EP0675230B1 - Grating latching device to a framing or the like - Google Patents

Abstract

The grille (1) comprises at least two lengthwise members (18) by means of a locking element (10) which is able to slide between bars of the grille and engage with a recess (13) in the lengthwise member. The locking element is made from an elastically deformable natural or synthetic material in the form of a shoe sliding between two adjacent bars of the grille and equipped with a hook to engage with the recess. Each lengthwise member of the grille frame has at least one lug (17) which is able to engage with a notch (18) in the grille for accurate positioning, and a seating surface to receive the grille. <IMAGE>

Description

The subject of the present invention is a device for locking a grid on a chassis or similar, for closing a gutter for example.

It has long been known to close openings various or the gutters which are provided on the fitted with grids embedded in a frame or frame integral with the roadway and which, in the case of a gutter, consists of two beams.

The grilles are generally removably mounted on the chassis and can be provided on the grid and / or the chassis a grid locking system on the frame. (see for example document EP-A-0 601 447 published after the priority date of the this request).

However, the grid-chassis assemblies offered up to present were difficult to handle in the factory and in the field. In addition, the assembly is sometimes delicate and on the ground you have to take action particular. In addition, locking systems generally planned were complex and expensive to manufacture.

Also, the present invention aims to remedy particularly to the above drawbacks by proposing a particularly simple locking system, little expensive, easy to handle and install and ensuring, in all circumstances a reliable connection over time from the grid to the chassis, this connection, by locking, can be done very quickly.

To this end, the invention relates to a device for locking a grid on a frame or the like comprising at least two side members on which can be removably mounted and locked a formed grid of a plurality of bars, characterized by at least one latch piece slidingly mounted between two adjacent bars of the grid and likely to enter a light forming a keeper formed in the spar.

The lock piece is formed by a shoe which has profile grooves corresponding to that of the bars of the grid and which extended by a hook-shaped part suitable for cooperate with the beam light.

The lock piece is made of an elastically natural or synthetic material deformable.

According to another characteristic of this device locking, each side member has at least one lug likely to cooperate with a notch in the grid to position and immobilize it on the side members in the horizontal plane.

Each aforementioned spar has a seat surface for the grid, which surface is provided with the lug aforementioned and is extended on one side by an upper rim and on the other side by a lower rim with the aforementioned light.

According to a preferred embodiment, each spar has two lugs on its seat surface respectively equidistant from the ends of the beam, while the aforementioned light provided in the ledge lower of the spar is offset from one or the other lug.

According to yet another characteristic of the invention, each spar is provided at its ends with means allowing its attachment to the other side members so as to guarantee the end-to-end assembly of said beams.

But other advantages and characteristics of the invention will appear better in the description detailed which follows and refers to the attached drawings, given only by way of example, and in which.

Figure 1 is a partial top view of a grille illustrated in locked position on a side member of the chassis that supports it.

Figure 2 is a view identical to Figure 1 but showing the grille in the unlocked position.

Figure 3 is a perspective and partial view of a spar.

Figures 4, 5 and 6 illustrate in section, along the line IV-VI of figure 3, the spar with the grid in position mounted on this beam, the part forming a lock not being shown in FIG. 4, this part being represented in FIG. 5 in the position ready for lock, and this part is also shown in Figure 6 in the locked position.

Figure 7 is a partial sectional view of the grid in position mounted on the chassis and illustrating the part forming a lock being installed on the wire rack.

Figure 8 is a sectional view along line VIII-VIII of Figure 2 and illustrating the part forming a lock in the mounted position on the grid.

We see in the figures, and in particular in the Figures 1 and 2, a grid 1 constituted, as known in itself, a plurality of parallel bars 2, 3, 4, 5, 6 connected by a plurality of transverse bars such than the bar 7. The grid 1 can be mounted on a chassis or frame which is embedded in a pavement by example (not shown) and which, in the case of the obturation of a gutter, takes the form of two parallel beams 8 made of cast iron, one of these beams being clearly visible in Figure 3.

According to the invention, and according to the example illustrated, a part 9 forming a lock is mounted at sliding between two adjacent bars, such as bars 3 and 4 (see figures 1, 2, 7 and 8), for allow grid 1 to be locked on at least one of the side members 8.

This part or lock 9, as can be seen on the Figures 5 and 6 essentially consists of a shoe 10 which is extended by a hook-shaped part 11.

Referring more particularly to FIGS. 7 and 8, we see that the shoe 10 of the lock 9 is provided with grooves side 12 having a profile corresponding substantially to that of bars 2, 3, 4, 5 and 6 of grid 1.

The hook-shaped part 11 of the latch 9 can enter a light 13 forming a keeper formed in the spar 8 and clearly visible in FIGS. 3, 7 and 8. The part or latch 9 is preferably made in one natural or synthetic material which is elastically deformable, but the installation and operation of this lock will be described in detail later.

As seen more clearly in Figure 3, each spar 8 is formed by a seat surface 14 for the grid 1, which surface is extended on one side by a upper edge 15, and on the other side by an edge lower 16 comprising the light or keeper 13 suitable for receive the hook part 11 of the latch 9.

The seating surface 14 of each spar is provided lugs 17 projecting from said surface and capable of cooperate with notches 18 formed in grid 1 and clearly visible in Figures 7 and 8 in particular. As we will explain it later about the operation, pins 17 and the notches 18 which receive them allow good stabilization in the horizontal plane of the grid 1 on the longitudinal members 8. It will be observed that, according to the exemplary embodiment illustrated, each spar 8 has on its seat surface 14 two pins 17 which are respectively equidistant from the ends of the spar. These ends include means any identified at 19 in Figure 3 and such as by example tenons and mortises, allowing the attachment and the connection of a plurality of beams 8 end to end.

In the lower edge 16 of each beam 8, it is possible provide several lights such as 13, the number of lights obviously being a function of the number of rooms 9 forming a lock that one wishes to use for lock the grid 1 on the frame, in the present case, by two parallel beams such as 8. The lights 13 which here are two in number, as we clearly seen in Figure 3, are offset by distance corresponding to the width of a bar 4 by relative to one or the other lug 17, as can be seen understand by referring to Figures 1 and 2.

But, for a better understanding of the invention, we will explain below how the assembly of the grid 1 and its locking on two beams parallels such as 8.

The cast iron beams 8 are first sealed in the roadway, it being understood that they have a sufficient height to allow good stability and a good seal, and it is also understood that they can be connected end to end by the means 19, so as to thus prepare a chassis suitable for receiving one or several successive grids such as 1 to close a gutter.

This being done, the grid 1 will be deposited on the stringers 8 and this grid will be blocked longitudinally and transversely in the plane horizontal thanks to the cooperation of the lugs 17 with the notches 18.

Then, as we can see in Figure 7, we insert by force the elastically deformable part 9 forming lock between two adjacent bars 3 and 4, this part forming a lock then being in the position shown in Figure 5 and ready to be operated by sliding between the aforementioned adjacent bars. We will observe that the part 9 will come, during its insertion, position itself automatically between bars 3 and 4, because the grooves 12 have a corresponding profile to the complementary profile 3a, 4a of said bars.

Then just push on the part 9, to the left of Figure 5, so that the part in hook shape 11 enters a lumen 13 of the spar 8, as can be seen in FIG. 6. Thus, grid 1 is blocked vertically and somewhat elastically on the side members 8.

To unlock the grid 1, it is of course sufficient to reverse the operations described above, that is to say to exert a reverse push on the latch 9 for extracting the hook-shaped part 11 light 13, after which we can extract the lock 9 of the space between the two adjacent bars 3 and 4, it being understood that, if desired, the lock 9 can be left held between these two bars, as seen in Figure 2.

It will be observed here that the free end of the part in hook 11 of latch 9 may have a protrusion 11a (Figure 4) allowing in a way a clipping elastic in the lumen 13 of the side members 8.

We therefore produced according to the invention a device economical, particularly easy to install, and constituting a module ready for installation and also capable of serve as a template in that the grid assembly rails can be directly installed on the gutter to be closed.

Claims (4)

1. Device for the locking of a grate onto a frame or the like comprising at least two beams (8) onto which a grate (1) may be mounted in a removable manner and locked with the assistance of at least one piece forming a lock (9) slidably mounted onto the said grate and adapted to penetrate into one beam (8), characterized in that the piece forming a lock (9) is made from an elastically deformable natural or synthetic material and consists of a shoe (10) slidably mounted between two adjacent bars (3,4) of the grate (1) and comprising side grooves (12) with a profile corresponding to that of the bars (2,3,4,5,6) of the said grate which shoe prolongs itself with a hook-shaped portion (11) adapted to co-operate with a slot (13) forming a catch formed in the beam (8).
2. Device according to claim 1, characterized in that each beam (8) comprises at least one stud (17) likely to co-operate with a notch (18) formed in the grate (1) for positioning and immobilizing the grate on the beams (8) in the horizontal plane.
3. Device according to claim 2, characterized in that each aforesaid beam (8) comprises a seating surface (14) for the grate (1), which surface is provided with the aforesaid stud (17) and is extended on one side by an upper edge flange (15) and on the other side by a lower edge flange (16) including the aforesaid slot (13).
4. Device according to claim 3, characterized in that each beam (8) comprises on its seating surface (14) two studs (17) equally spaced from the ends, respectively, of the beam, whereas the aforesaid slot (13) formed in the lower edge flange (16) of the beam (8) is offset with respect to either stud (17).

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