RU203293U1 - LID RETAINER TO CONTAINER - Google Patents

Abstract

The utility model relates to devices for fastening covers on open containers that are installed in the ground, in particular, water intake grids on drainage trays, covers on the frames of manholes of inspection wells or for other similar structures. The technical result of using this model is to simplify the device for fixing the covers on the body of the containers; ensuring reliable fixation of lids on containers in all planes; reducing the laboriousness of mounting and dismantling the latch itself, as well as simplifying the process of fixing the lids on the body of the containers. The latch 1 for fastening the lids on the containers is made of an elastic material, for example, of elastic plastic or an elastic composite material. It contains a supporting head part 2, in which grooves 3 with supporting surfaces are made on its opposite lateral sides. On one of the sides of the head part 2, perpendicular to the lateral sides with grooves 3, there is a console 7 oriented perpendicular to the support surfaces of the head part 2. On the free movable lower end of the console 7 there is a fastening protrusion 8. In the head part 2 of the latch 1 of the cover 6 from the opposite side from the console 7 with the fastening protrusion 8, an additional limiting and guiding protrusion 10 is made, oriented perpendicular to the supporting surfaces of the head part 2 of the latch 1 of the lid 6, located in the vertical holes 11 of the container 5. The additional limiting and guiding protrusion 10 may have a different cross-sectional profile, for example it can be made in the form of a cylinder with a conical lead-in surface 12 at its free end. On the console 7 of the latch 1 on the opposite side of the fastening protrusion 8, a protrusion 14 with a vertical hole 15 for a dismantling tool 16.5 zp can be made. f-ly; 10 ill.

Description

The utility model relates to devices for fastening covers on open containers that are installed in the ground, in particular, water intake grids on drainage trays, covers on the frames of manholes of inspection wells or for other similar structures.

The retainer is intended primarily for quick and reliable fastening of water inlet grilles to drainage trays, as well as for quick dismantling of the grille when servicing the drainage system without the use of tools. The latch can also be used in other reinforced concrete and concrete building structures for interconnecting gratings and similar covers with open hollow bodies.

Known are the elements of drainage channels, the trays of which are made, with horizontal support surfaces in the upper part of its lateral sides, on which the metal grate rests. Lattices are fixed on trays without bolts by means of spring-loaded sliders that can move towards the side walls of the tray: DE patent No. 4241705, E01C 1/22, E02D 29/14, E03F 5/06, 16.06.1994, DE patent No. 102008021669 , E02D 29/14, E03F 1/00, 05.11.2009, US patent No. 2016289913 (published also DE No. 102012110941, E01C 1/22, E02D 29/14, E03F 5/06, 05/15/2014). The fixing devices are difficult and time consuming to maintain due to their clogging during operation.

As the closest analogue (prototype) for the proposed latch, designed for attaching the lid to the container, the latch is selected, which is used to fasten the grill in the channel element according to EP patent No. 1287214, E02D 29/14, E03F 5/06, 26.07.2017.

The channel element contains a channel body, on the side walls of which there are supporting surfaces for a metal lattice, as well as niches made on the inner side in the upper part of the side walls, open to its inner part and with a supporting upper edge. The lattice is fixed on the channel body by means of a locking device made in the form of a slider channel spring-loaded in the transverse direction. The stop slider is made of monolithic metal and has an expanded head in the upper part and a retaining projection oriented towards the side wall of the tray in the lower part. The stopper element is placed in an opening made in the grid and a leaf spring is placed between the stopper element and the support surface of the lattice bridge. The stop slider forms a movable link between the fixed grid and the channel body. The slider is biased in the closed position by means of a spring towards the side wall of the channel, abuts against the clamping point on the grating and engages with the locking protrusion on the side wall of the channel. As a result, the cover is held on the side wall by clamping forces, while the locking slide is pressed, on the one hand, against the side wall of the channel, and on the other hand, abuts against the clamping point on the grid. However, this design has disadvantages. The locking slider fixes the grating on the channel only in the transverse and vertical directions relative to the longitudinal axis of the channel. In the longitudinal direction, the locking slider does not secure the grating on the channel. Another disadvantage of the locking device is due to the presence of a leaf spring and the need for the locking element to move in the transverse direction relative to the longitudinal axis of the channel. So, during the operation of this channel, the space between the locking element and the spring becomes clogged, which disrupts the functioning of the spring and the ability to quickly remove the grating from the channel during its maintenance.

The technical result from the use of this model is to ensure reliable fixation of the lids on the containers in all planes.

The technical result is achieved in that the latch for fastening the lids to the containers, containing the support head part with the fastening protrusion of the vertical direction of the lid in the lower part, is made of an elastic material. In the supporting head part, on its opposite lateral sides, there are grooves with supporting surfaces intended for fastening it to the cover. On one of the sides of the head part, perpendicular to the lateral sides with grooves, there is a cantilever oriented perpendicular to the support surfaces of the head part. On the free movable end of the console there is a fastening protrusion. In addition, on the opposite side from the console with a fastening protrusion on the head part, a limiting-guide protrusion is made, intended for installation in a container, oriented perpendicular to the support surfaces of the head part, while the fastening protrusion is oriented to the limiting-guide protrusion.

The retainer can be made of resilient plastic or composite material.

An additional protrusion with a vertical hole can be made on the console on the opposite side from the fastening protrusion.

It is advisable to make point or longitudinal bumps on the guide ledge.

The stop-guide protrusion of the retainer can be made with a lead-in surface at its free end. In particular, the stop-guide protrusion can be made in the form of a cylinder with a tapered surface at its free end.

The essence of the utility model is illustrated by examples of its implementation for fastening a cover, which is used as a water intake grate, on a container, which is used as a plastic drainage tray.

An example is illustrated by the following figures presented.

FIG. 1-a and 1-b - options for fixing lids on containers in perspective view; in FIG. 2 - longitudinal section of the retainer; in FIG. 3 - a fragment of a lid with a recess before installing a latch on it, FIG. 4 - a fragment of a cover with a retainer installed in it; FIG. 5: a), b), c), d) - a step-by-step process of fixing the lid on the container; in FIG. 6 shows an example of the use of four clamps for attaching a water intake grille to a drainage tray; in FIG. 7 and FIG. 8 - illustrates the position of the tool (screwdriver) relative to the additional protrusion when dismantling the intake grille: in perspective view from above and in perspective view from the side, respectively; in FIG. 9 is a cross-section of the drainage chute, illustrating the position of the tool (screwdriver) when dismantling the grating under its lateral edge; in FIG. 10 is the same as in FIG. 9, a perspective top view.

The latch 1 for fixing the lids on the containers is made of an elastic material, for example, of an elastic plastic or an elastic composite material. It contains a supporting head part 2, in which grooves 3 are made on its opposite lateral sides with support surfaces corresponding to the surfaces of the supporting guiding protrusions 4 made in the lid 6 attached to the container 5. On one of the sides of the head part 2 perpendicular to the lateral sides with grooves 3 console 7 oriented perpendicular to the support surfaces of the head part 2. On the free movable lower end of the console 7 there is a fastening protrusion 8, which is oriented to the side of the container 5 and which contacts the supporting upper edge 9 made in the container 5.

In the head part 2 of the latch 1 of the lid 6, on the opposite side from the console 7 with the fastening protrusion 8, an additional limiting-guide projection 10 is made, oriented perpendicular to the support surfaces of the head 2 of the latch 1 of the lid 6, located in the vertical holes 11 of the container 5.

The additional limiting-guide protrusion 10 can have a different cross-sectional profile, for example, it can be made in the form of a cylinder with a tapered lead-in surface 12 at its free end. On the cylindrical part of the additional limiting-guide protrusion 10, point or longitudinal bulges 13 can be made to ensure a tight fit of the additional limiting-guide protrusion 10 in the openings 11 of the container 5. In cross-section, the guide protrusion may have the shape of a polygon, star, cross, etc. ...

On the console 7 of the lock 1 on the opposite side from the fastening protrusion 8, a protrusion 14 with a vertical hole 15 for the dismantling tool 16 can be made.

The fixation of the water intake lattice 6 (cover) on the drainage tray 5 (container) is carried out as follows.

Preliminarily, the head part 2 of the retainer 1 with an interference fit is installed on the side of the grill 3 (on the cover), by sliding the supporting surfaces of the grooves 3, made on the opposite lateral sides of the head part 2, of the retainer 1 along the guide protrusions 4, made in the slot of the grill 6 (cover) (Fig. 3 and 4).

The lid (grid 6) must be fitted with at least one retainer 1. FIG. 6 shows a plastic drainage tray 5 (container) with a grid 6 (lid) installed on it by means of four clips 1.

After installing the head part 2 of the latch 1 on the lid 6, it is ready to be fixed on the container 5.

Next, the cover 6 with the latch 1 is placed over the container 5 so that the additional limiting-guide protrusion 10 of the latch 1 is located above the vertical hole 11. In this case, the lid 6 is centered with its place of installation on the container 5. Next, setting force F, for example, stepping on it with your foot. The process of fixing the lid 6 on the container 5 is shown in FIG. five:

a) the lid 6 with the latch 1 is located above the container 5, and the additional limiting and guiding protrusion 10 is above the opening 11;

b) an additional limiting-guide protrusion 10 with its conical lead-in surface, self-centering, enters the hole 11, and the fastening protrusion 8 abuts against the inner edge of the side wall of the container 5 and deviates from its vertical position from the side of the container 5;

c) the fastening protrusion 8 of the latch 1 slides along the inner surface of the side of the container, while the elastic arm 7 with the fastening protrusion 8 is bent inside the container 5.

d) the fastening protrusion 8 of the latch 1 enters a recess made in the side of the container 5, the elastic arm 7 returns to its original vertical position, and the upper surface of the fastening protrusion 8 abuts against the upper supporting edge 9 of the recess of the container 5.

The lid 6 is fixed on the container 2. In this case, the fastening protrusion 8 limits the relative movement of the lid 6 and the container 5 in the vertical direction, and the additional limiting-guide protrusion 10 - in the transverse and longitudinal directions. The lid 6 is securely fixed in all directions on the container 5.

From the above description, it can be seen that the additional limiting and guiding protrusion 10 of the latch 1 provides:

- centering of the latch 1 in the places of the container 5 landing by means of the holes 11;

- creates an additional pressure of the lid 6 to the container 5;

- fixes the cover 6 from shifting relative to the container 5 in the longitudinal and transverse directions.

Thus, from a structural point of view, the latch 1 comprises a fastening part and a position-guiding part. This distinction is conditional and is intended to ensure clarity of the essence of the claimed technical solution.

When an external load is applied to the lid 6, the latch 1 does not change the strength of its attachment to the container 5, but, on the contrary, provides a more reliable fastening of the lid 6 with the container 5.

Dismantling of the cover 6 is carried out by applying the force of its separation from the container 5 in any possible way.

In particular, dismantling can be carried out using a screwdriver 16, a pry bar or other specialized device, the dimensions of which allow it to penetrate through the slots in the cover 6 and be inserted into the hole 15 of the projection 14 of the console 7. Performing the operation of the lever, the tool 16 for dismantling bends the elastic arm 7, the latch 1, providing the movement of the fastening protrusion 8 for a certain fixed amount from the side of the container 5, removing it from contact with the supporting edge 9.

Dismantling of the cover 6 can also be carried out by acting with a force of a screwdriver 16, a pry bar or other specialized device under the side edge of the cover 6.

After the release of the fastening protrusion 8 of the latch 1 from contact with the supporting edge 9 of the container 5, the lid 6 is lifted upward, removing the guide protrusion 10 from the hole 11.

In the claimed technical solution, the possibility of repeated use of the retainer 1 is realized due to its dismantling without damaging the structure.

Thus, the presented design of the latch provides fast and reliable fixation in all planes of the lids on the containers.

Claims (6)

1. A latch for fastening lids to containers, containing a support head with a fastening protrusion of the vertical direction in the lower part, characterized in that it is made of an elastic material and grooves with support surfaces intended for fastening are made in its support head on opposite lateral sides it is on the cover, the fastening protrusion is located on the free movable end of the console, located on one side of the head part, perpendicular to the lateral sides with grooves and oriented perpendicular to the support surfaces of its head part, in addition, on the opposite side from the console with a fastening protrusion on the head part, it is made restrictively - a guide protrusion intended for its installation in a container, and which is oriented perpendicular to the support surfaces of the head part, while the fastening protrusion is oriented to the limiting guide protrusion. 2. The latch according to claim 1, characterized in that it is made of resilient plastic or composite material. 3. The latch according to claim 1, characterized in that a protrusion with a vertical hole is made on the console on the opposite side of the fastening protrusion. 4. The latch according to claim. 1, characterized in that point or longitudinal bulges are made on the limiting-guide protrusion. 5. The latch according to claim. 1, characterized in that the limiting-guide protrusion is made with a lead-in surface at its free end. 6. The latch according to claim. 1, characterized in that the limiting-guide protrusion is made in the form of a cylinder with a conical surface at its free end.

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