free end of the cylindrical axis 21 of the latch 13 extending transversely to this axis. The two fingers 17 of the bolt 14 protrude on either side of the cylindrical shaft 21 of the latch 13 of the same distance.
Comme cela ressort mieux de la figure 3, le pêne 14, qui est constitué par un barreau cylindrique, est fixé dans un perçage traversant 24 de l'arbre cylindrique 21 par une vis 25 insérée dans un trou taraudé 26 réalisé en bout de l'arbre cylindrique 21 coaxialement à celui-ci et débouchant dans le perçage 24. De la sorte, la position du pêne 14 en direction transversale à l'arbre cylindrique 21 peut être précisément réglée relativement à la gâche 16 du cadre 2.  As best shown in Figure 3, the bolt 14, which is constituted by a cylindrical bar, is fixed in a through bore 24 of the cylindrical shaft 21 by a screw 25 inserted into a threaded hole 26 formed at the end of the cylindrical shaft 21 coaxially with it and opening into the bore 24. In this way, the position of the bolt 14 in the transverse direction to the cylindrical shaft 21 can be precisely adjusted relative to the keeper 16 of the frame 2.
Le verrou 13 comprend en outre un organe élastiquement déformable 27 interposé entre le rotor du verrou 13 et le tampon 3 de manière à rappeler axialement le rotor et le pêne 14 dans un sens dirigé vers le voile plan supérieur 4 du tampon 3.  The latch 13 further comprises an elastically deformable member 27 interposed between the rotor of the latch 13 and the buffer 3 so as to axially return the rotor and the bolt 14 in a direction directed towards the upper plane web 4 of the buffer 3.
De préférence, l'organe élastiquement déformable 27 est interposé entre un épaulement 28 défini entre la tête cylindrique 19 et l'axe cylindrique 21 du verrou 13 et le fond 29 du lamage 20 de logement de la tête cylindrique 19.  Preferably, the elastically deformable member 27 is interposed between a shoulder 28 defined between the cylindrical head 19 and the cylindrical axis 21 of the latch 13 and the bottom 29 of the countersink 20 housing the cylindrical head 19.
Avantageusement, l'organe élastiquement déformable 27 est constitué par un ressort hélicoïdal monté concentriquement autour de la partie de l'axe cylindrique 21 du verrou 13 logée dans le lamage 20. En variante, l'organe élastiquement déformable est un ressort ondulé, connu en soi .  Advantageously, the elastically deformable member 27 is constituted by a helical spring mounted concentrically around the portion of the cylindrical axis 21 of the lock 13 housed in the counterbore 20. Alternatively, the elastically deformable member is a corrugated spring, known in self.
La tête cylindrique 19 du verrou 13 comprend une empreinte 30 dans laquelle peut venir en prise une extrémité 31 de la clé de manœuvre 15 pour permettre le pivotement du rotor du verrou 13 d'un quart de tour entre les deux positions de verrouillage et de déverrouillage du pêne 14.  The cylindrical head 19 of the lock 13 comprises a recess 30 in which can engage an end 31 of the operating key 15 to allow the rotation of the rotor latch 13 a quarter of a turn between the two locking and unlocking positions of the bolt 14.
L'empreinte 30 comprend une mortaise droite 32 creusée radialement dans la tête 19 et qui débouche extérieurement de la face en bout 19a de la tête 19 au travers d'une rainure 33 qui débouche également radialement du même côté que la mortaise 32. The impression 30 comprises a straight mortise 32 hollowed radially in the head 19 and which opens outwardly from the end face 19a of the head 19 to the through a groove 33 which also opens radially on the same side as the mortise 32.
L'extrémité 31 de la tige de manœuvre 15 comprend deux tenons 34 opposés et alignés transversalement à la partie d'extrémité coudée 15a de la tige 15 et qui présentent une forme conjuguée à celle de la mortaise 32, la partie d'extrémité 15a de la tige 15 située juste au dessus des tenons 34 de l'extrémité 31 s 'engageant dans la rainure 33 pour permettre l'introduction des tenons 34 dans la mortaise 32 de la tête 19 du verrou 13.  The end 31 of the operating rod 15 comprises two pins 34 opposite and aligned transversely to the bent end portion 15a of the rod 15 and which have a shape conjugate to that of the mortise 32, the end portion 15a of the rod 15 located just above the tenons 34 of the end 31 engaging in the groove 33 to allow the introduction of the pins 34 in the mortise 32 of the head 19 of the latch 13.
La largeur de la rainure 33 est inférieure à la largeur de la mortaise 32 pour permettre aux deux tenons 34 de l'extrémité 31 de la tige de manœuvre 15 d'être emprisonnés dans la mortaise 32 comme on le verra ultérieurement.  The width of the groove 33 is smaller than the width of the mortise 32 to allow the two pins 34 of the end 31 of the operating rod 15 to be trapped in the mortise 32 as will be seen later.
Pour permettre l'introduction de l'extrémité 31 en T de la tige de manœuvre 15 dans la mortaise 32 et la rainure 33 de la tête 19 du rotor de verrou 13, le logement 18 débouchant du voile supérieur plan 4 du tampon 3 comporte un évidement 35 situé en regard de la mortaise 32 et de la rainure 33 lorsque le rotor du verrou 13 occupe sa position à laquelle le pêne 14 verrouille le tampon 3 sur le cadre 2.  To allow the introduction of the end 31 at T of the operating rod 15 in the mortise 32 and the groove 33 of the head 19 of the lock rotor 13, the housing 18 opening out of the upper planar web 4 of the buffer 3 comprises a recess 35 situated opposite the mortise 32 and the groove 33 when the rotor of the latch 13 occupies its position at which the bolt 14 locks the buffer 3 on the frame 2.
Lorsque le tampon 3 est verrouillé au cadre 2, les deux doigts 17 du pêne 14 sont disposés suivant une direction sensiblement perpendiculaire aux deux côtés adjacents 2d du cadre 2 et 3d du tampon 3 comme représenté en figure 9 avec l'un des deux doigts 17 engagé dans la gâche 16 du cadre 2, tandis que les deux doigts du pêne 14 sont disposés suivant une direction sensiblement parallèle au côté 3d du tampon 3 lorsque ce dernier est déverrouillé du cadre 2 comme représenté en figure 8. Les figures 8 et 9 montrent que le doigt 17 du pêne 14 destiné à s'engager dans la gâche 16 se déplace par-dessus la partie correspondante de la paroi interne 11 définissant le côté 3d du tampon 3. Le tampon 3 comprend une rampe 36 formée en partie supérieure d'une paroi 37 faisant saillie sous le voile supérieur plan 4 du tampon 3 dans un plan perpendiculaire à ce voile et qui s'étend sensiblement parallèlement à la paroi interne 11 définissant le côté 3d du tampon 3. When the pad 3 is locked to the frame 2, the two fingers 17 of the bolt 14 are arranged in a direction substantially perpendicular to the two adjacent sides 2d of the frame 2 and 3d of the pad 3 as shown in FIG. 9 with one of the two fingers 17 engaged in the keeper 16 of the frame 2, while the two fingers of the bolt 14 are arranged in a direction substantially parallel to the side 3d of the buffer 3 when the latter is unlocked from the frame 2 as shown in Figure 8. Figures 8 and 9 show that the finger 17 of the bolt 14 intended to engage in the keeper 16 moves over the corresponding part of the inner wall 11 defining the side 3d of the buffer 3. The buffer 3 comprises a ramp 36 formed in the upper part of a wall 37 projecting under the upper planar web 4 of the buffer 3 in a plane perpendicular to this web and which extends substantially parallel to the inner wall 11 defining the 3d side buffer 3.
La rampe 36 et la paroi 37 viennent de fonderie avec le tampon 3 et la rampe 36 présente une pente ascendante en allant côté 3b vers le côté parallèle 3c du tampon 3. La pente ascendante de la rampe 36 se termine par une partie terminale 36a sensiblement parallèle au voile supérieur plan 4 du tampon 3.  The ramp 36 and the wall 37 are cast with the buffer 3 and the ramp 36 has an upward slope from side 3b to the parallel side 3c of the buffer 3. The upward slope of the ramp 36 terminates in a terminal portion 36a substantially parallel to the top plane veil 4 of the buffer 3.
La paroi 37 à rampe 36 est située à proximité de la partie formant fût 23 du tampon 3 et la rampe 36 présente une pente relativement au voile supérieur plan 4 du tampon 3 de façon que l'un 17 des deux doigts du pêne 14 puisse glisser le long de la rampe 36 lorsque le rotor du verrou 13 est manœuvré dans le sens de verrouillage ou de déverrouillage du tampon 3 au cadre 2.  The wall 37 with ramp 36 is located near the barrel portion 23 of the buffer 3 and the ramp 36 has a slope relative to the upper plane web 4 of the buffer 3 so that one 17 of the two fingers of the bolt 14 can slide along the ramp 36 when the rotor of the latch 13 is operated in the locking or unlocking direction of the buffer 3 to the frame 2.
La gâche 16 du cadre 2 est formée dans une oreille 38 faisant saillie extérieurement de la paroi latérale 8 du cadre 2 délimitant le côté 2d de ce cadre.  The keeper 16 of the frame 2 is formed in an ear 38 protruding from the side wall 8 of the frame 2 delimiting the side 2d of this frame.
L'oreille 38 du cadre 2 comprend ainsi une paroi externe 39 parallèle à la paroi correspondante 8 de ce cadre et qui est raccordée à la paroi latérale 8 par deux parois 40 perpendiculaires à la paroi latérale 8 dont une portion est absente entre les deux parois parallèles 40 de façon que l'oreille 38 débouche vers l'ouverture 5 du cadre 2.  The ear 38 of the frame 2 thus comprises an external wall 39 parallel to the corresponding wall 8 of this frame and which is connected to the side wall 8 by two walls 40 perpendicular to the side wall 8, a portion of which is absent between the two walls. parallel 40 so that the ear 38 opens out towards the opening 5 of the frame 2.
Ainsi, l'oreille 38 présente en section dans un plan perpendiculaire à la paroi latérale correspondante 8 du cadre 2 une forme en U dont les branches parallèles 40 sont raccordées l'une à l'autre par la paroi de base rectiligne 39.  Thus, the ear 38 has in section in a plane perpendicular to the corresponding side wall 8 of the frame 2 a U-shaped whose parallel branches 40 are connected to each other by the rectilinear base wall 39.
L'oreille 38 du cadre 2 comprend, formée dans celle-ci et à l'opposé des bords externes des parois 39, 40 de l'oreille 38, une rampe 41 dont la pente, en considérant le tampon 3 occupant sa position de fermeture de l'ouverture 5 du cadre 2, est inclinée en sens opposé à la rampe 36 du tampon 3, les deux rampes 36, 41 étant ainsi rectilignes et s 'étendant respectivement dans deux plans sensiblement perpendiculaires respectivement au voile plan 4 du tampon 3 et au plan du cadre 2. The ear 38 of the frame 2 comprises, formed therein and opposite the outer edges of the walls 39, 40 of the ear 38, a ramp 41 whose slope, considering the buffer 3 occupying its closed position. of the opening 5 of the frame 2, is inclined in opposite direction to the ramp 36 of the buffer 3, the two ramps 36, 41 thus being rectilinear and extending respectively in two planes substantially perpendicular respectively to the plane web 4 of the buffer 3 and to the plan of the frame 2.
La rampe 41 présente une largeur sensiblement égale à la largeur des parois 40 et fait saillie du fond de l'oreille 38 du cadre 2.  The ramp 41 has a width substantially equal to the width of the walls 40 and projects from the bottom of the ear 38 of the frame 2.
En outre, la rampe 41 présente une pente relative telle qu'en position de fermeture du tampon 3 au cadre 2, l'autre doigt 17 du pêne 14, opposé à celui pouvant glisser le long de la rampe 36 du tampon 3, peut également glisser le long de la rampe 41 dans un sens de verrouillage ou de déverrouillage du pêne 14 du verrou 13.  In addition, the ramp 41 has a relative slope such that in the closed position of the buffer 3 to the frame 2, the other finger 17 of the bolt 14, opposite that which can slide along the ramp 36 of the buffer 3, can also slide along the ramp 41 in a locking or unlocking direction of the bolt 14 of the latch 13.
La gâche 16 du cadre 2 est également formée dans l'oreille 38 et est constituée par un évidement 42 qui est situé en aval ou en arrière de la partie ascendante de la rampe 41 du cadre 2. L' évidement 42 est défini entre le bord d'extrémité supérieur de la rampe 41 et la paroi 40 située en regard de ce bord, l' évidement 42 étant en-dessous dudit bord en considérant la figure 8.  The keeper 16 of the frame 2 is also formed in the lug 38 and is constituted by a recess 42 which is located downstream or behind the upward portion of the ramp 41 of the frame 2. The recess 42 is defined between the edge upper end of the ramp 41 and the wall 40 located opposite this edge, the recess 42 being below said edge, considering FIG. 8.
Lorsque le pêne 14 occupe sa position de verrouillage du tampon 3 au cadre 2 comme représenté notamment en figure 9, l'un des doigts 17 du pêne 14 est en appui sur la partie supérieure ascendante de la rampe 36 du tampon 3 et l'autre doigt 17 est logé en appui au fond de l' évidement 42 constituant la gâche 16, les deux doigts 17 étant maintenus sur la rampe 36 et dans le fond de l' évidement 42 sous l'action de la force de rappel exercée par l'organe élastiquement déformable 27.  When the latch 14 occupies its locking position of the buffer 3 to the frame 2 as shown in particular in Figure 9, one of the fingers 17 of the bolt 14 is supported on the upper ascending part of the ramp 36 of the buffer 3 and the other finger 17 is housed in support at the bottom of the recess 42 constituting the striker 16, the two fingers 17 being held on the ramp 36 and in the bottom of the recess 42 under the action of the restoring force exerted by the elastically deformable member 27.
Un support élastique d'étanchéité 50 est interposé entre le cadre 2 et le tampon 3 lorsque ce dernier occupe sa position de fermeture du cadre 2, le support élastique d'étanchéité 50 pouvant être solidaire soit du tampon 3 soit du cadre 2. Ce support élastique assure une étanchéité aux eaux de ruissellement. Dans le cas présent, le support élastique d'étanchéité 50 est solidaire du cadre 2. An elastic sealing support 50 is interposed between the frame 2 and the pad 3 when the latter occupies its closed position of the frame 2, the elastic sealing support 50 being integral with either the pad 3 or the frame 2. This support elastic ensures watertightness to runoff. In the present case, the elastic sealing support 50 is integral with the frame 2.
A cet effet, le support élastique d'étanchéité, qui est réalisé en un matériau élastomère, présente en section transversale une forme générale en U renversé coiffant une partie de paroi périphérique supérieure 7a du cadre 2 qui est située en prolongement de la paroi périphérique 7 au-dessus de la collerette externe 6, la partie de paroi périphérique 7a délimitant également avec la paroi périphérique 7 l'ouverture 5 du cadre 2.  For this purpose, the elastic sealing support, which is made of an elastomeric material, has in cross section a generally inverted U-shaped capping an upper peripheral wall portion 7a of the frame 2 which is located in extension of the peripheral wall 7 above the outer flange 6, the peripheral wall portion 7a also delimiting with the peripheral wall 7 the opening 5 of the frame 2.
Le support élastique d'étanchéité 50 peut être retenu sur la paroi supérieure périphérique 7a par l'intermédiaire de stries 51 faisant saillie des faces internes des branches périphériques 52 du support 50 élastiquement en appui sur les faces latérales de la paroi supérieure 7a.  The elastic sealing support 50 can be retained on the upper peripheral wall 7a by means of grooves 51 projecting from the internal faces of the peripheral branches 52 of the support 50 resiliently bearing on the lateral faces of the upper wall 7a.
Le tampon 3 comporte une rainure périphérique 53 réalisée dans le voile supérieur plan 4 de ce tampon entre le bord périphérique externe de ce dernier et sa paroi périphérique interne 10. Ainsi, lorsque le tampon 3 occupe sa position de fermeture sur le cadre 2, la paroi périphérique 54 de liaison des deux branches latérales 52 du support 50 est engagée dans la rainure périphérique 53 du tampon 3.  The buffer 3 comprises a peripheral groove 53 made in the upper plane web 4 of this buffer between the outer peripheral edge of the latter and its inner peripheral wall 10. Thus, when the buffer 3 occupies its closed position on the frame 2, the peripheral wall 54 connecting the two lateral branches 52 of the support 50 is engaged in the peripheral groove 53 of the buffer 3.
Le fonctionnement du dispositif de verrouillage et de déverrouillage de l'invention ressort déjà en partie de la description qui précède et va être maintenant expliqué .  The operation of the locking and unlocking device of the invention is already apparent in part from the foregoing description and will now be explained.
On se placera dans la condition selon laquelle le tampon 3 occupe sa position de fermeture sur le cadre 2 pour obturer l'ouverture 5 de ce dernier et le pêne 14 du verrou 13 occupe sa position verrouillée représentée notamment en figure 9. A cette position, les deux doigts 17 du pêne 14 sont disposés sur une direction sensiblement perpendiculaire aux deux côtés adjacents 2d du cadre 2 et 3d du tampon 3 avec l'un des doigts engagé dans l'évidement 42 de la gâche 16 et l'autre doigt en appui en partie supérieure de la rampe 36, avec l'organe élastiquement déformable 27 rappelant et maintenant les doigts 17 du pêne 14 en appui dans l'évidement 42 et sur la rampe 36 à une position sensiblement parallèle au voile plan supérieur 4 du tampon 3. En outre, toujours à cette même position, le fond de l'évidement 42 est sensiblement au même niveau que le bord supérieur ascendant de la rampe 36 et sur lequel est en appui le doigt correspondant 17 du pêne 14 qui occupe alors sa position sensiblement parallèle du voile 4. It will be placed in the condition that the buffer 3 occupies its closed position on the frame 2 to close the opening 5 of the latter and the latch 14 of the latch 13 occupies its locked position shown in particular in Figure 9. In this position, the two fingers 17 of the bolt 14 are arranged in a direction substantially perpendicular to the two adjacent sides 2d of the frame 2 and 3d of the buffer 3 with one of the fingers engaged in the recess 42 of the striker 16 and the other finger in support in the upper part of the ramp 36, with the elastically deformable member 27 recalling and holding the fingers 17 of the bolt 14 resting in the recess 42 and on the ramp 36 at a position substantially parallel to the upper plane web 4 of the buffer 3 In addition, still at this same position, the bottom of the recess 42 is substantially at the same level as the upper rising edge of the ramp 36 and on which bears the corresponding finger 17 of the bolt 14 which then occupies its position substantially parallel of the veil 4.
Pour déverrouiller le pêne 14 du verrou 13, un opérateur introduit l'extrémité 31 de la clé 15 dans la cavité 35 du tampon 3 de manière que les deux tenons 34 de cette extrémité soit en regard de la mortaise 32 de la tête 19 du verrou 13.  To unlock the latch 14 of the latch 13, an operator introduces the end 31 of the key 15 into the cavity 35 of the pad 3 so that the two pins 34 of this end is opposite the mortise 32 of the head 19 of the latch 13.
Puis l'opérateur déplace en translation l'extrémité 31 au fond de la cavité 35 vers la tête 19 pour introduire les deux tenons 34 dans la mortaise 32 de l'empreinte 30 et la partie d'extrémité 15a du bras 15 au dessus des tenons 34 dans la rainure 33 de sorte que l'extrémité 31 de la clé 15 soit en prise dans l'empreinte 30 de la tête 19 du verrou 13.  Then the operator moves in translation the end 31 at the bottom of the cavity 35 towards the head 19 to introduce the two tenons 34 into the mortise 32 of the cavity 30 and the end portion 15a of the arm 15 above the tenons 34 in the groove 33 so that the end 31 of the key 15 is engaged in the cavity 30 of the head 19 of the lock 13.
Ensuite, l'opérateur manœuvre la clé 15 pour faire tourner d'environ un quart de tour la tête 19 du verrou 13 autour de son axe longitudinal pour provoquer le pivotement simultané également d'un quart de tour des doigts 17 du pêne 14 de la position de verrouillage de la figure 9 à la position déverrouillée de la figure 8 à laquelle les deux doigts 17 sont sensiblement parallèles au côté 3d du tampon 3. Il est à noter que lors du pivotement du pêne 14 à sa position déverrouillée du tampon 3, le doigt 17 qui était en appui au fond de l'évidement 42 vient en butée contre une paroi 60 faisant saillie verticalement de la face interne du voile plan supérieur 4 du tampon 3, laquelle paroi 60 vient de fonderie. Lors du pivotement du pêne 14 de sa position de verrouillage à sa position de déverrouillage, l'un des doigts 17 glisse le long de la rampe 36 dans le sens descendant tandis que l'autre doigt 17, une fois désengagé de l'évidement 42, atteint la partie supérieure de la rampe 41 pour glisser en descendant le long de celle-ci jusqu'à ce que les deux doigts se désengagent de leurs rampes respectives et occupent leur position déverrouillée de la figure 8. Bien entendu, l'organe élastiquement déformable 27 exerce sur la tête 19 du verrou 13 l'effort de rappel permettant de maintenir en appui les doigts 17 du pêne 14 sur les rampes 36 et 41 avant qu'ils quittent celles-ci, l'organe 27 étant alors détendu comme représenté en figure 4 à la position déverrouillée du pêne 14. Then, the operator maneuvers the key 15 to turn the head 19 of the latch 13 about a quarter turn around its longitudinal axis to cause the simultaneous pivoting also a quarter turn of the fingers 17 of the bolt 14 of the locking position of Figure 9 to the unlocked position of Figure 8 in which the two fingers 17 are substantially parallel to the side 3d of the buffer 3. It should be noted that during the pivoting of the latch 14 to its unlocked position of the buffer 3, the finger 17 which was supported at the bottom of the recess 42 abuts against a wall 60 projecting vertically from the inner face of the upper plane web 4 of the buffer 3, which wall 60 comes from casting. When the bolt 14 is pivoted from its locking position to its unlocked position, one of the fingers 17 slide along the ramp 36 in the downward direction while the other finger 17, once disengaged from the recess 42, reaches the upper part of the ramp 41 to slide down the length thereof until the two fingers disengage from their respective ramps and occupy their unlocked position of FIG. 8. Of course, the elastically deformable member 27 exerts on the head 19 of the latch 13 the return force making it possible to hold the fingers 17 of the bolt 14 on the ramps 36 and 41 before they leave them, the member 27 then being expanded as shown in Figure 4 to the unlocked position of the bolt 14.
En outre, à la position déverrouillée du pêne 14, l'extrémité 31 de la clé 15 est emprisonnée dans l'empreinte 30 de la tête 19 du verrou 13 du fait que les parties débouchantes de la mortaise 32 et de la rainure 33 sont en regard d'une partie de paroi correspondante du lamage 20 du tampon 3, interdisant le retrait de l'extrémité 31 de la clé 15 de la tête 19 du verrou 13.  In addition, in the unlocked position of the bolt 14, the end 31 of the key 15 is trapped in the cavity 30 of the head 19 of the latch 13 because the opening parts of the mortise 32 and the groove 33 are in view of a corresponding wall portion of the counterbore 20 of the buffer 3, preventing the withdrawal of the end 31 of the key 15 of the head 19 of the lock 13.
Une fois le tampon 3 déverrouillé du cadre 2, l'opérateur n'a plus qu'à exercer un effort de traction sur la clé 15 pour effectuer le pivotement du tampon 3 de sa position de fermeture à sa position d'ouverture représentée en figure 6 à laquelle il occupe une position dressée stable, par exemple d'environ 110°, par rapport au plan du cadre 2. En outre, à cette position déverrouillée du tampon 3, le pêne 14 retient le verrou 13 dans le logement 18 du voile 4 du tampon 3 en venant en butée sur la partie formant fût 23. A cette position, comme cela ressort de la figure 4, il subsiste un jeu entre le pêne 14 et la face d'extrémité libre du fût 23, mais l'organe élastiquement déformable 27 peut, à sa position détendue, exercer un effort axial sur le verrou 13 amenant le pêne 14 en appui sur la face d'extrémité libre du fût 23. Enfin, la face en bout 19a de la tête 19 du verrou 13 est située sensiblement dans le plan de la face externe du voile supérieur plan 4 du tampon 3 lorsque ce dernier est déverrouillé du cadre 2. Once the pad 3 has been unlocked from the frame 2, the operator only has to exert a traction force on the key 15 to pivot the pad 3 from its closed position to its open position shown in FIG. 6 to which it occupies a stable erect position, for example about 110 °, relative to the plane of the frame 2. In addition, in this unlocked position of the buffer 3, the bolt 14 holds the latch 13 in the housing 18 of the veil 4 of the buffer 3 abutting on the barrel portion 23. In this position, as is apparent from Figure 4, there remains a clearance between the bolt 14 and the free end face of the barrel 23, but the organ elastically deformable 27 may, in its relaxed position, exert an axial force on the latch 13 bringing the bolt 14 bearing on the free end face of the barrel 23. Finally, the end face 19a of the head 19 of the latch 13 is located substantially in the plane of the external face of the upper plane veil 4 of the buffer 3 when the latter is unlocked from the frame 2.
Pour verrouiller à nouveau le tampon 3 au cadre 2, l'opérateur, à l'aide de la clé 15, fait pivoter le tampon 3 autour des moyens d'articulation 9 vers le cadre 2 jusqu'à ce qu'il occupe sa position de fermeture de l'ouverture 5 de ce cadre et à laquelle le support élastique périphérique 50 du cadre 2 est engagé dans la rainure périphérique 53 du tampon 3.  To lock the buffer 3 again to the frame 2, the operator, using the key 15, rotates the buffer 3 around the hinge means 9 towards the frame 2 until it occupies its position closing the opening 5 of this frame and to which the peripheral elastic support 50 of the frame 2 is engaged in the peripheral groove 53 of the buffer 3.
L'opérateur manœuvre ensuite la clé 15 pour faire pivoter le verrou 13 et le pêne 14 de leur position déverrouillée représentée en figure 8 à leur position verrouillée représentée en figure 9. Lors de ce pivotement, l'un des doigts 17 du pêne 14 glisse le long de la rampe ascendante 36 du tampon 3 tandis que l'autre doigt 17 glisse le long de la rampe ascendante 41 de l'oreille 38 du cadre 2 à l' encontre de la force de rappel de l'organe élastiquement déformable 27. Il est à noter que pendant le pivotement des doigts 17 du pêne 14 le long des rampes 36, 41, ces doigts sont sensiblement parallèles au voile supérieur plan 4 du tampon 3. En outre, lors du déplacement des doigts 17 du pêne 14 sur les rampes 36 et 41, on exerce sur le tampon une contrainte de verrouillage contre le cadre 2 allant en augmentant au fur et à mesure du déplacement de ces doigts sur les rampes 36, 41 jusqu'à ce que les doigts occupent leur position de verrouillage du tampon 3 au cadre 2 à laquelle l'un des doigts 17 est emprisonné dans l'évidement 42 de la gâche 16 et l'autre doigt 17 est en appui en partie supérieure de la rampe 36, permettant d'exercer une contrainte déterminée sur le support élastique 50 et assurant par conséquent une étanchéité aux eaux de ruissellement entre le tampon 3 et le cadre 2. La contrainte exercée sur le tampon 3 contre la cadre 2 par les doigts 17 du pêne 14 en appui sur la rampe 36 et dans l'évidement 42 de la gâche 16 permet de compenser la déformation du support élastique 50 ainsi que son usure . The operator then moves the key 15 to pivot the latch 13 and the bolt 14 from their unlocked position shown in FIG. 8 to their locked position shown in FIG. 9. During this pivoting, one of the fingers 17 of the bolt 14 slides. along the ascending ramp 36 of the pad 3 while the other finger 17 slides along the ascending ramp 41 of the ear 38 of the frame 2 against the restoring force of the elastically deformable member 27. It should be noted that during the pivoting of the fingers 17 of the bolt 14 along the ramps 36, 41, these fingers are substantially parallel to the upper planar web 4 of the buffer 3. In addition, during the movement of the fingers 17 of the bolt 14 on the ramps 36 and 41, the lock is exerted on the buffer against the frame 2 increasing as the fingers move on the ramps 36, 41 until the fingers occupy their locking position of the buffer 3 to frame 2 one of the fingers 17 is trapped in the recess 42 of the striker 16 and the other finger 17 bears in the upper part of the ramp 36, to exert a determined stress on the elastic support 50 and ensuring therefore a watertightness seal between the buffer 3 and the frame 2. The stress exerted on the buffer 3 against the frame 2 by the fingers 17 of the bolt 14 resting on the ramp 36 and in the recess 42 of the waste 16 makes it possible to compensate the deformation of the elastic support 50 and its wear.
L'invention a été décrite ci-dessus en référence à un cadre et un tampon de forme générale carrée, mais elle peut s'appliquer à un ensemble à tampon et cadre circulaire ou à au moins un tampon triangulé faisant partie de plusieurs tampons triangulés de fermeture d'un cadre rectangulaire.  The invention has been described above with reference to a frame and a generally square shaped buffer, but it can be applied to a buffer assembly and circular frame or to at least one triangulated pad forming part of several triangulated pads of closing a rectangular frame.
Le cas échéant, le tampon 3 peut bénéficier d'une assistante à l'ouverture comprenant au moins un vérin d'assistance interposé entre le tampon 3 et le cadre 2.  If necessary, the buffer 3 can benefit from an assistant at the opening comprising at least one assistance cylinder interposed between the buffer 3 and the frame 2.
Le dispositif de verrouillage et de déverrouillage de l'invention est d'une structure extrêmement simple et peu coûteuse et permet de contrôler efficacement l'effort de contrainte exercé sur le tampon contre le cadre notamment lors de la présence d'un support élastique d'étanchéité interposé entre le tampon et le cadre et dont la déformation et l'usure peuvent être compensés.  The locking and unlocking device of the invention is of an extremely simple and inexpensive structure and makes it possible to effectively control the stress exerted on the pad against the frame, particularly when there is an elastic support of sealing interposed between the buffer and the frame and whose deformation and wear can be compensated.

Claims

R E V E N D I C A T I O N S
1. Dispositif de verrouillage et de déverrouillage à l'aide d'une clé (15) d'un tampon ou couvercle (3) sur un cadre (2) notamment d'un regard de chaussée, comprenant un verrou (13) solidaire du tampon (3) et portant à son extrémité en saillie sous le tampon (3) un pêne (14) pouvant pivoter, sous l'action de la clé (15), entre une position de verrouillage dans laquelle le pêne (14) du verrou (13) est engagé dans une gâche (16) du cadre (2) et une position de déverrouillage à laquelle le pêne (14) du verrou (13) est désengagé de la gâche (16), caractérisé en ce que le pêne (14) du verrou (13) comprend deux doigts radiaux (17), alignés suivant une direction sensiblement parallèle à un voile supérieur plan (4) du tampon (3) et aptes à coopérer, lorsque le tampon (3) occupe une position de fermeture du cadre (2), respectivement avec deux rampes parallèles (36,41) inclinées en sens opposés, et solidaires respectivement du tampon (3) et du cadre (2) sous ceux-ci, de manière à exercer sur le tampon (3) une contrainte de verrouillage au cadre (2) allant en augmentant au fur et à mesure que les doigts (17) du pêne (14) se déplacent sur les rampes (36,41) sous l'action de la clé (15) jusqu'à ce que les doigts (17) du pêne (14) occupent leur position de verrouillage du tampon (3) au cadre (2) à laquelle l'un des deux doigts (17) du pêne (14) est emprisonné dans la gâche (16) du cadre (2) . 1. Device for locking and unlocking with a key (15) of a buffer or cover (3) on a frame (2) including a manhole, comprising a latch (13) integral with the buffer (3) and carrying at its end projecting under the buffer (3) a bolt (14) pivotable under the action of the key (15) between a locking position in which the bolt (14) lock (13) is engaged in a latch (16) of the frame (2) and an unlocking position to which the bolt (14) of the latch (13) is disengaged from the striker (16), characterized in that the bolt (14) ) of the latch (13) comprises two radial fingers (17), aligned in a direction substantially parallel to a plane upper web (4) of the buffer (3) and able to cooperate, when the buffer (3) occupies a closed position of the frame (2), respectively with two parallel ramps (36,41) inclined in opposite directions, and secured respectively to the buffer (3) and the frame (2) therein , so as to exert on the buffer (3) a locking stress to the frame (2) increasing as the fingers (17) of the bolt (14) move on the ramps (36,41) under the action of the key (15) until the fingers (17) of the bolt (14) occupy their locking position of the buffer (3) to the frame (2) to which one of the two fingers (17) bolt (14) is trapped in the keeper (16) of the frame (2).
2. Dispositif selon la revendication 1, où le tampon (3) est constitué par une plaque rectangulaire ou triangulaire, caractérisé en ce que les deux doigts (17) du pêne (14) du verrou (13) sont disposés suivant une direction sensiblement perpendiculaire aux deux côtés adjacents correspondants (2d,3d) du cadre (2) et du tampon (3) lorsqu'ils occupent leur position de verrouillage du tampon (3) au cadre (2) et sont disposés suivant une direction sensiblement parallèle au côté correspondant (3d) du tampon (3) lorsqu'ils occupent leur position de déverrouillage et les deux rampes (36,41) du tampon (3) et du cadre (2) sont rectilignes et s'étendent dans deux plans sensiblement perpendiculaires respectivement au voile supérieur plan (4) du tampon (3) et au plan du cadre (2) . 2. Device according to claim 1, wherein the buffer (3) is constituted by a rectangular or triangular plate, characterized in that the two fingers (17) of the bolt (14) of the latch (13) are arranged in a substantially perpendicular direction at the two corresponding adjacent sides (2d, 3d) of the frame (2) and the pad (3) when they occupy their locking position of the pad (3) to the frame (2) and are arranged in a direction substantially parallel to the side corresponding (3d) buffer (3) when they occupy their unlocking position and the two ramps (36,41) of the buffer (3) and the frame (2) are rectilinear and extend in two planes substantially perpendicular respectively to the upper plane sail (4) of the buffer (3) and to the plane of the frame (2).
3. Dispositif selon la revendication 2, caractérisé en ce que la gâche (16) du cadre (2) est formée par un évidement (42) de réception du doigt correspondant (17) du pêne (14), lequel évidement (42) est réalisé dans une oreille (38) faisant saillie extérieurement de la paroi latérale (8) du cadre délimitant le côté (2d) du cadre (2) adjacent au côté (3d) du tampon (3) et est situé en aval de la partie ascendante de la rampe (41) du cadre (2) formée également dans l'oreille (38) de la paroi latérale (8) du cadre (2) .  3. Device according to claim 2, characterized in that the striker (16) of the frame (2) is formed by a recess (42) for receiving the corresponding finger (17) of the bolt (14), which recess (42) is made in an ear (38) protruding outwardly from the side wall (8) of the frame delimiting the side (2d) of the frame (2) adjacent to the side (3d) of the pad (3) and is located downstream of the upward portion the ramp (41) of the frame (2) also formed in the lug (38) of the side wall (8) of the frame (2).
4. Dispositif selon la revendication 3, caractérisé en ce que le fond de l' évidement (42) emprisonnant le doigt correspondant (17) du pêne (14) est sensiblement au même niveau que le bord supérieur de la rampe (36) du tampon (3) sur lequel est en appui l'autre doigt (17) du pêne (14) lorsque le tampon (3) occupe sa position de verrouillage au cadre (2) à laquelle le pêne (14) est sensiblement parallèle au voile supérieur plan (4) du tampon (3) .  4. Device according to claim 3, characterized in that the bottom of the recess (42) trapping the corresponding finger (17) of the bolt (14) is substantially at the same level as the upper edge of the ramp (36) of the buffer (3) on which is bearing the other finger (17) of the bolt (14) when the buffer (3) occupies its locking position to the frame (2) to which the bolt (14) is substantially parallel to the upper plane web (4) buffer (3).
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le verrou (13) comprend un rotor monté à pivotement dans un logement (18) du tampon (3) débouchant de part et d' autre de ce dernier et un organe élastiquement déformable (27) est interposé entre le rotor et le tampon (3) de manière à rappeler axialement le rotor et le pêne (14) dans un sens dirigé vers le voile supérieur plan (4) du tampon (3) .  5. Device according to one of claims 1 to 4, characterized in that the latch (13) comprises a rotor pivotally mounted in a housing (18) of the buffer (3) opening on either side of the latter and an elastically deformable member (27) is interposed between the rotor and the pad (3) so as to bias the rotor and the bolt (14) axially in a direction directed towards the upper planar web (4) of the pad (3).
6. Dispositif selon la revendication 5, caractérisé en ce que le rotor comprend une tête cylindrique (19) logée dans un lamage (20) du logement (18) débouchant du voile supérieur plan (4) du tampon (3) et un axe cylindrique (21), de plus petit diamètre que la tête cylindrique (19), traversant un perçage (22) du logement (18) réalisé dans un fût (23) du tampon (3) faisant saillie sous celui-ci et à l'extrémité libre duquel est fixé transversalement le pêne (14) . 6. Device according to claim 5, characterized in that the rotor comprises a cylindrical head (19) housed in a counterbore (20) of the housing (18) opening out of the plane upper web (4) of the buffer (3) and an axis cylindrical (21), of smaller diameter than the cylindrical head (19), through a bore (22) of the housing (18) formed in a barrel (23) of the buffer (3) projecting therefrom and to the free end of which is fixed transversely bolt (14).
7. Dispositif selon la revendication 6, caractérisé en ce que l'organe de rappel (27) est interposé entre la tête (19) du rotor et le fond du lamage (20) concentriquement à l'axe cylindrique (21).  7. Device according to claim 6, characterized in that the return member (27) is interposed between the head (19) of the rotor and the bottom of the counterbore (20) concentrically to the cylindrical axis (21).
8. Dispositif selon l'une des revendications 5 à 7, caractérisé en ce que l'organe de rappel est un ressort hélicoïdal (27) ou ondulé.  8. Device according to one of claims 5 to 7, characterized in that the return member is a helical spring (27) or corrugated.
9. Dispositif selon l'une des revendications 6 à 8, caractérisé en ce que la tête (19) du rotor comprend une empreinte (30) dans laquelle peut venir en prise une extrémité (31) de la clé (15) pour faire pivoter le rotor d'environ un quart de tour entre les deux positions de verrouillage et de déverrouillage du pêne (14) .  9. Device according to one of claims 6 to 8, characterized in that the head (19) of the rotor comprises a cavity (30) in which can engage an end (31) of the key (15) to rotate the rotor about a quarter of a turn between the two locking and unlocking positions of the bolt (14).
10. Dispositif selon la revendication 9, caractérisé en ce que la clé (15) comprend une tige dont l'extrémité 10. Device according to claim 9, characterized in that the key (15) comprises a rod whose end
(31) comporte deux tenons (34) opposés, alignés et aptes à s'engager dans l'empreinte de forme conjuguée (30) de la tête (19) du rotor. (31) comprises two lugs (34) opposite, aligned and adapted to engage in the conjugate form of footprint (30) of the head (19) of the rotor.
11. Dispositif selon la revendication 10, caractérisé en ce que l'extrémité (31) de la clé (15) est emprisonnée dans l'empreinte (30) de la tête (19) du rotor lorsque ce dernier occupe sa position de déverrouillage du pêne (14) .  11. Device according to claim 10, characterized in that the end (31) of the key (15) is trapped in the cavity (30) of the head (19) of the rotor when the latter occupies its unlocking position of the bolt (14).
12. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce qu'un support élastique d'étanchéité aux eaux de ruissellement (50) est interposé entre le cadre (2) et le tampon (3) lorsque ce dernier occupe sa position de verrouillage au cadre (2) et est solidaire du cadre (2) ou du tampon (3) .  12. Device according to one of claims 1 to 11, characterized in that a resilient support for sealing runoff (50) is interposed between the frame (2) and the buffer (3) when the latter occupies its locking position to the frame (2) and is integral with the frame (2) or the buffer (3).
13. Dispositif selon la revendication 12, caractérisé en ce que le support élastique d'étanchéité (50) présente en section transversale une forme générale en U et est solidaire du cadre (2) en coiffant une partie supérieure (8a) de la paroi périphérique (8) du cadre (2) délimitant son ouverture (5), le support élastique d'étanchéité (50) s' engageant dans une rainure périphérique (53) du tampon (3) en position de verrouillage du tampon (3) sur le cadre (2 ) . 13. Device according to claim 12, characterized in that the elastic sealing support (50) has a generally U-shaped cross section and is secured to the frame (2) by capping an upper part (8a) of the peripheral wall (8) of the frame (2) delimiting its opening (5), the elastic sealing support (50) being engaged in a peripheral groove ( 53) of the buffer (3) in the locking position of the buffer (3) on the frame (2).
14. Dispositif selon l'une des revendications 1 à 13, caractérisé en ce que le tampon (3) est monté articulé au cadre par des moyens d'articulation (9) et la gâche (16) du cadre (2) est située à l'opposé des moyens d'articulation (9).  14. Device according to one of claims 1 to 13, characterized in that the buffer (3) is mounted hinged to the frame by hinge means (9) and the latch (16) of the frame (2) is located the opposite of the articulation means (9).
EP15715331.3A 2014-03-10 2015-02-25 Device for locking and unlocking a cover in particular of a manhole with the aid of a key Active EP3117044B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1451953A FR3018293B1 (en) 2014-03-10 2014-03-10 LOCKING AND UNLOCKING DEVICE USING A KEY OF A BUFFER OR COVER ON A FRAME, IN PARTICULAR A PAVEMENT LOOK
PCT/FR2015/050453 WO2015136175A1 (en) 2014-03-10 2015-02-25 Device for locking and unlocking a cover in particular of a manhole with the aid of a key

Publications (2)

Publication Number Publication Date
EP3117044A1 true EP3117044A1 (en) 2017-01-18
EP3117044B1 EP3117044B1 (en) 2018-04-04

Family

ID=51014437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15715331.3A Active EP3117044B1 (en) 2014-03-10 2015-02-25 Device for locking and unlocking a cover in particular of a manhole with the aid of a key

Country Status (5)

Country Link
EP (1) EP3117044B1 (en)
ES (1) ES2673896T3 (en)
FR (1) FR3018293B1 (en)
TR (1) TR201809094T4 (en)
WO (1) WO2015136175A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3043885A1 (en) * 2016-11-14 2018-05-17 Hubbell Incorporated Latch locking cover for enclosures
CN106703082B (en) * 2017-01-03 2019-11-08 江苏工程职业技术学院 A kind of theft-proof manhole cover

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2873726B1 (en) * 2004-07-30 2006-11-24 Norinco Sa LOCKING AND UNLOCKING DEVICE WITH A BUFFER KEY OR COVER ON A FRAME
FR2898614B1 (en) * 2006-03-17 2010-01-01 Norinco LOCKING AND UNLOCKING DEVICE USING A KEY OF A BUFFER OR COVER ON A FRAME

Also Published As

Publication number Publication date
WO2015136175A1 (en) 2015-09-17
TR201809094T4 (en) 2018-07-23
EP3117044B1 (en) 2018-04-04
FR3018293A1 (en) 2015-09-11
ES2673896T3 (en) 2018-06-26
FR3018293B1 (en) 2016-02-19

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